Linear guide rail halving three-folding car door device

Abstract

The invention belongs to the technical field of elevators and discloses a linear guide rail center-divided three-fold car door device which comprises a body, a double-R inner guide rail, a double-R middle guide rail and a linear guide rail are horizontally fixed to the lower portion of the body from inside to outside, and a left slow door assembly and a right slow door assembly are clamped to the left side and the right side of the double-R inner guide rail respectively. A left middle door assembly and a right middle door assembly are clamped to the left side and the right side of the double-R middle guide rail respectively. A left shutter assembly and a right shutter assembly are clamped to the left side and the right side of the linear guide rail respectively. A left slow linkage assembly and a right slow linkage assembly are arranged on the left slow door assembly and the right slow door assembly respectively; a left middle linkage assembly and a right middle linkage assembly are arranged on the left middle door assembly and the right middle door assembly respectively; the left shutter assembly and the right shutter assembly are jointly connected to the main linkage assembly. The left shutter assembly is fixedly connected with the door plate driving assembly through the door knife. The operation stability, smoothness and safety are greatly improved, high linkage synchronization accuracy is achieved, and later installation and debugging are facilitated.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and in particular to a three-fold car door device with a linear guide rail. Background Technology

[0002] Currently, in the field of elevator technology, the car door, as a key component for interaction between the elevator and passengers, directly affects the user experience and safety performance of the elevator due to its operational stability, safety, and smoothness. With the increasing prevalence of high-rise buildings and the technological upgrade of the elevator industry, the center-parted three-fold car door, due to its advantages such as large opening width and small space occupation in the shaft, is widely used in various types of elevator equipment.

[0003] However, existing three-fold sedan door systems still have many technical drawbacks: Firstly, the guide rail design is unreasonable, often using a single type of guide rail or ordinary sliding guide rail, which makes the shutter, medium shutter, and slow shutter components prone to shaking and jamming during operation. In particular, the medium shutter and slow shutter components are noisier during opening and closing due to uneven force transmission. Secondly, the linkage mechanism design is imperfect, relying heavily on gear meshing, chain drive or simple rope connection, resulting in poor linkage synchronization and low transmission efficiency. This can easily lead to asynchronous opening and closing of the door panels and insufficient positioning accuracy. Furthermore, it is difficult to debug after installation and it is hard to ensure uniform door gaps. Third, the door panel is not stable enough. The traditional door panel length design is unreasonable and the fit gap is too large. When it encounters resistance during operation, it is easy to tilt, which causes the door gap to widen instantly, posing a safety hazard. Fourth, some components have limited wear resistance and load capacity. After long-term use, the guide rails wear out and the linkage components loosen, which can easily lead to deformation, frequent failures, and other problems, affecting the elevator's service life and operational reliability. Summary of the Invention

[0004] The purpose of this invention is to provide a linear guide rail three-fold car door device, which features smooth operation, precise linkage, safety and reliability, and convenient installation and debugging, and can meet the elevator industry's demand for high-performance car doors.

[0005] To achieve the above objectives, the present invention provides a three-fold car door device with a linear guide rail, comprising a main body. A double-R inner guide rail, a double-R middle guide rail, and a linear guide rail are horizontally fixed from the inside out below the main body. A left slow shutter assembly and a right slow shutter assembly are respectively engaged on the left and right sides of the double-R inner guide rail. A left middle door assembly and a right middle door assembly, engaged on the left and right sides of the double-R middle guide rail, are installed between the left and right slow shutter assemblies. A left fast shutter assembly and a right fast shutter assembly, engaged on the left and right sides of the linear guide rail, are installed between the left and right middle door assemblies. The left and right slow shutter assemblies are respectively provided with a left slow shutter linkage assembly and a right slow shutter linkage assembly, both fixed to the body on the inside and connected to the left and right middle shutter assemblies on the outside respectively; the left and right middle shutter assemblies are respectively provided with a left middle linkage assembly and a right middle linkage assembly, both fixed to the left and right middle shutter assemblies on the inside and connected to the left and right shutter assemblies on the outside respectively; the left and right shutter assemblies are connected to a main linkage assembly, which is fixed to the body; a door knife is fixedly connected to the left shutter assembly, and the door knife is connected and fixed to a door panel drive assembly fixed to the body.

