Quick connecting device for gas pipe of cutting torch

Abstract

The invention discloses a cutting torch air pipe quick connection device which comprises a quick connector, the quick connector comprises a first connector and a second connector, the first connector and the second connector are fixedly connected through a check ring, the first connector comprises a first straight pipe connector and a first toothed buckle connector, and the second connector comprises a second straight pipe connector and a second toothed buckle connector. The second connector comprises a second straight pipe connector and a second tooth buckle connector, reinforcing pieces are arranged on the end faces of the two sides of the check ring, each reinforcing piece comprises four sets of elastic pressing plates, the ends, away from the check ring, of the elastic pressing plates are provided with first conical surfaces, and the reinforcing pieces are sleeved with reinforcing sleeves. And a second conical surface is arranged on the inner wall of the reinforcing sleeve. According to the technical scheme, the end face of the joint of the air pipes makes contact with the check ring, it is guaranteed that the air pipes on the two sides of the quick connector can be inserted into the enough depth, the insertion depth is consistent, the joint of the air pipes and the connector is reinforced through the reinforcing piece and the reinforcing sleeve, and the loosening degree of the air pipes is judged by observing the exposure degree of the marking line.

Description

Technical Field

[0001] The invention relates to the technical field of air pipe joints, in particular to a cutting torch air pipe quick connection device. Background Art

[0002] Cutting torches are widely used in operations such as steel structure fabrication and shipbuilding. In operations involving high-temperature cutting (such as oxyacetylene cutting), such as shipbuilding, rubber hoses are commonly used for torch gas lines (often called "torch belts"). Torch gas lines are hoses or piping systems used to transport oxygen, fuel gases (such as acetylene and propane), or other auxiliary gases. They are a vital component of oxy-fuel cutting equipment. Proper use and maintenance of torch gas lines are crucial to ensuring cutting efficiency and operational safety. In industrial scenarios like shipbuilding, straight-through quick connectors are often used for gas line extensions and repairs.

[0003] In actual use, the insertion depth of traditional quick connectors is difficult to control, and the insertion depth of the two sides of the air pipe is not equal. During use, pulling the air pipe can easily cause the shorter inserted side to loosen and leak, eventually leading to an accident. When assembling traditional quick connectors, additional metal cable ties are required to fix the connection to ensure the stability of the connection between the quick connector and the air pipe. Summary of the Invention

[0004] Technical issues solved: In response to the shortcomings of the existing technology, the present invention provides a cutting torch gas pipe quick connection device, in which the end face of the gas pipe connection contacts the retaining ring, ensuring that the gas pipes on both sides of the quick connector can be inserted to a sufficient depth and the insertion depth is consistent. The connection between the gas pipe and the connector is reinforced by a reinforcement piece and a reinforcement sleeve, and the degree of looseness of the gas pipe can be judged by observing the exposure degree of the marking line, thereby solving the technical problems mentioned in the background technology.

[0005] Technical solution: To achieve the above objectives, the present invention is implemented through the following technical solutions: A cutting torch gas pipe quick connection device includes a quick connector, the quick connector includes a first connector and a second connector, the first connector and the second connector are fixedly connected by a retaining ring, the first connector includes a first straight pipe joint and a first threaded buckle joint, the second connector includes a second straight pipe joint and a second threaded buckle joint, both side end surfaces of the retaining ring are provided with reinforcement pieces, the reinforcement piece includes four groups of elastic pressure plates, the elastic pressure plate is provided with a first conical surface at one end away from the retaining ring, a reinforcement sleeve is provided on the reinforcement piece, and a second conical surface is provided on the inner wall of the reinforcement sleeve. The elastic pressure plate and the retaining ring are connected by an elastic connecting strip. The first connecting head of the quick connector is connected to the first air pipe, and the second connecting head of the quick connector is connected to the second air pipe. The first connecting head, the second connecting head and the retaining ring together constitute a quick connector. The retaining ring is located in the middle position of the quick connector. The end face of the first air pipe connection contacts with one side end face of the retaining ring to determine the insertion depth of the first air pipe. The end face of the second air pipe connection contacts with the other side end face of the retaining ring to determine the insertion depth of the second air pipe. The air pipes can be inserted to a sufficient depth, and the insertion depths of the air pipes are consistent.

