Actuating mechanism of platform door transverse pressing type unlocking anti-pinch device

Abstract

The utility model discloses an actuating mechanism of a transverse pressing type unlocking anti-pinch device of a platform door, which relates to the technical field of rail transit platform doors and comprises a sliding door frame, the actuating mechanism is mounted on the sliding door frame and comprises a pressing component, and a lifting component for disconnecting a sliding door is mounted on the pressing component. The lifting assembly is connected with the sliding door, the pressing assembly comprises a first connecting shaft, the first connecting shaft is rotationally installed on one side of a door frame of the sliding door, a second flange is fixedly installed at one end of the first connecting shaft, the pressing assembly further comprises a second connecting shaft, the two ends of the second connecting shaft are each fixedly provided with a crank shaft, and the crank shafts are connected with the first connecting shaft and the second connecting shaft. The risk that passengers pinch and hurt people can be effectively reduced through the executing mechanism, and the executing mechanism is convenient to install, easy to operate, low in production cost, low in assembly precision and machining precision requirements and convenient to popularize.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit platform doors, in particular to an actuator of a transverse extrusion unlocking anti-pinch mechanical device for a platform sliding door. Background Art

[0002] At present, there are many accidents of people being trapped in the space between subway trains and platform doors in China, which poses a great threat to the personal safety of passengers. The "Metro Design Code" (GB50157-2013) requires: "When a station is equipped with platform doors, the clear distance between the sliding door body of the platform door and the vehicle contour line (unopened) should be When the vehicle uses built-in doors or external doors, ". At present, domestic subway designs try to reduce the space gap between train doors and sliding doors while meeting regulatory requirements, and adopt a variety of safety measures to reduce the risk of passengers being pinched.

[0003] The patent with announcement number CN218438790U discloses a horizontal press unlocking mechanism, which adopts the parallelogram mechanical principle to realize the synchronous movement of the pressing touch plate within the full length of the sliding door frame. The synchronization mechanism includes components such as a fixed frame, a hinge seat, a reset frame, a reset torsion spring, a sliding block, a connecting rod, etc., which require many parts and high assembly precision. Otherwise, after the accumulated errors, the far end of the horizontal pressing touch plate cannot be unlocked when pressed. In addition, the failure of any component is likely to cause the parallelogram mechanical structure to fail, and the reliability is low. Moreover, the overall structure of the patent design is based on the aluminum alloy mold opening form. The screw grooves required in the horizontal pressing touch plate and the touch plate seat need to be stretched and molded at one time, which limits the material selection, and the cost is relatively high. High processing and assembly precision is required.

[0004] In addition, the utility model patent with the announcement number "CN212642376U" discloses that the "platform sliding door lateral squeeze unlocking anti-pinch mechanism" includes a conversion mechanism. This mechanism cooperates with the lateral pressing touch plate in the patent with the patent application number "CN202222673987.6" to realize the mechanical linkage with the lock rod. The platform sliding door lateral squeeze unlocking anti-pinch mechanism includes a swivel arm, a connecting shaft and a bearing. The bearing moves in the guide groove at the end of the pressing plate. The mechanism needs to be installed in the inner cavity of the sliding door frame (currently the lock rod assemblies are inserted into the inner cavity of the threshold from top to bottom as a whole). Therefore, the connecting shaft and the bearing can only be assembled on the outside of the door frame after the swivel arm is installed together with the lock rod assembly. It is difficult to fix the connecting shaft to the swivel arm in the inner cavity of the door frame. In addition, the movement trajectory of the connecting shaft driven by the rotating arm is an arc shape, so the processing and assembly accuracy requirements are high. During the application process, jamming may occur due to assembly problems, causing the entire platform door's horizontal push-to-unlock device to fail. Therefore, the utility model proposes an actuator for the platform door's horizontal push-to-unlock and anti-pinch device. Content of the Utility Model

[0005] In view of the above technical problems, the present utility model discloses an actuator of a horizontally pressed unlocking and anti-pinch device for platform doors, including a sliding door frame. An actuator is installed on the sliding door frame. The actuator includes a pressing assembly. An elevating assembly for disconnecting the sliding door is installed on the pressing assembly. The elevating assembly is connected to the sliding door. The pressing assembly includes a first connecting shaft, and the first connecting shaft is rotatably installed on one side of the sliding door frame. A second flange is fixedly installed at one end of the first connecting shaft. The pressing assembly further includes a second connecting shaft. A crankshaft is fixedly installed at each of the two ends of the second connecting shaft. The crankshaft at one end of the second connecting shaft is connected to the other end of the first connecting shaft. Two symmetrically distributed bearings are fixedly installed on the second connecting shaft. The crankshaft at the other end of the second connecting shaft is fixedly installed with a third connecting shaft. A fixing plate is rotatably installed on the third connecting shaft. The fixing plate is fixedly installed on the other side of the sliding door frame.

