Electrode fixing assembly for arc protection face screen test device

Abstract

The utility model belongs to the technical field of electric arc protection test equipment, and provides an electrode fixing assembly for an electric arc protection face screen test device, which comprises a pipe main body provided with an insertion through hole matched with an electrode, the insertion through hole and the pipe main body are coaxially arranged, and a flange part is arranged at the top of the pipe main body. The bottom of the pipe body is provided with a notch communicated with the inserting and embedding through hole, side plate arms and a pressing handle, the side plate arms and the pressing handle are located at the notch, the two side plate arms are symmetrically arranged on the two sides of the axis of the pipe body in parallel, and the pressing handle is rotatably arranged between the two side plate arms. And the electrode inserted in the inserting and embedding through hole is pressed or released by rotating the pressing handle. The electrode fixing assembly for the arc protection face screen test device is simple in structure and convenient to use, reduces the replacement difficulty of the electrode in the arc protection test process, and improves the convenience of electrode position adjustment and fixing operation, thereby improving the test efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of arc protection testing equipment, and specifically relates to an electrode fixing component for an arc protection shield testing device. Background Technology

[0002] Personal arc flash protection equipment refers to protective gear used to protect the human body from potential exposure to arc-related thermal hazards. Specifically, it includes arc flash protective clothing, arc flash protective face shields, arc flash protective headgear, arc flash protective gloves, and arc flash protective shoe covers. According to the relevant provisions in the industry standard DL / T320-2019 "General Technical Requirements for Personal Arc Flash Protective Equipment," there are corresponding requirements for the arc flash protection performance of personal arc flash protective equipment, requiring testing of the arc flash protection performance of the fabric and the face shield according to appropriate test methods. Existing arc protection testing devices, such as patent CN115656265B, provide an integrated arc protection testing system for arc-resistant fabrics and its control method. This system includes an arc generation and sample placement module comprising a power connection pipe A1, a power connection pipe B2, a mounting plate A3, an electrode sleeve A4, an electrode A5, an electrode B6, an electrode sleeve B7, a mounting plate B8, a sample fixing panel 9, a sample fixing panel telescopic device 10, a panel calorimeter 11, a monitoring calorimeter 12, a monitoring calorimeter telescopic device 13, an insulator A14, a base A15, an insulator B16, a base B17, a conductive steel pipe 18, an insulating board base 19, and a fixed insulating board 20. However, the electrodes are fixed in the electrode sleeves with clamps. Since the position and distance of the electrodes need to be readjusted after each test, the testing personnel need to repeatedly open or tighten the clamps using special tools. This operation is difficult and time-consuming, making electrode replacement and adjustment cumbersome and difficult to operate, severely impacting testing efficiency.

[0003] Therefore, it is necessary to design an electrode fixing component for an arc-proof shield test device that can at least solve some of the above problems and defects. Summary of the Invention

[0004] To solve the above technical problems, this utility model proposes an electrode fixing component for an arc protection shield test device. It has a simple structure and is easy to use, which reduces the difficulty of electrode replacement during arc protection testing, improves the convenience of electrode position adjustment and fixing operations, and thus improves test efficiency.

[0005] The technical solution of this utility model is:

[0006] This utility model proposes an electrode fixing assembly for an anti-arc shield testing device, including a tube body with an insertion through hole adapted to the electrode. The insertion through hole is coaxially arranged with the tube body. A flange is provided at the top of the tube body. A notch communicating with the insertion through hole is provided at the bottom of the tube body, and a side plate arm and a clamping handle are located at the notch. Two side plate arms are provided and are arranged in parallel and symmetrically on both sides of the tube body axis. The clamping handle is rotatably arranged between the two side plate arms so that the electrode inserted in the insertion through hole can be clamped or released by rotating the clamping handle.

[0007] Preferably, the clamping handle includes a fixedly connected eccentric end and a rotating handle. The rotation center axis of the eccentric end is perpendicular to the axis of the tube body. The maximum distance between the eccentric end and the axis of the tube body is greater than the radius of the electrode, and the minimum distance between the eccentric end and the axis of the tube body is less than the radius of the electrode.

