Linear guide rail halving three-fold landing door device

Abstract

The invention relates to the technical field of center-split three-fold landing doors, in particular to a linear guide rail center-split three-fold landing door device which comprises a body, a sill, a slow door assembly, a middle door assembly, a shutter assembly and a latch hook assembly, and door plates are installed below all the assemblies and are in linkage through a transmission assembly. A first double-R guide rail, a second double-R guide rail and a linear guide rail are installed on the body, the second double-R guide rail is stacked on the first double-R guide rail, the linear guide rail and the stacked double-R guide rail are horizontally arranged in parallel, and the slow door assembly, the middle door assembly and the shutter assembly are connected with the first double-R guide rail, the second double-R guide rail and the linear guide rail in a matched mode respectively. The latch hook assembly is fixedly installed on the left shutter sliding plate and the right shutter sliding plate. The device is compact in structure, suitable for a small well space, stable in operation and free of shaking; the slow door sliding plate and the middle door sliding plate are lengthened, so that the operation stability is improved, and the problems that an existing small-door-opening-distance landing door device shakes in operation, is prone to inclining when encountering resistance and cannot be reset are solved.

Description

Technical Field

[0001] This invention relates to the field of three-fold split doors, and particularly to a linear guide rail three-fold split door device. Background Technology

[0002] In the field of elevator landing door technology, the three-fold landing door structure is widely used in various elevator equipment because it can adapt to different shafts and door opening requirements, especially in scenarios where building space is limited and a small door opening distance design is required.

[0003] Existing center-parting three-fold landing door devices suffer from the following shortcomings in actual use due to their small door opening distance design: First, the small door opening distance results in narrow door panel width and light weight, and the width of the door hanger at the door panel connection is limited by the installation space, making the device prone to overall shaking during operation and resulting in poor operational stability; Second, the structure of the narrow door hanger combined with the door panel makes the door panel prone to tilting when encountering external resistance during closing, operation, and opening, and it cannot automatically reset after the resistance is removed, resulting in excessive door gaps. This not only leads to obstruction of the door operator and frequent elevator malfunctions, but also poses a safety hazard of people and items getting stuck; Third, the guide design of traditional center-parting three-fold landing doors is not optimized for the actual needs of small shafts and large door opening distances, and cannot maximize the door opening distance while adapting to the installation space of small shafts, making it difficult to meet the usage requirements in some scenarios.

[0004] Existing center-parted three-fold small-opening landing door devices suffer from poor operational stability, are prone to tilting and cannot be reset when encountering obstructions, have excessively large door gaps causing malfunctions and safety hazards, and are difficult to meet the needs of both small shaft installation and large door opening distance usage. There is an urgent need for a center-parted three-fold landing door device with an optimized structure to solve the above-mentioned technical defects. Summary of the Invention

[0005] The purpose of this invention is to provide a three-fold layered door device in a linear guide rail, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides a three-fold door device in a linear guide rail, comprising a body, a sill, a slow shutter assembly, a medium shutter assembly, a fast shutter assembly, a door panel, and a locking hook assembly. The door panel is disposed below the slow shutter assembly, the medium shutter assembly, and the fast shutter assembly, and the slow shutter assembly, the medium shutter assembly, and the fast shutter assembly are linked together by a transmission assembly. A slider is provided at the bottom of the door panel, and the sill has a groove adapted to the gap of the slider, allowing the slider to slide along the groove. The main body is fixedly installed with a first double-R guide rail, a second double-R guide rail and a linear guide rail. The second double-R guide rail is stacked on the first double-R guide rail and is supported by screws and washers to form a fixed gap. The linear guide rail and the stacked double-R guide rail are horizontally parallel and all three extend in the same horizontal direction along the elevator door opening and closing direction. The slow shutter assembly includes a left slow shutter slide and a right slow shutter slide, both of which cooperate with a first double R guide rail and slide in the opposite direction along it. The middle shutter assembly includes a left middle shutter slide and a right middle shutter slide, both of which cooperate with a second double R guide rail and slide in the opposite direction along it. The fast shutter assembly includes a left fast shutter slide and a right fast shutter slide, both of which are fixedly connected to a slider on a linear guide rail, and both can slide in the opposite direction along the linear guide rail. The locking hook assembly includes a locking body and a locking hook that hooks and engages with the locking body. The locking body and the locking hook are respectively fixedly installed on the left shutter slide and the right shutter slide. The device also includes an emergency unlocking mechanism, which is a lintel lock or a door panel lock.

