A push rod lock mechanism for emergency doors of rail transit platforms

Abstract

The present invention discloses a push rod lock mechanism for an emergency door of a rail transit platform, comprising a panel lock, a push rod, a push rod shaft and a rod lock assembly, wherein the rod lock assembly comprises an upper lock plate, a lower lock plate, a turntable, an upper lock rod connected to an emergency door lintel and a lower lock rod connected to an emergency door threshold, wherein the upper lock rod is connected to one side of the turntable through the upper lock plate, and the lower lock rod is connected to the other side of the turntable through the lower lock plate, wherein the panel lock is connected to the rod lock assembly, and one end of the push rod shaft is provided with a card slot opening to the turntable, wherein the rod lock assembly is connected to one end of the push rod shaft through the card slot, and the other end of the push rod shaft is connected to the push rod. In the present invention, when the turntable is driven to rotate in an unlocking direction by the panel lock, the upper lock plate, the lower lock plate, the upper lock rod and the lower lock rod all move toward the turntable, so that the rod lock assembly will not abut against the card slot during the unlocking process, that is, when the key is used to unlock, the push rod will not be linked, so as to facilitate the operation of the platform staff.

Description

Technical Field

[0001] The invention relates to the technical field of platform screen doors, and in particular to a push rod lock mechanism for emergency doors of rail transit platforms. Background Art

[0002] The platform emergency door is set at the platform side area. During normal operation, the emergency door is closed and locked, isolating the public area from the track area; it can be used as an emergency evacuation channel for passengers when the train cannot align with the sliding door when entering the station. The emergency door is equipped with a door lock device on the platform side and a door push rod on the track side. Platform staff can open the door with a key on the platform side, and passengers can push the door push rod on the track side to open the door.

[0003] Therefore, the platform emergency door, as an emergency evacuation passage, must ensure normal opening and closing functions. However, in actual situations, the following situations often occur, resulting in abnormal opening and closing functions of the emergency door: First, due to the short push rod lock stroke, the emergency door is not securely locked when closed, and the tunnel wind pressure blows the emergency door open; Second, the emergency door panel lock is linked to the manual push rod when unlocked with a key, resulting in excessive manual unlocking force, which is not conducive to operation by platform staff; Third, the emergency door push rod lock mechanism is enclosed in a box, which is inconvenient to operate during inspection and maintenance. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a push rod lock mechanism for rail transit platform emergency doors, which can solve the problem that the platform emergency doors cannot ensure normal opening and closing of the doors.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] The push rod lock mechanism for an emergency door of a rail transit platform comprises a panel lock arranged on the platform side, a push rod arranged on the track side, a push rod rotating shaft and a rod lock assembly arranged in the emergency door frame, wherein the rod lock assembly comprises an upper lock plate, a lower lock plate, a turntable, an upper lock rod connected to the emergency door lintel and a lower lock rod connected to the emergency threshold, the upper lock rod is connected to one side of the turntable through the upper lock plate, the lower lock rod is connected to the other side of the turntable through the lower lock plate, the panel lock is connected to the rod lock assembly, one end of the push rod rotating shaft is provided with a clamping groove opening toward the turntable, the rod lock assembly is connected to one end of the push rod rotating shaft through the clamping groove, and the other end of the push rod rotating shaft is connected to the push rod; the panel lock is used to drive the turntable to rotate in an unlocking direction so that the upper lock plate, the lower lock plate, the upper lock rod and the lower lock rod all move toward the turntable; the push rod is used to drive the turntable to rotate in the unlocking direction through the push rod rotating shaft so that the upper lock plate, the lower lock plate, the upper lock rod and the lower lock rod all move toward the turntable.

[0007] Preferably, it further comprises a fixing rod, the lower locking rod is connected to one end of the fixing rod, and the other end of the fixing rod is engaged with the card slot.

[0008] Preferably, it also includes a connecting plate and a rotating shaft for driving the push rod rotating shaft to rotate, the upper end of the connecting plate is connected to the other end of the push rod rotating shaft through the rotating shaft, and the push rod is connected to the lower end of the connecting plate.

[0009] Preferably, the panel lock comprises a lock body and a lock tongue, and the lock body is connected to the lower lock plate via the lock tongue.

[0010] Preferably, the turntable includes a fixing hole, an upper locking hole and a lower locking hole, and the upper locking hole and the lower locking hole are symmetrically arranged with the fixing hole as the center of symmetry. The turntable is connected to the emergency door frame through the fixing hole, the upper locking plate is connected to the turntable through the upper locking hole, and the lower locking plate is connected to the turntable through the lower locking hole.

