Unlocking mechanism of subway sliding door

Abstract

The utility model discloses a subway sliding door unlocking mechanism, which comprises two groups of sliding doors, a support beam and a mounting frame fixed on the support beam, two groups of shifting forks are symmetrically arranged on the mounting frame, and the two shifting forks are respectively connected with the upper ends of the two groups of sliding doors. According to the unlocking mechanism of the subway sliding door, when the subway sliding door is used and the driving motor is in power failure and fault abnormity, the spline shaft, the second spline sleeve and the double-end lead screw are not in a locked state any more by interrupting the mutual matching of the unlocking assembly and the sliding assembly, and after the unlocking assembly is disconnected, the second spline sleeve and the double-end lead screw are not in a locked state any more. The push plate is pushed into the vertical sliding groove to abut against and limit, the unlocking state is kept, after operation is completed, the double-end lead screw is rotationally driven, the two sets of subway sliding doors are driven to be away from each other to be in the open state through transmission, and rapid unlocking operation under the emergency condition is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of subway sliding doors, in particular to an unlocking mechanism for subway sliding doors. Background Art

[0002] For the transmission of subway sliding doors, the more common drives are mainly screw drive and cylinder drive. Among them, screw drive is widely used due to its advantages such as smooth movement, high transmission efficiency and high transmission precision. In the process of driving the subway sliding door, the screw drive has the self-locking effect of the screw drive through the self-locking motor, so that the subway sliding door after driving remains locked, which facilitates safer closing and opening of the subway sliding door.

[0003] However, due to the self-locking motor on the screw drive that self-locks the screw drive, when the motor fails or the power is cut off, the subway sliding door remains in the locked state after transmission, and it is difficult to unlock it manually, which is inconvenient for the use of the subway sliding door in emergency situations.

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

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] The unlocking mechanism of a subway sliding door comprises a sliding door, a supporting beam and an installation frame fixed on the supporting beam, the sliding door is provided with two groups, and two groups of shift forks are symmetrically arranged on the installation frame, and the two shift forks are respectively connected to the upper ends of the two groups of sliding doors, and also comprises a driving self-locking component arranged inside the installation frame for driving the two groups of shift forks to self-lock, and the driving self-locking component comprises two groups of mounting frames fixed inside the installation frame, a double-headed screw rod is rotatably connected between the two groups of mounting frames, and the threads at both ends of the double-headed screw rod are arranged in opposite directions. The two ends of the double-headed screw rod are respectively meshed and connected with two groups of transmission plates, the two transmission plates are respectively fixed to the two shift forks, and the two transmission plates are slidably connected with guide rods, and the guide rods are fixed between the two groups of mounting frames, and a driving motor for driving the double-headed screw rod is arranged inside the installation frame, and the output end of the driving motor is connected to one end of the double-headed screw rod through a transmission assembly, and an interruption unlocking component for interrupting transmission unlocking is arranged on the installation frame.

[0007] The transmission assembly includes a first spline sleeve fixed to the output end of the driving motor, a second spline sleeve is fixed to one end of the double-headed screw, a spline shaft is connected between the first spline sleeve and the second spline sleeve, and the first spline sleeve and the second spline sleeve are connected for transmission through the spline shaft.

[0008] The interrupt unlocking component includes a mounting plate fixed on the spline shaft, the outer side of the mounting plate is connected to a mounting ring via a connecting component, a push plate is fixed on the mounting ring, a sliding component for assisting the sliding of the push plate is provided on the outer side of the mounting frame, and a reset component for assisting the reset of the rear mounting ring is provided on the second spline sleeve.

[0009] The connection assembly includes an annular groove formed on the inner wall of the mounting ring, an annular plate is rotatably connected to the annular groove, the inner side of the annular plate is fixed to the mounting disk, and the cross-sections of the annular groove and the annular plate are T-shaped.

[0010] The sliding assembly comprises a transverse sliding groove formed on the mounting frame, the push plate is located on the transverse sliding groove, and a vertical sliding groove is formed at one end of the transverse sliding groove away from the driving motor.

