Ignition mechanism of wire and cable combustion test box

Abstract

The utility model relates to the technical field of material detection, in particular to an ignition mechanism of an electric wire and cable combustion test box, which comprises a bearing table arranged in a test box body, an ignition source arranged in the test box body, a base plate arranged on the bearing table, and an overturning plate I, wherein one end of the overturning plate I is movably arranged in the middle of the base plate; and one end of the connecting rod is hinged to the base plate, and the other end of the connecting rod is hinged to the turnover plate I. When the device is used, a combustion test is carried out on rows of conventional cables, the output end of the air cylinder is in a retraction state, and ignition sources on the ventilation seats keep consistent orientations, so that the rows of conventional cables are subjected to a consistent-strength combustion effect; when a combustion test is carried out on a bunched cable with a large wire diameter, the output end of the air cylinder is in a stretching-out state, all the ignition sources surround the bunched cable with the large wire diameter, the consistent intensity combustion effect can be carried out on the surface of the bunched cable, and the authenticity of test data is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to material detection technical field especially, relate to a kind of ignition mechanism of electric wire and cable combustion test box. BACKGROUND

[0002] In order to ensure the safety and compliance of electric wire and cable products, evaluate its fire performance under certain conditions, it is necessary to carry out combustion test, specifically, select appropriate length and diameter of electric wire and cable, after fixing, ignite the sample by ignition source of gas supply to carry out surface combustion, analyze flame propagation speed and whether self-extinguishing data.

[0003] For example, the Chinese patent with application number CN201920737546.3 discloses a combustion test chamber, which includes a test chamber body, an operating port is arranged at the top end of the test chamber body, a sliding groove is arranged on the bottom wall of the test chamber body, a threaded rod is arranged in the sliding groove along the groove direction, a drive rod is rotatably connected to the test chamber body, a driving bevel gear is arranged on one end of the drive rod that extends into the vertical groove, and cooperates with a driven bevel gear. This design facilitates the adjustment between the test object and the heating source by the test personnel. However, for bundled cables with thick diameters, using heating sources with the same orientation can cause significant differences in the ignition effect on the surface of the cables, affecting the authenticity of the test data. SUMMARY

[0004] Therefore, the purpose of the utility model is to provide an ignition mechanism for electric wire and cable combustion test chamber to solve the technical problem that, for bundled cables with thick diameters, using heating sources with the same orientation can cause significant differences in the ignition effect on the surface of the cables, affecting the authenticity of the test data.

[0005] To achieve the above purpose, the utility model provides an ignition mechanism for electric wire and cable combustion test chamber, which includes a support table installed in the test chamber body, and a ignition source arranged in the test chamber body. The support table is installed with a base plate. The ignition mechanism further includes:

[0006] A first flip plate is movably installed at the middle part of the base plate.

[0007] A connecting rod is hingedly connected to the base plate at one end, and hingedly connected to the first flip plate at the other end.

[0008] A second flip plate is hingedly connected to the base plate at one end, and movably installed with the first flip plate at the other end.

[0009] An adjusting assembly is used to adjust the flame direction of the ignition source.

[0010] A driving assembly is arranged to drive the first and second overturning plates to rotate.

[0011] Further, the driving assembly comprises;

[0012] A cylinder is arranged on the supporting table;

[0013] A fixed head is arranged on the output end of the cylinder;

[0014] A sliding block is rotatably arranged on the fixed head and slidably arranged on the second overturning plate.

[0015] Further, a temperature insulation cover is arranged on the supporting table, and the cylinder is arranged in the temperature insulation cover.

[0016] Further, the side end of the base plate, the first overturning plate and the second overturning plate is provided with an extending section.

[0017] Further, the adjusting assembly comprises;

[0018] A ventilation seat is arranged on each extending section, and external fuel is supplied to the ignition source through the ventilation seat;

[0019] A rotating wheel is fixed with the ignition source, and the rotating wheel is rotatably arranged on the top of the ventilation seat and fixed through a locking nut.

