Invisible super-long transmission structure of linear door

Abstract

The invention discloses an invisible super-long transmission structure of a straight line door, and belongs to the technical field of straight line doors. The front case and the rear case are arranged front and back, and the rear case is a standby driving mechanism of the front case. The front case and the rear case respectively comprise a case frame, a motor case and a buried transmission case, a transmission mechanism in the transmission case is meshed with a door row rack through a third gear, and transmission force is concentrated in the middle of a door row. The door row is provided with an X-shaped pull rod and a supporting frame to enhance rigidity, a ground wheel box is provided with a ground rail wheel and a height-adjustable windproof hook, and channel steel in a ground channel and a rail are matched with the windproof hook and the ground rail wheel respectively to achieve guiding and limiting. The problems that traditional single-side driving is uneven in stress, prone to derailing and poor in wind resistance are solved, and the single-side driving device has the advantages of being stable in transmission, invisible, attractive, high in reliability, high in wind resistance and convenient and fast to maintain and is suitable for application scenes of ultra-long straight line doors.

Description

Technical Field

[0001] This invention belongs to the field of linear door technology, specifically relating to a concealed ultra-long transmission structure for linear doors. Background Technology

[0002] As a highly efficient and convenient access control device, linear gates are widely used in industrial parks, logistics parks, large venues, and other scenarios requiring large-span passageways. With the continuous upgrading of application demands, the application of extra-long linear gates in various large venues is becoming increasingly common, and their transmission stability and structural safety have become core factors affecting the user experience. Traditional linear gate transmission designs are mostly developed around standard-sized scenarios, gradually revealing insufficient adaptability in extra-long applications.

[0003] In existing technologies, ultra-long straight gates generally employ a single-sided drive or single-sided traction transmission method, which inherently suffers from uneven force distribution. Due to the length advantage of the ultra-long gate, the driving force applied from one side is difficult to evenly transmit to the entire gate, resulting in inconsistent running speeds at both ends. Long-term use can easily lead to gate deformation, accelerated wear of transmission components, and ultimately derailment. Furthermore, the single-sided drive structure provides limited support and guidance for the gate. Under severe weather conditions such as strong winds, the gate is susceptible to lateral forces, causing it to shift or even tip over, significantly impacting the safety and reliability of the straight gate.

[0004] Furthermore, traditional linear gates often employ exposed transmission mechanisms, which not only occupy extra space and affect the overall aesthetics but are also susceptible to corrosion from external dust, rain, and foreign objects, leading to decreased transmission accuracy, frequent malfunctions, and increased maintenance costs. Simultaneously, existing transmission structures lack backup drive mechanisms; if the main drive system fails, the linear gate will be unable to open or close properly, directly impacting site traffic efficiency and management order, and failing to meet the high requirements of continuous equipment operation in large venues. Summary of the Invention

[0005] The present invention aims to solve the technical problems of the above-mentioned prior art, which are that the use of single-sided drive or traction method for ultra-long straight gates leads to uneven force distribution, easy derailment, easy deviation and overturning in strong winds, and the transmission mechanism is exposed and easily damaged, and there is no backup drive mechanism.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A linear door concealed ultra-long transmission structure includes a ground, a front housing and a rear housing arranged front to back and fixedly installed on the top of the ground. The rear housing is configured as a backup drive mechanism in case of failure of the front housing. The front housing and the rear housing have the same structure and are synchronously adapted to the door drive.

[0008] Both the front and rear chassis include a chassis frame fixed to the top of the ground, a motor box located on one side of the chassis frame and above the ground, and a transmission box fixedly connected to the chassis frame and buried underground. The motor box and the transmission box are internally connected to form a transmission receiving cavity, and a transmission mechanism is provided in the transmission receiving cavity.

[0009] The transmission force is concentrated in the middle of the gate by the engagement of the third gear on the transmission mechanism with the rack on the gate.