[0007] Preferably, the transmission assembly includes a first transmission assembly, a second transmission assembly, and a third transmission assembly. The first transmission assembly includes a first left small rope pulley, a second left small rope pulley, a left small steel wire rope, a first right small rope pulley, a second right small rope pulley, and a right small steel wire rope. The first left small rope pulley and the second left small rope pulley are respectively fixed to the left and right sides of the upper end of the left slow shutter slide. The left small steel wire rope is wound on the first left small rope pulley and the second left small rope pulley, and one side of the left small steel wire rope is connected to the left middle door slide plate, and the other side is fixedly connected to the body through the pressure block. The first right small rope pulley and the second right small rope pulley are respectively fixed on the left and right sides of the upper end of the right slow shutter slide. The right small steel wire rope is wound around the first right small rope pulley and the second right small rope pulley. One side of the right small steel wire rope is connected to the right middle door slide, and the other side is fixedly connected to the body through a pressure block.

[0008] Preferably, the second transmission assembly includes a first middle rope pulley, a second middle rope pulley, a first middle steel wire rope, a third middle rope pulley, a fourth middle rope pulley, and a second middle steel wire rope, wherein the first middle rope pulley and the second middle rope pulley are respectively fixed to the left and right sides of the upper end of the left middle door slide plate; The first middle wire rope is wound on the first middle rope pulley and the second middle rope pulley, and one side of the first middle wire rope is connected to the left shutter slide plate, and the other side is fixedly connected to the left middle shutter slide plate through the pressure block; The third and fourth middle rope pulleys are respectively fixed to the left and right sides of the upper end of the right middle door slide plate. The second middle steel wire rope is wound around the third and fourth middle rope pulleys, and one side of the second middle steel wire rope is connected to the right shutter slide plate, while the other side is fixedly connected to the right middle door slide plate through a pressure block.

[0009] Preferably, the third transmission assembly includes a left large rope pulley, a right large rope pulley, and a large steel wire rope. The left large rope pulley and the right large rope pulley are arranged symmetrically from left to right and are both fixed to the body by screws. The large steel wire rope is wound around the left and right large rope pulleys, and one side of the large steel wire rope is fixedly connected to the right shutter slide plate, while the other side is fixedly connected to the left shutter slide plate through a pressure block.

[0010] Preferably, both the left and right slow shutter slides are fixedly equipped with two first upper pulleys, and both are detachably connected to two first lower pulleys by nuts. The first upper pulleys are disposed against the upper side of the first double R guide rail, and the first lower pulleys are disposed against the lower side of the first double R guide rail. Both the first upper pulleys and the first lower pulleys slide in cooperation with the first double R guide rail. Two second upper pulleys are fixedly installed on both the left and right middle door sliding plates, and two second lower pulleys are detachably connected to each other by nuts. The second upper pulleys are set to fit against the upper side of the second double R guide rail, and the second lower pulleys are set to fit against the lower side of the second double R guide rail. Both the second upper pulleys and the second lower pulleys slide in cooperation with the second double R guide rail. The left slow shutter slide, right slow shutter slide, left middle shutter slide, and right middle shutter slide are all provided with inclined elongated holes. By adjusting the installation position of the first and second sliding rollers in the inclined elongated holes, the gaps between the first and second sliding rollers and the first and second double R guide rails, respectively, can be adjusted.

[0011] Preferably, the left shutter slide and the right shutter slide are both fixedly connected to the slider on the linear guide rail by countersunk screws and welded to prevent displacement due to external forces; The lower ends of the left and right shutter slides are each equipped with two third sliding rollers, which are in close contact with the linear guide rail. The surface of the third sliding wheel is made of plastic material to ensure smooth operation, reduce noise, and prevent the door panel from tilting when subjected to external impact.

[0012] Preferably, the device further includes a reset component, which is a reset spring, one end of which is connected to the left middle door sliding plate, and the other end of which is connected to the main body.

[0013] Preferably, the reset component is a reset hammer, and a reset pulley is fixedly installed on one side of the main body. The reset hammer includes a hammer component and a hammer wire rope. One end of the hammer wire rope is connected to the hammer component, and the other end passes around the reset pulley and is fixedly connected to the left middle door slide plate.

