A door opener for heavy doors with convenient locking and a method of using the same

Abstract

The application discloses a heavy door opener with convenient locking and a use method thereof, comprising a heavy door body, a hanging frame system, a hanging rail system and a hanging seat. The heavy door body is provided with a hanging rod on both sides, the door plate hanging frame body of the hanging frame system is provided with a hook device on both sides, and the hanging rod is hung on the lever hook of the hook device. The lever hook is rotated around the shaft rod by driving the opening and closing rotating shaft frame and the pull rod body through pressing the pressing rod, the hanging rod is lifted and pushed into the limiting space of the hanging seat, and the door body is lifted and reliably locked. The end of the pressing rod can be locked by the limiting hole and the pin shaft, and the anti-loosening effect is good. The application adopts a separable hanging structure of the door body and the hanging frame, is convenient to overhaul, is stable in locking, is labor-saving in operation, and supports manual and electric driving.

Description

Technical Field

[0001] This invention relates to the field of building engineering or special door installation technology, and in particular to a heavy-duty door lifter for easy locking and its method of use. Background Technology

[0002] In locations with high requirements for insulation and sealing, such as industrialized cultivation of edible fungi, cold storage facilities for cold chain logistics, and large industrial plants, heavy-duty doors are typically installed at the entrance. These doors are highly rigid and heavy. To facilitate opening and closing, current technology often employs a "suspension rail + pulley" structure, suspending the door on a top rail and moving it horizontally via manual or motor-driven operation. However, existing heavy-duty door lifters still have the following technical problems: 1. The door and hanger are mostly fixedly connected, making inspection and maintenance difficult. Existing heavy-duty sliding doors typically use bolts to rigidly fix the door body and the hanger system, or use non-separable hinges. When the door body needs to be disassembled for maintenance, seal replacement, or equipment behind the door opening needs to be inspected due to long-term use, the entire hanger system must be disassembled or even the slide rails removed. This operation is cumbersome, time-consuming, and labor-intensive, and can easily damage the door body and its accessories.

[0003] Second, the locking structure has poor anti-loosening effect, posing a safety hazard. Most existing door openers use a simple bolt that is directly inserted into a pin seat hole. When the door is moved to the doorway and needs to be locked, the operator inserts the bolt into the limiting hole to secure the opening / closing shaft or hook device. However, in mushroom houses, workshops, and other similar locations, accidental collisions during personnel movement and material handling, as well as vibrations generated when the door closes, can easily cause the ordinary bolt, which lacks a self-locking function, to come loose from its pin seat. This can lead to the hook coming off, the door sliding down unexpectedly, or opening abnormally, posing a significant safety hazard.

[0004] Third, the door lifting mechanism is complex and labor-intensive to operate. Some door lifters require complex lifting mechanisms to achieve a tight fit between the door and the threshold or hanger, resulting in numerous operating steps and failing to fully utilize the lever principle, making manual operation still quite laborious. Furthermore, after lifting, the weight of the door is typically borne by the hanger system for an extended period, increasing the fatigue burden on the slide rails and pulley systems and affecting their service life.

[0005] To address the aforementioned problems, this invention provides a conveniently locking heavy-duty door lifter and its usage method. The door lifter employs a detachable hook-and-loop structure for the heavy-duty door body and the hanger system (hanging rods are provided on both sides of the door body, and hook devices are provided on both sides of the door panel hanger body of the hanger system). By pressing down the pressure rod, the opening and closing pivot frame and the pull rod body are driven, causing the lever hooks to rotate around the pivot, raising the hanging rods and pushing them into the limiting space of the hanger, thus achieving door lifting and reliable locking. Simultaneously, the end of the pressure rod can be locked through a limiting hole and a pin, providing good anti-loosening effect. Furthermore, the overall structure supports both manual and electric drive, making operation labor-saving and maintenance convenient. Summary of the Invention

[0006] The purpose of this invention is to provide a heavy-duty door lifter that is easy to lock and its usage method, so as to solve the technical problems in the prior art of difficult disassembly of heavy-duty doors and hangers, easy loosening of locking structure, and laborious operation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A door opener for heavy-duty doors that is easy to lock, characterized in that: it includes a heavy-duty door body, a hanger system for supporting the heavy-duty door body, a rail system for supporting the hanger system, and a bracket for supporting the heavy-duty door body; The hanging system includes a door panel hanger body, a hanging rope fixed to the door panel hanger body, and hook devices on both sides of the door panel hanger body. The heavy-duty door body has hanging rods on both sides, and the hanging rods are hooked onto the hook devices. The hanging rail system includes a slide rail and a top moving pulley. The hanging rope is fixedly connected to the top moving pulley. The top moving pulley moves left and right along the slide rail, so as to realize the left and right movement of the heavy-duty door body along the slide rail, thereby closing and opening the doorway. The hook device includes a lever hook, a shaft for supporting the lever hook, and a pull rod device. The hook rod is hung on the hook end of the lever hook. The pull rod device includes a pull rod body connected to the rod end of the lever hook away from the hook end and an opening and closing pivot frame for pulling the pull rod body. The middle parts of the two lever hooks are respectively supported on the shafts on both sides of the door panel bracket body and rotate around the shafts. The opening and closing pivot frame includes a pivot rod, a pressure rod, and a short rotating rod provided on the pivot rod and directly bolted to the pull rod body. The pivot rod passes through the ear holes spaced apart in the door panel bracket body and is limited within the ear holes. The short rotating rod is provided at both ends of the pivot rod passing through the ear holes. The door panel bracket body is also provided with limiting holes for limiting the pressure rod.

