A follow-up fully sealed lifting platform door driving column

Abstract

The present invention discloses a follow-up fully sealed lifting platform door driving column, which belongs to the technical field of rail transit platform doors. It forms a sealing curtain that closes the full length of the long strip hole in the column by arranging a follow-up sealing mechanism in the column body of the driving column, and utilizes the combination of two winding and unwinding units, two follow-up sealing curtains and a connecting sealing curtain to form a sealing curtain in the column body that closes the full length of the long strip hole, and realizes the follow-up sealing of the long strip hole in the process of lifting the platform door by automatically winding and unwinding the two follow-up sealing curtains. The lifting platform door driving column in the present invention has a simple structure and high control accuracy, and can realize the follow-up sealing of the long strip hole of the column body of the driving column in the process of lifting the platform door, while ensuring the accuracy of the lifting and lowering control of the platform door, always ensuring the sealing of the long strip hole, effectively improving the dustproof and waterproof effect of the driving column, ensuring the reliable setting and stable operation of the equipment components in the column body, extending the service life of the lifting platform door system, and reducing the operation and maintenance costs of the system, which has excellent practical value.

Description

Technical Field

[0001] The invention belongs to the technical field of rail transit platform doors, and in particular relates to a follow-up fully sealed lifting platform door driving column. Background Art

[0002] Platform doors are widely used in railway and urban rail transit projects. They can effectively isolate the passenger waiting area and the train track area, prevent people and objects from entering the track area, and ensure the safety of passengers and trains.

[0003] In recent years, with the continuous development of the multi-network integration model of rail transit, in order to meet the engineering needs of various and complex vehicle types, new requirements have been put forward for the platform door system on the train stop platform. For conventional double-leaf platform door systems, the door opening position is often fixed and the door opening range is limited. It is usually only applicable to rail transit forms with certain vehicle types such as light rail and subway. It is often not perfectly applicable to rail transit forms with more vehicle types. For this reason, researchers began to focus on platform door systems with stronger adaptability and larger door opening range to meet the increasingly stringent application needs of platform doors. The lifting platform door came into being under this opportunity.

[0004] For the existing lifting platform door system, it usually includes two lifting driving columns and a platform door arranged between the two columns. By using the corresponding connection between the driving components in the two lifting driving columns and the two ends of the platform door, the platform door can be vertically lifted and lowered under the drive of the driving components, thereby completing the normal operation of the lifting platform door system. Due to the need for vertical lifting movement of the platform door, a long strip hole extending vertically needs to be opened on at least one side of the driving column to ensure that the connection mechanism between the lifting component and the platform door can extend from the long strip hole and reciprocate vertically.

[0005] In addition, for the lifting platform door system, the lifting column is usually provided with a lifting assembly and related electronic components and corresponding control cables for the normal operation of the lifting assembly. The internal structure of the column is complex and the inspection and maintenance process is cumbersome. At the same time, the use environment of the lifting column is relatively complex, and it is often used in outdoor environments. Its normal operation is affected by multiple environmental factors and human factors. However, for the driving column in the prior art, it often does not set shielding or sealing measures for the vertical slots on the driving column, which makes it easy for impurities such as rain, snow, dust, and garbage to enter the driving column through the long holes, affecting the normal operation of the driving column. For this reason, how to improve the dust and water resistance standards of the driving column of the lifting platform door has become a key concern in the industry and a problem that needs to be solved urgently. Summary of the invention

[0006] In response to one or more of the above defects or improvement needs in the prior art, the present invention provides a follow-up fully sealed lifting platform door driving column, which can achieve follow-up sealing when the lifting components of the driving column are working normally, improve the dust and water proof standards of the driving column, and ensure the reliability and stability of the driving column.

[0007] To achieve the above-mentioned purpose, the present invention provides a follow-up fully sealed lifting platform door driving column, comprising a column body and a lifting assembly arranged in the column body; a long hole is vertically opened on the surface of the column body, and the lifting assembly is connected to one end of the platform door through a platform door connecting assembly passing through the long hole;

[0008] A follow-up sealing mechanism is also provided in the column;

[0009] The follow-up sealing mechanism includes a first retractable and reeling unit disposed at the top of the column and a second retractable and reeling unit disposed at the bottom of the column, which are used for automatically reeling the first follow-up sealing curtain and the second follow-up sealing curtain respectively;

