A cable burning test chamber

Abstract

The utility model discloses a kind of cable combustion test chamber, including cabinet, rack is arranged in the cabinet, the lower part of the rack is provided with the bottom platform of moving along Y axis direction and the Y axis translation mechanism connected with bottom platform, bottom platform is provided with the operation platform of moving along X axis direction and the X axis translation mechanism connected with operation platform, operation platform moves and is arranged in rack top surface, rack top surface one side is equipped with the clamping frame of clamping cable, operation platform is equipped with the combustion assembly that can swing to the clamping frame below. The utility model adjusts the horizontal position of the combustion assembly on operation platform by Y axis translation mechanism and X axis translation mechanism, so that combustion assembly accurately aims at cable on clamping frame and applies and removes flame, to improve measurement result;While combustion assembly can quickly swing to apply and remove flame, avoid time error due to artificial observation flame when artificially controlling combustion test start, stop, to further improve measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of cable performance testing technology, specifically a combustion test chamber for cables. Background Technology

[0002] Cables are a general term encompassing optical fibers, electrical cables, and similar items. They have numerous uses, primarily for control installations, equipment connections, and power transmission, making them a common and indispensable part of daily life. After production, cables typically undergo fire resistance testing in a combustion chamber to assess the flame-retardant properties of their insulation under abnormal conditions such as overheating and overcurrent. However, existing combustion chamber burners cannot automatically adjust their horizontal position, making it difficult to accurately apply and remove the flame from the cable, potentially leading to inaccurate measurement results due to incomplete combustion. Utility Model Content

[0003] The purpose of this invention is to provide a combustion test chamber for cables, which enables the combustion assembly to accurately apply and remove flames to the cables on the clamping frame, thereby improving the measurement results and solving the problem mentioned in the background art that the burner of the combustion test chamber cannot automatically adjust its horizontal position and cannot accurately apply and remove flames to the cables.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A combustion test chamber for cables includes a chassis, a frame inside the chassis, a base platform that moves along the Y-axis and a Y-axis translation mechanism connected to the base platform at the bottom of the frame, an operating table that moves along the X-axis and an X-axis translation mechanism connected to the operating table on the base platform, the operating table being movably mounted on the top surface of the chassis, a cable clamping frame being provided on one side of the top surface of the chassis, and a combustion component that can swing to below the clamping frame on the operating table.

[0006] Preferably, the combustion assembly includes a rotating shaft, a combustion base, a blowtorch, and a swing motor. The rotating shaft is rotatably mounted on the operating table, one end of the combustion base is fixed to the rotating shaft, the blowtorch is upright on the top surface of the combustion base, and the swing motor is mounted on the bottom of the operating table. The output shaft of the swing motor is connected to the rotating shaft for transmission.

[0007] Preferably, the control panel is equipped with an electronic ignition device located on one side of the combustion base.

[0008] Preferably, the horizontal clamp includes a clamping frame, a clamping block, a pull rod, and a spring. The clamping frame is fixed on the bracket, and a clamping cavity is formed in the middle of the clamping frame. The clamping block is movably disposed in the clamping cavity of the clamping frame. The bottom end of the pull rod is connected to the clamping block, and the top end of the pull rod passes upward through the clamping block. The spring is sleeved on the outer periphery of the pull rod located in the clamping cavity.

[0009] Preferably, the side wall of the clamping frame has an opening that extends into the clamping cavity, and the opening is located at the lower part of the clamping cavity.

[0010] Preferably, the Y-axis translation mechanism includes a first motor, a first screw, and a first slider. The first motor is installed on the lower part of the frame, the first screw is rotatably disposed on the lower part of the frame, and the first slider, which is connected to the bottom of the base, is threadedly sleeved on the first screw.

