Platform compensator

Abstract

The platform compensator comprises a U-shaped frame, a movable pedal connected with the frame in a sliding mode and a locking mechanism, after the movable pedal is retracted, the locking mechanism locks the movable pedal, the longitudinal section of a rear side support of the frame is in a C shape, and the locking mechanism comprises a lock hook and a mounting frame; the tail of the mounting frame is inserted into the rear support and connected with a top plate and a bottom plate of the rear support, a mounting cavity is formed in the mounting frame, and the lock hook is mounted through the mounting cavity. In the invention, a frame structure for mounting the pedal is changed into a C-shaped sheet metal part, and the locking mechanism is inserted into the frame as a connector clip, so that the mounting strength of the frame is ensured, meanwhile, the locking mechanism forms a cantilever structure, the cover plates on the upper and lower surfaces of the frame are prevented from being used as supporting pieces, and after the upper and lower cover plates are dismounted, a maintenance window is formed, so that the maintenance is convenient.

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 door area of ​​the train. 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 movement of the vehicle.

[0003] To achieve the above functions, the platform compensator needs to have a sliding / rotating mechanism, a driving mechanism and a pedal locking mechanism. According to the different installation positions of the platform compensator, the platform compensator is divided into two installation situations: inside the vehicle and under the vehicle. When installed on the vehicle, the installation does not need to consider the vehicle 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, and the pedal driving mechanism is 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 installation strength and 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: A 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 side bracket of the frame is C-shaped, and the locking mechanism includes a locking hook and a mounting frame; the rear end of the mounting frame is inserted into the rear side bracket and is connected to the top plate and the bottom plate of the rear side bracket. An installation cavity is formed inside the mounting frame, and the locking hook is installed through the installation 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 plate and a lower cover plate, wherein the lower cover plate comprises a cover plate frame and a partially sunken bottom panel, a drainage hole is provided at the lowest point of the sunken bottom panel, and a bridge-type dust cover is provided on the drainage hole.

[0010] Preferably, in order to increase the strength of the frame, improve the sealing performance, and ensure stable installation of the lower cover plate, reinforcing plates are designed 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 plate 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. 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 compensate for the height difference between the lock and the locking mechanism and to improve the strength of the pedal, the movable pedal includes a pedal and a connecting arm connected front and rear, 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 outer side of the connecting arm, and a fine-tuning component is provided on the connecting arm, 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 side of the arc block; there are transverse slides in the two side brackets of the frame, and the bottom wall of the slide is bent downward to form a bending wall, and there is a mounting block between the bending wall and the two side brackets, and the arc surface of the arc block is in contact with the bending wall of the slide.

[0014] Preferably, in order to facilitate adjustment of the extension 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 invention has the following advantages: 1. Taking into account both 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 into the frame as a plug-in part to ensure the installation strength of the frame. At the same time, the locking mechanism forms a cantilever structure, eliminating the upper and lower surface covers of the frame from serving as support parts. After the upper and lower covers are removed, an inspection window is formed, which is convenient for maintenance and can be maintained in both the upper and lower directions; 2. Preventing the locking mechanism from generating deflection displacement: After the mounting frame is used as a support part of the frame, there is a cavity inside, and the locking mechanism is located The inside of the mounting cavity of the mounting frame can effectively prevent locking and misalignment of the pedal lock to ensure that the pedal is effectively locked; 3. It has good sealing performance: the bottom panel is changed, and a bridge cover and a water outlet are set. The water that extends into the platform compensator along the pedal can flow out along the water outlet, and the bridge cover can reduce the entry of dust, thereby avoiding the vehicle operating environment from affecting the operation of the platform compensator; 4. The lateral width of the pedal is increased, and the installation position of the pedal can be fine-tuned: the roller-type fine-tuning structure is changed to a convex block type, and is set up and down with the roller to reduce the lateral occupation area of ​​the fine-tuning component, which helps to increase the width of the pedal. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the framework structure of the platform compensator of the present invention;

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

[0019] Figure 4 for Figure 1 A magnified view of the local structure;

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

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

[0022] Figure 7 It is a side sectional view of the platform compensator of the present invention;

