Supporting and connecting structure for underground communication pipeline

Abstract

According to the technical scheme, the supporting and connecting structure for the underground communication pipeline is characterized in that the supporting and connecting structure comprises a bottom plate, a connecting pipe is arranged on the top face of the bottom plate, connectors are arranged at the two ends of the connecting pipe, and the two ends of each connector are movably sleeved with pipelines; the first buffer assembly is arranged on the top face of the bottom plate and used for counteracting downward pressure applied to the pipeline to a certain degree, by arranging the sealing bin, when the pipeline is subjected to the downward pressure from the upper portion, the pressure is firstly transmitted to the supporting frame, the upper buffer block moves downwards along with the supporting frame, and then the piston block in the air cavity fixedly connected with the upper buffer block is driven to move downwards together; the lower buffer block tends to move upwards relative to the sealing bin and drives the piston blocks connected with the lower buffer block to move upwards, and the two piston blocks in the air cavity move oppositely, so that air in the air cavity is compressed, downward pressure energy borne by the pipeline is absorbed and converted step by step, and direct impact of pressure on the pipeline is effectively buffered.

Description

Technical Field

[0001] The present invention relates to the technical field of communication pipelines, and in particular to a supporting connection structure for underground communication pipelines. Background Art

[0002] When carrying out underground communication cable construction, it is often necessary to pass the communication cables through underground communication pipes and use the communication pipes to provide protection for the communication cables. However, since the laying distance of communication cables is usually long, the communication pipes outside the communication cables usually need to be set up in several groups along the length of the communication cables. The adjacent groups of communication pipes are connected by supporting connection structures to connect the several groups of communication pipes into a whole.

[0003] According to the Chinese patent with publication number: CN218997662U, a supporting connection structure for underground communication pipelines is disclosed, including an underground communication pipeline body, a fixing mechanism, a first buffer mechanism and a second buffer mechanism, wherein the fixing mechanism is located at the outer end of the underground communication pipeline body, the first buffer mechanism is located at the lower end of the fixing mechanism, and the second buffer mechanism is located at the outer end of the first buffer mechanism, and the first buffer mechanism includes a buffer plate, a buffer rod, a sleeve, a buffer spring and a limit block, and the buffer plate is located below the underground communication pipeline body. The supporting connection structure for underground communication pipelines, by setting the first buffer mechanism, will drive the buffer plate, the buffer rod and the limit block to move downward along the sleeve when the underground communication pipeline body is subjected to pressure, and drive the buffer spring to compress, and the buffer spring can absorb the pressure on the underground communication pipeline body to prevent the underground communication pipeline body from being directly damaged or even broken by heavy pressure.

[0004] At present, there are still some shortcomings in the supporting connection structure used for underground communication pipelines. For example, when the spring reaches a certain length of use, the crystal structure inside the metal will gradually change during the repeated expansion and contraction process, causing fatigue. The elastic coefficient will decrease, reducing the effective energy originally used for buffering, ultimately greatly reducing the buffering effect and making it impossible to ensure the stable operation of the underground communication pipeline. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a supporting connection structure for underground communication pipelines, which solves the problems mentioned in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A supporting connection structure for an underground communication pipeline, comprising:

[0008] A bottom plate, the top surface of which is provided with a connecting pipe, both ends of which are provided with connecting heads, and both ends of the connecting heads are movably sleeved with pipes;

[0009] A support frame is arranged on the bottom surface of the connector and is used to support the connecting pipe and the pipeline;

[0010] A first buffer assembly is arranged on the top surface of the bottom plate, and is used to offset a certain degree of downward pressure applied to the pipeline. The first buffer assembly includes a mounting frame, a sealing chamber is fixedly installed on the inner bottom surface of the mounting frame, an air cavity is arranged inside the sealing chamber, and movable openings are opened on the top and bottom surfaces of the sealing chamber, an upper buffer block is fixedly installed on the bottom surface of the support frame, and the upper buffer block is movably sleeved with the movable opening, a lower buffer block is fixedly installed on the top surface of the bottom plate, and the lower buffer block is movably sleeved with another movable opening, and two piston blocks are arranged inside the air cavity, and the upper buffer block and the lower buffer block are fixedly connected to the two piston blocks respectively;

[0011] A second buffer assembly is provided on both sides of the mounting frame and is used to further buffer the downward force;

[0012] A first sealing member, disposed on the outside of the piston block, for preventing gas leakage in the gas cavity;

[0013] A second sealing member is disposed outside the upper buffer block and the lower buffer block to prevent dust particles from adhering thereto;

[0014] The fastener is arranged on the outer circumferential wall surface of the connector and is used to fasten two pipes together.

