Transmission device for railway vehicle door

Abstract

The utility model provides a transmission device for a rail vehicle door, and belongs to the technical field of rail transit. According to the device, two sets of parallel transverse sliding rails are arranged on one side of a cross beam, a first door plank sliding block and a second door plank sliding block which are the same in structure are arranged on the two transverse sliding rails in a sliding mode correspondingly, a transversely-placed driving motor is fixed to the end of the other side of the cross beam, and an output shaft of the driving motor is rotationally connected with a driving lead screw through a coupler; a driving wheel is coaxially fixed to the driving lead screw, a driven lead screw parallel to the driving lead screw is arranged on one side of the driving lead screw, a driven wheel matched with the driving wheel is coaxially fixed to the driven lead screw, a first lead screw sliding seat is connected to the driving lead screw in a lead screw mode, and a second lead screw sliding seat is connected to the driven lead screw in a lead screw mode. The first lead screw sliding seat is fixedly connected with the first door plate sliding block through an upper connecting plate, and the second lead screw sliding seat is fixedly connected with the second door plate sliding block through a lower connecting plate. The device has the advantages of being simple in structure, small in occupied space, easy to overhaul and maintain and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rail transit technical field, especially point to a kind of transmission for rail vehicle door. BACKGROUND

[0002] At present, bolt drive, toothed belt drive and other modes are widely used on rail vehicles, such as various vehicle doors and shield doors. Most of the spiral drives, especially double-leaf door products, use single-wire rod drives. The transmission mechanism occupies a large space, the product is difficult to process, and it is difficult to disassemble, overhaul and maintain.

[0003] CN108979416B discloses a double-leaf sliding door system, which includes a cylinder, a linkage mechanism, a first door and a second door matched with each other, a pair of optical axes are provided above the first door and the second door, the two optical axes are arranged in parallel relative to each other, the first door is slidably connected with one of the optical axes, and the second door is slidably connected with the other optical axis. The cylinder is connected with the first door and is used to drive the first door to slide along the corresponding optical axis. The first door and the second door are both connected with the linkage mechanism, so that the first door and the second door can move towards each other and move away from each other under the drive of the cylinder. The cylinder and the pair of optical axes are used to realize the opening and closing of the double-leaf door of the vehicle. However, the length of the cylinder in the double-leaf sliding door system is equal to the stroke length of the sliding door, so the overall length of the cylinder is relatively large and occupies a long space. SUMMARY

[0004] The utility model aims to provide a kind of transmission for rail vehicle door, it combines the characteristics of door system, and it is small to occupy space and it is time-saving and convenient to maintain.

[0005] The utility model is realized as follows:

[0006] A kind of transmission for rail vehicle door, including crossbeam, the side of crossbeam is provided with two groups of parallel transverse slide rails, and the same structure first door plate slider and second door plate slider are slid respectively on two transverse slide rails, the end of the other side of crossbeam is fixed with the driving motor placed transversely, the output shaft of driving motor is rotatably connected with driving screw through coupling, driving screw is coaxially fixed with driving wheel on driving screw, the side of driving screw is provided with parallel driven screw, driven screw is coaxially fixed with driven wheel matched with the driving wheel on driven screw, first screw rod slide is connected on driving screw, second screw rod slide is connected on driven screw, the first screw rod slide is fixedly connected with first door plate slider by upper connecting plate, and second screw rod slide is fixedly connected with second door plate slider by lower connecting plate, when driving the driving motor, the first screw rod slide and second screw rod slide move towards each other or move away from each other, and first door plate slider and second door plate slider move towards each other or move away from each other synchronously.

[0007] The utility model further sets up, the end of crossbeam is fixed with screw rod fixed base, the upper of screw rod fixed base is provided with screw rod hole that is equipped with with the initiative screw rod and driven screw rod.

[0008] The utility model further sets up, the side cover of screw rod fixed base is equipped with gear cover, gear cover is provided with the through -hole that corresponds with two screw rod, gear cover is fixedly connected with screw rod fixed base through bolt.

