An opening and closing mechanism for a bus platform screen door that is easy to maintain

Abstract

The present invention discloses an opening and closing mechanism for a bus screen door that is easy to maintain, comprising a fixed door, a movable door, a control unit, a servo motor and an electric push rod, wherein an inspection door is arranged on the front outer surface of the fixed door, a control unit and a fixed box are arranged on the inner side of the fixed door, and the fixed box is arranged on one side of the control unit, a servo motor is fixed on the inner side of the fixed box by screws, an output end of the servo motor is connected to a first pulley through a coupling, a belt is sleeved on the outer surface of the first pulley, and a second pulley is arranged on the other end of the belt, a gear is connected to the rear end of the second pulley through a rotating shaft, a first fixed track is arranged on the top of the gear, a sliding sleeve is sleeved on the outer surface of the first fixed track, and a connecting pile is welded on the upper surface of the first fixed track. The present invention adopts a modular structural design, is easy to replace the sliding track, and has a short maintenance time.

Description

Technical Field

[0001] The invention relates to the technical field of BRT public transportation, in particular to an opening and closing mechanism for a public transportation screen door which is easy to maintain. Background Art

[0002] Buses are the most commonly used form of public transportation. The construction of a new bus line has low investment costs and strong mobility. Therefore, buses are also the most widely used form of public transportation. Bus routes are generally located in densely populated areas, bringing great convenience to people's lives.

[0003] However, bus routes are all main traffic routes, which leads to slow bus speed and difficult to control the time for buses to arrive at the station. BRT bus combines the advantages of bus and rail transit, has dedicated roads, and has more complete supporting stations. The experience effect is better than traditional bus, and the investment cost is much lower than that of rail transit. In order to ensure the safety of passengers waiting at BRT bus stations, existing BRT bus stations are equipped with bus screen doors. The bus screen doors are mainly composed of three parts: fixed doors, movable doors and opening and closing mechanisms. The opening and closing mechanisms are mainly used to control the opening and closing of movable doors.

[0004] In this regard, Chinese patent application number: 201921042892.6 discloses a novel rapid bus station platform shield door transmission mechanism, wherein a first roller group is fixedly connected to one side of the top of the movable door panel, and a first straight-axis light rod is fixedly installed at the fitting position of the inner side of the fixed door box corresponding to the first roller group, wherein a driving device is installed at the connection position of the fixed door box and the movable door panel, and a second roller group is fixedly connected to the bottom of the movable door panel at the same side position corresponding to the first roller group, and a second straight-axis light rod is fixedly installed at the position of the inner side of the fixed door box corresponding to the second roller group; the novel rapid bus station platform shield door transmission mechanism proposed in the utility model greatly reduces friction resistance through roller rolling friction, and at the same time increases the practical life of the sliding device. At the same time, the utility model has a simple structure and low processing cost, can greatly reduce noise pollution during movement, and has maintenance and repair costs, and is highly practical. It is provided with parts such as a driving device and a first roller group, which can realize the opening and closing of the shielding door, and its roller groups are arranged at the upper and lower ends of the shielding door, which can ensure the opening and closing stability of the shielding door. However, by installing roller groups at both ends, maintenance will be very troublesome when the roller group or the driving device fails.

[0005] In this regard, Chinese patent application No.: 201910831180.0 discloses a rail transit anti-pinch shielding door, which includes two sets of symmetrically arranged mounting columns, a shielding cover, a sliding door frame, a sliding door track and a sliding door; the above two sets of sliding doors move toward each other on the corresponding sliding door tracks to open or close; the distance between the shielding door track and the rail transit train body is greater than a safety distance A, preferably, the safety distance A is 30 cm; it is characterized in that: it also has a sweeping and closing device, the sweeping and closing device includes a scissor mechanism and a gear driving mechanism; one of the two shear handles at the driving end of the scissor mechanism is hinged to the ground, and the other can slide in a direction perpendicular to the sliding direction of the shielding door to drive the driven shear handle to open and close; a sweep arm rod is installed on the final driven shear handle; the gear driving mechanism includes a rack installed on the sliding door, an intermediate gear meshing with the rack, and a sweep arm gear meshing with the intermediate gear, the sweep arm gear is fixedly connected to the shear handle hinged to the ground and is coaxial with the hinge shaft; the length of the shear handle hinged to the ground is less than the value of the safety distance A. It is equipped with a sliding door track and is only installed at the top, which reduces the number of locations where failures may occur and makes maintenance easier, but its stability is not as good as installing drive devices at both ends of the shielding door.

