Lifting type platform door system

Abstract

The invention belongs to the technical field of platform doors, and particularly relates to a lifting type platform door system which comprises a platform door, a lifting mechanism, a balance mechanism and a lockset mechanism, the platform door comprises a door frame and a door body, the two sides of the door body are in sliding fit with two opposite stand columns of the door frame respectively, and the door body can vertically ascend and descend in the vertical direction of the stand columns; the lifting mechanism is used for providing power and guiding for up-down lifting movement of the door body, the balance mechanism can be matched with the lifting mechanism to achieve the function of stopping at any position in the up-down lifting process of the door body, and up-down lifting movement of the door body can be achieved in a manual mode when the lifting mechanism is powered off. The lockset mechanism comprises a locking assembly and an unlocking assembly, wherein the locking assembly is used for conducting position locking between the door body and the stand column after the door body ascends or descends in place, and the unlocking assembly is used for unlocking position locking and comprises an electric unlocking piece and a manual unlocking piece. The device can adapt to arrangement of large-opening-degree platform doors and platforms where various vehicle types run in a mixed mode, and is safer and more reliable.

Description

Technical Field

[0001] The present invention belongs to the technical field of platform doors, and particularly relates to a lifting platform door system. Background Art

[0002] At present, the opening and closing mode of the sliding doors of the rail transit platform door system is generally the horizontal translation mode. The opening size of the sliding doors of the platform door system is related to the opening size of the train door system and the parking accuracy. When the door spacing of the train doors is small, it often causes interference between adjacent horizontally translated sliding doors and cannot well adapt to the train models. In addition, when there are multiple train models running on the same platform, due to the differences in the door sizes and layouts of the mixed-running train models, the platform doors need a larger sliding door opening to adapt to the situation of multiple train models running together. The conventional horizontally translated sliding door structure can no longer be arranged.

[0003] In order to adapt to trains with small door spacings or the situation of multiple train models running together, most of the existing platform doors adopt the lifting blocking cable scheme, and a blocking cable mechanism that can move up and down is arranged at the train door position. After the train enters the station, the blocking cable rises, and a boarding and alighting passage with a net passing height of about 2 meters is formed below the blocking cable for passengers to board and alight the train; after the train leaves, the blocking cable descends to isolate the passenger waiting area from the track area. However, a blocking barrier with a total height of about 1.5 meters is formed by 3 to 4 blocking cables, and the spacing between single blocking cables is large, making it difficult to effectively achieve the blocking function, unable to prevent passengers from crossing or passing through, and it is not easy to lock after reaching the limit position, with relatively large potential safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the spacing between the platform blocking cables is large, it cannot effectively prevent passengers from crossing or passing through, and it is not easy to lock after reaching the limit position, resulting in potential safety hazards, and to provide a lifting platform door system.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a lifting platform door system, including: A platform door, the platform door includes a door frame and a door body. The two sides of the door body are respectively slidably matched with two opposite columns of the door frame and can move up and down along the vertical direction of the columns to open or close the platform door passage; A lifting mechanism, the lifting mechanism is used to provide power and guidance for the up and down movement of the door body; A balancing mechanism, the balancing mechanism can cooperate with the lifting mechanism to achieve the function of docking the door body at any position during the up and down movement, and can manually move the door body up and down when the lifting mechanism is powered off; Locking mechanism, the locking mechanism includes a locking component for locking the position between the door body and the column after the door body rises or falls in place, and an unlocking component for releasing the above position locking, and the unlocking component includes an electric unlocking member and a manual unlocking member.

[0006] Preferably, the lifting mechanism includes a driving motor disposed in the column, and a lead screw connected to the output end of the driving motor, and a nut slider is disposed on the side of the door body and is connected to the lead screw in a matching manner.

[0007] Preferably, the balance mechanism includes a pulley assembly disposed at the top of the column, and a traction steel wire rope disposed on the pulley assembly, and both ends of the traction steel wire rope are respectively connected to the nut slider and a counterweight assembly, and the counterweight assembly matches the weight of the door body.

[0008] Preferably, the locking component includes a first lock and a second lock respectively disposed on the column and the door body, the first lock includes a lock pin capable of telescopic movement in a direction close to or away from the second lock, and an elastic member disposed at one end of the lock pin away from the second lock, the second lock includes a lock hook corresponding to the lock pin, and inclined guide surfaces for pushing the lock pin to move are respectively disposed on both sides of the lock hook, and a lock hook groove for the lock pin to extend into for limiting is provided.

[0009] Preferably, the electric unlocking member includes a magnetic member connected to the lock pin, and the lock pin can move in a direction away from the lock hook groove under the action of the magnetic member to overcome the acting force of the elastic member, so as to release the position limitation of the lock pin on the lock hook.