[0006] Preferably, the left shutter assembly includes a left shutter slide that is snapped onto the linear guide rail, and a left shutter plate is fixedly connected to the bottom of the left shutter slide; the right shutter assembly includes a right shutter slide that is snapped onto the linear guide rail, and a right shutter plate is fixedly connected to the bottom of the right shutter slide; the shutter blade is fixedly connected above the left shutter slide. The left middle door assembly includes a left middle door slide plate that is snapped onto the double R middle guide rail, and a left middle door panel is fixedly connected to the bottom of the left middle door slide plate; the right middle door assembly includes a right middle door slide plate that is snapped onto the double R middle guide rail, and a right middle door panel is fixedly connected to the bottom of the right middle door slide plate. The left slow shutter assembly includes a left slow shutter slide that is snapped onto the double-R inner guide rail, and a left slow shutter plate is fixedly connected to the bottom of the left slow shutter slide; the right slow shutter assembly includes a right slow shutter slide that is snapped onto the double-R inner guide rail, and a right slow shutter plate is fixedly connected to the bottom of the right slow shutter slide. The bottoms of the left slow shutter panel, right slow shutter panel, left middle shutter panel, right middle shutter panel, left fast shutter panel, and right fast shutter panel are all engaged within the sill.

[0007] Preferably, the door panel drive assembly includes a door control motor fixed at one side above the main body, a driven wheel fixed on the main body is mounted on the opposite side of the door control motor, a synchronous belt is sleeved between the wheel of the door control motor and the driven wheel, a riveting shaft is mounted on the inner side of the door knife, a connecting clamp matching the riveting shaft is mounted on the synchronous belt, and a door machine controller is connected to the door control motor.

[0008] Preferably, the main linkage assembly includes two large rope pulleys that are vertically fixed at the left and right ends of the main body, respectively. Large steel wire ropes are fitted on the two large rope pulleys. Both sides of the left shutter slide are fixedly connected to the large steel wire rope located above, and both sides of the right shutter slide are fixedly connected to the large steel wire rope located below.

[0009] Preferably, the connection end of the large steel wire rope to the left or right shutter slide is configured as a first long screw, and the first long screw is provided with a first fastening screw that is engaged with the corresponding slide.

[0010] Preferably, the left-center linkage assembly includes two first left small rope pulleys horizontally installed at the left and right ends of the left-center door slide plate, a first left small steel wire rope is sleeved between the two first left small rope pulleys, the inner side of the first left small steel wire rope is fixed to the left-center door slide plate by a first left pressure block, and the outer side of the first left small steel wire rope is fixedly connected to the left shutter slide plate. The right-center linkage assembly includes two first right small rope pulleys horizontally installed at the left and right ends of the right center door slide plate. A first right small steel wire rope is sleeved between the two first right small rope pulleys. The inner side of the first right small steel wire rope is fixed to the right center door slide plate by a first right pressure block, and the outer side of the first right small steel wire rope is fixedly connected to the right shutter slide plate.

[0011] Preferably, the connection end between the first left small steel wire rope and the left shutter slide is configured as a second long screw, and the second long screw is provided with a second fastening screw that is engaged with the left shutter slide; The connection end between the first right small steel wire rope and the right shutter slide is set as a third long screw, and the third long screw is provided with a third fastening screw that is engaged with the right shutter slide.

[0012] Preferably, the left slow linkage assembly includes two second left small rope pulleys horizontally installed at the left and right ends of the left slow shutter slide plate, a second left small steel wire rope is sleeved between the two second left small rope pulleys, the inner side of the second left small steel wire rope is fixed to the body by a second left pressure block, and the outer side of the second left small steel wire rope is fixedly connected to the top of the left middle shutter slide plate. The right slow linkage assembly includes two second right small rope pulleys horizontally installed at the left and right ends of the right slow shutter slide plate. A second right small steel wire rope is sleeved between the two second right small rope pulleys. The inner side of the second right small steel wire rope is fixed to the body by a second right pressure block, and the outer side of the second right small steel wire rope is fixedly connected to the top of the right middle shutter slide plate.

[0013] Preferably, the connection end between the second left small steel wire rope and the left middle door slide is set as a fourth long screw, and the fourth long screw is provided with a fourth fastening screw that is engaged with the left middle door slide; The connection end between the second right small steel wire rope and the right middle door slide is set as a fifth long screw, and the fifth long screw is provided with a fifth fastening screw that is snapped onto the right middle door slide.