[0006] In view of the above problems, an opening and closing mechanism is designed in the prior art and installed in the middle of the shield door, which ensures the stability of opening and closing and reduces the location where faults occur. However, in order to ensure the stability of opening and closing, the sliding track on the existing opening and closing mechanism is completely installed on the shield door. Once any part of the sliding track is deformed and bent, it needs to be disassembled as a whole. To disassemble the entire sliding track, the shield door needs to be disassembled as a whole, resulting in a long maintenance time and inconvenient maintenance. Therefore, it is urgent to design an opening and closing mechanism for bus shield doors that is easy to maintain to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide an opening and closing mechanism for a bus screen door which is easy to maintain, so as to solve the problem proposed in the above background technology that if any part of the sliding track is deformed or bent, the entire sliding track needs to be disassembled. To disassemble the entire sliding track, the screen door needs to be removed as a whole, resulting in a long maintenance time and inconvenient maintenance.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an opening and closing mechanism for a bus screen door that is easy to maintain, comprising a fixed door, a movable door, a control unit, a servo motor and an electric push rod, wherein an inspection door is arranged on the front outer surface of the fixed door, a control unit and a fixing box are arranged on the inner side of the fixed door, and the fixing box is arranged on one side of the control unit, a servo motor is fixed to the inner side of the fixing box by screws, an output end of the servo motor is connected to a first pulley through a coupling, a belt is sleeved on the outer surface of the first pulley, and a second pulley is arranged on the other end of the belt, a rear end of the second pulley is connected to a gear through a rotating shaft, a first fixed rail is arranged on the top end of the gear, a sliding sleeve is sleeved on the outer surface of the first fixed rail, and a first fixed rail is sleeved on the outer surface of the first fixed rail. A connecting pile is welded on the upper surface of the track, a fixing pile is fixed to the outer surface of the rear end of the connecting pile by bolts, and the fixing pile is fixed to the inner wall of the fixed door by screws, a track mounting compartment is provided on the inner side of the movable door, a connecting track and a second fixed track are provided on the inner side of the track mounting compartment, a clamping pile is fixed to the outer surface of the connecting track by screws, a connecting mechanism is provided on the outer surface of one end of the second fixed track, and a fixing block is welded to the outer surface of the other end of the second fixed track, a fixing groove is provided on one side of the fixing block, and the fixing groove is provided on the inner wall of the track mounting compartment, sliding grooves are provided on the outer surfaces of both sides of the second fixed track, fixing strips are integrally connected to the outer surfaces of both sides of the second fixed track, and a guide groove is provided on the inner wall of the track mounting compartment.

[0009] Preferably, a conduction mechanism is provided on the inner side of the fixed door, and a connecting strip is provided at the rear end of the conduction mechanism. The conduction mechanism and the connecting strip are both provided in two groups. One group of the connecting strips is fixed to the inner wall of the fixed door by screws, and the other group of the connecting strips is fixed to the inner wall of the inspection door by screws. The two groups of the conduction mechanisms and the connecting strips correspond one to one.

[0010] Preferably, the movable door and the fixed door form a telescopic structure, a pulley bar is fixed to the bottom end of the movable door by screws, a pulley groove is fixed to the lower surface of the fixed door by screws, the pulley bar is arranged on the inner side of the pulley groove, and the pulley bar and the pulley groove form a sliding structure.

[0011] Preferably, one end of the inspection door is rotatably connected to the inner wall of the fixed door via a rotating shaft, a lock is installed at the other end of the inspection door, and the other end of the inspection door is connected and fixed to the fixed door via the lock.

[0012] Preferably, the lower surface of the first fixed rail is a toothed structure, the lower surface structures of the connecting rail and the second fixed rail are the same as the lower surface structure of the first fixed rail, the lower surface of the first fixed rail is meshed with the top of the gear, and the first fixed rail and the gear form a movable structure.

