Groove pipe fitting connecting structure of fire-fighting pipeline

Abstract

The utility model discloses a fire-fighting pipeline groove pipe fitting connecting structure, and relates to the technical field of fire-fighting pipeline pipe fitting connection, the fire-fighting pipeline groove pipe fitting connecting structure comprises a fixing assembly, two buckling assemblies, a reverse thrust assembly and a first connecting pipe, and the fixing assembly is connected with the reverse thrust assembly and the first connecting pipe. Through the arrangement of the fixing assembly, the reverse pushing assembly and the two buckling assemblies, the two buckling assemblies can correspondingly clamp two needed pipe fittings, water pressure pushes the blocking ring to slide in the sliding assembly, and therefore the sliding pipe and the fixing assembly are driven to integrally slide; and meanwhile, the fixing assembly also drives the reverse thrust assembly to drive the second sliding rail rod to conduct secondary buckling on the buckling plate on the other buckling assembly, so that the clamping tensile resistance to the pipe fitting is enhanced, and therefore when the structure is used, the self-locking state is automatically formed by means of water pressure in the pipe fitting; and therefore, the connection stability and the sealing effect are kept in long-time use, and the fire-fighting pipeline can be conveniently connected and used.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting pipeline pipe fitting connection, in particular to a fire-fighting pipeline groove pipe fitting connection structure. Background Art

[0002] Fire-fighting pipes refer to pipe materials used in fire-fighting to connect fire-fighting equipment and instruments, and to transport fire-fighting water, gas or other media. Due to special needs, there are special requirements for the thickness and material of fire-fighting pipes, and they are sprayed with red paint to transport fire-fighting water. Existing fire-fighting pipes usually use hot-dip galvanized welded steel pipes or seamless hot-dip galvanized steel pipes. During installation, the hot-dip galvanized pipes are first cut with a pipe cutting machine according to the required length, and then the cut galvanized pipes are connected end to end. Grooves are generally used between pipes. Grooved connection is to use rolling and grooving equipment to roll out grooves at the ends of the pipes.

[0003] At present, there are still some defects and deficiencies in the use of pipe connection structures. The specific areas that need to be improved are as follows:

[0004] The existing connection structure is not convenient enough for the connection and installation of pipe fittings. Secondly, the connection structure does not utilize the internal water flow pressure of the pipe fittings to form a self-locking function, so that the connection stability of the existing connection structure is poor during long-term use, thereby reducing its connection sealing effect. Utility Model Content

[0005] The purpose of the utility model is to provide a fire protection pipeline groove pipe fitting connection structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fire protection pipe groove pipe fitting connection structure, including a fixed component, two snap-on components, a reverse thrust component and a first connecting pipe, the fixed component is connected to the reverse thrust component and the first connecting pipe, the outer wall of the first connecting pipe is fixedly connected to the first stabilizing plate, the reverse thrust component and the fixed component are respectively connected to the two snap-on components at the opposite ends, the fixed component includes a second connecting pipe, the second connecting pipe is connected to the sliding component, the second connecting pipe is sleeved with the first connecting pipe, and the first connecting pipe is fixedly connected to the right end of the inner wall of the first connecting pipe.

[0007] As a preferred technical solution of the present utility model, the outer wall of the second connecting tube is fixedly connected to the fixing ring, and two linearly symmetrical first sliding rail rods are fixedly connected to the fixing ring, and the free ends of the two first sliding rail rods are fixedly connected to the first limiting rings, and the two first sliding rail rods are respectively sleeved with two first circular holes opened in the first stabilizing plate, and the left end of the outer wall of the second connecting tube is fixedly connected to two fixing blocks that are symmetrical up and down and front and back, and the opposite sides of the two fixing blocks are respectively fixedly connected to the two first fixed shafts.

[0008] As a preferred technical solution of the utility model, the sliding assembly includes a sliding tube sleeved inside the second connecting tube, a blocking ring is fixedly connected to the right end of the inner wall of the sliding ring, the outer wall surface of the sliding tube is fixedly connected to the two second inner rings and the linkage ring, and the outer wall surface of the sliding tube is sleeved with two sealing rings.

