Transmission device for railway vehicle door

Abstract

The invention 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 invention belongs to the technical field of rail transportation, and in particular relates to a transmission device for rail vehicle doors. Background Art

[0002] At present, bolt transmission and toothed belt transmission are widely used in rail vehicles, such as various vehicle doors and shield doors. As for the screw transmission, most of the double-leaf door products adopt single-screw transmission, which has the disadvantages of large space occupied by the transmission mechanism, high difficulty in product processing, difficult disassembly and maintenance, and unchanged maintenance.

[0003] CN108979416B discloses a double-opening plug sliding door system, which includes a cylinder, a linkage mechanism, a first door and a second door that match each other, a pair of optical axes are provided above the first door and the second door, the two optical axes are arranged relatively parallel, the first door is slidably connected to one of the optical axes, and the second door is slidably connected to the other optical axis, the cylinder is connected to the first door, and is used to drive the first door to slide along the axial direction of the corresponding optical axis, the first door and the second door are both connected to the linkage mechanism, so that the first door and the second door can move toward and away from each other under the drive of the cylinder. The opening and closing of the double doors of the vehicle are realized in the form of a cylinder and a pair of optical axes. However, the length of the cylinder in this double plug sliding door system is the stroke length of the plug sliding door, so the overall length of the cylinder is required to be relatively large, and it will still occupy a relatively long usage space. Summary of the invention

[0004] The object of the present invention is to provide a transmission device for rail vehicle doors, which combines the characteristics of a door system, occupies a small space and is time-saving and convenient to maintain.

[0005] The object of the present invention is achieved in that:

[0006] The transmission device for a rail vehicle door comprises a crossbeam, and one side of the crossbeam is provided with two sets of parallel cross rails, and the two cross rails are respectively slidably provided with a first door panel slider and a second door panel slider of the same structure. The end of the other side of the crossbeam is fixed with a transversely placed driving motor, and the output shaft of the driving motor is rotatably connected with an active screw rod through a coupling, and a driving wheel is coaxially fixed on the active screw rod. A parallel driven screw rod is provided on one side of the active screw rod, and a driven wheel adapted to the driving wheel is coaxially fixed on the driven screw rod, the upper screw rod of the active screw rod is connected with a first screw rod slide, and the upper screw rod of the driven screw rod is connected with a second screw rod slide, the first screw rod slide is fixedly connected to the first door panel slider through an upper connecting plate, and the second screw rod slide is fixedly connected to the second door panel slider through a lower connecting plate. When the driving motor is driven, the first screw rod slide and the second screw rod slide move toward or away from each other, and the first door panel slider and the second door panel slider move toward or away from each other synchronously.

[0007] The present invention is further configured such that a screw fixing seat is fixed to the end of the cross beam, and a screw hole for penetrating the active screw and the driven screw is formed on the screw fixing seat.

[0008] The present invention is further configured such that a side cover of the screw rod fixing seat is provided with a gear cover, the gear cover is provided with through holes corresponding to the two screw rods, and the gear cover is fixedly connected to the screw rod fixing seat by bolts.

[0009] The present invention is further configured such that a screw support for supporting the ends of the active screw and the driven screw is provided at the end of the cross beam.

[0010] The present invention is further configured such that the active screw and the driven screw have the same screw thread direction.

[0011] The present invention is further configured such that a retaining frame with a "C"-shaped cross-section is provided in each of the two transverse slide rails, and a plurality of ball bearings are evenly distributed on the upper and lower side walls of the retaining frame. The first door panel slider includes a sliding block with "C"-shaped grooves matching the end faces of the ball bearings at both upper and lower ends. A door panel assembly plate is fixed to the front side of the sliding block by bolts, and the top of the door panel assembly plate is fixed to the end of the upper connecting plate by bolts.

[0012] The present invention is further configured such that the top of the sliding block and the end of the upper connecting plate are both provided with teeth for engaging with each other.

[0013] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0014] 1. The transmission device provided by the present invention adopts the form of a driving motor controlling a gear to drive two screw rods to move in different directions, thereby greatly reducing the space occupied by the driving mechanism and effectively reducing the size of the door mechanism, making it easier to assemble and disassemble the product, making it more convenient to inspect and maintain it in the later stage, and greatly improving the reliability of the product.

[0015] 2. The present invention further provides a screw fixing seat to provide support convenience for the active screw and the driven screw, and at the same time allows the driving motor to keep the ends of the two screws stable during the driving process; the screw bracket further provided can provide stable support for the ends of the two screws.

