High-safety anti-pinch brake device for elevator door

Abstract

The utility model provides a high-safety elevator door anti-pinch brake device which comprises an elevator door plate, a buffer groove is formed in the side edge of the elevator door plate, the side face of the buffer groove is fixedly connected with a PLC assembly and a pressure sensor through grooves respectively, the two ends of the buffer groove are symmetrically connected with guide rods, and the two ends of each guide rod are slidably connected with a pressing plate and a buffer plate respectively. The surfaces of the guide rods are sleeved with springs, anti-clamping plates are symmetrically connected to the surfaces of the buffer plates, the sides, away from the buffer plates, of the anti-clamping plates are fixedly connected with buffer layers, the two ends of buffer grooves are symmetrically connected with electric rods through grooves, and telescopic rods of the electric rods are fixedly connected with fastening blocks through moving plates. Through cooperation of the pressure sensor, the pressing plate, the spring, the buffer plate, the anti-clamping plate, the electric rod and the fastening block, when the elevator door plate clamps a foreign matter in the closing process, braking can be conducted preferentially, and in the braking process, clamping damage of the elevator door plate to the foreign matter can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a high-safety anti-pinch braking device for elevator doors. Background Art

[0002] In the prior art, elevator doors are all fully automatically controlled. In order to avoid safety accidents such as accidental hand pinching, automatic sensing devices are installed at the upper and lower parts of the elevator door to detect whether there are foreign objects blocking the door during the closing process. However, the existing elevator door anti-hand pinching mechanism usually adopts an implementation method combining an automatic sensing device with a brake. However, the automatic sensing device is prone to faulty operation such as elevator door braking delay or repeated opening and closing due to its own failure or electrical interference. In addition, due to the lack of effective elastic buffer structure and corresponding auxiliary braking structure on the side of the elevator door, it is easy to cause serious hand pinching during the conventional braking process. Utility Model Content

[0003] In order to overcome the defects of the prior art, a high-safety elevator door anti-pinch brake device is now provided to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, a high-safety elevator door anti-pinch braking device is provided, comprising: an elevator door panel, the elevator door panel is slidably connected to a guide groove opened by the guide rail assembly through a guide rail assembly, a buffer groove is opened on the side of the elevator door panel, and the side of the buffer groove is fixedly connected to the PLC assembly and the pressure sensor through grooves, and the two ends of the buffer groove are symmetrically connected to the guide rod, and the two ends of the guide rod are slidably connected to the pressure plate and the buffer plate, the surface of the guide rod is sleeved with a spring, and at the same time, the surface of the buffer plate is symmetrically connected to the anti-pinch plate, and the side of the anti-pinch plate away from the buffer plate is fixedly connected to the buffer layer, and the two ends of the buffer groove are symmetrically connected to the electric rod through the groove, and the telescopic rod of the electric rod is fixedly connected to the fastening block through the movable plate, and the movable plate and the fastening block are slidably connected in the storage groove opened by the elevator door panel.

[0005] Preferably, the buffer groove opened on the side of the elevator door panel is a long strip structure, and the horizontal cross-section of the buffer groove is a convex structure, and the two sets of pressure sensors fixedly connected to the side of the buffer groove are located at the upper and lower ends of the PLC component.

[0006] Preferably, multiple groups of guide rods are fixedly connected in parallel and at equal intervals along the length direction on both sides of the buffer groove, and the multiple groups of guide rods are all cylindrical structures. At the same time, the cross-section formed by the combination of the buffer groove and the guide rods is a mesh-shaped structure.

[0007] Preferably, the pressure plate is in the shape of an elongated strip, the dimensions of the pressure plate and the interior of the buffer groove are adapted to each other, a guide hole is provided on the surface of the pressure plate relative to the guide rod, and a pressure block is connected to the surface of the pressure plate relative to the pressure sensor, and the pressure block is in the shape of a square structure.

