Adjustable self-locking buckle and high-altitude emergency escape safety belt thereof

Abstract

The high-altitude emergency escape safety belt comprises a plate body, two sets of strip-shaped grooves are formed in the plate body, a binding end used for fixing an escape person is formed on one side of the plate body by the safety belt, and two free ends on the other side of the plate body are fixed and form a connecting end. A self-locking plate body fixed with the plate body is arranged on the plate body on one side of the connecting end, and is provided with two groups of self-locking strip-shaped grooves which allow the two free ends of the safety belt to pass through the two groups of strip-shaped grooves and then enter and form the connecting end on the outer side of the self-locking plate body; the opening distance between the two sets of self-locking strip-shaped grooves is larger than the opening distance between the two sets of strip-shaped grooves, and a deformation self-locking area which drives the safety belt to deform and automatically locks the safety belt when the safety belt is in a stressed state is formed between the plate body and the self-locking plate body. The self-locking escape device is simple in structure, self-locking can be achieved in the escape person landing process, meanwhile, the locking degree can be flexibly adjusted in real time, and the safety performance is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-altitude fire-fighting lifesaving apparatus, and in particular to an adjustable self-locking buckle and a high-altitude emergency escape safety belt. BACKGROUND

[0002] Due to long escape paths, crowded personnel, and great difficulty in evacuation in high-rise buildings, and the fact that fire-fighting equipment cannot reach the 15th floor or above, the problem of emergency escape in high-rise building fires has always been a difficult problem. Therefore, it is urgent to solve the current high-rise building fire emergency escape and safe evacuation problem.

[0003] High-rise emergency lifesaving descent devices are special equipment for evacuation and escape in emergency situations such as high-rise building fires, and are mainly divided into three categories: fixed, mobile personal, and personal backpack types. The core descent principle includes two non-electric operation modes: friction and air damping, which can control the descent speed within the safe range of 0.16-1.5 m / s. The existing descent device is mainly composed of a hook (or a ring), a safety belt, a rope, and a speed control device. Through the friction interaction between the speed control device and the rope, a damping force is generated to overcome the static friction force in the initial acceleration stage, maintain the kinetic energy balance in the uniform descent stage, and ensure safe landing through the speed reduction mechanism near the ground. In actual application, the user's weight and the device friction force jointly act on the rope to form a dynamic balance. At present, the related patent technologies of high-rise emergency escape equipment are as follows:

[0004] CN114344745A discloses an emergency safety escape descent device, which comprises a speed limiter, a safety hook arranged at the top of the speed limiter, a rope, a rope reel, a protection assembly, a connecting piece, a safety belt connected to the rope, and a buckle. The controller controls the air pump to work, so that the air pipe inflates the annular air bag, and then the annular air bag, the foot air bag and the horizontal air bag are inflated to be full.

[0005] CN207168846U discloses a high-rise building disaster escape and self-rescue device, which comprises a pulley, a speed reduction bolt, and an 8-shaped descender. The pulley is arranged in the middle position of the pulley housing and connected with the pulley housing through a through bolt. The speed reduction bolt is arranged at the bottom of the pulley housing and connected with the pulley housing through a threaded connection. The 8-shaped descender is arranged at the required position of the steel wire rope and connected with the steel wire rope through a sleeve buckle.

[0006] CN207168843U discloses a fire escape slow descent device, including a speed reducer shell, a fastening belt and a guide wheel, the upper portion of the speed reducer shell is provided with a lifting ring, and the bottom end of the front surface of the speed reducer shell is provided with a fixing bolt, the lower right side of the fixing bolt is provided with a steel wire rope guide opening, and the lower portion of the steel wire rope guide opening is provided with a steel wire rope connector;

