Subway safety door

Abstract

The utility model discloses a subway safety door which comprises an upper door frame, a sliding door and an anti-pinch mechanism. A lower door frame is placed on the lower side of the upper door frame, fixed doors are arranged between the front end of the upper door frame and the front end of the lower door frame, sliding grooves are formed in the opposite inner side faces of the upper door frame and the lower door frame, screw rods are rotationally connected between the left inner wall and the right inner wall of each sliding groove, and the thread directions of the left end and the right end of each screw rod are opposite; the two sliding doors are distributed left and right, sliding blocks are arranged on the upper surfaces and the lower surfaces of the sliding doors, and the sliding blocks are in threaded connection with the adjacent screw rods; the anti-pinch mechanisms are arranged on the opposite inner side faces of the two sliding doors correspondingly, and the subway safety door can accurately sense whether an obstacle exists in the closing path of the subway safety door or not, quickly cancel the acting force applied by the safety door to the obstacle, conveniently move away the obstacle, reduce the probability that the obstacle is damaged by pinch and improve the safety of the subway safety door.

Description

Technical Field

[0001] The utility model relates to the technical field of subway safety doors, in particular to a subway safety door. Background Art

[0002] The subway safety door is an electric, full-height door structure, which can prevent people and objects from entering the subway track and ensure the safety of subway operation. Its principle is to use a motor to drive the door switch to control the opening and closing of the door to achieve the control of people and objects entering the subway track. A safety door control system is usually set up in the subway station, which can control the opening and closing of the door through electronic signals to ensure that the opening and closing of the safety door does not conflict with the arrival of the train, and ensure the smooth operation of the safety door. In addition, the safety door can also quickly close the door body by starting the emergency release device in the case of power emergency stop to protect the safety of pedestrians; in the prior art, in the use of the subway safety door, in order to prevent the safety door from clamping the human body or object during the closing process, a sensing component is often set on the movable door panel of the subway safety door, which can sense whether there is an obstacle on the closing path of the subway safety door and stop the closing of the safety door in time. However, some subway safety doors use contact sensing to detect obstacles. When the obstacle is sensed, the safety door has applied a force to the object. Although the safety door stops closing in time, it is inconvenient for the movement of the obstacle at this time, which is easy to cause damage to the object. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a subway safety door that can accurately sense whether there is an obstacle in the closing path of the subway safety door, quickly cancel the force applied by the safety door to the obstacle, facilitate the removal of the obstacle, and reduce the probability of the obstacle being clamped and damaged, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a subway safety door, comprising an upper door frame, a sliding door and an anti-pinch mechanism;

[0005] Upper mast: The lower mast is placed on its lower side, and fixed doors are respectively provided between the front ends of the upper mast and the lower mast, and sliding grooves are provided on the opposite inner sides of the upper mast and the lower mast, and screw rods are rotatably connected between the left and right inner walls of the sliding grooves, and the threads of the left and right ends of the screw rods are in opposite directions;

[0006] Sliding doors: There are two sliding doors, which are distributed on the left and right. Sliding blocks are provided on the upper and lower surfaces of the sliding doors, and the sliding blocks are respectively connected to the adjacent screws by threads;

[0007] Anti-pinch mechanism: It is respectively arranged on the opposite inner sides of the two sliding doors, and can accurately sense whether there are obstacles in the closing path of the subway safety door, quickly cancel the force exerted by the safety door on the obstacle, facilitate the removal of the obstacle, reduce the probability of the obstacle being pinched, and improve the safety of the subway safety door.

[0008] Furthermore, it also includes a single chip microcomputer, which is located on the left side of the fixed door. The input end of the single chip microcomputer is electrically connected to an external power supply to control the opening and closing of the safety door.

[0009] Furthermore, the anti-pinch mechanism includes a sliding column, a sensing clamp, a connecting plate and a tension spring. The sliding columns are respectively connected to the sliding holes on the opposite inner sides of the two sliding doors in a transverse sliding manner. A sensing clamp is provided between the ends of the sliding columns corresponding to the vertical positions. The sensing clamp is located between the two sliding doors. A connecting plate is provided between the other ends of the sliding columns corresponding to the vertical positions. The outer arc surface of the sliding column is movably sleeved with a tension spring. The end of the tension spring away from the sensing clamp is respectively fixedly connected to the connecting plate to sense whether an obstacle exists.