[0006] In one possible implementation, the four groups of elastic pressure plates are evenly spaced along the circumferential direction of the retaining ring, and a gap is formed between two adjacent groups of elastic pressure plates. The gap forms an avoidance groove and an observation groove, which facilitates the assembly of the trachea and the observation of the connection status of the trachea.

[0007] In one possible implementation, a first sealing ring is provided on the first thread buckle joint, and a second sealing ring is provided on the second thread buckle joint. The thread buckle joint is embedded in the trachea and engaged, and is fixed by radial compression force, and the sealing ring seals the connection.

[0008] In a possible implementation, multiple groups of anti-slip grooves are provided on the outer surface of the elastic pressure plate, and the multiple groups of anti-slip grooves are evenly spaced along the straight direction of the elastic pressure plate. The multiple groups of anti-slip grooves increase the friction force of the contact surface of the elastic pressure plate.

[0009] In a possible implementation, a non-slip lining is provided on the inner side of the reinforcement sleeve, and the non-slip lining is bonded and fixed to the inner wall of the reinforcement sleeve, and the non-slip lining increases the friction of the inner contact surface of the reinforcement sleeve.

[0010] In one possible implementation, multiple groups of anti-slip protrusions are provided on the outer surface of the reinforcement sleeve, and the multiple groups of anti-slip protrusions are evenly spaced along the circumferential direction of the reinforcement sleeve. When the reinforcement sleeve is manually driven to slide, force is applied more conveniently to prevent the hand from slipping.

[0011] In one possible implementation, the first thread buckle joint includes a groove, the first sealing ring is located in the groove of the first thread buckle joint, the second thread buckle joint includes a groove, the second sealing ring is located in the groove of the second thread buckle joint, and the recessed area between the protrusions of the thread buckle joint forms a groove.

[0012] In one possible implementation, the first connector is embedded in the first air pipe and sealed and fixed thereto, the second connector is embedded in the second air pipe and sealed and fixed thereto, the end face of the first air pipe connection is in close contact with the end face on one side of the retaining ring, the end face of the second air pipe connection is in close contact with the end face on the other side of the retaining ring, the position of the first air pipe is limited by the end face on one side of the retaining ring, and the position of the second air pipe is limited by the end face on the other side of the retaining ring.

[0013] In one possible implementation, multiple groups of first marking lines are provided on the outer surface of the first straight pipe joint, and the multiple groups of first marking lines are evenly spaced along the axial direction of the first straight pipe joint. After the first air pipe is installed in place, the multiple groups of first marking lines are completely blocked. When the first air pipe becomes loose, part of the first marking lines will be exposed, and the degree of looseness of the air pipe can be judged by observing the degree of exposure of the marking lines.

[0014] In one possible implementation, multiple groups of second marking lines are provided on the outer surface of the second straight pipe joint, and the multiple groups of second marking lines are evenly spaced along the axial direction of the second straight pipe joint. After the second air pipe is installed in place, the multiple groups of second marking lines are completely blocked. When the second air pipe becomes loose, part of the second marking lines will be exposed, and the degree of looseness of the air pipe can be judged by observing the degree of exposure of the marking lines.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The first connecting head, the second connecting head and the retaining ring of the present invention together constitute a quick connector, and the retaining ring is located in the middle position of the quick connector. When the quick connector is used to connect the first air pipe and the second air pipe, the end face of the first air pipe connection contacts with the end face of one side of the retaining ring to determine the insertion depth of the first air pipe, and the end face of the second air pipe connection contacts with the end face of the other side of the retaining ring to determine the insertion depth of the second air pipe. This can ensure that the air pipes connected on both sides of the quick connector can be inserted to a sufficient depth, and the insertion depth of the air pipes is consistent. The force at the connection is uniform, and it is not easy to loosen or leak when the air pipe is pulled.