[0013] Preferably, the fixing bar is inserted into the guide groove, the outer surface structure of both sides of the second fixed rail is the same as the outer surface structure of both sides of the connecting rail, the outer surface structure of both sides of the connecting rail is the same as the outer surface structure of both sides of the first fixed rail, and the outer surfaces of both sides of the first fixed rail, the connecting rail and the second fixed rail are all provided with fixing bars and slide grooves, and each group of fixing bars is connected to the end of the slide groove.

[0014] Preferably, an electric push rod is fixed to the inner side of the fixed box by screws, and the output end of the electric push rod is rotatably connected to a bracket through a hinge shaft, connecting shafts are provided at both ends of the bracket, and both ends of the connecting shaft are rotatably connected to the inner wall of the fixed box through bearings, and the bracket forms a rotating structure with the fixed box through the connecting shaft, and a sleeve is welded on the upper surface of the bracket, and the number of the sleeves is two groups, and the two groups of sleeves are arranged at the two ends of the gear respectively, and the two ends of the gear are rotatably connected to the sleeve through a rotating shaft.

[0015] Preferably, the transmission mechanism includes a fixed frame, a guide wheel and a fixed sleeve, the guide wheels are evenly arranged on the inner side of the fixed frame, and the upper and lower ends of the guide wheels are rotatably connected to the inner wall of the fixed frame through a rotating shaft, a fixed sleeve is welded on the outer surface of the rear end of the fixed frame, the inner wall shape of the fixed sleeve is consistent with the outer surface shape of the connecting strip, the outer surface shape of the connecting strip is a "T"-shaped structure, the connecting strip is plugged into the fixed sleeve, and the bottom end of the fixed frame is connected and fixed to the inner wall of the fixed door by screws.

[0016] Preferably, the connection mechanism includes a connection block, a sleeve, a connecting sleeve and a spring, the connection block is in a "U"-shaped structure, one end of the connection block is connected and fixed to the second fixed rail by a screw, the other end of the connection block is provided with a sleeve on the inner side, the inner side of the sleeve is provided with a connecting sleeve and a spring, one end of the connecting sleeve is in a "T"-shaped structure, and the outer surface shape of one end of the connecting sleeve is consistent with the inner wall shape of the sleeve, and the other end of the connecting sleeve is in a hemispherical structure.

[0017] Preferably, one end of the clamping pile is connected and fixed to the outer surface of one end of the connecting track by a screw, and the other end of the clamping pile is a spherical structure, the clamping pile is engaged with the connecting sleeve, the outer surface of one end of the connecting track is a concave structure, the concave part of the connecting track is consistent with the shape of the outer surface of the connecting block, the clamping pile is arranged in the concave part of the connecting track, the left outer surface structure of the connecting track is the same as the left outer surface structure of the second fixed track, and the right outer surface structure of the first fixed track is the same as the right outer surface structure of the connecting track.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the opening and closing mechanism of the bus screen door which is easy to maintain adopts a modular structure design, which is convenient for replacing the sliding track and shortens the maintenance time.

[0019] A track installation bin, a first fixed track, a connecting track, a second fixed track, a fixing bar, a connecting pile, a fixing pile, a guide groove, a fixing block, a fixing groove, a fixing pile and a connecting mechanism are provided. A track installation bin is provided on the inner side of a movable door, and a guide groove is provided on the inner wall of the track installation bin so that the fixing bar can be plugged into the guide groove. The right end of the second fixed track is plugged into the fixing groove through the fixing block and fixed, and the ends of the first fixed track, the connecting track and the second fixed track are connected and fixed by the fixing pile and the connecting mechanism, and the first fixed track is connected and fixed to the fixing pile through the connecting pile, so that the second fixed track can be fixed to the second fixed track. A fixed rail, a connecting rail and a second fixed rail can be combined into a complete sliding rail and fixed in a rail installation compartment. When any one of the first fixed rail, the connecting rail and the second fixed rail is deformed and needs to be repaired, it is only necessary to remove the fixing screws at the connection between the connecting pile and the fixed pile, and the first fixed rail, the connecting rail and the second fixed rail can be pulled out from the rail installation compartment in turn for targeted repair, so as to facilitate replacement of the sliding rail, solve the problem of needing to dismantle the shielding door to remove the entire sliding rail for repair, shorten the repair time, and achieve the effect of facilitating repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic front view of the structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A schematic front view and cross-sectional view of the structure of the middle fixed door and the movable door;

[0022] Figure 3 For the present invention Figure 1 A schematic diagram of the side cross-section of the structure at AA in the middle;

[0023] Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 5 For the present invention Figure 2 A schematic diagram of a top view and cross-section of the structure of the middle transmission mechanism;

[0025] Figure 6 For the present invention Figure 2 A schematic front view and cross-sectional view of the structure of the middle fixed box;

[0026] Figure 7 For the present invention Figure 2 Schematic diagram of the top view and section view of the structure of the middle fixed box.

