Foldable elevator car roof protective fence structure and elevator

Abstract

The utility model discloses a foldable elevator car roof protective fence structure and an elevator. The foldable elevator car roof protective fence structure comprises a transverse fence assembly arranged on the front side of an elevator car roof, a first longitudinal fence assembly and a second longitudinal fence assembly, wherein the first longitudinal fence assembly and the second longitudinal fence assembly are oppositely arranged on the left side and the right side of the elevator car roof. Each of the transverse rail assembly, the first longitudinal rail assembly and the second longitudinal rail assembly comprises two parallel supporting bases, a folding rod is arranged on each supporting base, a cross beam is connected between the two folding rods, each folding rod is connected with the corresponding supporting base through a self-locking hinge, a first contact switch is arranged on the front side of each supporting base, and a second contact switch is arranged on the rear side of each supporting base. A first connecting rod is further hinged to the top of the side, away from the transverse bar assembly, of the first longitudinal bar assembly, a first mounting hole is formed in the free end of the first connecting rod, a positioning piece is arranged on the second longitudinal bar assembly, and the hinged position of the positioning piece and the first connecting rod is oppositely arranged. According to the scheme, the reliability of an elevator system is improved, meanwhile, rapid folding is facilitated, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevators, and in particular to a foldable elevator car top guardrail structure and an elevator. Background Technology

[0002] The elevator car top is a crucial work platform for maintenance personnel to inspect and debug equipment, and its safety measures are directly related to personnel safety. Currently, most car top safety railings use a fixed structure or a simple folding design. While fixed railings offer high stability, they occupy a significant amount of space on the car top, affecting the operational flexibility of maintenance personnel.

[0003] In existing technologies, to address the issue of space occupation on the elevator car top, some folding safety railings, such as the utility model patent with authorization announcement number CN204778117U, disclose a novel folding elevator car top safety railing. This railing can increase the height of the safety railing, reduce the requirement for the height of the building's top floor, lower construction costs, and adapt to elevators in buildings with high top floors, ensuring the safety of maintenance personnel during work. However, this simple folding safety railing still has the following problems:

[0004] First, insufficient status monitoring: There is a lack of reliable detection devices for the folding and unfolding states, and the elevator control system cannot accurately determine the status of the guardrails, which may lead to the elevator starting erroneously when the guardrails are not fully unfolded, posing a safety hazard. Second, poor structural stability: There is a lack of linkage locking mechanism between the guardrails on each side after folding, which can easily lead to local deformation or loosening due to uneven force when unfolding. Third, inconvenient operation: The traditional linkage design requires operating the guardrails side by side, resulting in low folding efficiency and difficulty in ensuring synchronous linkage on multiple sides, affecting rapid response in emergency situations.

[0005] Therefore, there is an urgent need for a guardrail structure that can be flexibly folded to optimize space and can monitor the status in real time and improve linkage stability, so as to meet the dual requirements of elevator safety standards and ease of maintenance. Utility Model Content

[0006] Therefore, in order to solve the above problems, this utility model provides a foldable elevator car top guardrail structure and an elevator.

[0007] This utility model is achieved through the following technical solution:

[0008] A foldable elevator car top guardrail structure includes at least a horizontal guardrail assembly disposed on the front side of the elevator car top and a first vertical guardrail assembly and a second vertical guardrail assembly disposed opposite each other on the left and right sides of the elevator car top. Each of the horizontal guardrail assembly, the first vertical guardrail assembly, and the second vertical guardrail assembly includes two parallel support bases. Each support base is provided with a folding rod that can rotate and fold 90° relative to its front. A crossbeam connects the folding rods on the two support bases. Each folding rod is connected to the support base via a self-locking hinge. The self-locking hinge includes a first hinge plate and a second hinge plate. The first hinge plate is fixed to the upper surface of the support base, and the second hinge plate is fixed to the folding rod. A first contact switch is provided on the front side of the support base. A first connecting rod is also hinged to the top of the first vertical column assembly on the side away from the horizontal column assembly. A first mounting hole is provided at the free end of the first connecting rod. A positioning member is provided on the second vertical column assembly. The positioning member is positioned opposite to the hinge point of the first connecting rod. In the unfolded state, each folding rod is perpendicular to its bottom support base. The positioning member is fixed in the first mounting hole of the first connecting rod, so that the first connecting rod connects the first vertical column assembly and the second vertical column assembly. In the folded state, the second hinge plate drives the folding rod to rotate forward 90° and fold, so that the folding rod is parallel to its bottom support base, and the first contact switch is triggered.