[0014] Preferably, both the left and right shutter slides are equipped with sliding wheels that fit snugly against the bottom of the linear guide rail.

[0015] Therefore, the present invention adopts the above-mentioned linear guide rail three-fold car door device, which greatly improves the stability, smoothness and safety of operation, and has high linkage synchronization accuracy, and is also convenient for later installation and debugging.

[0016] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a front view structural schematic diagram of an embodiment of a three-fold sedan door device in a linear guide rail according to the present invention; Figure 2 This is a side view of an embodiment of a three-fold sedan door device in a linear guide rail according to the present invention; Figure 3 This is a schematic diagram of the left-side linkage mode of an embodiment of a three-fold sedan door device in a linear guide rail according to the present invention; Figure 4 This is a schematic diagram of the right-side linkage method of an embodiment of a three-fold sedan door device in a linear guide rail according to the present invention.

[0018] Figure Labels 1. Main body; 2. Door operator controller; 3. Door control motor; 4. Driven wheel; 5. Synchronous belt; 6. Connecting clamp; 7. Door knife; 8. Left shutter slide; 9. Left shutter plate; 10. Right shutter slide; 11. Right shutter plate; 12. Left middle door slide; 13. Left middle door plate; 14. Right middle door slide; 15. Right middle door plate; 16. Left slow shutter slide; 17. Left slow shutter plate; 18. Right slow shutter slide; 19. Right slow shutter plate; 20. Sill; 21. Linear guide rail; 2. Double R center guide rail; 23. Double R inner guide rail; 24. Large rope pulley; 25. Large steel wire rope; 26. First left small rope pulley; 27. First left small steel wire rope; 28. First left pressure block; 29. ​​First right small rope pulley; 30. First right small steel wire rope; 31. First right pressure block; 32. Second left small rope pulley; 33. Second left small steel wire rope; 34. Second left pressure block; 35. Second right small rope pulley; 36. Second right small steel wire rope; 37. Second right pressure block; 38. Lower pulley. Detailed Implementation

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] Example 1: like Figure 1 and Figure 2 As shown, this invention provides a three-fold car door device with a linear guide rail, including a body 1. From the inside out, a double-R inner guide rail 23, a double-R middle guide rail 22, and a linear guide rail 21 are horizontally fixed to the lower part of the body 1. A left slow shutter assembly and a right slow shutter assembly are respectively engaged on the left and right sides of the double-R inner guide rail 23, allowing the left and right slow shutter assemblies to slide left and right along the double-R inner guide rail 23. A left middle door assembly and a right middle door assembly are installed between the left and right slow shutter assemblies, engaged on the left and right sides of the double-R middle guide rail 22, allowing the left and right middle door assemblies to slide left and right along the double-R middle guide rail 22. A left shutter assembly and a right shutter assembly are installed between the left and right middle door assemblies, engaged on the left and right sides of the linear guide rail 21, allowing the left and right shutter assemblies to slide left and right along the linear guide rail 21.

[0022] The left slow shutter assembly and the right slow shutter assembly are respectively provided with a left slow linkage assembly and a right slow linkage assembly, which are both fixed on the body 1 on the inside and connected to the left middle shutter assembly and the right middle shutter assembly on the outside. The left slow shutter assembly can be linked with the left middle shutter assembly through the left slow linkage assembly, and the right slow shutter assembly can be linked with the right middle shutter assembly through the right slow linkage assembly.

[0023] The left and right center shutter components are respectively provided with a left-center linkage component and a right-center linkage component, which are fixed on the left and right center shutter components on the inside and connected to the left and right shutter components on the outside. The left center shutter component can be linked with the left shutter component through the left-center linkage component, and the right center shutter component can be linked with the right shutter component through the right-center linkage component.

[0024] The left and right shutter components are connected to the main linkage component, which is fixed to the main body 1. The linkage between the left and right shutter components can be achieved through the driving action of the main linkage component.

[0025] A door knife 7 is fixedly connected to the left shutter assembly. The door knife 7 is connected and fixed to the door panel drive assembly fixed on the main body 1. The door panel drive assembly provides driving force to the door knife 7, which drives the left shutter assembly to slide actively, thereby driving the right shutter assembly to operate in conjunction. At the same time, it drives the left middle door assembly and the right middle door assembly to perform linkage actions. Then, the left middle door assembly and the right middle door assembly drive the left slow shutter assembly and the right slow shutter assembly to perform linkage actions, ultimately realizing the door opening and closing control.

