Electric section sliding and telescopic linear door with composite transmission structure
By using a composite transmission structure of active gear and rack meshing and traction rope clamping device, the problems of space occupation and long opening and closing time of electric sliding telescopic linear gate are solved, realizing efficient, low-cost and durable gate movement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SHENGTIAN DOORS IND CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-05-29
AI Technical Summary
Existing electric sliding telescopic linear gates suffer from problems such as large space occupied by the drive motor head, long opening and closing time, complex structure, and high cost. In particular, the sprocket and chain drive mechanism are prone to damage and difficult to maintain.
The active device, which uses a matching meshing motion of a drive gear and a rack, and the driven device, which uses the upper and lower half-ring clamps of the traction rope, achieves synchronous, unidirectional, and equidistant movement of each gate, eliminating the need for a separate drive motor head and sprocket and chain mechanism.
It reduces the space and cost occupied by the door, improves the efficiency of opening and closing the door, has a simple and durable structure, reduces operating resistance and noise, avoids the maintenance problems of sprockets and chains, and extends the service life of the equipment.
Smart Images
Figure CN224300775U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gate technology, and in particular to an electric sliding telescopic linear gate with a composite transmission structure. Background Technology
[0002] Currently, electric sliding telescopic linear gates are widely used at large entrances and exits of squares, factories, buildings and other places. They are achieved by using a structure in which multiple segmented gates are arranged in sequence to extend or retract. When the entire gate is fully retracted, the gate components are almost parallel and stacked, which saves the width of the entrance and exit and parking space to the greatest extent.
[0003] Most existing electric sliding telescopic gates use a separate drive motor in front of the first gate to move, which drives each gate to extend or retract sequentially. This design has several drawbacks: ① The drive motor increases the overall width and parking space required for the gate; ② The drive motor's path needs to be guided by magnetic ground markers, or by guide rails laid on the ground for each gate; ③ The drive motor must complete the first gate's span before indirectly driving the next gate, and so on, resulting in a longer opening and closing time and reduced passage efficiency; ④ The separate drive motor increases overall cost.
[0004] Existing electric sliding telescopic linear gates also employ a sprocket and chain drive mechanism between every two gate sections to achieve simultaneous movement of each gate section, thereby saving time in opening and closing the gate. However, this method has the following disadvantages: ① It requires the installation of multiple sprockets and chain drive mechanisms, which not only makes the structure complex and cumbersome but also greatly increases the cost; ② The sprocket and chain drive mechanisms have problems such as difficult assembly, high running resistance, high operating noise, and high maintenance costs.
[0005] In addition, the existing electric sliding telescopic linear gates use a method where the drive motor is installed in an independent motor box at the front or rear. The disadvantages are that the independent motor box leads to the gate occupying a larger area and higher manufacturing and installation costs. Utility Model Content
[0006] The purpose of this utility model is to provide an electric sliding telescopic linear gate with a composite transmission structure, in order to solve the defects of existing electric sliding telescopic linear gates that require a drive motor head, or the drive motor requires an independent motor box at the front or rear, or a sprocket and chain drive mechanism to achieve synchronous transmission of each gate row.
[0007] The technical solution proposed by this utility model is as follows:
[0008] An electric sliding telescopic linear gate with a composite transmission structure includes a series of fixed columns, an initial fixed gate group, and at least two movable gate groups. Each gate group includes a rectangular gate grid that is off the ground and a grid support frame with rectangular borders on all four sides and a hollow center, equipped with grounded movable wheels. One end of the gate grid of each gate group is fixedly connected to its respective grid support frame at a right angle. The gate grids of each movable gate group can be matched and pass through the hollow center of the grid support frames of the preceding gate groups. Each grid support frame has a support pulley group with its lower border facing upwards. The support pulley group slides in match with a bottom guide rail with its bottom facing downwards located on the lower crossbeam of the gate grid of the next gate group that passes through the hollow center of the grid support frame. The top and bottom of each gate grid... Each movable gate is equipped with an upper crossbeam and a lower crossbeam, both of which have a side-opening hollow track cavity. Each movable gate's gate grille has a vertical beam at its other end. The upper and lower parts of the vertical beams are respectively equipped with outward-extending upper and lower guide pulley sets, which are matched and inserted into the side-opening hollow track cavities of the upper and lower crossbeams of the preceding gate for sliding and limiting movement to prevent detachment. The other end of the gate grille of the initial fixed gate is fixedly connected to a fixed column frame. The initial fixed gate moves in tandem with the adjacent first movable gate through a rack and pinion mechanism that meshes with a drive gear. The movable gates move synchronously in the same direction and at equal distances through upper and lower half-ring clamps on the traction rope, which follow the driven mechanism of the traction rope ring.
