A high temperature resistant detection device for work clothes

Abstract

The application relates to the technical field of material detection equipment, and relates to a high-temperature-resistant detection device for work clothes, which comprises a detection bin, a sensing detection unit is fixed on the inner wall of the detection bin, and a constant-force tensioning mechanism is arranged on the detection bin; the constant-force tensioning mechanism comprises support frames which are slidably penetrated through the side walls of the detection bin, a bent clamping mechanism is arranged on the support frames, and traction steel ropes are fixed on the support frames; after the fabric is clamped and the detection bin is closed, the rigidity locking characteristic of the damping bearing is relied on to drive the rotation of the driving shaft, the traction steel ropes are rigidly wound on the winding wheel, the two side support frames are slid, the slack fabric is completely straightened and shaped, the tensioning degree of the fabric before each detection, the relative distance between the fabric and a heat source and a detection element are completely unified, manual clamping errors are completely eliminated, the initial working conditions of multiple detection experiments are highly consistent, and the benchmark uniformity of detection data is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of material testing equipment technology, specifically relating to a high-temperature resistance testing device for work clothes. Background Technology

[0002] Work clothes are widely used in high-temperature industries such as metallurgy, welding, chemical industry, and power. They have protective properties such as flame retardancy, heat insulation, and high temperature resistance. They are important protective equipment to ensure the personal safety of workers in high-temperature operations. Their high temperature resistance and heat radiation resistance directly determine the safety protection level of workers. Therefore, strict high temperature resistance tests must be carried out before the products leave the factory to ensure that the products meet the safety standards.

[0003] Most existing high-temperature resistance testing devices for work clothes adopt a static flat-lay clamping method. During testing, the fabric is fixed flat and directly subjected to high-temperature burning and heat radiation testing. The testing structure is simple and the working conditions are simulated only once. During the testing process, the fabric is easily affected by the high-temperature heat source and undergoes thermal relaxation, thermal contraction, and irregular deformation. This causes the fabric's testing posture and the relative distance between it and the temperature measuring components to continuously shift, which can easily lead to deviations in the test data and poor testing stability. At the same time, the existing testing methods are mostly static flat-laying and cannot simulate the dynamic back-and-forth bending and wrinkling of the fabric caused by the limbs of workers wearing work clothes. The testing conditions are significantly different from the actual high-temperature wearing and use scenarios of work clothes, resulting in insufficient authenticity and reference value of the test results. It is difficult to accurately determine the high-temperature resistance and heat insulation protection performance of work clothes under real high-temperature dynamic working conditions. Therefore, it is necessary to design a high-temperature resistance testing device for work clothes. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature resistance testing device for work clothes that is simple in structure and reasonably designed in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A high-temperature resistance testing device for work clothes includes a testing chamber. A sensing unit is fixed on the inner wall of the testing chamber, and a constant force tensioning mechanism is provided on the testing chamber. The constant force tensioning mechanism includes a support frame that slides through the two side walls of the testing chamber. A bending clamping mechanism is provided on the support frame, and a traction steel rope is fixed on the support frame. A limiting sleeve is provided on the side wall of the testing chamber to limit the movement range of the support frame. One end of the traction steel rope passes through the side wall of the testing chamber and is fixed on a winding reel. The winding reel is mounted on a drive shaft through a damping bearing. The drive shaft is connected to a drive assembly with the same speed. A burner is fixed on the outside of the testing chamber, and a through hole is opened in the testing chamber at the position corresponding to the burner.

[0006] As a further optimization of the present invention, the same-speed drive assembly includes an outer support symmetrically installed on the outer wall of the detection chamber, a tension wheel rotatably connected to the outer support, and a drive belt wound around the tension wheel.

[0007] As a further optimization of the present invention, the drive shaft is rotatably connected to the support base, the support base is fixed to the detection chamber, a connecting wheel is fixedly sleeved on the drive shaft, and a drive belt is wound around the connecting wheel. One of the drive shafts is fixedly connected to the output end of the drive motor, and the drive motor is fixed to the detection chamber.

