Double-opening sliding plug door

Abstract

The invention discloses a double-opening sliding plug door which comprises a bearing driving mechanism, a vertical synchronous rod, a lower swing arm, a door leaf and a doorsill. The bearing driving mechanism and the end locking structure are located on the upper portion of the door system, the door leaf is connected with the bearing driving mechanism through the door carrying frame, the vertical synchronizing rod is located on the side portion of the door system, the upper portion of the vertical synchronizing rod is connected with the bearing driving mechanism, the lower portion of the vertical synchronizing rod is connected with the lower swing arm, and the threshold is located on the lower portion of the door system. On the basis of middle locking constraint of an existing mechanism, two-end constraint is added, the bearing capacity of the mechanism is greatly improved, meanwhile, through connection of the mechanism and the side face synchronous rod, installation interfaces of a vehicle are reduced, and the side face locking constraint effect is improved; an additional power source is not needed, and the device has the characteristics of simple structure, low cost, small occupied space, convenience in installation and maintenance and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit door system, and particularly relates to a double-leaf sliding plug door. BACKGROUND

[0002] The sliding plug door system of the rail vehicle is widely applied to the subway and intercity vehicles. With the increase of the speed level, the air pressure load borne by the door leaf is increased accordingly, and the bearing strength requirement of the door system is higher. In order to realize the requirement of the high speed level, the existing solution usually increases the locking constraint points on the side of the door leaf on the basis of the mechanism locking constraint, so as to improve the bearing performance of the vehicle door system.

[0003] The existing bearing drive mechanism of the double-leaf sliding plug door is usually located in the middle of the mechanism when the door system is locked, and can lock the left and right door leaves at the same time. However, with the increase of the air pressure load, the deformation of the door system on both sides is gradually increased, which affects the sealing performance of the door system. With the increase of the deformation, the middle locking constraint is also at the risk of being unlocked, which affects the safety performance of the vehicle. The usual solution is to increase the locking device on the side of the door system to constrain the deformation of the door leaf. However, the existing side locking solution usually needs an additional power source, such as air source and power source, and has the problems of complex structure, high cost, large space occupation, and difficult installation and maintenance. At the same time, the existing side locking solution is usually fixed on the vehicle, and needs the vehicle to provide an additional installation interface.

[0004] Therefore, it is necessary to develop a new double-leaf sliding plug door structure to overcome the above problems. SUMMARY

[0005] The present application provides a double-leaf sliding plug door, which increases the constraint at both ends on the basis of the middle locking constraint of the existing mechanism, greatly improves the bearing capacity of the mechanism, and reduces the installation interface of the vehicle by connecting the mechanism with the side synchronous rod, thereby improving the side locking constraint effect. The double-leaf sliding plug door does not need an additional power source, has the characteristics of simple structure, low cost, small space occupation, and convenient installation and maintenance.

[0006] Technical scheme: The double-leaf sliding plug door of the present application is characterized in that it comprises a bearing drive mechanism, a vertical synchronous rod, a lower swing arm, a door leaf and a door sill. The bearing drive mechanism and the end locking structure are located on the upper part of the door system, the door leaf is connected with the bearing drive mechanism through a door carrying frame, the vertical synchronous rod is located on the side of the door system, the upper part of the vertical synchronous rod is connected with the bearing drive mechanism, the lower part of the vertical synchronous rod is connected with the lower swing arm, and the door sill is located on the lower part of the door system.

[0007] The vertical synchronous rod is provided with a synchronous rod, a driving connecting rod, a connecting bracket and a lock hook.

[0008] The upper part of the vertical synchronous rod is hung on the bearing driving mechanism through a guide shaft, the vertical synchronous rod is connected with the moving part of the bearing driving mechanism through a driving link, and horizontal sliding movement of the door leaf is converted into rotary movement through the driving link; the lock hook is located on the upper part of the synchronous rod and cooperates with a lock seat on the door leaf, and the lock and unlock of the door system are realized through the rotary movement of the vertical synchronous rod.