[0009] As a preferred technical solution of the utility model, the two sealing rings are located between the two second inner rings and the linkage ring, the linkage ring is fixedly connected to the left side of the second connecting tube, and the sealing ring on the right is located between the first inner ring fixedly connected to the inner wall of the left end of the second connecting tube and the second inner ring on the right.

[0010] As a preferred technical solution of the utility model, the reverse thrust assembly includes a third connecting tube, the right side of the outer wall of the third connecting tube is fixedly connected to the third inner ring, the third inner ring is sleeved with the left end of the first sliding tube, and the third inner ring and the left side of the sliding tube are sleeved between the second inner ring inside the third connecting tube and correspond to the left sealing ring.

[0011] As a preferred technical solution of the present utility model, the outer wall surface of the third connecting tube is fixedly connected to the two second stabilizing plates, the front and rear side surfaces of the second stabilizing plate on the right side are respectively fixedly connected to the two second fixed shafts, the two second fixed shafts are respectively socketed with the second circular holes opened on the two rotating plates, and the upper and lower ends of the opposite sides of the two rotating plates are fixedly connected with the third fixed shafts.

[0012] As a preferred technical solution of the utility model, the two third fixed shafts are respectively connected with the third circular holes opened at one end of the two push-pull plates, the other ends of the two push-pull plates are respectively connected with the two first fixed shafts through the fourth circular holes opened, the other two third fixed shafts are respectively connected with the fifth circular holes opened at one end of the two reverse pull plates, and the other ends of the two reverse pull plates are respectively connected with the two fourth fixed shafts through the sixth circular holes opened.

[0013] As a preferred technical solution of the utility model, the two fourth fixed shafts are respectively fixedly connected to the front and rear sides of the sliding plate, the sliding plate is sleeved on the third connecting tube, the left side of the sliding plate is fixedly connected to two linearly symmetrical second sliding rail rods, the two second sliding rail rods are respectively sleeved with the two seventh circular holes opened on the left second stabilizing plate, and the free ends of the two second sliding rail rods are fixedly connected with second limiting rings.

[0014] As a preferred technical solution of the utility model, the two snap-on components are arranged to be symmetrical with each other and both include a reverse pull ring, and the reverse pull ring is respectively connected with the two first slide rail rings or the two second slide rail rods through two linearly symmetrical eighth circular holes, and the reverse pull ring is connected with two snap-on plates arranged in a semicircular symmetrical shape, and the opposite sides of the two snap-on plates are respectively fixedly connected with the two conical parts.

[0015] As a preferred technical solution of the utility model, the opposite sides of the two snap-on plates are fixedly connected with a plurality of slot blades, the opposite side ends of the two snap-on plates are respectively fixedly connected with the two limit plates, the two limit plates are both arranged in an L-shape, the two limit plates are respectively socketed with the two rectangular holes opened on the reverse pull ring, and the sides of the two limit plates are fixedly connected with limit frames.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides a fixing component, a reverse thrust component and two buckling components, which can make the two buckling components clamp the two required pipe fittings accordingly, and then pull the fixing component to drive the reverse thrust component to drive the two buckling components to slide and squeeze the buckling plate, so that the groove blade on the buckling plate is clamped with the groove opened on the pipe fitting, and then the water supply can be turned on, so that the water pressure pushes the blocking ring to slide in the sliding component, thereby driving the sliding pipe and the fixing component to slide as a whole, and at the same time driving the first slide rail rod to perform secondary tightening and buckling of one of the buckling components, and at the same time the fixing component also drives the reverse thrust component to drive the second slide rail rod to perform secondary buckling of the buckling plate on the other buckling component, thereby enhancing the clamping and tensile resistance of the pipe fitting, so that the structure can automatically form a self-locking state by relying on the water pressure in the pipe fitting when in use, thereby maintaining the stability and sealing effect of the connection during long-term use, and is convenient for use in fire protection pipe connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the fixing assembly of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sliding assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the thrust reverser assembly of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the buckle assembly of the utility model.

