Sliding plug door bearing driving mechanism

Abstract

The utility model discloses a sliding plug door bearing and driving mechanism which comprises a bearing beam and a driving mechanism, rolling bearings and supporting idler wheels are arranged at the two ends of the bearing beam, two linear guide rails which are arranged in an up-down staggered mode are installed on the bearing beam, and the two linear guide rails are connected with a left upper guide rail and a right upper guide rail respectively. The left upper guide rail and the right upper guide rail are respectively connected with the left door carrying frame and the right door carrying frame; the driving mechanism comprises a driving motor and a lead screw which are connected with each other, and the lead screw drives a lead screw nut and a transmission plate to move along the lead screw; the lead screw nut is provided with a lock fork assembly, and the lock fork assembly is provided with a pressure spring. The linear guide rails and the end rolling bearings which are arranged in an up-down staggered mode are used for bearing, the structure is simple, space is saved, efficiency and stability are higher, and the problems of howling, shaking and the like are avoided; and by additionally arranging a limit on each of the left and right sides, the locking reliability of the door system is improved, the structure is simple and convenient, and maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit door system field especially, relates to a plug door bearing drive mechanism. BACKGROUND

[0002] At present, the passenger room door of subway and intercity vehicle usually adopts plug door form. The bearing drive system is used for the bearing of plug door and realizes the opening and closing action of door and guarantees the movement precision of door. The existing plug door bearing drive mechanism has some problems in actual application, such as insufficient locking mechanism, not enough stable operation, howling and shaking problem in the operation process of door system. With the continuous increase of subway operation speed and passenger flow, the performance requirement of passenger room door is also higher and higher, so a more efficient, stable and reliable plug door bearing drive mechanism is needed. UTILITY MODEL CONTENT

[0003] The utility model discloses a plug door bearing drive mechanism, which is simple in structure, saves space, more efficient and stable, avoids howling and shaking problems, improves the locking reliability of door system by adding a limiting part on each of the left and right sides, and is simple in structure and convenient to maintain.

[0004] Technical scheme: the plug door bearing drive mechanism of the utility model is characterized by comprising a bearing beam and a drive mechanism, the bearing beam is provided with rolling bearings and supporting rollers at both ends, the bearing beam is provided with two linear guides arranged in an upper and lower staggered manner, the two linear guides are connected with a left upper guide and a right upper guide respectively, and the left upper guide and the right upper guide are connected with a left door frame and a right door frame respectively; the drive mechanism comprises a drive motor and a screw rod connected with each other, the screw rod drives a screw nut and a transmission plate to move along the screw rod; the screw nut is provided with a lock fork assembly, and the lock fork assembly is provided with a compression spring.

[0005] The screw rod is provided with a limiting structure at both ends.

[0006] The limiting structure comprises a connecting rod, one end of the connecting rod is connected with the bearing beam, and the other end of the connecting rod is provided with a roller.

[0007] The roller is located in the notch of the side bracket.

[0008] The outer end surface of the connecting rod on one side of the roller is in contact with a limiting disc installed at the end of the screw rod.

[0009] The transmission plate is provided with a roller body, and the roller body is sleeved in the left upper guide and the right upper guide.

[0010] The supporting roller is in contact with the bracket at both ends of the mechanism.

[0011] The left door frame and the right door frame are connected with the door leaf respectively.

[0012] Beneficial effects: Compared with the prior art, the utility model has the following remarkable advantages: the utility model is borne by the linear guide rail and the end rolling bearing arranged up and down, simple structure, save space, more efficient and stable, avoid the problem of howling, shaking and the like, and increase one limit on the left and right sides, improve the locking reliability of the door system, and the structure is simple and convenient to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic view of the utility model;

[0014] Figure 2 It is a structure schematic view of the utility model's plug door mechanism two sides locking structure;

[0015] In the drawing, 101 is the left door frame; 102 is the right door frame; 103 is the left upper guide rail; 104 is the right upper guide rail; 105 is the linear guide rail; 106 is the transmission plate; 107 is the bearing beam; 108 is the driving mechanism; 109 is the driving motor; 1010 is the screw rod; 1011 is the screw rod nut; 1012 is the side bracket; 1013 is the limit disc; 1014 is the connecting rod; 1015 is the roller. DETAILED DESCRIPTION

[0016] The technical scheme of the utility model will be further described below in combination with the drawings and specific embodiments.

[0017] The plug door bearing driving mechanism of the utility model, including bearing beam 107 and driving mechanism 108, bearing beam 107 both ends are equipped with rolling bearing and support roller, bearing beam 107 is installed with 2 linear guide rails 105 arranged up and down staggeredly, 2 linear guide rails 105 are connected with left upper guide rail 103 and right upper guide rail 104 respectively, left upper guide rail 103 and right upper guide rail 104 are connected with left door frame 101 and right door frame 102 respectively; Driving mechanism 108 includes driving motor 109 and screw rod 1010 connected with each other, screw rod 1010 drives screw rod nut 1011 and transmission plate 106 to move along screw rod 1010; Screw rod nut 1011 is equipped with lock fork assembly, and compression spring is arranged on the lock fork assembly. Bearing beam 107 is installed with two linear guide rails 105, two linear guide rails 105 are arranged up and down staggeredly, bearing beam 107 both ends are further installed with rolling bearing and support roller, support roller contacts with mechanism both ends support, prevents bearing beam 107 from moving along X direction.