[0009] The lower part of the vertical synchronous rod is guided on the mounting bracket of the lower swing arm, the fixed bracket of the lower swing arm is connected with the vehicle body, the lower swing arm is located on the lower part of the synchronous rod, the lower swing arm is provided with a roller, the movement of the vertical synchronous rod drives the movement of the lower swing arm, so as to drive the movement of the lower part of the door leaf, and the door leaf is limited on the locking position during locking.

[0010] The bearing driving mechanism is provided with a screw rod, a mechanism bearing beam, a fixed point, a bearing wheel, a bearing guide rail, a fixed block, a door carrying frame, a limiting structure, a nut sleeve, an intermediate locking structure, a guide groove, a limiting swing arm and a limiting block.

[0011] The bearing driving mechanism is driven by a motor, the motor drives the rotation of the screw rod, the nut sleeve matched with the screw rod rotates around the screw rod and moves along the axial direction of the screw rod, the nut sleeve and the door carrying frame are connected through an intermediate bracket, and the door carrying frame is connected with the door leaf; the rotary movement of the nut sleeve around the screw rod is converted into the movement of the door carrying frame in the Y direction, so as to realize the sliding action of the door leaf; the movement of the nut sleeve along the axial direction of the screw rod realizes the opening and closing action of the door leaf; the bearing wheel rolls on the bearing guide rail; and the fixed point is the connecting fixed point of the vertical synchronous rod.

[0012] When the door system moves to the locking position, the lock fork structure of the intermediate locking structure is brought to the locking position by the nut sleeve, so as to limit the displacement of the nut sleeve in the Y direction, realize the locking of the intermediate point of the bearing driving mechanism, the door system is provided with four locking points, including the locking point of the intermediate of the bearing driving mechanism, the locking points of the two ends of the bearing driving mechanism, the locking point of the upper part of the vertical synchronous rod and the locking point of the lower swing arm; the limiting swing arm is connected and fixed with the mechanism bearing beam, the end of the limiting swing arm moves along the guide groove, when moving to the locking position, the limiting block fixed with the screw rod simultaneously moves to the locking position, the movement of the limiting swing arm is limited, so as to limit the movement of the mechanism bearing beam, and multi-point locking is realized.

[0013] The vertical synchronous rod is connected and fixed with the mechanism bearing beam through a connecting bracket, the driving link is provided with two rotatable joints, one end of the driving link is connected with the connecting bracket, the other end of the driving link is connected with the lock hook, the vertical synchronous rod limits the movement of the door leaf through the lock hook, and the vertical synchronous rod is connected with the lower swing arm through a synchronous rod and transmits rotary movement and driving torque.

[0014] The door leaf is provided with a locking device and a lower slide, when the door leaf moves to the closed position, the locking hook moves to the locking position at the same time, and the movement of the door system is limited by hooking the locking device on the door leaf, so that the upper locking point of the door leaf is locked.

[0015] The lower swing arm is connected and fixed with the synchronous rod, the vertical synchronous rod sleeve is arranged on the fixed support, the roller of the lower swing arm cooperates with the lower slide of the door leaf to play a guiding and limiting role, when the door system is located in the non-locking position, the lower swing arm moves at the same time with the door leaf through the roller, when the door system is locked, the rotation of the lower swing arm is limited by the vertical synchronous rod, so that the opening and closing movement of the door leaf is limited, and the lower limiting and locking of the door system are realized.

