Firefighting protective clothing and trousers with SRD system

Abstract

A fire-fighting protective suit trousers with an SRD system includes a main body of fire-fighting trousers. Leg loops are located on both legs above the knee. A main attachment point loop is detachably threaded onto the waistband of the main body of the fire-fighting trousers. "Detachable" here means that the main attachment point loop can be pre-installed (i.e., pre-installed with the waistband) or installed on-site (i.e., immediately installed using a buckle or similar structure). The leg loops are located between the functional layer and the comfort layer of the main body of the fire-fighting trousers. Two leg loops are connected by a leg loop connecting strap, which extends from the base of the trouser legs and passes through the main attachment point loop at the crotch area of ​​the main body of the fire-fighting trousers. According to this invention, when wearing the full fire-fighting suit, the waistband is concealed by the hem of the top, thus not affecting the heat insulation capability of the fire-fighting suit. The SRD system inside the fire-fighting trousers, located between the functional layer and the comfort layer, also does not affect the heat insulation capability of the fire-fighting suit.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection equipment technology, and specifically relates to a fire-fighting protective suit and trousers with a Self-Rescue Device (SRD) system. It is particularly suitable for firefighters who need to quickly escape by rope when the retreat passage is blocked by fire in building fire scenarios, or as a safety guarantee for high-altitude operations. Background Technology

[0002] For fire rescue operations in factories and other buildings, ensuring the safety of firefighters and other rescue personnel is paramount. Protective clothing is essential equipment for firefighters. Besides fireproofing and heat insulation, it also needs to have a certain load-bearing capacity. Especially when engaging in firefighting inside mid- to high-rise buildings, where retreat routes are interrupted and alternative routes need to be found, or when working at heights (using ladder trucks, roof breaching, ladder work, etc.), the use of escape descent packs is crucial. Therefore, suitable external attachment structures are required, and these packs should not interfere with regular operations when not in use.

[0003] Existing protective suits typically only come with an external waist belt for attachment, which weakens the heat insulation capabilities of firefighting suits in some scenarios. Furthermore, existing waist belts rely solely on the waist to bear the load, primarily for safety purposes. For firefighters wearing self-contained breathing apparatus, using them as ropes for escape would place an immense strain on their waist. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a fire-fighting protective suit and pants with an SRD system, so as to solve the problems of existing equipment affecting the heat insulation of protective suits and pants and unreasonable stress distribution.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A fire-fighting protective suit trousers with an SRD system includes a fire-fighting trouser body. Leg loops are provided on both trouser legs above the knee. A main attachment point loop is detachably threaded onto the waistband of the fire-fighting trouser body. Here, "detachable" means that the main attachment point loop can be prefabricated, that is, prefabricated with the waistband in advance, or it can be attached on-site, that is, immediately attached by means of a buckle or other structure.

[0006] The leg loops are located between the functional layer and the comfort layer of the fire extinguishing pants body. The two leg loops are connected by a leg loop connecting strap. The leg loop connecting strap extends from the bottom of the pant leg and passes through the main hanging point loop at the crotch of the fire extinguishing pants body.

[0007] According to this invention, when wearing a full fire-fighting suit, the waist belt is concealed by the hem of the top, thus not affecting the suit's heat insulation capabilities. Similarly, the SRD system inside the fire-fighting pants, located between the functional and comfort layers, also does not affect the suit's heat insulation performance.

[0008] In one embodiment, a number of woven hanging loops are sewn between the functional layer and the comfort layer of the fire extinguishing pants body. The woven hanging loops are vertical structures located between the leg loop flat straps and the base of the pants legs, and are nested with the leg loop flat straps.

[0009] In one embodiment, a shuttle hole is provided at the base of the trouser leg for the leg loop connecting strap to pass through.

[0010] In one embodiment, the front door of the fire extinguishing pants body is a segmented front door, divided into upper and lower parts. The segment is flush with the horizontal line of the inner ring of the pants loop. The lower part uses a high-temperature resistant engineering plastic zipper and Velcro for opening and closing, while the upper part is only glued with Velcro. The staggered interval at the segment is used for the main hanging point flat belt loop to pre-connect the waist belt load-bearing hanging point.

[0011] In one embodiment, the fire extinguishing pants body also includes a padded back strap and a chest strap. The padded back strap is a thickened and widened anti-abrasion and comfortable shoulder and neck padded back strap, with four front and rear tightening straps connected to the waist of the fire extinguishing pants body. The chest strap is an adjustable sewn chest strap, which is connected to the padded back strap by a plastic buckle.

