Low temperature resistant folding step device

Abstract

The application discloses a low-temperature-resistant folding pedal device, which comprises a frame assembly, a swing rod, a connecting rod, an upper pedal assembly, a lower pedal assembly, a transmission assembly and an isolation unlocking assembly; the front side of the frame assembly is connected with the upper pedal assembly and the lower pedal assembly through the swing rod and the connecting rod; the inner side of the upper pedal assembly and the lower pedal assembly is provided with the transmission assembly; and the transmission assembly is connected with the isolation unlocking assembly. The low-temperature-resistant folding pedal device has the advantages of low cost, small space occupation and convenient subsequent maintenance, and can improve the sealing property, is provided with a heating mechanism and can improve the reliability and safety of work in a low-temperature environment.

Description

Technical Field

[0001] This invention relates to the field of rail transportation, and more particularly to a low-temperature resistant folding pedal device. Background Technology

[0002] The low-temperature resistant folding pedal device is used in the single-opening sliding door system of intercity trains or high-speed trains. The folding pedal device is arranged below the door system. When the train is running, the pedal automatically retracts to save space; when the train stops, the pedal automatically opens to facilitate passengers getting on and off the train.

[0003] However, the transmission mechanism of existing low-temperature resistant folding pedal devices is relatively complex, resulting in high cost, large space occupation, and difficult maintenance. Furthermore, existing low-temperature resistant folding pedal devices lack a heating mechanism, leading to poor reliability in low-temperature environments and affecting the safe use of the folding pedals.

[0004] Therefore, it is necessary to develop new low-temperature resistant folding pedal devices to overcome the above problems. Summary of the Invention

[0005] Purpose of the invention: To address the shortcomings and defects of existing technologies, this invention provides a low-temperature resistant folding pedal device that is low in cost, occupies little space, and is easy to maintain; it also improves sealing performance, incorporates a heating mechanism, and enhances the reliability and safety of operation in low-temperature environments.

[0006] Technical solution: The present invention provides a low-temperature resistant folding pedal device, characterized in that it includes a frame assembly, a swing arm, a connecting rod, an upper pedal assembly, a lower pedal assembly, a transmission assembly, and an isolation unlocking assembly; the front side of the frame assembly is connected to the upper pedal assembly and the lower pedal assembly through the swing arm and the connecting rod; the inner side of the upper pedal assembly and the lower pedal assembly is provided with a transmission assembly; the transmission assembly is connected to the isolation unlocking assembly.

[0007] The frame assembly includes a left mounting bracket assembly, a right mounting bracket assembly, and a transmission mounting assembly; the left mounting bracket assembly and the right mounting bracket assembly are connected to an external vehicle door system; the transmission mounting assembly fixes the transmission assembly to the left mounting bracket assembly and the right mounting bracket assembly.

[0008] The transmission components include a gearbox assembly, a drive shaft, a rotating plate, a sealing device, a closed position switch assembly, a locked position switch assembly, an electromagnet assembly, a locking device assembly, and an emergency unlocking assembly.

[0009] The gearbox assembly includes a motor and a gearbox; the motor drives the transmission shaft to rotate through the gearbox, the transmission shaft drives the rotating plate to rotate, the rotating plate is connected to the upper pedal assembly to realize the folding action, the upper pedal assembly drives the lower pedal assembly to realize the folding action simultaneously through the swing arm and connecting rod, and the transmission assembly is sealed by a sealing device.

[0010] The sealing device has sealing plates and cold-proof materials installed on all six surfaces, and a pedal pad heating film and a heating pad mounting plate are installed inside the cold-proof material at the rear of the sealing device.

[0011] When the motor drives the transmission shaft to rotate to the position where the folding pedal is closed, the locking device assembly triggers the closed position switch assembly and the locked position switch assembly in sequence, and at the same time the locking device assembly locks, fixing the transmission shaft.

[0012] When the electromagnet assembly receives an open signal, it triggers the locking device assembly to unlock, the drive shaft is released from its fixed position, and the motor drives the drive shaft to rotate to the position where the folding pedal is opened.

[0013] The emergency unlocking component includes an emergency unlocking switch assembly and an emergency unlocking device. The emergency unlocking device can push the locking device assembly to unlock, allowing the drive shaft to rotate freely.

[0014] The isolation unlocking assembly includes an isolation unlocking device, an external operating component, an electronic switch assembly, and an isolation lock turntable. The external operating component and the electronic switch assembly can operate the isolation unlocking device to put it in a locked or isolated unlocked state. When the isolation unlocking device is in the locked state, the isolation lock turntable is fixed, thereby preventing the drive shaft from rotating. When the isolation unlocking device is in the isolated unlocked state, the isolation lock turntable is released, and the drive shaft can rotate.

[0015] The vehicle door system mentioned above is a rail transit vehicle door system.