[0026] The specific structure is as follows: The left shutter assembly includes a left shutter slide 8 that is snapped onto the linear guide rail 21, and a left shutter plate 9 is fixedly connected to the bottom of the left shutter slide 8; the right shutter assembly includes a right shutter slide 10 that is snapped onto the linear guide rail 21, a right shutter plate 11 is fixedly connected to the bottom of the right shutter slide 10, and a shutter blade 7 is fixedly connected above the left shutter slide 8.

[0027] The left middle door assembly includes a left middle door slide plate 12 that is snapped onto the double R middle guide rail 22, and a left middle door panel 13 is fixedly connected to the bottom of the left middle door slide plate 12; the right middle door assembly includes a right middle door slide plate 14 that is snapped onto the double R middle guide rail 22, and a right middle door panel 15 is fixedly connected to the bottom of the right middle door slide plate 14.

[0028] The left slow shutter assembly includes a left slow shutter slide 16 that is snapped onto the double-R inner guide rail 23, and a left slow shutter plate 17 is fixedly connected to the bottom of the left slow shutter slide 16; the right slow shutter assembly includes a right slow shutter slide 18 that is snapped onto the double-R inner guide rail 23, and a right slow shutter plate 19 is fixedly connected to the bottom of the right slow shutter slide 18.

[0029] The bottoms of the left shutter plate 9, right shutter plate 11, left middle shutter plate 13, right middle shutter plate 15, left slow shutter plate 17, and right slow shutter plate 19 are all engaged within the sill 20.

[0030] The sill 20 can limit the movement of each door panel, preventing them from wobbling back and forth and ensuring the stability of the car door device. In addition, both the left shutter slide 8 and the right shutter slide 10 are equipped with sliding wheels 38 that fit tightly against the bottom of the linear guide rail 21, which can further ensure the smooth sliding of the left shutter slide 8 and the right shutter slide 10.

[0031] like Figure 3As shown, the door panel drive assembly includes a door control motor 3 fixed on one side of the upper part of the main body 1. A driven wheel 4 fixed on the main body 1 is mounted on the opposite side of the door control motor 3. A synchronous belt 5 is sleeved between the wheel of the door control motor 3 and the driven wheel 4. A riveting shaft is mounted on the inner side of the door blade 7. A connecting clamp 6 matching the riveting shaft is mounted on the synchronous belt 5. By matching the riveting shaft and the connecting clamp 6, the door blade 7 can be fixedly connected to the synchronous belt 5, allowing the door blade 7 and the synchronous belt 5 to move synchronously. This causes the door blade 7 to drive the left shutter slide plate 8 to move synchronously in the left and right directions, thereby driving the linkage action of each door panel and realizing the control function of the door control motor 3 in controlling the opening and closing state of the door. A door operator controller 2 is connected to the door control motor 3, which can control the working state of the door control motor 3 to achieve stable operation of the car door device. In this embodiment, the door operator controller 2 is installed on the top of the main body 1 and will not affect the installation of other equipment.

[0032] like Figure 1 and Figure 3 As shown, the main linkage component includes two large pulleys 24 vertically fixed to the left and right ends of the main body 1, respectively. Large steel wire ropes 25 are fitted onto the two pulleys 24. Both sides of the left shutter slide 8 are fixedly connected to the upper large steel wire rope 25, and both sides of the right shutter slide 10 are fixedly connected to the lower large steel wire rope 25. The rotation of the large steel wire rope 25 driven by the left shutter slide 8 transmits the driving force to the right shutter slide 10 via the large steel wire rope 28. Since the left shutter slide 8 and right shutter slide 10 are connected to the large steel wire rope 25 in an up-down (or down-up) configuration, they can achieve counter-directional linkage between the two slides.

[0033] In this embodiment, the connection end between the large steel wire rope 25 and the left shutter slide plate 8 is configured as a first long screw, and a first fastening screw is provided on the first long screw to engage with the left shutter slide plate 8. By adjusting the position of the first fastening screw on the first long screw, the tension of the large steel wire rope 25 on the two large rope pulleys 24 can be adjusted, facilitating the subsequent installation and debugging of the large steel wire rope 25. Keeping the large steel wire rope 25 in a taut state can effectively improve the linkage efficiency between the left shutter slide plate 8 and the right shutter slide plate 10, ensuring the stability of the car door device operation.