[0010] A connecting sealing curtain is provided at the connecting position corresponding to the platform door connecting assembly, and the connecting sealing curtain and each follower sealing curtain have one end surface facing the long hole, and the width of each sealing curtain is greater than the opening width of the long hole;

[0011] The platform door connecting component passes through the connecting sealing curtain and is connected with it, and the upper and lower ends of the connecting sealing curtain are respectively connected to the free ends of the first follow-up sealing curtain and the second follow-up sealing curtain, forming a sealing curtain that extends vertically and always separates the space inside the column from the space outside the long hole; then, the connecting sealing curtain can follow the platform door connecting component to rise and fall vertically along the extension direction of the long hole, and when the connecting sealing curtain is raised and lowered vertically, the two follow-up sealing curtains are correspondingly rolled up and released, so that any position in the length direction of the long hole is always closed by the sealing curtain, thereby realizing the follow-up full sealing when the driving column is working.

[0012] As a further improvement of the present invention, sealing guide rails extending vertically are respectively provided on both sides of the width direction of the elongated hole;

[0013] The sealing guide rail is installed on the inner wall surface of the column, and its cross section is C-shaped. The opening sides of the two sealing guide rails are arranged opposite to each other. The two sides of the width direction of the sealing curtain connected as a whole and extending vertically are respectively embedded in the sealing guide rails.

[0014] As a further improvement of the present invention, a sealing strip is provided on at least one end face of the sealing guide rail corresponding to the sealing curtain, so as to seal the end face of the sealing curtain when the sealing curtain moves vertically up and down.

[0015] As a further improvement of the present invention, at least one winding and unwinding unit is a spiral spring box;

[0016] The spiral spring box includes a spring box body and a spiral spring drum arranged in the spring box body; a prestressed spring is arranged in the spiral spring drum, and the corresponding follow-up sealing curtain is connected to the spiral spring drum with its end and is wound on the outer circumference of the spiral spring drum.

[0017] As a further improvement of the present invention, a torque sensor is provided at the end of the spiral mainspring drum, which is directly connected to the shaft of the spiral mainspring drum and is used for real-time detection of the tension exerted on the mainspring spring.

[0018] As a further improvement of the present invention, a stroke scale is provided on the end face of at least one follower sealing curtain, and an identification probe is provided corresponding to the stroke scale, so that the identification probe can detect the movement stroke of the follower sealing curtain in real time by optical recognition.

[0019] As a further improvement of the present invention, a counterweight assembly is also provided in the column;

[0020] The counterweight assembly includes a retaining frame extending vertically and a balancing block freely mounted on the retaining frame, and a connecting line and a plurality of guide wheels are provided corresponding to the balancing block; the guide wheel is rotatably connected to the top of the column, the connecting line passes around a plurality of guide wheels, and its two ends are respectively connected to the balancing block and the platform door connecting assembly.

[0021] As a further improvement of the present invention, long holes are respectively opened vertically on both longitudinal sides of the column, and two sets of lifting components are arranged in the column, and follow-up sealing mechanisms are respectively arranged corresponding to the two long holes in the column, so that the two longitudinal sides of the column can be respectively connected to the platform doors and realize the follow-up sealing of the two longitudinal sides of the column when the two platform doors are lifted and lowered.

[0022] As a further improvement of the present invention, the two platform doors on both sides of the column in the longitudinal direction share the same counterweight assembly, and the platform door connecting assemblies of the two platform doors are respectively connected to the balance block by connecting lines.

[0023] As a further improvement of the present invention, a drain cleaning box is provided below the second winding and unwinding unit for collecting and discharging water and impurities in the column.

[0024] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0025] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

[0026] (1) The driving column of the present invention has a follow-up fully sealed lifting platform door. By arranging a follow-up sealing mechanism in the column body of the driving column, a sealing curtain that closes the entire length of the long hole is formed in the column body by utilizing the combination of two winding and unwinding units, two follow-up sealing curtains and a connecting sealing curtain. The two follow-up sealing curtains are automatically wound and unwound to achieve follow-up sealing of the long hole during the lifting process of the platform door, effectively ensuring the sealing isolation between the internal space of the column and the external space, preventing water and impurities outside the column from entering the column body through the long hole, ensuring the reliability and stability of the arrangement and operation of various equipment and components in the column, extending the service life of the platform door system, and ensuring the safe and normal operation of the lifting platform door system.