[0016] Beneficial Effects: Compared with existing technologies, this invention has the following significant advantages: The transmission components of the folding pedal of this invention are compactly arranged internally, integrating drive, isolation unlocking, emergency unlocking, and heating and insulation functions; the structural design of the swing arm and transmission rod enables the two-stage pedals to open and close simultaneously. It saves installation space, adapts to low-temperature working environments, and the connection structure of the two-stage pedals is simple and easy to maintain. This invention is low-cost, occupies little space, and facilitates subsequent maintenance; it also improves sealing performance and enhances reliability and safety in low-temperature environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure in the closed state of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the frame component of the present invention;

[0020] Figure 4 This is a schematic diagram of the transmission assembly of the present invention;

[0021] Figure 5 This is a schematic diagram of the internal structure of the transmission assembly of the present invention;

[0022] Figure 6 This is a schematic diagram of the gearbox assembly of the present invention;

[0023] Figure 7 This is a schematic diagram of the sealing device of the transmission assembly of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of the switching and locking device assembly of the transmission component of the present invention;

[0025] Figure 9 This is a schematic diagram of the isolation unlocking component of the present invention;

[0026] Figure 10 This is a schematic diagram of the emergency unlocking component of the present invention;

[0027] In the diagram, 1 is the frame assembly; 101 is the left mounting bracket assembly; 102 is the right mounting bracket assembly; 103 is the transmission mounting assembly; 2 is the swing arm; 3 is the connecting rod; 4 is the upper pedal assembly; 5 is the lower pedal assembly; 6 is the transmission assembly; 601 is the gearbox assembly; 6011 is the motor; 6012 is the gearbox; 602 is the drive shaft; 603 is the rotating plate; 604 is the sealing device; 6041 is the sealing plate; 6042 is the cold-proof material; 6043 is the pedal pad heating film; 6044 is the heating pad mounting plate; 605 is the closed position switch assembly; 606 is the locked position switch assembly; 607 is the electromagnet assembly; 608 is the locking device assembly; 609 is the emergency unlocking assembly; 6091 is the emergency unlocking switch assembly; 6092 is the emergency unlocking device; 7 is the isolation unlocking assembly; 701 is the isolation unlocking device; 702 is the external operating component; 703 is the electronic switch assembly; and 704 is the isolation lock turntable. Detailed Implementation

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] The low-temperature resistant folding pedal device of the present invention includes a frame assembly 1, a swing rod 2, a connecting rod 3, an upper pedal assembly 4, a lower pedal assembly 5, a transmission assembly 6, and an isolation unlocking assembly 7; the front side of the frame assembly 1 is connected to the upper pedal assembly 4 and the lower pedal assembly 5 through the swing rod 2 and the connecting rod 3; the transmission assembly 6 is provided on the inner side of the upper pedal assembly 4 and the lower pedal assembly 5; the transmission assembly 6 is connected to the isolation unlocking assembly 7.

[0030] The frame assembly 1 of the present invention includes a left mounting bracket assembly 101, a right mounting bracket assembly 102 and a transmission mounting assembly 103; the left mounting bracket assembly 101 and the right mounting bracket assembly 102 are connected to an external vehicle door system; the transmission mounting assembly 103 fixes the transmission assembly 6 to the left mounting bracket assembly 101 and the right mounting bracket assembly 102.

[0031] The transmission assembly 6 of the present invention includes a gearbox assembly 601, a transmission shaft 602, a rotating plate 603, a sealing device 604, a closed-position switch assembly 605, a locked-position switch assembly 606, an electromagnet assembly 607, a locking device assembly 608, and an emergency unlocking assembly 609. The gearbox assembly 601 includes a motor 6011 and a gearbox 6012; the motor 6011 drives the transmission shaft 602 to rotate via the gearbox 6012, and the transmission shaft 602 drives the rotating plate 603 to rotate. The rotating plate 603 is connected to the upper pedal assembly 4 to achieve a folding action. The upper pedal assembly 4 drives the lower pedal assembly 5 to achieve a simultaneous folding action via a swing arm 2 and a connecting rod 3. The transmission assembly 6 is sealed by the sealing device 604, achieving sealing and low-temperature resistance.

[0032] The sealing device 604 of the present invention has sealing plates 6041 and cold-proof materials 6042 installed on each of its six surfaces. A pedal pad heating film 6043 and a heating pad mounting plate 6044 are installed inside the cold-proof material 6042 at the rear of the sealing device 604; this allows the transmission device to maintain a suitable operating temperature in low-temperature environments. When the motor 6011 drives the transmission shaft 602 to the closed position of the folding pedal, the locking device assembly 608 successively triggers the closed position switch assembly 605 and the locked position switch assembly 606, simultaneously locking the transmission shaft 602 and fixing it in place. When the electromagnet assembly 607 receives an open signal, it triggers the locking device assembly 608 to unlock, releasing the transmission shaft 602. The motor 6011 then drives the transmission shaft 602 to the open position of the folding pedal. The emergency unlocking assembly 609 includes an emergency unlocking switch assembly 6091 and an emergency unlocking device 6092. The emergency unlocking device 6092 can push the locking device assembly 608 to unlock, allowing the transmission shaft 602 to rotate freely.