[0010] The dual-drive design of the front chassis and the backup rear chassis, combined with the transmission method that concentrates the power transmission in the middle of the gate, greatly improves the stability and reliability of the operation of the ultra-long straight gate and avoids equipment downtime due to a single drive failure.

[0011] Preferably, the transmission mechanism includes a drive motor fixed inside a motor housing, a reduction gearbox connected to the output end of the drive motor, a first sprocket fixedly connected to the output end of the reduction gearbox, a shaft bracket fixed inside a transmission housing and partially extending out of the transmission housing, a first transmission shaft rotatably mounted on the shaft bracket via bearings, a second and third transmission shafts rotatably mounted on the shaft bracket via bearings and arranged vertically in parallel, a second sprocket and a first gear respectively fixed at both ends of the first transmission shaft, a chain sleeved on the outside of the first and second sprockets and meshing with them, a second gear fixed on the second transmission shaft, and a third gear fixed on the third transmission shaft; the first gear meshes with the second gear, the second gear meshes with the third gear, and the third gear meshes with the rack on the gate to transmit driving force. The multi-shaft, multi-gear, and sprocket cooperative transmission structure realizes smooth power transmission and precise speed adjustment, ensuring smooth and uninterrupted gate operation and effectively reducing wear on transmission components.

[0012] Preferably, the transmission box includes a box body and a box cover plate that can be detachably installed on the top of the box body. The upper surface of the box cover plate is flush with the ground. When the box body is installed, the meshing gap between the third gear and the rack can be adjusted. The transmission box is buried underground and the box cover plate is flush with the ground, which not only makes the transmission structure invisible and beautiful, but also facilitates the adjustment of the meshing gap between the gear and the rack, ensuring transmission accuracy.

[0013] Preferably, the inner side of the chassis frame is provided with two sets of symmetrically distributed guide wheels. The two sets of guide wheels are respectively set to fit against the two side walls of the door, and are configured to limit and guide the sliding of the door. The two sets of symmetrical guide wheels fit against the two sides of the door to limit the sliding, effectively preventing the door from deviating when sliding and improving the accuracy of the running trajectory.

[0014] Preferably, the door panel includes a lower sliding door and an upper sliding door fixed above the lower sliding door. The lower sliding door includes a bottom beam and a vertical beam fixed on the bottom beam. Two sets of racks are arranged and located at the bottom center of the bottom beam. The racks are symmetrically arranged with respect to the center line of the ground. The two sets of racks symmetrically arranged at the center of the bottom beam are precisely matched with the transmission gears, so that the door panel is subjected to more balanced force and avoids deformation or derailment caused by unilateral force.

[0015] Preferably, the lower sliding door is provided with several X-shaped tie rods, the two ends of which are fixedly connected to adjacent upright beams, and the tie rods are evenly distributed along the length of the lower sliding door; several support frames are evenly arranged on both sides of the lower sliding door, and the support frames are fixedly connected to the upright beams and the bottom beams respectively. The reinforcement design of the X-shaped tie rods and the support frames on both sides significantly enhances the overall rigidity and structural strength of the extra-long door, preventing the door from deforming due to excessive length.

[0016] Preferably, beam covers are fixedly provided on both ends of the bottom beam, the bottom of the support frame is welded and fixed to the ground wheel box, the connecting piece at the top of the support frame is fixedly connected to the gate with screws, and the ground wheel box is fixed to the bottom of the bottom beam with screws; a ground rail wheel is rotatably connected to the outer end of the ground wheel box, and the wheel axle of the ground rail wheel is rotatably engaged with the ground wheel box through a bearing. The design of beam cover protection, screw fixing connection and ground rail wheel and bearing not only protects the internal components from the corrosion of impurities, but also reduces the sliding resistance of the gate and extends the service life of the equipment.

[0017] Preferably, a windproof hook is provided on the outer end of the wheel box and on the inner side of the ground rail wheel, and a wheel cover is provided on the outer side of the wheel box covering the upper outer side of the ground rail wheel; the windproof hook has a waist hole, and the windproof hook is installed on the wheel box by an adjusting screw passing through the waist hole. The installation height of the windproof hook can be adjusted along the length of the waist hole. The height-adjustable windproof hook, combined with the wheel cover protection, can flexibly adapt to different working conditions to achieve stable lateral positioning, and can also prevent debris from entering the ground rail wheel, thereby improving the wind resistance and durability of the equipment.