[0009] The utility model further sets up, the end of crossbeam is provided with screw rod support for initiative screw rod and driven screw rod end support.

[0010] The utility model further sets up, the screw rod thread direction of initiative screw rod and driven screw rod is identical.

[0011] The utility model further sets up, the cross section of the retainer in two lateral slide rails is " C " type, and a plurality of ball bearings are uniformly distributed on the upper and lower sidewalls of the retainer.

[0012] The utility model further sets up, the top of the sliding block and the end of the upper connecting plate are both provided with a plurality of teeth for mutual engagement.

[0013] The utility model has the advantages of the following:

[0014] 1、 the transmission device provided by the utility model, the form of driving motor control gear is adopted to drive two screw rods to move in opposite directions, thereby greatly reducing the occupied space of the driving mechanism, and the size of the door mechanism is effectively reduced.

[0015] 2、 the utility model further sets up screw rod fixed base, which provides support for the initiative screw rod and the driven screw rod, and keeps the ends of the two screw rods stable during driving of the driving motor.

[0016] 3、 the utility model sets up a gear cover on the screw rod fixed base, which effectively protects the two gears and serves as a gear box, facilitating oil injection and enabling long-term use.

[0017] 4, the transverse slide rail can provide the clamping of the upper and lower ends of the moving sliding block by the retainer, so that the sliding block is not easy to fall off from the transverse slide rail in the sliding process; in addition, the door plate assembly plate is fixed in the mode of bolts, so that the door plate can move synchronously with the door plate assembly plate, and good fixing effect can be maintained. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the utility model;

[0019] Figure 2 is a structural schematic view of the screw rod fixing seat of the utility model;

[0020] Figure 3 is an explosion schematic view of the first door plate sliding block of the utility model;

[0021] REFERENCE SIGNS:

[0022] 1-beam; 10-transverse slide rail; 11-screw rod support; 12-retainer; 120-ball;

[0023] 2-first door plate sliding block; 20-sliding block; 21-door plate assembly plate; 22-bite

[0024] 3-second door plate sliding block;

[0025] 4-driving motor; 40-output shaft;

[0026] 5-coupling;

[0027] 6-driving screw rod; 60-driving wheel; 61-first screw rod sliding seat; 62-upper connecting plate;

[0028] 7-following screw rod; 70-following wheel; 71-second screw rod sliding seat; 72-lower connecting plate;

[0029] 8-screw rod fixing seat; 80-screw rod hole; 81-gear cover; 82-through hole. DETAILED DESCRIPTION

[0030] The utility model will be further described in conjunction with the specific embodiment with reference to the drawings, Figure 1 — Figure 3 :

[0031] The utility model provides a transmission device for rail vehicle door, including crossbeam 1, one side of crossbeam 1 is provided with two groups of parallel transverse slide rail 10, and the first door panel slider 2 and the second door panel slider 3 of same structure are respectively slid on two transverse slide rail 10, the end of the other side of crossbeam 1 is fixed with the transversely placed drive motor 4, and the output shaft 40 of drive motor 4 is rotatably connected with driving screw 6 through coupling 5, and driving screw 6 is coaxially fixed with driving wheel 60, one side of driving screw 6 is provided with parallel driven screw 7, and driven screw 7 is coaxially fixed with driven wheel 70 matched with driving wheel 60, and the first screw rod sliding seat 61 of driving screw 6 is connected with the second screw rod sliding seat 71 of driven screw 7, the first door panel slider 2 is fixedly connected with the first screw rod sliding seat 61 through upper connecting plate 62, and the second door panel slider 3 is fixedly connected with the second screw rod sliding seat 71 through lower connecting plate 72, when driving drive motor 4, the first screw rod sliding seat 61 and the second screw rod sliding seat 71 move towards each other or move away from each other, and the first door panel slider 2 and the second door panel slider 3 move towards each other or move away from each other synchronously.