[0016] After the first and second trachea pipes of the present invention are initially fixed, external force is applied to slide the reinforcement sleeve, and the second conical surface of the reinforcement sleeve is squeezed against the first conical surface of the reinforcement member. Under the action of this squeezing force, multiple groups of elastic pressure plates undergo corresponding elastic deformation, and the multiple groups of elastic pressure plates are closed inward to tighten the trachea connection. The connection between the first trachea and the first connector is reinforced by the reinforcement member and the reinforcement sleeve, and the connection between the second trachea and the second connector is reinforced to improve the connection strength.

[0017] The present invention adds multiple groups of first marking lines on the outer surface of the first straight pipe joint, and adds multiple groups of second marking lines on the outer surface of the second straight pipe joint. When the trachea is normally connected, the marking lines are completely blocked. When the trachea becomes loose, part of the marking lines will be exposed. By observing the degree of exposure of the marking lines, the looseness of the trachea can be judged, and the problem of pipeline looseness can be discovered in time to avoid accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an assembly diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention after removing the reinforcement sleeve; Figure 4 It is a structural schematic diagram of the quick connector of the present invention; Figure 5 The cross-sectional view of the present invention Figure 1 ; Figure 6 The cross-sectional view of the present invention Figure 2 ; Figure 7 It is a structural schematic diagram of the reinforcement sleeve of the present invention; Figure 8 is a cross-sectional view of the reinforcement sleeve of the present invention; Figure 9 Schematic diagram of the assembly of the first air pipe, quick connector, reinforcement member and reinforcement sleeve of the present invention; Figure 10 for Figure 1 A partial enlarged view of area A in the middle.

[0020] In the figure: 1. quick connector; 2. reinforcement piece; 3. reinforcement sleeve; 4. first air pipe; 5. second air pipe; 11. first connector; 12. second connector; 13. retaining ring; 111. first straight pipe joint; 112. first threaded buckle joint; 113. first sealing ring; 114. first marking line; 121. second straight pipe joint; 122. second threaded buckle joint; 123. second sealing ring; 124. second marking line; 21. elastic pressure plate; 22. first conical surface; 23. anti-slip groove; 24. elastic connecting strip; 31. anti-slip lining; 32. anti-slip protrusion; 33. second conical surface. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a cutting torch gas pipe quick connection device, in which the end face of the gas pipe connection contacts the retaining ring, ensuring that the gas pipes on both sides of the quick connector can be inserted to a sufficient depth and the insertion depth is consistent. The connection between the gas pipe and the connector is reinforced by a reinforcement piece and a reinforcement sleeve, and the degree of looseness of the gas pipe is judged by observing the exposure degree of the marking line, thereby solving the technical problems mentioned in the background technology.

[0022] The technical solution in the embodiments of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows: Example 1: See also Figure 1-10 The present invention provides a technical solution: a cutting torch gas pipe quick connection device, including a quick connector 1, the quick connector 1 includes a first connector 11 and a second connector 12, the first connector 11 and the second connector 12 are fixedly connected by a retaining ring 13, the first connector 11 includes a first straight pipe joint 111 and a first threaded buckle joint 112, the second connector 12 includes a second straight pipe joint 121 and a second threaded buckle joint 122, and a reinforcement member 2 is provided on both side end surfaces of the retaining ring 13, the reinforcement member 2 includes four groups of elastic pressure plates 21, and the elastic pressure plate 21 is provided with a first conical surface 22 at one end away from the retaining ring 13, a reinforcement sleeve 3 is sleeved on the reinforcement member 2, and a second conical surface 33 is provided on the inner wall of the reinforcement sleeve 3, the elastic pressure plate 21 and the retaining ring 13 are connected by an elastic connecting strip 24, the first connector 11 of the quick connector 1 is connected to the first gas pipe 4, and the second connector 12 of the quick connector 1 is connected to the second gas pipe 5.

