Flame-retardant cable combustion test device

Abstract

The utility model discloses a flame-retardant cable combustion test device, which belongs to the field of cable combustion tests and comprises a shell, a filter component arranged at the top of the shell, a mounting block mounted in the shell, an ignition tube mounted on the mounting block and a mounting mechanism arranged in the shell, and the mounting mechanism comprises an upper fixing block and a lower fixing block. The upper fixing block and the lower fixing block are fixedly connected to the top and the bottom in the shell correspondingly, and connecting assemblies are detachably connected into the upper fixing block and the lower fixing block. The device has the beneficial effects that the clamping mechanism, the extinguishing mechanism and the stripping mechanism are arranged, a test cable can be conveniently put into the shell through the arrangement of the clamping mechanism, and after the test time is up, a worker can safely extinguish the burning cable through the arrangement of the extinguishing mechanism; and the carbonized cable skin is stripped through the stripping mechanism arranged on the movable rod, so that the test safety and efficiency are improved, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of cable combustion testing, and in particular to a flame-retardant cable combustion testing device. Background Technology

[0002] Flame-retardant cables are made of one or more insulated conductors and an outer insulating flame-retardant protective layer, used to transmit electricity from one point to another. The combustion test is a routine test for wires and cables and must be performed on specialized testing equipment.

[0003] A search revealed Chinese Patent Publication No. CN212904722U discloses a cable combustion testing device, comprising a housing, a movable trolley, and a smoke exhaust port. The housing has an openable door. A bottom slide rail is located at the bottom of the housing, and a moving positioning mechanism is slidably mounted on the bottom slide rail. The moving positioning mechanism has several rows of cable clamp groups, each consisting of several cable clamps arranged in a straight line. The movable trolley is equipped with a jetting structure for ejecting combustible gas and an igniter for ignition. This invention uses cable clamps instead of traditional wires, thus enabling rapid cable positioning simply by opening the cable clamps. This makes cable positioning very convenient, saving significant manpower and time. Furthermore, since each row of cable clamps is arranged in a straight line, the cable will not be misaligned after being positioned by the cable clamps. After the combustion test, staff need to extinguish the fire and peel off the carbonized layer after combustion for subsequent testing. However, the existing cable combustion test equipment lacks measures to facilitate the staff to perform the above operations, which affects the overall test results, reduces test efficiency, and its practicality needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a flame-retardant cable combustion test device to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A flame-retardant cable combustion testing device includes a housing, a filter assembly at the top of the housing, an installation block inside the housing with an ignition tube mounted on it, and an installation mechanism inside the housing. The installation mechanism includes an upper fixing block and a lower fixing block, which are fixedly connected to the top and bottom of the housing, respectively. A connecting assembly is detachably connected to the upper and lower fixing blocks. The connecting assembly includes an installation rod with two sets of clamping mechanisms for clamping both ends of the cable. An extinguishing mechanism is provided on the installation rod, including a movable sleeve with a connecting plate fixedly connected to its side. A set of hinged movable rods is rotatably connected to the connecting plate, with a sealing block fixedly connected to one end of each movable rod for isolating the burning cable from air. A peeling mechanism is provided on the movable rod for peeling off the carbonized layer of the cable.

[0007] Preferably, the stripping mechanism includes a push rod, which is slidably connected to the end of the movable rod away from the closing block. A piston block is fixedly connected to one end of the push rod, and the piston block is slidably connected inside the movable rod. A telescopic rod is fixedly connected to the end of the movable rod near the closing block. A hydraulic chamber is provided inside the movable rod. The piston block and the telescopic rod are located at opposite ends of the hydraulic chamber. An annular cutter is fixedly connected to one end of the telescopic rod, and the annular cutter is slidably connected inside the closing block.

[0008] Preferably, a slot is provided at the end of the movable rod away from the closed block, and an operating rod is rotatably connected to the movable rod, with the operating rod located in the slotted position.

[0009] Preferably, a heat-resistant pad is fixedly connected to one side of the sealing block, and the heat-resistant pad is located at the upper and lower openings of the sealing block.