[0008] Preferably, a transversely penetrating central shaft hole is provided at the rotation center axis position of the eccentric end, and a central horizontal shaft perpendicularly connected to the two side plate arms is provided between them. The central shaft hole is adapted to the central horizontal shaft, and the eccentric end is rotatably sleeved on the outer periphery of the central horizontal shaft.

[0009] Preferably, the side plate arm is provided with a transverse through-hole for support, and both ends of the central horizontal shaft pass through the through-hole and extend outward. Locking nuts are provided at both ends of the central horizontal shaft for threaded connection.

[0010] Preferably, the supporting through hole is a circular hole adapted to the central transverse axis;

[0011] Alternatively, the supporting through hole is a horizontally arranged slot, and the length of the slot is greater than the diameter of the central horizontal axis.

[0012] Preferably, the side plate arm is further provided with a top screw hole communicating with the support through hole and a rotatable top bolt disposed in the top screw hole. The top bolt is threadedly engaged with the top screw hole, and the end of the top bolt abuts against the central horizontal axis.

[0013] Preferably, the pipe body is further provided with an elastic placement clip fixedly connected thereto. The elastic placement clip is arranged near the flange portion. The elastic placement clip is a "U"-shaped elastic clip with a narrowed opening, and the width of the opening of the elastic placement clip is smaller than the width of the rotating handle.

[0014] This utility model has the following advantages and effects compared with the prior art:

[0015] (1) A rotatable clamping handle is used between the two side plate arms. The tester can clamp and release the electrode by rotating the clamping handle. The electrode can be replaced and adjusted without the need for special tools, which reduces the difficulty of operation, reduces the time required for electrode replacement and adjustment, and improves the test efficiency.

[0016] (2) A clamping handle including an eccentric end and a rotating handle is adopted. The eccentric end has an eccentric structure in which the distance between its outer contour and its rotation center axis gradually changes. The distance between the eccentric end and the electrode inserted in the insertion through hole is changed by rotating the eccentric end through the rotating handle. When the eccentric end abuts against the electrode, the electrode can be clamped and fixed. When the eccentric end is out of contact with the electrode, the electrode can be released to facilitate the replacement and adjustment of the electrode.

[0017] (3) A side plate arm with a support through hole is adopted. The support through hole is a horizontally arranged slot and the length of the slot is greater than the diameter of the central horizontal axis, so as to adjust the position of the central horizontal axis passing through the support through hole, thereby changing the distance between the rotation center axis of the eccentric end and the axis of the tube body, thereby changing the clamping and fixing state of the electrode and improving the stability and reliability of the electrode fixing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the electrode fixing assembly for the arc-proof shield test device in Embodiment 1 of this utility model;

[0019] Figure 2 This is a schematic diagram of the main body of the tube in the electrode fixing assembly of the anti-arc screen test device in Embodiment 1 of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the electrode fixing assembly for the arc-proof shield test device in Embodiment 1 of this utility model;

[0021] Figure 4 This is a schematic diagram showing the usage state of the electrode fixing assembly for the arc-proof shield test device in Embodiment 1 of this utility model;

[0022] Figure 5 This is a schematic diagram of the electrode fixing assembly for the arc-proof shield test device in Embodiment 2 of this utility model. For clarity, the locking nut is omitted in the figure.

[0023] Figure 6 This is a schematic diagram of the electrode fixing assembly for the anti-arc surface screen test device in Embodiment 3 of this utility model.

[0024] Reference numerals: 1. Tube body; 11. Insertion through hole; 12. Flange; 13. Notch; 2. Side plate arm; 21. Support through hole; 22. Insertion screw hole; 23. Insertion bolt; 3. Clamping handle; 31. Eccentric end; 311. Central shaft hole; 32. Rotating handle; 4. Central horizontal shaft; 41. Locking nut; 5. Elastic placement clamp; 6. Electrode; 7. Arc protection test device. Detailed Implementation

[0025] To enable those skilled in the art to better understand this utility model, it will now be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this utility model.