[0011] The reset assembly includes a plurality of sleeves fixed on one side of the mounting ring, the outer side of the second spline sleeve is rotatably connected to a connecting ring, each of the sleeves is slidably connected to a sliding rod, one end of the sliding rod is fixed to one side of the connecting ring, and a spring is provided on the outer side of each of the sleeves.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses an unlocking mechanism for subway sliding doors. When the subway sliding doors are in use, when the driving motor is powered off or malfunctions, the cooperation between the unlocking assembly and the sliding assembly is interrupted, so that the spline shaft, the second spline sleeve and the double-headed screw are no longer in a locked state. After the connection is disconnected, the push plate is pushed into the vertical slide groove to limit the position against each other and maintain the unlocked state. After the operation is completed, the double-headed screw is driven to rotate, and through transmission, the two groups of subway sliding doors are driven to move away from each other and be in an open state, thereby realizing a rapid unlocking operation in an emergency.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the drive self-locking component of the utility model;

[0018] Figure 3 It is a schematic diagram of the transmission component structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structures of the interruption unlocking component, the connection component and the reset component of the utility model.

[0020] In the figure: 101-support beam; 102-mounting frame; 103-shift fork; 201-mounting frame; 202-double-headed screw; 203-transmission plate; 204-guide rod; 205-drive motor; 301-first spline sleeve; 302-second spline sleeve; 303-spline shaft; 401-mounting plate; 402-mounting ring; 403-push plate; 501-annular groove; 502-annular plate; 601-horizontal slide groove; 602-vertical slide groove; 701-connecting ring; 702-sleeve; 703-slide rod; 704-spring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0022] like Figures 1 to 4 As shown, the subway sliding door unlocking mechanism includes a sliding door, a support beam 101 and a mounting frame 102 fixed on the support beam 101, wherein the sliding door is provided with two groups, and two groups of shift forks 103 are symmetrically arranged on the mounting frame 102, and the two shift forks 103 are respectively connected to the upper ends of the two groups of sliding doors, and further includes a driving self-locking component arranged inside the mounting frame 102 for driving the two groups of shift forks 103 to self-lock, and the driving self-locking component includes two groups of mounting frames 201 fixed inside the mounting frame 102, and a double-headed screw rod 202 is rotatably connected between the two groups of mounting frames 201, and the double-headed screw rod 20 The threads at both ends are arranged in opposite directions, and two sets of transmission plates 203 are respectively meshed and connected at both ends of the double-ended screw rod 202, and the two transmission plates 203 are respectively fixed to the two shift forks 103, and the two transmission plates 203 are slidably connected with guide rods 204, which are fixed between the two sets of mounting frames 201. A driving motor 205 for driving the double-ended screw rod 202 is arranged inside the mounting frame 102, and the output end of the driving motor 205 is connected to one end of the double-ended screw rod 202 through a transmission component, and an interruption unlocking component for unlocking the transmission interruption is arranged on the mounting frame 102;

[0023] It should be noted here that the drive motor 205 is a self-locking motor;

[0024] When the subway sliding door is in use, when the driving motor 205 is powered off or malfunctions, the cooperation between the unlocking assembly and the sliding assembly is interrupted, so that the spline shaft 303, the second spline sleeve 302 and the double-headed screw rod 202 are no longer in a locked state. After the connection is disconnected, the push plate 403 is pushed into the vertical slide groove 602 to limit the position and maintain the unlocked state. After the operation is completed, the double-headed screw rod 202 is driven to rotate, and through transmission, the two groups of subway sliding doors are driven to move away from each other and open, thereby realizing a quick unlocking operation in an emergency.

