Foldable protective fence for elevator maintenance
The elevator safety railing, designed with a telescopic linkage mechanism and omnidirectional wheels, solves the problems of large size and instability of traditional safety railings, achieving convenient folding and stable support, thus improving the safety and protection effect of elevator maintenance.
Patent Information
- Application Number
- CN202423062335.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Traditional elevator maintenance guardrails have problems in terms of size control, stability and comprehensive protection. They take up a lot of space, are unstable and cannot effectively block small animals, increasing safety risks.
The design incorporates a telescopic linkage mechanism, combined with casters and foldable feet, to achieve convenient folding and stable support for the guardrail. The combination of uprights, linkages, and casters ensures the convenience and stability of the guardrail in both storage and use.
The guardrail can be significantly reduced in size when not in use, making it easier to store and transport, while remaining stable when in use, thus improving safety and protection.
Smart Images
Figure CN223510650U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the maintenance field of compartment type elevator especially relates to a foldable protective fence for elevator maintenance. BACKGROUND
[0002] In the elevator maintenance operation, safety protection measures are the important link to ensure the safety of maintenance personnel and the surrounding environment. Traditionally, in order to isolate the elevator shaft, prevent personnel from entering or falling, the protective fence composed of two foldable plates is generally used. This kind of protective fence is placed in front of the elevator to be maintained by unfolding to form a certain angle, so as to play the role of warning and blocking.
[0003] With the increasing demand for elevator maintenance and the continuous improvement of safety standards, the traditional protective fence gradually exposes a series of problems in design and actual application. Due to the limitation of structural design, the traditional protective fence still occupies a large space even in the folded state, which undoubtedly increases the difficulty and cost of management and transportation for the elevator maintenance team with limited storage space. In the actual application process, the traditional protective fence only relies on its own weight and simple unfolding mechanism to maintain stability, and when encountering strong wind or slight human collision, it is easy to fall, thereby losing the protection effect and increasing the risk of safety accidents. At the same time, the height and structural design of the traditional protective fence are often insufficient to effectively prevent small animals such as cats and dogs from crossing, which not only may interfere with the maintenance work, but also may cause accidental injury events of animals, further reducing the safety of the maintenance site.
[0004] Therefore, it is an urgent technical problem for the technical personnel in the field to develop a new type of protective fence for elevator maintenance which can effectively reduce the volume, improve the stability and enhance the protection effect. CONTENT OF THE UTILITY MODEL
[0005] In view of the problems in the background art, the utility model provides a foldable protective fence for elevator maintenance to solve the problems of the traditional elevator maintenance protective fence in volume control, stability and comprehensive protection in the prior art. The device comprises two vertical rods, the vertical rods are vertically provided with notches around, a telescopic connecting rod mechanism is arranged between the vertical rods, the connecting rod mechanism comprises a plurality of cross-connected metal rod members, forming a rhombus or similar polygonal structure, the two ends of the connecting rod mechanism are clamped in the notches, the middle part of the vertical rod is provided with a fixed ring, the fixed ring is used for limiting the connection between the upper part of the connecting rod mechanism and the vertical rod, and the maximum opening width of the connecting rod mechanism is controlled.
[0006] Further, a foot wheel mounting rod is vertically arranged in the middle of the connecting rod mechanism, a long hole is formed above the foot wheel mounting rod, a circular hole is formed below the foot wheel mounting rod, the long hole is connected with the circular hole and the cross connection of the metal rod in the connecting rod mechanism, the long hole can move up and down at the cross connection of the metal rod in the connecting rod mechanism, and a universal wheel is arranged below the foot wheel mounting rod.
[0007] Further, a horizontal rod is rotatably arranged above one side of the vertical rod, a convex column is arranged above the other side of the vertical rod, a hook is arranged at the other end of the horizontal rod, and the hook can hook the convex column.
[0008] Preferably, the horizontal rod is a telescopic rod.
[0009] Further, a foot is arranged at the lower end of the vertical rod, the foot comprises two foldable foot blocks, and the foot blocks are folded down to support when the device is used.
[0010] Preferably, the vertical rod is made of circular aluminum material and is light in weight.
[0011] The utility model discloses the advantages and beneficial effects are as follows: the utility model discloses a telescopic connecting rod mechanism design, so that the guardrail can be conveniently folded when not needing to use, greatly reduces the space occupied, and is convenient for storage and transportation. The foot wheel mounting rod and the universal wheel thereon are designed, so that the guardrail can be easily pushed on the ground in the contracted state, greatly improving the convenience of movement. In the unfolded state, the universal wheel moves upward under the action of the foot wheel mounting rod, ensuring the stability of the guardrail, and avoiding the security risks caused by accidental movement. The foot design at the lower end of the vertical rod, especially the two foldable foot blocks, can be folded down to support when the guardrail is used, ensuring the stability and reliability of the entire guardrail. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.
[0013] Figure 1 It is the unfolded schematic view of the utility model.
[0014] Figure 2 It is the contracted schematic view of the utility model.