[0026] Example 1:

[0027] like Figures 1-4 As shown, this utility model provides an electrode fixing assembly for an arc protection face shield test device, specifically including a tube body 1 in the shape of a sleeve structure. The tube body 1 is provided with an insertion through hole 11 adapted to the electrode 6. The insertion through hole 11 is coaxially arranged with the tube body 1, and the electrode 6 is movably inserted into the insertion through hole 11. The electrode 6 is specifically columnar in structure. A flange 12 is provided at the top of the tube body 1. The flange 12 is provided with a plurality of connecting screw holes evenly spaced along the circumferential direction, so as to connect the flange 12 to the power connection pipe or electrode sleeve of the arc protection test device 7 by connecting bolts or connecting screws (refer to the power connection pipe A and electrode sleeve A in the arc generation and sample placement module of the arc protection fabric arc protection integrated test system and its control method in patent CN115656265B, which is prior art and will not be described in detail here). Figure 4 As shown, this fixes the tube body 1 to the arc protection test device 7, thereby achieving the connection and conduction between the electrode 6 and the arc protection test device 7, ensuring that the current flows stably through the electrode 6 during the test.

[0028] Combination Figure 1 and Figure 2 As shown, the bottom of the tube body 1 has a notch 13 communicating with the insertion through hole 11. Two side plates 2, fixedly connected to the tube body 1, are located at the notch 13. The two side plates 2 are parallel and symmetrically arranged on both sides of the central axis of the tube body 1. A rotatable clamping handle 3, positioned between the two side plates 2, is also located at the notch 13. The clamping handle 3 includes an eccentric end 31 fixedly connected to a rotating handle 32. The rotation axis of the eccentric end 31 is perpendicular to the axis of the tube body 1. (Reference) Figure 3As shown, during the rotation of the eccentric end 31, the maximum distance between the eccentric end 31 and the axis of the tube body 1 is greater than the radius of the electrode 6, and the minimum distance between the eccentric end 31 and the axis of the tube body 1 is less than the radius of the electrode 6. This allows the eccentric end 31 to rotate by rotating the handle 32, or to press and tighten the electrode 6 inserted in the insertion through hole 11, thereby fixing the electrode 6 or releasing the electrode 6. It should be noted that in this embodiment, the diameter of the insertion through hole 11 is equal to the outer diameter of the electrode 6. However, in actual applications, to ensure that the electrode 6 can be movably inserted into or removed from the insertion through hole 11, there will be corresponding fitting tolerances between the electrode 6 and the insertion through hole 11. The specific specifications and dimensions can be set as needed according to the outer diameter of the electrode 6, the diameter of the insertion through hole 11, and the tolerance table, which will not be elaborated here.

[0029] like Figure 1 and Figure 3 As shown, a central shaft hole 311 is provided at the rotation center axis position of the eccentric end 31, which is transversely penetrating the eccentric end 31. A central horizontal shaft 4 is provided between the two side plate arms 2 and is perpendicularly connected to both of them. The central shaft hole 311 is adapted to the central horizontal shaft 4. The eccentric end 31 is rotatably sleeved on the outer periphery of the central horizontal shaft 4 through the central shaft hole 311.

[0030] Optionally, in some embodiments, the two ends of the central horizontal shaft 4 are vertically fixed on the side plate arms 2 on both sides, or the central horizontal shaft 4 and the side plate arms 2 on both sides are connected in an integral structure.

[0031] Combination Figure 1 and Figure 2 As shown, the side plate arm 2 is provided with a transverse through-hole 21. The through-hole 21 is a circular hole adapted to the central horizontal shaft 4. Both ends of the central horizontal shaft 4 pass through the through-hole 21 and extend outwards. Locking nuts 41 are threadedly connected to both ends of the central horizontal shaft 4. It should be noted that during normal use, the central horizontal shaft 4 and the locking nuts 41 do not rotate with the clamping handle 3. The locking nuts 41 and the central horizontal shaft 4 are only removed when the clamping handle 3 needs to be replaced or other replacements and maintenance are required.