[0009] The active device includes a lateral rack disposed below the lower crossbeam of the initial fixed gate, and a motor and a drive gear driven by the motor disposed below the vertical beam of the gate grid of the adjacent first movable gate, the drive gear engaging with the lateral rack of the initial fixed gate.
[0010] The driven device includes a left traction wheel and a right traction wheel respectively installed at two ends in the side-opening hollow track cavity inside the lower crossbeam of the current moving gate. A closed and tensioned traction rope loop is wrapped around the left and right traction wheels. A lower half-loop clamping device for the traction rope is also installed on the supporting pulley block of the previous gate to clamp the lower half-loop clamping point on the traction rope loop of the current moving gate that matches the position of the supporting pulley block. Furthermore, an upper half-loop clamping device for the traction rope is also installed on the side-extending guide pulley block at the lower part of the vertical beam of the gate grid of the next gate to clamp the upper half-loop clamping point on the traction rope loop of the current moving gate that matches the position of the guide pulley block.
[0011] Each grille support frame is provided with a limiting pulley assembly facing downwards on its upper frame. The limiting pulley assembly matches and limits the movement of the upper crossbeam of the grille of the next gate row that passes through the central hollow part of the grille support frame.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] ① It is no longer necessary to set up a separate drive motor head in front of the first moving gate to drive each gate to extend or retract in turn, which reduces the width and parking space occupied by the entire gate and greatly saves costs.
[0014] ② A small motor is directly installed near the drive gear at the bottom of the vertical beam of the gate grille of the first moving gate, eliminating the need for an independent motor box at the front or rear of the entire gate, thus reducing the gate's footprint and manufacturing and installation costs.
[0015] ③ An active device using a matching meshing motion of a drive gear and rack is employed to move the first moving gate relative to the initial fixed gate. Between each moving gate, a driven device with upper and lower half-ring clamps on the traction rope, following the traction rope ring, ensures that the current moving gate drives the next moving gate to move synchronously, in the same direction, and at equal distances. This shortens the overall gate opening and closing time and improves passage efficiency. Furthermore, it eliminates the need for multiple sets of sprocket and chain drive mechanisms or a single sprocket and multiple chains between the moving gates. The composite transmission structure of the drive gear and rack, plus the traction rope ring and upper and lower half-ring clamps, offers advantages over sprocket and multiple chain drive mechanisms in terms of simple structure, easy installation, stability, durability, low operating resistance, low operating noise, and low maintenance costs. In particular, electric sliding telescopic gates are installed in large, open-air entrances and exits, exposed to sun, wind, and rain, and subjected to dust, sand, and gravel raised by pedestrians and vehicles. The sprockets and chains, being close to the ground, require ample lubrication but are also prone to trapping fine sand and gravel, causing damage or even jamming. Sun, wind, and rain also cause the lubricating oil to evaporate or run away, further increasing wear between the sprockets and chains. In actual use, this results in frequent malfunctions, short lifespan, troublesome maintenance, and high costs. In contrast, gears and racks, traction rope rings, and upper and lower half-ring clamps for the traction rope have a simple and durable structure. Dust, sand, and gravel do not accumulate in them, and lubrication is not even required. This completely avoids the aforementioned defects of sprockets and chains, demonstrating excellent durability in actual use. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the external structure of Embodiment 1 of this utility model in its fully extended state;
[0017] Figure 2This is a schematic diagram of the external structure of Embodiment 1 of this utility model in its fully extended state from another perspective;
[0018] Figure 3 This is a schematic diagram of the appearance structure of Embodiment 1 of this utility model in its fully retracted state from another perspective;
[0019] Figure 4 This is a schematic diagram of the structure of the lower crossbeam of the gate grille of the first movable gate in the fully extended state of Embodiment 1 of this utility model, with the left and right ends removed;
[0020] Figure 5 yes Figure 2 A magnified view of a portion of region A in the middle;
[0021] Figure 6 yes Figure 2 A magnified view of a portion of region B in the middle;
[0022] Figure 7 This is a schematic diagram of the structure of the first movable gate in this utility model with the lower crossbeam at both ends of the gate grille removed;
[0023] Figure 8 This is a schematic diagram of the structure of the second movable door after removing the obstruction at both ends of the lower crossbeam of the door grille in Embodiment 2 of this utility model;
[0024] Figure 9 This is a schematic diagram of the last movable door structure in this utility model;
[0025] Figure 10 yes Figure 9 A magnified view of a portion of region C in the middle;
[0026] Figure 11 This is a schematic diagram of the gate grille structure of the initial fixed gate in this utility model;
[0027] Figure 12 This is a schematic diagram of the structure of the grille support frame in this utility model;
[0028] Figure 13 This is a schematic diagram of the structure of the pulley block supporting this utility model;
[0029] Figure 14 This is a structural schematic diagram of the lower guide pulley assembly of this utility model;
[0030] Figure 15 This is a schematic diagram of the limiting pulley block in this utility model. Detailed Implementation
[0031] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model.