[0014] Preferably, the left shutter slide and the right shutter slide are provided with adjusting components for adjusting the tension of the large steel wire rope, the first small steel wire rope, and the second small steel wire rope.

[0015] Preferably, the left slow shutter slide, right slow shutter slide, left middle shutter slide, and right middle shutter slide are all designed to be longer to eliminate the swaying of the slide during operation.

[0016] Therefore, the present invention provides a three-fold door device with a linear guide rail, which has the following beneficial effects: The present invention optimizes the spatial layout by stacking the second double R guide rail on the first double R guide rail and placing it horizontally alongside the linear guide rail to form a three-guide rail structure, thereby enabling the device to achieve a larger door opening width within a limited shaft size, solving the contradiction between small shaft space and large door opening requirements, and improving the device's adaptability to various scenarios.

[0017] The shutter slide is fixedly connected to a high-precision linear guide slider. Utilizing the smooth, high-precision, and wobble-free characteristics of the linear guide, the shutter panel's wobbling during operation is eliminated. Simultaneously, the slow-shutter and medium-shutter slides feature an extended design, and the clearance between the sliding rollers and the double-R guide rails can be precisely adjusted via inclined elongated holes, ensuring smooth slide operation and improving the overall stability of the entire door system during opening and closing. Furthermore, a third sliding roller with a plastic-coated surface is located at the lower end of the shutter slide and fits tightly against the linear guide rail, further buffering external impacts and preventing shutter panel misalignment. After the external force is eliminated, the reset component quickly resets the door, avoiding operational obstruction and safety accidents caused by excessive door gaps, significantly improving the elevator's operational safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a three-fold layered door device in a linear guide rail according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a left view of a three-fold layered door device in a linear guide rail according to Embodiment 1 of the present invention; Figure 4 for Figure 3 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the left-side linkage method in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the right-side linkage method in Embodiment 1 of the present invention; Figure Labels 1. Body; 101. First double-R guide rail; 102. Second double-R guide rail; 103. Linear guide rail; 104. Pressure block; 2. Threshold; 3. Slow shutter assembly; 301. Left slow shutter slide plate; 302. Right slow shutter slide plate; 303. First upper pulley; 304. First lower pulley; 4. Middle shutter assembly; 401. Left middle shutter slide plate; 402. Right middle shutter slide plate; 403. Second upper pulley; 404. Second lower pulley; 5. Shutter assembly; 501. Left shutter slide plate; 502. Right shutter slide plate; 503. Third lower pulley; 6. First transmission assembly; 601. First left small rope pulley; 602. Second left small rope pulley; 603. First right small rope pulley; 604. Second... 605. Right small rope pulley; 606. Left small steel wire rope; 7. Right small steel wire rope; 7. Second transmission assembly; 701. First middle rope pulley; 702. Second middle rope pulley; 703. Third middle rope pulley; 704. Fourth middle rope pulley; 705. First middle steel wire rope; 706. Second middle steel wire rope; 8. Third transmission assembly; 801. Left large rope pulley; 802. Right large rope pulley; 803. Large steel wire rope; 9. Lock hook assembly; 91. Lock body; 92. Lock hook; 10. Door panel; 11. Return spring; 12. Emergency unlocking mechanism; 121. Door lintel lock; 122. Door panel lock; 13. Return counterweight; 131. Return pulley; 132. Counterweight steel wire rope; 14. Inclined elongated hole. Detailed Implementation

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] Example 1 like Figure 1-6As shown, the present invention discloses a three-fold door device with a linear guide rail, comprising a body 1, a sill 2, a slow door assembly 3, a medium door assembly 4, a fast door assembly 5, and a locking hook assembly 9. Door panels 10 are installed below the slow door assembly 3, the medium door assembly 4, and the fast door assembly 5. The slow door assembly 3, the medium door assembly 4, and the fast door assembly 5 are linked together by a transmission assembly. A slider is provided at the bottom of the door panel 10, and the sill 2 has a groove that matches the gap of the slider. The slider can slide along the groove. Through the cooperation between the slider and the groove, the lower end of the door panel 10 is guided and limited, ensuring the stability of the lower end of the door panel 10 during operation and preventing the door panel 10 from swinging.