[0009] Preferably, a second contact switch is also provided on one side of the support base, and an L-shaped touch piece is also provided on the same side of the folding rod as the second contact switch. The touch piece includes a fixing part fixed to the side of the folding rod. The bottom of the fixing part is vertically bent to form a touch part for triggering the second contact switch. In the unfolded state, the touch part of the touch piece is located directly above the second contact switch and presses the second contact switch.

[0010] Preferably, the first connecting rod is hinged to the top of a folding rod of the first vertical column assembly away from the horizontal column assembly, and the positioning element is a first butterfly bolt, which is disposed at the top of a folding rod of the second vertical column assembly away from the horizontal column assembly.

[0011] Preferably, the crossbeam of the horizontal bar assembly is hinged to a second connecting rod on both sides, and the free end of the second connecting rod is provided with a second mounting hole. The first vertical bar assembly and the second vertical bar assembly are both provided with a second butterfly bolt on the folding rod on the side near the horizontal bar assembly.

[0012] Preferably, the crossbeam includes a first crossbeam and a second crossbeam arranged in parallel, the first crossbeam being located at the top of the folding rail, and the distance between the second crossbeam and the upper surface of the support base being equal to the distance between the first contact switch and the folding rod.

[0013] Preferably, a limiting seat is also provided on one side of the folding rod. The limiting seat includes a fixing part fixed to one side of the folding rod. The fixing part extends toward the front end of the folding rod and forms an L-shaped limiting part. One end of the limiting part is connected to the fixing part, and the other end is bent vertically and parallel to the folding rod. The connection between the limiting part and the fixing part is located at the bottom of the second crossbeam.

[0014] Preferably, two or more sets of first and second vertical columns are provided at intervals on both sides of the horizontal column component.

[0015] Preferably, the bottom of the two support seats of the horizontal bar assembly, the first vertical bar assembly, and the second vertical bar assembly are respectively connected to the surrounding panels.

[0016] An elevator, including the foldable elevator car top guardrail structure described above.

[0017] The beneficial effects of this utility model's technical solution are mainly reflected in:

[0018] 1. The contact sensing devices of each guardrail adopt a redundant design. By setting contact switches at the unfolded and folded ends, the status of the guardrail is fed back to the elevator control system in real time, ensuring that the elevator is only allowed to operate when the guardrail is fully unfolded, avoiding the risk of people falling. This facilitates real-time detection of the status of each guardrail, improving the reliability and safety performance of the system. In addition, the contact switch signals can be connected to the elevator Internet of Things system to remotely monitor the status of the guardrail and record operation logs, meeting the needs of smart elevator management.

[0019] 2. The first and second vertical rail components, as well as the horizontal rail components, are connected to the first and second vertical rail components via detachable connecting rods, forming a closed-loop connection in the unfolded state. This enhances the overall structure's resistance to lateral impacts, limits the spacing between railings to prevent maintenance personnel from accidentally stepping into gaps, and disconnects the connections in the folded state to prevent interference between railings. This facilitates quick folding. Furthermore, the connecting rods feature a quick-release plug-in design, allowing for simultaneous folding of multiple sides by disengaging only one side, thus improving operational efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the foldable elevator car top guardrail structure in its unfolded state;

[0021] Figure 2 yes Figure 1 Enlarged view of section A;

[0022] Figure 3 yes Figure 1 Enlarged view of section B;

[0023] Figure 4 yes Figure 1 Enlarged view of section C;

[0024] Figure 5 This is a schematic diagram of the foldable elevator car top guardrail structure in its folded state.

[0025] Figure 6 yes Figure 5 Enlarged view of section D;

[0026] Figure 7 yes Figure 5 Enlarged view of section E in the middle. Detailed Implementation

[0027] To make the objectives, advantages, and features of this utility model clearer and more detailed, the following non-limiting description of preferred embodiments will be illustrated and explained. These embodiments are merely typical examples of applying the technical solutions of this utility model; any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0028] It should also be stated that, in the description of the solution, the terms "center", "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" in this solution are used for descriptive purposes only and should not be construed as indicating or implying a ranking of importance, or implicitly specifying the number of technical features shown. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0030] This utility model discloses a foldable elevator car top guardrail structure, such as... Figure 1 , Figure 5 As shown, it includes at least a horizontal bar assembly 2 disposed on the front side of the elevator car top 1 and a first vertical bar assembly 3 and a second vertical bar assembly 4 disposed on the left and right sides of the elevator car top 1, thereby achieving protection in at least three directions and forming an entrance for maintenance personnel to pass through on the rear side of the elevator car top 1.