[0007] From the above patent technology, there are many types of equipment for high-rise building fire emergency escape at present, and the main research direction is to make the speed of the damping speed reducer easy to control, the descending process more stable, one escape device for multiple people to use back and forth, and how to provide sufficient safety damping for escape personnel of different weights under the safe descending speed. However, the most critical and important part of the high-rise building fire emergency escape equipment is ignored, which is the safety adjustment problem of the safety belt used for binding or fixing the escape personnel. The operation process of the existing various escape devices needs to fix the escape personnel with a safety belt first, then slowly lower the escape personnel to the ground through the damping speed reducer, and finally open the safety belt. In order to adapt to the convenient use of escape personnel of different heights and weights, the existing safety belt structure is mainly a nylon belt with a certain width fixed at the head and tail, and a lock buckle is sleeved on the nylon belt and slides along the length direction of the nylon belt to adjust the size of the binding space, as shown in Figure 1 、 2 Due to the body sway and gravity during the slow descending process of the escape personnel in the high altitude, the lock buckle is easily slid to the end away from the body, and the safety belt binding is loose and cannot lock the body. With the continuous sliding of the lock buckle, the fixed space formed by the safety belt fixed on the body becomes larger and larger, which easily leads to the falling of the escape personnel from the safety belt, and due to the downward gravity of the body, the safety belt is always in a tight stressed state, and the lock buckle cannot be manually adjusted to lock the safety belt during the descending process of the escape personnel. Therefore, this problem has become an important safety hazard of the high-altitude escape equipment.

[0008] In summary, how to avoid the sliding of the lock buckle and the loosening of the safety belt during the descending process of the escape personnel, and how to adjust the locking degree of the safety belt in real time and flexibly when the fixed space of the safety belt becomes larger and the binding becomes looser, have become a difficult problem to be solved by the technical personnel in the field of high-altitude fire rescue equipment. SUMMARY

[0009] In view of the deficiencies of the prior art, the technical problem to be solved by the present application is to provide an adjustable self-locking buckle and a high-altitude emergency escape safety belt which have simple structure, can realize self-locking during the descending process of the escape personnel, can adjust the locking degree in real time and flexibly, and can significantly improve the safety performance.

[0010] To solve the above technical problems, the technical scheme adopted by the present application is: an adjustable self-locking buckle, comprising a plate body, two groups of strip-shaped grooves allowing two free ends of a safety belt to pass through are formed on the plate body along the width direction of the safety belt, the safety belt forms a binding end for fixing an escaping person on one side of the plate body, and the two free ends on the other side are fixed and form a connecting end for connecting with a damping deceleration device, a self-locking plate body fixed with the plate body is arranged on one side of the connecting end, two groups of self-locking strip-shaped grooves allowing the two free ends of the safety belt to pass out through the two groups of strip-shaped grooves and then enter the connecting end formed on the outside of the self-locking plate body are formed on the self-locking plate body, the distance between the two groups of self-locking strip-shaped grooves is greater than the distance between the two groups of strip-shaped grooves, and a deformation self-locking area for driving the safety belt to deform and automatically lock the safety belt when the safety belt is in a stressed state is formed between the plate body and the self-locking plate body.

[0011] The adjustable self-locking buckle, the plate body and the self-locking plate body are respectively provided with connecting holes, a cylindrical component for supporting and fixing the plate body and the self-locking plate body is arranged between the plate body and the self-locking plate body, and the plate body, the self-locking plate body and the cylindrical component are fixed by screws.

[0012] The adjustable self-locking buckle, the two ends of the plate body and the self-locking plate body respectively extend outward to form connecting portions, and the connecting holes are respectively arranged on the connecting portions.

[0013] The adjustable self-locking buckle, the deformation self-locking area is formed by the plate body, the self-locking plate body and the cylindrical component.

[0014] The adjustable self-locking buckle, the distance between the two groups of strip-shaped grooves is 4-5 mm, the distance between the two groups of self-locking strip-shaped grooves is 12-15 mm, and the height of the cylindrical component is 9-10 mm.

[0015] The adjustable self-locking buckle, the strip-shaped grooves are arranged along the width direction of the safety belt, and the length of the strip-shaped grooves is greater than the length of the self-locking strip-shaped grooves along the width direction of the safety belt.

[0016] The adjustable self-locking buckle, the plate body and the self-locking plate body are strip-shaped plates or circular plates, and the thickness is 2-4 mm.

[0017] The adjustable self-locking buckle, the two groups of strip-shaped grooves and the self-locking strip-shaped grooves arranged on the plate body and the self-locking plate body are symmetrically arranged.

[0018] A high-altitude emergency escape safety belt, comprising a safety belt body, further comprising a buckle arranged on the safety belt body, and the buckle is an adjustable self-locking buckle.

