CN115591147B - Anti-asphyxia safety belt for falling and use method of safety belt - Google Patents

Abstract

The application relates to a falling anti-asphyxia safety belt and a safety belt using method, wherein the falling anti-asphyxia safety belt comprises a safety belt body and at least two safety ropes, the two safety ropes are respectively connected with the safety belt body, the two safety ropes are hung on a high-altitude hanging point, when a worker falls, an included angle alpha is formed on the plane where the two safety ropes are located due to the fact that the two safety ropes are not located on the same vertical plane, when the worker is hung by the safety ropes after falling, the safety belt body is transversely or obliquely hung, the body is not overlapped with the vertical direction, the safety belt is not lifted to the chest part of the human body, and the problem that the falling worker breathes difficultly or even asphyxia death is avoided.

Description

Anti-asphyxia safety belt for falling and use method of safety belt

Technical Field

The application relates to the technical field of safety belts, in particular to a falling anti-asphyxia safety belt and a safety belt using method.

Background

The safety belt is individual protective equipment for preventing the worker from safely hanging the worker after falling down. The safety belt must be used correctly for the overhead work, which is not only a mandatory requirement of safety regulations, but also an effective life-saving measure for the overhead work of electric power workers.

At present, most high-altitude operators use a whole-body falling suspension safety belt, when the safety belt is used, the safety rope arranged on the safety belt is required to be suspended on a high-altitude suspension point, when the operators fall carelessly, the safety rope suspends a human body in the air, but simultaneously, due to the action of gravity, the human body can slide down, and meanwhile, the connecting part of the safety belt and the safety rope can be lifted to the chest part of the human body, so that the chest part of the human body is tightened, the breathing difficulty of the personnel is caused, and even the suffocation death of the personnel is caused.

Disclosure of Invention

Based on the above, it is necessary to provide a fall anti-asphyxia safety belt and a method for using the safety belt, aiming at the problem that the falling person is caught on the chest by the safety belt to cause dyspnea.

A fall anti-asphyxia harness comprising:

a seat belt body; and

the safety ropes at least comprise two safety ropes, the two safety ropes are respectively connected with the safety belt body, and the two safety ropes are respectively hung on high-altitude hanging points;

after an operator falls down, the plane where one safety rope is located is a first plane, the plane where the other safety rope is located is a second plane, and an included angle is formed between the first plane and the second plane.

In one embodiment, the fall anti-asphyxia harness further comprises:

one end of each safety rope is connected with the corresponding first safety buckle;

and the other ends of the two safety ropes are respectively connected with the second safety buckles.

In one embodiment, the safety line comprises:

the safety rope body is bound on the first safety buckle at one end;

the safety hook is arranged at the other end of the safety rope body and is buckled and connected with the second safety buckle.

In one embodiment, the seat belt body comprises:

waist support; and

the auxiliary protection belt is arranged above the waist support, and a connecting belt is arranged at the joint of the waist support and the auxiliary protection belt.

In one embodiment, the second safety buckles include at least two second safety buckles, and the two second safety buckles are disposed on the safety belt body at intervals along the length direction of the waist support.

In one embodiment, the auxiliary protecting belt comprises a leg belt, one end of the connecting belt is arranged on the leg belt, the other end of the connecting belt is arranged on the waist support, two first safety buckles are arranged on two sides of the waist support and/or the leg belt, and the second safety buckles are arranged on the front sides of the waist support and/or the connecting belt.

In one embodiment, the seat belt body further comprises:

the shoulder belt is positioned above the waist support, a first clamping ring is arranged on the front side of the shoulder belt, and a second clamping ring is arranged on the front side of the waist support and/or the leg belt;

chest knot, first snap ring with the second snap ring passes through chest knot lock is connected.

In one embodiment, the leg strap further comprises a reinforcing connection strap, one end of the reinforcing connection strap is tied to the second snap ring, and the other end of the reinforcing connection strap is fixedly arranged on the leg strap.

In one embodiment, the seat belt body further comprises: the back protection belt, the baldric rear side is provided with the third snap ring, waist support rear side is provided with the fourth snap ring, back protection belt one end tie up is located on the third snap ring, back protection belt other end tie up is located on the fourth snap ring.