[0023] The first connector 11, the second connector 12 and the retaining ring 13 together constitute the quick connector 1, and the retaining ring 13 is located in the middle of the quick connector 1. Figure 2As shown, when using the quick connector 1 to connect the first air pipe 4 and the second air pipe 5, the first connector 11 of the quick connector 1 is inserted into the first air pipe 4 until the end surface of the connection of the first air pipe 4 contacts the end surface of one side of the retaining ring 13, thereby determining the insertion depth of the first air pipe 4. When using the quick connector 1 to connect the second air pipe 5, the second connector 12 of the quick connector 1 is inserted into the second air pipe 5 until the end surface of the connection of the second air pipe 5 contacts the end surface of the other side of the retaining ring 13, thereby determining the insertion depth of the second air pipe 5. The first connector 11 and the second connector 12 are inserted into the second air pipe 5 until the end surface of the connection of the second air pipe 5 contacts the end surface of the other side of the retaining ring 13. The lengths are the same, therefore, when the first connecting head 11 and the second connecting head 12 are used to connect the first trachea 4 and the second trachea 5, the insertion depths of the first trachea 4 and the second trachea 5 are the same, which can ensure that the trachea connected on both sides of the quick connector 1 can be inserted to a sufficient depth, and the insertion depths of the trachea are consistent. During actual operation, the trachea position is limited by the retaining ring 13 in the middle position, the insertion depth is easy to control, and the insertion depths of the trachea on both sides can be ensured to be the same, preventing the trachea on both sides from having inconsistent insertion depths. The force at the connection is uniform, and it is not easy to loosen or leak when the trachea is pulled.

[0024] In some examples, four groups of elastic pressure plates 21 are evenly spaced along the circumferential direction of the retaining ring 13, and a gap is formed between two adjacent groups of elastic pressure plates 21. The gap forms an avoidance groove and an observation groove, which facilitates the assembly of the trachea and the observation of the connection status of the trachea.

[0025] Reinforcements 2 are added to the end faces of both sides of the retaining ring 13. The reinforcements 2 are elastically connected to the retaining ring 13, and the elastic pressure plates 21 themselves have a certain elasticity. The four groups of elastic pressure plates 21 of the reinforcement 2 can produce corresponding elastic deformation under the action of external force, and rebound and reset when the external force disappears.

[0026] Insert the first connector 11 into the first air pipe 4 to achieve preliminary sealing and fixation between the first connector 11 and the first air pipe 4, and insert the second connector 12 into the second air pipe 5 to achieve preliminary sealing and fixation between the second connector 12 and the second air pipe 5. After the preliminary fixation of the first air pipe 4 and the second air pipe 5 is completed, the connection between the first air pipe 4 and the first connector 11 is reinforced by the reinforcement piece 2 and the reinforcement sleeve 3, and the connection between the second air pipe 5 and the second connector 12 is reinforced.

[0027] When the first and second air pipes 4 are initially connected, the reinforcing sleeve 3 and the reinforcing part 2 are in a separated state, and the reinforcing sleeve 3 can be moved to the air pipe position to avoid the gap. After the first air pipe 4 is initially fixed, the position of the reinforcing sleeve 3 on the first air pipe 4 side is manually adjusted, the reinforcing sleeve 3 is aligned with the reinforcing part 2, and an external force is applied to slide the reinforcing sleeve 3, driving the reinforcing sleeve 3 to slide along the reinforcing part 2. During the sliding process of the reinforcing sleeve 3, the second conical surface 33 of the inner side surface is tightly in contact with the first conical surface 22 of the reinforcing part 2. During the continuous sliding process, the second conical surface 33 of the reinforcing sleeve 3 squeezes the first conical surface 22 of the reinforcing part 2 under the action of the squeezing force, the multiple groups of elastic pressure plates 21 of the reinforcing part 2 undergo corresponding elastic deformation, and the multiple groups of elastic pressure plates 21 close inward, contact the tube body of the first air pipe 4, and press the first air pipe 4, so as to achieve the fastening of the first air pipe 4 and improve the locking force between the first air pipe 4 and the first connecting head 11, without the need to use additional metal straps for fixing.