[0008] Preferably, the buffer plate is in the shape of an elongated strip, the dimensions of the buffer plate and the interior of the buffer groove are adapted to each other, and a guide hole is provided on the surface of the buffer plate corresponding to the position of the guide rod, and the guide rod is located between the buffer plate and the pressure plate and is sleeved with a spring.

[0009] Preferably, multiple groups of anti-pinch plates are fixedly connected in parallel and at equal intervals on the side of the buffer plate surface away from the pressure plate. The multiple groups of anti-pinch plates are all rectangular structures, and the buffer layer fixedly connected to the side of the anti-pinch plate is a long strip structure, and the anti-pinch plates on the surfaces of the two groups of buffer plates are staggered.

[0010] Preferably, the two groups of storage grooves symmetrically opened on the upper and lower surfaces of the elevator door panel are both convex-shaped structures, and the fastening blocks slidingly connected at the openings of the storage grooves are square-shaped structures, while the movable plates slidingly connected inside the storage grooves are square-shaped structures. At the same time, the end of the fastening block away from the movable plate is a prism-shaped structure, and the position of the guide groove surface relative to the fastening block corresponds to the connection of the friction plate. The friction plate is an elongated strip structure, and multiple groups of protrusions are evenly fixedly connected to the surface of the friction plate, and the protrusions are hemispherical structures.

[0011] Compared with the prior art, the beneficial effects of the present invention are: through the cooperation of the pressure sensor, PLC component, pressure plate, spring, buffer plate and anti-pinch plate, when the elevator door panel contacts foreign objects during the closing process, the foreign objects will push the buffer plate through the anti-pinch plate, and the buffer plate will apply corresponding pressure to the pressure plate through the spring, and the pressure of the pressure plate will be synchronously transmitted to the pressure sensor, and the pressure sensor will transmit the pressure data to the PLC component. When the pressure data reaches the preset value, the PLC component will start the electric rod, and the electric rod will push the fastening block to abut the friction plate through the moving plate, thereby realizing priority braking of the elevator door panel and avoiding further clamping of the elevator door panel on foreign objects, which not only enhances the safety of the elevator door panel when closing, but also reduces the probability or degree of damage caused by clamped foreign objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view schematic diagram of an embodiment of the utility model.

[0013] Figure 2 It is a side view schematic diagram of an embodiment of the utility model.

[0014] Figure 3 It is a partial top view schematic diagram of an embodiment of the present utility model.

[0015] Figure 4 For the embodiment of the utility model Figure 2 A magnified schematic diagram of .

[0016] In the figure: 1. Elevator door panel; 2. PLC assembly; 3. Buffer groove; 4. Pressure sensor; 5. Guide groove; 6. Guide rail assembly; 7. Pressure plate; 8. Electric rod; 9. Fastening block; 10. Guide rod; 11. Buffer plate; 12. Anti-pinch plate; 13. Friction plate; 14. Moving plate; 15. Buffer layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Reference Figures 1 to 4 As shown, the utility model provides a high-safety elevator door anti-pinch braking device, comprising: an elevator door panel 1, the elevator door panel 1 is slidably connected to the guide groove 5 opened by the guide rail assembly 6 through the guide rail assembly 6, the elevator door panel 1 has a buffer groove 3 on the side, the side of the buffer groove 3 is fixedly connected to the PLC assembly 2 and the pressure sensor 4 through grooves, and the two ends of the buffer groove 3 are symmetrically connected to the guide rod 10, and the two ends of the guide rod 10 are slidably connected to the pressure plate 7 and the buffer plate 11, the surface of the guide rod 10 is sleeved with a spring, and the surface of the buffer plate 11 is symmetrically connected to the anti-pinch plate 12, and the side of the anti-pinch plate 12 away from the buffer plate 11 is fixedly connected to the buffer layer 15, and the two ends of the buffer groove 3 are symmetrically connected to the electric rod 8 through grooves, and the telescopic rod of the electric rod 8 is fixedly connected to the fastening block 9 through the movable plate 14, and the movable plate 14 and the fastening block 9 are slidably connected in the storage groove opened in the elevator door panel 1.