[0018] Preferably, two sets of channels are symmetrically arranged on the left and right sides of the ground. Each set of channels is fixedly installed with channel steel and rails. The channel steel works with the windproof hook to achieve lateral limiting and guidance, and the rails work with the ground wheel to achieve sliding guidance. The dual guiding and limiting design of the channel steel and rails in the channel, together with the windproof hook and ground wheel, achieves bidirectional stable guidance for the sliding of the door, further avoiding the problems of deviation and derailment.

[0019] Compared with the prior art, the technical effects and advantages of the present invention are:

[0020] (1) This invention adopts a dual-drive structure with a front and rear chassis and a transmission method concentrated in the middle of the gate, which completely solves the problem of uneven force caused by traditional single-sided drive, making the ultra-long gate run more smoothly and effectively avoiding the risk of derailment. At the same time, the rear chassis serves as a backup mechanism, which greatly improves the reliability of equipment operation and prevents shutdown caused by single drive failure.

[0021] (2) The transmission mechanism adopts a buried concealed design, which, together with the box cover plate flush with the ground, not only avoids the corrosion of transmission components by external dust and rainwater, extending the service life, but also keeps the ground clean and beautiful, without affecting the passage of people and vehicles; the coordinated transmission structure of multi-axis, multi-gear and sprocket, as well as the double-sided limit design of the guide wheel, further ensures the accuracy of the gate's running trajectory and reduces component wear.

[0022] (3) The X-shaped tie rods of the gate and the support frames on both sides enhance the overall rigidity and effectively prevent the deformation of the extra-long gate; the height-adjustable windproof hooks and the double cooperation of the channel steel, ground rail wheels and road rails significantly improve the wind resistance of the equipment and prevent the gate from shifting or overturning in strong winds; each component adopts a modular assembly design, and the fitting gap can be flexibly adjusted during installation, making maintenance convenient and more adaptable. Attached Figure Description

[0023] Figure 1 This is the front view of the present invention;

[0024] Figure 2 This is a right view of the present invention;

[0025] Figure 3 This is a schematic diagram of the front chassis of the present invention;

[0026] Figure 4 This is a front view of the front chassis of the present invention;

[0027] Figure 5 This is a main sectional view of the front chassis of the present invention;

[0028] Figure 6 This is an exploded view of the transmission mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the transmission mechanism of the present invention;

[0030] Figure 8 This is a partial schematic diagram of the lower sliding door of the present invention;

[0031] Figure 9 This is a schematic diagram of the support frame of the present invention;

[0032] Figure 10 This is an exploded view of the support frame of the present invention.

[0033] In the diagram: 1. Ground; 101. Channel; 102. Channel steel; 103. Rail; 2. Front chassis; 3. Rear chassis; 201. Chassis frame; 202. Motor box; 203. Transmission box; 2031. Box body; 2032. Box cover; 204. Transmission mechanism; 2041. Drive motor; 2042. Gearbox; 2043. First sprocket; 2044. Shaft support; 2045. Third gear; 2046. First transmission shaft; 2047. Second transmission shaft. 1. Drive shaft; 2048. Third drive shaft; 2049. Second sprocket; 2050. First gear; 2051. Chain; 2052. Second gear; 205. Guide wheel; 4. Lower sliding door; 401. Bottom beam; 402. Vertical beam; 403. Rack; 404. Tie rod; 405. Support frame; 406. Wheel cover; 407. Connecting piece; 408. Ground wheel box; 409. Ground track wheel; 410. Wheel axle; 411. Windproof hook; 5. Upper sliding door. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] This application discloses a concealed ultra-long transmission structure for linear gates, specifically designed for ultra-long linear gate applications. It effectively solves problems such as uneven force distribution, easy derailment, and poor wind resistance found in traditional equipment. The following description, in conjunction with the attached... Figure 1-10 The specific composition and installation and usage details of this structure are described in detail:

[0036] At the top of ground 1, front housing 2 and rear housing 3 are neatly installed, forming a backup system. During normal use, front housing 2 is the main drive unit. If front housing 2 fails, rear housing 3 can be activated immediately to prevent the straight gate from stopping and affecting passage, thus greatly improving the reliability of the equipment.