[0032] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" 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 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 utility model based on the specific circumstances. Example 1
[0035] An electric sliding telescopic linear gate with a composite transmission structure includes a fixed column frame 1, a starting fixed gate 2, a first movable gate 3, and a last movable gate 5 arranged in sequence. Each gate includes a rectangular gate grille 6 that is off the ground and a grille support frame 7 with a grounded movable wheel assembly 77, which has rectangular frames on all four sides and a hollow center. One side of the gate grille 6 of each gate is vertically fixedly connected to one of the vertical frames 71 of its respective grille support frame 7. Each gate grille 6 has an upper crossbeam 61 and a lower crossbeam 62 at its top and bottom, respectively. The upper crossbeam 61 has a side-opening hollow upper track cavity 63, and the lower crossbeam 62 has a side-opening hollow lower track cavity 64. The other side of the gate grille 6 of each movable gate has a vertical beam 8. The upper part of the vertical beam 8 has a side-extending upper guide pulley assembly 81 that matches the side-opening hollow upper track cavity of the upper crossbeam 61 of the previous gate. The sliding and limiting anti-detachment mechanism is installed within the cavity 63. The lower part of each vertical beam 8 is equipped with a laterally extending lower guide pulley assembly 82 that matches the side-opening hollow lower track cavity 64 of the lower crossbeam 62 of the preceding gate row for sliding and limiting anti-detachment. The other end of the gate grid 6 of the initial fixed gate row 2 is fixedly connected to the fixed column frame 1. Each movable gate row's gate grid 6 can be matched with the central hollow portion 74 of the grid support frame 7 passing through each preceding gate row. The lower frame of each grid support frame 7... A support pulley assembly 73 is provided facing upwards. The support pulley assembly 73 is matched and slidably connected with the bottom guide rail 65 provided at the bottom of the lower crossbeam 62 of the gate grille 6 of the next gate that passes through the central hollow part 74 of the grille support frame 7. A limit pulley assembly 76 is provided at the bottom of the upper frame 75 of each grille support frame 7. The limit pulley assembly 76 is matched and limited and slidably connected with the upper crossbeam 61 of the gate grille 6 of the next gate that passes through the central hollow part 74 of the grille support frame 7.
[0036] The first movable gate 3 moves between the initial fixed gate 2 and the adjacent first movable gate 3 via an active device. The active device includes a lateral rack 66 disposed below the lower crossbeam 62 of the initial fixed gate 2, and a motor 83 and an active gear 84 driven by the motor 83 disposed below the vertical beam 8 of the gate grille 6 of the adjacent first movable gate 3. The active gear 84 meshes with the lateral rack 66 of the initial fixed gate 2.
[0037] A driven device is provided between the first movable gate 3 and the second movable gate 4 to enable the second movable gate 4 to move synchronously, in the same direction, and at the same distance when the first movable gate 3 moves. The driven device includes a left traction wheel 91 and a right traction wheel 92 respectively provided at two ends in the side-opening hollow lower track cavity 64 inside the lower crossbeam 62 of the first movable gate 3. A closed and tensioned traction rope loop 93 is wrapped around the left traction wheel 91 and the right traction wheel 92, and the grid of the initially fixed gate 2 is also included. The support pulley block 73 of the gate support frame 7 is also equipped with a lower half-ring clamp 94 for clamping the lower half-ring of the traction rope ring 93 of the first moving gate 3, which matches the clamping point 95 corresponding to the position of the support pulley block 73. In addition, the lateral outward-extending lower guide pulley block 82 at the lower part of the vertical beam 8 of the gate grid 6 of the second moving gate 4 is also equipped with an upper half-ring clamp 96 for clamping the upper half-ring of the traction rope ring 93 of the first moving gate 3, which matches the clamping point 97 corresponding to the position of the lower guide pulley block 82.