[0020] Further, the output end of the cylinder is in a retracted state, and the ignition sources are in a consistent direction.

[0021] Further, the output end of the cylinder is in an extended state, and the projections of the ignition sources in the vertical direction are distributed on an arc.

[0022] Further, a support is detachably arranged on the supporting table, and the base plate is detachably arranged on the support.

[0023] The ignition mechanism of the wire and cable burning test box has the following beneficial effects: when used, the conventional cables in a row are subjected to the burning test, the output end of the cylinder is in a retracted state, the ignition sources on the ventilation seats are in a consistent direction, and the conventional cables in a row are subjected to consistent strength burning effect; when the thick bundled cables are subjected to the burning test, the output end of the cylinder is in an extended state, the ignition sources surround the thick bundled cables, the thick bundled cables are subjected to consistent strength burning effect, and the authenticity of the test data is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to make the technical scheme of the present application or the prior art clearer, the following will briefly introduce the drawings needed in the embodiment or the prior art description, obviously, the drawings in the following description are only the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0025] Figure 1 It is a structural schematic view of the present application;

[0026] Figure 2 It is an assembly schematic view of the temperature insulation cover, the support and the supporting table in the present application;

[0027] Figure 3 It is an assembly schematic view of the driving assembly and part of the structure in the present application;

[0028] Figure 4 It is an assembly schematic view of the adjusting assembly and the ignition source in the present application.

[0029] In the figure, the marks are:

[0030] 1, supporting table; 2, ignition source; 3, base plate; 4, turning plate one; 5, connecting rod; 6, turning plate two; 7, air cylinder; 8, fixed head; 9, sliding block; 10, temperature insulation cover; 11, extending section; 12, air seat; 13, rotating wheel; 14, support. DETAILED DESCRIPTION

[0031] In order to make the technical scheme of the present application or the prior art clearer, the following will briefly introduce the drawings needed in the embodiment or the prior art description, obviously, the drawings in the following description are only the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0032] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] The embodiment of the present application proposes an ignition mechanism of a wire and cable combustion test box, like Figures 1-4As shown, including the installation in the test box box body support table 1, test box box body also provided with a ignition source 2, support table 1 is installed on the substrate 3, ignition mechanism also includes:

[0034] Turnover plate one 4, one end of turnover plate one 4 is movably mounted on the middle of the substrate 3;

[0035] Connecting rod 5, one end of connecting rod 5 is hinged to the substrate 3, the other end of connecting rod 5 is hinged to the turnover plate one 4;

[0036] Turnover plate two 6, one end of turnover plate two 6 is hinged to the substrate 3, the other end of turnover plate one 4 is movably mounted on the turnover plate two 6;

[0037] Adjusting assembly for adjusting the direction of the flame of the ignition source 2;

[0038] Driving assembly for driving the turnover plate one 4 and the turnover plate two 6 to rotate.

[0039] In this embodiment, the driving assembly comprises:

[0040] Cylinder 7, cylinder 7 is installed on the support table 1;

[0041] Fixed head 8, fixed head 8 is installed on the output end of the cylinder 7;

[0042] Sliding block 9, sliding block 9 is rotatably mounted on the fixed head 8, and the sliding block 9 is also slidably arranged on the turnover plate two 6.

[0043] In this embodiment, a heat insulation cover 10 is installed on the support table 1, and the cylinder 7 is arranged in the heat insulation cover 10.

[0044] In this embodiment, the side ends of the substrate 3, the turnover plate one 4 and the turnover plate two 6 are provided with protruding sections 11.

[0045] In this embodiment, the adjusting assembly comprises:

[0046] Ventilation seat 12, ventilation seat 12 is installed on each protruding section 11, and external fuel is supplied to the ignition source 2 through the ventilation seat 12;

[0047] Rotary wheel 13, rotary wheel 13 is fixed with the ignition source 2, rotary wheel 13 is rotatably mounted on the top of the ventilation seat 12 and is fixed through a locking nut.