[0008] As a further optimization of the present invention, the bending clamping mechanism includes a drive frame slidably connected to a support frame. Multiple push rods are slidably connected in a slide rail on the drive frame. Two symmetrically distributed folding plates are rotatably connected to each push rod. A fixing component is provided on the folding plate. A fixing column is rotatably connected to the end of the folding plate away from the push rod. One fixing column is fixed to the support frame, and the other fixing columns are slidably connected in a slide groove on the support frame.

[0009] As a further optimization of the present invention, the fixing component includes a first support block fixed on the folding plate, a second support block slidably connected to the first support block, a clamping screw threadedly connected to the second support block, and the end of the clamping screw rotatably connected to the first support block.

[0010] As a further optimization of the present invention, the support frame is provided with a side support to limit the bending direction of the folding plate, and a return spring is provided on the support frame. One end of the return spring is fixedly connected to the fixed ring of the drive frame, and a follower mechanism connected to the drive shaft is provided on the drive frame.

[0011] As a further optimization of the present invention, the follow-up mechanism includes a push plate fixed on the drive frame, a push column abutting against the push plate, the push column being eccentrically fixed on the rotating disk, and the rotating disk being rotatably connected to the detection chamber.

[0012] As a further optimization of the present invention, a bevel gear A is fixed on the rotating disk, bevel gear A meshes with bevel gear B, and bevel gear B is fixedly sleeved on the drive shaft.

[0013] As a further optimization of the present invention, a support plate is rotatably connected to the detection chamber, and a copper disk calorimeter is provided on the support plate.

[0014] As a further optimization of the present invention, the testing chamber is fixed on an external support, a closed door is rotatably connected to the external support near the testing chamber, an inspection door is provided on the side of the external support away from the closed door, and a control panel is provided on the external support.

[0015] The beneficial effects of this invention are as follows: 1. After the fabric is clamped and the testing chamber is closed, the drive motor starts and drives the double drive shafts to rotate synchronously. Relying on the rigid locking characteristics of the damping bearing, the winding wheel is driven to rigidly wind up the traction steel rope, pulling the two side support frames to slide smoothly along the side wall of the testing chamber. With the stroke limiting function of the limiting sleeve, the loose fabric is slowly and evenly stretched and shaped completely, ensuring that the fabric tension, placement position, and relative distance to the heat source and testing elements are completely uniform before each test. This completely eliminates manual clamping errors, ensures that the initial working conditions of multiple test experiments are highly consistent, and greatly improves the benchmark uniformity of the test data.

[0016] 2. After the fabric is pre-tensioned and shaped, the tension of the fabric reaches the preset threshold of the damping bearing. The damping bearing slips adaptively, causing the take-up wheel and the drive shaft to rotate relative to each other, outputting a constant damping force throughout the entire testing cycle. During the entire testing cycle, with the burner continuously burning at high temperatures and the fabric dynamically bending back and forth, this constant force always acts on both ends of the fabric, continuously tightening the fabric and preventing problems such as slackness, local shrinkage, and posture deviation caused by high temperatures. This ensures the overall stability of the fabric posture and prevents the testing benchmark from drifting, while also maintaining the standard testing distance between the fabric and the copper calorimeter, eliminating heat flux detection errors caused by fabric deformation and misalignment, and comprehensively guaranteeing the accuracy and reliability of high-temperature testing data.

[0017] 3. During operation, the equipment of this invention relies on the synchronous power of the drive shaft. Through the meshing transmission of bevel gear B and bevel gear A, the rotating disk rotates at a constant speed, causing the eccentrically fixed push column to make periodic eccentric circular motion, continuously pushing and disengaging from the push plate on the drive frame. With the energy storage and rebound reset function of the return spring, the drive frame and push rod slide back and forth, driving multiple sets of folding plates to bend and flatten synchronously with the fixed column as the fulcrum. This causes the fabric to be tested to cycle through the dynamic transformation from tension to wrinkles, replicating the repeated deformation state of the fabric when workers wear work clothes and bend and stretch their limbs and engage in labor. This allows the high temperature resistance and heat insulation test to fully match the real high temperature operation scenario, effectively improving the authenticity and reference value of the high temperature resistance performance test of work clothes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the external support in this invention; Figure 3 This is a schematic diagram of the constant force tensioning mechanism in this invention; Figure 4 This is a schematic diagram of the same-speed drive component in this invention; Figure 5 This is a schematic diagram of the bending clamping mechanism in this invention; Figure 6This is a schematic diagram of the follower mechanism in this invention; Figure 7 This is an assembly diagram of the bending clamping mechanism in this invention.