[0038] The working process is as follows: When the entire door needs to be opened from its fully extended closed state, the motor 83 located at the lower part of the vertical beam 8 of the door grille 6 of the first moving door 3 starts its forward output and drives the drive gear 84 to mesh with the lateral rack 66 located below the lower crossbeam 62 of the initial fixed door 2. This causes the drive gear 84 to move on the lateral rack 66 from the end near the grille support frame 7 of the initial fixed door 2 to the end near the fixed column frame 1, thereby driving the first moving door 3 to gradually move closer to and overlap with the initial fixed door 2. During this process, the clamping point 95 of the lower half-loop clamp 94 of the traction rope on the support pulley group 73 of the grille support frame 7 of the initial fixed door 2 will move along the traction rope loop 93 of the first moving door 3 as the first moving door 3 moves. Within the lower half of the ring, the points move synchronously in opposite directions at equal distances. Since the traction rope ring 93 is a closed loop in which the points within the upper and lower half of the ring move in opposite directions at equal distances through the action of the left traction wheel 91 and the right traction wheel 92, the clamping point 97 of the upper half of the traction rope ring clamp 96 on the side-extending lower guide pulley group 82 set at the lower part of the vertical beam 8 of the gate grille 6 of the second moving gate 4 will also move synchronously in the same direction at equal distances within the upper half of the traction rope ring 93 of the first moving gate 3 as the first moving gate 3 moves. This causes the second moving gate 4 to gradually move towards and overlap with the first moving gate 3 in the same direction at equal distances. Until the initial fixed gate 2, the first moving gate 3, and the last moving gate 5 basically overlap, the entire gate body completes the fully closed opening state.
[0039] When the entire door needs to be closed from its fully retracted open state, the motor 83 located below the vertical beam 8 of the door grille 6 of the first movable door 3 starts its reverse output and drives the drive gear 84 to mesh with the lateral rack 66 located below the lower crossbeam 62 of the initial fixed door 2. This causes the drive gear 84 to move on the lateral rack 66 from the end near the fixed column frame 1 to the end near the grille support frame 7 of the initial fixed door 2, thereby causing the first movable door 3 to gradually move away from and extend towards the initial fixed door 2. During this process, the clamping point 95 of the lower half-loop clamp 94 of the traction rope on the support pulley block 73 of the grille support frame 7 of the initial fixed door 2 will move within the lower half-loop range of the traction rope loop 93 of the first movable door 3 as the first movable door 3 moves. The inner reverse equidistant synchronous movement occurs because the traction rope ring 93 is a closed loop in which the points within the upper and lower halves of the ring move in opposite directions at equal distances through the action of the left traction wheel 91 and the right traction wheel 92. Therefore, the clamping point 97 of the upper half-ring clamping device 96 of the traction rope on the lower guide pulley group 82 of the side outward extension type set at the bottom of the vertical beam 8 of the gate grid 6 of the second moving gate 4 will also move synchronously in the same direction at equal distances within the upper half-ring of the traction rope ring 93 of the first moving gate 3 as the first moving gate 3 moves. This causes the second moving gate 4 to gradually move away from and extend synchronously in the same direction at equal distances towards the first moving gate 3. This continues until the initial fixed gate 2, the first moving gate 3, and the last moving gate 5 no longer overlap, and the entire gate body completes the fully extended closed state. Example 2