[0006] Further, the pressing assembly further includes a pressing touch plate. The bearing is connected to the pressing touch plate. The inside of the pressing touch plate is hollow and there is a notch on one side. The pressing touch plate is connected to the first connecting shaft and the third connecting shaft. An irregular guide groove is provided on each of the two end faces of the pressing touch plate. A touch plate end cover is provided at the lower end of the irregular guide groove. The touch plate end cover is preset a distance from the notch provided on one side of the pressing touch plate. A bottom decorative cover is connected by screws at the notch on one side of the pressing touch plate.

[0007] Further, the pressing assembly further includes two symmetrically distributed end fittings. A plurality of screw holes are provided on the end fittings. The end fittings are fixedly installed on one side of the sliding door frame through a plurality of bolts. A T-shaped guide plate is fixedly installed on the end fittings. The outer wall of the T-shaped guide plate is connected to the inner wall of the irregular guide groove.

[0008] Further, the elevating assembly includes a camshaft. A U-shaped bracket is rotatably installed on the camshaft. The U-shaped bracket is connected to the sliding door frame. A threaded shaft is fixedly installed at the first end of the camshaft. A nut locking assembly is threadedly connected to the threaded shaft. A first flange is fixedly installed at the second end of the camshaft. The first flange and the second flange are detachably connected. A cam is connected to the camshaft through a threaded pin.

[0009] The beneficial effects of the present utility model compared with the prior art are:

[0010] 1. The crankshaft is fixedly connected to the first connecting shaft, the second connecting shaft, and the third connecting shaft, enabling the second connecting shaft to press the lateral pressing touch plate synchronously, and preventing the problem that the displacements at both ends of the lateral pressing touch plate are different after pressing due to machining or assembly deviations. The mechanical structure of the crankshaft rotation synchronization scheme is simpler, with fewer components and higher reliability.

[0011] 2. The assembly scheme is more optimized. All components of this actuator are fixedly connected. The cam is radially fixed to the camshaft with a screw pin, the camshaft is flange-connected to the first connecting shaft, and the crankshaft, the second connecting shaft, and the third connecting shaft are mechanically fixed. Therefore, there will be no clearance deviation between moving components, which may cause the problem that the vertical displacement of the ejector rod is insufficient due to the cumulative clearance in the transmission chain after the lateral pressing touch plate is pressed, and it also avoids the problems of debugging and mechanical rectification during the assembly process.

[0012] 3. The interface between the actuator of the lateral pressing unlocking and anti-pinch device for platform doors and the sliding door is simple, and the movement of the actuator will not be blocked and fail due to interface problems. The U-shaped bracket, the cam mechanism, the camshaft, and the nut locking assembly are an integral whole. After being inserted into the inner cavity of the sliding door frame together with the locking rod, they are fixed. A round hole is reserved in the sliding door frame for the screw fixing operation of the first flange and the second flange. It solves the problems of complex interface parts and insufficient assembly accuracy in a limited space, which affect the use effect of the actuator. The interface between this actuator and the sliding door is simple, adapting to the structures of sliding doors from different brand manufacturers, providing favorable conditions for new lines and renovations.

[0013] 4. The components in this application are simplified in design and easy to process. The pressing touch plate can be manufactured by die-casting or welded with sheet metal parts. Either aluminum alloy or carbon steel can be selected as the material, and the cost is relatively low. Description of the Drawings

[0014] Figure 1 It is a diagram showing the installation position of the present utility model on the sliding door of the platform door.

[0015] Figure 2 It is a schematic diagram of the actuator of the present utility model.

[0016] Figure 3 It is a schematic diagram of the movement displacement of the actuator of the present utility model.

