Platform compensator

Abstract

The application discloses a platform compensator, which comprises a U-shaped frame, a movable pedal slidably connected with the frame, and a locking mechanism, wherein the locking mechanism locks the movable pedal after the movable pedal is recovered; the longitudinal section of the rear support of the frame is C-shaped; the locking mechanism comprises a locking hook and a mounting rack; the tail of the mounting rack is inserted into the rear support and connected with the top plate and the bottom plate of the rear support; a mounting cavity is formed in the mounting rack, and the locking hook is mounted through the mounting cavity. In the application, the frame structure for mounting the pedal is changed into a C-shaped sheet metal part, the locking mechanism is inserted and mounted in the frame as a plug-in part, the mounting strength of the frame is ensured, meanwhile, the locking mechanism forms a cantilever structure, the upper and lower surface cover plates of the frame are exempted from the function of supporting parts, after the upper and lower cover plates are removed, an inspection window is formed, and maintenance is facilitated.

Description

Technical Field

[0001] The invention relates to a rail transit pedal, in particular to a platform compensator. Background Art

[0002] After a railway train arrives at a station and stops at the platform, if the platform is a low platform, in order to compensate for the height difference between the vehicle and the platform, a platform compensator needs to be installed under the door of the train door area. When passengers get on and off the train, they can get on and off the train by stepping on the platform compensator pedal. During the operation of the vehicle, the platform compensator pedal needs to be retracted and kept flush with the outer surface of the vehicle body, and locked stably to avoid affecting the vehicle's movement.

[0003] To achieve the above functions, the platform compensator needs to have a sliding / rotating mechanism, a drive mechanism, and a pedal locking mechanism. Depending on the installation location of the platform compensator, the platform compensator can be installed in two situations: inside the vehicle and under the vehicle. When installed on the vehicle, the installation does not need to consider the vehicle's operating environment. For example, the telescopic pedal device disclosed in the invention patent application with publication number CN 112265556 A has a telescopic pedal embedded in the vehicle, with the pedal drive mechanism located on both sides of the frame. The lower cover provides support for the locking mechanism, and the upper cover serves as a maintenance window to facilitate pedal maintenance. When installed under the vehicle, the platform compensator must not only consider post-maintenance, but also consider the installation strength and have good waterproof performance. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a platform compensator that takes into account both maintenance function and installation strength.

[0005] Technical solution: The platform compensator described in the present invention includes a U-shaped frame, a movable pedal slidably connected to the frame, and a locking mechanism. After the movable pedal is retracted, the locking mechanism locks the movable pedal. The longitudinal section of the rear bracket of the frame is C-shaped, and the locking mechanism includes a locking hook and a mounting bracket; the tail of the mounting bracket is inserted into the rear bracket and connected to the top plate and bottom plate of the rear bracket. A mounting cavity is formed inside the mounting bracket, and the locking hook is installed through the mounting cavity.

[0006] Preferably, the installation cavity is divided into two installation cavities, namely a head installation cavity and a tail installation cavity. Compared with the tail installation cavity, the top height of the head installation cavity is lowered and the bottom is raised.

[0007] Preferably, the side wall of the tail installation cavity close to the rear bracket is bent toward the inside of the installation cavity, and the bottom plate of the rear bracket is provided with an extension plate for supporting the tail installation cavity.

[0008] Preferably, a gasket is provided between the bottom of the tail mounting cavity and the rear side bracket.

[0009] Preferably, the top and bottom surfaces of the frame are provided with a detachable upper cover and lower cover, the lower cover includes a cover frame and a partially sunken bottom panel, the lowest point of the sunken bottom panel is provided with a drainage hole, and a bridge-type dust cover is provided on the drainage hole.

[0010] Preferably, in order to improve the strength of the frame, improve the sealing performance, and ensure stable installation of the lower cover, reinforcing plates are provided at the front end and middle of the bottom of the frame, and sealing strips and cavities for installing the sealing strips are designed around the cover frame.

[0011] Preferably, in order to facilitate the installation of the unlocking mechanism, the locking mechanism includes a lock hook, a stopper, and an unlocking mechanism. The lock hook, the stopper and the head mounting cavity are rotatably connected. A first torsion spring is connected to the rotating shaft of the lock hook, and a groove is provided on the outer contour of the lock hook. A second torsion spring is provided on the rotating shaft of the stopper. When in a relaxed state, the second torsion spring is squeezed and deformed by the lock hook. When locked, the stopper is driven by the second torsion spring to rotate along the second direction and insert into the groove of the outer contour of the lock hook; the unlocking mechanism is located in the tail mounting cavity. When unlocking, the unlocking mechanism drives the stopper to rotate, releasing the lock hook, and the rotating shaft of the stopper extends to the bottom of the head mounting cavity, and the rotating shaft of the stopper is connected to the wire pull reel.

