A flip-type pedal device for rail train

Abstract

The present invention discloses a flip-type pedal device for rail trains, comprising a first-stage pedal, a second-stage pedal, and a driving device, a rocker assembly, and a pedal seat assembly connected in sequence; the driving device drives the rocker assembly to perform linear motion, and the rocker assembly rotates synchronously with the rotating bracket coaxially, driving the first-stage pedal to perform flipping motion, and limiting the position by a limiting device; the second-stage pedal is connected to the pedal connecting rod and the connecting plates on both sides, and the second-stage pedal rotates with the first-stage pedal as the base, and limiting the position by the limiting pins on both sides. The first-stage pedal of the present invention is pushed by a cylinder to achieve flipping and retraction, and the second-stage pedal is pushed manually and by the limiting pins on both sides to achieve flipping and retraction; the second-stage pedal forms a spatial four-bar linkage, which avoids interference after the device is retracted and fully utilizes the space, and the connecting plates on both sides are dispersedly arranged, so that the device has better movement stability and load-bearing rigidity.

Description

Technical Field

[0001] The present invention relates to a rail transit train, and in particular to a flip-type pedal device for a rail transit train. Background Art

[0002] To facilitate passenger boarding and alighting, train entrances are equipped with step systems. Flip-type step systems are a common type of step system. However, these common step systems have the following major drawbacks: Because their drive mechanisms typically utilize linear motion, they can only rotate one level. If a line has a wide variety of platforms, a single-level step system cannot cover all platforms, rendering it inadequate.

[0003] Therefore, it is necessary to develop a secondary pedal that can be flipped twice to make up for the shortcomings of the existing technology. Summary of the Invention

[0004] Purpose of the invention: In view of the shortcomings and defects of the existing technology, the present invention provides a flip-type pedal device for rail trains. The first-level pedal is pushed by a cylinder to achieve flipping and retraction, and the second-level pedal is manually driven and uses limit pins on both sides to achieve flipping and retraction. The second-level pedal forms a spatial four-bar linkage mechanism, which avoids interference after the device is retracted and makes full use of the space. The connecting plates on both sides are dispersedly arranged, so that the device has better movement stability and load-bearing rigidity.

[0005] Technical solution: The present invention is a flip-type pedal device for rail trains, characterized in that it includes a first-level pedal, a second-level pedal, and a driving device, a rocker arm assembly and a pedal seat assembly connected in sequence; the driving device drives the rocker arm assembly to perform linear motion, and the rocker arm assembly rotates coaxially and synchronously with the rotating bracket, driving the first-level pedal to perform flipping motion, and limiting it by a limit device; the second-level pedal is connected to the pedal connecting rod and the connecting plates on both sides, and the second-level pedal rotates with the first-level pedal as the base, and is limited by the limit pins on both sides.

[0006] Among them, the driving device is provided with a pedal switch assembly, and the pedal switch assembly is triggered after the first-level pedal is flipped over, and the door controller of the rail train receives a signal that the pedal has flipped into place.

[0007] Wherein, the rocker arm assembly is connected to the pedal seat assembly and has a preset initial angle.

[0008] Wherein, the first-level pedal and the second-level pedal rotate on the pedal seat assembly, and the pedal seat assembly is fixed on the interface of the rail train body.

[0009] Among them, the first-level pedal is pushed by a cylinder to achieve the turning and retraction action, and the second-level pedal is pushed by manual and limit pins on both sides to achieve the turning and retraction action.

[0010] Among them, the driving device drives the rocker arm assembly to perform linear motion, the rocker arm assembly and the rotating bracket are positioned by end tooth engagement, driving the first-stage pedal to perform flipping motion, and limiting it through the limit device to achieve flipping and retraction of the first-stage pedal.

[0011] Wherein, the connecting plates on both sides are connected to tension springs to position the connecting plates on both sides.

[0012] Among them, the connecting plates on both sides are connected to the tension springs for pre-positioning, providing dead point holding force after the secondary pedal moves into position; the limit pins on both sides are manually operated, and the limit is canceled by rotating 90° while keeping the pulled out state, thereby realizing the flipping of the secondary pedal.