[0019] In this embodiment, the guide rail assembly 6 pushes the two sets of elevator door panels 1 to move relative to each other for closing. When a pedestrian's hand or foreign object is retained at the elevator door during the closing process, the anti-pinch plate 12 will first contact the surface of the foreign object through the buffer layer 15, and then the anti-pinch plate 12 and the buffer plate 11 will stop moving under the obstruction of the foreign object, while the elevator door panel 1 will continue to push the pressure plate 7 to move synchronously, so the spring between the pressure plate 7 and the buffer plate 11 will be gradually compressed. At the same time, with the cooperation of the compressed spring, the pressure plate 7 can synchronously transmit the pressure to the pressure sensor 4, and the pressure sensor 4 will transmit the pressure data to the electrically connected P In the LC component 2, when the pressure data received by the two sets of PLC components 2 in the two sets of elevator door panels 1 reach the preset value range, the PLC component 2 will synchronously start the two sets of electric rods 8 that are electrically connected to each other. The telescopic rods of the two electric rods 8 will push the fastening block 9 to move through the movable plate 14, so that the fastening block 9 can abut against the friction plate 13 set in the guide groove 5, thereby realizing emergency braking of the elevator door panel 1, stopping the elevator door panel 1 or reducing the speed of movement of the elevator door panel 1, so that the elevator control system can respond quickly, avoid excessive clamping of foreign objects by the elevator door panel 1, reduce the probability of damage by foreign objects or reduce the degree of damage by foreign objects.

[0020] As a preferred embodiment, the buffer groove 3 opened on the side of the elevator door panel 1 is a long strip structure, and the horizontal cross-section of the buffer groove 3 is a convex structure, and the two groups of pressure sensors 4 fixedly connected to the side of the buffer groove 3 are located at the upper and lower ends of the PLC component 2.

[0021] In this embodiment, if Figure 1 and Figure 3 A plurality of pressure sensors 4 are arranged in the buffer groove 3, which can effectively avoid the problem of failure of the anti-pinch brake device due to damage of a single pressure sensor 4, and enhance the stability of the anti-pinch brake device.

[0022] As a preferred embodiment, multiple groups of guide rods 10 are fixedly connected in parallel and equidistantly along the length direction on both sides of the buffer groove 3, and the multiple groups of guide rods 10 are all cylindrical structures. At the same time, the cross-section formed by the combination of the buffer groove 3 and the guide rods 10 is a mesh-shaped structure.

[0023] In this embodiment, if Figure 1 、 Figure 2 and Figure 3 The setting of the guide rod 10 can help enhance the stability of the pressure plate 7 and the buffer plate 11 during movement, and can also perform corresponding auxiliary compression on the spring sleeved on the surface of the guide rod 10, avoiding the problem of the spring bending and rebounding during the compression process, and ensuring the accuracy of the measurement of the pressure sensor 4.

[0024] As a preferred embodiment, the pressure plate 7 has a long strip structure, the dimensions of the pressure plate 7 and the inside of the buffer groove 3 are adapted to each other, and a guide hole is opened on the surface of the pressure plate 7 corresponding to the position of the guide rod 10, and the position of the surface of the pressure plate 7 relative to the pressure sensor 4 corresponds to the connection pressure block, and the pressure block has a square structure.

[0025] In this embodiment, if Figure 1 、 Figure 3 and Figure 4 The sizes of the pressure plate 7 and the buffer groove 3 are matched, which can help enhance the stability of the pressure plate 7 when it moves. Moreover, the setting of the pressure block can help enhance the effect of pressure transmission between the pressure plate 7 and the pressure sensor 4, and help improve the measurement accuracy of the pressure sensor 4.

[0026] As a preferred embodiment, the buffer plate 11 has a long strip structure, the size of the buffer plate 11 and the inside of the buffer groove 3 are adapted to each other, and a guide hole is opened on the surface of the buffer plate 11 corresponding to the position of the guide rod 10, and the guide rod 10 is located between the buffer plate 11 and the pressure plate 7 and is sleeved with a spring.

