Power-off emergency device for platform protective door

Abstract

According to the power-off emergency device for the platform protection door, the platform protection door comprises a guide rail, a rope guardrail, a sliding block assembly and a driving system, the sliding block assembly is driven by the driving system to move up and down along the guide rail, and the rope guardrail is connected with the sliding block assembly and moves along with the sliding block assembly; the driving system comprises a motor and a synchronous belt transmission assembly, the synchronous belt transmission assembly comprises a main shaft and a synchronous belt, and the synchronous belt is connected with the sliding block assembly through a first fixing piece; the power-off emergency device comprises an electromagnetic clutch and a lifting system; the electromagnetic clutch is connected between the motor and the main shaft; the lifting system comprises a traction mechanism and a counterweight; the traction mechanism comprises a guide wheel, a steel wire rope and a second fixing piece; one end of the steel wire rope is connected with the second fixing piece, the other end of the steel wire rope bypasses the guide wheel to be connected with the balance weight, and the second fixing piece is fixedly connected to the first fixing piece. During power failure, the sliding block assembly is pulled to move upwards through the gravity of the balance weight, so that the rope guardrail is driven to be opened, normal getting-on and getting-off of passengers are not affected, and normal operation of the system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicle platform safety protection, in particular to a power-off emergency device for a platform protection door. Background Art

[0002] A platform lift door is a protective door system installed at the edge of a train platform. Its main function is to provide safe isolation for passengers while the train is stopped at the platform, preventing passengers from accidentally falling onto the tracks or being hit by the train. It can also effectively prevent objects from falling from the platform onto the track area.

[0003] Existing platform lift gate systems are typically equipped with a power failure emergency device to ensure that the system can continue to operate normally or at least ensure the safety of passengers in the event of an emergency such as a power outage. There are two common power failure emergency devices: one equipped with an uninterruptible power supply (UPS) or backup generator, and the other with a manual release mechanism. In the event of a power outage, staff can use this mechanism to manually raise or lower the protective door, ensuring the safe boarding and alighting of passengers.

[0004] However, both of the above emergency methods have defects: 1) The installation and maintenance costs of the backup power supply system are relatively high, and regular maintenance and inspection are usually required to ensure that it can be used normally in an emergency; 2) The manual release mechanism first requires the operator to have certain technical knowledge and skills, but there is still a risk of human error, which may cause equipment damage or further system failure. In addition, it cannot respond as quickly as the automatic system in an emergency, and manpower and time are still required to ensure the normal operation and maintenance of the system. Utility Model Content

[0005] In view of the problems and shortcomings in the prior art, the utility model provides a power-off emergency device for platform protective doors.

[0006] The technical solution of this utility model is as follows:

[0007] A power failure emergency device for a platform protection door, the platform protection door comprising a guide rail, a rope guardrail, a slider assembly, and a drive system. The slider assembly is driven by the drive system to move up and down along the guide rail, and the rope guardrail is connected to the slider assembly and moves therewith. The drive system comprises a motor and a synchronous belt drive assembly. The synchronous belt drive assembly comprises a main shaft connected to the motor and a synchronous belt for driving the slider assembly to move. The synchronous belt is connected to the slider assembly via a first fixing member.

[0008] The power failure emergency device includes an electromagnetic clutch and a lifting system;

[0009] The electromagnetic clutch is connected between the motor and the spindle and is used to disconnect the motor and the spindle when the power is off;

[0010] The lifting system is used to drive the slider assembly to rise when power is off, and includes: a traction mechanism and a counterweight;

[0011] The traction mechanism includes a guide wheel, a steel wire rope and a second fixing part; the guide wheel is rotatably connected to the top of the guide rail, one end of the steel wire rope is connected to the second fixing part, and the other end passes around the guide wheel to connect the counterweight, and the second fixing part is fixedly connected to the first fixing part.