[0023] In the figure: 1 fixed component, 11 second connecting tube, 111 first inner ring, 12 sliding component, 121 sliding tube, 122 blocking ring, 123 second inner ring, 124 sealing ring, 125 linkage ring, 13 fixed ring, 14 first slide rail rod, 15 fixed block, 16 first fixed shaft, 2 reverse thrust component, 21 third connecting tube, 211 third inner ring, 22 second stable plate, 23 second fixed shaft, 24 rotating plate, 241 third fixed shaft, 25 push-pull plate, 26 reverse pull plate, 27 sliding plate, 271 fourth fixed shaft, 28 second slide rail rod, 3 buckle component, 31 reverse pull ring, 32 buckle plate, 321 tapered portion, 322 slot blade, 323 limit plate, 4 first connecting tube, 41 first stable plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The utility model provides a technical solution for the fire protection pipeline groove pipe connection structure: it includes a fixed component 1, two buckle components 3, a reverse thrust component 2 and a first connecting pipe 4, the fixed component 1 is connected to the reverse thrust component 2 and the first connecting pipe 4, the outer wall of the first connecting pipe 4 is fixedly connected to the first stabilizing plate 41, the reverse thrust component 2 and the fixed component 1 are respectively connected to the two buckle components 3 at the opposite ends, the fixed component 1 includes a second connecting pipe 11, the second connecting pipe 11 is connected to the sliding component 12, the second connecting pipe 11 is sleeved with the first connecting pipe 4, and the right end of the inner wall of the first connecting pipe 4 is fixedly connected with a first sealing ring.

[0026] The outer wall of the second connecting tube 11 is fixedly connected to the fixing ring 13, and two linearly symmetrical first slide rails 14 are fixedly connected to the fixing ring 13. The free ends of the two first slide rails 14 are fixedly connected to the first limiting rings. The two first slide rails 14 are respectively sleeved with two first circular holes opened on the first stabilizing plate 41. The left end of the outer wall of the second connecting tube 11 is fixedly connected to two vertically and frontally symmetrical fixing blocks 15, and the opposite sides of the two fixing blocks 15 are respectively fixedly connected to the two first fixed shafts 16.

[0027] The sliding assembly 12 includes a sliding tube 121 sleeved inside the second connecting tube 11, and a blocking ring 122 is fixedly connected to the right end of the inner wall of the sliding ring 121. The outer wall surface of the sliding tube 121 is fixedly connected to the two second inner rings 123 and the linkage ring 125. The outer wall surface of the sliding tube 121 is sleeved with the two sealing rings 124. The flow space of the blocking ring 122 in the sliding assembly 12 is compressed by water pressure, thereby increasing the water pressure and pushing the sliding tube 121 to slide. The sliding tube 121 drives the fixed assembly 12 to slide as a whole, and at the same time drives the first sliding rail rod 14 to tighten and buckle the two buckling plates 32 on the reverse pull ring 31 on one of the buckling assemblies 3 for a second time. At the same time, the fixed assembly 1 also drives the reverse thrust assembly 2 to drive the second sliding rail rod 28 to buckle the buckling plate 32 on the other buckling assembly 3 for a second time, thereby enhancing the clamping and tensile resistance of the pipe fitting. In this way, the structure can automatically form a self-locking state by relying on the water pressure in the pipe fitting when in use, thereby maintaining the stability and sealing effect of the connection during long-term use.

[0028] The two sealing rings 124 are located between the two second inner rings 123 and the linkage ring 125. The linkage ring 125 is fixedly connected to the left side surface of the second connecting tube 11. The right sealing ring 124 is located between the first inner ring 111 fixedly connected to the inner wall of the left end of the second connecting tube 11 and the right second inner ring 123, so that the right sealing ring 124 can achieve a sealing effect on the first connecting tube 4 and the sliding tube 121 when they are subjected to sliding extrusion.