[0012] Preferably, in order to make up for the height difference between the lock and the locking mechanism and improve the strength of the pedal, the movable pedal includes a pedal and a connecting arm connected front and back, and the connecting arm has a sloped surface at one end close to the pedal, so that a height difference is formed between the connecting arm and the upper surface of the pedal, and a cross bar is provided between the connecting arms, and a lock is installed on the cross bar.

[0013] Preferably, in order to expand the lateral width of the pedal and enable the pedal to have a fine-tuning function, a roller is provided on the outside of the connecting arm, and a fine-tuning component is provided on the connecting arm, and the fine-tuning component is located below the roller, and the fine-tuning component includes an arc block and an adjusting member, and the two ends of the arc block are slidably connected through a support and the inner side of the connecting arm, passing through the connecting arm, and the adjusting member is located on the support and abuts against the back of the arc block; there are horizontal slides in the two side brackets of the frame, and the bottom wall of the slide is bent downward to form a bent wall, and there is a mounting block between the bent wall and the two side brackets, and the arc surface of the arc block is in contact with the bent wall of the slide.

[0014] Preferably, in order to facilitate adjustment of the extended length of the pedal, a front support is provided at the top of the frame opening, and a buffer head is provided at the rear side of the pedal, and when the pedal is extended, the buffer head contacts the front support.

[0015] Beneficial effects: compared with the prior art, the present application has the following advantages: 1. considering installation strength and maintenance function: the frame structure for installing the pedal is changed to a C-shaped sheet metal part, and the locking mechanism is inserted and installed in the frame as a plug-in part, so as to ensure the installation strength of the frame and make the locking mechanism form a cantilever structure, thereby eliminating the function of the upper and lower surface cover plates of the frame as support parts; after the upper and lower cover plates are removed, an inspection window is formed, which is convenient for maintenance and can be maintained in two directions; 2. preventing deflection displacement of the locking mechanism: the installation frame is used as a support part of the frame, and has a cavity inside; the locking mechanism is located inside the installation cavity of the installation frame, so as to effectively prevent the locking mechanism and the pedal lock from being misaligned, and ensure effective locking of the pedal; 3. having good sealing performance: the bottom plate is changed, and a bridge cover plate and a water outlet hole are arranged; water entering the inside of the platform compensator along the pedal can flow out along the water outlet hole, and the bridge cover plate can prevent dust from entering, thereby avoiding the influence of the vehicle running environment on the operation of the platform compensator; 4. improving the transverse width of the pedal and being capable of fine-tuning the installation position of the pedal: the fine-tuning structure of the roller type is changed to a protrusion type, which is arranged above and below the roller, so as to reduce the transverse area occupied by the fine-tuning assembly, and help to improve the width of the pedal. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the platform compensator of the present application.

[0017] Figure 2 It is a schematic diagram of the frame structure of the platform compensator of the present application.

[0018] Figure 3 It is a schematic diagram of the locking mechanism structure.

[0019] Figure 4 It is Figure 1 It is an enlarged view of the local structure.

[0020] Figure 5 It is a side view of the lower cover plate structure.

[0021] Figure 6 It is a schematic diagram of the movable pedal structure.

[0022] Figure 7 It is a side view of the platform compensator of the present application.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the lower cover plate.

[0024] Figure 9 It is a front view of the platform compensator of the present application. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be further described below in combination with the drawings.

[0026] For example, Figure 1As shown, the platform compensator mainly consists of a frame 1, a movable pedal 2, a lower cover 3, a transmission mechanism 4, a locking mechanism 5, and a motor unlocking mechanism 6.

[0027] like Figure 2 The frame 1 is U-shaped and consists of two side brackets 11 and a rear side bracket 15. The two side brackets 11 are slidingly connected to the movable pedal 2. The rear side bracket 15 is a sheet metal part with a C-shaped cross-section. A locking mechanism 5 is provided on the rear side bracket 15, which is used to lock the movable pedal 2.