[0019] In the diagram: 1. Detection chamber; 2. External support; 3. Sensor detection unit; 4. Constant force tensioning mechanism; 40. Limit sleeve; 41. Support frame; 42. Traction steel rope; 43. Winding reel; 44. Damping bearing; 45. Drive shaft; 46. Same speed drive assembly; 461. External support; 462. Tensioning wheel; 463. Drive belt; 464. Support base; 465. Connecting wheel; 466. Drive motor; 5. Bending clamping mechanism; 51. Drive frame; 52. 53. Push rod; 54. Folding plate; 55. Fixing column; 56. Fixing assembly; 57. First support block; 58. Second support block; 59. Clamping screw; 50. Side support; 51. Return spring; 52. Follower mechanism; 53. Push plate; 54. Push column; 55. Rotating disk; 56. Bevel gear A; 57. Bevel gear B; 6. Support plate; 7. Copper disc calorimeter; 8. Burner; 9. Enclosed door panel; 10. Inspection door; 11. Control panel. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example: Please refer to Figures 1-7A high-temperature resistance testing device for work clothes includes a testing chamber 1, which is an integral testing support cavity used to provide a sealed and stable high-temperature resistance testing environment, avoiding interference from external airflow and temperature on the testing data. A sensing unit 3 is fixed on the inner wall of the testing chamber 1, used to collect real-time temperature data inside the testing chamber 1. A constant-force tensioning mechanism 4 is installed on the testing chamber 1, used to apply constant-force tension to the fabric of the work clothes under test, counteracting the fabric's thermal relaxation and shrinkage deformation, ensuring that the fabric posture and testing spacing remain consistent throughout the testing process. A burner 8 is fixed to the outside of the testing chamber 1, and a through hole is opened at the position corresponding to the burner 8 in the testing chamber 1. The burner 8 outputs a stable heat source into the testing chamber 1 through the through hole, simulating high-temperature burning and heat radiation conditions. A support plate 6 is rotatably connected to the testing chamber 1, and a copper disc calorimeter 7 is installed on the support plate 6, which accurately collects the heat flux penetrating the fabric. The sensor detection unit 3 works in conjunction with the sensor to comprehensively determine the heat insulation and high-temperature resistance performance of the work clothes. The detection chamber 1 is fixed on the external support 2, which provides stable support for the whole machine. A closed door 9 is rotatably connected to the external support 2 near the detection chamber 1. The closed door 9 is used to close the detection chamber 1 during testing, forming a sealed detection space to prevent heat leakage. An inspection door 10 is set on the side of the external support 2 away from the closed door 9, which facilitates the inspection, cleaning and maintenance of the internal mechanism in the future. A control panel 11 is set on the external support 2 for starting and stopping the whole machine, adjusting parameters and displaying data. Before testing, the closed door 9 is closed to isolate external environmental interference and ensure the stability of internal temperature and thermal radiation parameters. During the testing process, the sensor detection unit 3 monitors the temperature field changes in the chamber in real time. With the help of the copper disc calorimeter 7 and the constant force tensioning mechanism 4, the heat insulation data of the fabric can be accurately obtained, and the distance between the fabric and the temperature measuring structure is kept constant, which effectively improves the repeatability and accuracy of multiple sets of test data.