[0012] In one embodiment, the main attachment point flat belt loop body is made of pure aramid with at least three loops of closed-loop multi-layer cross stitching, and its stress state can concentrate the waist belt load-bearing attachment point and leg loop connecting belt on the pure aramid waist belt at the same height; the leg loop connecting belt is made of aramid material, sewn between the two leg loop flat belts, with the end located between the comfort layer and the functional layer, and after passing through the shuttle hole, the middle part is located outside the main body of the fire extinguishing pants.

[0013] In one embodiment, a leg ring comfort pad is provided on the inner side of the leg ring flat strap. The leg ring comfort pad is made of breathable soft padding and is woven together with the fire-retardant woven leg ring flat strap, and is located between the comfort layer and the functional layer. The leg ring flat strap is woven with aramid material and sewn to the leg ring connecting strap.

[0014] In one embodiment, a limiting band is sewn in the middle of the leg ring connecting band, and a through hole is formed between the limiting band and the leg ring connecting band at the sewing point. The main hanging point flat band loop passes through the through hole and is in a central position to limit the range of motion.

[0015] In one embodiment, the belt has a detachable G-buckle limiting strap, which consists of a metal G-buckle and a connecting strap. The G-buckle has an anti-detachment hook, and the width of the G-buckle matches the width of the connecting strap. It is used to lock and limit the belt in the pre-connected state between the belt and the main attachment point flat belt loop.

[0016] In one embodiment, the portion of the belt between the connection point with the detachable G-buckle limiting strap is the belt load-bearing hanging point. The belt load-bearing hanging point is sewn with an anti-abrasion pad. The anti-abrasion pad is made of Dyneema abrasion-resistant material and wraps around the belt. The left and right seams are for sewing the pad and the detachable G-buckle limiting strap at the same time, and the cross lines are for fixing the anti-abrasion pad.

[0017] Compared to existing technologies, this invention designs the leg loop webbing between the functional layer and the comfort layer, connecting it to the main attachment point webbing loop on the outside of the trousers, forming the main body of the SRD system. On one hand, the SRD system can be used in conjunction with the pre-connected waist belt and the protective clothing trousers for simultaneous dressing and undressing, improving dressing efficiency. On the other hand, since the leg loop webbing is located between the functional and comfort layers, the force applied to the leg loops during use only compresses the comfort layer and does not affect the insulation of the functional layer (because air has the lowest thermal conductivity, it implicitly improves insulation performance). The main attachment point webbing loop connects to the waist belt externally and is entirely concealed by the hem of the fire-fighting protective clothing upper, thus also not affecting the insulation performance of the protective clothing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model (front view, perspective effect).

[0019] Figure 2 This is a schematic diagram of the structure of this utility model (rear view, perspective effect).

[0020] Figure 3 This is a schematic diagram of the main structure of the SDR system of this utility model.

[0021] Figure 4 This is a schematic diagram (front view) of the belt structure of this utility model.

[0022] Figure 5 This is a schematic diagram (rear view) of the belt structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the metal G-buckle structure of the detachable G-buckle limiting band of this utility model. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below with reference to the accompanying drawings and examples.

[0025] In fire and rescue operations, the SRD system serves two main purposes. First, when used with a personal escape kit, the front attachment point allows for rapid evacuation from life-threatening environments. During use, the leg straps and quick-release waist belt distribute pressure, conforming to ergonomic principles and reducing concentrated stress on the lower back. Second, when used with the personal escape kit, it provides adjustable limit protection during high-altitude operations, and can also be used for other purposes.

[0026] In this invention, the fire-fighting protective suit and the SRD system are integrated into a single design, specifically, as shown in... Figure 1 , Figure 2 and Figure 3 As shown, the fire-fighting protective trousers of this utility model, which include an SRD system, have leg loops 12 located on both legs above the knee of the main body 22 of the fire-fighting trousers. A main attachment point loop 11 is threaded onto the waistband 18 of the main body 22. The leg loops 12 are designed between the functional layer and the comfort layer 5 of the main body 22 of the fire-fighting trousers, and the two leg loops 12 are connected by a leg loop connecting strap 15. The leg loop connecting strap 15 extends from the base of the trouser legs, meaning the middle part of the leg loop connecting strap 15 is outside the main body 22 of the fire-fighting trousers. The extended part passes through the main attachment point loop 11 at the crotch area of ​​the main body 22 of the fire-fighting trousers, forming a connection and constituting the main part of the SRD system.