[0028] like Figure 3 、 Figure 4 The locking mechanism 5 includes a lock hook 51, a stopper and an unlocking mechanism 53, and a mounting bracket 54. The tail of the mounting bracket 54 is inserted into the rear bracket 15 and connected to the top plate and the bottom plate of the rear bracket 15 to form a cantilevered mounting bracket 54. The mounting bracket 54 is inserted into the frame as a plug-in component to ensure the installation strength of the frame 1 and to form a cantilevered structure for the locking mechanism 5, eliminating the function of the upper and lower surface covers of the frame 1 as support members. The mounting bracket 54 is a hollow profile structure with a mounting cavity formed inside, which can also avoid the locking mechanism 5 from generating deflection displacement and prevent the cantilevered locking mechanism 5 from being misaligned with the movable pedal 2. The mounting cavity is divided into two mounting cavities, a head and a tail. The lock hook 51 extends out of the mounting cavity, and the stopper and unlocking mechanism 53 are both located in the cavity. Specifically, the height of the tail mounting cavity 542 near the rear bracket 15 is greater than that of the head mounting cavity 541. The top of the head mounting cavity 541 is lowered to provide mounting space for the top of the fixing member extending into the mounting cavity, and the bottom is raised to provide mounting space for the manual unlocking mechanism of the locking mechanism 5. The side wall of the tail mounting cavity 542 near the rear bracket 15 is bent into the cavity. At the same time, the bottom plate of the rear bracket 15 is provided with an extension plate for supporting the tail mounting cavity 542. The bent portion of the tail mounting cavity 542 is used to avoid the transmission mechanism of the movable pedal 2 and to enhance the supporting strength of the tail mounting cavity 542. A gasket is provided between the bottom of the tail mounting cavity 542 and the rear bracket 15.

[0029] The lock hook 51, stopper, and unlocking mechanism 53 of the locking mechanism 5 of the present invention can be consistent with the structure disclosed in CN202011163638.9. Specifically, the lock hook 51, stopper, and head mounting cavity 541 are rotatably connected. A first torsion spring is connected to the rotating shaft of the lock hook 51. When in the relaxed state, the first torsion spring forces the lock hook 51 opening away from the movable pedal 2. The outer contour of the lock hook 51 is provided with a groove. A second torsion spring is mounted on the rotating shaft of the stopper. When in the relaxed state, the second torsion spring is squeezed and deformed by the relaxed first torsion spring. When locked, the lock hook 51 is pushed by the movable pedal 2 to rotate in a first direction, and the stopper is driven by the second torsion spring to rotate in a second direction. The stopper is inserted into the outer contour groove of the lock hook 51, preventing the lock hook 51 from rotating to release the movable pedal 2. The second direction of rotation is opposite to the first direction. The unlocking mechanism 53 is located in the tail mounting cavity 542. The unlocking mechanism 53 is an electromagnet. When electrically driven, the unlocking mechanism 53 can drive the stopper to rotate, squeezing the second torsion spring and releasing the lock hook 51.

[0030] like Figure 3 The manual unlocking mechanism includes a pull-wire drum 55, a rotating shaft of the stopper extending to the bottom of the mounting frame 54, a rotating shaft of the stopper connected to the pull-wire drum 55, and a steel wire rope connected to the pull-wire drum 55. When manually unlocked, the pull-wire drum 55 is driven to rotate by the steel wire rope, thereby driving the stopper to rotate and achieve unlocking. The unlocking mechanism 5 also includes an isolation lock hook, which is located in the head mounting cavity 541 and is rotationally connected to the head mounting cavity 541. A third torsion spring is provided on the isolation lock hook rotating shaft. When in a relaxed state, the third torsion spring drives the isolation lock hook away from the movable pedal 2. The isolation lock hook rotating shaft extends to the bottom of the head mounting cavity 541, and the isolation lock hook rotating shaft is connected to the pull-wire drum 57. A steel wire rope is connected to the pull-wire drum 57. When isolated, the steel wire rope is pulled to overcome the elastic force of the third torsion spring, so that the isolation lock hook is connected to the movable pedal 2 or buckled into the lock hook 51, restricting the unlocking of the movable pedal 2.

[0031] like Figure 2 There are horizontal slides 12 in the brackets 11 on both sides. The slides 12 are used to support the sliding of the movable pedal 2. The bottom wall of the slide 12 is bent downward to form a bent wall. There is a mounting block 14 between the bent wall and the brackets 11 on both sides. The mounting block 14 connects the frame 1 to the vehicle body. There is an adjusting gasket 16 at the bottom of the mounting block 14 for adjusting the height of the slide 12 so that the slide 12 fits the top surface of the frame 1. The bottom plate width of the brackets 11 on both sides of the frame 1 is greater than the top plate width.