[0029] The reverse thrust assembly 2 includes a third connecting tube 21, the right side of the outer wall of the third connecting tube 21 is fixedly connected to the third inner ring 211, the third inner ring 211 is sleeved with the left end of the first sliding tube 121, the third inner ring 211 and the left side of the sliding tube 121 are sleeved between the second inner ring 123 inside the third connecting tube 21 and correspond to the left sealing ring 124, so that the left sealing ring 124 can squeeze the third connecting tube 21 and the sliding tube 121 when they slide, thereby improving the sealing effect of the connection.

[0030] The outer wall surface of the third connecting tube 21 is fixedly connected to the two second stabilizing plates 22, and the front and rear side surfaces of the right second stabilizing plate 22 are respectively fixedly connected to the two second fixed shafts 23, and the two second fixed shafts 23 are respectively sleeved with the second circular holes opened on the two rotating plates 24, and the upper and lower ends of the opposite sides of the two rotating plates 24 are fixedly connected with the third fixed shafts 241, and the left end of the inner wall of the third connecting tube 21 is fixedly connected with the second sealing ring, which can form a connecting sealing effect for the pipe fitting.

[0031] The two third fixed shafts 241 are respectively connected with the third circular holes opened on one end of the two push-pull plates 25, and the other ends of the two push-pull plates 25 are respectively connected with the two first fixed shafts 16 through the fourth circular holes opened. The other two third fixed shafts 241 are respectively connected with the fifth circular holes opened on one end of the two reverse pull plates 26, and the other ends of the two reverse pull plates 26 are respectively connected with the two fourth fixed shafts 271 through the sixth circular holes opened. The two buckle plates 32 on the buckle assembly 3 clamp the pipe fittings, and make the pipe fittings penetrate into the first connection tube 4 and contact with the first sealing ring, and then pull the fixing assembly 1 as a whole to slide along the first connection tube 4, so that the fixing assembly 1 slides and drives the first The slide rail rod 14 pulls the reverse pull ring 31 on the snap-on component 3, so that the reverse pull ring 31 squeezes the conical portion 321 on the two snap-on plates 32, so that the two snap-on plates 32 are close to each other, and at the same time, the groove blade 322 inside the snap-on plate 32 is also clamped with the groove on the pipe fitting, so that the snap-on component 3 clamps and fixes the pipe fitting, and at the same time, the fixed component 1 moves to drive the push-pull plate 25 on the reverse push component 2 to rotate the rotating plate 24, so that the rotating plate 24 drives the reverse pull plate 26 to drive the sliding plate 27 to slide in the opposite direction, so that the sliding plate 27 can drive the second slide rail rod 28 to move in the opposite direction, so that the other snap-on component 3 can clamp and fix the linked pipe fitting.

[0032] The two fourth fixed shafts 271 are respectively fixedly connected to the front and rear sides of the sliding plate 27, and the sliding plate 27 is sleeved on the third connecting tube 21. The left side of the sliding plate 27 is fixedly connected to two linearly symmetrical second slide rails 28. The two second slide rails 28 are respectively sleeved with the two seventh circular holes opened on the left second stabilizing plate 22. The free ends of the two second slide rails 28 are fixedly connected with second limiting rings, which can make the second slide rails 28 slide to drive the limiting rings to form a pulling force on the reverse pull ring 31, thereby driving the reverse pull ring 31 to compress and squeeze the tapered portion 321 on the buckle plate 32, thereby promoting the two buckle plates 32 to approach each other to clamp and fix the pipe fittings.

[0033] The two buckling components 3 are arranged to be symmetrical with each other and both include a reverse pull ring 31. The reverse pull ring 31 is respectively connected to the two first slide rail rings 14 or the two second slide rail rods 28 through two linearly symmetrical eighth circular holes. Two buckling plates 32 arranged to be semicircularly symmetrical are connected inside the reverse pull ring 31. The opposite sides of the two buckling plates 32 are respectively fixedly connected to the two conical portions 321.