[0010] Preferably, the connecting assembly includes a first connecting block and a second connecting block. The first connecting block and the mounting rod are respectively fixedly connected to the upper and lower ends of the mounting rod. The first connecting block is L-shaped and is used to snap into the upper fixing block, while the second connecting block is used to insert into the lower fixing block.

[0011] Preferably, the clamping mechanism includes a slider, which is slidably connected to the mounting rod. A fixing screw is threadedly connected to the slider, and a bidirectional lead screw is rotatably connected to the slider. Two opposing connecting arms are threadedly connected to the bidirectional lead screw, and a clamping block is fixedly connected to the end of the connecting arm away from the bidirectional lead screw.

[0012] Preferably, a collection box is provided at the bottom of the outer casing, and a closed door is rotatably connected to the side of the outer casing.

[0013] The beneficial effects are as follows: the clamping mechanism, extinguishing mechanism, and stripping mechanism are set up. The clamping mechanism makes it easy to put the test cable into the shell. After the test time is reached, the extinguishing mechanism allows the staff to safely extinguish the burning cable. The stripping mechanism set on the movable rod peels off the carbonized cable sheath, which improves the safety and efficiency of the test and is highly practical.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of a flame-retardant cable combustion test device according to the present invention;

[0017] Figure 2 This is a front sectional view of the flame-retardant cable combustion test device described in this utility model;

[0018] Figure 3 This is a schematic diagram showing the connection between the installation mechanism and the clamping mechanism of the flame-retardant cable combustion test device described in this utility model;

[0019] Figure 4 This is a schematic diagram showing the connection between the installation mechanism, clamping mechanism, and extinguishing mechanism of the flame-retardant cable combustion test device described in this utility model;

[0020] Figure 5 This is a schematic diagram of the clamping mechanism of the flame-retardant cable combustion test device described in this utility model;

[0021] Figure 6 This is a schematic diagram of the extinguishing mechanism of the flame-retardant cable combustion test device described in this utility model;

[0022] Figure 7 This is a schematic diagram of the movable rod structure of the flame-retardant cable combustion test device described in this utility model;

[0023] Figure 8 This is a cross-sectional view of the movable rod of the flame-retardant cable combustion test device described in this utility model.

[0024] The reference numerals in the attached drawings are explained as follows: 101, outer casing; 102, filter assembly; 103, mounting block; 104, ignition tube; 105, collection box; 106, sealing door; 201, upper fixing block; 202, lower fixing block; 203, first connecting block; 204, second connecting block; 205, mounting rod; 301, slider; 302, fixing screw; 303, double-acting screw; 304, connecting arm; 305, clamping block; 401, moving sleeve; 402, connecting plate; 403, movable rod; 404, sealing block; 405, heat-resistant pad; 406, slot; 501, push rod; 502, piston block; 503, operating rod; 504, telescopic rod; 505, hydraulic chamber; 506, annular cutter. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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 describing this utility model and simplifying the description, 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.

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figure 1 — Figure 8As shown, a flame-retardant cable combustion testing device includes a housing 101, a filter assembly 102 at the top of the housing 101, an installation block 103 inside the housing 101, a collection box 105 at the bottom of the housing 101, a rotatably connected sealing door 106 on the side of the housing 101, an ignition tube 104 mounted on the installation block 103, and an installation mechanism inside the housing 101. The installation mechanism includes an upper fixing block 201 and a lower fixing block 202, which are respectively bolted to the top and bottom of the housing 101. The upper fixing block 201 and the lower fixing block 202 can... The connection assembly includes a mounting rod 205, which has two sets of clamping mechanisms for clamping both ends of the cable. The mounting rod 205 also has an extinguishing mechanism, which includes a movable sleeve 401. A connecting plate 402 is bolted to the side of the movable sleeve 401. A set of hinged movable rods 403 are rotatably connected to the connecting plate 402. One end of each movable rod 403 is bolted to a sealing block 404, which isolates the burning cable from air. A peeling mechanism is also provided on the movable rod 403 for peeling off the carbonized layer of the cable.