[0011] Preferably, a manual drive assembly is provided on the upper part of the frame. The manual drive assembly includes a rotating rod, a driving wheel, and a driven wheel. The rotating rod is rotatably mounted on the frame. The driving wheel is fixedly sleeved on the rotating rod. The driven wheel is fixedly sleeved on one end of the first screw. A conveyor belt is wound between the driving wheel and the driven wheel.

[0012] Preferably, the X-axis translation mechanism includes a second motor, a second screw, and a second slider. The second motor is mounted on the top surface of the base platform, the second screw is rotatably mounted on the top surface of the base platform, and the second slider, which is connected to the bottom of the operating table, is threadedly sleeved on the second screw.

[0013] Preferably, the top of the chassis is provided with an exhaust vent, and the exhaust vent is provided with a ventilation and smoke extraction system; the side wall of the chassis is provided with an air supply vent, and the air supply vent is provided with an air supply system.

[0014] Preferably, the system includes a control system, which includes a touch screen and a PLC controller connected to the touch screen, the PLC controller being connected to a thermal micro printer.

[0015] Compared with the prior art, the beneficial effects of this utility model are: by adjusting the horizontal position of the combustion component on the operating table through the Y-axis translation mechanism and the X-axis translation mechanism, the combustion component can accurately align with the cable on the clamp to apply and remove the flame, thereby improving the measurement results; at the same time, the combustion component can quickly swing to apply and remove the flame, avoiding time errors caused by human observation of the flame when the combustion test is started and stopped, thereby improving the measurement accuracy. Attached Figure Description

[0016] Figure 1 This is a perspective view of a combustion test chamber for cables according to the present invention;

[0017] Figure 2 This is a top view of a combustion test chamber for cables according to the present invention;

[0018] Figure 3 for Figure 2 Sectional view of section AA;

[0019] Figure 4This is a perspective view of the combustion assembly on the frame of this utility model;

[0020] Figure 5 This is a perspective view of the clamping frame on the machine frame of this utility model;

[0021] Figure 6 This is a side view of the frame of this utility model;

[0022] Figure 7 This is a rear view of the frame of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the horizontal clamp of this utility model.

[0024] In the diagram: 1. Chassis; 2. Frame; 3. Base; 4. Y-axis translation mechanism; 41. First motor; 42. First screw; 43. First slider; 5. Operating table; 6. X-axis translation mechanism; 61. Second motor; 62. Second screw; 63. Second slider; 7. Clamping frame; 71. Support; 72. Horizontal clamp; 721. Clamping frame; 7211. Clamping cavity; 7212. Opening; 722. Clamping block; 723. Pull rod; 724. Spring; 73. Vertical clamp; 8. Combustion assembly; 81. Rotating shaft; 82. Combustion base; 83. Blowtorch; 84. Swing motor; 9. Electronic ignition device; 10. Manual drive assembly; 101. Rotating rod; 102. Drive wheel; 103. Driven wheel; 11. Exhaust system; 12. Air supply system. 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. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 A cable combustion test chamber includes a chassis 1, within which a frame 2 is disposed. A base 3, movable along the Y-axis, and a Y-axis translation mechanism 4 connected to the base 3 are disposed at the lower part of the frame 2. An operating platform 5, movable along the X-axis, and an X-axis translation mechanism 6 connected to the operating platform 5 are disposed on the base 3. In this embodiment, the operating platform 5 is movably disposed on the top surface of the frame 2. A cable clamping frame 7 is disposed on one side of the top surface of the frame 2, and a combustion assembly 8, which can swing to below the clamping frame 7, is disposed on the operating platform 5.

[0027] This invention uses the Y-axis translation mechanism 4 and the X-axis translation mechanism 6 to adjust the horizontal position of the combustion component 8 on the operating table 5, so that the combustion component 8 can accurately align with the cable on the clamping frame 7 to apply and remove the flame, thereby improving the measurement results. At the same time, the combustion component 8 can swing quickly to apply and remove the flame, avoiding time errors caused by human observation of the flame when the combustion test is started and stopped, thus improving the measurement accuracy.