[0016] 3. The present invention arranges a gear cover on the screw fixing seat to effectively protect the two gears and at the same time serves as a gear box body, facilitating the injection of oil and enabling long-term use.

[0017] 4. The transverse slide rail provided by the present invention can use a retaining frame to clamp the upper and lower ends of the moving sliding block, so that it is not easy to fall off from the transverse slide rail during the sliding process; in addition, the door panel assembly plate is fixed with bolts, so that the door panel can move synchronously with the door panel assembly plate, while maintaining a good fixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the screw rod fixing seat of the present invention;

[0020] Figure 3 is an exploded schematic diagram of a first door panel slider of the present invention;

[0021] Reference numerals:

[0022] 1- crossbeam; 10- horizontal slide rail; 11- screw support; 12- cage; 120- ball bearing;

[0023] 2-first door panel slider; 20-sliding block; 21-door panel assembly plate; 22-biting teeth

[0024] 3- Second door panel slider;

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

[0026] 5-Coupling;

[0027] 6-active screw rod; 60-active wheel; 61-first screw rod slide; 62-upper connecting plate;

[0028] 7-driven screw rod; 70-driven wheel; 71-second screw rod slide; 72-lower connecting plate;

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

[0030] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1 — Figure 3 :

[0031] A transmission device for rail vehicle doors, comprising a crossbeam 1, two sets of parallel transverse slide rails 10 are arranged on one side of the crossbeam 1, a first door panel slider 2 and a second door panel slider 3 with the same structure are slidably arranged on the two transverse slide rails 10, a transversely placed drive motor 4 is fixed to the end of the other side of the crossbeam 1, an output shaft 40 of the drive motor 4 is rotatably connected to a driving screw 6 through a coupling 5, a driving wheel 60 is coaxially fixed to the driving screw 6, a parallel driven screw 7 is arranged on one side of the driving screw 6, a driving wheel 60 is coaxially fixed to the driven screw 7 The driven wheel 70 is adapted to the driving wheel 60, the upper screw rod of the driving screw 6 is connected to the first screw rod slide 61, the upper screw rod of the driven screw 7 is connected to the second screw rod slide 71, the first screw rod slide 61 is fixedly connected to the first door panel slider 2 through the upper connecting plate 62, and the second screw rod slide 71 is fixedly connected to the second door panel slider 3 through the lower connecting plate 72. When the driving motor 4 is driven, the first screw rod slide 61 and the second screw rod slide 71 move toward or away from each other, and the first door panel slider 2 and the second door panel slider 3 move toward or away from each other synchronously.

[0032] The specific implementation process is that the output shaft 40 is driven to rotate by the driving motor, and the driving screw is driven to rotate through the coupling, and the driving wheel 60 on the driving screw rotates synchronously. The driven wheel 70 meshing with the driving wheel 60 rotates, and the rotating driven wheel drives the driven screw 7 to rotate. When the two screws rotate, the rotation directions of the two screws are different, and the first screw slide and the second screw slide realize the movement towards or away from each other, thereby also driving the first door panel slider and the second door panel slider to move towards or away from each other, and the two door panels are fixed to 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, which effectively shortens the movement space and makes the door mechanism occupy less space. It is more convenient for later inspection and maintenance, greatly improving the reliability and maintainability of the product.

[0034] In addition, the door panel slider is provided with an assembly hole for fixing the rail vehicle door panel with a pin shaft.

[0035] Preferably, a screw fixing seat 8 is fixed to the end of the cross beam 1 , and a screw hole 80 is opened on the screw fixing seat 8 for penetrating the active screw 6 and the driven screw 7 .

[0036] Furthermore, the screw fixing seat 8 adopted not only provides support convenience for the active screw and the driven screw ends, but also facilitates the abutment of the end gears. The screw fixing seat adopts two or more bolts to fix the ends, and the screw fixing seat 8 is in the form of an angle bracket, which is easy to extend the screw end, so that it will not wear the crossbeam when it rotates.

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

[0038] The gear cover 81 is capable of wrapping the two gears and forming a gear box structure, which is convenient for adding oil to the gears to reduce wear and tear, and prevents the gears from falling off in the axial direction.

[0039] In addition, a keyway is opened in the middle of the gear and fixed to the screw rod with a pin key so that it can rotate synchronously to ensure normal transmission.

[0040] Preferably, the ends of the crossbeam 1 are provided with screw supports 11 for supporting the ends of the active screw 6 and the driven screw 7. The screw supports 11 at the ends are also fixed by bolts and are also extended to support the ends of the active screw and the driven screw.

[0041] Preferably, the active screw rod 6 and the driven screw rod 7 have the same screw thread direction.