[0029] In this embodiment, the stripping mechanism includes a push rod 501, which is slidably connected to the end of the movable rod 403 away from the sealing block 404. One end of the push rod 501 is bolted to a piston block 502, which is slidably connected inside the movable rod 403. The end of the movable rod 403 near the sealing block 404 is bolted to a telescopic rod 504. A hydraulic chamber 505 is provided inside the movable rod 403. The liquid in the hydraulic chamber 505 is squeezed by the piston block 502, causing the telescopic rod 504 to extend and push the annular cutter 506 toward the cable, cutting off the carbonized part and the unburned part of the cable. The piston block 502 and the telescopic rod 504 are located at opposite ends of the hydraulic chamber 505. One end of the telescopic rod 504 is bolted to the annular cutter 506, which is slidably connected inside the sealing block 404. After the sealing block 404 is closed, the annular cutter 506 cuts into the flame-retardant sheath of the cable, which is beneficial for workers to subsequently strip the carbonized layer and carry out subsequent testing.

[0030] In this embodiment, a slot 406 is provided at the end of the movable rod 403 away from the closed block 404. An operating rod 503 is rotatably connected to the movable rod 403. The operating rod 503 is located at the slot 406. When the operator grasps one end of the two movable rods 403, the operating rod 503 is moved towards the slot 406, which enables the operating rod 503 to push the push rod 501, thereby causing the push rod 501 to push the piston block 502.

[0031] In this embodiment, a heat-resistant pad 405 is bonded to one side of the sealing block 404. The heat-resistant pad 405 is located at the upper and lower openings of the sealing block 404. The heat-resistant pad 405 is used to further seal the burning location of the cable, reduce the oxygen supply to the burning part, and help extinguish the cable.

[0032] In this embodiment, the connecting assembly includes a first connecting block 203 and a second connecting block 204. The first connecting block 203 and the mounting rod 205 are respectively connected to the upper and lower ends of the mounting rod 205 by bolts. The first connecting block 203 is L-shaped, and an L-shaped groove is provided in the upper fixing block 201 for the first connecting block 203 to snap into the upper fixing block 201. The second connecting block 204 is used to insert into the lower fixing block 202. In this way, the operation step of installing the cable to the test position is eliminated.

[0033] In this embodiment, the clamping mechanism includes a slider 301, which is slidably connected to the mounting rod 205. A fixing screw 302 is threadedly connected to the slider 301, and a bidirectional lead screw 303 is rotatably connected to the slider 301. Two opposing connecting arms 304 are threadedly connected to the bidirectional lead screw 303. A clamping block 305 is bolted to the end of the connecting arm 304 away from the bidirectional lead screw 303. Rotating the bidirectional lead screw 303 brings the two connecting arms 304 closer to each other. The connecting arms 304 push the clamping block 305 to clamp the upper and lower ends of the cable, which is beneficial for conducting vertical cable combustion tests.

[0034] Working principle: Before use, the operator lifts and pulls out the first connecting block 203 and the second connecting block 204 from the upper fixing block 201 and the lower fixing block 202. Then, the installation rod 205 is taken out, and the bidirectional screw 303 on the slider 301 is rotated. The bidirectional screw 303 pushes the clamping block 305 through the connecting arm 304 to clamp both ends of the test cable. Then, the fixing screw 302 is loosened from the slider 301, and the two sliders 301 are slid up and down until the distance between the two sliders 301 is consistent with the cable length. After that, the installation rod 205 is put into the outer shell 101, so that the first connecting block 203 and the second connecting block 204 are connected into the upper fixing block 201 and the lower fixing block 202. After the fixing is completed, the sealing door 106 is closed, the ignition tube 104 is turned on to ignite the bottom of the cable, and the combustion test begins. The exhaust gas pollution generated by the cable combustion is absorbed into the filter assembly 102, and the resulting debris falls into the collection box 105. After the specified time is reached, the operator opens the sealing door 106 and holds the cable. Move the movable rod 403 away from the end of the second connecting block 204 and move the movable sleeve 401 to the combustion position. Squeeze the two movable rods 403, and the sealing block 404 at the end of the movable rod 403 will close, greatly reducing the oxygen supply and smothering the flames of the burning part. After the fire is extinguished, the cable is still in a high temperature state. At this time, push the operating rod 503 into the slot 406. The operating rod 503 pushes the push rod 501, and the push rod 501 pushes the piston block 502. The liquid in the hydraulic chamber 505 is squeezed by the piston block 502, causing the telescopic rod 504 to extend. The telescopic rod 504 pushes the annular cutter 506 towards the cable, cutting off the carbonized part and the unburned part of the cable. Then, continue to hold the movable rod 403 and move it downward to peel off the carbonized layer of the cable, which is beneficial for subsequent further testing. The whole process does not require personnel to come into contact with the high-temperature cable, and the safety is high. After peeling is completed, take out the mounting rod 205, rotate the bidirectional screw 303 to release the clamping block 305, and the next batch of flame-retardant cable combustion test can be carried out.