[0028] Please see Figure 4-5 The combustion assembly 8 includes a rotating shaft 81, a combustion base 82, a blowtorch 83, and a swing motor 84. The rotating shaft 81 is rotatably mounted on the operating table 5. One end of the combustion base 82 is fixed to the rotating shaft 81. The blowtorch 83 is upright on the top surface of the combustion base 82. The swing motor 84 is mounted on the bottom of the operating table 5. The output shaft of the swing motor 84 is connected to the rotating shaft 81 for driving the rotating shaft 81 to rotate, causing the blowtorch 83 on the combustion base 82 to swing, thereby enabling the blowtorch 83 to quickly swing to below the clamping frame 7 to apply or remove the flame. An electronic ignition device 9 is provided on the operating table 5, located on one side of the combustion base 82. The electronic ignition device 9 eliminates the need for manual open flame ignition, increasing safety. A flaming tube is provided on the top of the blowtorch 83 to guide the flame of the blowtorch 83 into a beam, making the flame burn more stably.

[0029] In this embodiment, the operating table 5 is covered with a sponge layer to prevent the burning materials from the cable from falling onto the operating table 5 and burning it.

[0030] Please see Figure 5-6 The clamping frame 7 includes a support 71, horizontal clamps 72, and vertical clamps 73. The support 71 is erected on the top surface of the frame 2. There are at least two horizontal clamps 72, which are arranged opposite each other at the left and right ends of the support 71. There are at least two vertical clamps 73, which are arranged opposite each other at the top and bottom ends of the support 71. The two horizontal clamps 72 are used to clamp the cable horizontally for horizontal sample combustion tests; the two vertical clamps 73 are used to clamp the cable vertically for vertical sample combustion tests.

[0031] Please refer to Figure 8The horizontal clamp 72 includes a clamping frame 721, a clamping block 722, a pull rod 723, and a spring 724. The clamping frame 721 is fixed to the bracket 71, and a clamping cavity 7211 is formed in the middle of the clamping frame 721. The clamping block 722 is movably disposed within the clamping cavity 7211 of the clamping frame 721. The bottom end of the pull rod 723 is connected to the clamping block 722, and the top end of the pull rod 723 passes upward through the clamping block 722. A pull ring is connected to the top end of the pull rod 723. The spring 724 is sleeved on the outer periphery of the pull rod 723 located within the clamping cavity 7211. In this embodiment, the side wall of the clamping frame 721 has an opening 7212 that extends into the clamping cavity 7211. The opening 7212 is located at the lower part of the clamping cavity 7211, facilitating the entry and exit of the cable end into the clamping cavity 7211 and improving the efficiency of cable clamping. In this embodiment, the structure of the vertical clamp 73 is the same as that of the horizontal clamp 72, and will not be described again here.

[0032] Please see Figure 6 The Y-axis translation mechanism 4 includes a first motor 41, a first screw 42, and a first slider 43. The first motor 41 is mounted on the lower part of the frame 2, the first screw 42 is rotatably mounted on the lower part of the frame 2, and the first slider 43, which is connected to the bottom of the base 3, is threadedly sleeved on the first screw 42. When adjusting the position of the base 3 and the operating table 5, the first motor 41 drives the first screw 42 to rotate, and the first screw 42 drives the base 3 and the operating table 5 to translate along the Y-axis. In this embodiment, two first guide rods are arranged opposite each other on the lower part of the frame 2, and the base 3 is movably mounted on the two first guide rods.

[0033] Please see Figure 4 and Figure 6 The upper part of the frame 2 is provided with a manual drive assembly 10. The manual drive assembly 10 includes a rotating rod 101, a driving wheel 102 and a driven wheel 103. The rotating rod 101 is rotatably mounted on the frame 2. The driving wheel 102 is fixedly sleeved on the rotating rod 101. The driven wheel 103 is fixedly sleeved on one end of the first screw 42. A conveyor belt is wound between the driving wheel 102 and the driven wheel 103. The first screw 42 can be rotated by rotating the rotating rod 101, and the base platform 3 can also be translated along the Y-axis.