[0027] (2) The follow-up fully sealed lifting platform door driving column of the present invention can effectively achieve the sealing between the two sides of the sealing curtain in the width direction and the inner wall surface of the column by respectively arranging sealing guide rails on both sides of the width direction of the long strip hole, and arranging sealing strips on both sides of the width direction of the sealing curtain in the sealing guide rails, thereby further improving the sealing effect of the sealing curtain and the follow-up full sealing of the platform door system.

[0028] (3) The follow-up fully sealed lifting platform door driving column of the present invention can detect the tension borne by the spring in real time by preferably setting the structural form of the winding and unwinding unit as a spiral spring box, and setting a torque sensor in the spiral spring box corresponding to the spiral spring drum; at the same time, by setting a stroke scale on the follow-up sealing curtain and setting an identification probe corresponding to it, the identification probe can optically detect the movement stroke of the follow-up sealing curtain in real time, and the torque sensor can electrically detect the tension borne by the spring, so as to realize the photoelectric self-detection of the follow-up sealing mechanism, ensure that its working state is always within the normal range, thereby ensuring the reliability and safety of the entire driving column and even the lifting platform door system.

[0029] (4) The follow-up fully sealed lifting platform door driving column of the present invention has a counterweight assembly arranged in the column body to balance at least part of the gravity transmitted from the platform door to the lifting assembly via the platform door connecting assembly, thereby effectively reducing the driving force requirements of the driving unit in the lifting assembly, saving energy, and indirectly improving the safety and reliability of the lifting platform door arrangement.

[0030] (5) The follow-up fully sealed lifting platform door driving column of the present invention, by arranging a drain cleaning box below the second winding and unwinding unit, can collect and discharge the water and impurities entering the interior of the column by utilizing the optimization of its structure and position, thereby ensuring the reliability of the working environment of the internal space of the column; at the same time, by utilizing the corresponding arrangement of two lifting components and two follow-up sealing mechanisms in the same column, the ground space of the platform can be effectively saved, the distance between two adjacent platform doors can be shortened, and the functionality of the lifting platform door system can be further improved.

[0031] (6) The follow-up fully sealed lifting platform door driving column of the present invention has a simple structure and high control accuracy. It can realize the follow-up sealing of the long strip holes of the column body of the driving column during the lifting process of the platform door, ensuring the accuracy of the lifting control of the platform door while always ensuring the sealing of the long strip holes, effectively improving the dust and water proof effect of the driving column, ensuring the reliable setting and stable operation of the equipment components in the column, extending the service life of the lifting platform door system, and reducing the operation and maintenance costs of the system. It has good practical value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 is a schematic diagram of a case where platform doors are mounted on both longitudinal sides of a driving column in an embodiment of the present invention;

[0034] Figure 2 is a schematic diagram of a driving column in an embodiment of the present invention when a platform door is mounted on one side in the longitudinal direction;

[0035] Figure 3 It is a partial enlarged view of the bottom end of the driving column of the follow-up fully sealed lifting platform door in the embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of the side structure of the driving column of the follow-up fully sealed lifting platform door in an embodiment of the present invention;

[0037] Figure 5 , Figure 6 It is a schematic diagram of the combined assembly of the stud suspension handle, the sealing curtain and the sealing guide rail of the driving column in an embodiment of the present invention;

[0038] Figure 7 It is a schematic diagram of the matching combination of the retracting and unreeling mechanism, the sealing guide rail and the sealing curtain in an embodiment of the present invention;

[0039] Figure 8 is a horizontal cross-sectional view of a driving column at a stud suspension handle in an embodiment of the present invention;

[0040] Fig. 9 is a horizontal cross-sectional view of a driving column at a first follower sealing curtain in an embodiment of the present invention;

[0041] Fig.10 is a flow chart of travel monitoring and fatigue monitoring of a driving column of a lift platform door in an embodiment of the present invention;

[0042] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0043] 1. First rewinding and unwinding unit; 2. Guide wheel; 3. Connecting wire; 4. Balance block; 5. Cage; 6. Sealing guide rail; 7. First follow-up sealing curtain; 8. Column; 9. Lead screw; 10. First stud hanging handle; 11. Connecting sealing curtain; 12. Second stud hanging handle; 13. Second follow-up sealing curtain; 14. Second rewinding and unwinding unit; 15. Driving motor; 16. Fixed connecting piece; 17. Splicing piece; 18. Platform door; 19. Identification probe; 20. Drain cleaning box;