[0023] The main body 1 is fixedly installed with a first double R guide rail 101, a second double R guide rail 102 and a linear guide rail 103. The second double R guide rail 102 is stacked on the first double R guide rail 101 and is supported by screws and washers to form a fixed gap. The linear guide rail 103 is horizontally parallel to the stacked double R guide rail and all three extend in the same horizontal direction along the elevator door opening and closing direction.

[0024] The slow shutter assembly 3 includes a left slow shutter slide 301 and a right slow shutter slide 302, both of which cooperate with the first double-R guide rail 101 and slide in the opposite direction along it. The middle shutter assembly 4 includes a left middle shutter slide 401 and a right middle shutter slide 402, both of which cooperate with the second double-R guide rail 102 and slide in the opposite direction along it. The fast shutter assembly 5 includes a left fast shutter slide 501 and a right fast shutter slide 502. The left fast shutter slide 501 and the right fast shutter slide 502 are fixedly connected to the slider on the linear guide rail 103, and both can slide in the opposite direction along the linear guide rail 103. The linear guide rail 103 has the characteristics of smooth and stable operation, high precision, heavy load, and wear resistance. By fixing the shutter slide to the slider of the high-precision linear guide rail 103, the shaking that is easy to occur when the shutter slide runs on a traditional guide rail is avoided, thereby eliminating the shaking of the shutter panel 10 during operation. At the same time, it overcomes the deformation problem caused by the obstruction of the shutter panel 10, achieving the effect of smooth operation.

[0025] The locking hook assembly 9 includes a lock body 91 and a locking hook 92 that hooks and engages with the lock body 91. The lock body 91 and the locking hook 92 are respectively fixedly installed on the left shutter slide plate 501 and the right shutter slide plate 502. Through the cooperation of the locking hook assembly 9 with the center-parted three-fold car door device, the landing door and the car door can be locked and unlocked in a coordinated manner.

[0026] The device also includes an emergency unlocking mechanism 12, which is either a lintel lock 121 or a door panel lock 122. The lintel lock 121 is located on the lintel, and the door panel lock 122 is located on the door panel 10. Both can be used to open the landing door from the outside in an emergency, providing two emergency unlocking methods for users to choose from, meeting different application scenarios and safety requirements, and improving the safety and adaptability of the device.

[0027] The transmission assembly includes a first transmission assembly 6, a second transmission assembly 7, and a third transmission assembly 8. The first transmission assembly 6 is used to realize the linkage between the slow shutter assembly 3 and the medium shutter assembly 4. The first transmission assembly 6 includes a first left small rope pulley 601, a second left small rope pulley 602, a left small steel wire rope 605, a first right small rope pulley 603, a second right small rope pulley 604, and a right small steel wire rope 606. The first left small rope pulley 601 and the second left small rope pulley 602 are respectively fixed to the left and right sides of the upper end of the left slow shutter slide plate 301. The left small steel wire rope 605 is wound around the first left small rope pulley 601 and the second left small rope pulley 602, and one side of the left small steel wire rope 605 is connected to the left middle door slide plate 401, and the other side is fixedly connected to the body 1 through the pressure block 104; the first right small rope pulley 603 and the second right small rope pulley 604 are respectively fixed to the left and right sides of the upper end of the right slow shutter slide plate 302, and the right small steel wire rope 606 is wound around the first right small rope pulley 603 and the second right small rope pulley 604, and one side of the right small steel wire rope 606 is connected to the right middle door slide plate 402, and the other side is fixedly connected to the body 1 through the pressure block 104.

[0028] When the left center door slide 401 moves, one end of the left small steel wire rope 605 is fixedly connected to the left center door slide 401, and the other end is fixed to the body 1 through the pressure block 104. The left small steel wire rope 605 is wound around two small rope pulleys (the first left small rope pulley 601 and the second left small rope pulley 602) on the left slow shutter slide 301. Therefore, the movement of the left center door slide 401 will drive the left slow shutter slide 301 to move along the first double-R guide rail 101 via the left small steel wire rope 605, realizing the linkage between the left center door and the left slow shutter. Specifically, when the door is opened, the left center door slide 401 moves to the left, pulling the left slow shutter slide 301 to the left via the left small steel wire rope 605; the opposite is true when the door is closed. Similarly, the right small steel wire rope 606 on the right side realizes the linkage between the right center door slide 402 and the right slow shutter slide 302.