[0016] Advantages: compared with the prior art, the present application has the following remarkable advantages: the present application increases the constraint of both ends on the basis of the middle locking constraint of the existing mechanism, greatly improves the carrying capacity of the mechanism, simultaneously reduces the installation interface of the vehicle through the connection of the mechanism and the side synchronous rod, improves the side locking constraint effect, does not need an additional power source, has the characteristics of simple structure, low cost, small occupied space, convenient installation and maintenance and the like. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present application;

[0018] Figure 2 It is a structural schematic diagram of the carrying driving mechanism of the present application;

[0019] Figure 3 It is a locking schematic diagram of the carrying driving mechanism of the present application;

[0020] Figure 4 It is an end locking schematic diagram of the carrying driving mechanism of the present application;

[0021] Figure 5 It is a principle diagram of the end locking of the carrying driving mechanism of the present application;

[0022] Figure 6 It is a structural schematic diagram of the vertical synchronous rod of the present application;

[0023] Figure 7 It is a schematic diagram of the upper arm locking structure of the vertical synchronous rod of the present application;

[0024] Figure 8 It is a structural schematic diagram of the lower swing arm of the present application;

[0025] Figure 1 is a bearing drive mechanism; 2 is a vertical synchronous rod; 3 is a lower swing arm; 4 is a door leaf; 5 is a door sill. 101 is a lead screw; 102 is a mechanism bearing beam; 103 is a fixed point; 104 is a bearing wheel; 105 is a bearing rail; 106 is a fixed block; 107 is a door carrier; 108 is a limiting structure; 109 is a nut sleeve; 110 is an intermediate locking structure; 111 is a guide groove; 112 is a limiting swing arm; 113 is a limiting block; 201 is a synchronous rod; 202 is a drive link; 203 is a connecting bracket; 204 is a lock hook; 301 is a mounting bracket; 302 is a roller; 303 is a fixed bracket; 401 is a lock catch device; 402 is a lower slide. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be further described below in combination with the drawings and specific embodiments.

[0027] As shown in the figure, the double-leaf sliding door of the present application comprises a bearing drive mechanism 1, a vertical synchronous rod 2, a lower swing arm 3, a door leaf 4 and a door sill 5; the bearing drive mechanism 1 is located at the upper part of the door system, the door leaf 4 is connected with the bearing drive mechanism 1 through the door carrier 107, the vertical synchronous rod 2 is located at the side part of the door system, the upper part of the vertical synchronous rod 2 is connected with the bearing drive mechanism 1, the lower part of the vertical synchronous rod 2 is connected with the lower swing arm 3, and the door sill 5 is located at the lower part of the door system. Among them, the vertical synchronous rod 2 is provided with a synchronous rod 201, a drive link 202, a connecting bracket 203 and a lock hook 204. The upper part of the vertical synchronous rod 2 is suspended on the bearing drive mechanism 1 through a guide shaft, the vertical synchronous rod 2 is connected with the moving part of the bearing drive mechanism 1 through the drive link 202, and the horizontal sliding movement of the door leaf 4 is converted into rotary movement through the drive link 202; the lock hook 204 is located at the upper part of the synchronous rod 201 and cooperates with the lock seat on the door leaf 4, and the locking and unlocking of the door system is realized through the rotary movement of the vertical synchronous rod 2. The lower part of the vertical synchronous rod 2 is guided on the mounting bracket 301 of the lower swing arm 3, the fixed bracket 303 of the lower swing arm 3 is connected with the external vehicle body, the lower swing arm 3 is located at the lower part of the synchronous rod 201, the lower swing arm 3 is provided with a roller 302, the movement of the vertical synchronous rod 2 drives the movement of the lower swing arm 3, thereby driving the movement of the lower part of the door leaf 4, and the door leaf 4 is limited at the locking position when locked.