[0044] 121, screw sleeve; 122, hanging handle; 123, connecting hole;

[0045] 701, first stroke scale; 131, second stroke scale;

[0046] 141. Spring box; 142. Spiral spring drum; 143. Torque sensor;

[0047] 201. Clean the flap. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] Example:

[0054] See also Figures 1 to 9 In a preferred embodiment of the present invention, the follow-up fully sealed lifting platform door driving column includes a box-shaped column 8 with an accommodating space formed inside, and a lifting assembly including a driving unit and a lifting unit is arranged in the column 8, and a long hole is vertically opened on one side of the column 8, so that the platform door connecting assembly connected to the lifting unit at one end can extend from the long hole and be connected to one end of the platform door 18 with its end, so that the lifting unit can drive the platform door 18 to perform vertical lifting under the drive of the driving unit, thereby completing the opening and closing control of the lifting platform door.

[0055] Specifically, the driving unit for driving the column in the preferred embodiment is a spiral screw assembly, which includes a screw 9 extending vertically and a drive motor 15 corresponding to the screw 9. The drive motor 15 is preferably arranged at the bottom of the column 8, and is further preferably connected to the ground through a connecting bolt, and one end of the screw 9 is matched and connected to the output end of the drive motor 15, and the other end is movably connected to the top of the column 8, and then the screw 9 can be driven by the drive motor 15 to realize the rotation of the screw 9 around the axis.

[0056] Correspondingly, the lifting unit of the lifting assembly in the preferred embodiment is a stud hanger that is spirally matched and sleeved on the outer periphery of the screw 9. The stud hanger includes a screw sleeve 121 and a hanger 122 with one end connected to the screw sleeve 121 and the other end extending out of a long hole. The screw sleeve 121 is threadably matched with the screw 9, so that the rotation of the screw 9 can convert the vertical lifting movement of the screw sleeve 121.

[0057] It can be understood that in the preferred embodiment, the above-mentioned hanging handle 122 also serves as a part of the platform door connecting component of the lifting component connected to the platform door 18.

[0058] In actual configuration, the suspension handles 122 are preferably arranged in a plurality of vertical intervals, for example Figure 3 The two shown in the figure, namely the first stud hanger 10 and the second stud hanger 12, are respectively connected to the upper and lower sides of one end of the platform door 18 by the two stud hangers to ensure the reliability of the connection setting of the platform door 18.

[0059] In more detail, the screw sleeve 121 in the preferred embodiment is preferably arranged in a one-to-one correspondence with the suspension handle 122, such as Figure 5 As shown in , each screw sleeve 121 is distributed and matched on the outer periphery of the lead screw 9. Of course, it is understandable that multiple suspension handles 122 can be simultaneously connected and set on one side of the same screw sleeve 121, and it is only necessary to set the length of the screw sleeve 121 corresponding to the interval of the multiple suspension handles 122, which will not be repeated here.

[0060] Preferably, in order to save power of the driving motor 15, a counterweight assembly is preferably provided in the column 8, which includes a retaining frame 5 extending vertically and a balancing block 4 freely mounted on the retaining frame 5 (which can fall freely after the constraint of the connecting line 3 is released). The balancing block 4 serves as a counterweight for the driving column, and is used to balance part of the weight of the platform door 18, thereby reducing the power requirement for the driving motor 15.

[0061] Specifically, in the preferred embodiment, a connecting line 3 and a plurality of guide wheels 2 are provided corresponding to the balancing block 4. The guide wheel 2 is rotatably connected to the top of the column 8, and is used for guiding the connecting line 3 after it is passed around; the connecting line 3 is further preferably a steel wire rope, one end of which is connected to the balancing block 4, and the other end of which is passed around a plurality of guide wheels 2 and connected to the platform door connection assembly, such as the hanging handle 122 in the preferred embodiment, for balancing part of the weight of the platform door 18 transmitted to the screw sleeve 121 via the hanging handle 122.

[0062] Further preferably, long holes are respectively opened on both longitudinal sides of a driving column, and two sets of the aforementioned lifting components are arranged in the column 8, so that the platform doors 18 can be assembled on both sides of the same driving column respectively, thereby reducing the number of driving columns, saving the ground space of the platform, and shortening the distance between two adjacent platform doors 18.

