Windproof structure for prefabricated cabin door
The windproof structure, which combines a limiting linkage with a hole, solves the problem of the prefabricated cabin door failing to lock under strong winds, achieving self-locking and stable opening of the door and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-03
AI Technical Summary
The existing prefabricated cabin doors are prone to locking failure in strong winds, causing the doors to close suddenly and damaging the doors and cabin body.
The windproof structure adopts a limit link and hole matching. The design of sliding link and guide plate realizes the self-locking limit of the door. The positioning part of the sliding link is embedded in the limit hole for locking. Combined with the unlocking component, stable unlocking is achieved.
It improves the operational efficiency of windproof limit switches, avoids the complexity of mechanical connections, and ensures that the hatch can be opened and closed stably in strong wind environments.
Smart Images
Figure CN224078913U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of prefabricated cabin door equipment, specifically to a windproof structure for prefabricated cabin doors. Background Technology
[0002] Precast wind turbine nacelles are prefabricated structures used in wind farm construction. Their design and manufacturing process fully considers the environmental characteristics and operational requirements of wind farms. With the rapid development of the wind power industry, the application of precast wind turbine nacelles is becoming increasingly widespread, becoming an important component of wind farm construction. Precast nacelles are often built in high-altitude, high-wind-force areas, necessitating the use of nacelle locking devices to prevent the nacelle doors from suddenly closing under wind force, thus preventing damage to the doors and the nacelle structure.
[0003] Existing locking devices often use bolts for tightening and fixing, but this method is easily damaged in strong winds, leading to locking failure. Utility Model Content
[0004] The first aspect of this utility model aims to solve the problem of easy failure of locking when opening the hatch of a prefabricated cabin in strong winds. It provides a windproof pull rod for the hatch of a prefabricated cabin, which can lock the limiting link through cooperation with a hole. The main concept is as follows:
[0005] A windproof structure for a prefabricated cabin door includes a cabin door, a mast, a locking assembly, and an unlocking assembly. The cabin door is hinged to the mast. The locking assembly includes a guide plate, a mounting base, and a sliding link. The guide plate is disposed on the side of the cabin door in the closing direction, and the mounting base is disposed above the mast. The sliding link includes a first slide rod, a second slide rod, and a connecting rod connecting the first slide rod and the second slide rod. The second slide rod is throttle-connected to the mounting base, and the first slide rod is throttle-connected to the guide plate.
[0006] The guide plate includes a guide strip hole and a limiting hole at the end of the guide strip hole. The inner diameter of the limiting hole is larger than the width of the guide strip hole. The first slide rod includes a first positioning part and a second positioning part. The first positioning part cooperates with the guide strip hole, and the second positioning part cooperates with the limiting hole. The first positioning part and the second positioning part are slidably engaged. When the first slide rod slides in the guide strip hole through the first positioning part, the hatch rotates around the mast. When the first slide rod is inserted into the limiting hole through the second positioning part, the sliding link locks the hatch.
[0007] The unlocking component acts on the sliding link, causing the second positioning part of the sliding link to disengage from the limiting hole, and the sliding link to release the lock on the hatch.
[0008] In this design, the hatch is movably connected to the mast via a hinge, allowing the hatch to rotate on one side of the mast. A mounting seat is installed on the mast to connect one end of a second sliding rod of a sliding linkage. A guide plate is provided on the inner side of the hatch in the opening direction to connect the other end of the sliding linkage, the first sliding rod. During hatch opening and closing, the mast remains fixed while the hatch moves. The sliding linkage rotates within the mounting seat on the mast and reciprocates linearly on the guide plate. When the hatch opens, the first positioning part of the first sliding rod slides towards the hinged end of the mast within the guide bar hole. When the first positioning part slides to the end of the guide bar hole, it enters a limiting hole with a larger inner diameter. At this point, the upper part of the first positioning sliding part... After the second positioning part is freed from the constraint of the guide strip hole panel, it embeds into the limiting hole, thus locking the second positioning part within the limiting hole. Since the outer diameter of the second positioning part, which cooperates with the limiting hole, is larger than that of the first positioning hole, the second positioning part cannot slide in the opposite direction along the guide strip hole. The hatch is constrained and locked by the second positioning part of the sliding link. It is not necessary to fix the sliding link through a mechanical connection. Simply opening the hatch to the appropriate position will allow the second positioning part of the sliding link to slide down along the first positioning part and embed into the limiting hole to achieve self-locking and limiting, thus improving the operational efficiency of windproof limiting. If unlocking is required, the second positioning part can be disengaged from the limiting hole by the unlocking component to restore the rotation of the hatch.