[0028] The bearing drive mechanism 1 is as follows Figure 2As shown, the bearing driving mechanism 1 is provided with a screw rod 101, a mechanism bearing beam 102, a fixed point 103, a bearing wheel 104, a bearing guide rail 105, a fixed block 106, a door carrying frame 107, a limiting structure 108, a nut sleeve 109, an intermediate locking structure 110, a guide groove 111, a limiting swing arm 112 and a limiting block 113; the bearing driving mechanism 1 is driven by a motor, the motor drives the screw rod 101 to rotate, the nut sleeve 109 matched with the screw rod 101 rotates around the screw rod 101 and moves along the axial direction of the screw rod, the nut sleeve 109 and the door carrying frame 107 are connected through an intermediate support, the door carrying frame 107 is connected with the door leaf 4; the rotating movement of the nut sleeve 109 around the screw rod 101 is converted into the movement of the door carrying frame 107 along the Y direction, so as to realize the sliding action of the door leaf 4; the movement of the nut sleeve 109 along the axial direction of the screw rod realizes the opening and closing action of the door leaf 4; the bearing wheel 104 rolls on the bearing guide rail 105; the fixed point 103 is a connecting fixed point of the vertical synchronous rod 2.

[0029] The door system of the present application is provided with four locking points, including the locking point in the middle of the bearing driving mechanism 1, the locking points at both ends of the bearing driving mechanism 1, the locking point at the upper part of the vertical synchronous rod 2 and the locking point of the lower swing arm 3.

[0030] As shown in the figure, Figure 3 When the door system moves to the locking position, the locking fork structure of the intermediate locking structure 110 is brought to the locking position by the nut sleeve 109, so as to limit the displacement of the nut sleeve 109 in the Y direction, and realize the locking of the middle point of the bearing driving mechanism 1.

[0031] The end locking structure is shown in the figure, Figure 4 The limiting swing arm 112 is connected and fixed with the mechanism bearing beam 102 and can rotate around the fixed point, the end of the limiting swing arm 112 moves along the guide groove 111, and when it moves to the locking position, the limiting block 113 fixed with the screw rod 101 moves to the locking position at the same time, limiting the movement of the limiting swing arm 112, so as to limit the movement of the mechanism bearing beam 102, and realize multi-point locking.

[0032] As shown in the figure, Figure 6 The vertical synchronous rod 2 is connected and fixed with the mechanism bearing beam 102 through the connecting support 203, the driving link 202 is provided with two rotatable joints, one end of the driving link 202 is connected with the connecting support 203, the other end of the driving link 202 is connected with the lock hook 204, the vertical synchronous rod 2 limits the movement of the door leaf 4 through the lock hook 204, and the vertical synchronous rod 2 is connected with the lower swing arm 3 through the synchronous rod 201 and transmits the rotary movement and driving torque.

[0033] The upper locking structure of the vertical synchronous rod 2 is shown in the figure, Figure 7As shown, the connecting bracket 203 is connected and fixed with the bearing beam 102, the two ends of the driving link 202 are connected with the connecting bracket 203 and the lock hook 204 respectively, and are rotatable at the connecting position. The lock hook 204 is fixed with the synchronous rod 201, the fixed bracket 205 is connected and fixed with the fixed point 103 of the bearing driving mechanism 1, and the other end is connected with the synchronous rod 201, and the synchronous rod 201 can rotate around the center. When the door leaf 4 is closed, that is, the mechanism bearing beam 102 moves in the horizontal Y direction, the bearing beam 102 drives the driving link 202 to move, and converts the horizontal sliding action of the door system into the rotary motion of the lock hook 204 around the center of the synchronous rod 201. The door leaf 4 is provided with a lock catch device 401 and a lower slide 402, when the door leaf 4 moves to the closed position, the lock hook 204 simultaneously moves to the locked position, and hooks the lock catch device 401 on the door leaf 4 to limit the movement of the door system, so as to realize the locking of the upper locking point of the door leaf 4.