[0029] The second transmission assembly 7 is used to realize the linkage between the middle door assembly 4 and the shutter assembly 5. The second transmission assembly 7 includes a first middle rope wheel 701, a second middle rope wheel 702, a first middle steel wire rope 705, a third middle rope wheel 703, a fourth middle rope wheel 704, and a second middle steel wire rope 706. The first middle rope wheel 701 and the second middle rope wheel 702 are respectively fixed to the left and right sides of the upper end of the left middle door slide plate 401. The first middle wire rope 705 is wound around the first middle rope pulley 701 and the second middle rope pulley 702, and one side of the first middle wire rope 705 is connected to the left shutter slide plate 501, and the other side is fixedly connected to the left middle shutter slide plate 401 through the pressure block 104. The third and fourth intermediate rope pulleys 703 and 704 are respectively fixed to the left and right sides of the upper end of the right middle door slide plate 402. The second intermediate steel wire rope 706 is wound around the third and fourth intermediate rope pulleys 703 and 704. One side of the second intermediate steel wire rope 706 is connected to the right shutter slide plate 502, and the other side is fixedly connected to the right middle door slide plate 402 through the pressure block 104.

[0030] When the left shutter slide 501 moves, one end of the first intermediate steel wire rope 705 is fixedly connected to the left shutter slide 501, and the other end is fixed to the left middle door slide 401 through the pressure block 104. The first intermediate steel wire rope 705 is wound around two intermediate rope pulleys (first intermediate rope pulley 701 and second intermediate rope pulley 702) on the left middle door slide 401. Therefore, the movement of the left shutter slide 501 will drive the left middle door slide 401 to move along the second double-R guide rail 102 via the first intermediate steel wire rope 705, realizing the linkage between the left shutter and the left middle door. Specifically, when the door is opened, the left shutter slide 501 moves to the left, pulling the left middle door slide 401 to the left via the first intermediate steel wire rope 705; the opposite is true when the door is closed. Similarly, the second intermediate steel wire rope 706 on the right side realizes the linkage between the right shutter slide 502 and the right middle door slide 402.

[0031] The third transmission assembly 8 is used to realize the synchronous opening of the left and right shutter slides 502. The third transmission assembly 8 includes a left large rope pulley 801, a right large rope pulley 802, and a large steel wire rope 803. The left large rope pulley 801 and the right large rope pulley 802 are arranged symmetrically from left to right and are both fixed to the body 1 by screws. The large steel wire rope 803 is wound around the left large rope pulley 801 and the right large rope pulley 802, and one side of the large steel wire rope 803 is fixedly connected to the right shutter slide 502, and the other side is fixedly connected to the left shutter slide 501 through the pressure block 104. The large steel wire rope 803 is wound around the left large rope pulley 801 and the right large rope pulley 802, and its two ends are respectively connected to the left shutter slide 501 and the right shutter slide 502. When the right shutter slide 502 is driven (e.g., by being clamped by the door knife) to move to the right, the left shutter slide 501 moves synchronously to the left through the transmission of the large steel wire rope 803 and the left and right large rope wheels 802, thus realizing the opening of the left and right shutter slides 502.

[0032] When the car door drives the right shutter slide 502 to move to the right, the right shutter slide 502 drives the left shutter slide 501 to move to the left via the large steel wire rope 803. At the same time, the right shutter slide 502 drives the right middle door slide 402 to move to the right via the second middle steel wire rope 706. The right middle door slide 402 drives the right slow shutter slide 302 to move to the right via the right small steel wire rope 606. The left shutter slide 501 drives the left middle door slide 401 to move to the left via the first middle steel wire rope 705. The left middle door slide 401 drives the left slow shutter slide 301 to move to the left via the left small steel wire rope 605, thereby realizing the sequential opening and closing of the six door panels 10.

[0033] In this embodiment, two first upper pulleys 303 are fixedly installed on both the left slow shutter slide plate 301 and the right slow shutter slide plate 302, and two first lower pulleys 304 are detachably connected to each other by nuts. The first upper pulleys 303 are disposed in contact with the upper side of the first double R guide rail 101, and the first lower pulleys 304 are disposed in contact with the lower side of the first double R guide rail 101. Both the first upper pulleys 303 and the first lower pulleys 304 slide in cooperation with the first double R guide rail 101.

