A fall protection structure for building elevator shafts

Abstract

This application provides a fall protection structure for building elevator shafts, relating to the field of elevator protection. It includes a horizontal track, a displacement frame, and a safety door, further comprising: a locking element fixedly installed at one end of the displacement frame; a locking mechanism installed inside the elevator shaft, with two locking elements engaging with the locking mechanism to restrict the opening of the safety door; and an unlocking trigger mechanism fixedly installed at the top of the elevator, releasing the restriction on the locking elements when the elevator door reaches the corresponding position of the safety door. This application, through the design of the locking element and locking mechanism, achieves automatic forced locking when the safety door is closed; through the linkage between the unlocking trigger mechanism and the locking mechanism, it ensures that the safety door is automatically unlocked only when the elevator reaches the corresponding floor, solving the problem in existing technologies where doors can be opened arbitrarily at non-stop floors, resulting in falls into the shaft, and achieving a "door moves with the elevator" safety interlock.

Description

Technical Field

[0001] This invention relates to the field of elevator safety, and more specifically, to a fall protection structure for building elevator shaft openings. Background Technology

[0002] To prevent construction workers and materials from falling from elevator shafts, relevant national safety regulations mandate the installation of safety doors at elevator shaft openings on each floor.

[0003] However, existing elevator shaft safety doors have obvious defects in actual use: existing safety doors generally lack a reliable locking structure when closed, and most rely only on the weight of the door leaf or simple latches to achieve closure, resulting in an unlocked or weakly locked state.

[0004] This design makes the safety door extremely easy to open, failing to guarantee its reliable closure when not in use, severely impacting the safety of the shaft opening and posing a significant risk of falls from heights. Therefore, there is an urgent need for a fall protection structure that can automatically lock when closed and unlock in conjunction with the elevator's movement position to address the problem of accidental opening of safety doors in existing technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a fall protection structure for building elevator shafts, which solves the problem in the prior art where elevator shaft protection doors need to be manually locked and cannot be automatically linked with the elevator's operating position, resulting in poor safety.

[0006] The application is as follows:

[0007] The system includes horizontal tracks, a displacement frame, and a safety door installed on the upper and lower sides of the elevator shaft opening. Rollers are fixedly installed on the side walls of the displacement frame, which is slidably mounted within the horizontal tracks via the rollers. The system also includes:

[0008] A locking element is fixedly installed at one end of the displacement frame;

[0009] The locking mechanism is installed inside the elevator shaft opening. Two locking elements engage with the locking mechanism to prevent the safety door from opening.

[0010] The unlocking trigger mechanism is fixedly installed on the top of the elevator. When the elevator door moves to the corresponding position of the safety door, it releases the restriction on the locking element.

[0011] As a preferred technical solution of this application, the locking element includes a fixing part and a fastening part integrally formed with the fixing part, the fastening part having a fastening surface that is perpendicular to the fixing part.

[0012] As a preferred technical solution of this application, the side wall of the fixing part is provided with a mounting hole, and the fixing part is fixedly installed on the side wall of the displacement frame by bolts.

[0013] As a preferred technical solution of this application, the roller includes a roller frame and two pulleys fixedly installed on the inner side wall of the roller frame. The roller frame is fixedly installed on the inner side wall of the displacement frame by bolts. The number of rollers is multiple, equidistantly installed on the side wall of the displacement frame in a symmetrical manner.

[0014] As a preferred technical solution of this application, the locking mechanism includes a fixed support, a buckle is slidably connected to the inner side wall of the fixed support, the buckle and the fixed support are elastically engaged by a fixedly connected spring, a linkage element is hinged to the inner side wall of the fixed support, and a driving element is slidably inserted into the middle of the fixed support.

[0015] As a preferred technical solution of this application, the inner sidewall of the fixed support is provided with a vertical sliding groove, and the buckle has a slider adapted to the vertical sliding groove so that the buckle can only slide up and down relative to the fixed support.

[0016] As a preferred technical solution of this application, the buckle has a locking part that abuts against the fastening part, the linkage element is rotatably engaged with the fixed support through a horizontal rotating shaft, and a torsion spring is mounted on the horizontal rotating shaft. The torsion spring is connected to the fixed support and the linkage element to provide elastic potential energy for the linkage element to reset.

[0017] As a preferred technical solution of this application, the driving component includes a top plate that is slidably inserted into the middle of the fixed support and an inclined abutment that is fixedly connected to the fixed support, wherein the height of the inclined abutment is lower than the height of the top plate.