[0022] Please see Figures 2-7The constant force tensioning mechanism 4 includes a support frame 41 that slides through both side walls of the testing chamber 1. The support frame 41 serves as the load-bearing base for the fabric clamping assembly and can slide horizontally along the side walls of the testing chamber 1. A bending clamping mechanism 5 is provided on the support frame 41. The bending clamping mechanism 5 is used to clamp the workwear fabric in sections and simulate the folded shape of wearing clothes to restore the actual working conditions. A traction steel rope 42 is fixed on the support frame 41. A limiting sleeve 40 is provided on the side wall of the testing chamber 1 to limit the movement range of the support frame 41. The limiting sleeve 40 mechanically limits the sliding stroke of the support frame 41 to prevent excessive skew of the fabric position and ensure the stability of the copper disc calorimeter. 7. The burner 8 is aligned with the center of the fabric; one end of the traction steel rope 42 passes through the side wall of the detection chamber 1 and is fixed to the take-up wheel 43. The take-up wheel 43 is mounted on the drive shaft 45 through the damping bearing 44. The damping bearing 44 can provide a preset damping torque during the rotation of the drive shaft 45, achieving the effect of rigid take-up in the early stage and constant force tension with damping slippage in the later stage; the drive shaft 45 is connected to the same speed drive assembly 46. The same speed drive assembly 46 ensures that the drive shafts 45 on both sides of the detection chamber 1 rotate synchronously, so that the fabric is evenly stressed at both ends, and the limit sleeves 40 on both sides prevent unilateral deviation; when the constant force tensioning mechanism 4 is working, the drive... The shaft 45 rotates continuously at a constant speed. In the initial stage of detection, the fabric is in a relaxed state, and the fabric tension is less than the preset damping torque of the damping bearing 44. At this time, the damping bearing 44 is in a locked transmission state. The winding wheel 43 and the drive shaft 45 rotate rigidly and synchronously, stably winding the traction steel rope 42. The traction steel rope 42 pulls the two side support frames 41 to slide to both sides, gradually and slowly and evenly stretching and straightening the fabric to be tested, completing the pre-tensioning and shaping. During the sliding process of the support frame 41, the limiting sleeve 40 limits the sliding stroke of the left and right support frames 41, positions the center of the fabric, and ensures that the fabric is accurately aligned with the flame position of the burner 8 and the temperature measurement center of the copper plate calorimeter 7. When the fabric is fully stretched and the tension continues to rise to the preset threshold of the damping bearing 44, the fabric tension overcomes the damping friction, and the damping bearing 44 enters a slipping and unloading state. The take-up wheel 43 no longer rigidly rotates with the drive shaft 45, but instead adapts to slippage with the fabric tension, continuously outputting a constant and stable damping tension. In the subsequent high-temperature burning and dynamic reciprocating bending of the fabric, this constant tension can continuously offset the deformation deviation caused by the fabric's high-temperature softening, thermal shrinkage, and thermal relaxation, so that the fabric always maintains a flat and taut standard testing posture, completely solving the defects of traditional testing fabrics that become loose, disordered in posture, and drifting of the testing benchmark when heated.

[0023] Please see Figures 2-6The same-speed drive assembly 46 includes an outer support 461 symmetrically mounted on the outer wall of the detection chamber 1. A tensioning wheel 462 is rotatably connected to the outer support 461, and a drive belt 463 is wound around the tensioning wheel 462. The tensioning wheel 462 tensions and limits the drive belt 463 to ensure stable transmission and prevent slippage. A drive shaft 45 is rotatably connected to a support base 464, which is fixed to the detection chamber 1, providing stable rotational support for the drive shaft 45. A connecting wheel 465 is fixedly sleeved on the drive shaft 45, and the drive belt 463 is wound around the connecting wheel 465. One of the drive shafts 45... The output end of the fixed drive motor 466 is fixed on the detection chamber 1. The output torque of the drive motor 466 drives the single-sided drive shaft 45 to rotate. Through the linkage transmission of the connecting wheel 465, the drive belt 463 and the tension wheel 462, the two drive shafts 45 rotate synchronously and at the same speed, ensuring that the traction and clamping actions on both sides are completely symmetrical. When the same speed drive component 46 is working, the single-sided drive motor 466 is the only active power source. Through the closed-loop belt transmission structure, the two drive shafts 45 are completely synchronized, at the same speed and in the same direction, eliminating the deviation of the actions of the two-sided mechanism.