[0009] Preferably, the second positioning part is sleeved outside the first positioning part, and a limit retaining ring is provided at the upper end of the second positioning part. The second positioning part and the first positioning part slide together, so that when the second positioning part is located at the limit hole position, the second positioning part slides down along the first positioning part and is embedded into the limit hole for limitation. A limit retaining ring is provided on the upper end surface of the second positioning part. The outer diameter of the limit retaining ring is larger than the outer diameter of the limit hole, which can constrain the sliding position of the second positioning part on the first positioning part, so that the second positioning part will not slide out of the first sliding rod.
[0010] The second aspect of this invention addresses the technical problem of locking failure caused by the second positioning part failing to slide downwards and engage with the limiting hole when it jams. Further, the first slide rod includes a first mounting plate positioned above the second positioning part, with a first compression spring between the second positioning part and the first mounting plate. When the first connecting rod slides along the guide bar hole to the limiting hole position, the second positioning part loses the constraint of the baffles on both sides extending in the limiting hole direction. Under the restoring force of the first compression spring, a force is applied above the second positioning part, allowing it to smoothly engage with the limiting hole for positioning.
[0011] Preferably, the second slide bar includes an adjusting shaft and a limiting member, the adjusting shaft being connected to the mounting base in a driving connection, and the limiting member being located above the mounting base.
[0012] Preferably, the mounting base has a guide channel inside, the height of which is less than the height of the adjusting shaft, and the height difference between the guide channel and the adjusting shaft is greater than the height of the second positioning part. This design allows the adjusting shaft to be adjusted up and down more effectively within the guide channel, providing sufficient length for the unlocking assembly to unlock the sliding link, and allowing the second positioning part to smoothly disengage from the limiting hole.
[0013] The third aspect of this utility model aims to solve the technical problem of uneven force distribution leading to jamming during lifting of the sliding linkage. Further, the unlocking component includes a pull rope and a winding device. The winding device is installed on the gantry, and the two ends of the pull rope are connected to the winding device and the second slide rod, respectively. The point of action for lifting the sliding linkage is set at the top of the second slide rod. The second slide rod is not only guided by the guide channel, but the upward pull applied by the pull rope balances gravity, making the lifting of the sliding linkage more effortless and stable. If closing the door from outside the prefabricated cabin is required, the winding device is operated to wind the pull rope, and the second slide rod is lifted upward under the upward pull of the pull rope. This lifts the entire sliding linkage upward, causing the second positioning part on the first slide rod to disengage from the limiting hole. After the cabin door is unlocked and locked, it can begin to rotate around the gantry.
[0014] Preferably, the gantry further includes a second mounting plate, which is disposed above the mounting base. The second mounting plate is connected to the limiting member of the second slide rod via a second compression spring. The second mounting plate has a through hole for the pull rope to pass through. The limiting member includes a limiting ring and a bearing, and the limiting ring and the adjusting shaft are connected via the bearing. When the second slide rod is pulled upward by the pull rope of the external unlocking part to complete the unlocking, the force of the winding device on the pull rope is released. After the second slide rod loses the upward pulling force of the pull rope, it slides downward along the guide channel under the action of the reset force of the second compression spring until the limiting member abuts against the upper surface of the mounting base to complete the reset.