[0012] An electromagnetic clutch is set in the drive system. When the power is off, the main shaft of the synchronous belt drive assembly is disconnected from the motor, and the synchronous belt in the synchronous belt drive assembly can move up and down freely without being affected by the resistance of the motor; a lifting system is set and connected to the slider assembly. The lifting system includes a traction mechanism that moves up and down along the height direction of the guide rail. The traction mechanism includes a guide wheel and a wire rope, wherein the guide wheel adopts a fixed pulley, and the lower end of the wire rope is connected to the slider assembly through a second fixing part. After the upper end passes around the guide wheel, the end is connected to the counterweight. When the power is off, the counterweight moves downward under the action of gravity, and the end of the traction wire rope moves downward, so that the end of the wire rope connected to the slider assembly moves upward, thereby driving the slider assembly to move upward, thereby driving the rope guardrail to automatically move upward and open, making it convenient for passengers to get on and off the vehicle.

[0013] In a specific embodiment, the guide wheel is arranged at the top of the guide rail facing the rope guardrail, and the axis thereof extends perpendicular to the guide rail toward the rope guardrail.

[0014] The lifting system also includes a guide mechanism, which is arranged below the guide wheel and connected to the counterweight to control the direction of movement of the counterweight. The guide mechanism includes a guide rod and a slide. The guide rod is vertically spaced inside the guide rail and is located between the guide wheel and the motor. Specifically, the upper end of the guide rod is connected to the guide rail via an upper connecting plate, and the lower end is connected to the base via a lower connecting plate. Two guide rods are arranged in parallel and spaced apart. The slide slides up and down with the guide rod, and the counterweight is fixedly connected to it. Specifically, the slide slides with the guide rod via a linear bearing.

[0015] In order to control the guide mechanism to stop smoothly when it moves downward to the lowest end, a buffer is provided on the bottom surface of the slide.

[0016] In order to facilitate the adjustment and control of the weight of the counterweight, the counterweight includes a plurality of counterweight blocks stacked up and down and fixed to the top surface of the slide by bolts.

[0017] The setting of the guide mechanism can increase the stability of the counterweight and ensure that the counterweight pulls the wire rope in the vertical downward direction, thereby ensuring that the slider assembly moves upward along the guide rail and reducing the movement resistance caused by the instability of the counterweight.

[0018] The beneficial effects of the utility model are:

[0019] 1) An electromagnetic clutch is added to the drive system to disconnect the main shaft of the synchronous belt drive assembly from the motor. A lifting system connected to the slider assembly is also provided. The lifting system includes a traction mechanism that moves up and down along the height of the guide rail. A counterweight is attached to the end of the traction mechanism. The weight of the counterweight pulls the slider assembly upward, thereby driving the rope guardrail to automatically move upward and open. Therefore, in the event of a power outage and the absence of a backup power source, the platform protection door can respond quickly and automatically rise without manual operation, without affecting passengers' normal boarding and disembarking, ensuring the normal operation of the system.

[0020] 2) The device has a simple structure, low manufacturing and installation costs, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of an embodiment;

[0022] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0023] Figure 3 for Figure 2 Structural diagram from another perspective;

[0024] Figure 4 for Figure 1 A partial enlarged view of point B in the middle;

[0025] 1. Guide rail; 11. Base; 2. Rope guardrail; 3. Slider assembly; 4. Drive system; 41. Motor; 42. Synchronous belt drive assembly; 43. Electromagnetic clutch; 421. Synchronous belt; 422. First fixing member; 423. Main shaft; 5. Traction mechanism; 51. Guide wheel; 52. Wire rope; 53. Second fixing member; 6. Counterweight; 7. Guide mechanism; 71. Guide rod; 72. Slide; 73. Buffer; 74. Upper connecting plate; 75. Lower connecting plate. DETAILED DESCRIPTION

[0026] The core of this utility model is to provide a power failure emergency device for platform protection doors. Through this device, the platform protection doors can respond quickly and open automatically in the event of a power failure to ensure the normal operation and maintenance of the system. In addition, the manufacturing, installation and maintenance costs are lower than those of uninterruptible power supplies or backup motors.

[0027] To this end, the technical concept of the present invention is to add an electromagnetic clutch in the drive, and add a guide mechanism and counterweight in the actuator. After the determination, the electromagnetic clutch fails, the actuator is disconnected from the motor, and at the same time the counterweight falls freely along the predetermined trajectory of the guide mechanism under the action of gravity, and drives the actuator to move, thereby driving the protective door to rise, realizing the function of the protective door automatically rising when the power is off.