[0008] More preferably, the ends of the pull rod body that connect to the lever hook and the short rotating rod are provided with several through holes at intervals. The two through holes are connected by bolts, thereby making the pull rod body, lever hook and short rotating rod hinged.

[0009] Furthermore, the mounting bracket includes a wall-mounted plate, a vertical plate fixed to the wall-mounted plate, and a stop bar fixed obliquely to the vertical plate. The hanging bar is hung in the limiting space formed by the stop bar, the upper edge of the vertical plate, and the wall-mounted plate. The vertical plate is provided with two rows of elongated holes, and the stop bar is bolted to the two rows of elongated holes.

[0010] Furthermore, the slide rail is an I-beam; the top moving pulley includes at least two sets, each set of top moving pulleys includes two pulley groups, the two pulley groups are respectively supported on the top surface of the lower flange plates on both sides of the web of the I-beam, and are connected into one piece by a wheel frame; the wheel frame is provided with a lifting hole, and the upper end of the lifting rope is fixed to the lifting hole.

[0011] Furthermore, guide pulleys are provided at both ends of the slide rail; a closed-loop traction steel wire rope passes around the two guide pulleys, and the wheel frame is fixedly connected to one side of the closed-loop traction steel wire rope; an electrical control device is provided on or beside the slide rail, the electrical control device including a drive motor, a reducer, a drive wheel, and a steel wire rope tensioning device; the drive motor drives the drive wheel to rotate via the reducer, and the drive wheel presses against and drives the closed-loop traction steel wire rope to circulate; the steel wire rope tensioning device is used to adjust the tension of the closed-loop traction steel wire rope; the drive motor drives the wheel frame and the top moving pulley to reciprocate along the I-beam by controlling the circulation direction of the closed-loop traction steel wire rope, thereby realizing the left and right displacement of the heavy-duty door body and the door panel bracket body.

[0012] Furthermore, the electronic control device also includes a controller, a travel limit switch, and a wireless remote control module; there are at least two travel limit switches, which are respectively installed at both ends of the slide rail, for detecting the extreme positions of the wheel frame movement, and the travel limit switches are electrically connected to the controller; the wireless remote control module is electrically connected to the controller and is used to remotely control the forward rotation, reverse rotation, and stop of the drive motor; the controller controls the start, stop, and direction of the drive motor according to the signal from the travel limit switch or the instruction from the wireless remote control module.

[0013] Furthermore, the limiting hole includes two side baffles and a pin passing through the two side baffles.

[0014] More preferably, the shaft is a bolt pin, which is bolted to an angle bracket welded and fixed to the side wall of the door panel bracket body. The angle bracket includes a vertical plate and a horizontal plate. The lever hook is attached to the vertical plate and connected in series by the shaft. When the lever hook is in a horizontal state, it is spaced vertically from the horizontal plate. The width of the horizontal plate is less than 1 / 2 of the length of the lever hook.

[0015] A manual opening and closing method for a conveniently locking heavy-duty door opener, applied to the aforementioned conveniently locking heavy-duty door opener, is characterized by: S1, Manual Mode: Push and pull the heavy-duty door body directly. The top moving pulley rolls along the slide rail, and the hanging rope drives the door panel bracket body and the heavy-duty door body to move smoothly. S2, Closing the doorway: When the heavy door body moves to the doorway, the pressure bar is pressed down, causing the pivot rod to rotate around the ear hole as the fulcrum, which in turn drives the short pivot rod to rotate. During the rotation of the short pivot rod, the pull rod body is pulled down, and the pull rod body drives the lever hook to rotate around the pivot rod. The hook end of the lever hook drives the heavy door body to move up to the hanging seat through the hanging rod. The hanging rods on both sides of the door panel are pushed into the limiting space of the hanging seat along the stop bar outside the inclined limiting space. The hanging seat bears the weight of the door panel and prevents the door panel from sliding or overturning accidentally. S3, Locking Heavy Door Body: Manually locks the heavy door body to the building structure next to the door opening. The pressure bar is limited in the limiting hole. Insert the pin into the limiting hole and pass through the end of the pressure bar.

[0016] An electric opening and closing method for a heavy-duty door lifter includes the steps S2 and S3 described above, characterized in that, in step S1, the heavy-duty door body is moved horizontally by a hanging rail system driven by an electronic control device.

[0017] Compared with the prior art, the present invention has the following characteristics and beneficial effects: The split design makes inspection and maintenance extremely convenient. This invention employs a separate design for the heavy-duty door body and the hanger system. Hanging rods are installed on both sides of the heavy-duty door body, while hook devices are installed on both sides of the door panel hanger body of the hanger system. During normal use, the hanging rods are hooked onto the hooks of the lever hooks, and the hanger system is suspended from the slide rail via ropes and top-moving pulleys, enabling the lifting of the door body. When it is necessary to inspect the door body or clean the area behind the doorway, there is no need to disassemble the hanger system. Simply operate the opening and closing pivot frame to rotate and disengage the lever hooks, allowing the heavy-duty door body to be removed from the hanger system. Conversely, after door maintenance is completed, aligning the hanging rods with the hooks and operating the pressure rod quickly completes the reattachment. This "separable hanging" structure completely changes the drawbacks of traditional rigidly fixed door bodies and hangers, making separation difficult, and greatly facilitating on-site maintenance, replacement, and emergency handling.