[0034] Please see Figure 7 The X-axis translation mechanism 6 includes a second motor 61, a second screw 62, and a second slider 63. The second motor 61 is mounted on the top surface of the base platform 3, and the second screw 62 is rotatably mounted on the top surface of the base platform 3. The second slider 63, which is connected to the bottom of the operating table 5, is threadedly sleeved on the second screw 62. When adjusting the position of the operating table 5, the second motor 61 drives the second screw 62 to rotate, and the second screw 62 drives the operating table 5 to translate along the X-axis. In this embodiment, two second guide rods are arranged opposite each other on the top surface of the base platform 3, and the operating table 5 is movably mounted on the two second guide rods.

[0035] Please see Figure 1 The top of the chassis 1 is equipped with an exhaust vent, which houses a ventilation and smoke extraction system 11 to promptly discharge exhaust gases outdoors. During the test, the exhaust vent remains closed. The side wall of the chassis 1 is equipped with an air supply vent, which houses an air supply system 12. Upon completion of the test, both the exhaust vent and the air supply vent are opened simultaneously, allowing the air supply system 12 to supply air into the chassis and the ventilation and smoke extraction system 11 to exhaust gases out of the chassis 1. During the test, the air supply vent remains closed. In this embodiment, both the ventilation and smoke extraction system 11 and the air supply system 12 utilize fans for ventilation. Movable baffles (not shown) are installed inside both the exhaust vent and the air supply vent to close them.

[0036] The front of the chassis 1 is equipped with a sealed tempered glass observation window, which facilitates observation of the test process and makes it convenient for the experimenter to operate; the blowtorch 83 is connected to a gas cylinder for gas supply.

[0037] The cable combustion test chamber includes a control system, which comprises a touch screen and a PLC controller connected to the touch screen. The chassis 1 has several function buttons connected to the PLC controller, such as ignition and power buttons. Furthermore, the PLC controller is connected to a thermal micro-printer, which can print the test results recorded by the PLC controller after the test.

[0038] The working principle of the combustion test chamber for cables of this utility model is as follows:

[0039] Please see Figure 5 Before the test, the horizontal position of the combustion component 8 on the operating table 5 is adjusted using the Y-axis translation mechanism 4 and the X-axis translation mechanism 6 so that the torch 83 can be aimed at the cable for combustion. During the test, the cable is vertically fixed to the center of the bracket 71 using the vertical clamp 73, or horizontally fixed to the center of the bracket 71 using the horizontal clamp 72. Please refer to [link to relevant documentation]. Figure 1 Then, parameters such as flame application time, number of flame applications, stop time, number of tests, and combustion angle are set via the touch screen. The test then begins. The swing motor 84 first drives the blowtorch 83 to swing rapidly to the electronic ignition device 9, which ignites the blowtorch 83. Subsequently, the swing motor 84 rotates, causing the blowtorch 83 to swing to the corresponding part of the cable to apply flame. At the same time, the flame application time on the panel starts timing. When the flame application time setting value is reached, the blowtorch 83 automatically retracts, stopping the flame application to the cable. Simultaneously, the stop time and the flame delay time are automatically timed. When the number of tests (e.g., 5 times) is reached, the control system automatically stops the test. It has the advantages of high accuracy, automatic timing, automatic test termination, and simple and convenient operation. At the same time, the built-in thermal micro printer can print the test results in real time, eliminating the need for manual paper and pen recording.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combustion test chamber for cables, comprising a chassis (1), characterized in that: The chassis (1) is equipped with a frame (2). The frame (2) is equipped with a base (3) that moves along the Y-axis and a Y-axis translation mechanism (4) connected to the base (3). The base (3) is equipped with an operating table (5) that moves along the X-axis and an X-axis translation mechanism (6) connected to the operating table (5). The operating table (5) is movably mounted on the top surface of the frame (2). A clamping frame (7) for holding cables is provided on one side of the top surface of the frame (2). A combustion assembly (8) that can swing to the bottom of the clamping frame (7) is provided on the operating table (5).