[0028] The following will further illustrate the technical means adopted to achieve the predetermined inventive purpose of the present invention in conjunction with the drawings in the embodiments of the present invention.

[0029] See also Figure 1 As shown, a power failure emergency device for a platform protection door includes a guide rail 1, a rope guardrail 2, a slider assembly 3, and a drive system 4. The slider assembly 3 moves up and down along the guide rail 1 by being driven by the drive system 4. The rope guardrail 2 is connected to the slider assembly 3 and moves therewith. The drive system 4 includes a motor 41 and a synchronous belt drive assembly 42. The synchronous belt drive assembly 42 includes a main shaft 423 connected to the motor 41 and a synchronous belt 421 that drives the slider assembly 3 to move. The synchronous belt 421 is connected to the slider assembly 3 via a first fixing member 422.

[0030] The power failure emergency device includes an electromagnetic clutch 43 and a lifting system;

[0031] See also Figure 1 、 Figure 2 and Figure 3 As shown, the electromagnetic clutch 43 is connected between the motor 41 and the main shaft 423, and is used to disconnect the motor 41 from the main shaft 423 when the power is off;

[0032] See also Figure 1 and Figure 4 As shown, the lifting system is used to drive the slider assembly 3 to rise when the power is turned off, and includes: a traction mechanism 5 and a counterweight 6;

[0033] The traction mechanism 5 includes a guide wheel 51, a wire rope 52 and a second fixing member 53; the guide wheel 51 is rotatably connected to the top of the guide rail 1, one end of the wire rope 52 is connected to the second fixing member 53, and the other end passes around the guide wheel 51 to connect to the counterweight 6, and the second fixing member 53 is fixedly connected to the first fixing member 422. The fixed connection position is shown in FIG. Figure 3 shown.

[0034] In a specific implementation, the first fixing member 422 is a fixing plate that can clamp the synchronous belt, and the second fixing member 53 is a fixing block, and the second fixing member 53 is fixedly connected to one end of the first fixing member 422. Figure 3 , and then the second fixing member 53 is fixedly connected to one end of the wire rope 52.

[0035] By setting an electromagnetic clutch 43 in the drive system 4, when the power is off, the main shaft 423 of the synchronous belt transmission assembly 42 is disconnected from the motor 41, and the synchronous belt 421 in the synchronous belt transmission assembly 42 can move up and down freely without being affected by the resistance of the motor 41; a lifting system is set and connected to the slider assembly 3. The lifting system includes a traction mechanism 5 that moves up and down along the height direction of the guide rail 1. The traction mechanism 5 includes a guide wheel 51 and a wire rope 52, wherein the guide wheel 51 adopts a fixed pulley, and the lower end of the wire rope 52 is connected to the slider assembly 3 through a second fixing member 53. The upper end passes around the guide wheel 51 and the end is connected to the counterweight 6. When the power is off, the counterweight 6 moves downward under the action of gravity, and the end of the traction wire rope 52 moves downward, so that the end of the wire rope 52 connected to the slider assembly 3 moves upward, thereby driving the slider assembly 3 to move upward, thereby driving the rope guardrail 2 to automatically move upward and open, making it convenient for passengers to get on and off the vehicle.

[0036] See also Figure 1 and Figure 4 As shown, in a specific embodiment, the guide wheel 51 is arranged on the top of the guide rail 1 facing the rope guardrail 2, and its axis extends perpendicular to the guide rail 1 toward the rope guardrail 2.

[0037] See also Figure 4 As shown, the lifting system also includes a guide mechanism 7, which is arranged below the guide wheel 51 and connected to the counterweight 6, and is used to control the moving direction of the counterweight 6. The guide mechanism 7 includes a guide rod 71 and a slide 72. The guide rod 71 is vertically spaced apart on the inner side of the guide rail 1 and is located between the guide wheel 51 and the motor 41. Specifically, the upper end of the guide rod 71 is connected to the guide rail 1 through an upper connecting plate 74, and the lower end is connected to the base 11 through a lower connecting plate 75. Two guide rods 71 ​​are provided at parallel intervals. The slide 72 slides up and down with the guide rod 71, and the counterweight 6 is fixedly connected thereto. Specifically, the slide 72 slides with the guide rod 71 through a linear bearing.