[0018] As a preferred technical solution of this application, the unlocking trigger mechanism includes a fixing member fixedly connected to the top of the elevator. A pressure plate is slidably inserted into the inner side wall of the fixing member. The pressure plate and the fixing member are elastically engaged by a spring connected to them. After the pressure plate abuts against the inclined surface of the inclined surface contact member, the spring is compressed horizontally to avoid contact.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In the scheme of this application:

[0021] 1. By setting up locking elements and locking mechanisms, automatic forced locking is achieved when the protective door is closed, which solves the high-risk problem of the protective door being left open due to easy forgetting when relying on manual locking in the existing technology, and greatly improves the safety of the wellhead;

[0022] 2. By linking the unlocking trigger mechanism and the locking mechanism, the safety door can be automatically unlocked only when the elevator reaches the corresponding floor, which solves the problem in the existing technology that the door can be opened at any non-stop floor and the elevator can fall into the shaft. This achieves a safety interlock of "door moves with elevator".

[0023] 3. By using the inclined contact component to cooperate with the inclined plate, the elevator can automatically avoid non-stopping floors, which solves the problem of accidental activation of the unlocking mechanism in the existing technology and ensures the stability and reliability of the equipment operation. Attached Figure Description

[0024] Figure 1 A schematic diagram of an overall structure for a fall protection structure for an elevator shaft in a building, provided in this application;

[0025] Figure 2 A schematic diagram of the usage state of a fall protection structure for an elevator shaft in a building, provided in this application;

[0026] Figure 3 A structural schematic diagram of a displacement frame, locking element, and locking mechanism for a building elevator shaft anti-fall protection structure provided in this application;

[0027] Figure 4 A structural schematic diagram of a locking element and locking mechanism for an anti-fall protection structure at a building elevator shaft provided in this application;

[0028] Figure 5 This application provides a schematic diagram of the unlocking trigger mechanism of a fall protection structure for building elevator shafts.

[0029] Figure 6 This is a partial side view of the displacement frame, locking element, and locking mechanism of a building elevator shaft anti-fall protection structure provided in this application.

[0030] The image shows:

[0031] 1. Displacement frame; 11. Rollers; 12. Protective door;

[0032] 2. Locking element; 21. Fixing part; 22. Fastening part;

[0033] 3. Locking mechanism; 31. Fixed support; 32. Buckle; 33. Spring 1; 34. Linkage element; 35. Driving component; 351. Top plate; 352. Inclined contact element; 36. Locking part;

[0034] 4. Unlock trigger mechanism; 41. Fixing component; 42. Pressure plate; 43. Spring 2. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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.

[0036] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Please see Figures 1 to 6 This invention provides a technical solution: a fall protection structure for an elevator shaft, comprising a horizontal track, a displacement frame 1, and a protective door 12 installed on the upper and lower sides of the elevator shaft. Rollers 11 are fixedly installed on the side wall of the displacement frame 1, and the displacement frame 1 is slidably installed within the horizontal track via the rollers 11. The structure also includes:

[0041] Locking element 2 is fixedly installed at one end of displacement frame 1;

[0042] The locking mechanism 3 is installed inside the elevator shaft opening. After the two locking elements 2 are engaged with the locking mechanism 3, the protective door 12 is restricted from opening.

[0043] The unlocking trigger mechanism 4 is fixedly installed on the top of the elevator. When the elevator door moves to the corresponding position of the protective door 12, it releases the restriction on the locking element 2.

[0044] As a preferred embodiment, based on the above method, the locking element 2 further includes a fixing part 21 and a fastening part 22 integrally formed with the fixing part 21, the fastening part 22 having a fastening surface that is perpendicular to the fixing part 21.

[0045] The side wall of the fixing part 21 is provided with mounting holes, and the fixing part 21 is fixedly installed on the side wall of the displacement frame 1 by bolts.

[0046] The locking element 2 is integrally bent from a high-strength steel plate. The fixing part 21 fits against the side of the displacement frame 1 and is fastened with bolts. The fastening part 22 extends vertically upward. When the protective door 12 is closed, the displacement frame 1 drives the locking element 2 to move towards the locking mechanism 3. The vertical end face of the fastening part 22 is directly inserted into the locking area of ​​the locking mechanism 3, and its fastening surface makes surface contact with the locking part 36 of the locking mechanism 3 to block it.

[0047] The one-piece molded structure ensures the load-bearing strength of the locking element 2 and prevents deformation and breakage when impacted; the vertically distributed locking surfaces provide reliable rigid limiting and blocking to prevent the protective door 12 from accidentally slipping off when subjected to external force.

[0048] The roller 11 includes a roller frame and two pulleys fixedly installed on the inner side wall of the roller frame. The roller frame is fixedly installed on the inner side wall of the displacement frame 1 by bolts. The rollers 11 are multiple and are installed symmetrically on the side wall of the displacement frame 1 at equal intervals.