[0027] Based on the above structure, this invention forms an SRD system with leg support to distribute pressure on the waist. The leg loop structure is designed between the functional and comfort layers of the fire-fighting protective suit trousers, while the waist belt structure is concealed by the hem of the upper garment. The main body of the SRD system is not only protected by the functional layer but also creates more air gaps within the fire-fighting protective suit trousers, reducing heat conduction. Using the aforementioned leg loop flat strap 12 as an embedded leg loop, and the leg loop connecting strap 15 pre-connected to the main attachment point flat strap loop 11 with a quick-connect waist belt 18, a half-body safety harness can be assembled. Combined with a "personal escape pack," it enables safe and proactive self-rescue.

[0028] In this utility model, the "personal escape kit" is existing equipment and is common knowledge in the field.

[0029] In a further structural design of this utility model, a thickened soft support 1 is provided at the back waist of the fire extinguishing pants body 22. The thickened soft support 1 adopts multi-layer sewn soft support, which improves the force coverage of the pure aramid waist belt 18, increases comfort, and makes the force more even when used with the "personal escape pack".

[0030] In a further structural design of this utility model, five securely positioned aramid loops 2 are provided on the outer side of the waist of the fire extinguishing pants body 22. The aramid loops 2 are located around the waist of the fire extinguishing pants and are used for wearing the waist belt 18. Figure 2 In the rear view, you can see one centered and one symmetrically placed on the left and right. Figure 1 The leftmost item in the front view is close to the front door 6, and the rightmost item is the trouser loop located 15cm to the right of the front door 6, so that the quick buckle is located to the right of the front door 6 after wearing, and the waist belt load-bearing point is located directly in front of the front door 6.

[0031] In a further structural design of this utility model, several woven hanging loops 3 are sewn between the functional layer and the comfort layer 5 of the fire extinguishing pants body 22, for example, six, and are specifically sewn into the comfort layer 5. The woven hanging loops 3 are vertical structures, located between the leg loop flat strap 12 and the root of the pant leg, and nested with the leg loop flat strap 12. They are used to limit the leg loop flat strap 12 and restrict its downward movement in a slack state. The woven hanging loops 3 can ensure that they do not affect actions such as raising the knee, squatting, and running. In an emergency escape, the leg loop flat strap 12 can still move upward with the force of the main attachment point flat strap ring 11.

[0032] In a further structural design of this utility model, a shuttle hole 4 is provided at the base of the leg of the fire extinguishing pants body 22, located between the front opening 6 and the crotch area of ​​the fire extinguishing pants body 22, close to the lower part of the front opening 6, for the leg loop connecting strap 15 to pass through. The diameter of the shuttle hole 4 is the thickness of the leg loop connecting strap 15, and one is provided on each of the two legs, with a partition in the middle to prevent the main attachment point flat strap ring 11 from falling into the interlayer of the fire extinguishing suit. The area around the comfort layer 5 can be reinforced with strong horsepower material for tear resistance and abrasion prevention. After passing through the shuttle hole 4, the leg loop connecting strap 15 connects to the external main attachment point flat strap ring 11.

[0033] In a further structural design of this utility model, the fabric of the fire extinguishing pants body 22 meets mandatory standard requirements and has a comfort layer 5, a heat insulation layer, a waterproof layer, and an outer layer, with the comfort layer 5 being the innermost layer. The heat insulation layer, waterproof layer, and outer layer are the main components of the functional layers.

[0034] In a further structural design of this utility model, the front door 6 of the fire extinguishing pants body 22 is a segmented front door, divided into upper and lower parts. The segment is flush with the horizontal line of the inner ring of the pants loop, which conforms to the physiological structural characteristics as a conventional front door. The lower part uses a high-temperature resistant engineering plastic zipper and Velcro for opening and closing, while the upper part is only glued with Velcro. The staggered interval at the segment is used for the main hanging point flat belt loop 11 to pre-connect the waist belt load-bearing hanging point 21 of the waist belt 18.