[0038] In order to control the guide mechanism 7 to stop smoothly when it moves downward to the lowest end, a buffer 73 is provided on the bottom surface of the slide 72.

[0039] In order to facilitate adjustment and control of the weight of the counterweight 6 , the counterweight 6 includes a plurality of counterweights 6 stacked up and down, which are fixed to the top surface of the slide 72 by bolts.

[0040] The setting of the guide mechanism 7 can increase the stability of the counterweight 6 and ensure that the counterweight 6 pulls the wire rope 52 in the vertical downward direction, thereby ensuring that the slider assembly 3 moves upward along the guide rail 1 and reducing the movement resistance caused by the instability of the counterweight 6.

[0041] The above is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments and examples. Various changes, equivalent substitutions, improvements, etc. made within the scope of knowledge possessed by those skilled in the art without departing from the concept of the present invention should be included in the scope of protection of the present invention.

Claims

1. A power failure emergency device for a platform protection door, the platform protection door comprising a guide rail (1), a rope guardrail (2), a slider assembly (3) and a drive system (4), the slider assembly (3) being driven by the drive system (4) to move up and down along the guide rail (1), the rope guardrail (2) being connected to the slider assembly (3) and moving with the slider assembly ； The driving system (4) comprises a motor (41) and a synchronous belt transmission assembly (42), wherein the synchronous belt transmission assembly (42) comprises a main shaft (423) connected to the motor (41) and a synchronous belt (421) for driving the slider assembly (3) to move, wherein the synchronous belt (421) is connected to the slider assembly (3) via a first fixing member (422); Characterized in that the power failure emergency device comprises an electromagnetic clutch (43) and a lifting system; The electromagnetic clutch (43) is connected between the motor (41) and the main shaft (423) and is used to disconnect the motor (41) from the main shaft (423) when power is off; The lifting system is used for driving the slider assembly (3) to rise when power is cut off, and comprises: a traction mechanism (5) and a counterweight (6); the traction mechanism (5) comprises a guide wheel (51), a steel wire rope (52) and a second fixing member (53); the guide wheel (51) is rotatably connected to the top of the guide rail (1), one end of the steel wire rope (52) is connected to the second fixing member (53), and the other end passes around the guide wheel (51) to connect to the counterweight (6), and the second fixing member (53) is fixedly connected to the first fixing member (422).

2. The power failure emergency device according to claim 1, It is characterized in that The guide wheel (51) is arranged at the top of the guide rail (1) on the side facing the rope guardrail (2), and its axis is perpendicular to the guide rail (1) and extends toward the side of the rope guardrail (2).

3. The power failure emergency device according to claim 1 or 2, It is characterized in that The lifting system further comprises a guide mechanism (7) which is arranged below the guide wheel (51) and connected to the counterweight (6) and is used to control the moving direction of the counterweight (6).

4. The power failure emergency device according to claim 3, It is characterized in that The guiding mechanism (7) comprises: A guide rod (71) is vertically spaced and arranged inside the guide rail (1) and between the guide wheel (51) and the motor (41); The slide table (72) is slidably matched with the guide rod (71) up and down, and the counterweight (6) is fixedly connected thereto.

5. The power failure emergency device according to claim 4, It is characterized in that The slide table (72) is slidably matched with the guide rod (71) via a linear bearing.

6. The power failure emergency device according to claim 4, It is characterized in that A buffer (73) is provided on the bottom surface of the slide (72).

7. The power failure emergency device according to claim 4, It is characterized in that The upper end of the guide rod (71) is connected to the guide rail (1) via an upper connecting plate (74), and the lower end is connected to the base via a lower connecting plate (75).

8. The power failure emergency device according to claim 7, It is characterized in that Two guide rods (71) are arranged in parallel and at intervals.

9. The power failure emergency device according to any one of claims 4 to 8, It is characterized in that The counterweight (6) comprises a plurality of counterweight (6) blocks stacked up and down and fixed to the top surface of the slide table (72) by bolts.

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