[0017] Reference Numerals in the Drawings: 1 - Locking Rod; 1-1 - Return Spring; 2 - Cam; 2-1 - Camshaft; 2-2 - Threaded Shaft; 2-3 - Nut Locking Assembly; 2-4 - Threaded Pin; 2-5 - First Flange; 3 - U-shaped Bracket; 4 - Sliding Door Frame; 5 - Second Flange; 5-1 - First Connecting Shaft; 5-2 - Crankshaft; 5-3 - Second Connecting Shaft; 5-4 - Third Connecting Shaft; 5-5 - Bearing; 6 - End Fitting; 6-1 - T-shaped Guide Plate; 6-2 - Screw Hole; 7 - Pressing Touch Plate; 7-1 - Touch Plate End Cover; 7-2 - Special-shaped Guide Groove; 7-3 - Screw; 7-4 - Bottom Decorative Cover; 8 - Fixed Plate. Detailed implementation mode

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0020] Embodiment: As Figures 1 - 3 shown, an actuator of a lateral pressing unlocking and anti-pinch device for platform doors includes a sliding door doorframe 4. An actuator is installed on the sliding door doorframe 4. The actuator includes a pressing assembly. An elevating assembly for disconnecting the sliding door is installed on the pressing assembly. The elevating assembly is connected to the sliding door. The pressing assembly includes a connecting shaft 1 (5-1). The connecting shaft 1 (5-1) is rotatably installed on one side of the sliding door doorframe 4. A flange 2 (5) is fixedly installed at one end of the connecting shaft 1 (5-1). The pressing assembly further includes a connecting shaft 3 (5-3). A crankshaft 2 (5-2) is fixedly installed at each of the two ends of the connecting shaft 3 (5-3). The crankshaft 2 (5-2) at one end of the connecting shaft 3 (5-3) is connected to the other end of the connecting shaft 1 (5-1). Two symmetrically distributed bearings 5 (5-5) are fixedly installed on the connecting shaft 3 (5-3). The crankshaft 2 (5-2) at the other end of the connecting shaft 3 (5-3) is fixedly installed with a connecting shaft 4 (5-4). A fixing plate 8 is rotatably installed on the connecting shaft 4 (5-4). The fixing plate 8 is fixedly installed on the other side of the sliding door doorframe 4. The pressing assembly has a simple structure, low production cost, convenient operation, and low requirement for processing accuracy, which is convenient for popularization.

[0021] The pressing assembly further includes a pressing touch plate 7. The bearing 5-5 is connected to the pressing touch plate 7. The interior of the pressing touch plate 7 is hollow and there is a notch on one side. The notch is used for the assembly of the pressing assembly. The pressing touch plate 7 is connected to the first connecting shaft 5-1 and the third connecting shaft 5-4. On both end faces of the pressing touch plate 7, there is respectively an irregular guide groove 7-2. At the lower end of the irregular guide groove 7-2, there is a touch plate end cover 7-1. The touch plate end cover 7-1 is at a preset distance from the notch provided on one side of the pressing touch plate 7. At the notch on one side of the pressing touch plate 7, a bottom decorative cover 7-4 is connected by a screw 7-3.

[0022] The pressing assembly further includes two symmetrically distributed end fittings 6. There are a plurality of screw holes 6-2 on the end fittings 6. The end fittings 6 are fixedly installed on one side of the sliding door frame 4 through a plurality of bolts in the screw holes 6-2. A T-shaped guide plate 6-1 is fixedly installed on the end fittings 6. The outer wall of the T-shaped guide plate 6-1 is connected to the inner wall of the irregular guide groove 7-2.

[0023] The lifting assembly includes a camshaft 2-1. A U-shaped bracket 3 is rotatably installed on the camshaft 2-1. The U-shaped bracket 3 is connected to the sliding door frame 4. A threaded shaft 2-2 is fixedly installed on the first end of the camshaft 2-1. A nut locking assembly 2-3 is threadedly connected to the threaded shaft 2-2. A first flange 2-5 is fixedly installed on the second end of the camshaft 2-1. The first flange 2-5 is detachably connected to the second flange 5. A cam 2 is connected to the camshaft 2-1 through a threaded pin 2-4.

[0024] The lifting assembly further includes a lock rod 1 which is provided in existing platform doors. The lock rod 1 is slidably installed in the sliding door frame 4. One end of the lock rod 1 is connected to the cam 2. A return spring 1-1 is provided on the lock rod 1. The first end of the return spring 1-1 is fixedly installed on the lock rod 1, and the second end of the return spring 1-1 is fixedly installed on the sliding door frame 4.