[0037] The front chassis 2 and the rear chassis 3 have completely identical structures, each containing three main components: first, a chassis frame 201 fixed to the top of the ground 1, which provides stable support; second, a motor housing 202 mounted on one side of the chassis frame 201 and located above the ground 1, which houses the drive power components; and third, a transmission housing 203 fixedly connected to the chassis frame 201 and buried underground, which makes the transmission structure invisible, does not occupy ground space, and does not affect aesthetics.

[0038] The transmission mechanism 204 is installed inside both the motor housing 202 and the transmission housing 203. This mechanism is concealed underground, which not only prevents dust and rainwater erosion, extending its service life, but also keeps the ground clean. The transmission housing 203 consists of a housing body 2031 and a cover plate 2032. After installation, the cover plate 2032 is flush with the ground 1, completely not affecting the passage of people and vehicles. During installation, the position of the housing body 2031 can be adjusted to precisely regulate the fit between the transmission mechanism 204 and the gate, ensuring smooth transmission.

[0039] Door panel structure: The door panel consists of two layers, with the lower layer being the lower sliding door 4 and the upper layer being the upper sliding door 5. The overall structure is stable and aesthetically pleasing. The core of the lower sliding door 4 is the bottom beam 401 and the vertical beams 402 fixed to the bottom beam 401. A mesh partition is installed between adjacent vertical beams 402, and beam caps are installed at both ends of the bottom beam 401 to prevent dust and debris from entering the interior and protect the components.

[0040] The transmission mechanism 204 is the core of the drive gate movement, comprising a drive motor 2041, a reduction gearbox 2042, a first sprocket 2043, a shaft support 2044, a third gear 2045, a first drive shaft 2046, a second drive shaft 2047, a third drive shaft 2048, a second sprocket 2049, a first gear 2050, a chain 2051, and a second gear 2052. During operation, the drive motor 2041 provides power, which, after speed regulation by the reduction gearbox 2042, drives the first sprocket 2043 to rotate. This, in turn, drives the second sprocket 2049 and the first drive shaft 2046 via the chain 2051. Finally, through the meshing of the first gear 2050 and the second gear 2052, the third gear 2045 is driven to rotate. The third gear 2045 precisely meshes with the rack 403 on the gate, concentrating the power transmission in the middle of the gate. Compared to traditional single-sided drive, this results in more even force distribution, smoother gate operation, and eliminates the problem of inconsistent speeds at both ends.

[0041] The inner side of the chassis frame 201 is equipped with rotating guide wheels 205, which limit and guide the door panel from both sides, ensuring that the door panel can only slide in a fixed direction and avoid deviation. At the same time, two sets of channels 101 are symmetrically dug on the left and right sides of the ground 1. Channel steel 102 and rails 103 are installed in the channels 101 respectively, which, together with the relevant components of the lower sliding door 4, achieve double guidance and limitation, further improving the operational stability.