[0015] Among them, 1-upright pole, 11-slot, 12-fixing ring, 13-protruding column, 14-base foot, 141-foot block, 2-linkage mechanism, 3-caster mounting rod, 31-elongated hole, 32-round hole, 33-swivel wheel, 4-crossbar, 41-hook. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.
[0017] like Figure 1 and Figure 2 As shown, the device includes a pole 1, a linkage mechanism 2, and a caster mounting rod 3.
[0018] The guardrail consists of two uprights 1, one on the left and one on the right. The uprights 1 are made of round aluminum to reduce overall weight while maintaining sufficient strength. Grooves 11 are vertically formed around each upright 1 for connection and fixation with the linkage mechanism 2. A retaining ring 12 is located in the middle of the upright 1, which limits the maximum opening and closing width at the connection point between the linkage mechanism 2 and the upright 1, ensuring the stability of the guardrail during use. A crossbar 4 is rotatably mounted above one upright 1; the crossbar 4 is preferably telescopic to accommodate different height requirements. A protruding post 13 is fixedly mounted above the other upright 1, engaging with a hook 41 at the end of the crossbar 4 to further secure and close the guardrail.
[0019] The linkage mechanism 2 consists of multiple intersecting metal rods, forming a stable rhomboid or polygonal structure that is both aesthetically pleasing and robust. Both ends of the linkage mechanism 2 are respectively engaged in the slots 11 of the upright post 1. Through the cooperation between the slots and the linkage mechanism, the retractable function of the guardrail is achieved.
[0020] A caster mounting rod 3 is vertically installed in the middle of the linkage mechanism 2. The caster mounting rod 3 has an elongated hole 31 at the top and a round hole 32 at the bottom. The elongated hole 31 and the round hole 32 are respectively connected to the intersection of metal rods in the linkage mechanism 2, allowing the caster mounting rod 3 to move up and down as the linkage mechanism 2 extends and retracts. A caster wheel 33 is installed below the caster mounting rod 3. When the guardrail is retracted, the caster wheel 33 touches the ground, making it easy for workers to push the guardrail on the ground; when the guardrail is extended, the caster wheel 33 moves upward under the action of the caster mounting rod 3, ensuring the guardrail remains stable.
[0021] The lower end of the upright post 1 is provided with a base 14, which includes two foldable foot blocks 141. When the guardrail is in use, the foot blocks 141 are folded down to make them contact the ground, providing stable support for the guardrail.
[0022] Specific usage steps:
[0023] In this embodiment, the guardrail is first unfolded. By adjusting the extension length of the linkage mechanism 2, the guardrail reaches the required width. The fixing ring 12 is used to limit the linkage mechanism 2, ensuring the stability of the guardrail. Then, the crossbar 4 is rotated to a horizontal position, and its length is adjusted so that the hook 41 hooks the protruding post 13 on the other side, thereby closing and further securing the guardrail. Next, the foot blocks 141 of the base 14 are flipped down to ensure that the guardrail is stably supported on the ground. At this time, the casters 33 move upward under the action of the caster mounting rod 3, keeping the guardrail in a fixed state and preventing movement. After the maintenance work is completed, the guardrail is folded in reverse order, and the casters 33 are used to push it on the ground to the storage position, achieving convenient storage and movement of the guardrail.
[0024] The above provides a detailed description of a foldable safety railing for elevator maintenance provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A foldable safety railing for elevator maintenance, comprising two uprights (1) on the left and right, characterized in that, The uprights (1) are vertically provided with slots (11) on all four sides. A telescopic linkage mechanism (2) is provided between the uprights (1). The linkage mechanism (2) consists of multiple intersecting metal rods forming a rhomboid or polygonal structure. The two ends of the linkage mechanism (2) are engaged in the slots (11). A fixing ring (12) is provided in the middle of the uprights (1). The fixing ring (12) is used to connect the upper part of the linkage mechanism (2) to the uprights (1). The linkage mechanism (2) is vertically provided with a caster mounting rod (3) at the middle. The caster mounting rod (3) has an elongated hole (31) at the top and a round hole (32) at the bottom. The elongated hole (31) and the round hole (32) are connected to the intersection of the metal rods in the linkage mechanism (2). The elongated hole (31) can move up and down at the intersection of the metal rods in the linkage mechanism (2). A caster wheel (33) is provided below the caster mounting rod (3).
2. The foldable protective railing for elevator maintenance according to claim 1, characterized in that, A horizontal bar (4) is rotatably arranged above the upright (1) on one side, and a protruding post (13) is arranged above the upright (1) on the other side. A hook (41) is arranged at the other end of the horizontal bar (4), and the hook (41) can hook the protruding post (13).
3. The foldable protective railing for elevator maintenance according to claim 2, characterized in that, The lower end of the pole (1) is provided with a foot (14), which includes two foldable foot blocks (141).
4. A foldable protective railing for elevator maintenance according to claim 3, characterized in that, The crossbar (4) is a telescopic bar.
5. A foldable safety railing for elevator maintenance according to any one of claims 1 to 4, characterized in that, The upright (1) is made of round aluminum.