[0031] The horizontal railing assembly 2, the first vertical railing assembly 3, and the second vertical railing assembly 4 located on the elevator car top 1 each include two parallel support bases 5. The support bases 5 are fixed on the elevator car top 1 to provide stable support for the entire guardrail. In some embodiments, each support base 5 is fixed to a reserved position on the elevator car top 1 by high-strength bolts. In other embodiments, the support bases 5 can also be fixed to the elevator car top 1 by other existing fixing methods, which will not be elaborated here.

[0032] Each support base 5 is equipped with a folding rod 6 that can rotate and fold 90° relative to its front. A crossbeam connects the folding rods 6 on the two support bases 5. The crossbeam is fixed to the front side of the two folding rods 6. The front side refers to the side of the folding rod 6 that is closer to its rotation direction when folded. When the two folding rods 6 on the same set of guardrails rotate and fold at the same time, the crossbeam located between the two folding rods 6 also rotates and folds synchronously with the folding rods 6, thereby changing the overall height of the guardrail.

[0033] like Figure 2 , Figure 4 As shown, each folding rod 6 is connected to the support base 5 via a self-locking hinge 7. The self-locking hinge 7 includes a first hinge plate 701 and a second hinge plate 702. The first hinge plate 701 is fixed to the upper surface of the support base 5, and the second hinge plate 702 is fixed to the folding rod 6. The second hinge plate 702 can rotate relative to the first hinge plate 701. In the unfolded state, the first hinge plate 701 and the second hinge plate 702 are perpendicular. In the folded state, the second hinge plate 702 rotates towards the first hinge plate 701 and covers the top of the first hinge plate 701. The self-locking hinge 7 can be any type of hinge with a 90° bend in the prior art. Preferably, it is a self-locking hinge 7 with a self-locking function in the unfolded state, such as the self-locking hinge 7 structure disclosed in the utility models with authorization announcement numbers CN218881917U and CN216406484U, or other existing self-locking hinge 7 structures, which will not be described in detail here.

[0034] like Figure 6 As shown, a first contact switch 8 is provided on the front side of the support base 5. The first contact switch 8 can be linked with the elevator control system to monitor the time of the guardrail unfolding and folding, so as to prevent safety accidents caused by abnormal guardrail status. The position of the first contact switch 8 can be adjusted according to actual needs. It is necessary to ensure that the first contact switch 8 is triggered when each guardrail is in the folded state.

[0035] In a preferred embodiment, the support base is a cuboid support base, and the upper surface area of ​​the support base is greater than or equal to the sum of the lower surface areas of the folding rod 6 and the self-locking hinge 7. On the one hand, this ensures the stability of the connection between the support base and the elevator car, providing stable support for the entire guardrail. On the other hand, it also facilitates the folded guardrail to be supported by the support base 5, making it stable and stable.

[0036] The first vertical column assembly 3 is also hinged to a first connecting rod 10 on the top of the side away from the horizontal column assembly 2. The free end of the first connecting rod 10 is provided with a first mounting hole 14. The second vertical column assembly 4 is provided with a positioning member. The rotation axis of the first connecting rod 10 is perpendicular to the folding rod 6, and the positioning member is positioned opposite to the hinge of the first connecting rod 10. Thus, the connection between the free end of the first connecting rod 10 and the second vertical column assembly 4 is achieved by the positioning member cooperating with the first mounting hole 14.

[0037] like Figure 4 , Figure 5 , Figure 7 As shown, in the unfolded state, each folding rod 6 is perpendicular to its bottom support base, and the positioning member is fixed in the first mounting hole 14 of the first connecting rod 10, so that the first connecting rod 10 is connected between the first column assembly 3 and the second column assembly 4; in the folded state, the second hinge plate 702 drives the folding rod 6 to rotate forward 90° and fold, so that the folding rod 6 is parallel to its bottom support base 5, and the first contact switch 8 is triggered.

