Safety fence for live-line test

Abstract

The utility model relates to the field of electric appliance tests, and particularly discloses a safety fence for a live test, which comprises a first linkage plate, a second linkage plate and a center pin, the center pin is symmetrically sleeved with a first linkage plate and a second linkage plate. The two T-shaped frames are pushed to be close to each other, so that the symmetrical sliding blocks slide and move in the symmetrical sliding grooves, the first linkage plate and the second linkage plate move relatively to contract until the symmetrical sliding blocks cannot move in the symmetrical sliding grooves, the storage action is completed, and a fence small in length is formed; the movement and the transportation are convenient; when the guardrail needs to be unfolded, the two T-shaped frames are far away from each other, the symmetrical sliding blocks slide and move in the symmetrical sliding grooves, and the first linkage plate and the second linkage plate move relatively to be unfolded and extended, so that the distance of the guardrail is adjusted in a stepless manner; the problems that an existing safety fence is large in size, heavy in weight and inconvenient to carry, move and change the distance for structural strength manufacturing are solved.

Description

Technical Field

[0001] This utility model relates to the field of electrical testing, specifically a safety fence for live testing. Background Technology

[0002] Before mass production, live electrical equipment needs to undergo extensive electrical testing to verify the safety and electrical performance of the design. Therefore, live electrical equipment is dangerous during the verification phase, and a high degree of safety must be paid attention to during live testing.

[0003] Chinese invention patent CN101255775A, published on September 3, 2008, discloses a safety protection facility used around power facilities and during the installation, inspection, and maintenance of power facilities. Specifically, it is a safety fence and its base. The safety fence includes posts and fence body; every two posts and the fence body connecting them form a fence unit. Furthermore, the safety fence includes multiple fence bases, each with two insertion holes arranged side-by-side. Fence units and fence bases are spaced apart; that is, a fence base is placed between two adjacent fence units, and the adjacent posts of these two adjacent fence units are inserted into the two insertion holes of the same fence base. Several fence units and fence bases are connected end-to-end in this manner to form a protective strip with a certain extension length. This invention has a simple structure, is easy to install, disassemble, and transport, and has good insulation and protective performance.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: In order to provide high-strength safety protection by restricting displacement, the existing safety fences have high structural strength, large weight and cannot be folded, which makes them unsuitable for occasions where the equipment to be tested is frequently moved to avoid it. Moreover, moving them can easily cause scratches on the ground, making them unsuitable for test occasions where the fences need to be moved frequently. Utility Model Content

[0005] The purpose of this utility model is to solve the technical problems of existing safety fences, which, in order to provide high-strength safety protection by restricting displacement, have high structural strength, are heavy and cannot be folded, making them unsuitable for occasions where frequent movement is required to avoid the equipment being tested, and are prone to scratching the ground when moved. Therefore, this utility model provides a safety fence for live-line testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution;

[0007] The present invention discloses a safety fence for live testing, comprising a first linkage plate, a second linkage plate, and a center pin; the first linkage plate and the second linkage plate are symmetrically sleeved on the center pin; the first linkage plate and the second linkage plate; a limiting pin is movably inserted into the end of the second linkage plate; the limiting pin is inserted into a symmetrical receiving groove; the symmetrical receiving groove is symmetrically opened on the side of a T-shaped frame; a symmetrical slider is movably inserted into the end of the first linkage plate; the symmetrical slider is slidably inserted into a symmetrical sliding groove; the symmetrical sliding groove is opened at the upper end of the T-shaped frame; the symmetrical sliding groove connects to the symmetrical receiving groove.

[0008] Furthermore, the two ends of the T-shaped frame are symmetrically fitted with anti-electric shock protective sleeves.

[0009] Furthermore, rollers are symmetrically fixed to the sides of the T-shaped frame.

[0010] Furthermore, handles are symmetrically fixed to both sides of the T-shaped frame.

[0011] Furthermore, both the first and second linkage plates are made of wood.