[0025] The transmission assembly includes a first spline sleeve 301 fixed at the output end of the driving motor 205, a second spline sleeve 302 is fixed at one end of the double-ended screw rod 202, a spline shaft 303 is connected between the first spline sleeve 301 and the second spline sleeve 302, and the first spline sleeve 301 and the second spline sleeve 302 are connected for transmission through the spline shaft 303; the first spline sleeve 301 is driven to rotate by the driving motor 205, and during the rotation of the first spline sleeve 301, the double-ended screw rod 202 is driven to rotate through the transmission action of the first spline sleeve 301, the spline shaft 303 and the second spline sleeve 302.

[0026] The interrupt unlocking component includes a mounting plate 401 fixed on the spline shaft 303, the outer side of the mounting plate 401 is connected to a mounting ring 402 through a connecting component, a push plate 403 is fixed to the mounting ring 402, a sliding component for assisting the sliding of the push plate 403 is provided on the outer side of the mounting frame 102, and a reset component for assisting the reset of the rear mounting ring 402 is provided on the second spline sleeve 302; the push plate 403 is slid on the transverse slide groove 601, and during the sliding process, the spline shaft 303 is driven to move toward the second spline sleeve 302 through the connection between the mounting ring 402 and the mounting plate 401, and during the movement, the connection between the spline shaft 303 and the first spline sleeve 301 is disconnected.

[0027] The connecting component includes an annular groove 501 formed on the inner wall of the mounting ring 402, an annular plate 502 is rotatably connected to the annular groove 501, the inner side of the annular plate 502 is fixed to the mounting disk 401, and the cross-sections of the annular groove 501 and the annular plate 502 are T-shaped; the annular groove 501 and the annular plate 502 facilitate the mounting ring 402 to be rotatably connected to the outer side of the mounting disk 401, and the connection between the annular groove 501 and the annular plate 502 facilitates the mounting disk 401 to move during the movement of the mounting ring 402.

[0028] The sliding assembly includes a horizontal slide groove 601 opened on the installation frame 102, and the push plate 403 is located on the horizontal slide groove 601. A vertical slide groove 602 is opened at one end of the horizontal slide groove 601 away from the drive motor 205; the horizontal slide groove 601 is used to facilitate the sliding guidance of the push plate 403, and the vertical slide groove 602 is used to facilitate the push plate 403 to be locked in and limited after horizontal sliding.

[0029] The reset assembly includes a plurality of sleeves 702 fixed on one side of the mounting ring 402, the outer side of the second spline sleeve 302 is rotatably connected to the connecting ring 701, and each sleeve 702 is slidably connected to a slide rod 703, one end of the slide rod 703 is fixed to one side of the connecting ring 701, and a spring 704 is sleeved on the outer side of each sleeve 702; during the movement of the mounting ring 402, the slide rod 703 is pushed to slide on the sleeve 702 and the spring 704 is deformed by force to generate elastic force, and the elastic force of the spring 704 facilitates the reset movement operation of the mounting ring 402 after the auxiliary movement.

[0030] When the subway sliding door is in use, the first spline sleeve 301 is driven to rotate by the driving motor 205. During the rotation of the first spline sleeve 301, the double-headed screw 202 is driven to rotate by the transmission effect of the first spline sleeve 301, the spline shaft 303 and the second spline sleeve 302. Because the threads at both ends of the double-headed screw 202 are arranged in opposite directions, during the rotation of the double-headed screw 202, the two ends of the double-headed screw 202 are respectively meshed with the two transmission plates 203 and the sliding guiding effect of the multiple guide rods 204 on the transmission plates 203 after being stressed, so that the two transmission plates 203 are forced to move closer to or away from each other. During the movement of the two transmission plates 203, the two sliding doors are driven to move synchronously through the connection transmission of the two forks 103 to realize the driving of the sliding doors. In the driving process, the two sets of sliding doors after transmission are locked by the self-locking effect of the driving motor 205, so that the subway sliding door is safer and more stable to use.