[0025] Working principle: When a person is pinched in the platform door, press the pressing touch plate 7. The irregular guide groove 7-2 on the pressing touch plate 7 moves downward along the T-shaped guide plate 6-1. The pressing touch plate 7 drives the second connecting shaft 5-3 to move through a plurality of bearings 5-5. The plurality of 5-5 are used to reduce the frictional resistance. The second connecting shaft 5-3 drives the first connecting shaft 5-1 and the third connecting shaft 5-4 to rotate respectively through two crank shafts 5-2. The first connecting shaft 5-1 drives the first flange 2-5 to rotate through the second flange 5. The first flange 2-5 drives the cam 2 to rotate through the camshaft 2-1. The cam 2 drives the cam 2 to move upward. At this time, the electromagnetic lock of the platform door system is unlocked and the circuit is disconnected, so that the train cannot depart. When the accident is over, release the pressing touch plate 7. At this time, the return spring 1-1 makes the lock rod 1 push the cam 2 through its own elastic force. The cam 2 drives the first flange 2-5 to move through the camshaft 2-1. The first flange 2-5 makes the pressing assembly reset through the second flange 5.

[0026] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An actuator for a lateral pressing unlocking and anti-pinch device for a platform door, characterized in that: The invention comprises a sliding door frame (4), an actuator is installed on the sliding door frame (4), the actuator comprises a pressing assembly, a lifting assembly for disconnecting the sliding door is installed on the pressing assembly, the lifting assembly is connected to the sliding door, the pressing assembly comprises a connecting shaft 1 (5-1), the connecting shaft 1 (5-1) is rotatably installed on one side of the sliding door frame (4), a flange 2 (5) is fixedly installed on one end of the connecting shaft 1 (5-1), the pressing assembly also comprises a connecting shaft 2 (5-3), the connecting shaft 2 (5-3) A crank shaft (5-2) is fixedly mounted on both ends of the connecting shaft (5-3), the crank shaft (5-2) on one end of the connecting shaft (5-3) is connected to the other end of the connecting shaft (5-1), two symmetrically distributed bearings (5-5) are fixedly mounted on the connecting shaft (5-3), the crank shaft (5-2) on the other end of the connecting shaft (5-3) is fixedly mounted with a connecting shaft (5-4), a fixing plate (8) is rotatably mounted on the connecting shaft (5-4), and the fixing plate (8) is fixedly mounted on the other side of the sliding door frame (4).

2. The actuator of the platform door lateral pressing unlocking and anti-pinch device according to claim 1, characterized in that: The pressing assembly also includes a pressing touch plate (7), the bearing (5-5) is connected to the pressing touch plate (7), the interior of the pressing touch plate (7) is hollow and a notch is provided on one side, the pressing touch plate (7) is connected to the connecting shaft 1 (5-1), the pressing touch plate (7) is connected to the connecting shaft 3 (5-4), a special-shaped guide groove (7-2) is provided on each of the two end surfaces of the pressing touch plate (7), a touch plate end cover (7-1) is provided at the lower end of the special-shaped guide groove (7-2), a preset distance is set between the touch plate end cover (7-1) and the notch provided on one side of the pressing touch plate (7), and the notch on one side of the pressing touch plate (7) is connected to a bottom decorative cover (7-4) via a screw (7-3).

3. The actuator of the platform door lateral pressing unlocking and anti-pinch device according to claim 2, characterized in that: The pressing assembly further comprises two symmetrically distributed end fittings (6), the end fittings (6) being provided with a plurality of screw holes (6-2), the screw holes (6-2) being used to fix the end fittings (6) on one side of the sliding door frame (4) through a plurality of bolts, the end fittings (6) being fixedly mounted with a T-shaped guide plate (6-1), the outer wall of the T-shaped guide plate (6-1) being connected to the inner wall of the special-shaped guide groove (7-2).

4. The actuator of the platform door lateral pressing unlocking and anti-pinch device according to claim 3, characterized in that: The lifting assembly comprises a camshaft (2-1), a U-shaped bracket (3) is rotatably mounted on the camshaft (2-1), the U-shaped bracket (3) is connected to a sliding door frame (4), a threaded shaft (2-2) is arranged on the first end of the camshaft (2-1), a nut locking assembly (2-3) is threadedly connected to the threaded shaft (2-2), a flange 1 (2-5) is fixedly mounted on the second end of the camshaft (2-1), the flange 1 (2-5) and the flange 2 (5) are detachably connected, and the camshaft (2-1) is connected to a cam (2) via a threaded pin (2-4).

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