The application also provides a safety belt using method, which comprises the following steps:

providing a seat belt body configured with at least two safety lines;

connecting the two safety ropes with the safety belt body respectively;

respectively hanging the two safety ropes on high-altitude hanging points;

when an operator falls, the plane where any one safety rope is located is a first plane, the plane where the other safety rope is located is a second plane, and an included angle is formed between the first plane and the second plane.

The anti-asphyxia safety belt comprises a safety belt body and at least two safety ropes, wherein the two safety ropes are respectively connected with the safety belt body when the anti-asphyxia safety belt is used, and are hung on a high-altitude hanging point.

Drawings

FIG. 1 is a directional usage pattern of fall arrest seat belts according to some embodiments of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a diagram showing another directional use effect of fall arrest seat belts according to some embodiments of the present application;

FIG. 4 is a schematic perspective view of a harness body with a safety line removed according to some embodiments of the present application;

FIG. 5 is an enlarged partial schematic view at B in FIG. 4;

FIG. 6 is an enlarged partial schematic view of FIG. 4 at C;

FIG. 7 is a schematic perspective view of a safety line according to some embodiments of the present application;

fig. 8 is a perspective view of a fall arrest harness according to some embodiments of the application.

Reference numerals:

10. a safety rope; 110. a safety rope body; 120. a safety hook; 130. an adjusting plate; 20. a seat belt body; 210. waist support; 2110. a second snap ring; 2120. a fourth snap ring; 220. leg bands; 2210. a connecting belt; 2220. reinforcing the connection strap; 230. a shoulder strap; 2310. a first snap ring; 2320. a third snap ring; 240. chest buckle; 250. a back protective belt; 30. a first safety catch; 40. a second safety buckle; 50. an operator; 60. a wire; alpha, the first plane and the second plane.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1 to 3, fig. 1 is a view illustrating a direction of use of a fall arrest harness according to some embodiments of the present application. Fig. 2 is a partial enlarged view of a portion a of fig. 1, and fig. 3 is a view showing another direction of use effect of the fall arrest harness according to some embodiments of the present application.

The application provides a falling anti-asphyxia safety belt, which comprises a safety belt body 20 and at least two safety ropes 10, wherein the two safety ropes 10 are respectively connected with the safety belt body 20, the two safety ropes 10 are respectively hung on high-altitude hanging points, after an operator 50 falls, an included angle alpha is formed between the plane of one safety rope 10 and the plane of the other safety rope 10, and the included angle alpha meets the following conditions: alpha is more than 0 and less than 90 degrees.

When the anti-asphyxia safety belt is used, the two safety ropes 10 are respectively connected with the safety belt body 20, compared with the single safety rope 10, the two safety ropes 10 can bear the pulling force of the pulling operator 50 at the same time, so that the limit of the pulling force borne by the safety ropes 10 is larger when the anti-asphyxia safety belt is used, and meanwhile, the borne pulling force of the two safety ropes 10 is more uniform, so that the service life of the safety ropes 10 is further prolonged; through with safety rope 10 lug connection on safety belt body 20 for safety belt body 20 and safety rope 10 can transport jointly, reduce the transportation cost of safety belt that falls anti-asphyxia, hang two safety ropes 10 on the overhead suspension point again, the overhead suspension point is often configured to arbitrary point on wire 60, also can be according to the actual use demand be configured to other can hang the object of safety rope 10 on one point, further, two safety ropes 10 hang on wire 60, its pressure that receives from wire 60 also can be less than the pressure that receives from wire 60 that a single safety rope 10 received, make safety rope 10 in daily use and personnel fall, wear and fracture are difficult to take place in the suspension position, when personnel 50 take place to fall, because two safety ropes 10 are not located the coplanar, so that the plane that two safety ropes 10 are located will form an contained angle alpha, make the safety belt body 20 and the personnel 50 can be transversely or hang the pressure that the personnel 50 received from wire 60, it can be less than the pressure that a single safety rope 10 received from wire 60, make the pressure that the personnel's receives from wire 60, make the chest side by side and the effect that the chest can not overlap to the time of falling, thereby the difficult to the part is not breathed down when the people is difficult to the current, and the people can not feel down to breathe down to the problem.