[0027] In the figure: 1, fixed door; 2, movable door; 3, inspection door; 4, track installation compartment; 5, first fixed track; 6, connecting track; 7, second fixed track; 8, fixed strip; 9, slide groove; 10, sliding sleeve; 11, control unit; 12, fixed box; 13, first pulley; 14, belt; 15, gear; 16, servo motor; 17, second pulley; 18, transmission mechanism; 181, fixed frame; 182, guide wheel; 183, fixed sleeve; 19, connecting pile; 20, fixed pile; 21, guide groove; 22, fixed block; 23, fixed groove; 24, clamping pile; 25, connecting mechanism; 251, connecting block; 252, sleeve; 253, connecting sleeve; 254, spring; 26, connecting strip; 27, pulley bar; 28, electric push rod; 29, bracket; 30, connecting shaft; 31, sleeve; 32, pulley groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-7 An embodiment of the present invention is as follows: a maintenance-friendly opening and closing mechanism for a bus screen door, comprising a fixed door 1, a movable door 2, a control unit 11, a servo motor 16 and an electric push rod 28, an inspection door 3 is arranged on the front outer surface of the fixed door 1, one end of the inspection door 3 is rotatably connected to the inner wall of the fixed door 1 through a rotating shaft, a lock is installed at the other end of the inspection door 3, and the other end of the inspection door 3 is connected and fixed to the fixed door 1 through the lock, such as Figure 1 and Figure 5 As shown, by assembling an inspection door 3 at the front end of the fixed door 1, after the inspection door 3 is opened, the components inside the fixed door 1 can be directly seen, which is convenient for maintenance.

[0030] A control unit 11 and a fixed box 12 are provided on the inner side of the fixed door 1, and the fixed box 12 is provided on one side of the control unit 11. A servo motor 16 is fixed to the inner side of the fixed box 12 by screws, and the output end of the servo motor 16 is connected to a first pulley 13 through a coupling, a belt 14 is sleeved on the outer surface of the first pulley 13, and a second pulley 17 is provided at the other end of the belt 14, and the rear end of the second pulley 17 is connected to a gear 15 through a rotating shaft, and a first fixed track 5 is provided at the top of the gear 15.

[0031] Preferably, the lower surface of the first fixed track 5 is a toothed structure, the lower surface structures of the connecting track 6 and the second fixed track 7 are the same as the lower surface structure of the first fixed track 5, the lower surface of the first fixed track 5 is meshed with the top of the gear 15, and the first fixed track 5 and the gear 15 form a movable structure, such as Figure 2 and Figure 6 As shown, by meshing the gear 15 with the first fixed track 5 , the gear 15 can drive the first fixed track 5 to move left and right when rotating.

[0032] Preferably, an electric push rod 28 is fixed to the inner side of the fixed box 12 by screws, and the output end of the electric push rod 28 is rotatably connected to a bracket 29 through a hinge shaft, and connecting shafts 30 are provided at both ends of the bracket 29, and both ends of the connecting shaft 30 are rotatably connected to the inner wall of the fixed box 12 through bearings. The bracket 29 forms a rotating structure with the fixed box 12 through the connecting shaft 30, and a sleeve 31 is welded on the upper surface of the bracket 29. The number of the sleeve 31 is two groups, and the two groups of sleeves 31 are arranged at the two ends of the gear 15, and the two ends of the gear 15 are rotatably connected to the sleeve 31 through a rotating shaft, such as Figure 6-7 As shown, an electric push rod 28 is installed in the fixed box 12, and the gear 15 is rotatably connected to the sleeve 31 through the rotating shaft, so that the bracket 29 and the sleeve 31 can cooperate to support the gear 15. When the electric push rod 28 is powered and extended, the right end of the bracket 29 can rotate with the connecting shaft 30 as the center, so that the bracket 29 drives the gear 15 away from the bottom end of the first fixed track 5, so that the first fixed track 5 can lose the limit, so that the movable door 2 can be conveniently opened and closed manually. The circuit control module of the electric push rod 28 can be connected to the emergency switch, so that after the emergency switch is turned on, the electric push rod 28 can work through the emergency independent power supply to drive the gear 15 away from the first fixed track 5, so that the movable door 2 is easier to open in an emergency.