[0033] The isolation unlocking assembly 7 of the present invention includes an isolation unlocking device 701, an external operating component 702, an electronic switch assembly 703, and an isolation lock turntable 704. Both the external operating component 702 and the electronic switch assembly 703 can operate the isolation unlocking device 701 to either lock or unlock it. When the isolation unlocking device 701 is locked, the isolation lock turntable 704 is fixed, preventing the drive shaft 602 from rotating. When the isolation unlocking device 701 is unlocked, the isolation lock turntable 704 is released, allowing the drive shaft 602 to rotate. The vehicle door system is a rail transit vehicle door system.

[0034] The transmission components of this invention's folding pedal are compactly arranged internally, integrating drive, isolation unlocking, emergency unlocking, and heating / insulation functions. The structural design of the swing arm and transmission rod allows for simultaneous opening and closing of both pedal stages. This saves installation space, adapts to low-temperature operating environments, and features a simple connection structure between the two pedal stages for easy maintenance. This invention is low-cost, space-saving, and easy to maintain; it also improves sealing performance and enhances reliability and safety in low-temperature environments.

Claims

1. A low-temperature resistant folding pedal device, characterized in that: The system includes a frame assembly (1), a swing arm (2), a connecting rod (3), an upper pedal assembly (4), a lower pedal assembly (5), a transmission assembly (6), and an isolation unlocking assembly (7); the front side of the frame assembly (1) is connected to the upper pedal assembly (4) and the lower pedal assembly (5) via the swing arm (2) and the connecting rod (3); the inner side of the upper pedal assembly (4) and the lower pedal assembly (5) is provided with a transmission assembly (6); the transmission assembly (6) is connected to the isolation unlocking assembly (7); the frame assembly (1) includes a left mounting base assembly (101), a right mounting base assembly (102), and a transmission mounting assembly (103); the left mounting base assembly (101) and the right mounting base assembly (102) are connected to the external vehicle door system; the transmission mounting assembly (103) fixes the transmission assembly (6) to the left mounting base assembly (101) and the right mounting base assembly (102); the transmission assembly (6) includes a gearbox assembly (601), a drive shaft (602), a rotating plate (603), and a sealing device (601). 604), closed position switch assembly (605), locked position switch assembly (606), electromagnet assembly (607), locking device assembly (608), and emergency unlocking assembly (609); the gearbox assembly (601) includes a motor (6011) and a gearbox (6012); the motor (6011) drives the transmission shaft (602) to rotate through the gearbox (6012), the transmission shaft (602) drives the rotating plate (603) to rotate, and the rotating plate (603) and the upper pedal assembly (609) 4) The connection realizes the folding action. The upper pedal assembly (4) drives the lower pedal assembly (5) to realize the folding action simultaneously through the swing rod (2) and the connecting rod (3). The transmission assembly (6) is sealed by the sealing device (604). The sealing device (604) has a sealing plate (6041) and a cold-proof material (6042) installed on each of the six surfaces. The cold-proof material (6042) at the rear of the sealing device (604) has a pedal pad heating film (6043) and a heating pad mounting plate (6044) installed on the inner side.

2. The low-temperature resistant folding pedal device according to claim 1, characterized in that: When the motor (6011) drives the transmission shaft (602) to rotate to the position where the folding pedal is closed, the locking device assembly (608) triggers the closed position switch assembly (605) and the locked position switch assembly (606) in sequence, and at the same time the locking device assembly (608) locks and fixes the transmission shaft (602).

3. The low-temperature resistant folding pedal device according to claim 2, characterized in that: When the electromagnet assembly (607) receives an open signal, it triggers the locking device assembly (608) to unlock, the drive shaft (602) to be released from fixation, and the motor (6011) drives the drive shaft (602) to rotate to the position where the folding pedal is opened.

4. The low-temperature resistant folding pedal device according to claim 3, characterized in that: The emergency unlocking component (609) includes an emergency unlocking switch component (6091) and an emergency unlocking device (6092). The emergency unlocking device (6092) can push the locking device component (608) to unlock, allowing the drive shaft (602) to rotate freely.

5. The low-temperature resistant folding pedal device according to claim 1, characterized in that: The isolation unlocking assembly (7) includes an isolation unlocking device (701), an external operating component (702), an electronic switch assembly (703), and an isolation lock turntable (704); the external operating component (702) and the electronic switch assembly (703) can operate the isolation unlocking device (701) to put it in a locked or isolated unlocked state; when the isolation unlocking device (701) is in the locked state, the isolation lock turntable (704) is fixed, thereby preventing the drive shaft (602) from rotating; When the isolation unlocking device (701) is in the isolation unlocking state, the isolation lock turntable (704) is released, and the drive shaft (602) can rotate.

6. The low-temperature resistant folding pedal device according to claim 1, characterized in that: The vehicle door system mentioned is a rail transit vehicle door system.

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