[0038] like Figure 2 As shown, in some embodiments, a second contact switch 9 is also provided on one side of the support base 5, and an L-shaped touch piece 18 is also provided on the same side of the folding rod 6 as the second contact switch 9. The touch piece 18 includes a fixing part fixed to the side of the folding rod 6. The bottom of the fixing part is vertically bent to form a touch part for triggering the second contact switch 9. In the unfolded state, the touch part of the touch piece 18 is located directly above the second contact switch 9 and presses the second contact switch 9. In the folded state, the touch piece 18 rotates with the folding rod 6 and moves away from the second contact switch 9. In some embodiments, both the first contact switch 8 and the second contact switch 9 can be connected to the elevator Internet of Things (IoT) system to remotely monitor the status of the guardrail, thereby ensuring the safety of elevator operation. The working method of the elevator IoT system can refer to the existing technology, which will not be described in detail here.

[0039] like Figure 5 , Figure 7As shown, in one embodiment, the first connecting rod 10 is hinged to the top of a folding rod 6 of the first vertical column assembly 3 away from the horizontal column assembly 2. The positioning element is a first wing bolt 11, which is disposed on the top of a folding rod 6 of the second vertical column assembly 4 away from the horizontal column assembly 2. By rotating the first wing bolt 11, the first wing bolt 11 can be locked and unlocked from the first mounting hole 14. In the folded state, the first connecting rod 10 is locked to the first wing bolt 11, and in the unfolded state, the first connecting rod 10 is unlocked from the first wing bolt 11, facilitating maintenance. For maintenance personnel to enter and exit; specifically, the first mounting hole 14 is preferably a strip-shaped hole or an oblong hole. When the first connecting rod 10 needs to be connected to the second longitudinal component 4, the butterfly wing of the first butterfly bolt 11 is rotated to loosen the first butterfly bolt 11 and ensure that the butterfly wing passes through the first mounting hole 14. Then, the butterfly wing is rotated to tighten the first butterfly bolt 11 and lock the free end of the first connecting rod 10 to the second longitudinal component 4. When unlocking is required, the butterfly wing is rotated again to loosen the first butterfly bolt 11 and rotate the butterfly wing to pass through the first mounting hole 14. At this time, the free end of the first connecting rod 10 is released from the second longitudinal component 4.

[0040] like Figure 1 , Figure 3 As shown, in a preferred embodiment, the two sides of the crossbeam of the horizontal bar assembly 2 are respectively hinged with second connecting rods 12. The free ends of the second connecting rods 12 are provided with second mounting holes 15. The first vertical bar assembly 3 and the second vertical bar assembly 4 are each provided with a second butterfly bolt 13 on the folding rod 6 on the side near the horizontal bar assembly 2. The locking and unlocking methods of the two second connecting rods 12 and the second butterfly bolts 13 on the first vertical bar assembly 3 and the second vertical bar assembly 4 can refer to the connection method of the first connecting rod 10 and the first butterfly bolt 11 described above, and will not be repeated here. In the folded state, the second connecting rod 12 and the second butterfly bolt 13 are unlocked to avoid the second connecting rod 12 interfering with the folding of the guardrail. In the unfolded state, the second connecting rod 12 and the second butterfly bolt 13 are locked, thereby ensuring the stability of the connection between the horizontal bar assembly 2 and the first vertical bar assembly 3 and the second vertical bar assembly 4, as well as the safety of the protection.

[0041] like Figure 1 , Figure 2 , Figure 4 As shown, in one embodiment, the crossbeam includes a first crossbeam 16 and a second crossbeam 17 arranged in parallel. The first crossbeam 16 is located at the top of the folding bar, and the distance between the second crossbeam 17 and the upper surface of the support base is equal to the distance between the first contact switch 8 and the folding rod 6, thereby ensuring that in the folded state, the second crossbeam 17 can press to trigger the first contact switch 8.

[0042] like Figure 4 , Figure 6 As shown, in one embodiment, a limiting seat 19 is also provided on one side of the folding rod 6. The limiting seat 19 includes a fixing part fixed to one side of the folding rod 6. The fixing part extends toward the front end of the folding rod 6 and forms an L-shaped limiting part. One end of the limiting part is connected to the fixing part, and the other end is bent vertically and parallel to the folding rod 6. The connection between the limiting part and the fixing part is located at the bottom of the second crossbeam 17.

[0043] like Figure 1 , Figure 5 As shown, in some embodiments, two or more sets of first vertical rail components 3 and second vertical rail components 4 are provided on both sides of the horizontal rail component 2 at intervals. By adjusting the number of first vertical rail components 3 and second vertical rail components 4, different sizes of elevators can be accommodated.