In one embodiment, the anti-asphyxia safety belt further comprises at least two first safety buckles 30 and at least one second safety buckle 40, one ends of the two safety ropes 10 are respectively connected with the two first safety buckles 30, and the other ends of the two safety ropes 10 are respectively connected with the second safety buckles 40.

Specifically, through respectively in first safety knot 30, second safety knot 40 connection with safety rope 10 both ends, not only can make safety rope 10 to carry out the dismouting more easily, also can make safety rope 10 maintain and change more convenient, further can also let be difficult to appear breaking and wearing and tearing in two safety ropes 10 when daily use, thereby protect operating personnel 50 to make it avoid falling to subaerial and lead to appearing the injury.

Referring to fig. 4 to 6, fig. 4 is a schematic perspective view illustrating a safety belt body 20 with a safety rope 10 removed according to some embodiments of the present application, fig. 5 is a schematic enlarged partial view at B in fig. 4, and fig. 6 is a schematic enlarged partial view at C in fig. 4.

In one embodiment, the safety belt body 20 includes a waist support 210 and an auxiliary protection belt, the waist support 210 is located above the auxiliary protection belt, and a connection belt 2210 is provided at the connection of the waist support 210 and the auxiliary protection belt.

Optionally, the auxiliary protection belt includes a leg belt 220, which is used to protect the lower portion of the operator 50, and may be configured as a pedal or other auxiliary strap according to actual use requirements. Specifically, the auxiliary protection belt is configured as the leg belt 220, and the connection belt 2210 may be fastened to the leg belt 220 and the waist support 210 in a manner of selectively fastening the safety buckle or directly binding.

Optionally, how to arrange the connection belt 2210 and how many connection belts 2210 are arranged can be designed according to practical requirements, and the application is not limited to this, specifically, two connection belts 2210 are respectively arranged at the front side and the rear side of the leg belt 220, so that after the leg belt 220 is connected with the waist support 210, the stress is more uniformly distributed on the whole waist support 210 and the whole leg belt 220, and is not easy to be broken.

In one embodiment, the second safety buckles 40 include at least two second safety buckles 40, and the two second safety buckles 40 are disposed on the safety belt body 20 at intervals along the length direction of the waist support 210.

Specifically, at least two second safety buckles 40 can be provided, and a plurality of second safety buckles 40 are provided, so that the effect of fixing the safety rope 10 is better compared with the effect of providing one second safety buckle 40, and simultaneously, the two second safety buckles 40 can share larger pulling force, so that the second safety buckles 40 are less prone to damage or fall when falling.

In one embodiment, the auxiliary protecting belt comprises a leg belt 220, a connecting belt 2210 is arranged on the leg belt 220 at one end, a waist support 210 at the other end, two first safety buckles 30 are arranged on two sides of the waist support 210 and/or the leg belt 220, and a second safety buckle 40 is arranged on the front side of the waist support 210 and/or the connecting belt 2210.

Specifically, the auxiliary protecting belt can be configured as a pedal or other auxiliary binding belt according to actual requirements, and the specific configuration of the auxiliary protecting belt can be designed according to actual use requirements, so that the application is not limited.

Alternatively, the two first safety buckles 30 may be selectively disposed on two sides of the waist support 210 or the leg strap 220, or the first safety buckles 30 may be disposed on the waist support 210 and the leg strap 220 respectively; preferably, the two first safety buckles 30 are disposed on two sides of the waist support 210, and the leg strap 220 is designed with consideration to the movement of the legs, so that the protection capability and the pulling resistance of the leg strap 220 are generally relatively weak, and therefore, the present application can better increase the installation strength of the first safety buckles 30 by disposing the two second safety buckles 40 on the waist support 210, so that the risk caused by falling off of the first safety buckles 30 is not easy to occur when the worker 50 falls.