[0010] Furthermore, the anti-pinch mechanism also includes a rubber pad, which is arranged on the opposite inner sides of the two induction clamping plates to make the closing effect of the safety door tighter.

[0011] Furthermore, the anti-pinch mechanism also includes a slide plate, an electric push rod and a distance measuring sensor. The electric push rods are respectively arranged inside the sliding door. A slide plate is provided between the telescopic ends of the two electric push rods in the same sliding door. The sliding columns pass through the sliding holes on the surface of the slide plate respectively. The ends of the tension springs close to the induction clamps are fixedly connected to the slide plates respectively. The distance measuring sensors are respectively arranged in the middle of the connecting plates. The input end of the electric push rod is electrically connected to the output end of the single-chip microcomputer, and the output end of the distance measuring sensor is electrically connected to the input end of the single-chip microcomputer, so as to quickly cancel the force applied to the obstacle.

[0012] Furthermore, motors are provided at the right ends of the upper and lower gantry frames, the left ends of the output shafts of the motors are fixedly connected to the screws respectively, and the input ends of the motors are electrically connected to the output ends of the single-chip microcomputer to provide power for the rotation of the screws.

[0013] Furthermore, observation glass is provided in the observation windows on the surfaces of the fixed door and the sliding door, so as to facilitate observation of the situation on the other side of the safety door.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] When in use, the safety door is installed inside the subway, and the motor is started by the single-chip microcomputer to drive the two sliding doors to open or close the safety door. In the process of closing the subway safety door, the two rubber pads are first contacted under the elastic force of the tension spring. When there is an obstacle blocking the two rubber pads, the reaction force exerted by the obstacle on the sensing clamping plate will overcome the elastic force of the tension spring, and push the distance between the connecting plate and the slide plate to increase. When the distance exceeds the set range, the electric push rod is started to immediately shorten the extended length of the tension spring and reduce the pressure exerted by the sensing clamping plate on the obstacle. It can accurately sense whether there is an obstacle in the closing path of the subway safety door, quickly cancel the force exerted by the safety door on the obstacle, facilitate the removal of the obstacle, reduce the probability of the obstacle being clamped and damaged, and improve the safety of the subway safety door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the explosion of the overall device of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the front view cross section of the overall device of the utility model;

[0019] Figure 4 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0020] In the figure: 1 upper door frame, 2 lower door frame, 3 fixed door, 4 slide slot, 5 screw rod, 6 slider, 7 sliding door, 8 anti-pinch mechanism, 81 slide column, 82 induction clamping plate, 83 rubber pad, 84 connecting plate, 85 tension spring, 86 slide plate, 87 electric push rod, 88 distance measuring sensor, 9 motor, 10 single chip microcomputer, 11 observation glass. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 ,This embodiment provides a technical solution: a subway safety door, including an upper door frame 1, a sliding door 7 and an anti-pinch mechanism 8;

[0023] Upper door frame 1: a lower door frame 2 is placed on its lower side to provide support for the setting of the subway safety door, so as to facilitate the fixing of the position of the subway safety door. A fixed door 3 is respectively arranged between the front end of the upper door frame 1 and the front end of the lower door frame 2 to prevent people from crossing the safety marking line. A slide groove 4 is arranged on the opposite inner sides of the upper door frame 1 and the lower door frame 2. A screw rod 5 is rotatably connected between the left and right inner walls of the slide groove 4. The threads of the left and right ends of the screw rod 5 are in opposite directions. A single chip microcomputer 10 is also included. The single chip microcomputer 10 is located on the left side of the fixed door 3. The input end of the single chip microcomputer 10 is electrically connected to an external power supply to control the opening and closing of the safety door.

[0024] Sliding door 7: There are two sliding doors 7 and they are distributed on the left and right sides. The upper and lower surfaces of the sliding doors 7 are provided with sliders 6, which are respectively threadedly connected with the adjacent screw rods 5. When the screw rod 5 rotates, because the threads at the left and right ends of the screw rod 5 are in opposite directions, the two sliding doors 7 are driven to separate relatively through the threaded connection between the screw rod 5 and the slider 6, and the safety door is opened. Similarly, when the two sliding doors 7 are close to each other, the safety door is closed. The right ends of the upper door frame 1 and the lower door frame 2 are provided with motors 9, and the left ends of the output shafts of the motors 9 are respectively fixedly connected with the screw rods 5. The input ends of the motors 9 are electrically connected to the output ends of the single-chip microcomputer 10 to provide power for the rotation of the screw rods 5. The observation windows on the surfaces of the fixed door 3 and the sliding door 7 are provided with observation glasses 11, which are convenient for observing the situation on the other side of the safety door;