[0034] Two second upper pulleys 403 are fixedly installed on both the left middle door slide plate 401 and the right middle door slide plate 402, and two second lower pulleys 404 are detachably connected to each other by nuts. The second upper pulleys 403 are set to fit against the upper side of the second double R guide rail 102, and the second lower pulleys 404 are set to fit against the lower side of the second double R guide rail 102. Both the second upper pulleys 403 and the second lower pulleys 404 slide in cooperation with the second double R guide rail 102.

[0035] Each of the left slow shutter slide 301, right slow shutter slide 302, left middle shutter slide 401, and right middle shutter slide 402 has an inclined elongated hole 14. By adjusting the installation position of the first lower slide roller 304 and the second lower slide roller 404 in the inclined elongated hole 14, the gap between the first lower slide roller 304 and the first double R guide rail 101 and the second double R guide rail 102, respectively, can be adjusted. The upper and lower slide rollers together clamp the guide rails, ensuring that the slide plate runs smoothly along the guide rails. The design of the inclined elongated hole 14 makes the installation position of the lower slide rollers adjustable, thereby allowing precise adjustment of the fit gap between the lower slide rollers and the guide rails. This ensures smooth operation while avoiding shaking caused by excessive gaps, improving the adaptability of the assembly and the stability of operation.

[0036] Both the left shutter slide 501 and the right shutter slide 502 are fixedly connected to the slider on the linear guide rail 103 by countersunk screws and welded to prevent displacement due to external forces. Two third sliding rollers 503 are installed at the lower end of both the left and right shutter slides 501 and 502, and these rollers are in close contact with the linear guide rail 103. The surface of the third sliding rollers 503 is made of plastic material to ensure smooth operation, reduce noise, and prevent the door panel 10 from tilting under external impact.

[0037] The left slow shutter slide 301, right slow shutter slide 302, left middle door slide 401, and right middle door slide 402 are all designed with an extended length. The extended design of the slide increases the length of the fit with the guide rail, making the slide run more smoothly on the guide rail and effectively eliminating the shaking of the slide during operation, thereby ensuring the running stability of the slow shutter door panel 10 and the middle door door panel 10.

[0038] The device also includes a reset component. In this embodiment, the reset component is a reset spring 11. One end of the reset spring 11 is connected to the left middle door slide plate 401, and the other end is connected to the body 1. When the door is opened, the left middle door slide plate 401 moves to the left, stretching the reset spring 11 and allowing the spring to store elastic potential energy. When the external force of opening the door is released, the spring releases energy and contracts, pulling the left middle door slide plate 401 to the right to reset, thereby driving the entire door panel 10 system to close.

[0039] The left shutter slide 501 and the right shutter slide 502 are equipped with adjusting components for adjusting the tension of the large steel wire rope 803, the first small steel wire rope, and the second small steel wire rope. The tension of each steel wire rope can be adjusted through the adjusting components to ensure accurate transmission of the steel wire rope without slack, and to avoid transmission errors and asynchronous operation of the door panel 10 caused by loose steel wire ropes.

[0040] Example 2 The difference between this embodiment and embodiment 1 lies in the different way the reset component is set. In this embodiment, the reset component is a reset hammer 13. A reset pulley 131 is fixedly installed on one side of the body 1. The reset hammer 13 includes a hammer component and a hammer wire rope 132. One end of the hammer wire rope 132 is connected to the hammer component, and the other end passes around the reset pulley 131 and is fixedly connected to the left middle door slide plate 401.

[0041] When the door is opened, the left middle door slide plate 401 moves to the left, pulling the counterweight component upward through the counterweight wire rope 132, so that the counterweight component gains gravitational potential energy; when the external force of opening the door is released, the counterweight component descends under the action of gravity, pulling the left middle door slide plate 401 to the right to reset through the counterweight wire rope 132, thereby driving the entire door panel 10 system to close.

[0042] The working process of this device is as follows: The initial state is the closed state. When the car arrives at the landing, the door knife on the car door clamps the locking hook assembly 9 (lock body 91 and locking hook 92 cooperate) on the right shutter slide 502, and after opening the locking hook, it drives the right shutter slide 502 to move to the right.