[0024] Please see Figure 3 and Figures 5-7The bending clamping mechanism 5 includes a drive frame 51 slidably connected to a support frame 41. Multiple push rods 52 are slidably connected in a slide rail on the drive frame 51. Each push rod 52 is rotatably connected to two symmetrically distributed folding plates 53. A fixing component 55 is provided on each folding plate 53 to lock and fix the end of the fabric, preventing slippage and loosening during testing. With multiple sets of folding plates 53, the fabric can be clamped in segments at multiple points, simulating the multi-segment force state during clothing wear. A fixing post 54 is rotatably connected to the end of the folding plate 53 away from the push rod 52. One fixing post 54 is fixed to the support frame 41 to form a fixed hinge fulcrum, while the other fixing posts 54... All are slidably connected in the grooves opened on the support frame 41, allowing the folding plates 53 to rotate and slide relative to the support frame 41 to complete the bending action. The support frame 41 is provided with side supports 56 to limit the bending direction of the folding plates 53. The side supports 56 limit the bending trajectory of the folding plates 53 to ensure uniform bending angle and neat forming. The support frame 41 is provided with a return spring 57. One end of the return spring 57 is fixedly connected to the fixing ring of the drive frame 51, and the other end of the return spring 57 is fixed to the support frame 41. It can automatically return the drive frame 51 when it is not under force, so that multiple sets of folding plates 53 are all attached to the side supports 56, and the fabric wrinkles are removed. A follower mechanism 58 connected to the drive shaft 45 is installed on the frame 51. This mechanism allows for passive linkage during pleating, relying on the rotational power of the drive shaft 45, without requiring an additional power source. When the follower mechanism 58 pushes the drive frame 51 forward, the drive frame 51 drives multiple sets of push rods 52 to move synchronously. The push rods 52 pull the symmetrically arranged folding plates 53 on both sides. The folding plates 53 rotate and bend around the fixed column 54 fixed to the support frame 41. The slidable fixed column 54 on the other side adaptively and finely slides along the slide groove of the support frame 41. Combined with the unidirectional bending limit of the side support 56, this ensures that each set of folding plates 53 maintains a uniform bending angle and a uniform bending trajectory, resulting in a smooth surface. The entire fabric forms continuous, uniform, and regular V-shaped simulated wearing folds, eliminating the problems of messy folds and inconsistent deformation. During this process, the drive frame 51 slides and stretches the return spring 57, allowing the return spring 57 to store elastic potential energy. When the push stroke of the follower mechanism 58 ends, the drive frame 51 is no longer subjected to the push force, the return spring 57 releases the stored energy, pulls the drive frame 51 to quickly reverse and reset, driving the push rod 52 to retract. After the folding plate 53 loses its pulling force, it automatically rotates and resets, fitting the side support 56, and the fabric returns to a flat state. The equipment can achieve uninterrupted cyclic fold changes by continuous operation, simulating real dynamic working conditions and greatly improving the authenticity of high temperature resistance testing.

[0025] Please see Figures 5-7The fixing component 55 includes a first support block 551 fixed on the folding plate 53, a second support block 552 slidably connected to the first support block 551, and a clamping screw 553 threadedly connected to the second support block 552. The end of the clamping screw 553 is rotatably connected to the first support block 551. By rotating the clamping screw 553, the second support block 552 can be pushed to slide and clamp relative to the first support block 551, so as to achieve stable clamping and fixing of the fabric end. It is easy to assemble and disassemble, and the clamping is firm. It can be adapted to workwear fabrics of different thicknesses.

[0026] Please see Figure 3 and Figures 5-7 The follower mechanism 58 includes a push plate 581 fixed on the drive frame 51, a push column 582 abutting against the push plate 581, the push column 582 being eccentrically fixed on the rotating disk 583, and the rotating disk 583 being rotatably connected to the detection chamber 1; the eccentrically arranged push column 582 can rotate with the rotating disk 583 to form a reciprocating pushing action; a bevel gear A584 is fixed on the rotating disk 583, the bevel gear A584 meshing with the bevel gear B585, and the bevel gear B585 is fixedly sleeved on the drive shaft 45; when the drive shaft 45 rotates, the rotating disk 583 is driven to rotate at a uniform speed through the meshing transmission of the bevel gear B585 and the bevel gear A584, realizing the clamping and bending action. Synchronous linkage with the tensioning action; the drive shaft 45 rotates, driving the fixed bevel gear B585 to rotate synchronously, driving the bevel gear A584 to rotate at a constant speed through vertical meshing transmission, which in turn drives the rotating disk 583 fixed to the bevel gear A584 to rotate continuously in a circular motion; the push column 582, which is eccentrically fixed to the end face of the rotating disk 583, moves eccentrically in a circular motion with the rotating disk 583, forming a reciprocating pushing trajectory with a fixed period and fixed stroke; when the push column 582 rotates to the high position, it gradually presses against the push plate 581 to achieve smooth pushing feed; when the push column 582 rotates to completely disengage from the push plate 581, the pushing restriction is released; achieving a standardized and repeatable dynamic fold simulation effect.

