A reversible angle car door apron for a canted front elevator door

Abstract

The utility model discloses a kind of angle flip car door foot guard plates for oblique front elevator door, including car, support component, sill, foot guard plate body and state detection component, the support component one side is used to install sill and foot guard plate body, the other side is fixed in car bottom, bearing rotating component is installed in the both sides of the support component;The inside of the bearing rotating component is equipped with first fixing, and the foot guard plate body is rotatably connected with support component by bearing rotating component and first fixing;The device level layer foot guard plate body overturns to vertical state, so that the up-down clearance of landing and car is fixed and is not affected by elevator operation angle, strictly meet the requirement of safety standard to level layer clearance, avoid the risk of personnel or goods falling into clearance.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to a tiltable car door foot guard for a slanted front elevator door. Background Technology

[0002] Inclined elevators, as a type of elevator that runs at a certain angle to the horizontal plane, have seen increasingly widespread application in recent years due to the needs of mountainous buildings and sloping venues. Among them, "front-mounted elevator doors" refer to a door structure where the elevator's running angle and the door's forward / backward direction have a specific angular relationship when a person faces the landing door. This type of structure places special requirements on the adaptability of the car door foot guards. Addressing the technical problems of existing fixed-angle car door foot guards in inclined front-mounted elevator doors—namely, "excessive vertical clearance between the landing and the car in the leveling area, failing to meet safety standards" and "inability to simultaneously ensure interference-free operation and compliant leveling clearance"—new technical solutions are needed. Utility Model Content

[0003] The purpose of this utility model is to provide a reversible car door foot guard for inclined front elevator doors, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tiltable car door foot guard for a slanted front-mounted elevator door, comprising a car, a support component, a sill, a foot guard body, and a status detection component. One side of the support component is used to install the sill and the foot guard body, and the other side is fixed to the bottom of the car. Bearing rotating components are installed on both sides of the support component. A first fixing component is installed inside the bearing rotating component. The foot guard body is rotatably connected to the support component through the bearing rotating component and the first fixing component. An electric pull rod is installed in the middle of the foot guard body, and a second fixing component is installed at the other end of the electric pull rod. The second fixing component is connected to the bottom of the car, and an electric pull rod controller junction box is installed at the top of the second fixing component. The status detection component includes a first detection component for detecting the vertical state of the foot guard body and a second detection component for detecting the tilt angle state of the foot guard body. Both the first and second detection components are installed on the support component.

[0005] As a preferred embodiment of the tilting front elevator door foot guard of this utility model, the bearing rotating component includes bearing cylinder a and bearing cylinder b arranged opposite to each other. The inner walls of bearing cylinder a and bearing cylinder b are evenly spaced along their axis with rotating cavities. Ball bearings are installed inside the rotating cavities and are fitted to the first fixing member. Fixing plates are installed on the outer walls of bearing cylinder a and bearing cylinder b and are installed on both sides of the supporting component.

[0006] As a preferred embodiment of the tilting front elevator door foot guard of this utility model, connecting plates are installed on both sides of the bearing cylinder a and bearing cylinder b, and screw holes are opened on the side walls of the connecting plates. Bolts are screwed into the inside of the screw holes. Oil injection holes are opened on the outer walls of the bearing cylinder a and bearing cylinder b, and sealing plates are inserted into the inside of the oil injection holes.

[0007] As a preferred embodiment of the tilting front elevator door foot guard of this utility model, the side wall of the sealing plate is equipped with a hole plug, the outer wall of the hole plug is provided with a conical surface, and the outer wall of the sealing plate is provided with a sealing ring.

[0008] As a preferred embodiment of the inclined front elevator door foot guard of this utility model, a relay is installed at the upper end of the second fixing member. The relay is used to control the power supply of the electric pull rod to drive the foot guard body to switch between a vertical state and a flip-angle state.

[0009] As a preferred embodiment of the tilting front elevator door foot guard of this utility model, the connection position between the electric pull rod and the foot guard body is provided with a buffer pad, and the supporting component is a hollow steel structure with an anti-rust coating on its surface.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the design of the adjustable angle car door foot guard for the inclined front elevator door is reasonable.

[0011] When leveling, the foot guard plate flips to a vertical position, ensuring that the vertical gap between the landing and the car is fixed and unaffected by the elevator's running angle. This strictly meets the safety standards for leveling gaps and avoids the risk of people or objects falling into the gap. During operation, the foot guard plate automatically flips to an angle parallel to the landing door, completely resolving interference with the landing door components and eliminating the risk of obstruction during operation.