More specifically, the two second safety buckles 40 may be selectively disposed on the front side of the waist support 210, the connection belt 2210, or the leg belt 220, or on the front side of any two of the leg belt 220, the connection belt 2210, and the waist support 210, specifically, the second safety buckles 40 are disposed at the connection position of the connection belt 2210 and the waist support 210, so that the pulling force on the second safety buckles 40 can be decomposed to the waist support 210 and the connection belt 2210, and when the worker 50 falls, the safety rope 10 pulls up the second safety buckles 40, and simultaneously pulls up the connection belt 2210 connected with the second safety buckles 40, so as to drive the leg belt 220, so that the worker 50 can keep a waiting state in a sitting posture, further reducing the physical power consumption of the worker 50 when falling, and reducing the rescue cost.

Referring to fig. 7 and 8, fig. 7 is a schematic perspective view of a safety rope 10 according to some embodiments of the present application, and fig. 8 is a perspective view of a fall arrest harness according to some embodiments of the present application.

In one embodiment, the safety rope 10 includes a safety rope body 110 and a safety hook 120, one end of the safety rope body 110 is tied to the first safety buckle 30, the other end of the safety rope 10 is provided with the safety hook 120, and the safety hook 120 is buckled with the second safety buckle 40.

Specifically, through binding safety rope body 110 one end to locate on the first safety knot 30, with safety hook 120 and second safety knot 40 lock are connected for safety rope 10 can be dismantled with safety belt body 20 and be connected, both can guarantee the installation strength of safety rope 10, also can make the safety belt more simple and convenient when using and maintaining, more specifically, safety rope 10 is configured as nylon safety rope, still is provided with article font regulating plate 130 on the safety rope 10 for adjust the length of safety rope 10, make safety rope 10 in the in-process of using, can adjust the length according to the in-service use demand, increased the commonality of anti-asphyxia safety belt falls.

Referring to fig. 4 and 5 again, in one embodiment, the safety belt body 20 further includes a shoulder strap 230 and a chest buckle 240, the shoulder strap 230 is located above the waist support 210, a first clamping ring 2310 is provided on the front side of the shoulder strap 230, a second clamping ring 2110 is provided on the front side of the waist support 210 and/or the leg strap 220, and the first clamping ring 2310 and the second clamping ring 2110 are buckled and connected through the chest buckle 240.

Specifically, the anti-asphyxia safety belt provided with the shoulder strap 230 can protect the shoulder from falling, optionally, a second clamping ring 2110 can be arranged on the front side of the waist support 210 or the leg strap 220, and a second clamping ring 2110 can be arranged on the front side of the waist support 210 and the leg strap 220, preferably, a first clamping ring 2310 is arranged on the front side of the shoulder strap 230, the second clamping ring 2110 is arranged on the waist support 210, and the first clamping ring 2310, the second clamping ring 2110 and the chest buckle 240 are fixedly connected, so that the connection part can not only give way to the chest, but also ensure enough connection strength on the premise of being convenient to wear, so that the anti-asphyxia safety belt can better protect the operator 50 when falling.

More specifically, when falling, the first and second snap rings 2310 and 2110 decompose pressure to the shoulder belt 230 and the waist support 210, so that the chest does not bear huge pressure, and simultaneously, the first and second snap rings 2310 and 2110 are connected through the chest buckle 240, so that the shoulder belt 230 can be more conveniently worn and removed by the operator 50 while ensuring the installation strength and the connection strength, so that the universality and the protection of the falling anti-asphyxia safety belt are stronger.

In one embodiment, leg strap 220 further includes a reinforcing attachment strap 2220, with one end of reinforcing attachment strap 2220 being tied to second snap ring 2110 and the other end being fixedly secured to leg strap 220.

Specifically, by reinforcing the connection strap 2220, not only can the installation strength of the leg strap 220 be further increased, so that the leg strap 220 is less likely to fall off, but also, by binding the reinforcing connection strap 2220 to the second snap ring 2110, the reinforcing connection strap 2220 can decompose pressure to the chest buckle 240, the shoulder strap 230, the waist support 210 and the leg strap 220 (i.e., on the entire seat belt body 20) when the worker 50 falls, so that the chest portion is not subjected to a great pressure, and further, the problem of choking the worker 50 due to the great pressure is avoided.