[0033] A sliding sleeve 10 is sleeved on the outer surface of the first fixed rail 5, a connecting pile 19 is welded on the upper surface of the first fixed rail 5, a fixing pile 20 is fixed to the outer surface of the rear end of the connecting pile 19 by bolts, and the fixing pile 20 is fixed to the inner wall of the fixed door 1 by screws, a rail installation compartment 4 is opened on the inner side of the movable door 2, a connecting rail 6 and a second fixed rail 7 are arranged on the inner side of the rail installation compartment 4, a clamping pile 24 is fixed to the outer surface of the connecting rail 6 by screws, and a connecting mechanism 25 is arranged on the outer surface of one end of the second fixed rail 7.

[0034] Preferably, the connection mechanism 25 includes a connection block 251, a sleeve 252, a connecting sleeve 253 and a spring 254. The connection block 251 is in a "U"-shaped structure. One end of the connection block 251 is connected and fixed to the second fixed rail 7 by a screw. The other end of the connection block 251 is provided with a sleeve 252 on the inner side. The inner side of the sleeve 252 is provided with a connecting sleeve 253 and a spring 254. One end of the connecting sleeve 253 is in a "T"-shaped structure, and the outer surface shape of one end of the connecting sleeve 253 is consistent with the inner wall shape of the sleeve 252. The other end of the connecting sleeve 253 is in a hemispherical structure. The connecting sleeve 253 and the sleeve 252 form a telescopic structure, and the connecting sleeve 253 and the spring 254 form an elastic structure. The spring 254 provides elastic force for the connecting sleeve 253, so that the connecting sleeve 253 can always remain as shown when no external force is applied. Figure 4 Status shown.

[0035] Preferably, one end of the clamping pile 24 is connected and fixed to the outer surface of one end of the connecting track 6 by a screw, and the other end of the clamping pile 24 is a spherical structure. The clamping pile 24 is engaged with the connecting sleeve 253. The outer surface of one end of the connecting track 6 is a concave structure. The concave part of the connecting track 6 is consistent with the outer surface shape of the connecting block 251. The clamping pile 24 is arranged in the concave part of the connecting track 6. The left outer surface structure of the connecting track 6 is the same as the left outer surface structure of the second fixed track 7, and the right outer surface structure of the first fixed track 5 is the same as the right outer surface structure of the connecting track 6. Figure 4 As shown, the second fixed track 7 can be connected to the connecting track 6 by clamping the upper and lower ends of the clamping pile 24 with the connecting sleeve 253. Similarly, the connecting track 6 can also be connected to the clamping pile 24 through the connecting mechanism 25. When separating, it only needs to be pulled outward with force to make the clamping pile 24 push the connecting sleeve 253 to retract into the sleeve 252, and the limit of the clamping pile 24 can be released, so that the connecting track 6 and the second fixed track 7 can be separated. Similarly, the first fixed track 5 and the connecting track 6 can also be easily separated.

[0036] A fixing block 22 is welded to the outer surface of the other end of the second fixed rail 7, and a fixing groove 23 is provided on one side of the fixing block 22. The inner wall shape of the fixing groove 23 is consistent with the outer surface shape of the fixing block 22. By inserting the fixing block 22 into the fixing groove 23, the second fixed rail 7 can be prevented from shaking in the rail mounting compartment 4, and the stability is further improved. The fixing groove 23 is provided on the inner wall of the rail mounting compartment 4, and sliding grooves 9 are provided on the outer surfaces of both sides of the second fixed rail 7. The outer surfaces of both sides of the second fixed rail 7 are integrally connected with fixing bars 8, and a guide groove 21 is provided on the inner wall of the rail mounting compartment 4.