[0012] The safety fence for live testing provided by this utility model has the following beneficial effects:

[0013] 1. This utility model pushes two T-shaped frames closer together, causing symmetrical sliders to slide within symmetrical grooves. This causes relative movement between the first and second linkage plates, resulting in a retraction until the symmetrical sliders can no longer move within the grooves, thus completing the storage action and forming a short fence that is easy to move and transport. When it needs to be unfolded, the two T-shaped frames are moved away from each other, and the symmetrical sliders slide within the symmetrical grooves. Relative movement between the first and second linkage plates causes the fence to unfold and extend, achieving stepless adjustment of the fence distance. Furthermore, the double-layered first and second linkage plates provide double-layer protection after unfolding, solving the problem that existing safety fences are large and heavy due to structural strength requirements, making them inconvenient to move and change distance.

[0014] 2. This utility model uses plastic anti-electric protective sleeves attached to both ends of the T-shaped frame, so that the T-shaped frame does not directly contact the ground, thus preventing contact with the ground when it is electrified. Even if the ground is electrified, this safety fence is in an insulated state, thus making it safer. By holding the T-shaped frame and pulling it, the rollers of the T-shaped frame will roll and rub against the ground after tilting, so that the device can be moved with effortless rolling friction, making it suitable for occasions where the safety fence needs to be moved frequently. Attached Figure Description

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings;

[0016] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0017] Figure 2 This is a partial isometric structural schematic diagram of the present invention;

[0018] Figure 3 This is a front view structural diagram of the present invention.

[0019] The following are the labels in the diagram: 1. T-shaped frame; 2. Symmetrical receiving groove; 3. Symmetrical slide; 4. Symmetrical slider; 5. First linkage plate; 6. Limit pin; 7. Second linkage plate; 8. Center pin; 9. Anti-electric protection sleeve; 10. Roller; 11. Handle. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0023] Please see Figure 1-3As shown, a safety fence for live-line testing includes a first linkage plate 5, a second linkage plate 7, and a center pin 8. The first linkage plate 5 and the second linkage plate 7 are symmetrically sleeved on the center pin 8. The first linkage plate 5 and the second linkage plate 7 are movably connected to the end of the second linkage plate 7. The limit pin 6 is inserted into a symmetrical receiving groove 2. The symmetrical receiving groove 2 is symmetrically located on the side of a T-shaped frame 1. A symmetrical slider 4 is movably inserted into the end of the first linkage plate 5. The symmetrical slider 4 is slidably inserted into a symmetrical sliding groove 3. The symmetrical sliding groove 3 is located at the upper end of the T-shaped frame 1 and connects to the symmetrical receiving groove 2. During operation, by pushing the two T-shaped frames 1 closer together, the symmetrical slider 4... The symmetrical slider 4 slides within the symmetrical groove 3, causing relative movement between the first linkage plate 5 and the second linkage plate 7, resulting in a retraction until the symmetrical slider 4 can no longer move within the symmetrical groove 3, thus completing the storage action and forming a short fence, which is convenient for movement and transportation. When it needs to be unfolded, the two T-shaped frames 1 are moved away from each other, and the symmetrical slider 4 slides within the symmetrical groove 3, causing relative movement between the first linkage plate 5 and the second linkage plate 7 to unfold and extend, realizing stepless adjustment of the fence distance. Furthermore, the double-layered first linkage plate 5 and second linkage plate 7 provide double-layer protection after unfolding, solving the problem that existing safety fences are large and heavy due to structural strength requirements, making them inconvenient to transport, move, and change distance.

[0024] The two ends of the T-shaped frame 1 are symmetrically fitted with anti-electric protection sleeves 9. During operation, the anti-electric protection sleeves 9, made of plastic, are fitted onto the two ends of the T-shaped frame 1, so that the T-shaped frame 1 does not directly contact the ground, thus preventing it from making live contact with the ground. Even if the ground is live, this safety fence is in an insulated state, thus making it safer.

[0025] The T-shaped frame 1 is symmetrically fixed with rollers 10 on its side. During operation, the T-shaped frame 1 is pulled and moved by gripping it, so that the rollers 10 roll and rub against the ground after the T-shaped frame 1 is tilted. This allows the device to be moved with effortless rolling friction, making it suitable for use in situations where safety fences need to be moved frequently.