Referring to fig. 4 and 6 again, in one embodiment, the safety belt body 20 further includes a back protection belt 250, a third clamping ring 2320 is provided at the rear side of the shoulder belt 230, a fourth clamping ring 2120 is provided at the rear side of the waist support 210, one end of the back protection belt 250 is tied to the third clamping ring 2320, and the other end of the back protection belt 250 is tied to the fourth clamping ring 2120.

Specifically, by arranging the third snap ring 2320 at the rear side of the shoulder strap 230, arranging the fourth snap ring 2120 at the rear side of the waist support 210, and binding the back protecting belt 250 on the third snap ring 2320 and the fourth snap ring 2120, not only can the mounting strength of the shoulder strap 230 be increased, the shoulder strap 230 is less likely to fall off, but also the back of the operator 50 can be supported when falling, and further the operator 50 is more comfortable when waiting for rescue.

Referring to fig. 1 and 3 again, the present application further provides a method for using a safety belt, which includes the steps of providing a safety belt configured with at least two safety ropes 10, connecting the two safety ropes 10 with the safety belt, respectively, hanging the two safety ropes 10 on overhead hanging points, respectively, when a worker 50 falls, a plane in which any one safety rope 10 is located is a first plane, a plane in which the other safety rope 10 is located is a second plane, an included angle α is set between the first plane and the second plane, and the included angle α satisfies: alpha is more than 0 and less than 90 degrees.

According to the use method of the safety belt, the included angle alpha is formed by the planes of the two safety ropes 10, so that when an operator 50 falls, the pulling force is converted into transverse or oblique force from the vertical direction, the problem that a person can slide down due to the action of gravity is avoided, the safety rope 10 is further prevented from being lifted to the chest part, and the problem that the connecting part of the safety belt and the safety rope 10 is lifted to the chest part of a human body, so that the chest of the human body is tightened, the breathing difficulty of the operator is caused, and even the asphyxia death of the person is caused is solved.

Alternatively, two equal-length safety ropes 10 or one longer and one shorter safety rope 10 may be provided, specifically, two unequal-length safety ropes 10 may be provided on the same side of the safety belt body 20, so that when the operator 50 is lifted, the plane on which the body of the operator 50 is located is inclined with the vertical direction, and further the chest of the operator 50 is pressed and dispersed to other positions, so that the chest of the operator 50 is protected from being extruded by the safety rope 10 and the safety belt body 20.

Specifically, the equal-length safety rope 10 not only can protect the chest of the operator 50, but also can enable the left side and the right side of the body of the operator 50 to be difficult to generate a height difference when the operator falls, and further can better protect the waist of the operator 50 waiting for rescue from being easy to be sprained, thereby reducing the risk and difficulty of rescue.

In the anti-asphyxia safety belt, the two safety ropes 10 are respectively connected with the safety belt body 20, compared with a single safety rope 10, the two safety ropes 10 can bear the pulling force of a pulling worker at the same time, so that the two safety ropes 10 bear larger pulling force limit when in use, and are more uniform in bearing pulling force, the service life of the safety ropes 10 is prolonged, simultaneously, the safety belt body 20 and the safety ropes 10 can be transported together by directly connecting the safety ropes 10 with the safety belt body 20, the transportation cost of the anti-asphyxia safety belt is reduced, the two safety ropes 10 are hung on a high-altitude hanging point, the pressure born by the two safety ropes 10 is smaller than the pressure born by the single safety rope 10, when the safety rope 10 falls down in daily use and personnel, abrasion and breakage are not easy to occur, and when the personnel 50 falls down, as the two safety ropes 10 are not located on the same vertical plane, an included angle alpha is formed on the plane where the two safety ropes 10 are located, so that the personnel 50 can be lifted transversely or obliquely when the personnel 50 is hung up by the safety rope 10 after falling down, the body can be misaligned with the vertical direction, and the tension force received by the safety belt can not be along the chest direction, thereby avoiding the problem that the personnel falling down in the high-altitude operation caused by lifting the safety belt to the chest part of the human body in the prior art breathes difficultly and even die due to choking.