[0015] The beneficial effects of this utility model are as follows: by constraining and locking the hatch through the sliding link, the second positioning part of the sliding link can slide down along the first positioning part and embed into the limiting hole to achieve self-locking and limiting, thus improving the operational efficiency of windproof limiting. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a side view of the structure of this utility model.
[0018] Figure 3 This is a schematic diagram of the structure of the guide plate of this utility model.
[0019] Figure 4This is a schematic diagram of the structure of the first sliding rod of this utility model.
[0020] The reference numerals in the attached drawings include: 1. hatch; 2. gantry; 3. sliding link; 31. first positioning part; 32. second positioning part; 33. adjusting shaft; 34. limiting member; 4. guide plate; 41. guide strip hole; 42. limiting hole; 5. mounting base; 6. guide channel; 7. external unlocking part; 71. pull rope; 72. winder; 8. first mounting plate; 81. first compression spring; 9. second mounting plate; 91. second compression spring; 92. through hole. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.
[0022] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are defined based on the contours of the corresponding components. Terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not imply sequence or importance.
[0023] like Figures 1-4 As shown in the figure, this embodiment provides a windproof structure for a prefabricated cabin door, including a cabin door 1, a mast 2, a locking assembly, and an unlocking assembly. The cabin door 1 is hinged to the mast 2. The locking assembly includes a guide plate 4, a mounting base 5, and a sliding link 3. The guide plate 4 is disposed on the side of the cabin door 1 in the closing direction, and the mounting base 5 is disposed above the mast 2. The sliding link 3 includes a first slide rod, a second slide rod, and a connecting rod connecting the first slide rod and the second slide rod. The second slide rod is throttle-connected to the mounting base 5, and the first slide rod is throttle-connected to the guide plate 4.
[0024] The guide plate 4 includes a guide strip hole 41 and a limiting hole 42 provided at the end of the guide strip hole 41. The inner diameter of the limiting hole 42 is larger than the width of the guide strip hole 41. The first slide rod includes a first positioning part 31 and a second positioning part 32. The first positioning part 31 cooperates with the guide strip hole 41, and the second positioning part 32 cooperates with the limiting hole 42. The first positioning part 31 and the second positioning part 32 are slidably engaged. When the first slide rod slides in the guide strip hole 41 through the first positioning part 31, the hatch 1 rotates around the door frame 2. When the first slide rod is inserted into the limiting hole 42 through the second positioning part 32, the sliding link 3 locks the hatch 1.
[0025] The unlocking component acts on the sliding link 3, causing the second positioning part 32 of the sliding link 3 to disengage from the limiting hole 42, and the sliding link 3 to release the lock on the hatch 1.
[0026] In this design, the hatch 1 is movably connected to the mast 2 via a hinge, allowing the hatch 1 to rotate on one side of the mast 2. The mast 2 is equipped with a mounting seat 5 for connecting one end of the sliding link 3 to the second slide rod. The hatch 1 has a guide plate 4 on its inner side in the opening direction for connecting the other end of the sliding link 3 to the first slide rod. During the opening and closing process, the mast 2 remains fixed, the hatch 1 moves, and the sliding link 3 rotates within the mounting seat 5 on the mast 2. The sliding link 3 reciprocates linearly on the guide plate 4 of the hatch 1. When the hatch 1 opens, the first positioning part 31 of the first slide rod slides towards the hinged end of the mast 2 within the guide bar hole 41. When the first positioning part 31 slides to the end of the guide bar hole 41, it enters the position of the larger inner diameter limiting hole 42. At this time, the second slide rod above the first positioning sliding part... After the positioning part 32 is freed from the constraint of the guide strip hole 41 panel, the second positioning part 32 is inserted into the limiting hole 42, so that the second positioning part 32 is locked in the limiting hole 42. Since the outer diameter of the second positioning part 32 is larger than the first positioning hole when it cooperates with the limiting hole 42, the second positioning part 32 cannot slide in the opposite direction along the guide strip hole 41. The hatch 1 is constrained and locked by the second positioning part 32 of the sliding link 3. It is not necessary to fix the sliding link 3 through mechanical connection. It is only necessary to open the hatch 1 to a suitable position so that the second positioning part 32 of the sliding link 3 can slide down along the first positioning part 31 and be inserted into the limiting hole 42 to achieve self-locking and limit, which improves the operation efficiency of windproof limit. If it is necessary to unlock, the second positioning part 32 can be disengaged from the limiting hole 42 by the unlocking component to restore the rotation of the hatch 1.