[0034] The opposite sides of the two snap plates 32 are fixedly connected with multiple groove blades 322, which can make the groove blades 322 get stuck in the groove when being squeezed by the snap plates 32, forming a tensile fixing effect, and the opposite side ends of the two snap plates 32 are fixedly connected with two limit plates 323 respectively, and the two limit plates 323 are both set to be L-shaped, and the two limit plates 323 are respectively connected to the two rectangular holes opened on the reverse pull ring 31, and the sides of the two limit plates 323 are fixedly connected with limit frames, which can make the two snap plates 32 slide in the rectangular holes on the reverse pull ring 31 by relying on the limit plates 323 to cope with the displacement space when the reverse pull ring 31 drives the extrusion, and secondly, on the one hand, it can prevent the snap plates 32 from detaching and causing loss when not in use, and on the other hand, it can make the snap plates 32 convenient to clamp when buckling and fixing the pipe fittings, thereby improving the convenience of operation.

[0035] The operating steps of the utility model are:

[0036] The two buckling plates 32 on the buckling assembly 3 clamp the pipe fittings, and make the pipe fittings penetrate into the first connecting tube 4 and contact the first sealing ring, then pull the fixing assembly 1 as a whole to slide along the first connecting tube 4, so that the fixing assembly 1 slides and drives the first slide rail rod 14 to pull the reverse pull ring 31 on the buckling assembly 3, so that the reverse pull ring 31 squeezes the conical parts 321 on the two buckling plates 32, so that the two buckling plates 32 are close to each other, and at the same time, the groove blades 322 inside the buckling plates 32 are also clamped with the grooves on the pipe fittings, so that the buckling assembly 3 clamps and fixes the pipe fittings, and at the same time, the fixing assembly 1 moves and drives the push-pull plate 25 on the reverse push assembly 2 to rotate the rotating plate 24, so that the rotating plate 24 drives the reverse pull plate 26 to drive the sliding plate 27 to slide in the opposite direction, so that the sliding plate 27 can drive the second slide rail rod 28 to move in the opposite direction, so that the other buckling assembly 3 can clamp and fix the connected pipe fittings;

[0037] Then the water supply to the pipe can be opened, so that the water pressure in the sliding component 12 is compressed by the flow space of the blocking ring 122, thereby increasing the water pressure and pushing the sliding tube 121 to slide. The sliding tube 121 drives the fixed component 12 to slide as a whole, and at the same time drives the first slide rail rod 14 to tighten and buckle the two buckling plates 32 with the reverse pull ring 31 on one of the buckling components 3 for a second time. At the same time, the fixed component 1 also drives the reverse thrust component 2 to drive the second slide rail rod 28 to buckle the buckling plate 32 on the other buckling component 3 for a second time, thereby enhancing the clamping and tensile resistance of the pipe. In this way, the structure can automatically form a self-locking state by relying on the water pressure in the pipe when in use, thereby maintaining the stability of the connection and the sealing effect during long-term use.

[0038] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Fire protection pipeline groove pipe fitting connection structure, characterized by: The invention comprises a fixed component (1), two buckle components (3), a reverse thrust component (2) and a first connecting tube (4), wherein the fixed component (1) is connected to both the reverse thrust component (2) and the first connecting tube (4), the outer wall surface of the first connecting tube (4) is fixedly connected to a first stabilizing plate (41), the reverse thrust component (2) and the fixed component (1) are respectively connected to the two buckle components (3) at opposite ends, the fixed component (1) comprises a second connecting tube (11), the inside of the second connecting tube (11) is connected to the sliding component (12), the inside of the second connecting tube (11) is sleeved with the first connecting tube (4), and the right end of the inner wall of the first connecting tube (4) is fixedly connected to a first sealing ring.

2. The fire protection pipeline groove pipe fitting connection structure according to claim 1, characterized in that: The outer wall of the second connecting tube (11) is fixedly connected to the fixing ring (13), and two linearly symmetrical first slide rails (14) are fixedly connected to the fixing ring (13), and the free ends of the two first slide rails (14) are fixedly connected to the first limiting rings, and the two first slide rails (14) are respectively sleeved with two first circular holes opened on the first stabilizing plate (41), and the left end of the outer wall of the second connecting tube (11) is fixedly connected to two vertically symmetrical front-to-back fixing blocks (15), and the opposite side surfaces of the two fixing blocks (15) are respectively fixedly connected to the two first fixing shafts (16).