[0027] It should be noted that when using this high-temperature resistance testing device for work clothes, first open the closed door panel 9 on the external support 2, clamp and fix the work clothes fabric to be tested in sections on the fixing components 55 of the two side folding plates 53, tighten the clamping screws 553 to clamp the ends of the fabric with the first support block 551 and the second support block 552 to ensure that each section of fabric is stably fixed. After clamping, close the closed door panel 9 to form a sealed testing chamber inside the testing chamber 1, and start the whole machine testing program through the control panel 11. After startup, the drive motor 466 operates, driving the single-sided drive shaft 45 to rotate. Under the synchronous transmission of the drive belt 463, tension wheel 462, and connecting wheel 465, the drive shafts 45 on both sides of the detection chamber 1 maintain the same speed and direction of rotation. The drive shaft 45 drives the winding wheel 43 to rotate synchronously. The initial damping bearing 44 provides damping locking force, causing the winding wheel 43 to rotate rigidly with the drive shaft 45, winding up the traction steel rope 42. The traction steel rope 42 pulls the support frame 41 to slide along the side wall of the detection chamber 1, performing initial tensioning on the clamped workwear fabric. When the fabric tension reaches the preset threshold of the damping bearing 44, the damping bearing 44 slips relative to the fabric, and the take-up wheel 43 no longer rotates rigidly with the drive shaft 45. Instead, it continuously outputs a constant damping force, so that the fabric always maintains a constant tension during the high-temperature test. This effectively prevents the fabric from relaxing, shrinking, wrinkling, or deforming due to heat, and eliminates deviations in test data caused by inconsistent fabric posture. At the same time, it ensures that the distance between the fabric and the copper calorimeter 7 is always uniform, ensuring the consistency and comparability of multiple sets of test data. While the drive shaft 45 rotates for tension adjustment, the drive shaft 45 drives the bevel gear B585 to rotate synchronously. The bevel gear B585 meshes with and drives the bevel gear A584 to rotate, which in turn drives the rotating disk 583 to rotate at a constant speed. The rotating disk 583 drives the eccentrically fixed push column 582 to perform a circular motion. The push column 582 gradually abuts against and pushes the push plate 581, causing the push plate 581 to drive the drive frame 51 to slide along the support frame 41. During the sliding process, the return spring 57 is stretched to store energy. The drive frame 51 synchronously drives multiple push rods 52 to move. The push rods 52 pull the symmetrically arranged folding plates 53, and the folding plates 53 are fixed in a fixed position. The column 54 rotates as a fulcrum, while the other fixed column 54 slides along the groove of the support frame 41. In conjunction with the directional limit of the side support 56, multiple sets of folding plates 53 bend synchronously, stretching the flat fabric into a uniform and regular V-shaped pleated structure. As the drive shaft 45 continues to rotate, the column 582 is pushed to gradually detach from the push plate 581. The drive frame 51 returns to its position under the elastic force of the return spring 57, and the fabric returns to flatness again. Thus, the process of fabric tension and pleat transformation simulates the natural pleats and fit of the work clothes under wearing conditions, solving the problem of large differences between traditional flat-lay testing and actual wearing conditions, and poor reference value of test results. During the process of fabric tensioning and pleating, the burner 8 on the outside of the testing chamber 1 is activated. The burner 8 continuously outputs a high-temperature heat source into the testing chamber 1 through the through hole to test the fabric for high-temperature burning resistance and heat radiation. During the test, the sensing unit 3 on the inner wall of the testing chamber 1 collects temperature changes and fabric thermal deformation data in real time. The copper plate calorimeter 7 on the support plate 6 accurately detects the amount of heat conduction through the fabric and comprehensively judges the high-temperature resistance and heat insulation protection performance of the workwear fabric.