[0034] like Figure 3As shown, the left-center linkage assembly includes two first left small rope pulleys 26 horizontally mounted on the left and right ends of the left-center door slide plate 12. A first left small steel wire rope 27 is sleeved between the two first left small rope pulleys 26. The inner side of the first left small steel wire rope 27 is fixed to the left-center door slide plate 12 by a first left pressure block 28, and the outer side of the first left small steel wire rope 27 is fixedly connected to the left shutter slide plate 8. This structural design allows the left-center door slide plate 12 to perform a relatively slow sliding motion in the same direction during the left-right sliding of the left shutter slide plate 8, thereby realizing the linkage between the left shutter slide plate 8 and the left-center door slide plate 12.

[0035] The connection end between the first left small steel wire rope 27 and the left shutter slide plate 8 is set as a second long screw. The second long screw is equipped with a second fastening screw that is engaged with the left shutter slide plate 8, which facilitates the later installation and adjustment of the first left small steel wire rope 27. Keeping the first left small steel wire rope 27 in a taut state can effectively improve the smoothness of the linkage between the left shutter slide plate 8 and the left middle shutter slide plate 12.

[0036] Similarly, such as Figure 4 As shown, the right-center linkage assembly includes two first right small rope pulleys 29 horizontally mounted on the left and right ends of the right center door slide plate 14. A first right small steel wire rope 30 is sleeved between the two first right small rope pulleys 29. The inner side of the first right small steel wire rope 30 is fixed to the right center door slide plate 14 by a first right pressure block 31, and the outer side of the first right small steel wire rope 30 is fixedly connected to the right shutter slide plate 10. This structural design allows the right center door slide plate 14 to perform a relatively slow sliding motion in the same direction during the left and right sliding of the right shutter slide plate 10, thereby realizing the linkage between the right shutter slide plate 10 and the right center door slide plate 14.

[0037] The connection end between the first right small steel wire rope 29 and the right shutter slide plate 10 is set as a third long screw. The third long screw is equipped with a third fastening screw that is engaged with the right shutter slide plate 10, which facilitates the later installation and adjustment of the first right small steel wire rope 29. Keeping the first right small steel wire rope 29 in a taut state can effectively improve the smoothness of the linkage between the right shutter slide plate 10 and the right middle shutter slide plate 14.

[0038] like Figure 1 and Figure 3As shown, the left slow shutter linkage assembly includes two second left small rope pulleys 32 horizontally mounted on the left and right ends of the left slow shutter slide 16. A second left small steel wire rope 33 is sleeved between the two second left small rope pulleys 32. The inner side of the second left small steel wire rope 33 is fixed to the body 1 by a second left pressure block 34, and the outer side of the second left small steel wire rope 33 is fixedly connected to the top of the left middle shutter slide 12. This structural design allows the left slow shutter slide 16 to perform a relatively slow sliding motion in the same direction during the left middle shutter slide 12's left and right sliding motion, thereby realizing the linkage between the left middle shutter slide 12 and the left slow shutter slide 16.

[0039] The connection end between the second left small steel wire rope 33 and the left middle door slide plate 12 is set as a fourth long screw. The fourth long screw is equipped with a fourth fastening screw that is engaged with the left middle door slide plate 12, which facilitates the later installation and adjustment of the second left small steel wire rope 33. Keeping the second left small steel wire rope 33 in a taut state can effectively improve the smoothness of the linkage between the left middle door slide plate 12 and the left slow shutter slide plate 16.

[0040] Similarly, such as Figure 1 and Figure 4 As shown, the right slow shutter linkage assembly includes two second right small rope pulleys 35 horizontally mounted on the left and right ends of the right slow shutter slide plate 18. A second right small steel wire rope 36 is sleeved between the two second right small rope pulleys 35. The inner side of the second right small steel wire rope 36 is fixed to the body 1 by a second right pressure block 37, and the outer side of the second right small steel wire rope 36 is fixedly connected to the top of the right middle shutter slide plate 14. This structural design allows the right slow shutter slide plate 18 to perform a relatively slow sliding motion in the same direction during the left and right sliding of the right middle shutter slide plate 14, thereby realizing the linkage between the right middle shutter slide plate 14 and the right slow shutter slide plate 18.