3. The fire protection pipeline groove pipe fitting connection structure according to claim 1, characterized in that: The sliding assembly (12) comprises a sliding tube (121) sleeved inside the second connecting tube (11); a blocking ring (122) is fixedly connected to the right end of the inner wall of the sliding tube (121); the outer wall surface of the sliding tube (121) is fixedly connected to two second inner rings (123) and a linkage ring (125); and the outer wall surface of the sliding tube (121) is sleeved with two sealing rings (124).

4. The fire protection pipeline groove pipe fitting connection structure according to claim 3 is characterized in that: The two sealing rings (124) are located between the two second inner rings (123) and the linkage ring (125); the linkage ring (125) is fixedly connected to the left side surface of the second connecting tube (11); the sealing ring (124) on the right side is located between the first inner ring (111) fixedly connected to the inner wall of the left end of the second connecting tube (11) and the second inner ring (123) on the right side.

5. The fire protection pipeline groove pipe fitting connection structure according to claim 1, characterized in that: The reverse thrust assembly (2) comprises a third connecting tube (21), the right side of the outer wall of the third connecting tube (21) is fixedly connected to the third inner ring (211), the third inner ring (211) is sleeved with the left end of the sliding tube (121), and the third inner ring (211) and the left side of the sliding tube (121) are sleeved between the second inner ring (123) inside the third connecting tube (21) and correspond to the left sealing ring (124).

6. The fire protection pipeline groove pipe fitting connection structure according to claim 5, characterized in that: The outer wall surface of the third connecting tube (21) is fixedly connected to the two second stabilizing plates (22); the front and rear side surfaces of the second stabilizing plate (22) on the right side are respectively fixedly connected to the two second fixed shafts (23); the two second fixed shafts (23) are respectively sleeved with the second circular holes provided on the two rotating plates (24); the upper and lower ends of the opposite side surfaces of the two rotating plates (24) are fixedly connected to the third fixed shafts (241).

7. The fire protection pipeline groove pipe fitting connection structure according to claim 6, characterized in that: Two of the third fixed shafts (241) are respectively sleeved with third circular holes opened at one end of the two push-pull plates (25); the other ends of the two push-pull plates (25) are respectively sleeved with the two first fixed shafts (16) through fourth circular holes opened thereon; the other two third fixed shafts (241) are respectively sleeved with fifth circular holes opened at one end of the two reverse pull plates (26); the other ends of the two reverse pull plates (26) are respectively sleeved with the two fourth fixed shafts (271) through sixth circular holes opened thereon.

8. The fire protection pipeline groove pipe fitting connection structure according to claim 7, characterized in that: The two fourth fixed shafts (271) are respectively fixedly connected to the front and rear side surfaces of the sliding plate (27); the sliding plate (27) is sleeved on the third connecting tube (21); the left side surface of the sliding plate (27) is fixedly connected to two linearly symmetrical second slide rails (28); the two second slide rails (28) are respectively sleeved to the two seventh circular holes opened on the left second stabilizing plate (22); and the free ends of the two second slide rails (28) are fixedly connected to the second limiting ring.

9. The fire protection pipeline groove pipe fitting connection structure according to claim 1, characterized in that: The two buckle assemblies (3) are arranged symmetrically to each other and both include a reverse pull ring (31). The reverse pull ring (31) is respectively sleeved with two first slide rails (14) or two second slide rails (28) through two linearly symmetrical eighth circular holes. Two buckle plates (32) arranged in a semicircular symmetrical shape are sleeved inside the reverse pull ring (31). The opposite side surfaces of the two buckle plates (32) are respectively fixedly connected to two conical portions (321).

10. The fire protection pipeline groove pipe fitting connection structure according to claim 9, characterized in that: The opposite sides of the two buckle plates (32) are fixedly connected with a plurality of slot blades (322); the opposite side ends of the two buckle plates (32) are respectively fixedly connected with two limit plates (323); the two limit plates (323) are both arranged in an L-shape; the two limit plates (323) are respectively sleeved with two rectangular holes opened on the reverse pull ring (31); and the sides of the two limit plates (323) are fixedly connected with limit frames.

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