[0044] like Figure 1 As shown, in one embodiment, the bottom of the two support seats of the horizontal bar component 2, the first vertical bar component 3 and the second vertical bar component 4 are respectively connected to the enclosure plate 20, which further intercepts and protects the bottom of each guardrail.

[0045] This utility model also discloses an elevator, including the foldable elevator car top guardrail structure described above.

[0046] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A foldable elevator roof guardrail structure comprising at least a horizontal rail assembly arranged at a front side of an elevator roof, and a first vertical rail assembly and a second vertical rail assembly arranged at left and right sides of the elevator roof, respectively, characterized in that: The transverse column assembly, the first longitudinal column assembly and the second longitudinal column assembly each comprise two parallel support bases, each of which is provided with a folding rod that can be folded by 90 degrees relative to the front thereof, and a cross beam is connected between the folding rods of the two support bases, the cross beam being fixed to the front side of the folding rods, each folding rod being connected to the support base through a self-locking hinge, the self-locking hinge comprising a first hinge plate and a second hinge plate, the first hinge plate being fixed to the upper surface of the support base, and the second hinge plate being fixed to the folding rod, a first touch switch being arranged on the front side of the support base, a first connecting rod being hingedly connected to the top of a folding rod of the first longitudinal column assembly away from the transverse column assembly, a first mounting hole being arranged on the free end of the first connecting rod, a positioning member being arranged on the second longitudinal column assembly, the positioning member being arranged opposite to the hinge connection of the first connecting rod; in the unfolded state, each folding rod is perpendicular to the support base at the bottom thereof, the positioning member is fixed in the first mounting hole of the first connecting rod, and the first connecting rod is connected between the first longitudinal column assembly and the second longitudinal column assembly; in the folded state, the second hinge plate drives the folding rod to be folded by 90 degrees forward, so that the folding rod is parallel to the support base at the bottom thereof, and the first touch switch is triggered.

2. The foldable elevator overhead guard structure of claim 1, wherein: A second touch switch is further arranged on one side of the support base, and an L-shaped touch piece is further arranged on the same side of the folding rod as the second touch switch, the touch piece comprising a fixed part fixed to the side of the folding rod, and the bottom of the fixed part being vertically bent to form a touch part for triggering the second touch switch; in the unfolded state, the touch part of the touch piece is located directly above the second touch switch and presses the second touch switch.

3. The foldable elevator overhead guard structure of claim 2, wherein: The first connecting rod is hingedly connected to the top of a folding rod of the first longitudinal column assembly away from the transverse column assembly, and the positioning member is a first butterfly bolt arranged on the top of a folding rod of the second longitudinal column assembly away from the transverse column assembly.

4. The foldable elevator overhead guard structure of claim 3, wherein: Second connecting rods are hingedly connected to the two sides of the cross beam of the transverse column assembly, second mounting holes are arranged on the free ends of the second connecting rods, and second butterfly bolts are arranged on the folding rods of the first longitudinal column assembly and the second longitudinal column assembly close to the transverse column assembly.

5. The foldable elevator overhead guard structure of claim 1, wherein: The cross beam comprises a first cross beam and a second cross beam arranged in parallel, the first cross beam being located at the top of the folding rod, and the distance between the second cross beam and the upper surface of the support base being equal to the distance between the first touch switch and the folding rod.

6. The foldable elevator overhead guard structure of claim 5, wherein: A limiting seat is further arranged on one side of the folding rod, the limiting seat comprising a fixed part fixed to one side of the folding rod, the fixed part extending towards the front end of the folding rod and forming an L-shaped limiting part, one end of the limiting part being connected to the fixed part, and the other end being vertically bent and parallel to the folding rod, and the connection between the limiting part and the fixed part being located at the bottom of the second cross beam.

7. The foldable elevator overhead guard structure of claim 1, wherein: Two or more groups of first longitudinal column assemblies and second longitudinal column assemblies are arranged at intervals on the two sides of the transverse column assembly.

8. The foldable elevator overhead guard structure of claim 1, wherein: The bottoms of the two support bases of the transverse column assembly, the first longitudinal column assembly and the second longitudinal column assembly are respectively connected with a surrounding plate.

9. Elevator, characterized in that A foldable elevator roof guardrail structure as claimed in any one of claims 1-8.

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