[0027] In this embodiment, if Figure 1 、 Figure 2 and Figure 3 The sizes of the buffer plate 11 and the buffer groove 3 are matched, which can help enhance the stability of the buffer plate 11 when it moves, and the spring arranged between the pressure plate 7 and the buffer plate 11 enables the elevator door to have a corresponding anti-pinch buffer structure during the closing process, which can not only reduce the instantaneous pressure when a foreign object is clamped, reduce the probability or degree of damage caused by the foreign object, but also help improve the response efficiency of the pressure sensor 4, ensuring that the elevator door panel 1 can be braked in time.

[0028] As a preferred embodiment, multiple groups of anti-pinch plates 12 are fixedly connected in parallel and at equal intervals on the side of the surface of the buffer plate 11 away from the pressure plate 7. The multiple groups of anti-pinch plates 12 are all rectangular structures, and the buffer layer 15 fixedly connected to the side of the anti-pinch plate 12 is a long strip structure, and the anti-pinch plates 12 on the surfaces of the two groups of buffer plates 11 are staggered.

[0029] In this embodiment, if Figure 1 and Figure 3The surfaces of the two groups of buffer plates 11 are staggered with anti-pinch plates 12, so that when the elevator door is closed normally, the two groups of buffer plates 11 will not apply additional pressure to the pressure sensor 4, thereby avoiding the fastening block 9 from frequently abutting the friction plate 13, and extending the service life of the fastening block 9. At the same time, the buffer layer 15 is made of soft rubber material, which can help reduce the probability of damage by foreign objects or the degree of damage to foreign objects. In addition, the two groups of PLC components 2 can transmit corresponding data to each other in real time through the built-in wireless transceiver module. Therefore, only when the pressure data received by the two groups of PLC components 2 reach the preset value range, the two groups of PLC components 2 will simultaneously start the corresponding electric rod 8, thereby effectively reducing the probability of the elevator door anti-pinch brake device being accidentally touched.

[0030] As a preferred embodiment, the two groups of storage grooves symmetrically opened on the upper and lower surfaces of the elevator door panel 1 are both convex-shaped structures, and the fastening block 9 slidingly connected at the opening of the storage groove is a square structure, and the movable plate 14 slidingly connected inside the storage groove is a square structure. At the same time, the end of the fastening block 9 away from the movable plate 14 is a prism-shaped structure, and the position of the surface of the guide groove 5 relative to the fastening block 9 corresponds to the connection of the friction plate 13. The friction plate 13 is a long strip structure, and a plurality of groups of protrusions are evenly fixedly connected on the surface of the friction plate 13, and the protrusions are hemispherical structures.

[0031] In this embodiment, if Figure 4 The fastening block 9 is made of rubber. When the fastening block 9 abuts against the friction plate 13, the protrusions arranged on the surface of the friction plate 13 can synchronously squeeze the end face of the fastening block 9, thereby enhancing the friction resistance between the fastening block 9 and the friction plate 13, thereby achieving rapid braking of the elevator door panel 1. At the same time, the structural setting of the end face of the fastening block 9 can assist in increasing the pressure of the fastening block 9 against the surface of the friction plate 13, thereby ensuring the braking effect of the elevator door panel 1.

[0032] The high-security elevator door anti-pinch braking device of the present invention cooperates with the pressure sensor 4, the pressure plate 7, the spring, the buffer plate 11, the anti-pinch plate 12, the electric rod 8 and the fastening block 9, so that when the elevator door panel 1 clamps a foreign object during the closing process, it can be braked first, and during the braking process, it can effectively reduce the damage caused by the elevator door panel 1 to the foreign object. At the same time, the guide rail assembly 6, the PLC assembly 2 and the pressure sensor 4 are all common brands and models on the market, and the PLC assembly 2 is also electrically connected to the elevator control system, thereby enhancing the safety of the elevator door when closing.