[0041] The connection end between the second right small steel wire rope 36 and the right middle door slide plate 14 is set as the fifth long screw. The fifth long screw is equipped with a fifth fastening screw that is engaged with the right middle door slide plate 14, which facilitates the later installation and adjustment of the second right small steel wire rope 36. This keeps the second right small steel wire rope 36 in a taut state, which can effectively improve the smoothness of the linkage between the right middle door slide plate 14 and the right slow shutter slide plate 18.

[0042] Because the linear guide rail 21 has the characteristics of smooth and stable operation, high precision without shaking, low noise, heavy load, wear resistance, interchangeability, and no deformation, it can effectively improve the operational stability of the left shutter plate 9 and the right shutter plate 11. Both the middle door drive and the slow door drive adopt double-R guide rails. The left middle door plate 13, right middle door plate 15, left slow door plate 17, and right slow door plate 19 adopt an extended design, effectively eliminating the operational shaking of these components. Through the above structural design, shaking of each slide plate during operation on the guide rail is effectively avoided, thus eliminating the problem of shaking during the operation of each door plate. This also ensures that when each door plate encounters resistance during closing, operation, and when the door is in the open position, the tilt of the door plate is small, and the door plate quickly returns to its original position after the resistance is released. This effectively overcomes the problem of the door gap widening when encountering resistance, eliminating safety hazards.

[0043] Working principle: During the door opening operation: the door controller 2 sends a control signal to the door control motor 3, causing the door control motor 3 to work with the driven wheel 4 to drive the synchronous belt 5 to rotate counterclockwise. This causes the synchronous belt 5 to drive the door knife 7, the left shutter slide 8, and the left shutter plate 9 to move to the left in sync. The left shutter slide 8 moves to the left, causing the large steel wire rope 25 to rotate counterclockwise between the two large rope pulleys 24. This causes the large steel wire rope 25 to drive the right shutter slide 10 and the right shutter plate 11 to move to the right in sync.

[0044] When the left shutter slide 8 moves to the left, it also causes the outer side of the first left small steel wire rope 27 to move to the left. Since the inner side of the first left small steel wire rope 27 is fixed to the left middle shutter slide 12 through the first left pressure block 28, the left shutter slide 8 will drive the entire first left small steel wire rope 27 to move to the left at a relatively slow speed, thus achieving the synchronous slow left movement of the left middle shutter slide 12 and the left middle shutter panel 13. When the left middle shutter slide 12 moves to the left, it also causes the outer side of the second left small steel wire rope 33 to move to the left. Since the inner side of the second left small steel wire rope 33 is fixed to the body 1 through the second left pressure block 34, the left middle shutter slide 12 will drive the entire second left small steel wire rope 33 to move to the left at an even slower speed, thus achieving the synchronous slow left movement of the left slow shutter slide 16 and the left slow shutter panel 17.

[0045] Similarly, when the right shutter slide 10 moves to the right, it also causes the outer side of the first right small steel wire rope 30 to move to the right. Since the inner side of the first right small steel wire rope 30 is fixed to the right middle shutter slide 14 through the first right pressure block 31, the right shutter slide 10 will drive the entire first right small steel wire rope 30 to move to the right at a slower speed, thus achieving the synchronous slow right movement of the right middle shutter slide 14 and the right middle shutter panel 15. When the right middle shutter slide 14 moves to the right, it also causes the outer side of the second right small steel wire rope 36 to move to the right. Since the inner side of the second right small steel wire rope 36 is fixed to the body 1 through the second right pressure block 37, the right middle shutter slide 14 will drive the entire second right small steel wire rope 36 to move to the right at an even slower speed, thus achieving the synchronous slow right movement of the right slow shutter slide 18 and the right slow shutter panel 19.

[0046] After the door control motor 3 completes the set operation, it stops running, so that each door panel is in the fully open state, thus completing the door opening action.