[0018] The hook-and-lock mechanism combines lifting and hooking actions, making it effortless and stable. This invention differs from conventional door hinge or direct lifting methods. Through the coordination of a hook device (lever hook, pull rod body, and opening / closing pivot frame) and a mounting bracket, an integrated "translation-lifting-hooking" action is achieved. When the pressure bar is pressed down, the opening / closing pivot frame drives the lever hook to rotate around the pivot rod via the pull rod body. The hook end moves the hanging rod upwards, thus guiding it into the limiting space of the mounting bracket. During this process, the stop bar and upright plate of the mounting bracket provide guidance and limitation, and the weight of the door is ultimately borne by the sturdy wall-mounted mounting bracket, rather than being constantly stressed by the hanging system. This design not only utilizes the lever principle to make lifting easier, but more importantly, the hanging rod and mounting bracket have a stable hook-up through surface contact or rod-groove fit. Compared to traditional hinge points, the force is more distributed, there is no rotational wear, and when the door is closed, the weight of the door itself increases the stability of the hook-up, preventing accidental disengagement. Simultaneously, the pressure bar can be inserted into the limiting hole and locked by a pin to maintain the door in the raised state, achieving mechanical self-locking.

[0019] The operation logic is clear and it is suitable for multiple driving methods: This invention supports both manual pushing and pulling (manual mode) and electric mode driven by electronic control devices (motor, wire rope traction). In electric mode, after the door is moved into the doorway, the final door-opening and hooking action is still completed by manually or through an auxiliary actuator pressing down the lever, resulting in good structural compatibility. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a heavy-duty door opener for easy locking, as described in this application. Figure 2 This is a diagram illustrating the connection between the hook device and the mounting bracket involved in this application; Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 This is a structural diagram of the mount involved in this application; Figure 5 This is a schematic diagram of the pin structure involved in this application.

[0021] Reference numerals: 1-Heavy-duty door body; 11-Hanging rod; 2-Hanging system; 21-Door panel hanging frame body; 211-Ear hole; 22-Hanging rope; 3-Hanging rail system; 31-Slide rail; 32-Top moving pulley; 4-Hook device; 41-Lever hook; 42-Pull rod body; 43-Opening and closing pivot frame; 431-Spindle rod; 432-Pressure rod; 433-Short rotating rod; 44-Shaft rod; 5-Hanging seat; 51-Wall panel; 52-Upright plate; 53-Stop bar; 54-Oblong hole; 6-Limiting hole; 61-Baffle; 62-Pin shaft; 621-Pin cylinder; 622-Bead groove; 623-Clamping bead; 624-Flexible retaining ring; 625-Frustum component; 626-Spring; 627-Screw; 628-Screw sleeve; 7-Electrical control device. Detailed Implementation

[0022] To make the technical means, innovative features, objectives and effects of this invention easier to understand, the invention will be further described below.

[0023] The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein. Example 1

[0024] This embodiment provides a heavy-duty door opener for easy locking, the overall structure of which is as follows: 1. Main components The heavy-duty hanging door includes a heavy-duty door body 1, a hanging system 2 for supporting and moving the door body, a hanging rail system 3 for suspending the hanging system 2 and guiding its horizontal movement, and a mounting bracket 5 for ultimately bearing the weight of the door body and achieving locking.

[0025] It is important to understand that this invention designs the heavy-duty door body 1 and the hanger system 2 as a detachable structure, rather than a traditional one-piece rigid connection. The core purpose of this design is that when the door needs to be inspected or replaced, or when the area behind the door opening needs to be cleaned, it is not necessary to disassemble the entire hanger system 3; simply remove the door body from the hanger system 2, greatly facilitating daily maintenance. The heavy-duty door body 1 is a thick, insulated door panel, with a horizontally extending hanging rod 11 fixed on each of its left and right sides. The hanging rod 11 is made of round steel and serves as the connection point between the door body and the hanger system 2.

[0026] 2. Specific structure of the hanger system The hanging system 2 includes a door panel hanging body 21, a hanging rope 22 fixed on the door panel hanging body 21, and hook devices 4 symmetrically arranged on the left and right sides of the door panel hanging body 21.

[0027] The door panel hanger body 21 is a rectangular frame welded from steel profiles, with the lower end of the suspension rope 22 fixedly connected to the center of its top or symmetrically positioned. The upper end of the suspension rope 22 is fixedly connected to the top moving pulley 32 of the hanging rail system 3. The suspension rope 22 flexibly suspends the entire hanger system 2 below the sliding rail 31, allowing the door panel hanger body 21 to have a certain adaptive adjustment margin during horizontal movement, avoiding jamming due to unevenness of the sliding rail 31 or uneven weight of the door. Steel wire rope is preferred for the suspension rope 22.