[0025] Anti-pinch mechanism 8: respectively arranged on the opposite inner sides of the two sliding doors 7, the anti-pinch mechanism 8 includes a slide column 81, a sensing clamping plate 82, a connecting plate 84 and a tension spring 85, the slide column 81 is respectively connected to the slide hole of the opposite inner sides of the two sliding doors 7 in a transverse sliding manner, a sensing clamping plate 82 is arranged between the ends of the slide column 81 corresponding to the vertical position, the sensing clamping plate 82 is located between the two sliding doors 7, a connecting plate 84 is arranged between the other ends of the slide column 81 corresponding to the vertical position, and the outer arc surface of the slide column 81 is movably sleeved with a tension spring 85, and the end of the tension spring 85 away from the sensing clamping plate 82 is respectively connected to the slide hole of the opposite inner side of the two sliding doors 7. The connecting plate 84 is fixedly connected. The anti-pinch mechanism 8 also includes a rubber pad 83. The rubber pad 83 is arranged on the opposite inner side of the two sensing clamps 82. In the process of closing the subway safety door, under the elastic force of the tension spring 85, the sensing clamp 82 protrudes from the storage groove on the surface of the sliding door 7. The two rubber pads 83 first contact each other. The elastic force of the tension spring 85 is used to make the two rubber pads 83 closely contact each other, thereby improving the closing effect of the safety door. The anti-pinch mechanism 8 also includes a slide plate 86, an electric push rod 87 and a distance sensor 88. The electric push rod 87 is respectively arranged inside the sliding door 7. A slide plate 86 is provided between the telescopic ends of the two electric push rods 87 in the same sliding door 7. The slide column 81 passes through the slide hole on the surface of the slide plate 86. The end of the tension spring 85 close to the inductive clamping plate 82 is fixedly connected to the slide plate 86. The distance sensor 88 is respectively arranged in the middle of the connecting plate 84. The input end of the electric push rod 87 is electrically connected to the output end of the single-chip microcomputer 10. The output end of the distance sensor 88 is electrically connected to the input end of the single-chip microcomputer 10. When there is an obstacle between the two rubber pads 83, the reaction force exerted by the obstacle on the inductive clamping plate 82 will overcome the tension spring 8 5, pushes the slide post 81 and the sliding door 7 to slide relative to each other, and the distance between the connecting plate 84 and the slide plate 86 increases. The distance sensor 88 is used to detect the change of the distance between the connecting plate 84 and the slide plate 86. When the distance exceeds the set range, the electric push rod 87 is started, and the telescopic end of the electric push rod 87 drives the slide plate 86 to move, shortening the extended length of the tension spring 85, reducing the elastic force generated by the tension spring 85, and quickly reducing the pressure exerted by the induction clamping plate 82 on the obstacle, making it convenient to remove the obstacle, while reducing the probability of obstacle damage, and improving the safety of the subway safety door.

[0026] The working principle of a subway safety door provided by the utility model is as follows: when in use, the safety door is installed inside the subway, and the motor 9 is started by the single chip microcomputer 10. The output shaft of the motor 9 drives the screw rod 5 to rotate. Because the threads at the left and right ends of the screw rod 5 are in opposite directions, the two sliding doors 7 are driven to be relatively separated through the threaded connection between the screw rod 5 and the slider 6, so that the safety door is opened. Similarly, when the two sliding doors 7 are close to each other, the safety door is closed. In the process of closing the subway safety door, under the elastic force of the tension spring 85, the induction clamping plate 82 protrudes from the receiving groove on the surface of the sliding door 7, and the two rubber pads 83 are firstly contacted. The elastic force of the tension spring 85 is used to make the two rubber pads 83 closely contact, thereby improving the safety door. Closing effect: when there is an obstacle blocking the two rubber pads 83, the reaction force exerted by the obstacle on the sensing clamp 82 will overcome the elastic force of the tension spring 85, push the sliding column 81 and the sliding door 7 to slide relative to each other, and the distance between the connecting plate 84 and the slide plate 86 increases. The distance measuring sensor 88 is used to detect the change in the distance between the connecting plate 84 and the slide plate 86. When the distance exceeds the set range, the electric push rod 87 is started, and the telescopic end of the electric push rod 87 drives the slide plate 86 to move, shortening the extended length of the tension spring 85, reducing the elastic force generated by the tension spring 85, and quickly reducing the pressure exerted by the sensing clamp 82 on the obstacle, making it easier to remove the obstacle, while reducing the probability of obstacle damage and improving the safety of the subway safety door.