[0063] For the case where the two lifting assemblies are symmetrically arranged in the column 8, the counterweight assembly in the preferred embodiment is further preferably arranged between the lead screws 9 of the two lifting assemblies, and the two lifting assemblies further preferably share the same counterweight assembly, such as Figure 2As shown in , at this time, the relative weight of the two platform doors 18 can be balanced by changing the weight of the balancing block 4.

[0064] Of course, in addition to the above-mentioned situation of sharing the counterweight assembly, counterweight assemblies can also be respectively provided for the two lifting assemblies in the same column 8. This can be optimally designed according to actual needs and will not be elaborated here.

[0065] Furthermore, if Figure 1 , Figure 2 As shown in the figure, a follow-up sealing mechanism is provided in the corresponding long strip hole on the driving column, which includes a first retractable winding unit 1 arranged at the top of the column 8 and a second retractable winding unit 14 arranged at the bottom of the column 8. The two retractable winding units are respectively used for automatic reeling of the follow-up sealing curtain, and can be pulled out from the corresponding retractable winding unit when the follow-up sealing curtain is subjected to tension.

[0066] Specifically, in the preferred embodiment, the first unwinding and rewinding unit 1 is arranged above the top of the long hole, and the second unwinding and rewinding unit 14 is arranged below the bottom of the long hole, so that the follow-up sealing curtains pulled out from the two unwinding and rewinding units can reliably seal both ends of the long hole. At the same time, the width of the follow-up sealing curtain is greater than the opening width of the long hole, so as to ensure that the follow-up sealing curtain can seal both sides of the long hole in the width direction.

[0067] Furthermore, the follow-up sealing curtain is arranged between the lead screw 9 and the long strip hole. For this reason, the arrangement of the platform door connection assembly will interfere with the vertical extension of the follow-up sealing curtain in the vertical direction. In this regard, in a preferred embodiment, a connecting sealing curtain 11 is arranged at the connection position corresponding to the platform door connection assembly, such as Figure 4 As shown in FIG. , it extends vertically, and its vertical extension length is greater than the vertical width of the platform door connection assembly (as shown in FIG. Figure 4 In the preferred embodiment shown in FIG, the vertical maximum distance between the two suspension handles 122 is such that the two ends of the connecting sealing curtain 11 can extend from the upper and lower sides of the platform door connecting assembly, and are respectively connected to the free ends of the follow-up sealing curtains (i.e., the first follow-up sealing curtain 7 and the second follow-up sealing curtain 13) drawn from the two retracting and unwinding units, as shown in FIG. Figure 4 as shown in .

[0068] In actual configuration, a through hole for the platform door connection assembly to pass through is provided on the connecting sealing curtain 11, and in a preferred embodiment, it corresponds to two through holes for the two hanging handles 122 to pass through horizontally. At the same time, in a preferred embodiment, a splicing piece 17 is provided corresponding to the connection between the first follow-up sealing curtain 7 and one end of the connecting sealing curtain 11, and the connection between the second follow-up sealing curtain 13 and the other end of the connecting sealing curtain 11, so as to ensure a reliable connection between each follow-up sealing curtain and the connecting sealing curtain 11. Through the connection between the two follow-up sealing curtains and the connecting sealing curtain 11, each part in the extension direction of the long hole is blocked by the follow-up sealing curtain, so as to achieve the effect of blocking and sealing.

[0069] It should be noted that the above-mentioned "seal" is only a relative seal, not an absolute seal. In order to improve the sealing effect of the follower seal mechanism, it is further preferred to provide a supplementary seal at the opening of the sealing curtain 11, such as an elastic sealing material sleeved on the outer periphery of the suspension handle 122, to form a gap seal at the opening.

[0070] More specifically, the connecting sealing curtain 11 in the preferred embodiment is fixedly connected to the platform door connecting assembly to ensure the accuracy of the setting position of the connecting sealing curtain 11 and avoid relative displacement between the connecting sealing curtain 11 and the platform door connecting assembly.

[0071] Furthermore, double-sided sealing components are provided corresponding to the sealing between the two sides of the width direction of the corresponding follow-up sealing curtains (the first follow-up sealing curtain 7 / the connecting sealing curtain 11 / the second follow-up sealing curtain 13) and the inner wall surface of the column 8. Specifically, the double-sided sealing components in the preferred embodiment include sealing guide rails 6 arranged in pairs and extending vertically, and the cross-sections of the two sealing guide rails 6 are "C-shaped" and are respectively installed on the inner wall surface of the column 8 on both sides of the width direction of the long strip hole. At the same time, the opening sides of the two sealing guide rails 6 are arranged opposite to each other, and the distance between the two sealing guide rails 6 is equal to or slightly larger than the width of the follow-up sealing curtain, so that the two sides of the width direction of the follow-up sealing curtain can be respectively embedded in the two sealing guide rails 6, and vertical lifting and lowering can be achieved under the guidance of the two sealing guide rails 6.