[0012] Greater applicability: It can adapt to inclined elevators with different operating angles. By adjusting the extension and retraction stroke of the electric pull rod, the flip angle of the foot guard can be flexibly adapted, eliminating the need to design fixed angle foot guards for different elevator angles, thus reducing design and manufacturing costs. Attached Figure Description

[0013] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 This is a side view of the present invention;

[0015] Figure 3 This is a sectional view of one side of the present invention;

[0016] Figure 4 This is a cross-sectional view of the present invention from another side;

[0017] Figure 5 This is a schematic diagram of the rotating bearing component of this utility model;

[0018] Figure 6 This is a schematic diagram of the sealing plate of this utility model.

[0019] In the diagram: 1. Sill; 2. Support component; 3. Foot guard body; 4. Bearing rotating component; 41. Bearing cylinder a; 42. Bearing cylinder b; 5. First fixing component; 6. Electric pull rod; 7. Second fixing component; 8. First detection component; 9. Second detection component; 10. Electric pull rod controller junction box; 11. Relay; 12. Fixing plate; 14. Rotating cavity; 15. Ball bearing; 16. Connecting plate; 17. Screw hole; 18. Bolt; 19. Oil injection hole; 20. Sealing plate; 21. Hole plug; 22. Conical surface; 23. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-6 This utility model provides a technical solution:

[0022] In this technical solution, a tiltable car door foot guard for a slanted front elevator door includes a car, a support component 2, a sill 1, a foot guard body 3, and a status detection component. One side of the support component 2 is used to install the sill 1 and the foot guard body 3, and the other side is fixed to the bottom of the car. Bearing rotating components 4 are installed on both sides of the support component 2. A first fixing component 5 is installed inside the bearing rotating component 4. The foot guard body 3 is rotatably connected to the support component 2 through the bearing rotating component 4 and the first fixing component 5. An electric pull rod 6 is installed in the middle of the foot guard body 3. A second fixing component 7 is installed at the other end of the electric pull rod 6. The second fixing component 7 is connected to the bottom of the car. An electric pull rod controller junction box 10 is installed at the top of the second fixing component 7. The status detection component includes a first detection component 8 for detecting the vertical state of the foot guard body 3 and a second detection component 9 for detecting the tilt angle state of the foot guard body 3. Both the first detection component 8 and the second detection component 9 are installed on the support component 2.

[0023] In the specific implementation process, the car serves as the installation benchmark for the overall structure of the foot guard plate. The fixed connection (preferably welded or high-strength bolted) between the bottom of the car and the support component 2 must meet the vibration load requirements during elevator operation, ensuring that the support component 2 remains free from displacement or loosening. Symmetrical bearing rotating components 4 are installed on both sides of the support component 2 to ensure the coaxiality of the foot guard plate body 3 during rotation, preventing rotation jamming or component deformation due to unilateral force. The installation of the sill 1 and the support component 2 must be kept horizontal (along the width of the car) to ensure the guiding accuracy of the car door during operation and to maintain the alignment with the foot guard plate body 3. The system forms a collaborative protection structure of "door-threshold-guard plate" to seal off potential gap hazards on the car side. The first fixing member 5 preferably has a stepped shaft structure, with one end fixed to the end (pre-set mounting hole) of the guard plate body 3 (such as a key connection or tight fit), and the other end inserted into the bearing rotating component 4, forming a rotational transmission chain of "guard plate body 3 - first fixing member 5 - bearing rotating component 4", ensuring that the guard plate body 3 can flexibly rotate around the axis of the bearing rotating component 4; the electric pull rod 6 is installed in the middle of the guard plate body 3, which can make the force even when the guard plate rotates, avoiding the risk of force shift due to force point displacement. The tilting angle deviation; the second fixing component 7 adopts an L-shaped bracket structure, one end of which is fixed to the bottom of the car (pre-set mounting seat), and the other end simultaneously supports the electric pull rod 6 and the electric pull rod controller junction box 10, realizing "one frame for multiple uses" and saving installation space at the bottom of the car; the electric pull rod controller junction box 10 must have waterproof and dustproof performance (protection level not lower than IP54), and integrates circuit terminals and overload protection components inside to avoid electric pull rod 6 failure due to short circuit or humid environment, and the installation position of the first detection component 8 and the second detection component 9 on the support component 2 must be based on The foot guard body 3 is precisely positioned according to its flipping stroke. The first detection element 8 must correspond to the side or end face of the foot guard body 3 when it is vertical (preset detection boss), and the second detection element 9 must correspond to the same detection boss when the foot guard body 3 is flipped to be parallel to the landing door. This ensures that the detection elements can be accurately triggered when the foot guard body 3 switches to the target state. The detection elements are electrically connected to the junction box 10 of the electric pull rod controller. The trigger signal can be fed back to the elevator control system in real time, forming a closed loop of "detection-feedback-control" to avoid the foot guard body 3 from exceeding the state tolerance due to excessive extension and retraction of the electric pull rod 6.