[0028] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A high-temperature resistance testing device for work clothes, comprising a testing chamber (1), characterized in that: The inner wall of the detection chamber (1) is fixed with a sensing detection unit (3), and the detection chamber (1) is provided with a constant force tensioning mechanism (4); the constant force tensioning mechanism (4) includes a support frame (41) that slides through the two side walls of the detection chamber (1), a bending clamping mechanism (5) is provided on the support frame (41), a traction steel rope (42) is fixed on the support frame (41), a limiting sleeve (40) is provided on the side wall of the detection chamber (1) to limit the movement range of the support frame (41), one end of the traction steel rope (42) passes through the side wall of the detection chamber (1) and is fixed on the winding wheel (43), the winding wheel (43) is mounted on the drive shaft (45) through a damping bearing (44), and the drive shaft (45) is connected to the same speed drive assembly (46); a burner (8) is fixed on the outside of the detection chamber (1), and a through hole is opened at the position of the detection chamber (1) corresponding to the burner (8).

2. The high-temperature resistance testing device for work clothes according to claim 1, characterized in that: The same speed drive assembly (46) includes an outer support (461) symmetrically installed on the outer wall of the detection chamber (1), a tension wheel (462) rotatably connected to the outer support (461), and a drive belt (463) wound around the tension wheel (462).

3. The high-temperature resistance testing device for work clothes according to claim 2, characterized in that: The drive shaft (45) is rotatably connected to the support base (464), the support base (464) is fixed on the detection chamber (1), the drive shaft (45) is fixedly fitted with a connecting wheel (465), the drive belt (463) is wound around the connecting wheel (465), one of the drive shafts (45) is fixedly connected to the output end of the drive motor (466), and the drive motor (466) is fixed on the detection chamber (1).

4. The high-temperature resistance testing device for work clothes according to claim 3, characterized in that: The bending clamping mechanism (5) includes a drive frame (51) slidably connected to the support frame (41). Multiple push rods (52) are slidably connected in the slide rails provided on the drive frame (51). Two symmetrically distributed folding plates (53) are rotatably connected to each push rod (52). A fixing component (55) is provided on the folding plate (53). A fixing column (54) is rotatably connected to one end of the folding plate (53) away from the push rod (52). One of the fixing columns (54) is fixed on the support frame (41), and the other fixing columns (54) are slidably connected in the slide grooves opened on the support frame (41).

5. The high-temperature resistance testing device for work clothes according to claim 4, characterized in that: The fixing component (55) includes a first support block (551) fixed on the folding plate (53), a second support block (552) slidably connected to the first support block (551), a clamping screw (553) threadedly connected to the second support block (552), and the end of the clamping screw (553) rotatably connected to the first support block (551).

6. The high-temperature resistance testing device for work clothes according to claim 5, characterized in that: The support frame (41) is provided with a side support (56) that restricts the bending direction of the folding plate (53). The support frame (41) is provided with a return spring (57). One end of the return spring (57) is fixedly connected to the fixed ring of the drive frame (51). The drive frame (51) is provided with a follower mechanism (58) that connects to the drive shaft (45).

7. The high-temperature resistance testing device for work clothes according to claim 6, characterized in that: The follower mechanism (58) includes a push plate (581) fixed on the drive frame (51), a push column (582) abutting on the push plate (581), the push column (582) being eccentrically fixed on the rotating disk (583), and the rotating disk (583) being rotatably connected to the detection chamber (1).

8. The high-temperature resistance testing device for work clothes according to claim 7, characterized in that: A bevel gear A (584) is fixed on the rotating disk (583), and bevel gear A (584) meshes with bevel gear B (585). Bevel gear B (585) is fixedly sleeved on the drive shaft (45).

9. The high-temperature resistance testing device for work clothes according to claim 1, characterized in that: The detection chamber (1) is rotatably connected to a support plate (6), and a copper plate calorimeter (7) is installed on the support plate (6).

10. A high-temperature resistance testing device for work clothes according to claim 1, characterized in that: The testing chamber (1) is fixed on the external support (2). The external support (2) is rotatably connected to the closed door panel (9) near the testing chamber (1). An inspection door (10) is provided on the side of the external support (2) away from the closed door panel (9). A control panel (11) is provided on the external support (2).

Images