[0019] The adjustable self-locking buckle and the high-altitude emergency escape safety belt have the advantages that: the self-locking plate body is installed on the basis of the buckle in the prior art, two groups of strip-shaped grooves on the plate body and two groups of self-locking strip-shaped grooves formed on the plate body are used, so that the safety belt is deformed when being stressed, a "reverse triangle" shape is formed in the deformation self-locking area, the surface of the safety belt is clamped in the groove openings of the strip-shaped grooves and the self-locking strip-shaped grooves through two times of inclined deformation of the safety belt, the inclined resistance and friction force are formed, the buckle is prevented from sliding along the safety belt, and the self-locking purpose is achieved. Meanwhile, the interval between the two groups of strip-shaped grooves close to the escape personnel is small, the interval between the self-locking strip-shaped grooves on the outside is large, the safety belt is inclined and deformed outwardly from the strip-shaped grooves to the self-locking strip-shaped grooves, the safety belt is tightly clamped in the groove openings in the reverse direction, and therefore the buckle cannot slide upwardly, but can only slide downwardly, and the one-way adjustment purpose that the buckle can only slide to the binding end but cannot slide upwardly is achieved. The buckle has the advantages of simple structure, convenient use, real-time and flexible adjustment of the locking degree of the safety belt when the fixed space of the safety belt is enlarged and the body cannot be locked tightly during the escape personnel landing, flexible and labor-saving adjustment of the locking degree and the binding force, significant improvement of the personal safety of the high-altitude escape personnel, and suitability for industrial production and popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a connection structure diagram of the lock buckle and the safety belt in the prior art.

[0021] Figure 2 It is a principle diagram of the lock buckle locking the safety belt in the prior art.

[0022] Figure 3 It is a disassembly structure diagram of the adjustable self-locking buckle in embodiment 1 of the application.

[0023] Figure 4 It is a whole structure diagram of the adjustable self-locking buckle.

[0024] Figure 5 It is a full cross-sectional view of the adjustable self-locking buckle.

[0025] Figure 6 It is a structure diagram of the connection between the adjustable self-locking buckle and the safety belt.

[0026] Figure 7 It is a locking principle diagram of the adjustable self-locking buckle.

[0027] Figure 8 It is a structure diagram of the adjustable self-locking buckle in embodiment 2 of the application. DETAILED DESCRIPTION

[0028] The application will be further described in detail in combination with the drawings and specific embodiments.

[0029] Example 1:

[0030] like Figures 3-6 As shown, an adjustable self-locking buckle includes a plate 1. Two sets of strip grooves 3 are provided on the plate 1 along the width direction of the safety belt 2, allowing the two free ends of the safety belt 2 to pass through respectively. The safety belt 2 forms a binding end 4 on one side of the plate 1 for fixing the escaped person, and the two free ends on the other side are fixed and form a connecting end 5 for connecting with a damping deceleration device.

[0031] A self-locking plate 6, fixed to the plate 1, is provided on one side of the connecting end 5. The self-locking plate has two sets of self-locking slots 7 on its outer side, allowing the two free ends of the safety belt 2 to pass through two sets of slots 3 and enter the connecting end 5. To allow the safety belt 2 to deform under stress, the driving safety belt is tilted as much as possible towards both sides of the self-locking plate 6 to form an inverted triangle structure. The distance between the two sets of self-locking slots 7 is greater than the distance between the two sets of slots 3. Specifically, the distance between the two sets of slots 3 is 4-5 mm, and the distance between the two sets of self-locking slots 7 is 12-15 mm. The plate 1 and the self-locking plate 6 are strip-shaped metal plates, preferably made of rust-resistant galvanized steel. To improve deformation resistance and enhance safety, the thickness is 2-4 mm.