[0049] Specifically, the pulleys are made of wear-resistant polyurethane, the horizontal track is made of C-shaped steel, the pulleys are embedded in the grooves of the C-shaped steel and roll, and a drive mechanism is also included to drive the opening and closing of the protective door.

[0050] When in use, when it is necessary to push or pull the protective door 12, force is applied to push the protective door 12, the displacement frame 1 is subjected to force, and rolls in the horizontal track through multiple sets of symmetrically distributed rollers 11, converting sliding friction into rolling friction.

[0051] The use of multiple symmetrically distributed roller structures makes the pushing and pulling of the protective door 12 smoother and easier, avoiding the jamming and wear caused by the unbalanced load of traditional doors, and greatly improving the smoothness of operation and the service life of the equipment.

[0052] As a preferred embodiment, based on the above method, the locking mechanism 3 further includes a fixed support 31, a buckle 32 is slidably connected to the inner wall of the fixed support 31, the buckle 32 and the fixed support 31 are elastically engaged by a fixedly connected spring 33, a linkage element 34 is hinged to the inner wall of the fixed support 31, and a driving element 35 is slidably inserted into the middle of the fixed support 31.

[0053] The inner wall of the fixed support 31 is provided with a vertical sliding groove, and the buckle 32 has a slider that matches the vertical sliding groove so that the buckle 32 can only slide up and down relative to the fixed support 31.

[0054] The buckle 32 has a locking part 36 that abuts against the fastening part 22. The linkage element 34 is rotatably engaged with the fixed support 31 via a horizontal rotating shaft. A torsion spring is mounted on the horizontal rotating shaft. The torsion spring is connected to the fixed support 31 and the linkage element 34, providing elastic potential energy for the linkage element 34 to reset.

[0055] When the fastening part 22 extends into the fixed support 31 along with the displacement frame 1, the fastening part 22 first contacts the guide slope of the locking part 36, and pushes the buckle 32 upward against the elastic force of the spring 33. After the fastening part 22 completely passes the locking part 36, the buckle 32 falls down and resets instantly along the vertical slide under the restoring force of the spring 33. The locking part 36 is tightly locked behind the fastening surface of the fastening part 22, and the automatic locking is completed. At this time, if there is no external force to drive the linkage element 34, the buckle 32 cannot move upward and the protective door 12 is locked.

[0056] The automatic locking design of spring 33 and buckle 32 realizes the operation of "locking when closing the door", completely eliminating the security loophole of people forgetting to lock the door; the vertical slide limit ensures the accuracy of the movement trajectory of buckle 32 and prevents it from getting stuck.

[0057] The driving component 35 includes a top plate 351 that is slidably inserted into the middle of the fixed support 31 and an inclined abutment 352 that is fixedly connected to the fixed support 31. The height of the inclined abutment 352 is lower than the height of the top plate 351. In order to further control the opening and closing, an electromagnet is installed on the fixed support 31, and a magnet block is installed on the top of the top plate 351 to correspond to the electromagnet. When the electromagnet is energized, it directly attracts the top plate 351, thereby causing the top plate 351 to move downward and press the driving linkage element 34 to achieve the purpose of controllable unlocking.

[0058] As a preferred embodiment, based on the above method, the unlocking trigger mechanism 4 further includes a fixing member 41 fixedly connected to the top of the elevator. A pressure plate 42 is slidably inserted into the inner side wall of the fixing member 41. The pressure plate 42 and the fixing member 41 are elastically engaged by a fixedly connected spring 43. After the pressure plate 42 abuts against the inclined surface of the inclined surface contact member 352, it compresses the spring 43 horizontally to avoid contact.

[0059] Operating steps and working principle:

[0060] 1. Avoidance when the elevator passes by without stopping: When the elevator passes by the floor, the pressure plate 42 installed on the top of the elevator moves accordingly. When the pressure plate 42 encounters the inclined contact piece 352, the end of the pressure plate 42 slides up the inclined surface. The horizontal compression spring 43 causes the pressure plate 42 to retract and avoid the collision. Then it continues to descend. The locking mechanism 3 does not move and the protective door 12 remains locked.

[0061] 2. Unlocking when the elevator stops at this floor: When the elevator stops at this floor, the vertical height of the pressure plate 42 is exactly aligned with the top plate 351. At this time, the pressure plate 42 moves slightly with the elevator and directly impacts the top plate 351 horizontally, pushing the drive component 35 to slide into the fixed support 31; the inner end of the drive component 35 pushes the linkage element 34 to rotate against the torsion spring, and the other end of the linkage element 34 lifts the buckle 32 upward, so that the locking part 36 disengages from the fastening surface of the fastening part 22, the buckle is released, and personnel can push open the protective door 12.