[0048] Working process and principle: in the use process of the present embodiment, when the conventional cable in row is subjected to the combustion test, the output end of the cylinder 7 is in the retracted state, the turnover plate two 6 is pulled to rotate around the hinge joint with the substrate 3 through the fixed head 8 and the sliding block 9, and under the action of the connecting rod 5, the turnover plate one 4 is driven to rotate synchronously, so that the ignition source 2 on each ventilation seat 12 maintains consistent direction, thereby achieving consistent intensity combustion effect on the conventional cable in row;

[0049] When the thicker cable is tested, the cylinder 7 is extended, and the above-mentioned operation is reversed, so that the projection of each igniter 2 in the vertical direction is distributed on an arc, and the thicker cable is surrounded, and the rotating wheel 13 can also adjust the flame angle of each igniter 2 on each air seat 12, and each igniter 2 can uniformly burn the surface of the cable.

[0050] In the embodiment, as shown in Figure 1 、 Figure 2 The support table 1 is detachably installed with the support 14, and the base plate 3 is detachably installed on the support 14, so that the cable can be effectively burned in different installation heights, and the adaptability is good.

[0051] It should be understood by those skilled in the art that the above discussion of any embodiment is only exemplary, and is not intended to imply that the scope of the utility model (including claims) is limited to these examples; under the idea of the utility model, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the utility model as described above, which are not provided in details for the sake of simplicity.

[0052] The utility model aims at covering all such alternatives, modifications and variations falling within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An ignition mechanism for a wire and cable burning test chamber, comprising a support table (1) installed in a test chamber housing, and a source of ignition (2) installed in the test chamber housing, characterized in that, The supporting table (1) is provided with a base plate (3), and the ignition mechanism further comprises: a first turning plate (4) having one end movably mounted on the middle part of the base plate (3); a connecting rod (5) having one end hingedly connected to the base plate (3) and the other end hingedly connected to the first turning plate (4); a second turning plate (6) having one end hingedly connected to the base plate (3) and the other end movably mounted on the second turning plate (6); an adjusting assembly for adjusting the flame direction of the ignition source (2); a driving assembly for driving the first and second turning plates (4, 6) to rotate.

2. An ignition mechanism for a wire and cable burning test chamber according to claim 1, wherein The driving assembly comprises: a cylinder (7) mounted on the supporting table (1); a fixed head (8) mounted on the output end of the cylinder (7); a sliding block (9) rotatably mounted on the fixed head (8) and slidably arranged on the second turning plate (6).

3. An ignition mechanism for a wire and cable burning test chamber according to claim 2, wherein The supporting table (1) is provided with a temperature insulation cover (10), and the cylinder (7) is arranged in the temperature insulation cover (10).

4. An ignition mechanism for a wire and cable burning test chamber according to claim 2, wherein The side ends of the base plate (3), the first and second turning plates (4, 6) are provided with extending sections (11).

5. An ignition mechanism for a wire and cable burning test chamber according to claim 4, wherein The adjusting assembly comprises: an air supply seat (12) mounted on each extending section (11) and used for supplying external fuel to the ignition source (2); a rotating wheel (13) fixed to the ignition source (2) and rotatably mounted on the top of the air supply seat (12) and fixed by a locking nut.

6. An ignition mechanism for a wire and cable burning test chamber according to claim 2, wherein In the retracted state of the output end of the cylinder (7), the directions of the ignition sources (2) are consistent.

7. An ignition mechanism for a wire and cable burning chamber as defined in claim 2, wherein In the extended state of the output end of the cylinder (7), the projections of the ignition sources (2) in the vertical direction are distributed on an arc line.

8. An ignition mechanism for a wire and cable burning test chamber according to claim 1, wherein The supporting table (1) is detachably provided with a support (14), and the base plate (3) is detachably mounted on the support (14).

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