[0024] In some technical solutions, the bearing rotating component 4 includes bearing cylinders a41 and b42 arranged opposite to each other. The inner walls of bearing cylinders a41 and b42 are evenly spaced along their axis with rotating cavities 14. Ball bearings 15 are installed inside the rotating cavities 14 and are fitted to the first fixing member 5. Fixing plates 12 are installed on the outer walls of bearing cylinders a41 and b42 and are installed on both sides of the support component 2.

[0025] In the specific implementation process, bearing cylinder a41 and bearing cylinder b42 are arranged opposite to each other (the spacing is adapted to the length of the first fixing member 5) to form bidirectional support for the first fixing member 5, so as to avoid radial movement of the first fixing member 5 during the flipping process; the rotating cavity 14 is evenly and equidistantly opened (preferably 6-8), which can make the balls 15 evenly distributed, ensuring the force balance when the first fixing member 5 rotates and reducing local wear; the balls 15 are preferably made of high carbon chromium bearing steel (such as GCr15), and their contact surface with the first fixing member 5 needs to be polished (surface roughness Ra≤0.8μm) to reduce the coefficient of rotational friction; the fixing plate 12 is welded to the outer wall of the bearing cylinder and bolted to the support component 2 (the number of bolts is not less than 2), which facilitates the disassembly and maintenance of the bearing rotating component 4. If the balls 15 wear out later, the bearing cylinder can be disassembled and replaced separately without replacing the entire support component 2.

[0026] In some technical solutions, connecting plates 16 are installed on both sides of bearing cylinder a41 and bearing cylinder b42. The side walls of the connecting plates 16 are provided with screw holes 17, and bolts 18 are screwed into the screw holes 17. The outer walls of bearing cylinder a41 and bearing cylinder b42 are provided with oil injection holes 19, and sealing plates 20 are inserted into the oil injection holes 19.

[0027] In the specific implementation process, the connecting plate 16 is vertically welded to both ends of the bearing cylinder. The diameter of its screw hole 17 is adapted to the bolt 18 (preferably M8-M12 bolt). The bearing cylinder a41 and bearing cylinder b42 are connected and fixed by the bolt 18 to form an integral bearing rotating component 4, which avoids relative displacement between the two during operation. The diameter of the oil injection hole 19 is preferably φ6-φ8mm, and its position should correspond to the middle of the rotating cavity 14, so that lubricating oil (preferably lithium-based grease) can enter the rotating cavity 14 through the oil injection hole 19 to lubricate the ball 15 and the inner wall of the rotating cavity 14, and extend the service life of the rotating component. The sealing plate 20 is made of elastic rubber, and its outer diameter is slightly larger than the inner diameter of the oil injection hole 19 to achieve an interference fit. It can effectively block dust and water vapor in the elevator shaft from entering the rotating cavity 14 and prevent the ball 15 from rusting or getting stuck.

[0028] In some technical solutions, a hole plug 21 is installed on the side wall of the sealing plate 20, the outer wall of the hole plug 21 is provided with a conical surface 22, and the outer wall of the sealing plate 20 is provided with a sealing ring 23.

[0029] In the specific implementation process, the plug 21 and the sealing plate 20 adopt an integral molding structure (both are made of nitrile rubber). The taper of the conical surface 22 is preferably 1:5-1:10. When inserted into the oil injection hole 19, it can be quickly positioned by the guide of the conical surface. At the same time, the conical surface structure can enhance the tightness of the fit with the inner wall of the oil injection hole 19 and improve the sealing effect. The sealing ring 23 is an O-ring structure (the same material as the sealing plate 20) and is embedded in the annular groove on the outer wall of the sealing plate 20. When the sealing plate 20 is inserted into the oil injection hole 19, the sealing ring 23 is compressed, further filling the gap between the sealing plate and the inner wall of the oil injection hole. The double seal can effectively prevent lubricating oil from leaking from the oil injection hole 19 and prevent external impurities from entering.

[0030] In some technical solutions, a relay 11 is installed at the upper end of the second fixing member 7. The relay 11 is used to control the power supply of the electric pull rod 6 to drive the foot guard body 3 to switch between a vertical state and a flip angle state.

[0031] In the specific implementation process, relay 11 is preferably a DC electromagnetic relay (adapted to the voltage level of the elevator control system, such as DC24V). Its coil end is connected to the control circuit in the junction box 10 of the electric pull rod controller, and its contact end is connected to the power line of the electric pull rod 6. When the elevator control system sends a "leveling signal", the coil of relay 11 is energized, the contact closes, and the electric pull rod 6 is energized and extended, pushing the foot guard body 3 to flip to a vertical state. When a "running signal" is sent, the coil of relay 11 is de-energized, the contact switches, and the electric pull rod 6 is energized and shortened, pulling the foot guard body 3 to flip to an angled state. The installation of relay 11 and the second fixing part 7 must be kept insulated (e.g., by adding insulating gaskets) to avoid the risk of short circuit caused by the conduction of current by the metal bracket.