[0035] 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flame-retardant cable combustion testing device, comprising a housing (101), a filter assembly (102) disposed on the top of the housing (101), a mounting block (103) installed inside the housing (101), and an ignition tube (104) mounted on the mounting block (103), characterized in that: An installation mechanism is provided inside the housing (101). The installation mechanism includes an upper fixing block (201) and a lower fixing block (202). The upper fixing block (201) and the lower fixing block (202) are respectively fixedly connected to the top and bottom of the housing (101). A connecting assembly is detachably connected inside the upper fixing block (201) and the lower fixing block (202). The connecting assembly includes a mounting rod (205). Two sets of clamping mechanisms are provided on the mounting rod (205). The clamping mechanisms are used to clamp the two ends of the cable. At the end, the mounting rod (205) is provided with an extinguishing mechanism, the extinguishing mechanism includes a movable sleeve (401), the movable sleeve (401) is fixedly connected to a connecting plate (402) on its side, the connecting plate (402) is rotatably connected to a set of movable rods (403) that are hinged to each other, one end of the movable rod (403) is fixedly connected to a sealing block (404), the sealing block (404) is used to isolate the burning cable from the air, and the movable rod (403) is provided with a peeling mechanism, the peeling mechanism is used to peel off the carbonized layer of the cable.

2. The flame-retardant cable combustion testing device according to claim 1, characterized in that: The peeling mechanism includes a push rod (501), which is slidably connected to one end of the movable rod (403) away from the closed block (404). A piston block (502) is fixedly connected to one end of the push rod (501), which is slidably connected inside the movable rod (403). A telescopic rod (504) is fixedly connected to one end of the movable rod (403) near the closed block (404). A hydraulic chamber (505) is provided inside the movable rod (403). The piston block (502) and the telescopic rod (504) are located at opposite ends of the hydraulic chamber (505). A ring cutter (506) is fixedly connected to one end of the telescopic rod (504), which is slidably connected inside the closed block (404).

3. The flame-retardant cable combustion test device according to claim 1, characterized in that: The movable rod (403) has a slot (406) at one end away from the closed block (404), and an operating rod (503) is rotatably connected to the movable rod (403), with the operating rod (503) located at the slot (406).

4. The flame-retardant cable combustion testing device according to claim 1, characterized in that: A heat-resistant pad (405) is fixedly connected to one side of the closed block (404), and the heat-resistant pad (405) is located at the upper and lower openings of the closed block (404).

5. The flame-retardant cable combustion test device according to claim 1, characterized in that: The connecting assembly includes a first connecting block (203) and a second connecting block (204). The first connecting block (203) and the mounting rod (205) are respectively fixedly connected to the upper and lower ends of the mounting rod (205). The first connecting block (203) is L-shaped and is used to snap into the upper fixing block (201). The second connecting block (204) is used to insert into the lower fixing block (202).

6. The flame-retardant cable combustion test device according to claim 1, characterized in that: The clamping mechanism includes a slider (301) which is slidably connected to the mounting rod (205). A fixing screw (302) is threaded onto the slider (301). A bidirectional lead screw (303) is rotatably connected onto the slider (301). Two opposing connecting arms (304) are threaded onto the bidirectional lead screw (303). A clamping block (305) is fixedly connected to one end of each connecting arm (304) away from the bidirectional lead screw (303).

7. The flame-retardant cable combustion test device according to claim 1, characterized in that: A collection box (105) is provided at the bottom of the outer shell (101), and a closed door (106) is rotatably connected to the side of the outer shell (101).

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