[0015] Preferably, the second buffer assembly includes: two connecting blocks, the two connecting blocks are respectively fixedly mounted on both sides of the mounting frame, a sliding opening is opened on one side of the connecting block, a sliding block is arranged inside the sliding opening, connecting shafts are fixedly mounted on both sides of the sliding block, a plurality of first mounting plates are fixedly mounted on the top surface of the base plate, each two of the first mounting plates form a group, a first connecting column is fixedly mounted between each group of the first mounting plates, the outside of the first connecting column is hingedly connected to the first connecting rod, and the other end of the first connecting rod is hingedly connected to the connecting shaft, a plurality of second mounting plates are fixedly mounted on the bottom surface of the support frame, each two of the second mounting plates form a group, a second connecting column is fixedly mounted between each group of the second mounting plates, the outside of the second connecting column is hingedly connected to the second connecting rod, and the other end of the second connecting rod is hingedly connected to the connecting shaft.

[0016] Preferably, air pressure tubes are fixedly installed on both sides of the connecting block, a first buffer rod is fixedly installed on one side of the sliding block, a first piston head is movably installed inside the air pressure tube, the first buffer rod and the first piston head are fixedly connected together, a second buffer rod is movably sleeved on the other end of the air pressure tube, a through hole is opened on one side of the sliding block, buffer holes are opened on both sides of the sealing chamber and the mounting frame, the second buffer rod passes through the through hole and extends to the inside of the buffer hole, and second piston heads are fixedly installed on both ends of the second buffer rod.

[0017] Preferably, the top and bottom surfaces of the sliding opening are provided with guide grooves, and the top and bottom surfaces of the sliding block are fixedly mounted with limit blocks, and the limit blocks are movably sleeved with the guide grooves.

[0018] Preferably, the first sealing member comprises: a sealing groove, the sealing groove is opened on four sides of the piston block, and a sealing ring is fixedly bonded to one side of the interior of the sealing groove.

[0019] Preferably, the second sealing member comprises: two dustproof shells, the two dustproof shells are respectively fixedly mounted on the top surface of the base plate and the top surface of the mounting frame, the internal movable sleeve of the dustproof shell is provided with a connecting shell, the connecting shell is respectively fixedly connected to the sealing bin and the supporting frame, and limiting grooves are provided on the four inner sides of the dustproof shell.

[0020] Preferably, rubber blocks are arranged outside the upper buffer block and the lower buffer block, and the rubber blocks are adhered to the piston block.

[0021] Preferably, the fastener comprises: a plurality of fastening holes, wherein the plurality of fastening holes are opened on the outer circumferential wall surface of the connecting head, and the internal threads of the fastening holes are connected with fastening bolts.

[0022] In summary, the present invention mainly has the following beneficial effects: by setting up a sealing chamber, firstly, when the pipeline is subjected to downward pressure from above, the pressure is quickly transmitted to the support frame, at this time, the upper buffer block on the bottom surface of the support frame is tightly matched with the movable port on the top surface of the sealing chamber, and as the pressure is applied, the upper buffer block moves downward, thereby accurately driving the piston block fixedly connected to it in the air cavity to move downward synchronously; at the same time, the lower buffer block on the top surface of the bottom plate, due to its movable sleeve relationship with the movable port on the bottom surface of the sealing chamber, moves upward relative to the sealing chamber during the process of the pipeline being pressurized, prompting the piston block connected to it to move upward; the two piston blocks in the air cavity move toward each other, and the gas is compressed. This process is just like an efficient energy absorption pool, which gradually converts the downward pressure on the pipeline into the internal energy of the gas, effectively buffering The direct impact of pressure on the pipeline is reduced, and after the pressure is released, the compressed gas pushes the piston block back to its position by virtue of its own elastic potential energy, driving the upper and lower buffer blocks back to their initial positions; secondly, the structure composed of the sliding block and its associated components has excellent coping capabilities for the lateral force and irregular external force impact faced by the pipeline. When the pipeline encounters an external force impact, no matter the force comes from the vertical direction above or the lateral force caused by changes in the surrounding environment, the pressure is first borne by the support frame. As the support frame moves under the force, several second mounting plates fixed on its bottom surface and the second connecting columns between them move in coordination, driving the second connecting rod hinged thereto to rotate. Since the other end of the second connecting rod is hinged to the connecting shafts on both sides of the sliding block, the sliding block is quickly displaced in the sliding port of the connecting block. At the same time, several first mounting plates on the top surface of the base plate and the first connecting columns therebetween also play a role synchronously. The first connecting rod and the second connecting rod work closely together to disperse and transform the impact force to avoid structural damage caused by concentration of force at one point. At the same time, as the support frame moves under force, it drives the second buffer assembly connected to it to operate collaboratively. At this time, the sliding block becomes a key force-bearing and force transmission node. When the sliding block is displaced under force, the first buffer rod fixed on one side of it moves synchronously, and the first piston head moves in the air pressure tube. The gas on one side of the first piston head is compressed and the pressure increases. The second buffer rod moves accordingly in the air pressure tube. When the second piston head approaches the buffer hole, the air pressure in the air cavity will push the second piston head in the opposite direction. A buffer force is generated between the two, which plays a role in weakening the impact of external force. As long as the gas in the air cavity and the air pressure tube is well sealed, its buffering performance can be stable for a long time, which effectively guarantees the structural integrity of the pipeline and greatly reduces the risk of damage due to pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic plan view of the sealed chamber of the present invention;