[0028] The hook device 4 is used to achieve detachable connection with the hanging rod 11 of the heavy-duty door body 1. The hook device 4 is the core component of the present invention to achieve the "detachable design", which replaces the bolt fixing or welding connection between the door body and the hanger in the traditional hanging door. Each hook device 4 includes a lever hook 41, a shaft 44 and a set of pull rod devices. The entire hanger system uses two sets of hook devices 4. The lever hook 41 has a shaft hole in the middle and is hinged to the corner bracket on the side wall of the door panel hanger body 21 through the shaft 44. The lever hook 41 can rotate around the shaft 44. One end of the lever hook 41 is the hook end, which is used to hook the hanging rod 11; the other end is the connecting end, which is connected to the pull rod device. The function of this lever structure is that when the pull rod device is operated, the hook end of the lever hook 41 can be raised upward (lifting the door body) or lowered downward (lowering the door body), realizing the connection or disconnection between the door body and the hanger 5.

[0029] The lever device includes a lever body 42 and an opening / closing pivot bracket 43. The lever body 42 is vertically arranged, with its upper end hinged to the connecting end of the lever hook 41; the lower end of the lever body 42 is hinged to the short rotating rod 433 of the opening / closing pivot bracket 43. The function of the lever body 42 is to convert the rotational motion of the opening / closing pivot bracket 43 into the swinging motion of the lever hook 41, thus acting as a bridge for power transmission.

[0030] The opening / closing pivot bracket 43 includes a horizontally positioned pivot rod 431, a pressure rod 432 fixed in the middle of the pivot rod 431, and short rotating rods 433 fixed at both ends of the pivot rod 431 and extending radially. The pivot rod 431 passes through an ear hole 211 opened in the middle of the door panel bracket body 21. The ear hole 211 is formed by welding a Z-shaped steel plate to the door panel bracket body 21 and can rotate freely within the ear hole 211. One end of the short rotating rod 433 is fixed to the pivot rod 431, and the other end is bolted to the lower end of the pull rod body 42. The opening / closing pivot bracket 43 is actually a "rocker-linkage" mechanism: the pressure rod 432 acts as the driving arm, the pivot rod 431 acts as the pivot, and the short rotating rod 433 acts as the output arm. When the operator presses down or raises the pressure rod 432, the short rotating rod 433 swings in the opposite direction, thereby driving the pull rod body 42 to move up and down. This design utilizes the lever principle, making operation very effortless.

[0031] The door panel bracket body 21 is also provided with a limiting hole 6, which is used to fix the pressure rod 432 after it is pressed down to the position. The limiting hole 6 is composed of two side baffles 61 and a pin 62 passing through the two side baffles 61. The pin 62 can be a regular bolt or a spring pin with anti-loosening function. The limiting hole 6 functions like a "locking groove". When the pressure rod 432 is pressed down to the lowest position, it is locked into the limiting hole 6 and locked with the pin 62. This can effectively prevent the pressure rod 432 from rebounding due to vibration or accidental contact, ensuring that the door always remains in the raised and hooked position when closed and will not fall down on its own.

[0032] 3. Specific structure of the hanging rail system The suspension rail system 3 includes a horizontally fixed slide rail 31 and a top-moving pulley 32 mounted on the slide rail 31. The slide rail 31 is preferably made of I-beam steel, with its lower flange serving as the track for the top-moving pulley 32. The top-moving pulley 32 includes at least two sets of pulleys, each set consisting of two pulleys supported on the top surface of the lower flange on both sides of the web of the I-beam steel, and connected as a single unit by a wheel frame. This symmetrical arrangement of the double pulleys ensures that the wheel frame is subjected to balanced forces during movement, preventing uneven wear or rail jamming. The wheel frame has lifting holes, and the upper end of the lifting rope 22 is fixed within these holes.

[0033] To achieve electric drive, guide pulleys can be installed at both ends of the slide rail 31, and a closed-loop traction steel wire rope can be wound around them. The wheel frame is fixedly connected to one side of the closed-loop traction steel wire rope. An electric control device 7 is installed at one end or beside the slide rail 31. The electric control device 7 includes a drive motor, a reducer, a drive wheel, a steel wire rope tensioning device, a controller, a travel limit switch, and a wireless remote control module. The drive motor drives the drive wheel to rotate through the reducer, thereby driving the closed-loop steel wire rope to circulate, which in turn drives the top moving pulley 32 and the entire hanging system 2 to move back and forth along the slide rail 31. It should be noted that the electric control device 7 of the present invention adopts a closed-loop steel wire rope traction method, which has the advantages of low noise, low cost, and simple installation and debugging compared with chain drive or rack drive. It is particularly suitable for places such as mushroom houses where noise is a certain requirement. The travel limit switch can ensure that the door can accurately stop at the door opening position every time, avoiding collisions caused by overshoot.