[0034] The lower swing arm 3 limiting structure is as shown in the figure Figure 8 As shown, the lower swing arm 3 is connected and fixed with the synchronous rod 201, the vertical synchronous rod 2 is sleeved on the fixed bracket 303 and can rotate around the center, and the lower swing arm fixed bracket 303 is fixed with the vehicle body through screws. The roller 302 of the lower swing arm 3 cooperates with the lower slide 402 of the door leaf 4 to play a guiding and limiting role; when the door system is in a non-locked position, the lower swing arm 3 moves simultaneously with the door leaf 4 through the roller 302; when the door system is locked, the lower swing arm 3 is limited to rotate by the vertical synchronous rod 2, so as to limit the opening and closing movement of the door leaf 4, and realize the limiting and locking of the lower part of the door system.

[0035] The fixed bracket 303 is connected with the external vehicle body through screws, the door carrying frame 107 is connected with the door leaf 4 through screws, and the limiting block 113 is located on the limiting structure 108.

[0036] When the system is used, the bearing driving mechanism bearing bracket is installed and fixed on the vehicle body, the whole mechanism is hung on the vehicle body, the bearing bracket is provided with a horizontal movement guide groove for installing the bearing beam and the like, the bearing beam is connected with the door leaf through the door carrying frame to realize the sliding action of the door system. Meanwhile, an end locking guide groove is provided and is located near the screw rod of the bearing driving mechanism, so that when the door system is in a locked position, the limiting block on the screw rod limits the end locking structure in the locked position. The vertical synchronous rod is located on both sides of the door system, the upper part is connected and fixed with the mechanism, and the lower part is connected and fixed with the lower swing arm fixed seat, and the lower swing arm fixed seat is fixed on the vehicle body. The lock hook is located on the upper side of the vertical synchronous rod, and hooks the lock catch device on the vehicle door when locked.

[0037] The present application increases the constraints at both ends on the basis of the existing mechanism middle locking constraint, greatly improves the bearing capacity of the mechanism, simultaneously connects the mechanism with the side synchronous rod to reduce the installation interface of the vehicle, improves the side locking constraint effect, does not need an additional power source, has the characteristics of simple structure, low cost, small space occupation, convenient installation and maintenance and the like.

Claims

1. A double-acting sliding door, characterized in that: Including bearing drive mechanism (1), vertical synchronous rod (2), lower swing arm (3), door leaf (4) and door sill (5); The bearing drive mechanism (1) is located in the upper portion of door system, and the door leaf (4) is connected with the bearing drive mechanism (1) through the door carrying frame (107), the vertical synchronous rod (2) is located in the side portion of door system, the upper portion of the vertical synchronous rod (2) is connected with the bearing drive mechanism (1), the lower portion of the vertical synchronous rod (2) is connected with the lower swing arm (3), and the door sill (5) is located in the lower portion of door system.

2. Double-leaf sliding door according to claim 1, characterized in that The vertical synchronous rod (2) is provided with a synchronous rod (201), a drive connecting rod (202), a connecting bracket (203) and a lock hook (204).

3. Double-leaf sliding door according to claim 2, characterized in that: The upper portion of the vertical synchronous rod (2) is hung on the bearing drive mechanism (1) through a guide shaft, the vertical synchronous rod (2) is connected with the movement part of the bearing drive mechanism (1) through the drive connecting rod (202), and horizontal sliding motion of the door leaf (4) is converted into rotary motion through the drive connecting rod (202); the lock hook (204) is located on the upper portion of the synchronous rod (201) and is matched with the lock seat on the door leaf (4), and the locking and unlocking of the door system are realized through the rotary motion of the vertical synchronous rod (2).

4. The double-leaf sliding door according to claim 2, characterized in that: The lower portion of the vertical synchronous rod (2) is guided on the mounting bracket (301) of the lower swing arm (3), the fixed bracket (303) of the lower swing arm (3) is connected with the external vehicle body, the lower swing arm (3) is located on the lower portion of the synchronous rod (201), the lower swing arm (3) is provided with a roller (302), the movement of the vertical synchronous rod (2) drives the movement of the lower swing arm (3), so as to drive the movement of the lower portion of the door leaf (4), and the door leaf (4) is limited on the locking position when locking.