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

[0024] Fig. 9 It is a front cross-sectional view of the platform compensator of the present invention. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1As shown, the platform compensator is mainly composed of a frame 1, a movable pedal 2, a lower cover plate 3, a transmission mechanism 4, a locking mechanism 5, and an 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 slidably 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, and the locking mechanism 5 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 52, an unlocking mechanism 53, and a mounting frame 54. The tail 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 to form a cantilevered mounting frame 54. The mounting frame 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, thereby eliminating the function of the upper and lower surface covers of the frame 1 as supporting parts. The mounting frame 54 is a hollow profile structure with a mounting cavity formed inside, which can also avoid the deflection displacement of the locking mechanism and prevent the cantilevered locking mechanism 5 from being misaligned with the movable pedal 2. The installation cavity is divided into two installation cavities, namely, the head and the tail. The lock hook 51 extends out of the installation cavity. The stopper 52 and the unlocking mechanism 53 are both located in the cavity. Specifically, the height of the tail installation cavity 542 close to the rear bracket 15 is greater than that of the head installation cavity 541. The top height of the head installation cavity 541 is lowered, and the top provides installation space for the top of the fixing part extending into the installation cavity. The bottom is raised to provide installation space for the manual unlocking mechanism of the locking mechanism 5. The side wall of the tail installation cavity 542 close to 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 installation cavity. The bent part of the tail installation cavity 542 is used to avoid the transmission mechanism of the movable pedal 2 and improve the supporting strength of the tail installation cavity 542. There is a gasket between the bottom of the tail installation cavity 542 and the rear bracket 15.

[0029] The lock hook 51, stopper 52 and unlocking mechanism 53 structures of the locking mechanism 5 of the present invention can be consistent with the structure disclosed in CN202011163638.9, wherein the lock hook 51, the stopper 52 (not shown) and the head mounting cavity 541 are rotatably connected, and a first torsion spring is connected to the rotating shaft of the lock hook 51. When in a relaxed state, the first torsion spring makes the opening of the lock hook 51 move away from the movable pedal 2. A groove is provided on the outer contour of the lock hook 51, and a second torsion spring is provided on the rotating shaft of the stopper 52. When in a relaxed state, the second torsion spring is squeezed and deformed by the first torsion spring in a relaxed state. When locked, the lock hook 51 is pushed by the movable pedal 2 to rotate in a first direction, and the stopper 52 is driven by the second torsion spring to rotate in a second direction. The stopper 52 is inserted into the groove of the outer contour of the lock hook 51 to prevent the lock hook 52 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 installation cavity 542 . The unlocking mechanism 53 is an electromagnet. When the unlocking mechanism 53 is electrically driven, it can drive the stopper 52 to rotate, squeeze the second torsion spring, and release the lock hook 51 .

[0030] like Figure 3 The manual unlocking mechanism includes a pull-wire drum 55, the rotating shaft of the stopper 52 extends to the bottom of the mounting frame 54, the rotating shaft of the stopper 52 is connected to the pull-wire drum 55, and the pull-wire drum 55 is connected to a steel wire rope 58 (not shown). When manually unlocking, the pull-wire drum 55 is driven to rotate by the steel wire rope 58, and then the stopper 52 is driven to rotate to achieve unlocking. The unlocking mechanism 5 also includes an isolation lock hook 56 (not shown), which is located in the head mounting cavity 541 and is rotatably connected to the head mounting cavity 541. A third torsion spring is provided on the rotating shaft of the isolation lock hook 56. When in the relaxed state, the third torsion spring drives the isolation lock hook 56 away from the movable pedal 2. The rotating shaft of the isolation lock hook 56 extends to the bottom of the head mounting cavity 541, and the rotating shaft of the isolation lock hook 56 is connected to the pull wire drum 57, and the pull wire drum 57 is connected to the wire rope 59 (not shown). When isolating, the wire rope 59 is pulled to overcome the elastic force of the third torsion spring, so that the isolation lock hook 56 is connected to the movable pedal 2 or buckled into the lock hook 51, restricting the movable pedal 2 from being unlocked.

[0031] like Figure 2 There are transverse 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 are mounting blocks 14 between the bent wall and the brackets 11 on both sides. The mounting blocks connect the frame 1 to the vehicle body. There are adjusting gaskets 15 at the bottom of the mounting blocks 14, which are used to adjust 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 installed with a removable upper cover (not shown) and a lower cover 3, which facilitates the inspection and regular maintenance of the locking components in both the upper and lower directions; Figure 8The lower cover plate 3 is composed of a cover plate frame 31 and a partially sunken bottom panel 32. The cover plate frame 31 is designed with sealing strips and cavities for installing the sealing strips around it to achieve reliable sealing of the lower cover plate 3. A drainage hole 34 is provided at the lowest point of the bottom panel 32, and a bridge-type dust cover 34 is provided on the drainage hole 34. This structure helps to drain the accumulated water in the platform compensator and prevent a large amount of dust and foreign matter from entering.

[0033] A reinforcing plate 13 is designed at the front end and the 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 a front lower cover plate and a rear lower cover plate. The drainage hole 34 of the lower cover plate 3 at the rear deviates from the center line of the cover frame 31 to avoid the locking mechanism of the rear bracket 15.