[0037] Preferably, the fixing strip 8 is inserted into the guide groove 21, the outer surface structure of both sides of the second fixed rail 7 is the same as the outer surface structure of both sides of the connecting rail 6, and the outer surface structure of both sides of the connecting rail 6 is the same as the outer surface structure of both sides of the first fixed rail 5. The outer surfaces of both sides of the first fixed rail 5, the connecting rail 6 and the second fixed rail 7 are all provided with fixing strips 8 and slide grooves 9, and each set of fixing strips 8 and slide grooves 9 are connected head to tail, such as Figure 2-3 As shown, by assembling the fixing strips 8 and the slide grooves 9 on the first fixed rail 5, the connecting rail 6 and the second fixed rail 7, after the first fixed rail 5, the connecting rail 6 and the second fixed rail 7 are combined end to end, the fixing strips 8 and the slide grooves 9 can be connected end to end, so that the inner wall guide rail of the sliding sleeve 10 can slide in the slide groove 9, making the first fixed rail 5, the connecting rail 6 and the second fixed rail 7 more stable when sliding left and right.

[0038] Preferably, a conducting mechanism 18 is provided on the inner side of the fixed door 1, and a connecting strip 26 is provided at the rear end of the conducting mechanism 18. The number of the conducting mechanism 18 and the connecting strip 26 are both two groups. One group of connecting strips 26 is fixed to the inner wall of the fixed door 1 by screws, and the other group of connecting strips 26 is fixed to the inner wall of the inspection door 3 by screws. The two groups of conducting mechanisms 18 correspond to the connecting strips 26 one by one. The conducting mechanism 18 includes a fixing frame 181, a guide wheel 182 and a fixing sleeve 183. The inner side of the fixing frame 181 is evenly provided with guide wheels 182, and the upper and lower ends of the guide wheel 182 are rotatably connected to the inner wall of the fixing frame 181 through a rotating shaft. A fixing sleeve 183 is welded on the outer surface of the rear end of the fixing frame 181. The shape of the inner wall of the fixing sleeve 183 is consistent with the shape of the outer surface of the connecting strip 26. The outer surface of the connecting strip 26 is in a "T" shape. The connecting strip 26 is plugged into the fixing sleeve 183, and the bottom end of the fixing frame 181 is connected and fixed to the inner wall of the fixed door 1 by screws, such as Figure 2 and Figure 5 As shown, by installing a conducting mechanism 18 on the inner wall of the fixed door 1 and the inspection door 3, after the movable door 2 is received in the fixed door 1, the outer surface of the movable door 2 can fit with the guide wheel 182, so that when the movable door 2 is extended and retracted in the fixed door 1, the conducting mechanism 18 is used to guide the front and back, thereby improving the movement stability. The fixing sleeve 183 is first plugged into the connecting strip 26, and then the bottom of the fixing frame 181 is connected and fixed to the fixed door 1 by screws, so that the fixing frame 181 can be positioned more quickly during assembly, the amount of fixing screws is reduced, and the replacement time is reduced.

[0039] Preferably, the movable door 2 and the fixed door 1 form a telescopic structure, the bottom end of the movable door 2 is fixed with a pulley bar 27 by screws, the lower surface of the fixed door 1 is fixed with a pulley groove 32 by screws, the pulley bar 27 is arranged on the inner side of the pulley groove 32, and the pulley bar 27 and the pulley groove 32 form a sliding structure, such as Figure 2As shown, a pulley groove 32 is fixed at the bottom end of the fixed door 1, and a pulley bar 27 is installed at the bottom of the movable door 2. The pulley bar 27 slides in the pulley groove 32, thereby improving the stability of the movable door 2 during movement.

[0040] Working principle: First, when assembling the fixed door 1 and the movable door 2, it is necessary to make grooves on the ground of the BRT bus station so that the pulley groove 32 can be embedded in the groove, and at the same time, the fixed door 1 can be connected and fixed to the ground by expansion screws, and then the control unit 11 is electrically connected to the control computer in the platform dispatching room through wires, so that the control unit 11 is in a powered-on state, and the electrical components servo motor 16 and electric push rod 28 in the fixed door 1 can be directly electrically connected to the control unit 11 through the wiring terminals, and the control unit 11 is controlled by the control computer in the external dispatching room, so that the control unit 11 controls the servo motor 16 and the electric push rod 28 to work.