[0033] Although the 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 may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-safety elevator door anti-pinch brake device, comprising: An elevator door panel (1), the elevator door panel (1) is slidably connected to a guide groove (5) opened by the guide rail assembly (6) through a guide rail assembly (6), characterized in that: a buffer groove (3) is opened on the side of the elevator door panel (1), the side of the buffer groove (3) is fixedly connected to the PLC assembly (2) and the pressure sensor (4) through grooves, and the two ends of the buffer groove (3) are symmetrically connected to the guide rod (10), and the two ends of the guide rod (10) are slidably connected to the pressure plate (7) and the buffer plate (11), the surface of the guide rod (10) is sleeved with a spring, and the surface of the buffer plate (11) is symmetrically connected to the anti-pinch plate (12), and the side of the anti-pinch plate (12) away from the buffer plate (11) is fixedly connected to the buffer layer (15), and the two ends of the buffer groove (3) are symmetrically connected to the electric rod (8) through the grooves, and the telescopic rod of the electric rod (8) is fixedly connected to the fastening block (9) through the moving plate (14), and the moving plate (14) and the fastening block (9) are slidably connected in the storage groove opened by the elevator door panel (1).

2. A high-security elevator door anti-pinch brake device according to claim 1, characterized in that: The buffer groove (3) provided on the side of the elevator door panel (1) is in the form of an elongated strip, and the horizontal cross-section of the buffer groove (3) is in the form of a convex letter "U"; and two sets of pressure sensors (4) fixedly connected to the side of the buffer groove (3) are located at the upper and lower ends of the PLC component (2).

3. A high-security elevator door anti-pinch brake device according to claim 1, characterized in that: Multiple groups of guide rods (10) are fixedly connected at equal intervals in parallel along the length direction on both sides of the buffer groove (3), and the multiple groups of guide rods (10) are all cylindrical structures. At the same time, the cross-section formed by the combination of the buffer groove (3) and the guide rods (10) is a mesh-shaped structure.

4. A high-security elevator door anti-pinch brake device according to claim 1, characterized in that: The pressing plate (7) is in the form of an elongated strip. The dimensions of the pressing plate (7) and the interior of the buffer groove (3) are adapted to each other. A guide hole is provided on the surface of the pressing plate (7) corresponding to the position of the guide rod (10). A pressing block is connected to the surface of the pressing plate (7) corresponding to the position of the pressure sensor (4). The pressing block is in the form of a square structure.

5. A high-security elevator door anti-pinch brake device according to claim 1, characterized in that: The buffer plate (11) is in the form of an elongated strip. The dimensions of the buffer plate (11) and the interior of the buffer groove (3) are adapted to each other. A guide hole is provided on the surface of the buffer plate (11) corresponding to the position of the guide rod (10). The guide rod (10) is located between the buffer plate (11) and the pressure plate (7) and is sleeved with a spring.

6. A high-security elevator door anti-pinch brake device according to claim 1, characterized in that: A plurality of groups of anti-pinch plates (12) are fixedly connected in parallel and at equal intervals on the side of the surface of the buffer plate (11) away from the pressure plate (7), and the plurality of groups of anti-pinch plates (12) are all rectangular structures, and the buffer layer (15) fixedly connected to the side of the anti-pinch plate (12) is a long strip structure, and the anti-pinch plates (12) on the surfaces of the two groups of buffer plates (11) are staggered.

7. A high-security elevator door anti-pinch brake device according to claim 1, characterized in that: The two groups of receiving grooves symmetrically opened on the upper and lower surfaces of the elevator door panel (1) are both convex-shaped structures, and the fastening block (9) slidably connected at the opening of the receiving groove is square-shaped, and the movable plate (14) slidably connected inside the receiving groove is square-shaped. At the same time, the end of the fastening block (9) away from the movable plate (14) is prism-shaped, and the position of the surface of the guide groove (5) relative to the fastening block (9) corresponds to the connection of the friction plate (13), the friction plate (13) is in a long strip structure, and the surface of the friction plate (13) is evenly fixedly connected with multiple groups of convex blocks, and the convex blocks are in a hemispherical structure.

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