[0032] Specific implementation process is that the output shaft 40 is driven to rotate by drive motor, and driving screw is driven to rotate through coupling, and driving wheel 60 on driving screw rotates synchronously, and driven wheel 70 matched with driving wheel 60 rotates, and the rotation of driven wheel drives the rotation of driven screw 7.When the above-mentioned two screws rotate, the rotation directions of the two screws are opposite, the first screw rod sliding seat and the second screw rod sliding seat move towards each other or move away from each other, thereby driving the first door panel slider and the second door panel slider to move towards each other or move away from each other, and the two door panels are fixed with the two door panel sliders, realizing the opening and closing of the two doors in the rail vehicle door system.

[0033] In the above implementation process, the structure of the overall driving part is relatively simple, effectively shortens the movement space, so that the vehicle door mechanism occupies small space. For later inspection, maintenance is more convenient, greatly improves the reliability and maintainability of the product.

[0034] In addition, assembly holes are formed in the door panel sliders for fixing the rail vehicle door panels by pins.

[0035] Preferably, the end of the crossbeam 1 is fixed with a screw rod fixing seat 8, and the screw rod fixing seat 8 is provided with a screw rod hole 80 through which the driving screw 6 and the driven screw 7 pass.

[0036] Further, the form of the screw rod fixing seat 8 not only provides support for the ends of the driving screw and the driven screw, but also facilitates the abutting of the end gears. The screw rod fixing seat is fixed by two or more bolts at the end, and the screw rod fixing seat 8 is in the form of a corner bracket, which is easy for the ends of the screws to protrude, so that they do not wear the crossbeam when rotating.

[0037] Preferably, one side cover of the screw rod fixing seat 8 is provided with a gear cover 81, the gear cover 81 is provided with a through hole 82 corresponding to the two screw rods, and the gear cover 81 is fixedly connected with the screw rod fixing seat 8 through bolts.

[0038] The gear cover 81 can wrap the two gears and form a gear box structure, which facilitates adding oil to the gears, reduces wear, and prevents the gears from falling off in the axial direction.

[0039] In addition, the middle part of the gear is provided with a key groove, which is fixed on the screw rod by a pin key, so that the gear can rotate synchronously and ensure normal transmission.

[0040] Preferably, the end of the cross beam 1 is provided with a screw rod support 11 for supporting the end of the driving screw rod 6 and the driven screw rod 7. The screw rod support 11 at the end is also fixed by bolts and also extends to support the ends of the driving screw rod and the driven screw rod.

[0041] Preferably, the screw rod threads of the driving screw rod 6 and the driven screw rod 7 are in the same direction.

[0042] In the actual movement process, the first screw rod sliding seat 61 and the second screw rod sliding seat 71 are in opposite positions, that is, during driving, the two screw rod sliding seats move towards each other. During assembly, the two screw rod sliding seats cannot be placed in the corresponding positions, so that the normal movement trajectory of the door panel cannot be realized.

[0043] Preferably, the two lateral sliding rails 10 are each provided with a retainer 12 with a "C" shaped cross section, and a plurality of balls 120 are uniformly distributed on the upper and lower sidewalls of the retainer 12. The first door panel sliding block 2 includes a sliding block 20 with a "C" shaped embedding groove on the upper and lower ends, which is adapted to the end face of the ball 120. The front side of the sliding block 20 is fixedly provided with a door panel assembly plate 21 through bolts, and the top of the door panel assembly plate 21 is fixedly connected to the end of the upper connecting plate 62 through bolts.

[0044] In the above structure, the retainer 12 is the sliding interval of the sliding block 20, and a certain limiting component is arranged at both ends of the lateral sliding rail to fix the retainer 12 or prevent it from sliding out of both ends of the lateral sliding rail. The sliding block moves with the driving of the connecting plate. Since there are a plurality of balls, the friction during sliding is small, and it is not easy to cause jamming.