5. The double-leaf sliding door according to claim 1, characterized in that: The bearing drive mechanism (1) is provided with a screw rod (101), a mechanism bearing beam (102), a fixed point (103), a bearing wheel (104), a bearing guide rail (105), a fixed block (106), a door carrying frame (107), a limiting structure (108), a nut sleeve (109), an intermediate locking structure (110), a guide groove (111), a limiting swing arm (112) and a limiting block (113).

6. Double-leaf sliding door according to claim 5, characterized in that: The bearing drive mechanism (1) is driven by a motor, the motor drives the rotation of the screw rod (101), the nut sleeve (109) matched with the screw rod (101) rotates around the screw rod (101) and moves along the axial direction of the screw rod, the nut sleeve (109) and the door carrying frame (107) are connected through an intermediate bracket, and the door carrying frame (107) is connected with the door leaf (4); the rotary motion of the nut sleeve (109) around the screw rod (101) is converted into the movement of the door carrying frame (107) in the Y direction, so as to realize the sliding action of the door leaf (4); the movement of the nut sleeve (109) along the axial direction of the screw rod realizes the opening and closing action of the door leaf (4); the bearing wheel (104) rolls on the bearing guide rail (105); and the fixed point (103) is a connecting fixed point of the vertical synchronous rod (2).

7. Double-leaf sliding door according to claim 6, characterized in that When the door system moves to the locking position, the locking fork structure of the intermediate locking structure (110) is brought to the locking position by the nut sleeve (109), thereby limiting the displacement of the nut sleeve (109) in the Y direction, achieving the locking of the intermediate point of the bearing driving mechanism (1); the door system is provided with four locking points, including the locking point of the intermediate of the bearing driving mechanism (1), the locking point of the two ends of the bearing driving mechanism (1), the locking point of the upper part of the vertical synchronous rod (2), and the locking point of the lower swing arm (3); the limiting swing arm (112) is connected and fixed with the mechanism bearing beam (102), the end of the limiting swing arm (112) moves along the guide groove (111), and when it moves to the locking position, the limiting block (113) fixedly connected with the screw rod (101) also moves to the locking position, limiting the movement of the limiting swing arm (112), thereby limiting the movement of the mechanism bearing beam (102), and achieving multi-point locking.

8. The double-leaf sliding door according to claim 2, characterized in that: The vertical synchronous rod (2) is connected and fixed with the mechanism bearing beam (102) through the connecting support (203), the driving connecting rod (202) is provided with two rotatable joints, one end of the driving connecting rod (202) is connected with the connecting support (203), and the other end of the driving connecting rod (202) is connected with the locking hook (204); the vertical synchronous rod (2) limits the movement of the door leaf (4) through the locking hook (204), and the vertical synchronous rod (2) is connected with the lower swing arm (3) through the synchronous rod (201) and transmits the rotary movement and driving torque.

9. The double-leaf sliding door according to claim 1, characterized in that: The door leaf (4) is provided with the locking device (401) and the lower slide (402), when the door leaf (4) moves to the closed position, the locking hook (204) also moves to the locking position, and the movement of the door system is limited by hooking the locking device (401) on the door leaf (4), thereby achieving the locking of the upper locking point of the door leaf (4).

10. The double-leaf sliding door according to claim 1, characterized in that: The lower swing arm (3) is connected and fixed with the synchronous rod (201), the vertical synchronous rod (2) is sleeved on the fixed support (303), the roller (302) of the lower swing arm (3) cooperates with the lower slide (402) of the door leaf (4) to play a guiding and limiting role; when the door system is in the non-locking position, the lower swing arm (3) moves simultaneously with the door leaf (4) through the roller (302); when the door system is locked, the lower swing arm (3) is limited to rotate by the vertical synchronous rod (2), thereby limiting the opening and closing movement of the door leaf (4), and achieving the limiting and locking of the lower part of the door system.

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