[0026] Handles 11 are symmetrically fixed to both sides of the T-shaped frame 1. During operation, the T-shaped frame 1 is pulled by holding the handles 11, which causes the T-shaped frame 1 to tilt and the rollers 10 to roll and rub against the ground. This allows the safety fence to be moved by rolling friction after being folded, making it easy to move, transport and change position. This makes it more convenient to use and solves the problem that existing high-strength fences are inconvenient to move.

[0027] The first linkage plate 5 and the second linkage plate 7 are made of wood. When in operation, the first linkage plate 5 and the second linkage plate 7, made of wood, are lightweight and non-conductive while having a certain structural strength. This makes them safer to use as a fence and solves the problem that existing safety fences use metal for structural strength, which is not suitable for use in test sites with live electrical equipment.

[0028] Using the above scheme, in use, by pushing the two T-shaped frames 1 closer together, the symmetrical slider 4 slides within the symmetrical groove 3, causing relative movement between the first linkage plate 5 and the second linkage plate 7, resulting in retraction until the symmetrical slider 4 can no longer move within the symmetrical groove 3, thus completing the storage action and forming a short fence, which is convenient for movement and transportation. When it needs to be unfolded, the two T-shaped frames 1 are moved away from each other, the symmetrical slider 4 slides within the symmetrical groove 3, and relative movement between the first linkage plate 5 and the second linkage plate 7 extends the fence, achieving stepless adjustment of the fence distance. Furthermore, the double-layered first linkage plate 5 and second linkage plate 7 provide double-layer protection after unfolding, solving the problem of existing safety fences being large and heavy due to structural strength requirements, making them inconvenient to move and change distance. The plastic anti-electric protective sleeve 9 is fitted onto both ends of the T-shaped frame 1, preventing the T-shaped frame 1 from directly contacting the ground and thus avoiding electric shock. Even if the ground is electrified, this safety fence remains insulated, thus enhancing safety. By pulling the T-shaped frame 1, the rollers 10 roll and rub against the ground after the T-shaped frame 1 tilts, allowing for effortless movement and making it suitable for situations requiring frequent fence relocation. Pulling the T-shaped frame 1 by holding the handle 11 tilts the T-shaped frame 1, causing the rollers 10 to roll and rub against the ground, allowing the safety fence to be moved by rolling friction after folding, facilitating relocation and making it more convenient to use. This solves the problem of existing high-strength fences being inconvenient to move. The first and second linkage plates 5 and 7, made of wooden boards, maintain structural strength while remaining lightweight and non-conductive, making it safer as a fence and addressing the issue of existing safety fences using metal for structural strength being unsuitable for testing sites with live electrical equipment.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A live test trial safety fence characterised in that; It includes first linkage plate (5), second linkage plate (7) and center pin (8), the first linkage plate (5) and second linkage plate (7) are symmetrically sleeved on the center pin (8), the first linkage plate (5) and second linkage plate (7), the end of the second linkage plate (7) movably inserts a limiting pin (6), the limiting pin (6) is inserted in the symmetric accommodating groove (2), the symmetric accommodating groove (2) is symmetrically opened in the side of T-shaped frame (1), the end of the first linkage plate (5) movably inserts a symmetric slider (4), the symmetric slider (4) is slidably inserted in the symmetric sliding groove (3), the symmetric sliding groove (3) is opened on the upper end of T-shaped frame (1), and the symmetric sliding groove (3) is communicated with the symmetric accommodating groove (2).

2. The live test trial safety fence according to claim 1, characterised in that: The both ends of the T-shaped frame (1) are symmetrically sleeved with anti-electricity protective sleeve (9).

3. The live test trial safety fence according to claim 2, characterised in that: The side of the T-shaped frame (1) is symmetrically fixed with a roller (10).

4. The live test trial safety fence according to claim 3, characterised in that: The both sides of the T-shaped frame (1) are symmetrically fixed with a handle (11).

5. The live test trial safety fence according to claim 4, characterised in that: The first linkage plate (5) and second linkage plate (7) are made of wood board.

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