[0034] 4. Specific structure of the mounting bracket The mounting bracket 5 is used to bear the weight of the door and form a stable lock after the door is closed. The mounting bracket 5 includes a wall-mounted plate 51, a vertical plate 52 fixed to the wall-mounted plate 51, and a stop bar 53 fixed obliquely to the vertical plate 52. The wall-mounted plate 51 is fixed to the wall next to the door opening with expansion bolts. The vertical plate 52 has two rows of elongated holes 54. The stop bar 53 is bolted through the elongated holes 54 and connected to the vertical plate 52, thereby allowing adjustment of the tilt angle of the stop bar 53. The design of the elongated holes 54 allows on-site installers to fine-tune the angle of the stop bar 53 according to the actual door opening size and the position of the mounting bar 11, reducing the installation accuracy requirements and improving fault tolerance. The stop bar 53, the upper edge of the vertical plate 52, and the wall-mounted plate 51 together form a limiting space with the opening facing upward. The entrance to this limiting space is angled, functioning similarly to a "guide ramp": when the hanging rod 11 is lifted upwards, it first contacts the inclined surface of the stop bar 53, then slides naturally down the inclined surface into the bottom of the limiting space, achieving automatic centering and positioning. When the heavy-duty door body 1 is lifted, the hanging rods 11 on both sides slide down the inclined surface of the stop bar 53 into the limiting space, and the weight of the door body is transferred to the hanger 5 through the hanging rods 11. At this time, the hook device 4 of the hanger system 2 no longer bears the entire weight of the door body; the hanger 5 bears the main vertical load, and the hanger system 2 only plays a role in horizontal pushing and pulling and auxiliary positioning. This "hanger-bearing" design improves the long-term stability of the door body after it is closed and also reduces the fatigue burden on the hanger system 2 and the slide rail 31.

[0035] 5. Brief description of the action principle When the door needs to be closed, the operator or motor drives the heavy-duty door body 1 to move horizontally to the door opening position. At this time, the pressure rod 432 is pressed down, the pivot rod 431 rotates and drives the short pivot rod 433 to swing upward. The short pivot rod 433 pulls the pull rod body 42 upward, and the pull rod body 42 then pulls the connecting end of the lever hook 41 to rotate upward. The hook end of the lever hook 41 rotates downward and simultaneously lifts the hanging rod 11 upward. From a mechanical point of view, the fulcrum of the lever hook 41 is located at the pivot rod 44 in the middle. The power arm (distance from the connecting end to the fulcrum) is greater than the resistance arm (distance from the hook end to the fulcrum). Therefore, it is actually very easy to operate the pull rod device. Even if the door is very heavy, two adults working together can easily complete the lifting action. During the upward movement of the hanging rod 11, it slides into the limiting space along the inclined surface of the stop rod 53 of the hanging seat 5. Finally, the weight of the door is borne by the hanging seat 5. After the pressure rod 432 is pressed down to the position, it is locked into the limiting hole 6 and locked with the pin 62 to prevent rotation, thus completing the door closing and locking. Example 2

[0036] Based on Embodiment 1, when the pin 62 is a resilient pin, it mainly consists of the following components: Pin cylinder 621: Serves as the main outer shell of the elastic pin 62. It is a hollow cylinder with one end for insertion into the limiting hole 6 and the other end for mounting the adjustment component. Bead groove 622: Located on the outer wall of the insertion end of the pin cylinder 621, multiple grooves are evenly distributed along the circumference. Each bead groove 622 communicates with the interior of the pin cylinder 621.

[0037] Locking bead 623: Slidably disposed in each bead groove 622, and can extend and retract radially along the pin cylinder 621; when the locking bead 623 is partially exposed in the bead groove 622, it forms a locking protrusion.

[0038] Flexible retaining ring 624: Sleeve on the outside of the retaining bead 623, made of highly elastic rubber, used to prevent the retaining bead 623 from falling out of the bead groove 622, and at the same time seal the gap between the bead groove 622 and the retaining bead 623 to prevent dust, debris and other debris from entering, and ensure that the retaining bead 623 slides smoothly.

[0039] Frustum 625: Located inside pin cylinder 621, with its large end facing the rear end of pin cylinder 621 and its small end facing the retaining bead 623; the conical surface of frustum 625 can contact the retaining bead 623 and squeeze the retaining bead 623 so that it extends radially.

[0040] Spring 626: One end is connected to the large end of the frustum 625, and the other end is connected to the screw 627, used to provide elastic thrust to the frustum 625.

[0041] Screw 627: Threadedly engages with screw sleeve 628, and its axial position within screw sleeve 628 can be adjusted by rotation. Screw sleeve 628: Removably mounted at the rear end of pin sleeve 621 (i.e., the end furthest from the insertion end), used to receive and guide screw 627.

[0042] When the elastic pin 62 is inserted into the limiting hole 6, the walls of the baffles 61 on both sides of the limiting hole 6 first squeeze the retaining bead 623, causing the retaining bead 623 to overcome the thrust of the spring 626 and retract into the pin cylinder 621 along the bead groove 622. After the elastic pin 62 is fully inserted and passes through the limiting hole 6, the retaining bead 623 is released from the constraint of the hole wall, and the spring 626 pushes the frustum 625 to move towards the smaller end. The conical surface of the frustum 625 pushes the retaining bead 623 outward, causing part of the retaining bead 623 to extend out of the bead groove 622 and lock onto the baffle 61 on the other side of the limiting hole 6, forming a reverse locking. At this time, unless the retaining bead 623 is pushed back by force to overcome the spring force, the elastic pin 62 cannot be pulled out of the limiting hole 6, thus effectively resisting the axial pull-out force caused by vibration or accidental collision.