[0035] In a further structural design of this utility model, the main body 22 of the fire extinguishing pants also includes a padded back strap 7. The padded back strap 7 is a thickened and widened anti-abrasion and comfortable shoulder and neck padded back strap. The four front and rear tightening straps are connected to the waist of the main body 22 of the fire extinguishing pants, which facilitates the quick wearing of the fire extinguishing protective clothing pants with the SRD system of this utility model.

[0036] In a further structural design of this utility model, the main body 22 of the fire extinguishing pants also includes a chest strap 8. The chest strap 8 is an adjustable sewn chest strap, which is connected to the padded back strap 7 via a plastic buckle. It is used to tighten the padded back strap 7 to prevent the back strap from slipping off the shoulders. When the quick-release waistband of this design is adjusted to a suitable tightness, even if the pants pockets are full, there will be no slipping off the shoulders. The chest strap 8 only serves as a preventative measure, improving the fit and comfort.

[0037] In a further structural design of this utility model, the main body 22 of the fire extinguishing pants also includes a three-dimensional extension 9 for easy knee lifting. The three-dimensional extension 9, like other parts, is a multi-layer design, similar to the three-dimensional cut of the armpit of a T-shirt. It is located at the top of the knee reinforcement and anti-abrasion 10. It mainly solves the problem that when firefighters are climbing stairs or running, the friction between the comfort layer 5 and the bending part of the leg is too great, which affects the range of knee lifting, reduces the range of motion, and consumes excess energy.

[0038] In a further structural design of this utility model, the main body 22 of the fire extinguishing pants also includes a knee reinforcement and abrasion protection 10. The knee reinforcement and abrasion protection 10 is made of non-absorbent, abrasion-resistant and tear-resistant material that surrounds the knee for knee protection in different postures.

[0039] The main attachment point flat strap loop 11 is a key structural element of this invention. In a further structural design of this utility model, its main body is made of pure aramid fiber with at least three loops of closed-loop multi-layer cross-stitching. The recommended folded length is 30 cm, width is 3 cm, and thickness is 0.6 cm. The main attachment point flat strap loop 11 is used to connect the descent device of the "personal escape pack". Under stress, it can concentrate the load-bearing attachment point 21 on the waist belt 18 and the leg loop connecting strap 15 at the same height, so as to achieve the purpose of sharing the stress between the waist and legs. A part of the main attachment point flat strap loop 11 is located outside the pants.

[0040] In a further structural design of this utility model, the leg ring flat strap 12 is woven from aramid material, which has good fire-retardant properties, such as... Figure 3 As shown, it is sewn together with the leg loop connecting strap 15 and plays the main load-bearing role. The inner side can be designed with leg loop comfort pads 13 to improve comfort. The size of the leg loop flat strap 12 depends on the leg circumference of each size of the fire extinguishing suit.

[0041] In a further structural design of this utility model, the leg ring comfort pad 13 is made of a comfortable and breathable soft pad and is woven together with the fireproof braided leg ring flat strap 12 to increase the force-bearing area of ​​the legs. The leg ring comfort pad 13 and the fireproof braided leg ring flat strap 12 are located together between the comfort layer 5 and the functional layer.

[0042] In a further structural design of this utility model, a limiting band 14 is sewn in the middle of the leg ring connecting band 15. The limiting band 14 is a strip-shaped structure parallel to the leg ring connecting band 15. It is relatively short and its two ends are sewn together with the leg ring connecting band 15, thereby forming a through hole between the sewing points at both ends. The main hanging point flat band ring 11 passes through the through hole and is in the center position, restricting the range of motion.

[0043] In a further structural design of this utility model, the leg loop connecting strap 15 is made of aramid material and is sewn between the two leg loop flat straps 12. The recommended size is 3CM wide and 30CM long. The end is located between the comfort layer 5 and the functional layer. After passing through the shuttle hole 4, the middle part is located outside the main body 22 of the fire extinguishing pants and is strung together with the main hanging point flat strap loop 11.

[0044] In a further structural design of this utility model, an anti-abrasion pad 16 is also included. The anti-abrasion pad 16 is made of Dyneema material and is sewn around the leg ring connecting belt 15 and the limiting belt 14 at the same time to increase the service life of the leg ring connecting belt 15 and the main hanging point flat belt ring 11.