[0072] In more detail, a sealing strip extending in the vertical direction is provided in the two sealing rails 6 corresponding to the follow-up sealing curtain, so that when the follow-up sealing curtain moves vertically, at least one end face of the follow-up sealing curtain is pressed tightly and sealed by the sealing strip (the same is true for the connecting sealing curtain 11). In a preferred embodiment, the aforementioned sealing strips are two oppositely arranged, and the two sealing strips are respectively arranged vertically on the inner wall surface of the sealing rail 6, so that the edge of the follow-up sealing curtain is embedded between the two sealing strips, thereby achieving sealing on both sides of the width direction of the follow-up sealing curtain, such as Figure 8 , Fig. 9 as shown in .

[0073] More specifically, at least one rewinding and unwinding unit in the preferred embodiment is as follows Figure 7The spiral spring box shown in the figure, for example, both winding and unwinding units are spiral spring boxes. The spiral spring box includes a spring box body 141 and a spiral spring drum 142 disposed in the spring box body 141, and a prestressed spring spring is disposed in the spiral spring drum 142. At the same time, the follower sealing curtain of each winding and unwinding unit is connected to the spiral spring drum 142 with its end and is wound around the outer periphery thereof.

[0074] The prestress of the spring in the spiral spring drum 142 can realize the automatic winding of the follow-up sealing curtain when it is not subjected to external force. At the same time, under a certain external force, the prestress of the spring can be overcome, and the corresponding follow-up sealing curtain can be continuously pulled out from the spring box 141, thereby realizing the follow-up sealing of the long hole of the column 8.

[0075] Obviously, in actual operation, the retracted and unreeled states of the first follower sealing curtain 7 and the second follower sealing curtain 13 are related to the real-time position of the connecting sealing curtain 11. When the connecting sealing curtain 11 is in the middle and lower part of the long hole, the first follower sealing curtain 7 is in a mostly released state, and the second follower sealing curtain 13 is in a mostly reeled state; conversely, when the connecting sealing curtain 11 is in the middle and upper part of the long hole, the first follower sealing curtain 7 is mostly in a reeled state, and the second follower sealing curtain 13 is mostly in a released state.

[0076] Obviously, the release and reeling of the two follower sealing curtains are closely related to the movement direction of the connecting sealing curtain 11. When it moves upward, the first reeling and unreeling unit 1 reels and the second reeling and unreeling unit 14 releases; vice versa.

[0077] In actual configuration, the rolling limit position of the first follower sealing curtain 7 and / or the second follower sealing curtain 13 is exactly the connection position of the respective end joint pieces 17 .

[0078] Preferably, if Figure 3 , Figure 4 As shown in the figure, a drain cleaning box 20 is arranged at the bottom of the column 8, which is further preferably arranged below the second winding and unwinding unit 14, so that the water entering the column 8 through the surface of the follower sealing curtain can flow into the drain cleaning box 20 under the action of its own weight.

[0079] Accordingly, the bottom surface of the drain cleaning box 20 is preferably tilted, and the side close to the surface of the column 8 is preferably lower than the setting height of the other side, so that the water and impurities in the drain cleaning box 20 can automatically move to the side close to the surface of the column 8.

[0080] In more detail, a cleaning flap 201 that can be rotated and opened from the outside is provided on the outer side of the column 8 corresponding to the drain cleaning box 20, and a drainage hole is provided at the bottom of the cleaning flap 201, which can automatically drain the collected water in the drain cleaning box 20 and realize the rapid cleaning of impurities in the drain cleaning box 20 after opening the cleaning flap 201.

[0081] Further preferably, in order to accurately know the moving position of the follow-up sealing curtain, that is, to accurately know the vertical position of the platform door 18, it is also preferred that at least one follow-up sealing curtain is marked with a travel scale along its length direction. For example, in a preferred embodiment, a first travel scale 701 is provided on the surface of the first follow-up sealing curtain 7 close to the long hole, and a second travel scale 131 is provided on the surface of the second follow-up sealing curtain 13 close to the long hole. Figure 4 At this time, the edges at both ends of the long hole in the length direction can be used as marking lines, and the positions of the two follow-up sealing curtains can be accurately read with reference to them, so as to accurately determine the working state of the platform door 18.