[0043] After prolonged use, spring 626 may experience elastic fatigue, resulting in insufficient ejection distance of the retaining bead 623 and weakened locking effect. In this case, the operator does not need to disassemble the entire elastic pin 62; simply rotating screw 627 adjusts its screw-in depth within the screw sleeve 628 to change the compression of spring 626, thereby compensating for the elastic force attenuation and restoring the ejection preload of retaining bead 623. Conversely, if the locking is too tight, making insertion and removal difficult, screw 627 can be loosened in the opposite direction to reduce the elastic force. This adjustment design significantly extends the service life of elastic pin 62 and reduces maintenance costs. The flexible retaining ring 624 not only prevents retaining bead 623 from falling out but also seals the gap in bead groove 622, preventing dust, moisture, or substrate debris from entering the mushroom house, workshop, or other environments, thus avoiding jamming of bead 623 and ensuring reliable operation of elastic pin 62 under harsh conditions. Example 3

[0044] Based on Embodiment 1, this embodiment provides two opening and closing methods for the above-mentioned heavy-duty hanging door: a manual opening and closing method and an electric opening and closing method.

[0045] I. Manual opening and closing methods S1. Manual Mode: The operator directly pushes and pulls the heavy-duty door body 1. The top moving pulley 32 rolls along the slide rail 31, and the suspension rope 22 drives the door panel bracket body 21 and the heavy-duty door body 1 to move smoothly horizontally, realizing the translation of the door opening or closing direction. It is recommended to push and pull the lower middle part of the door body with both hands during operation to ensure that the pushing force is evenly distributed and to avoid the door body tilting.

[0046] S2. Closing the Doorway (Lowering and Connecting the Door): When the heavy-duty door body 1 is moved to the doorway position, the operator presses down on the pressure lever 432. It is recommended to stand to the side of the door and hold the ends of the pressure lever 432 with both hands, applying downward pressure slowly and evenly until the hanging rod 11 slides into the limiting space of the mounting bracket 5. The pressure lever 432 drives the rotating shaft 431 to rotate around the ear hole 211. The short rotating rods 433 at both ends of the rotating shaft 431 rotate accordingly and pull down the pull rod body 42. The pull rod body 42 pulls down the connecting end of the lever hook 41, causing the lever hook 41 to rotate around the shaft 44. Its hook end lifts upward, lifting the entire heavy-duty door body 1 upward through the hanging rod 11. The specific lifting height is determined by the rotation angle of the lever hook 41. During the lifting process, the hanging rods 11 on both sides of the heavy-duty door body 1 are pushed into the limiting space formed by the stop bar 53, the upright plate 52, and the wall-mounted plate 51 along the inclined surface of the stop bar 53 of the mounting base 5. If it is found that the hanging rod 11 cannot slide in smoothly, the door body can be pushed and pulled back and forth slightly. Specifically, when the hanging rod 11 is raised above the mounting base 5, the door body can be pressed against the wall-mounted plate 51 or the building wall with the body, and then the hook end of the lever hook 41 is lowered, and the door body can be automatically slid into place by using the guiding effect of the inclined surface of the stop bar 53. At this time, the pressure bar 432 is released, and the weight of the door body is completely transferred to the mounting base 5 through the hanging rod 11. The mounting base 5 bears the weight of the door body and prevents the door panel from accidentally sliding or tipping over. The hanging rods 11 are evenly spaced up and down along the side walls of both sides of the door panel mounting bracket body 21, and the hanging rods 11 and the mounting bases 5 are set one-to-one.

[0047] S3. Locking the Heavy-Duty Door Body 1: The operator manually locks the heavy-duty door body 1 to the locking components (such as bolts or door locks) on the building structure next to the door opening, and then presses the pressure rod 432 down to its lowest position and inserts it into the limiting hole 6, and inserts the pin 62 to fix it, ensuring that the pressure rod 432 will not spring back on its own. The locking components are usually located in the middle and bottom of the door body, and cooperate with the embedded parts in the walls on both sides of the door opening to achieve multi-point locking and enhance the sealing effect. The end of the pressure rod can be provided with a through hole for the pin to pass through.

[0048] When the doorway needs to be opened, first release the lock of the pressure rod 432: pull out the pin 62 in the limiting hole 6. When pulling out the pin 62, be careful to catch it with your hand to prevent it from falling. Then, the operator lifts the pressure rod 432 upwards by hand, causing the pressure rod 432 to rotate upwards around the axis of the rotating shaft 431. When the rotating shaft 431 rotates, the short rotating rods 433 at both ends rotate in the opposite direction (opposite to the direction of rotation when closing the door). The short rotating rods 433 push the pull rod body 42 upwards, and the pull rod body 42 then pushes the connecting end of the lever hook 41 upwards. The lever hook 41 rotates in the opposite direction around the shaft 44, and its hook end moves downwards, thereby causing the hanging rod 11 to move downwards and disengage from the limiting space of the hanging seat 5. Specifically, the hanging rod 11 slides out from the inclined limiting space formed by the stop bar 53, the upright plate 52, and the wall plate 51, first sliding downwards along the inclined surface of the stop bar 53, and finally completely disengaging from the hanging seat 5. At this point, the door body descends approximately 2-5 centimeters, and the bottom of the door falls back onto the lever hook 41. Due to the weight of the heavy door body 1, the pressure rod 432 is now vertical and away from the limiting hole 6. After this action, the weight of the heavy door body 1 is again borne by the lever hook 41 of the hanger system 2, and the door body descends to its horizontal sliding height. At this point, the door body can be gently shaken to confirm that the hanging rod 11 has completely disengaged from the hanger 5 before horizontal pushing and pulling, avoiding damage to components due to partial jamming.