[0031] After driving the subway sliding door to close, when the driving motor 205 is powered off or fails, the push plate 403 slides on the horizontal slide groove 601. During the sliding process, the spline shaft 303 is driven to move toward the second spline sleeve 302 through the connection between the mounting ring 402 and the mounting plate 401. During the movement, the connection between the spline shaft 303 and the first spline sleeve 301 is disconnected, so that the spline shaft 303, the second spline sleeve 302 and the double-headed screw rod 202 are no longer in a locked state. After the connection is disconnected, the push plate 403 is pushed into the vertical slide groove 602 for mutual limiting and maintaining the unlocked state. After the operation is completed, the double-headed screw rod 202 is driven to rotate, and through transmission, the two groups of subway sliding doors are driven to move away from each other and open, thereby realizing a quick unlocking operation in an emergency.

Claims

1. Subway sliding door unlocking mechanism, including: A sliding door, a support beam (101) and a mounting frame (102) fixed on the support beam (101), wherein the sliding door is provided in two groups, and two groups of shift forks (103) are symmetrically provided on the mounting frame (102), and the two shift forks (103) are respectively connected to the upper ends of the two groups of sliding doors; It is characterized by further comprising: A driving self-locking assembly for driving two groups of shift forks (103) to self-lock is arranged inside the installation frame (102), and the driving self-locking assembly includes two groups of mounting frames (201) fixed inside the installation frame (102), a double-headed screw rod (202) is rotatably connected between the two groups of mounting frames (201), and the threads at both ends of the double-headed screw rod (202) are arranged in opposite directions, and the two ends of the double-headed screw rod (202) are respectively meshed and connected with two groups of transmission plates (203), and the two transmission plates (203) are respectively connected to the two The two transmission plates (203) are fixed to each other, and a guide rod (204) is slidably connected to the two transmission plates (203). The guide rod (204) is fixed between the two groups of mounting frames (201). A driving motor (205) for driving the double-headed screw rod (202) is arranged inside the mounting frame (102). The output end of the driving motor (205) is connected to one end of the double-headed screw rod (202) through a transmission component. The mounting frame (102) is provided with an interruption unlocking component for unlocking the transmission interruption.

2. The subway sliding door unlocking mechanism according to claim 1, characterized in that: The transmission assembly comprises a first spline sleeve (301) fixed to the output end of the driving motor (205); a second spline sleeve (302) is fixed to one end of the double-ended screw rod (202); a spline shaft (303) is connected between the first spline sleeve (301) and the second spline sleeve (302); and the first spline sleeve (301) and the second spline sleeve (302) are connected for transmission via the spline shaft (303).

3. The subway sliding door unlocking mechanism according to claim 2, characterized in that: The interrupt unlocking component comprises a mounting plate (401) fixed on the spline shaft (303); the outer side of the mounting plate (401) is connected to a mounting ring (402) via a connecting component; a push plate (403) is fixed to the mounting ring (402); a sliding component for assisting the push plate (403) in sliding is arranged on the outer side of the mounting frame (102); and a reset component for assisting the reset of the rear mounting ring (402) is arranged on the second spline sleeve (302).

4. The subway sliding door unlocking mechanism according to claim 3, characterized in that: The connection assembly comprises an annular groove (501) formed on the inner wall of the mounting ring (402), an annular plate (502) being rotatably connected to the annular groove (501), the inner side of the annular plate (502) being fixed to the mounting plate (401), and the cross-sections of the annular groove (501) and the annular plate (502) being arranged in a T-shape.

5. The subway sliding door unlocking mechanism according to claim 3, characterized in that: The sliding assembly comprises a transverse sliding groove (601) provided on the mounting frame (102), the push plate (403) is located on the transverse sliding groove (601), and a vertical sliding groove (602) is provided at one end of the transverse sliding groove (601) away from the driving motor (205).

6. The subway sliding door unlocking mechanism according to claim 3, characterized in that: The reset assembly comprises a plurality of sleeves (702) fixed on one side of the mounting ring (402); the outer side of the second spline sleeve (302) is rotatably connected to a connecting ring (701); each sleeve (702) is slidably connected to a slide rod (703); one end of the slide rod (703) is fixed to one side of the connecting ring (701); and a spring (704) is sleeved on the outer side of each sleeve (702).

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