[0082] In more detail, in order to realize real-time automatic acquisition of the working position of the follow-up sealing curtain, an identification probe 19 is provided corresponding to at least one travel scale in the preferred embodiment. The viewing angle of the identification probe 19 corresponds to the corresponding travel scale, so that the identification probe 19 can collect the travel scale on the follow-up sealing curtain in real time, and then monitor the travel of the follow-up sealing curtain and the position of the platform door 18 in real time.

[0083] In order to ensure the reliability and stability of the setting and operation of the identification probe 19, it is further arranged inside the column 8. At this time, the stroke scale is arranged on the end face of the follow-up sealing curtain away from the long strip hole.

[0084] In a specific preferred embodiment, the end surfaces of the two follow-up sealing curtains facing away from the long strip hole are respectively provided with travel scales, and identification probes 19 are respectively provided corresponding to the two travel scales, so that the identification probes 19 can detect the movement travel of the follow-up sealing curtain in real time by optical identification. At the same time, at least one of the two winding and unwinding units is a spiral spring box, and a torque sensor 143 is provided at the end of the spiral spring drum 142 of at least one spiral spring box. The torque sensor 143 is directly connected to the shaft of the spiral spring drum 142 and is used to detect the tension of the spring spring in real time.

[0085] By using the above-mentioned corresponding design of the identification probe 19 and the corresponding stroke scale, the stroke of the follow-up sealing curtain and the position of the platform door 18 can be monitored in real time, and then it can be determined whether the follow-up sealing curtain is effectively sealed, and whether the platform door 18 is running according to the driving command. At the same time, by using the corresponding setting of the torque sensor 143, based on the stroke data of the follow-up sealing curtain during the lifting and lowering of the platform door 18, the force curve of the spiral spring when the platform door 18 is lifted to different positions can be drawn to monitor the working status of each spiral spring.

[0086] As the service time of the equipment accumulates, the spiral spring may suffer fatigue damage. By comparing it with the initial stress curve, the fatigue strength state of the spiral spring can be accurately determined. When the spiral spring is judged to be over-fatigued, that is, the spiral spring has reached the end of its service life, maintenance personnel can replace it.

[0087] In actual operation, the logical flow of the spiral spring fatigue monitoring function formed based on the optical detection of the identification probe 19 and the electrical detection of the torque sensor 143 is as follows: Fig.10 As shown in , based on the cooperative work of the identification probe 19 and the torque sensor 143, photoelectric self-detection of the spiral spring can be achieved.

[0088] Further preferably, each follow-up sealing curtain and the connecting sealing curtain 11 in the preferred embodiment are made of a material with high flexibility, smoothness, and corrosion resistance, and have the advantages of being light, thin, not easy to break, and having good elasticity. In addition, in actual setting, the column 8 in the preferred embodiment is preferably connected to the ground of the platform by a plurality of fixed connectors 16, and the fixed connectors 16 are further preferably connecting bolts.

[0089] In addition, in the preferred embodiment, the ends of the platform door 18 corresponding to the connection holes 123 at the ends of the respective hanging handles 122 are respectively provided with connecting plates, so that the hanging handles 122 and the corresponding connecting plates can be reliably connected through a plurality of connecting members, such as Figure 3 as shown in .

[0090] The follow-up fully sealed lifting platform door driving column of the present invention has a simple structure and high control accuracy. It can realize the follow-up sealing of the long strip holes of the column body of the driving column during the lifting process of the platform door, thereby ensuring the accuracy of the lifting control of the platform door while always ensuring the sealing of the long strip holes, effectively improving the dust and water proof effect of the driving column, ensuring the reliable setting and stable operation of the equipment components in the column, extending the service life of the lifting platform door system, reducing the operation and maintenance costs of the system, and having good practical value and application prospects.