[0032] In some technical solutions, a buffer pad is provided at the connection position between the electric pull rod 6 and the foot guard body 3, and the support component 2 is a hollow steel structure with an anti-rust coating on its surface.

[0033] In the specific implementation process, the buffer pad is preferably made of nitrile rubber (2-3mm thick), which is clamped between the connecting end of the electric pull rod 6 and the mounting surface of the foot guard body 3. It can absorb the impact force when the electric pull rod 6 extends and retracts, reduce the noise generated by rigid collision (the noise is reduced to below 50dB), and at the same time prevent the mounting surface of the foot guard body 3 from being dented or worn due to collision. The hollow structure of the support component 2 (the hollow rate is preferably 30%-40%) should avoid key stress points (such as the connecting end fixed to the car, the mounting position of the bearing rotating component 4), so as to reduce the structural weight (reduce the car load by about 5%-8%) while ensuring that the support strength meets the static and dynamic load requirements of the elevator during operation. The anti-rust coating is preferably a hot-dip galvanized layer (thickness ≥80μm) or an epoxy resin coating (thickness ≥60μm). The hot-dip galvanized layer can provide long-term anti-rust capability (anti-rust life ≥5 years), while the epoxy resin coating is suitable for the elevator shaft environment with moisture or strong corrosion, so as to prevent the structural strength of the support component 2 from decreasing due to corrosion.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A reversible angle car door foot guard for a slanted front-mounted elevator door, comprising a car, a support component (2), a sill (1), a foot guard body (3), and a status detection component, characterized in that, The support component (2) is used to install the sill (1) and the foot guard body (3) on one side, and is fixed to the bottom of the car on the other side. Both sides of the support component (2) are equipped with bearing rotating components (4). The bearing rotating component (4) has a first fixing component (5) installed inside. The foot guard body (3) is rotatably connected to the support component (2) through the bearing rotating component (4) and the first fixing component (5). An electric pull rod (6) is installed in the middle of the foot guard body (3). A second fixing component (7) is installed at the other end of the electric pull rod (6). The second fixing component (7) is connected to the bottom of the car. An electric pull rod controller junction box (10) is installed at the top of the second fixing component (7). The status detection component includes a first detection component (8) for detecting the vertical state of the foot guard body (3) and a second detection component (9) for detecting the flip angle state of the foot guard body (3). The first detection component (8) and the second detection component (9) are both installed on the support component (2).

2. The tiltable car door foot guard for a slanted front-mounted elevator door according to claim 1, characterized in that, The bearing rotating component (4) includes a bearing cylinder a (41) and a bearing cylinder b (42) arranged opposite to each other. The inner walls of the bearing cylinder a (41) and the bearing cylinder b (42) are provided with rotating cavities (14) evenly spaced along their axis. The rotating cavities (14) are equipped with balls (15). The balls (15) are fitted with the first fixing member (5). The outer walls of the bearing cylinder a (41) and the bearing cylinder b (42) are equipped with fixing plates (12). The fixing plates (12) are installed on both sides of the support component (2).

3. A tiltable car door foot guard for a slanted front-mounted elevator door according to claim 2, characterized in that, Both sides of the bearing cylinder a (41) and bearing cylinder b (42) are equipped with connecting plates (16). The side walls of the connecting plates (16) are provided with screw holes (17). Bolts (18) are screwed into the screw holes (17). The outer walls of the bearing cylinder a (41) and bearing cylinder b (42) are provided with oil injection holes (19). A sealing plate (20) is inserted into the oil injection hole (19).

4. A tiltable car door foot guard for a slanted front-mounted elevator door according to claim 3, characterized in that, The sealing plate (20) has a hole plug (21) installed on its side wall. The outer wall of the hole plug (21) is provided with a conical surface (22). The outer wall of the sealing plate (20) is provided with a sealing ring (23).

5. A tiltable car door foot guard for a slanted front-mounted elevator door according to claim 1, characterized in that, A relay (11) is installed at the upper end of the second fixing member (7). The relay (11) is used to control the electric pull rod (6) to switch between vertical and flip angle states.

6. A tiltable car door foot guard for a slanted front-mounted elevator door according to claim 1, characterized in that, The connection between the electric pull rod (6) and the foot guard body (3) is provided with a buffer pad, and the support component (2) is a hollow steel structure with a rust-proof coating on its surface.

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