[0032] The top and bottom surfaces of the frame 1 are equipped with removable upper and lower covers 3, which are convenient for inspection and regular maintenance of the locking components in both the upper and lower directions; Figure 8The lower cover 3 consists of a cover frame 31 and a partially sunken bottom panel 32. Sealing strips and cavities for installing these strips are designed around the cover frame 31 to ensure a reliable seal. A drainage hole 34 is located at the lowest point of the bottom panel 32, and a bridge-like dust cover 33 is installed over the drainage hole 34. This structure helps drain water from the platform compensator and prevents the ingress of large amounts of dust and foreign matter.

[0033] A reinforcing plate 13 is designed at the front end and middle of the bottom of the frame 1 to give the frame 1 better structural strength and is also used to install the lower cover 3. There are two corresponding lower cover plates 3, namely the front lower cover plate and the rear lower cover plate. The drainage hole 34 of the rear lower cover plate 3 deviates from the center line of the cover plate frame 31 to avoid the locking mechanism 5 of the rear bracket 15.

[0034] like Figure 6 The movable pedal 2 includes a front-to-rear pedal 21 and a connecting arm 22. A roller 23 is disposed on the outer side of the connecting arm 22, which is located within the slideway 12. The end of the connecting arm 22 closest to the pedal 21 has a sloped surface, making the upper surface of the connecting arm 22 higher than the pedal 21. A crossbar 28 is mounted between the connecting arms 22 on both sides, and a lock 25 is mounted on the crossbar 28. The crossbar 28 enhances the strength of the movable pedal 2 and compensates for the height difference between the lock 25 and the lock hook 51. The crossbar 28 can also be used to bundle electrical component wiring harnesses, install locking components, and switch triggers. A gravity detection device is provided at the rear end of the connecting arm 22 to detect whether the pedal 21 is being stepped on, thereby preventing safety accidents caused by the abnormal retraction of the pedal 21 when someone is stepping on it.

[0035] like Figure 6 、 Figure 7 、 Figure 9The connecting arm 22 is also provided with a fine-tuning assembly 24, which is located below the roller 23. The fine-tuning assembly 24 includes an arc block 241 and an adjusting member 242. The two ends of the arc block 241 are slidably connected to the inner side of the connecting arm 22 through a support. The arc surface at the front passes through the connecting arm 22. The adjusting member 242 is located on the support and abuts against the back of the arc block 241. The arc block 241 is made of nylon. During assembly, its arc surface abuts against the bent wall at the bottom of the slide 12. The adjusting member 242 is a screw. By turning the adjusting member 242, the length of the arc block 241 extending from the connecting arm 22 can be adjusted to achieve left and right fine-tuning of the movable pedal 2. Using the arc block 241 to replace the horizontal roller structure has a simple structure and occupies less horizontal space. The fine-tuning assembly 24 and the roller 23 are arranged up and down, saving horizontal space and helping to increase the horizontal length of the pedal. The frame 1 has a front support 7 at the top of the opening. The front support 7 is connected to the two side brackets 11. A buffer head 26 is installed on the rear side of the pedal 21. The buffer head 26 cooperates with the front support 7. When the pedal 21 is extended, the buffer head 26 contacts the front support 7. The position of the buffer head 26 is adjusted to adjust the extension size of the movable pedal 2. A brush that can be adjusted up and down is provided at the bottom of the front support 7. The brush contacts the surface of the movable pedal 2 to prevent foreign matter from entering the platform compensator. A buffer rubber strip 29 is designed at the front of the movable pedal 2 to effectively prevent passengers from bumping into the movable pedal 2 and causing injuries. At the same time, a sealing edge is designed at the bottom of the buffer rubber strip 29. When the platform compensator is retracted, the sealing edge at the bottom of the buffer rubber strip 29 can fit with the reinforcing plate 13 at the front end to achieve a sealing function.

[0036] like Figure 1 The movable pedal 2 slides back and forth through the transmission mechanism 4. The transmission mechanism 4 includes a motor 41 and a synchronization rod 42. The synchronization rod 42 is parallel to the rear bracket 15. There is a gear on the synchronization rod 42. The motor 41 drives the synchronization rod 42 to rotate through the gear. There are pulleys at both ends of the synchronization rod 42. Pulleys are also installed in the middle of the bottom plate of the two side brackets 11. There is a synchronous belt between the two pulleys. The synchronous belt is parallel to the slideway 12. A clamping piece is provided on the inner side of the connecting arm 22, and the clamping piece is clamped on the synchronous belt. Thus, the transmission mechanism 4 drives the movable pedal 2 to extend and retract, and the rear bracket 15 is equipped with a motor unlocking mechanism 6.