[0091] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A follow-up fully sealed lifting platform door driving column, comprising a column and a lifting assembly arranged in the column; a long hole is vertically opened on the surface of the column, and the lifting assembly is connected to one end of the platform door through a platform door connecting assembly passing through the long hole; characterized in that: A follow-up sealing mechanism is also provided in the column; The follow-up sealing mechanism includes a first retractable and reeling unit disposed at the top of the column and a second retractable and reeling unit disposed at the bottom of the column, which are used for automatically reeling the first follow-up sealing curtain and the second follow-up sealing curtain respectively; A connecting sealing curtain is provided at the connecting position corresponding to the platform door connecting assembly, and the connecting sealing curtain and each follower sealing curtain have one end surface facing the long hole, and the width of each sealing curtain is greater than the opening width of the long hole; The platform door connecting component passes through the connecting sealing curtain and is connected with it, and the upper and lower ends of the connecting sealing curtain are respectively connected to the free ends of the first follow-up sealing curtain and the second follow-up sealing curtain, forming a sealing curtain that extends vertically and always separates the space inside the column from the space outside the long hole; then, the connecting sealing curtain can follow the platform door connecting component to rise and fall vertically along the extension direction of the long hole, and when the connecting sealing curtain is raised and lowered vertically, the two follow-up sealing curtains are correspondingly rolled up and released, so that any position in the length direction of the long hole is always closed by the sealing curtain, thereby realizing the follow-up full sealing when the driving column is working.

2. The follow-up fully sealed lifting platform door driving column according to claim 1 is characterized in that: Sealing guide rails extending vertically are respectively arranged on both sides of the elongated hole in the width direction; The sealing guide rail is installed on the inner wall surface of the column, and its cross section is C-shaped. The opening sides of the two sealing guide rails are arranged opposite to each other. The two sides of the width direction of the sealing curtain connected as a whole and extending vertically are respectively embedded in the sealing guide rails.

3. The follow-up fully sealed lifting platform door driving column according to claim 2 is characterized in that: A sealing strip is provided on at least one end surface of the sealing guide rail corresponding to the sealing curtain, so that the sealing strip can press against the end surface of the sealing curtain for sealing when the sealing curtain moves vertically up and down.

4. The follow-up fully sealed lifting platform door driving column according to any one of claims 1 to 3, characterized in that: At least one of the winding and unwinding units is a spiral spring box; The spiral spring box includes a spring box body and a spiral spring drum arranged in the spring box body; a prestressed spring is arranged in the spiral spring drum, and the corresponding follow-up sealing curtain is connected to the spiral spring drum with its end and is wound on the outer circumference of the spiral spring drum.

5. The follow-up fully sealed lifting platform door driving column according to claim 4 is characterized in that: A torque sensor is arranged at the end of the spiral spring drum, which is directly connected to the shaft of the spiral spring drum and is used for real-time detection of the tension exerted on the spring.

6. The follow-up fully sealed lifting platform door driving column according to claim 5 is characterized in that: A stroke scale is arranged on the end surface of at least one follow-up sealing curtain, and an identification probe is arranged corresponding to the stroke scale, so that the identification probe can detect the movement stroke of the follow-up sealing curtain in real time by optical identification.

7. The follow-up fully sealed lifting platform door driving column according to any one of claims 1 to 3, 5 and 6, characterized in that: A counterweight assembly is also provided in the column; The counterweight assembly includes a retaining frame extending vertically and a balancing block freely mounted on the retaining frame, and a connecting line and a plurality of guide wheels are provided corresponding to the balancing block; the guide wheel is rotatably connected to the top of the column, the connecting line passes around a plurality of guide wheels, and its two ends are respectively connected to the balancing block and the platform door connecting assembly.

8. The follow-up fully sealed lifting platform door driving column according to claim 7 is characterized in that: The column body is provided with long holes in the vertical direction on both longitudinal sides, and two sets of lifting components are arranged in the column body, and follow-up sealing mechanisms are respectively arranged corresponding to the two long holes in the column body, so that the two longitudinal sides of the column body can be connected to the platform doors respectively and realize the follow-up sealing of the longitudinal sides of the column body when the two platform doors are lifted and lowered.

9. The follow-up fully sealed lifting platform door driving column according to claim 8 is characterized in that: The two platform doors on both sides of the column in the longitudinal direction share the same counterweight assembly, and the platform door connecting assemblies of the two platform doors are respectively connected to the balance block by connecting lines.

10. The follow-up fully sealed lifting platform door driving column according to any one of claims 1 to 3, 5, 6, 8, and 9, characterized in that: A drain cleaning box is provided below the second winding and unwinding unit for collecting and discharging water and impurities in the column.

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