[0047] When the door is closing: the door controller 2 sends a control signal to the door motor 3, causing the door motor 3 to rotate clockwise with the driven wheel 4 to drive the synchronous belt 5. This causes the synchronous belt 5 to move the door knife 7, the left shutter slide 8, and the left shutter plate 9 to move to the right in sync. The left shutter slide 8 moves to the right, causing the large steel wire rope 25 to rotate clockwise between the two large rope pulleys 24. This causes the large steel wire rope 25 to move the right shutter slide 10 and the right shutter plate 11 to move to the left in sync.

[0048] When the left shutter slide 8 moves to the right, it also causes the outer side of the first left small steel wire rope 27 to move to the right. Since the inner side of the first left small steel wire rope 27 is fixed to the left middle shutter slide 12 through the first left pressure block 28, the left shutter slide 8 will drive the entire first left small steel wire rope 27 to move to the right at a relatively slow speed, thus achieving the synchronous slow rightward movement of the left middle shutter slide 12 and the left middle shutter panel 13. When the left middle shutter slide 12 moves to the right, it also causes the outer side of the second left small steel wire rope 33 to move to the right. Since the inner side of the second left small steel wire rope 33 is fixed to the body 1 through the second left pressure block 34, the left middle shutter slide 12 will drive the entire second left small steel wire rope 33 to move to the right at an even slower speed, thus achieving the synchronous slow rightward movement of the left slow shutter slide 16 and the left slow shutter panel 17.

[0049] Similarly, when the right shutter slide 10 moves to the left, it also causes the outer side of the first right small steel wire rope 30 to move to the left. Since the inner side of the first right small steel wire rope 30 is fixed to the right middle shutter slide 14 through the first right pressure block 31, the right shutter slide 10 will cause the entire first right small steel wire rope 30 to move to the left at a relatively slow speed, thus achieving the synchronous slow leftward movement of the right middle shutter slide 14 and the right middle shutter panel 15. When the right middle shutter slide 14 moves to the left, it also causes the outer side of the second right small steel wire rope 36 to move to the left. Since the inner side of the second right small steel wire rope 36 is fixed to the body 1 through the second right pressure block 37, the right middle shutter slide 14 will cause the entire second right small steel wire rope 36 to move to the left at an even slower speed, thus achieving the synchronous slow leftward movement of the right slow shutter slide 18 and the right slow shutter panel 19.

[0050] After the door control motor 3 completes the set operation, it stops running, so that each door panel is in a fully closed state, thus completing the door closing action.

[0051] Therefore, the present invention adopts the above-mentioned linear guide rail three-fold car door device, which achieves the core objectives of "smooth operation, precise linkage, safety and reliability, and convenient maintenance" through structural optimization, effectively improving the user experience and safety performance of the elevator, and is suitable for various high-rise building elevators, commercial elevators and other scenarios, with extremely high practical value and promotion prospects.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A center split three-fold car door device in a linear guide, characterized by: The application relates to a door system, which comprises a body, double-R inner guide rails, double-R middle guide rails and straight guide rails fixed horizontally from inside to outside at the bottom of the body, left and right slow door assemblies respectively clamped on the left and right sides of the double-R inner guide rails, left and right middle door assemblies clamped on the left and right sides of the double-R middle guide rails and installed between the left and right slow door assemblies, and left and right shutter assemblies clamped on the left and right sides of the straight guide rails and installed between the left and right middle door assemblies. The left and right slow door assemblies are respectively provided with left and right slow linkage assemblies fixed on the body and connected with the left and right middle door assemblies; the left and right middle door assemblies are respectively provided with left and right middle linkage assemblies fixed on the left and right middle door assemblies and connected with the left and right shutter assemblies; the left and right shutter assemblies are jointly connected with a main linkage assembly fixed on the body; the left shutter assembly is fixedly connected with a door knife connected with a door plate driving assembly fixed on the body.

2. The three-fold door device in a linear guide rail according to claim 1, characterized in that: The left shutter assembly comprises a left shutter sliding plate clamped on the straight guide rail, and the bottom of the left shutter sliding plate is fixedly connected with a left shutter plate; the right shutter assembly comprises a right shutter sliding plate clamped on the straight guide rail, and the bottom of the right shutter sliding plate is fixedly connected with a right shutter plate; the door knife is fixedly connected above the left shutter sliding plate. The left middle door assembly comprises a left middle door sliding plate clamped on the double-R middle guide rail, and the bottom of the left middle door sliding plate is fixedly connected with a left middle door plate; the right middle door assembly comprises a right middle door sliding plate clamped on the double-R middle guide rail, and the bottom of the right middle door sliding plate is fixedly connected with a right middle door plate. The left slow door assembly comprises a left slow door sliding plate clamped on the double-R inner guide rail, and the bottom of the left slow door sliding plate is fixedly connected with a left slow door plate; the right slow door assembly comprises a right slow door sliding plate clamped on the double-R inner guide rail, and the bottom of the right slow door sliding plate is fixedly connected with a right slow door plate. The bottoms of the left slow door plate, the right slow door plate, the left middle door plate, the right middle door plate, the left shutter plate and the right shutter plate are clamped in a sill.