[0045] In further structural designs of this utility model, such as Figure 4 , Figure 5 As shown, a detachable G-buckle retaining strap 17, which is sewn onto the waist belt 18 and consists of a metal G-buckle and a connecting strap, is sewn onto the waist belt 18. Figure 6 As shown, the G-buckle has an anti-detachment hook, and its width matches the connecting strap. It is used to lock and limit the connection between the waist belt 18 and the main attachment point flat strap loop 11 in the pre-connected state. During use, the waist belt 18 needs to be bent to connect the G-buckle to the connecting strap. The waist belt 18's own flexibility prevents the G-buckle from easily detaching, while also allowing for quick disassembly. Even when the finished quick-connect lock 20 is not locked, it ensures that the main attachment point flat strap loop 11 remains connected to the waist belt 18, allowing for immediate attachment and evacuation in emergencies.

[0046] In a further structural design of this utility model, the belt 18 is made of pure aramid webbing and pure aramid thread, with three layers stacked together. The inner layer has soft support, the innermost layer is a single-sided Velcro, and the outermost layer has laser-cut hanging points. The single-sided Velcro is used in conjunction with a Velcro inner belt when the belt 18 is worn with other clothing. The belt 18 is available in lengths of S, M, L, XL, XXL, and special sizes, and in widths of 45mm and 38mm. The tightness is adjusted by threading the belt through a pre-made quick-release lock 20, and the end is locked with Velcro. The laser-cut hanging points can be used with a recessed equipment bag to store personal tools such as wire cutters, detectors, gloves, axes, doorstops, lamps, and other equipment.

[0047] In a further structural design of this utility model, the finished lock D-ring hanging point 19 on the belt 18 is used as a limiting hanging point or combined with similar leg rings to derive other functions, and is integrated with the finished quick-connect lock 20.

[0048] In a further structural design of this utility model, the finished quick-connect lock 20 is used to connect and lock the belt 18. The whole conforms to the XF11511 standard test and adopts the D-ring metal cobra quick-connect buckle that conforms to international certification. The main body is 15kN and the D-ring hanging point is 1922kN.

[0049] In a further structural design of this utility model, the belt load-bearing attachment point 21 is the portion between the two connection points on the belt 18 and the detachable G-buckle limiting strap 17. An anti-abrasion pad is sewn onto the belt load-bearing attachment point 21. The anti-abrasion pad is made of Dyneema abrasion-resistant material, wrapping around the belt 18 to enhance its service life. A recommended length is 11 cm. The left and right seams are sewn simultaneously with the pad and the detachable G-buckle limiting strap 17, restricting the range of motion of the connectors on the detachable G-buckle limiting strap 17. The intersecting lines secure the anti-abrasion pad.

[0050] The belt structure of this utility model can avoid the air breathing apparatus and prevent jamming and overlapping. The belt 18 can be detached from the fire-fighting suit and used for other derivative uses such as rescue suits and relief suits.

[0051] In the further structural design of this utility model, the fire extinguishing pants body 22 has a specified reflective patch area ratio, and the overall material performance, reflective patch retroreflection coefficient, heat resistance performance, position and number of the clothing comply with mandatory national standards, including a comfort layer 5, a heat insulation layer, a waterproof layer and an outer layer.

[0052] In a further structural design of this utility model, the main body 22 of the fire extinguishing pants has an expansion pocket 23, which can hold a "personal escape pack" kit or accommodate a pure aramid rope with a length of 16M and a diameter of 8mm, a descent device, and a safety hook. The inside of the pocket is divided into layers, and all the equipment loaded inside is in a prefabricated state and can be pre-connected to the main attachment point flat strap ring 11.

[0053] How to use this utility model: 1. Climbing limit protection (the descent device is prefabricated and connected to the main attachment point flat belt ring 11).

[0054] Take out the anchor hook from the "personal escape kit", thread it around the anchor point of the climbing platform, and attach the anchor hook to the main attachment point flat belt ring 11 or the finished lock D ring attachment point 19 to form a closed loop. Use the descent device to adjust the limit length.

[0055] 2. Emergency self-rescue and escape (the descent device is prefabricated and connected to the main attachment point flat belt ring 11).

[0056] Take out the anchor hook from the "personal escape kit", find a suitable anchor point, make a sturdy anchor point, use the descent device to adjust the rope to the escape window, climb over the window platform, and slowly release the descent device until you reach a safe area.