Meanwhile, the shoulder straps 230, the waistband and the leg straps 220 are connected together, so that the pulling force can be more uniformly dispersed on each part, the compression on the chest of the operator 50 is reduced, further, the leg straps 220 are fixed through the connecting straps 2210 and the reinforcing connecting straps 2220, the leg straps 220 can be better fixed on the safety belt body 20, further, the second safety buckle 40 is arranged on the reinforcing connecting straps 2220, the safety rope 10 can drive the leg straps 220 when the second safety buckle 40 is pulled up, and further, the operator 50 can wait for rescue in a sitting posture when falling, so that the rescue cost and difficulty are reduced.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. A fall anti-asphyxia harness comprising:

a seat belt body (20); and

the safety rope (10), the safety rope (10) at least comprises two, the safety belt body (20) comprises a waist support (210), the falling anti-asphyxia safety belt further comprises at least two first safety buckles (30) and second safety buckles (40), the two first safety buckles (30) are respectively arranged on two sides of the waist support (210), the second safety buckles (40) are arranged on the front side of the waist support (210), one ends of the two safety ropes (10) are respectively connected with the two first safety buckles (30), and the other ends of the two safety ropes (10) are both connected with the second safety buckles (40);

the two safety ropes (10) are respectively hung on high-altitude hanging points, after an operator (50) falls down, the plane where one safety rope (10) is located is a first plane, the plane where the other safety rope (10) is located is a second plane, and an included angle is formed between the first plane and the second plane.

2. A fall anti-asphyxia harness according to claim 1, characterised in that the safety line (10) comprises:

the safety rope body (110), one end of the safety rope body (110) is bound on the first safety buckle (30);

the safety hook (120), safety hook (120) set up in safety rope body (110) other end, safety hook (120) with second safety knot (40) lock is connected.

3. The fall anti-asphyxia safety belt according to claim 1, wherein the second safety buckles (40) comprise at least two safety buckles (40) and the two safety buckles (40) are arranged on the safety belt body (20) at intervals along the length direction of the waist support (210).

4. The fall anti-asphyxia safety belt according to claim 1, wherein the safety belt body (20) further comprises an auxiliary protection belt, the waist support (210) is located above the auxiliary protection belt, and a connection belt (2210) is provided at the connection of the waist support (210) and the auxiliary protection belt.

5. The fall arrest harness as claimed in claim 4, wherein the auxiliary protection strap comprises a leg strap (220), one end of the connection strap (2210) is disposed on the leg strap (220), and the other end is disposed on the waist support (210).

6. The fall anti-asphyxia safety harness according to claim 5, wherein two of the first safety buckles (30) are disposed on both sides of the waist support (210) and/or the leg strap (220), and the second safety buckle (40) is disposed on the front side of the waist support (210) and/or the connecting strap (2210).

7. The fall anti-asphyxia harness of claim 5, wherein the harness body (20) further comprises:

a shoulder strap (230), wherein the shoulder strap (230) is positioned above the waist support (210), a first clamping ring (2310) is arranged on the front side of the shoulder strap (230), and a second clamping ring (2110) is arranged on the front side of the waist support (210) and/or the leg strap (220);

the chest buckle (240), the first clamping ring (2310) and the second clamping ring (2110) are connected through the chest buckle (240) in a buckled mode.

8. The fall arrest harness according to claim 7, wherein the leg strap (220) further comprises a reinforcing connection strap (2220), one end of the reinforcing connection strap (2220) is tied to the second snap ring (2110), and the other end is fixedly disposed on the leg strap (220).

9. The fall anti-asphyxia harness of claim 7, wherein the harness body (20) further comprises: the back protection belt (250), shoulder strap (230) rear side is provided with third snap ring (2320), waist support (210) rear side is provided with fourth snap ring (2120), back protection belt (250) one end is binded and is located on third snap ring (2320), back protection belt (250) other end is binded and is located on fourth snap ring (2120).

10. The method for using the safety belt is characterized by comprising the following steps of:

providing a fall arrest harness as claimed in any one of claims 1 to 9;

connecting two safety ropes (10) with the safety belt body (20) respectively;

respectively hanging the two safety ropes (10) on high-altitude hanging points;

when a worker (50) falls, any one plane where the safety rope (10) is located is a first plane, the other plane where the safety rope (10) is located is a second plane, and an included angle is formed between the first plane and the second plane.