3. The three-fold door device in a linear guide rail according to claim 2, characterized in that: The door plate driving assembly comprises a door control motor fixed on one side of the body, a driven wheel fixed on the body installed on the opposite side of the door control motor, a synchronous belt sleeved between the rotating wheel of the door control motor and the driven wheel, a rivet shaft installed on the inner side of the door knife, a connecting collet matched with the rivet shaft installed on the synchronous belt, and a door machine controller connected with the door control motor.

4. The center folding door device of claim 2, wherein: The main linkage assembly comprises two large rope wheels vertically fixed on the left and right sides of the body, and a large steel wire rope sleeved on the two large rope wheels; the left shutter sliding plate is fixedly connected on the upper large steel wire rope, and the right shutter sliding plate is fixedly connected on the lower large steel wire rope.

5. The center folding door device of claim 4, wherein: The connecting end of the large steel wire rope and the left shutter sliding plate or the right shutter sliding plate is provided with a first long screw rod, and the first long screw rod is provided with a first fastening screw screwed on the corresponding sliding plate.

6. The center folding door device of claim 2, wherein: The left middle linkage assembly comprises two first left small rope wheels horizontally installed at the left and right ends of the left middle door sliding plate, and a first left small steel wire rope is sleeved between the two first left small rope wheels, the inner side of the first left small steel wire rope is fixed on the left middle door sliding plate through a first left pressing block, and the outer side of the first left small steel wire rope is fixedly connected on the left shutter sliding plate. The right middle linkage assembly comprises two first right small rope wheels horizontally installed at the left and right ends of the right middle door sliding plate, and a first right small steel wire rope is sleeved between the two first right small rope wheels, the inner side of the first right small steel wire rope is fixed on the right middle door sliding plate through a first right pressing block, and the outer side of the first right small steel wire rope is fixedly connected on the right shutter sliding plate.

7. The center folding door device of claim 6, wherein: The connecting end of the first left small steel wire rope and the left shutter sliding plate is provided with a second long screw rod, and the second long screw rod is provided with a second fastening screw screwed on the left shutter sliding plate. The connecting end of the first right small steel wire rope and the right shutter sliding plate is provided with a third long screw rod, and the third long screw rod is provided with a third fastening screw screwed on the right shutter sliding plate.

8. The center folding door device of claim 2, wherein: The left slow linkage assembly comprises two second left small rope wheels horizontally installed at the left and right ends of the left slow door sliding plate, and a second left small steel wire rope is sleeved between the two second left small rope wheels, the inner side of the second left small steel wire rope is fixed on the body through a second left pressing block, and the outer side of the second left small steel wire rope is fixedly connected on the top of the left middle door sliding plate. The right slow linkage assembly comprises two second right small rope wheels horizontally installed at the left and right ends of the right slow door sliding plate, and a second right small steel wire rope is sleeved between the two second right small rope wheels, the inner side of the second right small steel wire rope is fixed on the body through a second right pressing block, and the outer side of the second right small steel wire rope is fixedly connected on the top of the right middle door sliding plate.

9. The center folding door device of claim 8, wherein: The connecting end of the second left small steel wire rope and the left middle door sliding plate is provided with a fourth long screw rod, and the fourth long screw rod is provided with a fourth fastening screw screwed on the left middle door sliding plate. The connecting end of the second right small steel wire rope and the right middle door sliding plate is provided with a fifth long screw rod, and the fifth long screw rod is provided with a fifth fastening screw screwed on the right middle door sliding plate.

10. The center folding door device of claim 2, wherein: The left shutter sliding plate and the right shutter sliding plate are both provided with a lower pulley closely combined with the bottom of the linear guide rail.

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