[0028] Similarly, after the second air pipe 5 is initially fixed, the position of the reinforcement sleeve 3 on the side of the second air pipe 5 is manually adjusted to align the reinforcement sleeve 3 with the reinforcement member 2, and external force is applied to slide the reinforcement sleeve 3 to drive the reinforcement sleeve 3 to slide along the reinforcement member 2. During the sliding of the reinforcement sleeve 3, the second conical surface 33 of its inner side surface is in close contact with the first conical surface 22 of the reinforcement member 2. During the continuous sliding process, the second conical surface 33 of the reinforcement sleeve 3 squeezes the first conical surface 22 of the reinforcement member 2. Under the action of this squeezing force, the multiple groups of elastic pressure plates 21 of the reinforcement member 2 undergo corresponding elastic deformation, and the multiple groups of elastic pressure plates 21 close inward, contact the tube body of the second air pipe 5, and press the second air pipe 5, so as to achieve the fastening of the second air pipe 5 and improve the locking force between the second air pipe 5 and the second connecting head 12.

[0029] In some examples, a first sealing ring 113 is provided on the first threaded buckle joint 112 , and a second sealing ring 123 is provided on the second threaded buckle joint 122 .

[0030] The thread buckle is a mechanical structure that achieves quick connection or sealing through the matching of concave and convex tooth shapes. The recessed area between the protrusions accommodates the sealing ring. The first thread buckle joint 112 is embedded in the first trachea 4 and bites, and is fixed by radial compression force. The first sealing ring 113 on the first thread buckle joint 112 realizes the sealing of the connection. The second thread buckle joint 122 is embedded in the second trachea 5 and bites, and is fixed by radial compression force. The second sealing ring 123 on the second thread buckle joint 122 realizes the sealing of the connection. The initial sealing and fixation between the first connector 11 and the first trachea 4 is achieved through the thread buckle structure, and the initial sealing and fixation between the second connector 12 and the second trachea 5 is achieved.

[0031] In some examples, multiple groups of anti-slip grooves 23 are provided on the outer surface of the elastic pressure plate 21, and the multiple groups of anti-slip grooves 23 are evenly spaced along the straight direction of the elastic pressure plate 21. The multiple groups of anti-slip grooves 23 increase the friction force of the contact surface of the elastic pressure plate 21, thereby increasing the contact friction force between the reinforcement sleeve 3 and the elastic pressure plate 21, improving the stability of the reinforcement sleeve 3 after reinforcement is completed, and not easily causing side slip.

[0032] In some examples, an anti-slip lining 31 is provided on the inner side surface of the reinforcement sleeve 3, and the anti-slip lining 31 is bonded and fixed to the inner wall of the reinforcement sleeve 3. The anti-slip lining 31 increases the friction force of the inner contact surface of the reinforcement sleeve 3, thereby increasing the contact friction force between the reinforcement sleeve 3 and the elastic pressure plate 21, improving the stability of the reinforcement sleeve 3 after reinforcement is completed, and not easily causing side slip.

[0033] In some examples, multiple groups of anti-slip protrusions 32 are provided on the outer surface of the reinforcement sleeve 3, and the multiple groups of anti-slip protrusions 32 are evenly spaced along the circumferential direction of the reinforcement sleeve 3. When the reinforcement sleeve 3 is manually driven to slide, it is more convenient to apply force to prevent the hand from slipping. When the reinforcement member 2 and the reinforcement sleeve 3 need to be separated, the reinforcement sleeve 3 can be driven in reverse to slide. The structure is simple and the operation is convenient.

[0034] In some examples, the first threaded buckle joint 112 includes a groove, and the first sealing ring 113 is located in the groove of the first threaded buckle joint 112. The second threaded buckle joint 122 includes a groove, and the second sealing ring 123 is located in the groove of the second threaded buckle joint 122. The recessed area between the protrusions of the first threaded buckle joint 112 forms a groove, and the groove accommodates the first sealing ring 113. The recessed area between the protrusions of the second threaded buckle joint 122 forms a groove, and the groove accommodates the second sealing ring 123. The number of sealing rings corresponds to the number of grooves.