[0027] It is worth noting that the single chip microcomputer 10 disclosed in the above embodiment can use the PIC16F1823-I / P model single chip microcomputer, the electric push rod 87, the distance sensor 88 and the motor 9 can be freely configured according to the actual application scenario, the electric push rod 87 can use the LAM1 model electric push rod, the distance sensor 88 can use the T150HJG-CGQ model reflective laser distance sensor, the motor 9 can use the HC-KFS model servo motor, and the single chip microcomputer 10 controls the operation of the electric push rod 87, the distance sensor 88 and the motor 9 using methods commonly used in the prior art.

[0028] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A subway safety door, characterized in that: It comprises an upper door frame (1), a sliding door (7) and an anti-pinch mechanism (8); An upper door frame (1): a lower door frame (2) is placed at its lower side, a fixed door (3) is provided between the front end of the upper door frame (1) and the front end of the lower door frame (2), a slide groove (4) is provided on the opposite inner side surfaces of the upper door frame (1) and the lower door frame (2), a screw rod (5) is rotatably connected between the left and right inner walls of the slide groove (4), and the threads of the left and right ends of the screw rod (5) are in opposite directions; Sliding doors (7): There are two sliding doors (7) distributed on the left and right sides. The upper and lower surfaces of the sliding doors (7) are both provided with sliders (6), and the sliders (6) are respectively threadedly connected to the adjacent screw rods (5); Anti-pinch mechanisms (8) are respectively arranged on the opposite inner sides of the two sliding doors (7); The anti-pinch mechanism (8) comprises a slide post (81), a sensing clamping plate (82), a connecting plate (84) and a tension spring (85); the slide post (81) is respectively slidably connected in a horizontal direction in the slide holes on the inner side surfaces of the two sliding doors (7); a sensing clamping plate (82) is arranged between the ends of the slide posts (81) corresponding to the vertical positions; the sensing clamping plate (82) is located between the two sliding doors (7); a connecting plate (84) is arranged between the other ends of the slide posts (81) corresponding to the vertical positions; the outer arc surface of the slide post (81) is movably sleeved with a tension spring (85); and one end of the tension spring (85) away from the sensing clamping plate (82) is respectively fixedly connected to the connecting plate (84); The anti-pinch mechanism (8) further comprises a rubber pad (83), wherein the rubber pad (83) is arranged on the opposite inner side surfaces of the two sensing clamping plates (82); The anti-pinch mechanism (8) further comprises a slide plate (86), an electric push rod (87) and a distance measuring sensor (88), wherein the electric push rods (87) are respectively arranged inside the sliding door (7), a slide plate (86) is arranged between the telescopic ends of two electric push rods (87) in the same sliding door (7), the slide column (81) respectively passes through the slide hole on the surface of the slide plate (86), one end of the tension spring (85) close to the induction clamping plate (82) is respectively fixedly connected to the slide plate (86), the distance measuring sensor (88) is respectively arranged in the middle of the connecting plate (84), the input end of the electric push rod (87) is electrically connected to the output end of the single chip microcomputer (10), and the output end of the distance measuring sensor (88) is electrically connected to the input end of the single chip microcomputer (10).

2. A subway safety door according to claim 1, characterized in that: It also comprises a single chip microcomputer (10), wherein the single chip microcomputer (10) is located on the left side of the fixed door (3), and an input end of the single chip microcomputer (10) is electrically connected to an external power supply.

3. A subway safety door according to claim 2, characterized in that: The right ends of the upper door frame (1) and the lower door frame (2) are both provided with a motor (9), the left ends of the output shafts of the motors (9) are respectively fixedly connected to the screw rods (5), and the input ends of the motors (9) are electrically connected to the output ends of the single chip microcomputer (10).

4. A subway safety door according to claim 1, characterized in that: Observation glass (11) is provided in the observation windows on the surfaces of the fixed door (3) and the sliding door (7).

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