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

[0043] Preferably, both of the transverse slide rails 10 are provided with a retaining frame 12 with a "C"-shaped cross-section, and a plurality of ball bearings 120 are evenly distributed on the upper and lower side walls of the retaining frame 12. The first door panel slider 2 includes a sliding block 20 with "C"-shaped grooves that are adapted to the end faces of the ball bearings 120 at both upper and lower ends. The front side of the sliding block 20 is fixed with a door panel assembly plate 21 by bolts, and the top of the door panel assembly plate 21 is fixed to the end of the upper connecting plate 62 by bolts.

[0044] In the above structure, the retaining frame 12 is the sliding range of the sliding block 20, and certain limiting components are set at both ends of the transverse slide rail to keep the retaining frame 12 fixed or prevent it from being scratched from the two ends of the transverse slide rail. The slider moves with the drive of the connecting plate. Since it is a plurality of ball bearings, the friction during the sliding process is small and it is not easy to get stuck.

[0045] In addition, the slider structure connected to the upper connecting plate is similar to that of the lower connecting plate. During the actual assembly process, the middle part of the upper connecting plate has a certain arch structure to prevent friction on the top of the 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 both provided with teeth 22 for engaging with each other.

[0047] In the above structure, bite teeth are provided at the ends of the lower connecting plate and the upper connecting plate, which can not only provide greater friction, but also provide a larger contact area when the bolts are fixed. It is not easy to rotate after biting, and the screw slide pushes the connecting plate more accurately and efficiently.

[0048] like Figure 1 As shown, in this state, the first door panel slider is at the leftmost end, the second door panel slider is at the rightmost end, and the first door panel slider controls the corresponding right door panel in practice, and the second door panel slider controls the corresponding left door panel in practice, that is, 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 pushed to the left at the same time to achieve the effect of synchronous opening.

[0049] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A transmission device for a rail vehicle door, characterized in that: The invention comprises a crossbeam (1), one side of the crossbeam (1) is provided with two sets of parallel transverse slide rails (10), the two transverse slide rails (10) are respectively provided with a first door panel slider (2) and a second door panel slider (3) of the same structure, the end of the other side of the crossbeam (1) is fixed with a transversely placed driving motor (4), the output shaft (40) of the driving motor (4) is rotatably connected with a driving screw (6) through a coupling (5), a driving wheel (60) is coaxially fixed on the driving screw (6), a parallel driven screw (7) is provided on one side of the driving screw (6), a coaxially fixed drive wheel (60) is coaxially fixed on the driven screw (7) and a drive wheel (60) is coaxially fixed on the driven screw (7). ), the upper screw of the active screw (6) is connected to a first screw slide (61), the upper screw of the driven screw (7) is connected to a second screw slide (71), the first screw slide (61) is fixedly connected to the first door panel slider (2) via an upper connecting plate (62), the second screw slide (71) is fixedly connected to the second door panel slider (3) via a lower connecting plate (72), when the driving motor (4) is driven, the first screw slide (61) and the second screw slide (71) move towards or away from each other, and the first door panel slider (2) and the second door panel slider (3) move towards or away from each other synchronously.

2. A transmission device for a rail vehicle door according to claim 1, characterized in that: A screw rod fixing seat (8) is fixed at the end of the cross beam (1), and a screw rod hole (80) is provided on the screw rod fixing seat (8) for penetrating the active screw rod (6) and the driven screw rod (7).

3. A transmission device for a rail vehicle door according to claim 2, characterized in that: A gear cover (81) is provided on one side cover of the screw rod fixing seat (8). Through holes (82) corresponding to the two screw rods are opened on the gear cover (81). The gear cover (81) is fixedly connected to the screw rod fixing seat (8) by bolts.

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

5. The transmission device for a rail vehicle door according to claim 1, characterized in that: The active screw rod (6) and the driven screw rod (7) have the same screw thread direction.

6. The transmission device for a rail vehicle door according to claim 1, characterized in that: A retaining frame (12) with a "C"-shaped cross-section is provided in each of the two transverse slide rails (10), and a plurality of balls (120) are evenly distributed on the upper and lower side walls of the retaining frame (12). The first door panel slider (2) includes a sliding block (20) with "C"-shaped grooves adapted to the end faces of the balls (120) at both upper and lower ends. A door panel assembly plate (21) is fixed to the front side of the sliding block (20) by bolts, and the top of the door panel assembly plate (21) is fixed to the end of the upper connecting plate (62) by bolts.

7. A transmission device for a rail 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 both provided with teeth (22) for interlocking.

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