[0032] Furthermore, such as Figure 1 and Figure 2 As shown, the side plate arm 2 is also provided with a top screw hole 22 that communicates with the support through hole 21 and a rotatable top bolt 23 that is installed in the top screw hole 22. The top bolt 23 is threadedly engaged with the top screw hole 22. By rotating the top bolt 23, its end abuts against the central horizontal shaft 4, thereby further fixing the central horizontal shaft 4 and preventing the central horizontal shaft 4 from rotating and slipping. This prevents the clamping handle 3 from rotating and slipping and the electrode 6 from falling off, thus improving the stability and reliability of the clamping.

[0033] It should be noted that the diagram shown in this embodiment is only a schematic diagram of the clamping handle 3 in reverse installation and use state. (Refer to...) Figure 3 As shown, at this time, rotating the clamping handle 3 counterclockwise turns it into clamping electrode 6, and rotating it clockwise turns it into releasing electrode 6. However, in actual use, the clamping handle 3 can be installed in the reverse direction (refer to Embodiment 3). Figure 6 As shown in the figure, when the clamping handle 3 rotates counterclockwise, it becomes the release electrode 6, and when it rotates clockwise, it becomes the clamping electrode 6. Since these are just different installation and use states of the clamping handle 3, they are not shown in the figure and will not be described in detail here, but they are still within the protection scope of this application.

[0034] Example 2:

[0035] In embodiment 2 of this utility model, using Figure 5 The following description will be provided. Furthermore, descriptions of parts that are not different from those in Embodiment 1 will be omitted, and the same reference numerals will be used instead. Figure 5 To ensure clarity and avoid obscuring the image, the locking nut 41 is not shown in the figure.

[0036] like Figure 5 As shown, the electrode fixing assembly for the arc-resistant shield testing device of this utility model has a horizontally arranged slot 21 for the support through hole 21 of the side plate arm 2. That is, the cross-section of the support through hole 21 is a horizontal straight slot, and the length of the slot is greater than the diameter of the central horizontal axis 4. By adjusting the horizontal position of the central horizontal axis 4 within the slot, the distance between the central horizontal axis 4 and the axis of the tube body 1 is changed, i.e., the distance between the rotation center axis of the eccentric end 31 and the axis of the tube body 1 is changed. This, in turn, changes the maximum and minimum distance between the eccentric end 31 and the axis of the tube body 1 during rotation, thereby altering the clamping and fixing effect on the electrode 6 and the difficulty of locking and fixing the electrode 6, i.e., the external force required to rotate the handle 32 and the angle of rotation. It should be noted that in actual operation, the horizontal position of the central horizontal axis 4 within the slot can be adjusted by rotating the top bolt 23, or the position of the central horizontal axis 4 can be adjusted by directly loosening the locking nut 41.

[0037] Example 3:

[0038] In embodiment 3 of this utility model, using Figure 6 The following description is provided. Furthermore, descriptions of parts that are not different from those in Embodiment 1 are omitted, and the same reference numerals are used. Additionally, in this embodiment, the installation direction of the clamping handle 3 differs from that in Embodiment 1. The clamping handle 3 is installed facing forward. In this state, rotating the rotating handle 32 counterclockwise releases the electrode 6, and rotating it clockwise clamps the electrode 6.

[0039] like Figure 6As shown, the electrode fixing assembly for the arc-resistant shield testing device of this utility model includes a tube body 1 with an elastic placement clip 5 fixedly connected thereto. The elastic placement clip 5 is positioned near the flange 12, specifically on the outer wall of the tube body 1 below the flange 12. The elastic placement clip 5 is an approximately "U"-shaped elastic clip with a narrowed opening, and the opening width of the elastic placement clip 5 is smaller than the width of the rotating handle 32. This allows the rotating handle 32 to be rotated and inserted into the elastic placement clip 5 through the opening, thereby limiting and fixing the rotating handle 32. This prevents the rotating handle 32 from automatically rotating downwards when the electrode is released, eliminating the need for the test personnel to hold the rotating handle 32 with one hand to limit its movement, and facilitating the test personnel to change or adjust the electrodes with both hands.