[0049] S4. Opening the doorway: After the hanging rod 11 is disengaged from the hanging seat 5, the operator can directly push and pull the heavy door body 1 to move it horizontally along the slide rail 31 to open the doorway.

[0050] II. Electric opening and closing method The difference between electric and manual opening and closing methods lies only in the use of electric drive during the horizontal movement phase. The final closing of the doorway (door opening and locking) and the action of lifting the hanging rod from the mounting bracket can still be performed manually.

[0051] Preparation before horizontal movement: Before using the electric mode, ensure that the hanging rod 11 is disengaged from the mounting bracket 5 (i.e., the door is at the horizontal movement height). If the door is in the closed and locked state (the pressure rod 432 is locked in the limit hole 6), manually lift the pressure rod 432 according to the method described above for "how to lift the hanging rod from the mounting bracket" to disengage the hanging rod 11 from the mounting bracket 5, lower the door to the horizontal movement height, and then start the electric drive.

[0052] Electric horizontal movement: The operator sends a command via the wireless remote control module. After receiving the signal, the controller starts the drive motor. The motor drives the drive wheel to rotate via the reducer, and the drive wheel drives the closed-loop traction steel wire rope to move in a circular motion. The steel wire rope drives the wheel frame of the top moving pulley 32 and the entire hanging system 2 to move horizontally along the slide rail 31, and the heavy-duty door body 1 moves horizontally accordingly. When operating the remote control, there are usually three basic buttons: "Forward", "Backward", and "Stop". Pressing and holding the forward button moves the door in the closing direction. Releasing the button or triggering the travel limit switch will automatically stop the door. It is recommended to perform a short test run first to confirm that the direction of movement is correct before continuous operation. When the wheel frame moves to the end of the slide rail 31 and triggers the travel limit switch, the controller automatically stops the motor to ensure that the door body stops accurately at the door opening position.

[0053] After the door is in place, the operation method of closing the door opening (lifting and hooking the door) and locking is exactly the same as steps S2 and S3 in the manual opening and closing method: the operator manually presses down the pressure rod 432 to raise the hanging rod 11 and hook it into the limiting space of the hanging seat 5, and finally locks the pressure rod 432 into the limiting hole 6.

[0054] When opening the doorway, first operate manually: pull out pin 62, lift the pressure rod 432 upwards to disengage the hanging rod 11 from the mounting bracket 5 (the specific actions are the same as described above in "How to lift the hanging rod from the mounting bracket"). Then, start the motor in reverse using the remote control to horizontally pull open the heavy-duty door body 1. When opening electrically, it is also recommended to first perform a short burst to confirm that the door body has completely disengaged from the mounting bracket and that the movement trajectory is unobstructed before continuing to operate.

[0055] 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, 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 heavy-duty door opener for easy locking, characterized in that: It includes a heavy-duty door body (1), a hanger system (2) for supporting the heavy-duty door body (1), a hanging rail system (3) for supporting the hanger system (2), and a bracket (5) for supporting the heavy-duty door body (1). The hanging system (2) includes a door panel hanging body (21), a hanging rope (22) fixed on the door panel hanging body (21), and hook devices (4) on both sides of the door panel hanging body (21). The heavy-duty door body (1) is provided with hanging rods (11) on both sides, and the hanging rods (11) are hooked on the hook devices (4). The hanging rail system (3) includes a slide rail (31) and a top moving pulley (32). The hanging rope (22) is fixedly connected to the top moving pulley (32). The top moving pulley (32) moves left and right on the slide rail (31) to realize the left and right movement of the heavy-duty door body (1) along the slide rail (31), thereby closing and opening the door opening. The hook device (4) includes a lever hook (41), a shaft (44) for supporting the lever hook (41), and a pull rod device. The hanging rod (11) is hung on the hook end of the lever hook (41). The pull rod device includes a pull rod body (42) connected to the rod end of the lever hook (41) away from the hook end, and an opening and closing pivot frame (43) for pulling the pull rod body (42). The middle parts of the two lever hooks (41) are respectively supported on the shafts (44) on both sides of the door panel bracket body (21) and rotate around the shafts (44). The opening and closing... The pivot bracket (43) includes a pivot rod (431), a pressure rod (432), and a short rotating rod (433) mounted on the pivot rod (431) and directly bolted to the pull rod body (42). The pivot rod (431) passes through the ear holes (211) spaced apart from the door panel bracket body (21) and is limited within the ear holes (211). The short rotating rod (433) is located at both ends of the pivot rod (431) passing through the ear holes (211). The door panel bracket body (21) is also provided with a limiting hole (6) for locking the pressure rod (432) by means of a pin (62).