[0040] An electric sliding telescopic linear gate with a composite transmission structure includes a fixed column frame 1, a starting fixed gate 2, and a first movable gate 3, a second movable gate 4, and a last movable gate 5 arranged in sequence. Each gate includes a rectangular gate grille 6 that is off the ground and a grille support frame 7 with a grounded movable wheel assembly 77, having rectangular frames on all four sides and a hollow center. The end of the gate grille 6 of each gate near the next gate is vertically fixed to one of the vertical frames 71 of its respective grille support frame. Each gate grille 6 has an upper crossbeam 61 and a lower crossbeam 62 at its top and bottom, respectively. The upper crossbeam 61 has a side-opening hollow upper track cavity 63, and the lower crossbeam 62 has a side-opening hollow lower track cavity 64. The other end of the gate grille 6 of each movable gate has a vertical beam 8. The upper part of the vertical beam 8 has a side-extending upper guide pulley assembly 81 that matches the side of the upper crossbeam 61 of the previous gate. The open-type hollow upper track cavity 63 slides and is limited to prevent detachment. The lower part of the vertical beam 8 is equipped with a side-extending lower guide pulley group 82 that matches and slides and is limited to prevent detachment within the side-open hollow lower track cavity 64 of the lower crossbeam 62 of the previous gate row. The other end of the gate row grille 6 of the initial fixed gate row 2 is fixedly connected to the fixed column frame 1. The gate row grille 6 of each movable gate row can be matched with the central hollow part 74 of the grille support frame 7 that passes through the previous gate rows. The lower frame 72 is provided with an upward-facing support pulley assembly 73, which is matched and slidably matched with the bottom guide rail 65 provided with the bottom of the lower crossbeam 62 of the gate grille 6 of the next gate that passes through the central hollow part 74 of the grille support frame 7; the upper frame 75 of each grille support frame 7 is provided with a downward-facing limit pulley assembly 76, which is matched and limited and slidably matched with the upper crossbeam 61 of the gate grille 6 of the next gate that passes through the central hollow part 74 of the grille support frame 7.
[0041] The first movable gate 3 moves between the initial fixed gate 2 and the adjacent first movable gate 3 via an active device. The active device includes a lateral rack 66 disposed below the lower crossbeam 62 of the initial fixed gate 2, and a motor 83 and an active gear 84 driven by the motor 83 disposed below the vertical beam 8 of the gate grille 6 of the adjacent first movable gate 3. The active gear 84 meshes with the lateral rack 66 of the initial fixed gate 2.
[0042] A driven device is provided between the first movable gate 3 and the second movable gate 4 to enable the second movable gate 4 to move synchronously, in the same direction, and at the same distance when the first movable gate 3 moves. The driven device includes a left traction wheel 91 and a right traction wheel 92 respectively provided at two ends in the side-opening hollow lower track cavity 64 inside the lower crossbeam 62 of the first movable gate 3. A closed and tensioned traction rope loop 93 is wrapped around the left traction wheel 91 and the right traction wheel 92, and the grid of the initially fixed gate 2 is also included. The support pulley block 73 of the gate support frame 7 is also equipped with a lower half-ring clamp 94 for clamping the lower half-ring of the traction rope ring 93 of the first moving gate 3, which matches the clamping point 95 corresponding to the position of the support pulley block 73. In addition, the lateral outward-extending lower guide pulley block 82 at the lower part of the vertical beam 8 of the gate grid 6 of the second moving gate 4 is also equipped with an upper half-ring clamp 96 for clamping the upper half-ring of the traction rope ring 93 of the first moving gate 3, which matches the clamping point 97 corresponding to the position of the lower guide pulley block 82.
[0043] A driven device is also provided between the second movable gate 4 and the last movable gate 5 to enable the second movable gate 4 to move synchronously, in the same direction, and at the same distance as the last movable gate 5. The driven device includes a left traction wheel 91 and a right traction wheel 92 respectively provided at two ends in the side-open hollow lower track cavity 64 inside the lower crossbeam 62 of the second movable gate 4. A closed and tensioned traction rope loop 93 is wrapped around the left traction wheel 91 and the right traction wheel 92. The grid support bracket 7 is also equipped with a lower half-ring clamp 94 for clamping the lower half-ring of the traction rope ring 93 of the second movable gate 4, which matches the clamping point 95 at the position of the support pulley block 73. In addition, the lower guide pulley block 82 of the vertical beam 8 at the bottom of the gate grid 6 of the last movable gate 5 is also equipped with an upper half-ring clamp 96 for clamping the upper half-ring of the traction rope ring 93 of the second movable gate 4, which matches the clamping point 97 at the position of the lower guide pulley block 82.