[0040] It should be noted that the elastic tension at the opening of the elastic placement clip 5 is greater than the rotational driving force generated by the rotation handle 32 due to its own weight, so that the rotation handle 32 will not automatically come out after being manually placed in the elastic placement clip 5.

[0041] Optionally, in some embodiments, the elastic placement clip 5 is detachably connected to the tube body 1 to facilitate the removal and replacement of the elastic placement clip 5.

[0042] In summary, the electrode fixing assembly for the arc protection shield test device provided by this utility model has a simple structure and is easy to use. It reduces the difficulty of replacing electrodes during arc protection testing, improves the convenience of electrode position adjustment and fixing operations, and thus improves test efficiency.

[0043] The above are merely preferred embodiments of the present utility model and do not limit the patent scope of the present utility model. All equivalent changes and modifications made within the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An electrode fixing assembly for an anti-arc shield testing device, characterized in that: The tube body (1) includes a tube body (1) with an insertion through hole (11) adapted to the electrode (6). The insertion through hole (11) is coaxially arranged with the tube body (1). The tube body (1) has a flange (12) at the top and a notch (13) communicating with the insertion through hole (11) at the bottom. The tube body (1) also has a side plate arm (2) and a clamping handle (3) located at the notch (13). There are two side plate arms (2) arranged in parallel and symmetrically on both sides of the axis of the tube body (1). The clamping handle (3) is rotatably arranged between the two side plate arms (2) so that the electrode (6) inserted in the insertion through hole (11) can be clamped or released by rotating the clamping handle (3).

2. The electrode fixing assembly for the arc-resistant shield testing device according to claim 1, characterized in that: The clamping handle (3) includes a fixedly connected eccentric end (31) and a rotating handle (32). The rotation center axis of the eccentric end (31) is perpendicular to the axis of the tube body (1). The maximum distance between the eccentric end (31) and the axis of the tube body (1) is greater than the radius of the electrode (6). The minimum distance between the eccentric end (31) and the axis of the tube body (1) is less than the radius of the electrode (6).

3. The electrode fixing assembly for the arc-resistant shield testing device according to claim 2, characterized in that: The eccentric end (31) has a transverse through-hole (311) at the rotation center axis position, and a central horizontal shaft (4) is provided between the two side plate arms (2) and perpendicularly connected to them. The central shaft hole (311) is adapted to the central horizontal shaft (4), and the eccentric end (31) is rotatably sleeved on the outer periphery of the central horizontal shaft (4).

4. The electrode fixing assembly for the arc-resistant shield testing device according to claim 3, characterized in that: The side plate arm (2) is provided with a transverse through-hole (21), and the two ends of the central horizontal shaft (4) pass through the through-hole (21) and extend outward. The two ends of the central horizontal shaft (4) are provided with locking nuts (41) threadedly connected to it.

5. The electrode fixing assembly for the arc-resistant shield testing device according to claim 4, characterized in that: The supporting through hole (21) is a circular hole adapted to the central transverse axis (4); Alternatively, the supporting through hole (21) is a horizontally arranged slot, and the length of the slot is greater than the diameter of the central horizontal axis (4).

6. The electrode fixing assembly for the arc-resistant shield testing device according to claim 5, characterized in that: The side plate arm (2) is also provided with a top screw hole (22) that communicates with the support through hole (21) and a rotatable top bolt (23) provided in the top screw hole (22). The top bolt (23) is threadedly engaged with the top screw hole (22), and the end of the top bolt (23) abuts against the central horizontal axis (4).

7. The electrode fixing assembly for the arc-resistant shield testing device according to claim 2, characterized in that: The pipe body (1) is also provided with an elastic placement clip (5) fixedly connected thereto. The elastic placement clip (5) is arranged close to the flange (12). The elastic placement clip (5) is a "U"-shaped elastic clip with a narrow opening, and the width of the opening of the elastic placement clip (5) is smaller than the width of the rotating handle (32).

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