[0013] Among them, the secondary pedal is rotated manually to rotate with the primary pedal as the base. After rotating into place, it is limited on the primary pedal by the limit pins on both sides to realize the retraction of the secondary pedal.

[0014] Beneficial Effects: Compared with existing technologies, this invention offers the following significant advantages: For rail transit trains, the first pedal is pneumatically driven to achieve flipping and retraction, while the second pedal is manually driven and retracted using stop pins on both sides. The second pedal comprises a spatial four-bar linkage, which avoids interference after retraction and fully utilizes space. Furthermore, the dispersed arrangement of the connecting plates on both sides provides improved motion stability and load-bearing rigidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a side structural schematic diagram of the present invention;

[0017] Figure 3 This is a structural diagram of the first-stage pedal of the present invention in a retracted state;

[0018] Figure 4 This is a structural schematic diagram of the first-stage pedal of the present invention in a swung-out state;

[0019] Figure 5 This is a structural diagram of the second-stage pedal of the present invention in the extended state;

[0020] Figure 6 This is a structural diagram of the second-stage pedal of the present invention in a retracted state;

[0021] In the figure, 1 is the driving device; 2 is the pedal seat assembly; 3 is the rocker arm assembly; 4 is the rotating bracket; 5 is the first-level pedal; 6 is the second-level pedal; 7 is the limit device; 8 is the tension spring; 9 is the pedal connecting rod; 10 is the connecting plates on both sides; 11 is the pedal switch assembly; and 12 is the limit pins on both sides. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1 、 2 The flip pedal device for a rail train of the present invention includes a driving device 1, a pedal seat assembly 2, a rocker arm assembly 3, a rotating bracket 4, a first-level pedal 5, a second-level pedal 6, a limit device 7, a tension spring 8, a pedal connecting rod 9, connecting plates on both sides 10, a pedal switch assembly 11 and limit pins 12 on both sides.

[0024] like Figure 3 The drive unit 1 is connected to the rocker arm assembly 3, which is in turn connected to the pedal base assembly 2, with a predetermined initial angle. In the de-energized and airless state, the drive cylinder is retracted, and both the primary and secondary pedals 5 and 6 are retracted. The rotating bracket 4 is connected to the primary pedal 5, and the secondary pedal 6, the pedal connecting rod 9, and the two side connecting plates 10 are all connected, allowing them to rotate on the pedal base assembly 2, which is fixed to the vehicle body interface.

[0025] like Figure 4 The driving device 1 drives the rocker assembly 3 to perform linear motion. The rocker assembly 3 is coaxial with the rotating bracket 4 and can rotate synchronously, driving the first-stage pedal 5 to perform a flipping motion. The first-stage pedal 5 is then limited by the limit device 7 to achieve the flipping and retraction of the first-stage pedal 5. After the first-stage pedal 5 is flipped into place, the pedal switch assembly 11 is triggered, and the door controller receives the pedal flipping position signal.

[0026] like Figure 5 The secondary pedal 6, the pedal connecting rod 9 and the connecting plates 10 on both sides are connected, and rotate with the primary pedal 5 as the base. The pedal seat assembly 2 is fixed to the vehicle body interface. The tension springs 8 on both sides are connected to the connecting plates 10 on both sides and play a pre-positioning role. After the secondary pedal 6 moves into place, it provides dead point holding force. Manually operate the limit pins 12 on both sides and rotate them 90° while keeping them pulled out. The limit can be canceled and the secondary pedal 6 can be manually lowered.

[0027] like Figure 6 , put away the secondary pedal 6, manually rotate the secondary pedal 6 so that it rotates around the primary pedal 5 as a base. After rotating into place, use the limit pins 12 on both sides to limit it on the primary pedal 5. The limit pin operation method is opposite to the above.