[0044] Its working process is as follows: When the entire door needs to be opened from the fully extended closed state, the motor 83 located under the vertical beam 8 of the door grille 6 of the first movable door 3 starts to output forward and drives the drive gear 84 to mesh with the lateral rack 66 located below the lower crossbeam 62 of the initial fixed door 2. This causes the drive gear 84 to move on the lateral rack 66 from the end near the grille support 7 of the initial fixed door 2 to the end near the fixed column frame 1, thereby driving the first movable door 3 to gradually move closer to and overlap with the initial fixed door 2. During this process, the motor 83 located under the vertical beam 8 of the door grille 6 of the first movable door 3 starts to output forward and drives the drive gear 84 to mesh with the lateral rack 66 located below the lower crossbeam 62 of the initial fixed door 2. The clamping point 95 of the lower half-ring clamping device 94 of the traction rope on the support pulley block 73 of the grille support frame 7 of the first moving gate 3 will move synchronously and equidistantly in the lower half-ring of the traction rope ring 93 of the first moving gate 3 as the first moving gate 3 moves. Since the traction rope ring 93 is a closed loop in which the points in the upper and lower half-rings move equidistantly in the opposite direction through the action of the left traction wheel 91 and the right traction wheel 92, the clamping point of the upper half-ring clamping device 96 of the traction rope on the laterally outward-extending lower guide pulley block 82 located at the bottom of the vertical beam 8 of the gate grille 6 of the second moving gate 4 will also move synchronously and equidistantly in the opposite direction as the first moving gate 3 moves. 97 will also move synchronously and equidistantly within the upper half of the traction rope ring 93 of the first moving gate 3 as the first moving gate 3 moves, thereby causing the second moving gate 4 to gradually approach and overlap the first moving gate 3 in a synchronous and equidistant manner. Similarly, during this process, the clamping point 95 of the lower half of the traction rope ring clamp 94 on the supporting pulley block 73 of the grid support frame 7 of the first moving gate 3 will move synchronously and equidistantly in the opposite direction within the lower half of the traction rope ring 93 of the second moving gate 4 as the second moving gate 4 moves. Similarly, the clamping point 95 of the clamping point 95 on the lower half of the traction rope ring 93 of the second moving gate 4 will also move synchronously and equidistantly within the lower half of the traction rope ring 93 of the second moving gate 4. The clamping point 97 of the upper half-ring clamping device 96 of the traction rope on the lower guide pulley group 82 of the vertical beam 8 of the gate grille 6 of a movable gate 5 will also move synchronously and equidistantly in the same direction within the upper half-ring of the traction rope ring 93 of the second movable gate 4 as the second movable gate 4 moves. This will cause the last movable gate 5 to gradually move closer to and overlap with the second movable gate 4 in the same direction and equidistantly; until the initial fixed gate 2, the first movable gate 3, the second movable gate 4, and the last movable gate 5 are basically overlapped, and the entire gate body completes the fully closed open state.
[0045] When the entire door needs to be closed from its fully retracted open state, the motor 83 located below the vertical beam 8 of the door grille 6 of the first movable door 3 starts its reverse output and drives the drive gear 84 to mesh with the lateral rack 66 located below the lower crossbeam 62 of the initial fixed door 2. This causes the drive gear 84 to move on the lateral rack 66 from the end near the fixed column frame 1 to the end near the grille support 7 of the initial fixed door 2, thereby causing the first movable door 3 to gradually move away from and extend towards the initial fixed door 2. During this process, the grille support 7 of the initial fixed door 2... The clamping point 95 of the lower half-ring clamp 94 of the traction rope on the support pulley block 73 of the bracket 7 will move synchronously and equidistantly in the opposite direction within the lower half-ring of the traction rope ring 93 of the first moving gate 3 as the first moving gate 3 moves. Since the traction rope ring 93 is a closed loop in which the points within the upper and lower half-rings move equidistantly in the opposite direction through the action of the left traction wheel 91 and the right traction wheel 92, the clamping point 97 of the upper half-ring clamp 96 of the traction rope on the lateral outward-extending lower guide pulley block 82 located at the lower part of the vertical beam 8 of the gate grille 6 of the second moving gate 4 will also move synchronously and equidistantly in the opposite direction as the first moving gate 3 moves. The movement of the first movable gate 3 causes it to move synchronously and equidistantly within the upper half of the traction rope ring 93 of the first movable gate 3, thereby causing the second movable gate 4 to gradually move away from and extend synchronously and equidistantly in the same direction towards the first movable gate 3. Similarly, during this process, the clamping point 95 of the lower half of the traction rope ring clamp 94 on the supporting pulley block 73 of the grille support frame 7 of the first movable gate 3 will move synchronously and equidistantly in the opposite direction within the lower half of the traction rope ring 93 of the second movable gate 4 as the second movable gate 4 moves. Similarly, the clamping point 95 of the clamping point 95 on the last movable gate 3 will also move synchronously and equidistantly within the lower half of the traction rope ring 93 of the second movable gate 4. The clamping point 97 of the upper half-ring clamping device 96 on the traction rope of the lower guide pulley group 82 of the door grille 6 of row 5 will also move synchronously and equidistantly in the same direction within the upper half-ring of the traction rope ring 93 of the second moving door 4 as the second moving door 4 moves. This will drive the last moving door 5 to move synchronously and equidistantly in the same direction away from and extend towards the second moving door 4. Until the initial fixed door 2, the first moving door 3, the second moving door 4, and the last moving door 5 are no longer basically overlapping, the entire door body completes the fully extended closed state.