[0041] When the movable door 2 needs to be opened, the external control computer sends a control command electrical signal to the control unit 11 through the wire, so that the control unit 11 controls the servo motor 16 to execute through the wire, and the servo motor 16 is powered on to rotate counterclockwise, so that the servo motor 16 cooperates with the first pulley 13, the belt 14 and the second pulley 17 to drive the gear 15 to rotate counterclockwise, so that the gear 15 can move the first fixed track 5 to the left, so that the first fixed track 5 drives the movable door 2 to retract into the fixed door 1. Similarly, the servo motor 16 can rotate clockwise to extend the movable door 2 from the fixed door 1.

[0042] When the internal components of the control unit 11 or the fixed box 12 fail, the fixed box 12 can be removed for repair by opening the inspection door 3. When the control unit 11 fails, the wiring terminals can be unplugged and the control unit 11 can be removed from the fixed door 1 for repair.

[0043] When the first fixed rail 5, the connecting rail 6 and the second fixed rail 7 produce deformation and other problems after long-term use and need to be repaired, it is only necessary to remove the fixing screws at the connection between the connecting pile 19 and the fixed pile 20, and the first fixed rail 5, the connecting rail 6 and the second fixed rail 7 can be pulled out from the rail installation compartment 4 in turn for targeted maintenance, without the need to disassemble the movable door 2, which is very convenient.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An opening and closing mechanism for a bus screen door that is easy to maintain, comprising a fixed door (1), a movable door (2), a control unit (11), a servo motor (16) and an electric push rod (28), characterized in that: The front end outer surface of the fixed door (1) is provided with an inspection door (3), the inner side of the fixed door (1) is provided with a control unit (11) and a fixed box (12), and the fixed box (12) is provided on one side of the control unit (11), the inner side of the fixed box (12) is fixed with a servo motor (16) by screws, the output end of the servo motor (16) is connected to a first pulley (13) via a coupling, the outer surface of the first pulley (13) is sleeved with a belt (14), and the other end of the belt (14) is provided with a second pulley (17), the rear end of the second pulley (17) is connected to a gear (15) via a rotating shaft, and the gear (15) is A first fixed rail (5) is arranged at the top end, a sliding sleeve (10) is sleeved on the outer surface of the first fixed rail (5), a connecting pile (19) is welded on the upper surface of the first fixed rail (5), a fixing pile (20) is fixed to the outer surface of the rear end of the connecting pile (19) by bolts, and the fixing pile (20) is fixed to the inner wall of the fixed door (1) by screws, a rail installation compartment (4) is provided on the inner side of the movable door (2), a connecting rail (6) and a second fixed rail (7) are arranged on the inner side of the rail installation compartment (4), a clamping pile (24) is fixed to the outer surface of the connecting rail (6) by screws, and an outer surface of one end of the second fixed rail (7) is fixed to the outer surface of the connecting rail (6) by screws. A connection mechanism (25) is provided, and a fixing block (22) is welded to the outer surface of the other end of the second fixed rail (7), a fixing groove (23) is provided on one side of the fixing block (22), and the fixing groove (23) is provided on the inner wall of the rail installation chamber (4), and sliding grooves (9) are provided on the outer surfaces of both sides of the second fixed rail (7), and fixing strips (8) are integrally connected to the outer surfaces of both sides of the second fixed rail (7), and a guide groove (21) is provided on the inner wall of the rail installation chamber (4); a conduction mechanism (18) is provided on the inner side of the fixed door (1), and a connecting strip (26) is provided at the rear end of the conduction mechanism (18), and the conduction mechanism (18) is provided on the inner side of the fixed door (1). The number of the transmission mechanism (18) and the connecting strip (26) is two groups, one group of the connecting strips (26) is fixed to the inner wall of the fixed door (1) by screws, and the other group of the connecting strips (26) is fixed to the inner wall of the inspection door (3) by screws, and the two groups of the transmission mechanism (18) and the connecting strips (26) correspond to each other one by one; the movable door (2) and the fixed door (1) form a telescopic structure, the bottom end of the movable door (2) is fixed with a pulley bar (27) by screws, and the lower surface of the fixed door (1) is fixed with a pulley groove (32) by screws, the pulley bar (27) is arranged on the inner side of the pulley groove (32), and the pulley bar (27) and the pulley groove (32) form a sliding structure;An electric push rod (28) is fixed to the inner side of the fixed box (12) by screws, and the output end of the electric push rod (28) is rotatably connected to a bracket (29) via a hinge shaft, and connecting shafts (30) are provided at both ends of the bracket (29), and both ends of the connecting shaft (30) are rotatably connected to the inner wall of the fixed box (12) via bearings, and the bracket (29) and the fixed box (12) form a rotating structure via the connecting shaft (30), and a sleeve (31) is welded on the upper surface of the bracket (29), and the number of the sleeves (31) is two groups, and the two groups of the sleeves (31) are arranged at the two ends of the gear (15), and both ends of the gear (15) are rotatably connected to the sleeve (31) via a rotating shaft. ; 2. The maintenance-friendly opening and closing mechanism for a bus screen door according to claim 1, characterized in that: One end of the inspection door (3) is rotatably connected to the inner wall of the fixed door (1) via a rotating shaft, and a lock is installed at the other end of the inspection door (3), and the other end of the inspection door (3) is connected and fixed to the fixed door (1) via the lock.