[0010] Preferably, the manual unlocking member includes an unlocking rod connected to the lock pin, and a ejector rod disposed on one side of the lock hook and corresponding to the unlocking rod, the ejector rod can be ejected or retracted in a direction close to or away from the unlocking rod under the action of a shift lever, and the unlocking rod can drive the lock pin to move in a direction away from the lock hook groove under the ejecting action of the ejector rod to overcome the acting force of the elastic member, so as to release the position limitation of the lock pin on the lock hook.

[0011] Preferably, the shift lever is connected to a manual unlocking handle on the door body through an unlocking cable.

[0012] Preferably, two second locks are provided, and are symmetrically disposed at the upper and lower ends on one side of the door body respectively, and two first locks are provided, and respectively correspond to the two second locks, and are disposed at the upper and lower ends of the column corresponding to one side of the door body.

[0013] After adopting the above technical solutions, a lifting platform door system provided by the present invention has the following beneficial effects: 1) The present invention can adapt to the layout of platform doors with large opening degrees and platforms with multiple types of trains running mixed, and is safer and more reliable than the cable-blocking type lifting platform doors; 2) Through the design of the balance mechanism, the present invention can not only cooperate with the self-locking structure of the driving motor to achieve the function of docking the door body at any position during the lifting process, but also reduce the power consumption of the driving motor. Moreover, it can easily lift and lower the door body manually in the event of a power failure in the system, facilitating escape in case of an emergency; 3) Through the design of the locking mechanism, the present invention can perform the position locking function after the door body rises or falls in place, making the opening and closing of the platform door passage safer and more reliable. At the same time, with the help of the locking function, the load on the lead screw can be reduced, and the usage cost of the platform door can be lowered; 4) Through the design of the electric unlocking member and the manual unlocking member, the present invention can not only ensure the automation operation efficiency of the locking mechanism during normal use, but also achieve the unlocking function manually in case of an emergency such as a power failure in the system, further improving safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the door body in the lowered state of the present invention; Figure 2 It is a schematic diagram of the door body in the raised state of the present invention; Figure 3 It is a schematic diagram of the structure on one side of the door body of the present invention; Figure 4 It is a schematic diagram of the structure on the other side of the door body of the present invention; Figure 5 It is a schematic diagram of the structure on one side of the column of the present invention; Figure 6 It is a schematic diagram of the structure on the other side of the column of the present invention; Figure 7 It is a schematic diagram of the structure of the locking mechanism of the present invention; Figure 8 It is a cross-sectional view of the structure of the locking mechanism of the present invention.

[0015] Wherein: column 1, column frame 1-1, driving motor 1-2, transmission belt 1-3, lead screw 1-4, traction steel wire rope 1-5, pulley assembly 1-6, counterweight assembly 1-7, first lower locking member 1-8, locking pin 1-8-1, unlocking rod 1-8-2, elastic member 1-8-3, first upper locking member 1-9, door body 2, door body frame 2-1, panel 2-2, connecting bracket 2-3, nut slider 2-4, second lower locking member 2-5, locking hook 2-5-1, ejector rod 2-5-2, lever 2-5-3, unlocking cable 2-5-4, second upper locking member 2-6, manual unlocking handle 2-7, connecting beam 3. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present invention will be further clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention or its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0018] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the scope of protection of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0020] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure for the device. For example, if the device in the attached drawing is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0021] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0022] As Figure 1-8 shown, a lifting platform door system provided by the present invention includes a platform door, a lifting mechanism, a balancing mechanism and a locking mechanism. The platform door includes a door frame and a door body 2. The door frame includes two oppositely arranged columns 1, and a connecting beam 3 connected to the tops of the two columns 1. The left and right sides of the door body 2 are respectively slidably fitted in the sliding grooves on the sides of the two columns 1, and can move up and down along the vertical direction of the columns 1 to open or close the platform door passage, forming a passage or a barrier for getting on and off the vehicle.

[0023] Specifically, the column 1 includes a column frame 1-1. The door body 2 is bonded into one body by a door body frame 2-1 and a panel 2-2. The lifting mechanism is installed inside the column frame 1-1 and is used to provide power and guidance for the up and down movement of the door body 2. It includes a driving motor 1-2 installed at the lower part of the column frame 1-1, and a lead screw 1-4 connected to the output end of the driving motor 1-2 through a transmission belt 1-3. Connecting brackets 2-3 are connected to the left and right sides of the door body frame 2-1 through fasteners, and nut sliders 2-4 cooperating with the lead screw 1-4 are installed on the connecting brackets 2-3. In use, the driving motor 1-2 drives the lead screw 1-4 through the transmission belt 1-3, and the lead screw 1-4 drives the nut sliders 2-4 to move up and down, thereby enabling the door body 2 to move up and down.