[0032] like Figures 4-5 As shown, in order to form a deformable self-locking zone 8 between plate 1 and self-locking plate 6, which drives the seat belt 2 to deform and automatically lock when the seat belt 2 is under stress, connecting holes 9 are symmetrically opened on plate 1 and self-locking plate 6, and the connecting holes 9 on plate 1 and self-locking plate 6 correspond to each other. A columnar component 10 is provided between plate 1 and self-locking plate 6 for supporting and fixing plate 1 and self-locking plate 6. Plate 1, self-locking plate 6 and columnar component 10 are fixed by screws 11. In this embodiment, the deformable self-locking zone 8 is formed by plate 1, self-locking plate 6 and columnar component 10. In order to control the deformation angle of seat belt 2, the height of columnar component is set to 9-10mm. Considering the actual processing cost, and to improve the firmness and stability of the fixed connection between plate 1 and self-locking plate 6 and enhance safety performance, the two ends of plate 1 and self-locking plate 6 extend outward to form connecting parts 12, and connecting holes 9 are respectively opened on connecting parts 12.

[0033] In this embodiment, in order to ensure that the two safety belts 2 are subjected to uniform force when they deform, the central axes of the plate 1 and the self-locking plate 6 are coincident, and the two sets of strip grooves 3 and self-locking strip grooves 7 respectively opened on the plate 1 and the self-locking plate 6 are symmetrically arranged.

[0034] In order to increase the self-locking performance and reduce the operation resistance of pulling the adjustable self-locking buckle when the escape personnel adjusts the locking force of the safety belt, the opening length of the strip-shaped groove 3 along the width direction of the safety belt 2 is greater than the opening length of the self-locking strip-shaped groove 7 along the width direction of the safety belt 2. The structure can make the escape personnel pull the adjustable self-locking buckle towards the body direction, the safety belt 2 has a larger movement range in the strip-shaped groove 3, the safety belt 2 gives the strip-shaped groove 3 the smallest resistance, and the adjustment process is more smooth and labor-saving. When self-locking, the self-locking strip-shaped groove 7 is close to the width of the safety belt 2, the safety belt 2 can generate and give the self-locking strip-shaped groove 7 the maximum pressure after being deformed by the upward pulling force and the gravity of the human body, thereby giving the safety belt 2 greater resistance, thereby improving the self-locking safety. In order to realize industrial application and reduce production cost, the plate body 1 and the self-locking plate body 6 can be made of stainless steel material, and the stainless steel plate is processed by stamping process. The technology is a conventional technical means, so it is not described in detail.

[0035] The adjustable self-locking buckle of the embodiment can be used for high-altitude emergency escape safety belts, including a safety belt body, and further including a buckle arranged on the safety belt body, the buckle being the adjustable self-locking buckle of the embodiment. Of course, the present application can also be used for hoisting high-altitude goods, rescue in emergency environment, and high-altitude operation personnel in power construction, to obtain maximum safety protection through the self-locking function and flexible locking function.

[0036] As shown in Figures 1-2 , 7, the principle of the present application for realizing real-time, flexible and labor-saving adjustment of the locking degree of the safety belt in the self-locking and stress state is as follows:

[0037] As shown in Figures 1-2 , when the existing buckle is worn in the safety belt and is subjected to upward pulling force and downward gravity of the human body at the same time, the safety belt has small deformation in the buckle slot, at this time the buckle slot cannot generate sufficient pressure and friction force to lock the safety belt, at this time the buckle is easy to slip along the surface of the safety belt under the action of external force in the falling process of the escape personnel, the fixed area is enlarged, the locking force of the safety belt on the escape personnel is reduced, and the safety performance is difficult to guarantee. As shown in Figure 7As shown, the present application utilizes the combination structure of "narrow slot + wide slot", utilizes the deformation self-locking area 8 formed by the plate body 1 and the self-locking plate body 6, and the safety belt 2 first passes through the narrow slot (two groups of strip-shaped grooves 3) and then passes through the wide slot (two groups of self-locking strip-shaped grooves 7). Under the action of bidirectional external force, the physical form thereof will change due to the inclination deformation, and the "inverted triangle" structure appears. In the upward process, the safety belt 2 is unfolded to the outside, and under the action of upward pulling force, the two safety belts 2 are in a tightening state and are pressed at the slot opening of the self-locking strip-shaped groove 7 at this time. Meanwhile, under the action of downward gravity, the two safety belts 2 are in a tightening state and are pressed at the slot opening of the strip-shaped groove 3 at this time. The additional friction force and constraint force applied to the belt body of the safety belt 2 at the slot opening of the self-locking strip-shaped groove 7 are greater than the friction force and constraint force applied to the belt body at the slot opening of the strip-shaped groove 3. Therefore, the upward sliding of the adjustable self-locking buckle is prevented, and the self-locking function is realized.