[0011] Preferably, it also includes a lower lock body frame, which includes a first directional plate, a second directional plate and a lower side plate, the first directional plate is connected to the second directional plate through the lower side plate, and the lower lock rod passes through the first directional plate and the second directional plate in sequence to be connected to the emergency threshold.

[0012] Preferably, it further comprises a first elastic element and a lower baffle plate, wherein the lower baffle plate is sleeved on the lower locking rod, and the first elastic element is arranged between the lower baffle plate and the first directional plate.

[0013] Preferably, it also includes a locking body frame, which includes a third directional plate, a fourth directional plate and an upper side plate, the third directional plate is connected to the fourth directional plate through the side plate, and the locking rod passes through the third directional plate and the fourth directional plate in sequence to be connected to the emergency lintel.

[0014] Preferably, it further comprises a second elastic element and an upper baffle plate, wherein the upper baffle plate is sleeved on the upper locking rod, and the second elastic element is arranged between the upper baffle plate and the third directional plate.

[0015] Preferably, the upper lock body frame also includes a collision plate and a third elastic element for driving the collision plate to abut against the upper baffle plate, the upper end of the collision plate extends upward to form an abutment block inclined from the emergency door frame toward the emergency door lintel, the upper end of the collision plate is connected to the upper side plate, and the third elastic element is arranged between the collision plate and the upper side plate.

[0016] Compared with the prior art, the beneficial effect of the present invention is that: the push rod lock mechanism used for the emergency door of the rail transit platform is concealedly installed inside the emergency door frame for easy inspection and maintenance. At the same time, the push rod is connected with the lower locking rod through the slot of the turntable through the opening on the push rod shaft, so that when the user unlocks the door with a key on the platform side, the lower locking rod directly leaves the slot from the slot opening and does not drive the push rod shaft to move, thereby reducing the unlocking force of the station staff when unlocking the door on the platform side, avoiding excessive unlocking force that may cause the key to break or damage the push rod lock mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the rail transit platform emergency door described in the present invention.

[0018] Figure 2 It is a structural schematic diagram of the push rod lock mechanism for emergency doors of rail transit platforms described in the present invention.

[0019] Figure 3 It is a structural schematic diagram of the turntable described in the present invention in an unlocked state.

[0020] Figure 4 It is a structural schematic diagram of the push rod rotating shaft in the unlocked state described in the present invention.

[0021] Figure 5 It is a structural schematic diagram of the lower lock body frame described in the present invention in an unlocked state.

[0022] Figure 6 It is a structural schematic diagram of the upper locking body frame described in the present invention in an unlocked state.

[0023] Figure 7 It is a structural schematic diagram of the turntable in the present invention in a locked state.

[0024] Figure 8 It is a structural schematic diagram of the push rod rotating shaft in the present invention being in a locked state.

[0025] Fig. 9 It is a structural schematic diagram of the lower lock body frame described in the present invention in a locked state.

[0026] Fig.10 It is a structural schematic diagram of the upper locking body frame described in the present invention in a locked state.

[0027] In the figure: 1-panel lock; 11-lock body; 12-lock tongue; 2-push rod; 3-push rod shaft; 31-card slot; 32-connecting plate; 33-shaft; 4-rod lock assembly; 41-upper lock plate; 42-lower lock plate; 43-turntable; 431-fixing hole; 432-upper lock hole; 433-lower lock hole; 44-upper lock rod; 45-lower lock rod; 451-fixing rod; 5-lower lock body frame; 51-first directional plate; 52-second directional plate; 53-lower side plate; 54-first elastic element; 55-lower baffle plate; 6-upper lock body frame; 61-third directional plate; 62-fourth directional plate; 63-upper side plate; 64-second elastic element; 65-upper baffle plate; 66-collision plate; 67-third elastic element; 68-resistance block. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Below, the present invention is further described in conjunction with the accompanying drawings and specific embodiments:

[0032] In the present invention, the rail transit platform emergency door includes subway platform emergency door, train platform emergency door and high-speed rail platform emergency door, etc. The push rod lock mechanism applied to the rail transit platform emergency door is installed in the emergency door body frame in a concealed manner, and the upper lock plate 41, the lower lock plate 42 and the turntable 43 are all movably connected to the emergency door body frame through guide gaskets and screws. The panel lock 1 can be inserted into the lock body 11 by a key, and the turntable 43 is driven to rotate in the unlocking direction through the lock tongue 12 to achieve unlocking; the shape of the turntable 43 is not limited to a circle, and can also be a regular or irregular polygon such as a square or a triangle. The lower locking plate 42 and the lower locking rod 45 are both arranged below the turntable 43, and the upper locking plate 41 and the upper locking rod 44 are both arranged above the turntable 43, so when the turntable 43 rotates in the unlocking direction, the lower locking plate 42 and the lower locking rod 45 both move upward, and the upper locking plate 41 and the upper locking rod 44 both move downward; when the turntable 43 rotates in the locking direction, the lower locking plate 42 and the lower locking rod 45 both move downward, and the upper locking plate 41 and the upper locking rod 44 both move upward.