[0024] The balance mechanism includes a pulley assembly 1-6 provided at the top of the column frame 1-1, and a traction steel wire rope 1-5 provided on the pulley assembly 1-6. The two ends of the traction steel wire rope 1-5 are respectively located on both sides of the pulley assembly 1-6, and the two ends of the traction steel wire rope 1-5 are respectively connected to the nut slider 2-4 and the counterweight assembly 1-7. The purpose is to make the weight of the counterweight assembly 1-7 match the weight of the door body 2. With such a design, during the up and down movement of the door body 2, it can cooperate with the self-locking function of the driving motor 1-2 to achieve the function of the door body 2 stopping at any position, and can reduce the driving power of the driving motor 1-2. Further, it can also easily lift and lower the lifting and sliding door manually in the state of power failure of the system, which is convenient for escape in case of emergency.

[0025] The locking mechanism includes a locking assembly for locking the position between the door body 2 and the column 1 after the door body 2 rises or falls in place. The locking assembly includes a first locking member and a second locking member respectively provided on one of the columns 1 and on one side of the corresponding door body 2. There are two first locking members and two second locking members symmetrically arranged respectively. They are the first upper locking member 1-9 and the first lower locking member 1-8 provided at the upper and lower ends of the column frame 1-1, and the second upper locking member 2-6 and the second lower locking member 2-5 provided at the upper and lower ends of one side of the door frame 2-1 respectively. When the door body 2 completely falls, the limit locking between the first lower locking member 1-8 and the second lower locking member 2-5 can be carried out to achieve the falling locking of the door body 2 (closing the upper and lower vehicle passages). When the door body 2 completely rises, the limit locking between the first upper locking member 1-9 and the second upper locking member 2-6 can be carried out to achieve the rising locking of the door body 2 (opening the upper and lower vehicle passages).

[0026] Specifically, the first lower locking member 1-8 includes a locking pin 1-8-1 that can move telescopically in the direction of approaching or departing from the second lower locking member 2-5, and an elastic member 1-8-3 provided at one end of the locking pin 1-8-1 away from the second lower locking member 2-5. The second lower locking member 2-5 includes a locking hook 2-5-1 corresponding to the locking pin 1-8-1. The locking hook 2-5-1 is designed in a hook-like structure. On both sides of the locking hook 2-5-1, there are respectively provided inclined guide surfaces for pushing the locking pin 1-8-1 to move, and a locking hook groove for the locking pin 1-8-1 to extend into for limiting. When the door body 2 descends, the second lower locking member 2-5 also descends. The inclined guide surface of the locking hook 2-5-1 first contacts the locking pin 1-8-1, and can push the locking pin 1-8-1 to retract backward along the direction of the inclined guide surface against the acting force of the elastic member 1-8-3 during the continuous descent until it slides past the inclined guide surface. Then, the locking pin 1-8-1 rebounds forward under the action of the elastic member 1-8-3 and extends into the locking hook groove to complete the locking. It should be noted that the structure of the first upper locking member 1-9 is the same as that of the first lower locking member 1-8, and the structure of the second upper locking member 2-6 is the same as that of the second lower locking member 2-5, and they are symmetrically arranged up and down. Therefore, it will not be elaborated here.

[0027] The lock mechanism further includes an unlocking component that is correspondingly arranged with the above-mentioned locking component and is used to release the position locking of the above-mentioned locking component. The unlocking component includes an electric unlocking member and a manual unlocking member. Similarly, since the upper and lower unlocking components have the same structure, in order to reduce unnecessary repetition, only the unlocking component between the first lower lock 1-8 and the second lower lock 2-5 will be taken as an example in the following to describe the specific structure. The electric unlocking member includes a magnetic member connected to the lock pin 1-8-1. The lock pin 1-8-1 can move away from the lock hook groove under the action of the magnetic member against the acting force of the elastic member 1-8-3, so as to release the position limitation of the lock pin 1-8-1 on the lock hook 2-5-1, and thus the unlocking can be completed. The manual unlocking member includes an unlocking rod 1-8-2 connected to the lock pin 1-8-1, and a ejector rod 2-5-2 arranged on one side of the lock hook 2-5-1 and corresponding to the unlocking rod 1-8-2. The ejector rod 2-5-2 can be ejected or retracted in the direction close to or away from the unlocking rod 1-8-2 under the action of the shift lever 2-5-3. Specifically, the shift lever 2-5-3 is connected to the manual unlocking handle 2-7 on the door body 2 through the unlocking cable 2-5-4. By tightening the unlocking cable 2-5-4 with the manual unlocking handle 2-7, the shift lever 2-5-3 can be pressed down, and then the ejector rod 2-5-2 can be ejected. Thus, the unlocking rod 1-8-2 can drive the lock pin 1-8-1 to move away from the lock hook groove against the acting force of the elastic member 1-8-3 under the ejecting action of the ejector rod 2-5-2, so as to release the position limitation of the lock pin 1-8-1 on the lock hook 2-5-1, and the manual unlocking can be completed.