[0038] In the one-way adjustment function, due to the closing effect of the strip-shaped groove 3 on the safety belt 2, the deformation of the safety belt close to the human body part and the strip-shaped groove 3 is reduced, and therefore the tightening force generated is smaller than the friction force of the self-locking strip-shaped groove 7 acting on the safety belt 2. At this time, when the escapee applies pulling force to the adjustable self-locking buckle towards the human body direction, the pressure generated at the slot opening of the self-locking strip-shaped groove 7 to the surface of the safety belt 2 is offset, and the sliding of the adjustable self-locking buckle towards the human body direction is easier. After adjusting to the appropriate locking degree, the hand is released, and at this time, the adjustable self-locking buckle automatically enters the self-locking state again. Therefore, the present application sets the double structure design of the narrow slot and the wide slot, and finally realizes the flexible and labor-saving one-way adjustment of the adjustable self-locking buckle and the self-locking effect on the safety belt.

[0039] Embodiment 2:

[0040] The same parts of this embodiment and embodiment 1 will not be described again, and the difference lies in that another kind of appearance structure of the adjustable self-locking buckle is provided, and specifically as shown in Figure 8 The plate body 1 and the self-locking plate body 6 are provided as a circular plate, and the selection of the circular structure can improve the comfort of the escapee when holding the adjustment, facilitate the operation, and improve the flexibility of the operation.

[0041] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Within the essential scope of the present application, changes, modifications, additions or replacements made by ordinary skilled in the art should belong to the protection scope of the present application.

Claims

1. An adjustable self-locking buckle, comprising a plate having two sets of strip grooves along the width direction of a safety belt, allowing the two free ends of the safety belt to pass through respectively; the safety belt forming a binding end for securing an escapee on one side of the plate, and the two free ends on the other side being fixed and forming a connecting end for connection with a damping deceleration device, characterized in that: The plate body on the connecting end side is provided with a self-locking plate body fixed with the plate body, the self-locking plate body is provided with two groups of self-locking slits allowing two free ends of the safety belt to pass out through two groups of strip-shaped slits and enter the outside of the self-locking plate body to form the connecting end, the distance between the two groups of self-locking slits is greater than the distance between the two groups of strip-shaped slits, and a deformation self-locking area for driving the safety belt to deform and automatically lock the safety belt when the safety belt is in a stressed state is formed between the plate body and the self-locking plate body.

2. The adjustable self-locking clasp of claim 1, wherein: The plate body and the self-locking plate body are respectively provided with connecting holes, and a columnar component for supporting and fixing the plate body and the self-locking plate body is arranged between the plate body and the self-locking plate body, and the plate body, the self-locking plate body and the columnar component are fixed by screws.

3. The adjustable self-locking clasp of claim 2, wherein: The plate body and the self-locking plate body respectively extend outward at two ends to form connecting portions, and the connecting holes are arranged on the connecting portions.

4. The adjustable self-locking clasp of claim 2, wherein: The deformation self-locking area is formed by the plate body, the self-locking plate body and the columnar component.

5. The adjustable self-locking clasp of claim 1, wherein: The distance between the two groups of strip-shaped slits is 4-5 mm, the distance between the two groups of self-locking slits is 12-15 mm, and the height of the columnar component is 9-10 mm.

6. The adjustable self-locking clasp of claim 1, wherein: The length of the strip-shaped slit along the width direction of the safety belt is greater than the length of the self-locking slit along the width direction of the safety belt.

7. The adjustable self-locking clasp of claim 1, wherein: The plate body and the self-locking plate body are strip-shaped plates or circular plates, and the thickness is 2-4 mm.

8. The adjustable self-locking clasp of claim 1, wherein: The two groups of strip-shaped slits and the self-locking slits arranged on the plate body and the self-locking plate body are symmetrically arranged.

9. A high altitude emergency escape harness comprising a harness body, characterised in that: Further comprising a buckle arranged on the safety belt body, and the buckle is the adjustable self-locking buckle according to any one of claims 1-8.

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