2. The cable combustion test chamber according to claim 1, characterized in that: The combustion assembly (8) includes a rotating shaft (81), a combustion base (82), a blowtorch (83), and a swing motor (84). The rotating shaft (81) is rotatably mounted on the operating table (5). One end of the combustion base (82) is fixed on the rotating shaft (81). The blowtorch (83) is upright mounted on the top surface of the combustion base (82). The swing motor (84) is mounted on the bottom of the operating table (5). The output shaft of the swing motor (84) is connected to the rotating shaft (81) in a transmission connection.

3. The combustion test chamber for cables according to claim 2, characterized in that: An electronic ignition device (9) is provided on the control panel (5) located on one side of the combustion base (82).

4. The combustion test chamber for cables according to claim 1, characterized in that: The clamping frame (7) includes a support (71), a horizontal clamp (72), and a vertical clamp (73). The support (71) is erected on the top surface of the frame (2). There are at least two horizontal clamps (72), which are arranged opposite each other at the left and right ends of the support (71). There are at least two vertical clamps (73), which are arranged opposite each other at the upper and lower ends of the support (71). The horizontal clamp (72) includes a clamping frame (721), a clamping block (722), a pull rod (723), and a spring (723). 724), the clamping frame (721) is fixed on the bracket (71), the clamping frame (721) has a clamping cavity (7211) in the middle, the clamping block (722) is movably disposed in the clamping cavity (7211) of the clamping frame (721), the bottom end of the pull rod (723) is connected to the clamping block (722), the top end of the pull rod (723) passes upward through the clamping block (722), and the spring (724) is sleeved on the outer periphery of the pull rod (723) located in the clamping cavity (7211).

5. The combustion test chamber for cables according to claim 4, characterized in that: The side wall of the clamping frame (721) has an opening (7212) that extends into the clamping cavity (7211), and the opening (7212) is located at the lower part of the clamping cavity (7211).

6. The combustion test chamber for cables according to claim 1, characterized in that: The Y-axis translation mechanism (4) includes a first motor (41), a first screw (42) and a first slider (43). The first motor (41) is installed on the lower part of the frame (2), the first screw (42) is rotatably disposed on the lower part of the frame (2), and the first slider (43) connected to the bottom of the base (3) is threaded onto the first screw (42).

7. The combustion test chamber for cables according to claim 6, characterized in that: The upper part of the frame (2) is provided with a manual drive assembly (10). The manual drive assembly (10) includes a rotating rod (101), a drive wheel (102) and a driven wheel (103). The rotating rod (101) is rotatably mounted on the frame (2). The drive wheel (102) is fixedly mounted on the rotating rod (101). The driven wheel (103) is fixedly mounted on one end of the first screw (42). A conveyor belt is wound between the drive wheel (102) and the driven wheel (103).

8. The combustion test chamber for cables according to claim 6, characterized in that: The X-axis translation mechanism (6) includes a second motor (61), a second screw (62) and a second slider (63). The second motor (61) is mounted on the top surface of the base (3), the second screw (62) is rotatably mounted on the top surface of the base (3), and the second slider (63) connected to the bottom of the operating table (5) is threaded onto the second screw (62).

9. The cable combustion test chamber according to any one of claims 1-8, characterized in that: The top of the chassis (1) is provided with an exhaust door, and the exhaust door is provided with a ventilation and smoke extraction system (11); the side wall of the chassis (1) is provided with an air supply door, and the air supply door is provided with an air supply system (12).

10. The combustion test chamber for cables according to any one of claims 1-8, characterized in that: The system includes a control system, which comprises a touch screen and a PLC controller connected to the touch screen. The PLC controller is connected to a thermal micro printer.

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