[0028] When the lifting platform door system of the present invention is in use, a continuous barrier separating the platform area and the track area is formed by the columns 1, the door body 2, and the connecting beam 3 at the platform edge. When waiting for the train to enter the station, all the door bodies 2 are in the lowered state and are locked by the first lower lock 1-8 to prevent passengers from entering the track area; when the train enters the station and stops in place, the door opening signal is transmitted to the platform door system. The platform door system controls the first lower lock 1-8 to unlock, and at the same time drives the motor 1-2 to act. Through the transmission belt 1-3, the lead screw 1-4, and the nut slider 2-4, the door body 2 is lifted. After lifting in place, it is locked by the first upper lock 1-9, and passengers can get on and off the train; after the passengers get on and off the train, the platform door system controls the first upper lock 1-9 to unlock, and then the motor 1-2 acts. Through the transmission belt 1-3, the lead screw 1-4, and the nut slider 2-4, the door body 2 is lowered. After lowering in place, it is locked by the first lower lock 1-8, and the signal of closing and locking the platform door is sent to the train system. After receiving the signal, the train system departs from the platform.

[0029] In the event of an emergency such as a power outage of the system, if the door body 2 is in the lowered and locked state, passengers on the track side can unlock the first lower locking member 1-8 by acting on the second lower locking member 2-5 with the manual unlocking handle 2-7 at the bottom of the door body frame 2-1, then manually lift the door body 2 and lock it with the first upper locking member 1-9. Passengers can evacuate or escape through the passage at the lower part of the door body 2.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. An elevating platform screen door system, characterized in that, Comprising: Platform screen doors, the platform screen doors including a door frame and a door body, both sides of the door body being slidably engaged with two opposite columns of the door frame respectively and being capable of moving up and down along the vertical direction of the columns to open or close the platform screen door passage; A lifting mechanism, the lifting mechanism being used to provide power and guidance for the up and down movement of the door body; A balance mechanism, the balance mechanism being capable of cooperating with the lifting mechanism to achieve the function of docking at any position during the up and down movement of the door body, and being capable of realizing the up and down movement of the door body manually when the lifting mechanism loses power; A locking mechanism, the locking mechanism including a locking assembly for locking the position between the door body and the column after the door body rises or falls in place, and an unlocking assembly for releasing the above-mentioned position locking, the unlocking assembly including an electric unlocking member and a manual unlocking member.

2. The lift platform door system according to claim 1, characterized in that: The lifting mechanism includes a driving motor arranged in the column, and a lead screw connected to the output end of the driving motor, and a nut slider for cooperating with the lead screw is arranged on the side of the door body.

3. The lift platform door system according to claim 2, characterized in that: The balance mechanism includes a pulley assembly arranged at the top of the column, and a traction steel wire rope arranged on the pulley assembly, both ends of the traction steel wire rope being connected to the nut slider and a counterweight assembly respectively, and the counterweight assembly matching the weight of the door body.

4. The lift platform door system according to claim 1, wherein: The locking assembly includes a first locking member and a second locking member respectively arranged on the column and the door body, the first locking member including a locking pin capable of moving telescopically in a direction close to or away from the second locking member, and an elastic member arranged at the end of the locking pin away from the second locking member, the second locking member including a locking hook arranged corresponding to the locking pin, inclined guide surfaces for pushing the locking pin to move are respectively arranged on both sides of the locking hook, and a locking hook groove for the locking pin to extend into for limiting is arranged.

5. The lift platform door system according to claim 4, wherein: The electric unlocking member includes a magnetic member connected to the locking pin, and the locking pin can move in a direction away from the locking hook groove against the acting force of the elastic member under the action of the magnetic member to release the position limitation of the locking pin on the locking hook.

6. The lift platform door system according to claim 4, characterized in that: The manual unlocking member includes an unlocking rod connected to the locking pin, and a ejector rod arranged on one side of the locking hook corresponding to the unlocking rod, the ejector rod can be ejected or retracted in a direction close to or away from the unlocking rod under the action of a shift lever, and the unlocking rod can drive the locking pin to move in a direction away from the locking hook groove against the acting force of the elastic member under the ejecting action of the ejector rod to release the position limitation of the locking pin on the locking hook.

7. The lift platform door system according to claim 6, characterized in that: The shift lever is connected to a manual unlocking handle on the door body through an unlocking cable.

8. The lift platform door system according to claim 4, wherein: Two second locking members are provided, which are symmetrically arranged at the upper and lower ends of one side of the door body respectively, and two first locking members are provided, which correspond to the two second locking members respectively and are arranged at the upper and lower ends of the column corresponding to one side of the door body.

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