[0046] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. If, due to the large width of the entrance / exit, more subsequent movable gates are needed to meet the usage requirements, the subsequent movable gates can still be synchronized and move in the same direction at equal distances by setting a driven device between them, so that the movement of the previous movable gate drives the current movable gate to move synchronously. Based on this explanation, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.
Claims
1. An electric sliding telescopic linear gate with a composite transmission structure, comprising a fixed column frame, a starting fixed gate row, and at least two movable gate rows arranged sequentially. Each gate row includes a rectangular gate grid that is off the ground and a grid support frame with a grounded movable wheel assembly, having rectangular borders on all four sides and a hollow center. One end of the gate grid of each gate row is fixedly connected at a right angle to its respective grid support frame. The gate grid of each movable gate row can be matched to the hollow center of the grid support frame of the preceding gate rows. The lower border of each grid support frame is provided with a supporting pulley assembly facing upwards. The supporting pulley assembly and the pulley assembly passing through the grid... The bottom guide rails of the lower crossbeams of the gate grids of the rear gate row in the central hollow section of the grid support frame slide together in match; each gate grid has an upper crossbeam and a lower crossbeam at its top and bottom, respectively, and both the upper and lower crossbeams have side-opening hollow track cavities. Each movable gate grid has a vertical beam at its other end, and the upper and lower parts of the vertical beams are respectively provided with laterally extending upper and lower guide pulley sets that slide and limit and prevent detachment within the side-opening hollow track cavities of the upper and lower crossbeams of the preceding gate row. The other end of the gate grid of the initial fixed gate row is fixedly connected to the fixed column frame. Its characteristic is that: The first moving gate is moved by an active device that matches and meshes a rack and a drive gear with the first adjacent moving gate. The moving gates are moved synchronously in the same direction and at equal distances by a driven device that follows the upper and lower half-ring clamps of the traction rope.
2. The electric sliding telescopic linear gate with a composite transmission structure according to claim 1, characterized in that: The active device includes a lateral rack disposed below the lower crossbeam of the initial fixed gate, and a motor and a drive gear driven by the motor disposed below the vertical beam of the gate grid of the adjacent first movable gate, the drive gear engaging with the lateral rack of the initial fixed gate.
3. The electric sliding telescopic linear gate with a composite transmission structure according to claim 1, characterized in that: The driven device includes a left traction wheel and a right traction wheel respectively installed at two ends in the side-opening hollow track cavity inside the lower crossbeam of the current moving gate. A closed and tensioned traction rope loop is wrapped around the left and right traction wheels. A lower half-loop clamping device for the traction rope is also installed on the supporting pulley block of the previous gate to clamp the lower half-loop clamping point on the traction rope loop of the current moving gate that matches the position of the supporting pulley block. Furthermore, an upper half-loop clamping device for the traction rope is also installed on the side-extending guide pulley block at the lower part of the vertical beam of the gate grid of the next gate to clamp the upper half-loop clamping point on the traction rope loop of the current moving gate that matches the position of the guide pulley block.
4. The electric sliding telescopic linear gate with a composite transmission structure according to claim 1, characterized in that: Each grille support frame is provided with a limiting pulley assembly facing downwards on its upper frame. The limiting pulley assembly matches and limits the movement of the upper crossbeam of the grille of the next gate row that passes through the central hollow part of the grille support frame.