[0027] Preferably, the second positioning part 32 is sleeved outside the first positioning part 31, and a limiting ring is provided at the upper end of the second positioning part 32. The second positioning part 32 and the first positioning part 31 are slidably engaged, so that when the second positioning part 32 is located at the limiting hole 42, the second positioning part 32 slides down along the first positioning part 31 and is embedded into the limiting hole 42 for limiting. A limiting ring is provided on the upper end surface of the second positioning part 32, and the outer diameter of the limiting ring is larger than the outer diameter of the limiting hole 42, which can constrain the sliding position of the second positioning part 32 on the first positioning part 31, so that the second positioning part 32 will not slide out of the first sliding rod.
[0028] Example 2
[0029] like Figures 1-4As shown, the first sliding rod in this embodiment also includes a first mounting plate 8, which is disposed above the second positioning part 32. A first compression spring 81 is disposed between the second positioning part 32 and the first mounting plate 8. When the first connecting rod slides along the guide bar hole 41 to the position of the limiting hole 42, the second positioning part 32 loses the constraint of the baffles on both sides of the limiting hole 42 in the extending direction. Under the restoring force of the first compression spring 81, it is applied above the second positioning part 32, so that the second positioning part 32 can be smoothly inserted into the limiting hole 42 for limiting.
[0030] Preferably, the second slide bar includes an adjusting shaft 33 and a limiting member 34. The adjusting shaft 33 is connected to the mounting base 5 in a transmission manner, and the limiting member 34 is located above the mounting base 5.
[0031] Preferably, the mounting base 5 has a guide channel 6 inside, the height of the guide channel 6 is less than the height of the adjusting shaft 33, and the height difference between the guide channel 6 and the adjusting shaft 33 is greater than the height of the second positioning part 32. This design allows the adjusting shaft 33 to be adjusted up and down more effectively within the guide channel 6, providing sufficient length for the unlocking assembly to unlock the sliding link 3, and allowing the second positioning part 32 to smoothly disengage upward from the limiting hole 42.
[0032] Example 3
[0033] like Figure 2 As shown, the unlocking assembly in this embodiment includes a pull rope 71 and a winder 72. The winder 72 is installed on the gantry 2, and the two ends of the pull rope 71 are connected to the winder 72 and the second slide bar, respectively. When it is necessary to close the door from outside the prefabricated cabin, the pull rope 71 is wound around the winder 72 by operating the winder 72. The second slide bar is lifted upward under the upward pulling force of the pull rope 71, and the entire sliding link 3 is lifted upward, thereby causing the second positioning part 32 on the first slide bar to disengage upward from the limiting hole 42. After the cabin door 1 is unlocked and locked, it can begin to rotate around the gantry 2.
[0034] In this embodiment, the winding device 72 can be installed outside the prefabricated compartment, inside the prefabricated compartment, or both inside and outside the prefabricated compartment.
[0035] The gantry 2 also includes a second mounting plate 9, which is positioned above the mounting base 5. The second mounting plate 9 is connected to the limiting member 34 of the second slide rod via a second compression spring 91. The second mounting plate 9 has a through hole 92 for the pull rope 71 to pass through. The limiting member 34 includes a limiting ring and a bearing, and the limiting ring and the adjusting shaft 33 are connected via the bearing. When the second slide rod is pulled upward by the pull rope 71 of the external unlocking part 7 to complete the unlocking, the force exerted by the winder 72 on the pull rope 71 is released. After the second slide rod loses the upward pulling force of the pull rope 71, it slides downward along the guide channel 6 under the action of the reset force of the second compression spring 91 until the limiting member 34 abuts against the upper surface of the mounting base 5 to complete the reset.