[0042] The lower sliding door 4 is equipped with several X-shaped pull rods 404. These pull rods 404 are connected at both ends to adjacent upright beams 402 and are evenly distributed along the length of the door, effectively enhancing the overall rigidity of the door and preventing deformation of excessively long doorways. Multiple support frames 405 are also evenly spaced on both sides of the doorway, fixed to the upright beams 402 and the bottom beam 401 respectively, further improving structural strength. The bottom of the support frame 405 is welded to a ground wheel box 408, which is fixed to the side of the bottom beam 401 with screws. Ground tracks 409 are mounted on the outside of the ground track box 408, with their axles 410 connected to the ground track box 408 via bearings, allowing for flexible rolling. Combined with the ground track 103, this makes the doorway slide more smoothly and reduces friction loss. In addition, a windproof hook 411 is installed inside the wheel box 408. The windproof hook 411 has a slotted hole, through which screws are passed to fix it to the wheel box 408. The height can be adjusted according to the actual situation. Together with the channel steel 102 in the channel 101, it forms a solid lateral limit. Even in strong winds, it can prevent the door panel from shifting or tipping over, greatly improving wind resistance. A wheel cover 406 is also installed on the outside of the wheel box 408, which can cover the upper part of the ground track wheel 409 to prevent dust, stones and other debris from entering and protect the ground track wheel 409 for normal operation.

[0043] A rack 403 is installed at the center of the bottom beam 401 of the lower sliding door 4. The rack 403 is symmetrically arranged with respect to the center of the ground 1. Two sets of racks 403 are specially installed so that they can work precisely with the third gear 2045 of the transmission mechanism 204 to ensure more balanced power transmission and smoother start and stop of the door without any jamming.

[0044] After the equipment is started, the drive motor 2041 in the front housing 2 outputs power, which is reduced by the gearbox 2042 and drives the first sprocket 2043 to rotate. The first sprocket 2043 drives the second sprocket 2049 to rotate through the chain 2051, which in turn drives the first drive shaft 2046 and the first gear 2050 to rotate synchronously. The first gear 2050 meshes with the second gear 2052 on the second drive shaft 2047, driving the second drive shaft 2047 to rotate. The second gear 2052 then meshes with the third gear 2045 on the third drive shaft 2048, finally transmitting power to the third gear 2045.

[0045] The third gear 2045 meshes with the rack 403 on the bottom beam 401 of the gate, converting rotational power into linear power and pushing the gate to slide along a fixed direction. At this time, the ground rail wheels 409 on both sides of the gate roll on the ground rails 103 to reduce sliding resistance. The guide wheels 205 on the chassis frame 201 limit the gate from both sides to ensure that the running direction does not deviate.

[0046] During the sliding process, the windproof hook 411 on the ground wheel box 408 and the channel steel 102 in the channel 101 closely cooperate to resist the lateral wind force and prevent the gate from shifting or tipping over; the X-shaped tie rod 404 and the support frame 405 enhance the rigidity of the gate itself and prevent the gate from deforming due to its excessive length.

[0047] If the drive motor 2041 or transmission components of the front chassis 2 malfunction, the rear chassis 3 will start immediately. Its internal transmission mechanism will drive the gate according to the same power transmission logic to ensure that the equipment does not stop and ensures the continuity of passage.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A linear door invisible super long transmission structure, characterized in that, It includes ground (1), front and rear arranged and fixedly installed on the top of ground (1) front machine box (2) and rear machine box (3), the rear machine box (3) is configured as the standby drive mechanism when the front machine box (2) fails, the front machine box (2) and the rear machine box (3) are consistent in structure and are synchronously adapted to door row transmission; The front machine box (2) and the rear machine box (3) both include a machine box frame (201) fixedly installed on the top of the ground (1), a motor box (202) arranged on one side of the machine box frame (201) and located above the ground (1), and a transmission box (203) fixedly connected with the machine box frame (201) and buried underground, the motor box (202) and the transmission box (203) are in internal communication to form a transmission containing cavity, and a transmission mechanism (204) is arranged in the transmission containing cavity; The third gear (2045) on the transmission mechanism (204) is combined with the rack (403) on the door row, and the transmission force is concentrated in the middle of the door row.