[0028] The present invention's reversible pedal device is used in rail transit trains. The first-stage reversible pedal is pneumatically driven, while the second-stage reversible pedal requires manual reversal and retraction, making it a manual-automatic integrated pedal. For the first-stage reversible pedal, a telescopic cylinder is connected to a rocker assembly, which is in turn connected to a rotating bracket, which is in turn connected to the first-stage pedal. The telescopic pedal drives a transmission rod in linear motion, which in turn rotates the rocker assembly, causing the first-stage pedal to revolve and retract. During pedal actuation, the rocker assembly and the rotating bracket mesh with end teeth, ensuring precise positioning. This simplifies the structure, enhances smoother movement, and improves transmission efficiency. After the first-stage pedal is fully rotated, stops are placed at both ends to limit its position. The second-stage reversible pedal utilizes a crank-connecting rod mechanism for transmission. When the vehicle reaches a lower platform station, the stop pins on both sides are released, causing the second-stage pedal to pass through its dead center position under the action of gravity. A tension spring assists in positioning the pedal, and a stop rod provides a stop. The second-stage pedal forms a spatial four-bar linkage, which avoids interference after the device is retracted and fully utilizes space. The dispersed arrangement of the connecting plates on both sides enhances the device's smooth movement and load-bearing rigidity.

[0029] The support units of the present invention are more reasonably distributed. When the first and second pedals are flipped out, the two support frames provide drive and support, while the short support frames distributed on both sides also provide guidance and support. The uniform arrangement of the support frames in the width direction makes the pedals more stable during movement and has better rigidity when bearing loads. At the same time, the foot support frame and the short foot support frame are arranged separately and staggered, breaking the traditional four-bar linkage swing mode and realizing a spatial four-bar linkage, solving the interference problem between the various links, and saving space. The flip-up pedal device of the present invention has the advantages of smooth movement, strong adaptability, and high reliability.

Claims

1. A flip-type pedal device for a rail train, characterized in that: The invention comprises a first-stage pedal (5), a second-stage pedal (6), and a driving device (1), a rocker assembly (3) and a pedal seat assembly (2) connected in sequence; the driving device (1) drives the rocker assembly (3) to perform linear motion, the rocker assembly (3) and the rotating bracket (4) rotate synchronously coaxially, drive the first-stage pedal (5) to perform flipping motion, and limit the position by a limit device (7); the second-stage pedal (6) is connected to the pedal connecting rod (9) and the connecting plates (10) on both sides, the second-stage pedal (6) rotates with the first-stage pedal (5) as a base, and limit the position by limit pins (12) on both sides; the driving device (1) is provided with a pedal switch assembly (11), and the pedal switch assembly (11) is triggered after the first-stage pedal (5) completes flipping, and the door controller of the rail train receives a pedal flipping position signal; the rocker assembly (3) is connected to the pedal seat assembly (2), and an initial angle is preset; The first-stage pedal (5) is pushed by a cylinder to realize the turning and retraction action, and the second-stage pedal (6) is realized by manual operation and the limit pins (12) on both sides to realize the turning and retraction action; the connecting plates (10) on both sides are connected with the tension spring (8) for pre-positioning, and provide a dead point holding force after the second-stage pedal (6) moves into position; the limit pins (12) on both sides are manually operated, and the limit is rotated 90 degrees while being kept in the pulled-out state to cancel the limit, thereby realizing the turning of the second-stage pedal (6); the second-stage pedal (6) is rotated by manual operation so as to use the first-stage pedal (5) as a base, and after being rotated into position, it is limited on the first-stage pedal (5) by the limit pins (12) on both sides, thereby realizing the retraction of the second-stage pedal (6).

2. The flip-type pedal device for a railway train according to claim 1, characterized in that: The first-stage pedal (5) and the second-stage pedal (6) rotate on the pedal seat assembly (2), and the pedal seat assembly (2) is fixed on the rail train body interface.

3. The flip-type pedal device for a railway train according to claim 1, characterized in that: The driving device (1) drives the rocker assembly (3) to perform linear motion, and the rocker assembly (3) and the rotating bracket (4) are positioned by meshing the end teeth, driving the first-stage pedal (5) to perform flipping motion, and the first-stage pedal (5) is limited by the limiting device (7), thereby realizing the flipping and retraction of the first-stage pedal (5).

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