[0036] In this embodiment, the pull rope 71 is made of steel wire rope. In order to make the pull rope 71 pull more smoothly, some guide pulleys can be set at the turning position of the pull rope 71 to avoid friction between the pull rope 71 and the second mounting plate 9 or the gantry 2, which would result in a shorter lifespan of the pull rope 71.
[0037] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A wind protection structure for a prefabricated cabin door, characterized in that: The cabin door (1) is hingedly connected with the door frame (2), the locking assembly comprises a guide plate (4), a mounting seat (5) and a sliding link (3), the guide plate (4) is arranged on one side of the cabin door (1) in the closing direction, and the mounting seat (5) is arranged above the door frame (2); the sliding link (3) comprises a first sliding rod, a second sliding rod and a connecting rod connecting the first sliding rod and the second sliding rod, the second sliding rod is in transmission connection with the mounting seat (5), and the first sliding rod is in transmission connection with the guide plate (4); The guide plate (4) comprises a guide strip hole (41) and a limiting hole (42) arranged at the end of the guide strip hole (41), the inner diameter of the limiting hole (42) is greater than the width of the guide strip hole (41), the first sliding rod comprises a first positioning portion (31) and a second positioning portion (32), the first positioning portion (31) is matched with the guide strip hole (41), the second positioning portion (32) is matched with the limiting hole (42), and the first positioning portion (31) and the second positioning portion (32) are in sliding fit; when the first sliding rod slides in the guide strip hole (41) through the first positioning portion (31), the cabin door (1) rotates around the door frame (2), and when the first sliding rod is embedded in the limiting hole (42) through the second positioning portion (32), the sliding link (3) locks the cabin door (1). The unlocking assembly (7) acts on the sliding link (3), so that the second positioning portion (32) of the sliding link (3) is separated from the limiting hole (42), and the sliding link (3) releases the locking of the cabin door (1).
2. The windproof structure for the door of a prefabricated cabin according to claim 1, characterized in that: The second positioning portion (32) is arranged outside the first positioning portion (31), and the upper end of the second positioning portion (32) is provided with a limiting stop ring.
3. The wind protection structure for a prefabricated cabin door according to claim 1, characterized in that: The first sliding rod further comprises a first mounting plate (8), the first mounting plate (8) is arranged above the second positioning portion (32), and a first compression spring (81) is arranged between the second positioning portion (32) and the first mounting plate (8).
4. The wind protection structure for a prefabricated cabin door according to claim 1, characterized in that: The second sliding rod comprises an adjusting rotating shaft (33) and a limiting piece (34), the adjusting rotating shaft (33) is in transmission connection with the mounting seat (5), and the limiting piece (34) is located above the mounting seat (5).
5. The wind protection structure for a prefabricated cabin door according to claim 4, characterized in that: The inside of the mounting seat (5) is provided with a guide channel (6), the height of the guide channel (6) is less than the height of the adjusting rotating shaft (33), and the height difference between the guide channel (6) and the adjusting rotating shaft (33) is greater than the height of the second positioning portion (32).
6. The wind protection structure for a prefabricated cabin door according to claim 1, characterized in that: The unlocking assembly (7) comprises a pull rope (71) and a winding device (72), the winding device (72) is mounted on the door frame (2), and the two ends of the pull rope (71) are connected with the winding device (72) and the second sliding rod respectively.
7. The wind protection structure for a prefabricated cabin door according to claim 1, characterized in that: The door frame (2) further comprises a second mounting plate (9), the second mounting plate (9) is arranged above the mounting seat (5), the second mounting plate (9) is connected with the limiting piece (34) of the second sliding rod through a second compression spring (91), the second mounting plate (9) is provided with a through hole (92) through which the pull rope (71) passes, and the limiting piece (34) comprises a limiting ring and a bearing, and the limiting ring and the adjusting rotating shaft (33) are connected through the bearing.