[0035] In some examples, the first connector 11 is embedded in the first air pipe 4 and sealed and fixed to the first air pipe 4, the second connector 12 is embedded in the second air pipe 5 and sealed and fixed to the second air pipe 5, the end face of the connection of the first air pipe 4 is tightly attached to the end face of one side of the retaining ring 13, and the end face of the connection of the second air pipe 5 is tightly attached to the end face of the other side of the retaining ring 13. The position of the first air pipe 4 is limited by the end face of one side of the retaining ring 13, and the position of the second air pipe 5 is limited by the end face of the other side of the retaining ring 13.

[0036] By adopting the above technical solutions: The first connector 11, the second connector 12 and the retaining ring 13 together constitute the quick connector 1. The retaining ring 13 is located in the middle position of the quick connector 1. When the quick connector 1 is used to connect the first air pipe 4 and the second air pipe 5, the end face of the first air pipe 4 at the connection is in contact with one end face of the retaining ring 13 to determine the insertion depth of the first air pipe 4, and the end face of the second air pipe 5 at the connection is in contact with the other end face of the retaining ring 13 to determine the insertion depth of the second air pipe 5. This can ensure that the air pipes connected on both sides of the quick connector 1 can be inserted to a sufficient depth, and the insertion depth of the air pipes is consistent. The force at the connection is uniform, and it is not easy to loosen or leak when the air pipes are pulled.

[0037] After the first air pipe 4 and the second air pipe 5 are initially fixed, an external force is applied to slide the reinforcement sleeve 3, and the second conical surface 33 of the reinforcement sleeve 3 squeezes the first conical surface 22 of the reinforcement member 2. Under the action of the squeezing force, the multiple groups of elastic pressure plates 21 undergo corresponding elastic deformation, and the multiple groups of elastic pressure plates 21 close inward to tighten the air pipe connection. The connection between the first air pipe 4 and the first connector 11 is reinforced by the reinforcement member 2 and the reinforcement sleeve 3, and the connection between the second air pipe 5 and the second connector 12 is reinforced to improve the connection strength.

[0038] Example 2: Based on Example 1, this example introduces the specific structure of a first straight pipe joint 111 and a second straight pipe joint 121 in a cutting torch gas pipe quick connection device. Multiple groups of first marking lines 114 are provided on the outer surface of the first straight pipe joint 111, and the multiple groups of first marking lines 114 are evenly spaced along the axial direction of the first straight pipe joint 111.

[0039] like Figure 2 As shown, after the first air pipe 4 is installed in place, the tube body of the first air pipe 4 will block the multiple groups of first marking lines 114 on the outer side of the first straight pipe joint 111. When the first air pipe 4 is loose, part of the first marking lines 114 will be exposed. The degree of looseness of the first air pipe 4 can be judged by observing the degree of exposure of the first marking lines 114.

[0040] In some examples, a plurality of groups of second marking lines 124 are provided on the outer surface of the second straight pipe joint 121 , and the plurality of groups of second marking lines 124 are evenly spaced along the axial direction of the second straight pipe joint 121 .

[0041] like Figure 2 As shown, after the second air pipe 5 is installed in place, the tube body of the second air pipe 5 will block the multiple groups of second marking lines 124 on the outer side of the second straight pipe joint 121. When the second air pipe 5 is loose, part of the second marking lines 124 will be exposed. The degree of looseness of the second air pipe 5 can be judged by observing the degree of exposure of the second marking lines 124.

[0042] By adopting the above technical solutions: A plurality of first marking lines 114 are added on the outer surface of the first straight pipe joint 111, and a plurality of second marking lines 124 are added on the outer surface of the second straight pipe joint 121. When the trachea is normally connected, the marking lines are completely blocked. When the trachea becomes loose, part of the marking lines will be exposed. By observing the degree of exposure of the marking lines, the degree of looseness of the trachea can be judged, and problems can be discovered in time when the pipeline is loose to avoid accidents.