Claims

1. A platform compensator, comprising a U-shaped frame (1), a movable pedal (2) slidably connected to the frame (1), and a locking mechanism (5), wherein the locking mechanism (5) locks the movable pedal (2) after the movable pedal (2) is retracted, and is characterized in that: The longitudinal section of the rear bracket (15) of the frame (1) is C-shaped, and the locking mechanism (5) includes a lock hook (51) and a mounting frame (54); the rear end of the mounting frame (54) is inserted into the rear bracket (15) and connected to the top plate and the bottom plate of the rear bracket (15); a mounting cavity is formed inside the mounting frame (54), and the lock hook (51) is installed through the mounting cavity; the top and bottom surfaces of the frame (1) are provided with a detachable upper cover plate and a lower cover plate (3); the lower cover plate (3) includes a cover plate frame (31) and a partially sunken bottom panel (32); a drainage hole (34) is provided at the lowest point of the bottom panel (32), and a bridge-type dust cover (33) is provided on the drainage hole (34).

2. The platform compensator according to claim 1, characterized in that: The installation cavity is divided into two installation cavities, a head installation cavity and a tail installation cavity. Compared with the tail installation cavity (542), the top height of the head installation cavity (541) is lowered and the bottom is raised.

3. The platform compensator according to claim 2, characterized in that: The side wall of the tail installation cavity (542) close to the rear bracket (15) is bent toward the inside of the installation cavity, and the bottom plate of the rear bracket (15) is provided with an extension plate for supporting the tail installation cavity (542).

4. The platform compensator according to claim 2, characterized in that: A gasket is provided between the bottom of the tail mounting cavity (542) and the rear side bracket (15).

5. The platform compensator according to claim 1, characterized in that: A reinforcing plate (13) is provided at the front end and the middle of the bottom of the frame (1), and a sealing strip and a cavity for installing the sealing strip are designed around the cover frame (31).

6. The platform compensator according to claim 2, characterized in that: The locking mechanism includes a lock hook (51), a stopper, and an unlocking mechanism (53). The lock hook (51), the stopper, and the head mounting cavity (541) are rotatably connected. A first torsion spring is connected to the rotating shaft of the lock hook (51). The outer contour of the lock hook (51) is provided with a groove. A second torsion spring is provided on the rotating shaft of the stopper. When in a relaxed state, the second torsion spring is squeezed and deformed by the lock hook (51). When locked, the stopper is driven by the second torsion spring to rotate in a second direction and inserted into the outer contour groove of the lock hook (51). The unlocking mechanism (53) is located in the tail mounting cavity (542). When unlocking, the unlocking mechanism (53) drives the stopper to rotate, releasing the lock hook (51). The rotating shaft of the stopper extends to the bottom of the head mounting cavity (541), and the rotating shaft of the stopper is connected to the pull wire reel (55).

7. The platform compensator according to claim 1, characterized in that: The movable pedal (2) includes a pedal (21) and a connecting arm (22) connected front and rear. The connecting arm (22) has a sloped surface at one end close to the pedal so that the upper surface of the connecting arm (22) is higher than the pedal (21). A cross bar (28) is provided between the connecting arms (22), and a lock buckle (25) is installed on the cross bar (28).

8. The platform compensator according to claim 7, characterized in that: A roller (23) is provided on the outside of the connecting arm (22), and a fine-tuning assembly (24) is provided on the connecting arm (22). The fine-tuning assembly (24) is located below the roller (23). The fine-tuning assembly (24) includes an arc block (241) and an adjusting member (242). The two ends of the arc block (241) are slidably connected to the inside of the connecting arm (22) through a support and penetrate the connecting arm (22). The adjusting member (242) is located on the support and abuts against the back of the arc block (241). A transverse slideway (12) is provided in the brackets (11) on both sides of the frame (1). The bottom wall of the slideway (12) is bent downward to form a bent wall. A mounting block (14) is provided between the bent wall and the brackets (11) on both sides. The arc surface of the arc block (241) contacts the bent wall of the slideway (12).

9. The platform compensator according to claim 7, wherein the open top of the frame (1) is provided with a front support (7), and a buffer head (26) is installed on the rear side of the pedal (21), and when the pedal (21) is extended, the buffer head (26) contacts the front support (7).

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