3. The maintenance-friendly opening and closing mechanism for a bus platform screen door according to claim 1, characterized in that: The lower surface of the first fixed track (5) is a toothed structure, the lower surface structures of the connecting track (6) and the second fixed track (7) are the same as the lower surface structure of the first fixed track (5), the lower surface of the first fixed track (5) is meshed with the top end of the gear (15), and the first fixed track (5) and the gear (15) form a movable structure.

4. The maintenance-friendly opening and closing mechanism for a bus platform screen door according to claim 1, characterized in that: The fixing strip (8) is inserted into the guide groove (21); the outer surface structure of both sides of the second fixing rail (7) is the same as the outer surface structure of both sides of the connecting rail (6); the outer surface structure of both sides of the connecting rail (6) is the same as the outer surface structure of both sides of the first fixing rail (5); the outer surfaces of both sides of the first fixing rail (5), the connecting rail (6) and the second fixing rail (7) are all provided with fixing strips (8) and slide grooves (9), and each set of fixing strips (8) and slide grooves (9) are connected end to end.

5. The maintenance-friendly opening and closing mechanism for a bus platform screen door according to claim 1, characterized in that: The transmission mechanism (18) comprises a fixed frame (181), a guide wheel (182) and a fixed sleeve (183). The guide wheels (182) are evenly arranged on the inner side of the fixed frame (181), and the upper and lower ends of the guide wheels (182) are rotatably connected to the inner wall of the fixed frame (181) via a rotating shaft. A fixed sleeve (183) is welded on the outer surface of the rear end of the fixed frame (181). The shape of the inner wall of the fixed sleeve (183) matches the shape of the outer surface of the connecting strip (26). The outer surface of the connecting strip (26) is in a "T"-shaped structure. The connecting strip (26) is plugged into the fixed sleeve (183). The bottom end of the fixed frame (181) is connected and fixed to the inner wall of the fixed door (1) via screws.

6. The maintenance-friendly opening and closing mechanism for a bus platform screen door according to claim 1, characterized in that: The connection mechanism (25) comprises a connection block (251), a sleeve (252), a connecting sleeve (253) and a spring (254); the connection block (251) is in a "U"-shaped structure; one end of the connection block (251) is connected and fixed to the second fixed track (7) by means of screws; the other end of the connection block (251) is provided with a sleeve (252) on the inner side; the inner side of the sleeve (252) is provided with a connecting sleeve (253) and a spring (254); one end of the connecting sleeve (253) is in a "T"-shaped structure; the outer surface shape of one end of the connecting sleeve (253) matches the inner wall shape of the sleeve (252); the other end of the connecting sleeve (253) is in a hemispherical structure.

7. The maintenance-friendly opening and closing mechanism for a bus platform screen door according to claim 6, characterized in that: One end of the clamping pile (24) is connected and fixed to the outer surface of one end of the connecting track (6) by means of a screw, and the other end of the clamping pile (24) is in a spherical structure. The clamping pile (24) is engaged with the connecting sleeve (253). The outer surface of one end of the connecting track (6) is in a concave structure. The concave portion of the connecting track (6) matches the shape of the outer surface of the connecting block (251). The clamping pile (24) is arranged in the concave portion of the connecting track (6). The left outer surface structure of the connecting track (6) is the same as the left outer surface structure of the second fixed track (7). The right outer surface structure of the first fixed track (5) is the same as the right outer surface structure of the connecting track (6).

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