[0043] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. However, obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A cutting torch gas pipe quick connection device, comprising a quick connector (1), characterized in that: The quick connector (1) comprises a first connector (11) and a second connector (12), the first connector (11) and the second connector (12) being fixedly connected via a retaining ring (13), the first connector (11) comprising a first straight pipe connector (111) and a first threaded buckle connector (112), the second connector (12) comprising a second straight pipe connector (121) and a second threaded buckle connector (122), and reinforcement pieces (2) are provided on both side end faces of the retaining ring (13), the reinforcement pieces (2) comprising four An elastic pressure plate (21) is provided, wherein the end of the elastic pressure plate (21) away from the retaining ring (13) is provided with a first conical surface (22), the reinforcing member (2) is provided with a reinforcing sleeve (3), and the inner wall of the reinforcing sleeve (3) is provided with a second conical surface (33), the elastic pressure plate (21) and the retaining ring (13) are connected via an elastic connecting strip (24), the first connector (11) of the quick connector (1) is connected to the first air pipe (4), and the second connector (12) of the quick connector (1) is connected to the second air pipe (5).

2. A cutting torch gas pipe quick connection device according to claim 1, characterized in that: The four groups of elastic pressure plates (21) are evenly spaced along the circumferential direction of the retaining ring (13), and a gap is formed between two adjacent groups of elastic pressure plates (21).

3. The cutting torch gas pipe quick connection device according to claim 1, characterized in that: A first sealing ring (113) is sleeved on the first threaded buckle joint (112), and a second sealing ring (123) is sleeved on the second threaded buckle joint (122).

4. The cutting torch gas pipe quick connection device according to claim 1, characterized in that: A plurality of groups of anti-slip grooves (23) are provided on the outer surface of the elastic pressing plate (21), and the plurality of groups of anti-slip grooves (23) are evenly spaced along the straight line direction of the elastic pressing plate (21).

5. The cutting torch gas pipe quick connection device according to claim 1, characterized in that: An anti-slip lining (31) is provided on the inner side surface of the reinforcement sleeve (3), and the anti-slip lining (31) is adhesively fixedly connected to the inner wall of the reinforcement sleeve (3).

6. The cutting torch gas pipe quick connection device according to claim 1, characterized in that: A plurality of groups of anti-slip protrusions (32) are provided on the outer surface of the reinforcement sleeve (3), and the plurality of groups of anti-slip protrusions (32) are evenly spaced along the circumferential direction of the reinforcement sleeve (3).

7. The cutting torch gas pipe quick connection device according to claim 3, characterized in that: The first threaded buckle joint (112) includes a groove, and the first sealing ring (113) is located in the groove of the first threaded buckle joint (112). The second threaded buckle joint (122) includes a groove, and the second sealing ring (123) is located in the groove of the second threaded buckle joint (122).

8. The cutting torch gas pipe quick connection device according to claim 1, characterized in that: The first connector (11) is embedded in the first air pipe (4) and is sealed and fixed to the first air pipe (4); the second connector (12) is embedded in the second air pipe (5) and is sealed and fixed to the second air pipe (5); the end face of the first air pipe (4) at the connection is in close contact with the end face of one side of the retaining ring (13); and the end face of the second air pipe (5) at the connection is in close contact with the end face of the other side of the retaining ring (13).

9. The cutting torch gas pipe quick connection device according to claim 1, characterized in that: A plurality of groups of first marking lines (114) are provided on the outer surface of the first straight pipe joint (111), and the plurality of groups of first marking lines (114) are evenly spaced along the axial direction of the first straight pipe joint (111).

10. The cutting torch gas pipe quick connection device according to claim 1, characterized in that: A plurality of groups of second marking lines (124) are provided on the outer surface of the second straight pipe joint (121), and the plurality of groups of second marking lines (124) are evenly spaced along the axial direction of the second straight pipe joint (121).

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