[0043] The movement of the right shutter slide 502 is transmitted to the left shutter slide 501 via the large steel wire rope 803 and the left and right large rope pulleys 801 and 802, causing the left shutter slide 501 to move synchronously to the left, thus achieving the opening of the left and right shutter slides 502. Simultaneously, the movement of the right shutter slide 502 is transmitted to the right middle shutter slide 402 via the second middle steel wire rope 706 and the two middle rope pulleys (the third middle rope pulley 703 and the fourth middle rope pulley 704) on the right middle shutter slide 402, causing the right middle shutter slide 402 to move to the right; the movement of the left shutter slide 501 is transmitted to the left middle shutter slide 401 via the first middle steel wire rope 705 and the two middle rope pulleys (the first middle rope pulley 701 and the second middle rope pulley 702) on the left middle shutter slide 401, causing the left middle shutter slide 401 to move to the left. Furthermore, the movement of the right middle door slide plate 402 is transmitted to the right slow shutter slide plate 302 via the right small steel wire rope 606 and two small rope pulleys (first right small rope pulley 603 and second right small rope pulley 604) on the right slow shutter slide plate 302, causing the right slow shutter slide plate 302 to move to the right; the movement of the left middle door slide plate 401 is transmitted to the left slow shutter slide plate 301 via the left small steel wire rope 605 and two small rope pulleys (first left small rope pulley 601 and second left small rope pulley 602) on the left slow shutter slide plate 301, causing the left slow shutter slide plate 301 to move to the left. This achieves the sequential opening of the six door panels 10: first the left and right shutters open, then the left and right middle doors open at half the shutter speed, and finally the left and right slow shutters open at a quarter the shutter speed, until all door panels 10 reach the open position.

[0044] The closing process is the opposite: when the door knife is released, under the action of the reset component, the left middle door slide plate 401 moves to the right, which drives the right shutter slide plate 502 to the left and the left shutter slide plate 501 to the right through the transmission system. At the same time, the middle door slide plate and the slow shutter slide plate move to the middle through the steel wire ropes, so as to achieve sequential closing.

[0045] 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 three-fold floor door device with a linear guide rail, characterized in that: The device includes a body, a sill, a slow shutter assembly, a medium shutter assembly, a fast shutter assembly, a door panel, and a lock hook assembly. The door panel is located below the slow shutter assembly, the medium shutter assembly, and the fast shutter assembly, and the slow shutter assembly, the medium shutter assembly, and the fast shutter assembly are linked together through a transmission assembly. A slider is provided at the bottom of the door panel, and the sill has a groove that matches the gap of the slider, allowing the slider to slide along the groove. The main body is fixedly installed with a first double-R guide rail, a second double-R guide rail and a linear guide rail. The second double-R guide rail is stacked on the first double-R guide rail and is supported by screws and washers to form a fixed gap. The linear guide rail and the stacked double-R guide rail are horizontally parallel and all three extend in the same horizontal direction along the elevator door opening and closing direction. The slow shutter assembly includes a left slow shutter slide and a right slow shutter slide, both of which cooperate with a first double R guide rail and slide in the opposite direction along it. The middle shutter assembly includes a left middle shutter slide and a right middle shutter slide, both of which cooperate with a second double R guide rail and slide in the opposite direction along it. The fast shutter assembly includes a left fast shutter slide and a right fast shutter slide, both of which are fixedly connected to a slider on a linear guide rail, and both can slide in the opposite direction along the linear guide rail. The locking hook assembly includes a locking body and a locking hook that hooks and engages with the locking body. The locking body and the locking hook are respectively fixedly installed on the left shutter slide and the right shutter slide. The device also includes an emergency unlocking mechanism, which is a lintel lock or a door panel lock.

2. A three-fold floor door device in a linear guide rail according to claim 1, characterized in that: The transmission assembly includes a first transmission assembly, a second transmission assembly, and a third transmission assembly. The first transmission assembly includes a first left small rope pulley, a second left small rope pulley, a left small steel wire rope, a first right small rope pulley, a second right small rope pulley, and a right small steel wire rope. The first left small rope pulley and the second left small rope pulley are respectively fixed to the left and right sides of the upper end of the left slow shutter slide. The left small steel wire rope is wound on the first left small rope pulley and the second left small rope pulley, and one side of the left small steel wire rope is connected to the left middle door slide plate, and the other side is fixedly connected to the body through the pressure block. The first right small rope pulley and the second right small rope pulley are respectively fixed on the left and right sides of the upper end of the right slow shutter slide. The right small steel wire rope is wound around the first right small rope pulley and the second right small rope pulley. One side of the right small steel wire rope is connected to the right middle door slide, and the other side is fixedly connected to the body through a pressure block.