Claims

1. A SRD system containing fire protection trousers, comprising a fire protection trouser body (22), characterized in that A leg loop flat strap (12) is provided on the two pant legs above the knee of the main body (22) of the fire extinguishing pants. A main hanging point flat strap loop (11) is detachably threaded onto the waist belt (18) of the main body (22). The leg loop flat strap (12) is located between the functional layer and the comfort layer (5) of the fire extinguishing pants body (22). The two leg loop flat straps (12) are connected by a leg loop connecting strap (15). The leg loop connecting strap (15) passes out from the bottom of the pants leg and passes through the main hanging point flat strap loop (11) at the crotch position of the fire extinguishing pants body (22).

2. The SRD system-containing fire-fighting protective trousers according to claim 1, characterized in that, Several woven hanging loops (3) are sewn between the functional layer and the comfort layer (5) of the main body (22) of the fire extinguishing pants. The woven hanging loops (3) are vertical structures located between the leg loop flat strap (12) and the root of the pants leg, and are nested with the leg loop flat strap (12).

3. The SRD system-containing fire-fighting protective trousers according to claim 1, characterized in that, The trouser leg has a shuttle hole (4) at the base for the leg ring connecting belt (15) to pass through.

4. The SRD system-containing fire-fighting protective trousers according to claim 1, characterized in that, The front door (6) of the main body (22) of the fire extinguishing pants is a segmented front door, divided into upper and lower parts. The segment is flush with the horizontal line of the inner ring of the pants loop. The lower part uses a high-temperature resistant engineering plastic zipper and Velcro for opening and closing, while the upper part only uses Velcro for adhesion. The staggered interval at the segment is used for the main hanging point flat belt loop (11) to pre-connect the waist belt (18) load-bearing hanging point (21).

5. The SRD system-containing fire-fighting protective trousers according to claim 1, characterized in that, The main body (22) of the fire extinguishing pants also includes a padded back strap (7) and a chest strap (8). The padded back strap (7) is a thickened and widened anti-wear comfortable shoulder and neck padded back strap, with four front and rear tightening straps connected to the waist of the main body (22) of the fire extinguishing pants. The chest strap (8) is an adjustable sewn chest strap, which is connected to the padded back strap (7) by a plastic buckle.

6. The SRD system-containing fire-fighting protective trousers according to claim 1, characterized in that, The main hanging point flat belt loop (11) is made of pure aramid with at least three loops of closed loop and multi-layer cross stitching. Its stress state can concentrate the waist belt load-bearing hanging point (21) and leg ring connecting belt (15) on the pure aramid waist belt (18) at the same height, and disperse the waist pressure. The leg ring connecting belt (15) is made of aramid material and is sewn between the two leg ring flat belts (12). Its end is located between the comfort layer (5) and the functional layer. After passing through the shuttle hole (4), its middle part is located outside the main body (22) of the fire extinguishing pants.

7. The SRD system-containing fire-fighting protective trousers according to claim 1, characterized in that, The inner side of the leg ring flat strap (12) is provided with a leg ring comfort pad (13). The leg ring comfort pad (13) is made of breathable soft pad and is woven together with the fireproof woven leg ring flat strap (12) and is located between the comfort layer (5) and the functional layer. The leg ring flat strap (12) is woven with aramid material and is sewn together with the leg ring connecting strap (15).

8. The SRD system-containing fire-fighting protective trousers according to claim 1, characterized in that, The leg ring connecting band (15) has a limiting band (14) sewn in the middle. The limiting band (14) and the leg ring connecting band (15) form a through hole between the sewing points. The main hanging point flat band ring (11) passes through the through hole and is in a central position to limit the range of motion.

9. The SRD system-containing fire-fighting protective trousers according to claim 1, characterized in that, The waist belt (18) has a detachable G buckle limiting band (17), which consists of a metal G buckle and a connecting band. The G buckle has an anti-detachment hook and the width of the G buckle matches the connecting band. It is used to lock and limit the waist belt (18) in the pre-connection state with the main hanging point flat belt loop (11).

10. The SRD system-containing fire-fighting protective trousers according to claim 9, characterized in that, The portion of the waist belt (18) between the connection point with the detachable G buckle limiting strap (17) is the waist belt load-bearing hanging point (21). The waist belt load-bearing hanging point (21) is sewn with abrasion-resistant pads. The abrasion-resistant pads are made of Dyneema abrasion-resistant material and wrap the waist belt (18). The left and right stitching lines are for sewing the pads and the detachable G buckle limiting strap (17) at the same time, and the cross lines are for fixing the abrasion-resistant pads.

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