[0045] In addition, the sliding block structure connected by the upper connecting plate and the lower connecting plate is similar. In the actual assembly process, the middle part of the upper connecting plate has a certain arched structure to prevent friction with the top of the cross beam. Similarly, the lower connecting plate also has such a design to ensure normal sliding.

[0046] Preferably, the top of the sliding block 20 and the end of the upper connecting plate 62 are provided with toothed edges 22 for mutual engagement.

[0047] In the above structure, the end of the lower connecting plate and the end of the upper connecting plate are provided with toothed edges, which not only can provide greater friction, but also can provide greater contact area when the bolt is fixed, and the toothed edges are not easy to rotate after engagement, so that the screw slide pushes the connecting plate more accurately and efficiently.

[0048] As shown in Figure 1 the first door panel slider is at the leftmost end, the second door panel slider is at the rightmost end, the first door panel slider controls the corresponding right door panel, the second door panel slider controls the corresponding left door panel, and the left and right door panels are in a closed state. When opening the door, the first door panel slider moves to the right, and the corresponding right door panel moves to the right; similarly, the left door panel is synchronously pushed to the left, achieving the effect of synchronous opening.

[0049] The above embodiments are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A transmission for a rail vehicle door, characterized in that, The utility model provides a door panel driving device, including crossbeam (1), one side of crossbeam (1) is provided with two groups of parallel transverse slide rail (10), and the structure of first door panel sliding block (2) and second door panel sliding block (3) is same and is slid respectively on two transverse slide rail (10), and the end of the other side of crossbeam (1) is fixed with transversely placed drive motor (4), and the output shaft (40) of drive motor (4) is rotatably connected with driving screw rod (6) through coupling (5), and driving screw rod (6) is coaxially fixed with driving wheel (60), and one side of driving screw rod (6) is provided with parallel driven screw rod (7), and driven screw rod (7) is coaxially fixed with driven wheel (70) matched with driving wheel (60), and driving screw rod (6) is connected with first screw rod sliding seat (61) on screw rod, and driven screw rod (7) is connected with second screw rod sliding seat (71) on screw rod, and first screw rod sliding seat (61) is fixedly connected with first door panel sliding block (2) through upper connecting plate (62), and second screw rod sliding seat (71) is fixedly connected with second door panel sliding block (3) through lower connecting plate (72), when drive drive motor (4), first screw rod sliding seat (61) and second screw rod sliding seat (71) move towards each other or move away from each other, and first door panel sliding block (2) and second door panel sliding block (3) move towards each other or move away from each other synchronously.

2. A transmission for a railway vehicle door according to claim 1, characterized in that, The end of the crossbeam (1) is fixed with a screw rod fixing seat (8), and the screw rod hole (80) is formed in the screw rod fixing seat (8) for the driving screw rod (6) and the driven screw rod (7).

3. A transmission for a railway vehicle door according to claim 2, characterized in that, The side of the screw rod fixing seat (8) is covered with a gear cover (81), and the through hole (82) corresponding to the two screw rods is formed in the gear cover (81), and the gear cover (81) is fixedly connected with the screw rod fixing seat (8) through bolts.

4. A transmission for a railway vehicle door according to claim 2, characterized in that, The end of the crossbeam (1) is provided with a screw rod support (11) for supporting the ends of the driving screw rod (6) and the driven screw rod (7).

5. A transmission for a railway vehicle door according to claim 1, characterized in that, The screw rod threads of the driving screw rod (6) and the driven screw rod (7) are in the same direction.

6. A transmission for a railway vehicle door according to claim 1, characterized in that, The two transverse slide rails (10) are provided with a cage (12) with a "C" shaped cross section, and a plurality of balls (120) are uniformly distributed on the upper and lower sidewalls of the cage (12).

7. A transmission for a railway vehicle door according to claim 6, characterized in that, The top of the sliding block (20) and the end of the upper connecting plate (62) are provided with a tooth (22) for mutual engagement. The top of the sliding block (20) and the end of the upper connecting plate (62) are provided with a tooth (22) for mutual engagement.

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