[0033] like Figure 1-10 As shown, a push rod lock mechanism for an emergency door of a rail transit platform includes a panel lock 1 arranged on the platform side, a push rod 2 arranged on the track side, a push rod rotating shaft 3, and a rod lock assembly 4 arranged in the emergency door frame. Preferably, the panel lock 1 includes a lock body 11 and a lock tongue 12, the lock body 11 is connected to the rod lock assembly 4 through the lock tongue 12, the rod lock assembly 4 includes an upper lock plate 41, a lower lock plate 42, a turntable 43, an upper lock rod 44 connected to the emergency door lintel, and a lower lock rod 45 connected to the emergency threshold, the upper lock rod 44 is connected to one side of the turntable 43 through the upper lock plate 41, and the lower lock rod 45 is connected to the turntable 4 through the lower lock plate 42. 3, the panel lock 1 is connected to the rod lock assembly 4, one end of the push rod shaft 3 is provided with a slot 31 opening to the turntable 43, the rod lock assembly 4 is connected to one end of the push rod shaft 3 through the slot 31, and the other end of the push rod shaft 3 is connected to the push rod 2; preferably, the lower locking rod 45 is also provided with a transversely arranged fixing rod 451, the slot 31 of the push rod shaft 3 is engaged with the fixing rod 451, so that when the panel lock 1 drives the turntable 43 to rotate in the unlocking direction, the fixing rod 451 can be directly disengaged from the slot 31, that is, when the station staff uses the key to unlock, the lower locking rod 45 and the push rod shaft 3 are not linked.

[0034] In this embodiment, the push rod 2 is connected to the push rod shaft 3 through the connecting plate 32. Preferably, the upper end of the connecting plate 32 is connected to the push rod shaft 3 through the shaft 33, and the push rod 2 is connected to the lower end of the connecting plate 32, so that when the passenger presses down the push rod 2, the push rod 2 drives the push rod shaft 3 to rotate upward around the axis through the connecting plate 32, and at the same time, the card slot 31 drives the lower locking rod 45 to move upward through the fixing rod 451, and the lower locking rod 45 drives the turntable 43 to rotate in the unlocking direction through the lower locking plate 42. The turntable 43 includes a fixing hole 431, an upper locking hole 432 and a lower locking hole 433. The upper locking hole 432 and the lower locking hole 433 are symmetrically arranged with the fixing hole 431 as the symmetry center. The turntable 43 is connected to the emergency door frame through the fixing hole 431, the upper locking plate 41 is connected to the turntable 43 through the upper locking hole 432, and the lower locking plate 42 is connected to the turntable 43 through the lower locking hole 433, which can further drive the upper locking plate 41 and the upper locking rod 44 to move downward, thereby achieving the purpose of unlocking.

[0035] Preferably, the lower lock rod 45 is also equipped with a lower lock body frame 5, a first elastic element 54 and a lower baffle plate 55 composed of a first directional plate 51, a second directional plate 52 and a lower side plate 53. Specifically, the first directional plate 51 is connected to the second directional plate 52 through the lower side plate 53, that is, the lower lock body frame 5 is a "U"-shaped structure, and the lower lock rod 45 passes through the first directional plate 51, the elastic element (spring) 54, the lower baffle plate 55, the second directional plate 52 in sequence and is connected to the emergency threshold, wherein the lower baffle plate 55 is connected to the emergency threshold by fasteners or The lower locking rod 45 is fixedly mounted on the lower locking rod 45 by welding or other methods. When the station staff unlocks the emergency door through the panel lock 1 or the passenger unlocks the emergency door through the push rod 2, the lower locking rod 45 drives the lower baffle plate 55 to move upward. When the lower baffle plate 55 moves upward, the first elastic element 54 (spring) is pressed against the first directional plate 51, so that the first elastic element 54 (spring) is in a compressed state; when the emergency door is locked, the elastic potential energy of the first elastic element 54 (spring) is released, driving the lower locking rod 45 to move downward and engage on the emergency threshold. Further, similarly, the upper locking body frame 6, the second elastic element 64 and the upper baffle plate 65 are installed on the upper locking rod 44, and the upper locking rod 44 passes through the third directional plate 61, the second elastic element 64, the upper baffle plate 65, and the fourth directional plate 62 in sequence to connect with the emergency door lintel.