[0034] like Figure 6 The movable pedal 2 includes a pedal 21 and a connecting arm 22 connected front and back. The connecting arm 22 has a roller 23 on the outside. The roller 23 is located in the slideway 12. The connecting arm 22 has a sloped surface at one end close to the pedal, so that the height of the upper surface of the connecting arm 22 is greater than the pedal 21. A cross bar 28 is installed in the middle of the connecting arms 22 on both sides. A lock 25 is installed on the cross bar 28. By setting the cross bar 28, the strength of the movable pedal 2 is improved, and the height difference between the lock 25 and the lock hook 51 is supplemented. The cross bar 28 can also be used to bundle electrical component harnesses, install locking components, and switch triggers. A gravity detection device is provided at the tail end of the connecting arm 22 to detect whether the pedal is stepped on by someone, so as to avoid abnormal retraction of the pedal when someone steps on it, resulting in safety accidents.

[0035] like Figure 6 , Figure 7 , Fig. 9The connecting arm 22 is also provided with a fine-tuning assembly 24, which is located below the roller. 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 through a support and the inner side of the connecting arm 22. The arc surface located in 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. When assembled, its arc surface abuts against the bottom bending wall of the slideway 12. The adjusting member 242 is a screw. The adjusting member 242 can be turned to adjust the length of the arc block 241 extending out of the connecting arm 22, so as 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, which saves horizontal space and helps to increase the horizontal length of the pedal. The frame 1 has a front support 7 at the top of the opening, and the front support 7 is connected to the brackets 11 on both sides. A buffer head 26 is installed on the rear side of the pedal 21, and 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. A brush that can be adjusted up and down is provided at the bottom of the front and rear supports 7. The brush contacts the surface of the movable pedal 21 to prevent foreign matter from entering the platform compensator. A buffer rubber strip 29 is designed at the front of the movable pedal assembly 2 to effectively prevent passengers from bumping into the movable pedal assembly 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 assembly 13 at the front end to achieve a sealing function.

[0036] like Figure 1 The movable pedal 2 slides forward and backward through a transmission mechanism. The transmission mechanism includes a motor 41 and a synchronization rod 42. The synchronization rod 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 drives the movable pedal 2 to extend and retract, and a motor unlocking mechanism 6 is installed on the rear bracket 15.

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 locks the movable pedal after the movable pedal 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) comprises a locking 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 locking hook (51) is installed through the mounting cavity.

2. The platform compensator according to claim 1, characterized in that: 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 (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 rear mounting cavity (542) close to the rear bracket (15) is bent toward the inside of the mounting cavity, and the bottom plate of the rear bracket (15) is provided with an extension plate for supporting the rear mounting cavity (542).

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

5. The platform compensator according to claim 1, characterized in that: The top and bottom surfaces of the frame (1) are provided with a detachable upper cover plate and a lower cover plate (3), wherein the lower cover plate (3) comprises a cover plate frame (31) and a partially sunken bottom panel (32), wherein a drainage hole (34) is provided at the lowest point of the bottom panel (32), and a bridge-type dust cover (34) is provided on the drainage hole (34).

6. The platform compensator according to claim 5, characterized in that: A reinforcing plate (13) is designed 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).

7. The platform compensator according to claim 2, characterized in that: The locking mechanism comprises a lock hook (51), a stopper (52), and an unlocking mechanism (53). The lock hook (51), the stopper (52), and the head mounting cavity 541 are rotatably connected. A first torsion spring is connected to the rotating shaft of the lock hook (51). A groove is provided on the outer contour of the lock hook (51). A second torsion spring is provided on the rotating shaft of the stopper (52). When in a relaxed state, the second torsion spring is squeezed and deformed by the lock hook (51). When locked, the stopper (52) is driven by the second torsion spring to rotate along a second direction and insert into the groove of the outer contour 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 (52) to rotate, thereby releasing the lock hook (51). The rotating shaft of the stopper (52) extends to the bottom of the head mounting cavity (541), and the rotating shaft of the stopper (52) is connected to the wire pulley (55).

8. The platform compensator according to claim 1, characterized in that: The movable pedal (2) comprises 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).

9. The platform compensator according to claim 1, 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) comprises 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 two side brackets (11) of the frame (1), and 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 two side brackets (11), and the arc surface of the arc block (241) contacts the bent wall of the slideway (12).

10. According to the platform compensator of claim 8, the frame (1) has a front support (7) at the open top, and a buffer head (26) is installed on the rear side of the pedal (21). When the pedal (21) is extended, the buffer head (26) contacts the front support (7).

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