2. The heavy-duty door opener for easy locking according to claim 1, characterized in that: The ends of the pull rod body (42) connected to the lever hook (41) and the short rotating rod (433) are provided with several through holes at intervals. After the through holes on both sides are connected, they are connected by bolts, thereby making the pull rod body (42) hinged to the lever hook (41) and the short rotating rod (433).

3. A heavy-duty door opener for easy locking according to claim 1, characterized in that: The hanging bracket (5) includes a wall-mounted plate (51), a vertical plate (52) fixed on the wall-mounted plate (51), and a stop bar (53) fixed obliquely on the vertical plate (52). The hanging bar (11) is hung in the limiting space formed by the stop bar (53), the upper edge of the vertical plate (52), and the wall-mounted plate (51). The vertical plate (52) is provided with two rows of elongated holes (54). The stop bar (53) is bolted to the two rows of elongated holes (54) (the elongated holes are used to adjust the angle of the stop bar 53 so that the hanging bar 11 after being raised can be smoothly connected with the stop bar 53).

4. A heavy-duty door opener for easy locking according to claim 3, characterized in that: The slide rail (31) is an I-beam; the top moving pulley (32) includes at least two sets, each set of top moving pulleys (32) includes two pulley sets, the two pulley sets are respectively supported on the top surface of the lower flange plate on both sides of the web of the I-beam, and are connected into one piece by the wheel frame; the wheel frame is provided with a lifting hole, and the upper end of the lifting rope (22) is fixed to the lifting hole.

5. A heavy-duty door opener for easy locking according to claim 4, characterized in that: The slide rail (31) is provided with guide pulleys at both ends; a closed-loop traction steel wire rope passes around the two guide pulleys, and the wheel frame is fixedly connected to one side of the closed-loop traction steel wire rope; an electric control device (7) is provided on or beside the slide rail (31), and the electric control device (7) includes a drive motor, a reducer, a drive wheel and a steel wire rope tensioning device. The drive motor drives the drive wheel to rotate via a reducer. The drive wheel presses against and drives the closed-loop traction wire rope to circulate. The wire rope tensioning device is used to adjust the tension of the closed-loop traction wire rope. The drive motor controls the circulation direction of the closed-loop traction wire rope, thereby driving the wheel frame and the top moving pulley (32) to move back and forth along the I-beam, thus realizing the left and right displacement of the heavy-duty door body (1) and the door panel bracket body (21).

6. A heavy-duty door opener for easy locking according to claim 5, characterized in that: The electronic control device also includes a controller, a travel limit switch, and a wireless remote control module; there are at least two travel limit switches, which are respectively installed at both ends of the slide rail (31) to detect the extreme positions of the wheel frame movement, and the travel limit switches are electrically connected to the controller; the wireless remote control module is electrically connected to the controller and is used to remotely control the forward rotation, reverse rotation, and stop of the drive motor; the controller controls the start, stop, and direction of the drive motor according to the signal of the travel limit switch or the instruction of the wireless remote control module.

7. A heavy-duty door opener for easy locking according to claim 5, characterized in that: The limiting hole (6) includes two side baffles (61) and a pin (62) passing through the two side baffles (61).

8. A heavy-duty door opener for easy locking according to claim 5, characterized in that: The shaft (44) is a bolt pin, which is bolted to the corner bracket welded and fixed to the side wall of the door panel bracket body (21). The corner bracket includes a vertical plate and a horizontal plate. The rod of the lever hook (41) is attached to the vertical plate and then connected in series through the shaft (44). When the lever hook (41) is in a horizontal state, it is spaced up and down with the horizontal plate. The width of the horizontal plate is less than 1 / 2 of the length of the lever hook.

9. A method for manually opening and closing a heavy-duty door opener with convenient locking, applied to the heavy-duty door opener with convenient locking as described in any one of claims 1-8, characterized in that: S1, Manual mode: Push and pull the heavy door body (1) directly, the top moving pulley (32) rolls along the slide rail (31), and the hanging rope (22) drives the door panel bracket body (21) and the heavy door body (1) to move smoothly; S2, closing the doorway: When the heavy door body (1) moves to the doorway, the pressure rod (432) is pressed down, causing the pivot rod (431) to rotate around the ear hole (211), which in turn drives the short pivot rod (433) to rotate. During the rotation of the short pivot rod (433), the pull rod body (42) is pulled down. The pull rod body (42) drives the lever hook (41) to rotate around the pivot rod (44). The hook end of the lever hook (41) drives the heavy door body (1) to move up to the hanging seat (5) through the hanging rod (11). The hanging rods (11) on both sides of the door panel are pushed into the limiting space of the hanging seat (5) along the stop bar (53) outside the inclined limiting space. The hanging seat (5) bears the weight of the door panel and prevents the door panel from sliding or overturning unexpectedly. S3, Locking the heavy door body (1): Manually lock the heavy door body (1) and the locking component of the building structure next to the door opening. The pressure rod (432) is limited in the limiting hole (6). Specifically, the pin (62) is inserted into the limiting hole (6) and passes through the end of the pressure rod (432).

10. An electric opening and closing method for a heavy-duty door opener, comprising steps S2 and S3 of claim 9, characterized in that, In step S1, the heavy-duty door body is moved horizontally by driving the hanging rail system through an electronic control device.

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