3. A three-fold floor door device in a linear guide rail according to claim 2, characterized in that: The second transmission assembly includes a first middle rope pulley, a second middle rope pulley, a first middle steel wire rope, a third middle rope pulley, a fourth middle rope pulley, and a second middle steel wire rope. The first middle rope pulley and the second middle rope pulley are respectively fixed to the left and right sides of the upper end of the left middle door slide. The first middle wire rope is wound on the first middle rope pulley and the second middle rope pulley, and one side of the first middle wire rope is connected to the left shutter slide plate, and the other side is fixedly connected to the left middle shutter slide plate through the pressure block; The third and fourth middle rope pulleys are respectively fixed to the left and right sides of the upper end of the right middle door slide plate. The second middle steel wire rope is wound around the third and fourth middle rope pulleys, and one side of the second middle steel wire rope is connected to the right shutter slide plate, while the other side is fixedly connected to the right middle door slide plate through a pressure block.

4. A three-fold floor door device in a linear guide rail according to claim 3, characterized in that: The third transmission assembly includes a left large rope pulley, a right large rope pulley, and a large steel wire rope. The left and right large rope pulleys are arranged symmetrically from left to right and are both fixed to the body by screws. The large steel wire rope is wound around the left and right large rope pulleys, and one side of the large steel wire rope is fixedly connected to the right shutter slide plate, while the other side is fixedly connected to the left shutter slide plate through a pressure block.

5. A three-fold floor door device in a linear guide rail according to claim 4, characterized in that: Two first upper pulleys are fixedly installed on both the left and right slow shutter slide plates, and two first lower pulleys are detachably connected to each other by nuts. The first upper pulleys are set to fit against the upper side of the first double R guide rail, and the first lower pulleys are set to fit against the lower side of the first double R guide rail. Both the first upper pulleys and the first lower pulleys slide in cooperation with the first double R guide rail. Two second upper pulleys are fixedly installed on both the left and right middle door sliding plates, and two second lower pulleys are detachably connected to each other by nuts. The second upper pulleys are set to fit against the upper side of the second double R guide rail, and the second lower pulleys are set to fit against the lower side of the second double R guide rail. Both the second upper pulleys and the second lower pulleys slide in cooperation with the second double R guide rail. The left slow shutter slide, right slow shutter slide, left middle shutter slide, and right middle shutter slide are all provided with inclined elongated holes. By adjusting the installation position of the first and second sliding rollers in the inclined elongated holes, the gaps between the first and second sliding rollers and the first and second double R guide rails, respectively, can be adjusted.

6. A three-fold floor door device in a linear guide rail according to claim 5, characterized in that: The left and right shutter slides are both fixedly connected and welded to the slider on the linear guide rail by countersunk screws to prevent displacement due to external forces. The lower ends of the left and right shutter slides are each equipped with two third sliding rollers, which are in close contact with the linear guide rail. The surface of the third sliding wheel is made of plastic material to ensure smooth operation, reduce noise, and prevent the door panel from tilting when subjected to external impact.

7. A three-fold floor door device in a linear guide rail according to claim 1, characterized in that: The device also includes a reset assembly, which is a reset spring. One end of the reset spring is connected to the left middle door sliding plate, and the other end is connected to the main body.

8. A three-fold floor door device in a linear guide rail according to claim 7, characterized in that: The reset assembly is a reset hammer. A reset pulley is fixedly installed on one side of the main body. The reset hammer includes a hammer component and a hammer wire rope. One end of the hammer wire rope is connected to the hammer component, and the other end passes around the reset pulley and is fixedly connected to the left middle door slide plate.

9. A three-fold floor door device in a linear guide rail according to claim 6, characterized in that: The left and right shutter slides are equipped with adjusting components for adjusting the tension of the large steel wire rope, the first small steel wire rope, or the second small steel wire rope.

10. A three-fold floor door device in a linear guide rail according to claim 9, characterized in that: The left slow shutter skateboard, right slow shutter skateboard, left middle shutter skateboard, and right middle shutter skateboard are all designed with an extended length to eliminate skateboard wobbling during operation.

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