[0036] Furthermore, the upper lock body frame 6 also includes a collision plate 66 and a third elastic element 67. The upper end of the collision plate 66 is hinged to the upper side plate 63, and a third elastic element 67 (spring) is also provided between the collision plate 66 and the upper side plate 63. The third elastic element 67 (spring) drives the lower end of the collision plate 66 to move in the direction of the upper locking rod 44 and abuts against the locking rod 44. When the station staff unlocks the emergency door through the panel lock 1 or the passenger unlocks the emergency door through the push rod 2, the upper baffle 65 presses the second elastic element 64 downward. When the locking rod 44 is completely After detaching from the emergency lintel, the height of the upper baffle plate 65 should be lower than the height of the lower end of the collision plate 66. At this time, the collision plate 66, driven by the third elastic element 67 (spring), abuts against the upper end surface of the upper baffle plate 65, and prevents the second elastic element 64 (spring) from continuing to push the locking rod 44 upward through the upper baffle plate 65. When the locking rod 44 cannot continue to move upward, the turntable 43 is also restricted from rotating in the locking direction, that is, the lower locking rod 45 cannot continue to move downward under the action of the elastic potential energy of the first elastic element 54 (spring). Furthermore, the upper end of the collision plate 66 extends upward to form an abutment block 68 inclined from the emergency door frame toward the emergency door lintel. When the emergency door needs to be closed, as the emergency door frame gradually approaches the emergency door lintel, the abutment block 68 and the emergency door lintel abut against each other, and begin to flip downward under the drive of the emergency door lintel. At the same time, the lower end of the collision plate 66 begins to flip upward around the connection point between the collision plate 66 and the upper side plate 63, that is, the lower end of the collision plate 66 compresses the third elastic element 67 (spring) in the direction away from the locking rod 44, and finally the lower end of the collision plate 66 is released from the abutment with the upper end surface of the upper baffle plate 65, that is, the downward resistance of the upper baffle plate 65 is removed, and under the action of the elastic potential energy of the first elastic element 54 (spring) and the second elastic element 64 (spring), the lower locking rod 45 moves downward and interlocks with the emergency door sill, and the upper locking rod 44 moves upward and interlocks with the emergency door lintel.

[0037] Specifically, the working principle and composition of the present invention are described as follows:

[0038] In the present invention, the push rod lock mechanism for the emergency door of the rail transit platform can be unlocked in two ways: unlocking with a key on the platform side and unlocking with the push rod 2 on the track side; specifically, when unlocking the emergency door on the platform side, the station staff inserts the special key into the keyhole of the panel lock 1, rotates the key 75° clockwise, and the lock body 11 drives the lower lock plate 42 to move upward through the lock tongue 12, driving the lower lock rod 45 to move upward, so that the lower lock rod 45 is separated from the emergency threshold. In this process, the opening direction of the slot 31 on the push rod shaft 3 is toward the turntable 43, so when the lower lock rod 45 moves upward, the fixed rod 451 directly leaves the slot 31 from the slot 31 opening, and does not drive the push rod shaft 3 to move, thereby reducing the unlocking force of the station staff when unlocking on the platform side, avoiding excessive unlocking force to cause the key to break or damage the push rod lock mechanism.

[0039] When the track side push rod 2 is unlocked, the passenger presses down the push rod 2, and the push rod 2 and the connecting plate 32 move downward, and the push rod shaft 3 is driven to flip upward through the shaft 33. At the same time, the fixing rod 451 stuck in the slot 31 is synchronously driven upward by the push rod shaft 3, thereby driving the lower locking plate 42 and the lower locking rod 45 to move upward.

[0040] When the lower lock plate 42 moves upward, the turntable 43 is also driven to rotate in the unlocking direction, and the upper lock rod 44 is driven to move downward through the upper lock plate 41, so that the upper lock rod 44 and the emergency door lintel are separated from each other, and then the lower end of the collision plate 66 is driven by the third elastic element 67 to abut against the upper end surface of the upper baffle plate 65, thereby preventing the second elastic element 64 (spring) from continuing to push the upper lock rod 44 upward through the upper baffle plate 65. When the upper lock rod 44 cannot continue to move upward, the turntable 43 is also restricted from rotating in the locking direction, that is, the lower lock rod 45 cannot continue to move downward under the action of the elastic potential energy of the first elastic element 54 (spring).