[0018] The utility model discloses a screw rod 1010 both ends are equipped with limit structure. Limit structure includes connecting rod 1014, and connecting rod 1014 one end is connected with the bearing beam 107, and connecting rod 1014 other end is equipped with gyro wheel 1015. Gyro wheel 1015 is located in the notching of side support 1012. The outer end surface of connecting rod 1014 of gyro wheel 1015 one side is in contact with the limit disc 1013 installed in the end of screw rod 1010. Transmission plate 106 is equipped with gyro wheel body, and gyro wheel body is sleeved in left upper guide rail 103, right upper guide rail 104, and in the process of switching door, gyro wheel body rolls along guide rail. The support gyro wheel is in contact with the support of both ends of mechanism. Left door frame 101 and right door frame 102 are connected with door leaf respectively.

[0019] When using, in the process of switching door, drive motor 109 drives screw rod 1010 to drive door leaf to move along linear guide rail 105 in X direction, and moves along with bearing beam 107 in Y direction, under the constraint of upper guide rail, realizes the action of pulling and pushing. In the process of door leaf movement, under the constraint of upper slide (left upper guide rail 103, right upper guide rail 104), moves along linear guide rail 105 in X direction, and moves along with bearing beam 107 in Y direction, realizes the action of pulling and pushing. Bearing drive mechanism adopts motor + screw rod transmission, in the last stage of door leaf closing, drive motor 109 drives screw rod 1010 to drive screw rod nut 1011 and transmission plate 106 to rotate, forms over dead point locking.

[0020] Mechanism is also installed with lock fork assembly, and compression spring is installed on lock fork assembly, and under the action of compression spring, lock fork is in reset state, and lock fork assembly is rotated in the process of screw rod nut 1011 over dead point locking, and after rotating in place, compression spring reversely presses lock fork, and plays the role of positioning. When door system is unlocked, screw rod 1010 drives screw rod nut 1011 to rotate reversely, and over dead point locking of screw rod 1010, screw rod nut 1011 and transmission frame is released. Meanwhile, screw rod nut 1011 and transmission frame hinged shaft drive lock fork of transmission mechanism to rotate reversely and further drive the rotation of inner swing arm in side locking assembly, and the locking state of side locking device is released. After that, the door system can be opened electrically. After lock fork reversely rotates in place, under the action of compression spring, reset state is kept, and the next door closing is waited.

[0021] Bearing drive mechanism is increased with one limit structure after door closing on both sides, and connecting rod 1014 is installed on the end, one end of connecting rod 1014 is installed on bearing beam 107, and the other end is equipped with gyro wheel 1015 and can slide in the notching of side support 1012, and in the action of pulling and pushing segment of door closing, connecting rod 1014 follows bearing beam 107 and moves in Y direction, and the outer end surface of connecting rod 1014 of gyro wheel 1015 one side and limit disc 1013 installed in the end of screw rod 1010 form contact compression fit, thereby realizing the limiting function of mechanism after door closing.

Claims

1. A sliding door support drive mechanism, characterized in that: The system includes a load-bearing beam (107) and a drive mechanism (108). The load-bearing beam (107) has rolling bearings and support rollers at both ends. Two linear guide rails (105) are installed on the load-bearing beam (107) in an alternating pattern. The two linear guide rails (105) are connected to the upper left guide rail (103) and the upper right guide rail (104) respectively. The upper left guide rail (103) and the upper right guide rail (104) are connected to the left carrying gantry (101) and the right carrying gantry (102) respectively. The drive mechanism (108) includes a drive motor (109) and a lead screw (1010) connected to each other. The lead screw (1010) drives the lead screw nut (1011) and the transmission plate (106) to move along the lead screw (1010). The lead screw nut (1011) is provided with a locking fork assembly, and the locking fork assembly is provided with a compression spring.

2. The sliding door support drive mechanism according to claim 1, characterized in that: The lead screw (1010) is provided with limiting structures at both ends.

3. The sliding door support drive mechanism according to claim 2, characterized in that: The limiting structure includes a connecting rod (1014), one end of which is connected to the bearing beam (107), and the other end of which is provided with a roller (1015).

4. The sliding door support drive mechanism according to claim 3, characterized in that: The roller (1015) is located in the slot of the side bracket (1012).

5. The sliding door support drive mechanism according to claim 3, characterized in that: The outer end face of the connecting rod (1014) on one side of the roller (1015) contacts the limiting plate (1013) installed at the end of the lead screw (1010).

6. The sliding door support drive mechanism according to claim 1, characterized in that: The transmission plate (106) is provided with roller bodies, which are sleeved in the upper left guide rail (103) and the upper right guide rail (104).

7. The sliding door support drive mechanism according to claim 1, characterized in that: The supporting rollers are in contact with the brackets at both ends of the mechanism.

8. The sliding door support drive mechanism according to claim 1, characterized in that: The left carrying gantry (101) and the right carrying gantry (102) are respectively connected to the door leaf.

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