2. The linear door invisible super-long transmission structure according to claim 1, characterized in that: The transmission mechanism (204) includes a drive motor (2041) fixedly installed in the motor box (202), a speed reducer (2042) in transmission connection with the output end of the drive motor (2041), a first sprocket (2043) fixedly connected with the output end of the speed reducer (2042), a shaft support (2044) fixedly installed in the transmission box (203) and partially protruding from the transmission box (203), a first transmission shaft (2046) rotatably assembled on the shaft support (2044) through a bearing, a second transmission shaft (2047) and a third transmission shaft (2048) rotatably assembled on the shaft support (2044) and arranged in parallel in an up-down direction through bearings, a second sprocket (2049) and a first gear (2050) fixedly installed at both ends of the first transmission shaft (2046), a chain (2051) sleeved outside the first sprocket (2043) and the second sprocket (2049) and in meshing connection with both, a second gear (2052) fixedly installed on the second transmission shaft (2047), and a third gear (2045) fixedly installed on the third transmission shaft (2048); the first gear (2050) is in meshing connection with the second gear (2052), the second gear (2052) is in meshing connection with the third gear (2045), and the third gear (2045) is in meshing connection with the rack (403) on the door row to transmit driving force.

3. The linear door invisible super-long transmission structure according to claim 2, characterized in that: The transmission box (203) includes a box body (2031) and a box cover plate (2032) detachably installed on the top of the box body (2031), and the upper surface of the box cover plate (2032) is flush with the ground (1).

4. The linear door invisible super-long transmission structure according to claim 2, characterized in that: The inner side of the machine box frame (201) is rotatably provided with two groups of symmetrically distributed guide wheels (205), and the two groups of guide wheels (205) are respectively arranged in close contact with the two side walls of the door row, and are configured to limit and guide the sliding of the door row.

5. The linear door invisible super-long transmission structure according to claim 1, characterized in that: The door row includes a lower door row sliding door (4) and an upper door row sliding door (5) fixed above the lower door row sliding door (4), the lower door row sliding door (4) includes a bottom beam (401) and a vertical beam (402) fixed vertically on the bottom beam (401), and the rack (403) is arranged in two groups and located at the bottom center of the bottom beam (401), and the rack (403) is symmetrically arranged relative to the center line of the ground (1).

6. A linear door stealth overdrive structure according to claim 5, characterized in that: A plurality of X-shaped pull rods (404) are arranged on the lower door row sliding door (4), the two ends of the pull rod (404) are fixedly connected with the adjacent vertical beams (402), and a plurality of the pull rods (404) are distributed equidistantly along the length direction of the lower door row sliding door (4); a plurality of support frames (405) are arranged equidistantly on the two sides of the lower door row sliding door (4), and the support frames (405) are fixedly connected with the vertical beams (402) and the bottom beam (401) respectively.

7. A linear door invisible super long transmission structure according to claim 6, characterized in that: Beam covers are fixedly arranged on the two end faces of the bottom beam (401), the bottom of the support frame (405) is welded and fixed on the ground wheel box (408), the connecting plate (407) at the top of the support frame (405) is fixedly connected with the door row through screws, and the ground wheel box (408) is fixedly connected with the bottom beam (401) through screws; the ground rail wheel (409) is rotatably connected to the outer end side of the ground wheel box (408), and the wheel shaft (410) of the ground rail wheel (409) is rotatably connected with the ground wheel box (408) through a bearing.

8. A linear door stealth overdrive structure according to claim 7, characterized in that: The outer end side of the ground wheel box (408) and the inner side of the ground rail wheel (409) are provided with a wind hook (411), and the outer side of the ground wheel box (408) is provided with a wheel cover (406) covering the outer side of the upper end of the ground rail wheel (409); a waist hole is formed in the wind hook (411), and the wind hook (411) is installed on the ground wheel box (408) through an adjusting screw penetrating the waist hole, and the wind hook (411) can adjust the installation height along the length direction of the waist hole.

9. A linear door stealth overdrive structure according to claim 8, characterized in that: Two groups of channels (101) are symmetrically arranged on the left and right sides of the ground (1), a channel steel (102) and a rail (103) are fixedly installed in each group of channels (101), the channel steel (102) is matched with the wind hook (411) to realize horizontal limiting and guiding, and the rail (103) is matched with the ground rail wheel (409) to realize sliding guiding.

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