[0062] By using the inclined abutment 352 and the inclined avoidance design of the pressure plate 42, the fatal defect of accidental unlocking when the elevator passes by is cleverly solved; and only when the top plate 351 and the pressure plate 42 are in hard contact at the same height can unlocking be triggered, ensuring the absolute safety logic that "only the elevator can open the door on this floor", and realizing the physical level of mandatory interlocking protection.

[0063] Specifically, the fall protection structure at the elevator shaft of this building during operation / use:

[0064] Under normal circumstances, the safety door 12 is closed. The latch 32 in the locking mechanism 3 is firmly locked by the spring 33 to prevent accidental opening. When the elevator has not reached the floor, the locking mechanism 3 above the shaft cannot be triggered and cannot be opened by force. When the elevator reaches the floor and stops at the floor level, the pressure plate 42 at the top of the elevator pushes the top plate 351 of the drive component 35, the drive component 35 pushes the linkage component 34, and the linkage component 34 lifts the latch 32 to unlock. At this time, the construction personnel can push open the safety door 12 to enter. After the personnel leave, they can pull the safety door 12 closed, and the latch 2 will automatically spring back into the locking mechanism 3 to complete the automatic locking.

[0065] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A fall protection structure for an elevator shaft, comprising a horizontal track, a displacement frame (1), and a protective door (12) installed on the upper and lower sides of the elevator shaft, wherein rollers (11) are fixedly installed on the side wall of the displacement frame (1), and the displacement frame (1) is slidably installed in the horizontal track via the rollers (11), characterized in that, Also includes: The locking element (2) is fixedly installed at one end of the displacement frame (1); The locking mechanism (3) is installed above the elevator shaft opening. After the two locking elements (2) are engaged with the locking mechanism (3), the protective door (12) is restricted from opening. The unlocking trigger mechanism (4) is fixedly installed on the top of the elevator. When the elevator door moves to the corresponding position of the protective door (12), the restriction on the locking element (2) is released.

2. The anti-fall protection structure for building elevator shafts according to claim 1, characterized in that, The locking element (2) includes a fixing part (21) and a fastening part (22) integrally formed with the fixing part (21). The fastening part (22) has a fastening surface that is perpendicular to the fixing part (21).

3. The anti-fall protection structure for building elevator shafts according to claim 2, characterized in that, The side wall of the fixing part (21) is provided with a mounting hole, and the fixing part (21) is fixedly installed on the side wall of the displacement frame (1) by bolts.

4. The anti-fall protection structure for building elevator shafts according to claim 1, characterized in that, The roller (11) includes a roller frame and two pulleys fixedly installed on the inner side wall of the roller frame. The roller frame is fixedly installed on the inner side wall of the displacement frame (1) by bolts. The number of rollers (11) is multiple, equidistantly installed on the side wall of the displacement frame (1) in a symmetrical manner.

5. The anti-fall protection structure for building elevator shafts according to claim 1, characterized in that, The locking mechanism (3) includes a fixed support (31), and a buckle (32) is slidably connected to the inner wall of the fixed support (31). The buckle (32) and the fixed support (31) are elastically engaged by a fixedly connected spring (33). A linkage element (34) is hinged to the inner wall of the fixed support (31). A driving element (35) is also slidably inserted into the middle of the fixed support (31).

6. The anti-fall protection structure for building elevator shafts according to claim 5, characterized in that, The inner wall of the fixed support (31) is provided with a vertical groove, and the buckle (32) has a slider that is adapted to the vertical groove so that the buckle (32) can only slide up and down relative to the fixed support (31).

7. The anti-fall protection structure for building elevator shafts according to claim 6, characterized in that, The buckle (32) has a locking part (36) that abuts against the fastening part (22). The linkage element (34) is rotatably connected to the fixed support (31) via a horizontal rotating shaft. A torsion spring is mounted on the horizontal rotating shaft. The torsion spring is connected to the fixed support (31) and the linkage element (34) to provide elastic potential energy for the linkage element (34) to reset.

8. The anti-fall protection structure for building elevator shafts according to claim 7, characterized in that, The driving component (35) includes a top plate (351) that is slidably inserted into the middle of the fixed support (31) and an inclined abutment (352) that is fixedly connected to the fixed support (31). The height of the inclined abutment (352) is lower than the height of the top plate (351).

9. A fall protection structure for building elevator shafts according to claim 8, characterized in that, The unlocking trigger mechanism (4) includes a fixing member (41) fixedly connected to the top of the elevator. A pressure plate (42) is slidably inserted into the inner wall of the fixing member (41). The pressure plate (42) and the fixing member (41) are elastically connected by a spring (43). After the pressure plate (42) comes into contact with the inclined surface of the inclined surface contact member (352), it compresses the spring (43) in a horizontal manner to avoid it.

Images