[0041] When closing the emergency door, as the emergency door frame gradually approaches the emergency door lintel, the abutment block 68 abuts against the emergency door lintel and begins to flip downward under the drive of the emergency door lintel. At the same time, the lower end of the collision plate 66 begins to flip upward around the connection point between the collision plate 66 and the upper side plate 63, that is, the lower end of the collision plate 66 compresses the third elastic element 67 (spring) in the direction away from the locking rod 44. Finally, the lower end of the collision plate 66 releases the abutment with the upper end surface of the upper baffle plate 65, that is, the downward resistance of the upper baffle plate 65 is removed. Under the action of the elastic potential energy of the first elastic element 54 (spring) and the second elastic element 64 (spring), the lower locking rod 45 moves downward and interlocks with the emergency door sill, and the upper locking rod 44 moves upward and interlocks with the emergency door lintel.

[0042] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

1. A push rod lock mechanism for an emergency door of a rail transit platform, characterized in that: The door lock assembly comprises a panel lock arranged on the platform side, a push rod arranged on the track side, a push rod rotating shaft and a rod lock assembly arranged in the emergency door frame, the rod lock assembly comprises an upper lock plate, a lower lock plate, a turntable, an upper lock rod connected to the emergency door lintel and a lower lock rod connected to the emergency threshold, the upper lock rod is connected to one side of the turntable through the upper lock plate, and the lower lock rod is connected to the other side of the turntable through the lower lock plate, the panel lock is connected to the rod lock assembly, one end of the push rod rotating shaft is provided with a clamping groove opening toward the turntable, the rod lock assembly is connected to one end of the push rod rotating shaft through the clamping groove, and the other end of the push rod rotating shaft is connected to the push rod; the panel lock is used to drive the turntable to rotate in the unlocking direction so that the upper lock plate, the lower lock plate, the upper lock rod and the lower lock rod all move toward the turntable direction; the push rod is used to drive the turntable to rotate in the unlocking direction through the push rod rotating shaft so that the upper lock plate, the lower lock plate, the upper lock rod and the lower lock rod all move toward the turntable direction, It also includes a fixing rod, the lower locking rod is connected to one end of the fixing rod, and the other end of the fixing rod is engaged with the card slot. It also includes an upper lock body frame, which includes a third directional plate, a fourth directional plate and an upper side plate, the third directional plate is connected to the fourth directional plate through the side plate, and the upper locking rod passes through the third directional plate and the fourth directional plate in sequence and is connected to the emergency door lintel. It also includes a second elastic element and an upper baffle, wherein the upper baffle is sleeved on the upper locking rod, and the second elastic element is arranged between the upper baffle and the third directional plate. The upper lock body frame also includes a collision plate and a third elastic element for driving the collision plate to abut against the upper baffle plate. The upper end of the collision plate extends upward to form an abutment block inclined from the emergency door frame toward the emergency door lintel. The upper end of the collision plate is connected to the upper side plate, and the third elastic element is arranged between the collision plate and the upper side plate.

2. The push rod lock mechanism for emergency doors of rail transit platforms according to claim 1, characterized in that: It also includes a connecting plate and a rotating shaft for driving the push rod rotating shaft to rotate. The upper end of the connecting plate is connected to the other end of the push rod rotating shaft through the rotating shaft, and the push rod is connected to the lower end of the connecting plate.

3. The push rod lock mechanism for emergency doors of rail transit platforms according to claim 1, characterized in that: The panel lock comprises a lock body and a lock tongue, and the lock body is connected to the lower lock plate through the lock tongue.

4. The push rod lock mechanism for emergency doors of rail transit platforms according to claim 1, characterized in that: The turntable includes a fixing hole, an upper locking hole and a lower locking hole. The upper locking hole and the lower locking hole are symmetrically arranged with the fixing hole as the symmetry center. The turntable is connected to the emergency door frame through the fixing hole, the upper locking plate is connected to the turntable through the upper locking hole, and the lower locking plate is connected to the turntable through the lower locking hole.

5. The push rod lock mechanism for emergency doors of rail transit platforms according to claim 1, characterized in that: It also includes a lower lock body frame, which includes a first directional plate, a second directional plate and a lower side plate. The first directional plate is connected to the second directional plate through the lower side plate, and the lower lock rod passes through the first directional plate and the second directional plate in sequence to be connected to the emergency threshold.

6. The push rod lock mechanism for emergency doors of rail transit platforms according to claim 5, characterized in that: It also includes a first elastic element and a lower baffle plate, wherein the lower baffle plate is sleeved on the lower locking rod, and the first elastic element is arranged between the lower baffle plate and the first directional plate.

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