[0025] Figure 3 It is a schematic diagram of the connection block structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the sliding block split structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the upper buffer block of the present invention;

[0028] Figure 6 yes Figure 2 A is an enlarged schematic diagram of the local structure at center A;

[0029] Figure 7 It is a schematic diagram of the connector structure of the present invention.

[0030] 1. The bottom plate; 2. The connecting pipe; 3. The connecting head; 4. The pipeline; 5. The supporting frame; 6. The mounting frame; 7. The sealing chamber; 8. The air cavity; 9. The movable opening; 10. The upper buffer block; 11. The lower buffer block; 12. The connecting block; 13. The sliding opening; 14. The sliding block; 15. The first mounting plate; 16. The first connecting column; 17. The first connecting rod; 18. The connecting shaft; 19. The second mounting plate; 20. The second connecting column; 21. The second connecting rod; 22. The piston block; 23. The sealing groove; 24. The sealing ring; 25. The air pressure tube; 26. The first buffer rod; 27. The first piston head; 28. The second buffer rod; 29. ​​The buffer hole; 30. The through hole; 31. The second piston head; 32. The rubber block; 33. The guide groove; 34. The limit block; 35. The fastening hole; 36. The fastening bolt; 37. The dust cover; 38. The connecting shell; 39. The limit groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] refer to Figure 1-Figure 7 , a supporting connection structure for underground communication pipelines, comprising:

[0033] A bottom plate 1, a connecting pipe 2 is arranged on the top surface of the bottom plate 1, both ends of the connecting pipe 2 are provided with connecting heads 3, and both ends of the connecting heads 3 are movably sleeved with pipes 4;

[0034] A support frame 5 is provided on the bottom surface of the connector 3 and is used to support the connecting pipe 2 and the pipeline 4;

[0035] The first buffer assembly is arranged on the top surface of the bottom plate 1, and is used to offset a certain degree of downward pressure on the pipeline 4. The first buffer assembly includes a mounting frame 6, a sealing chamber 7 is fixedly installed on the inner bottom surface of the mounting frame 6, an air cavity 8 is arranged inside the sealing chamber 7, and a movable opening 9 is opened on the top and bottom surfaces of the sealing chamber 7. An upper buffer block 10 is fixedly installed on the bottom surface of the support frame 5, and the upper buffer block 10 is movably sleeved with the movable opening 9. A lower buffer block 11 is fixedly installed on the top surface of the bottom plate 1, and the lower buffer block 11 is movably sleeved with another movable opening 9. Two piston blocks 22 are arranged inside the air cavity 8, and the upper buffer block 10 and the lower buffer block 11 are respectively fixedly connected to the two piston blocks 22;

[0036] The second buffer assembly is provided on both sides of the mounting frame 6 and is used to further buffer the downward force;

[0037] A first sealing member is provided on the outside of the piston block 22 to prevent gas leakage in the gas cavity 8;

[0038] A second sealing member is disposed outside the upper buffer block 10 and the lower buffer block 11 to prevent dust particles from adhering thereto;

[0039] A fastener, arranged on the outer circumferential wall surface of the connector 3, for fastening the two pipes 4 together;

[0040] By setting the sealing chamber 7, when the pipeline 4 is subjected to downward pressure from above, the pressure is first transmitted to the support frame 5. Since the upper buffer block 10 on the bottom surface of the support frame 5 is movably sleeved with the movable opening 9 on the top surface of the sealing chamber 7, the upper buffer block 10 will move downward accordingly, thereby driving the piston block 22 in the air cavity 8 fixedly connected thereto to move downward together. At the same time, the lower buffer block 11 fixedly installed on the top surface of the bottom plate 1 is also movably sleeved with the movable opening 9 on the bottom surface of the sealing chamber 7. During the process of the pipeline 4 being subjected to pressure, the lower buffer block 11 has an upward movement tendency relative to the sealing chamber 7, driving the piston block 22 connected thereto to move upward, and the two piston blocks 22 in the air cavity 8 2 move in opposite directions, so that the gas in the air cavity 8 is compressed. The gas compression process is like an energy absorption pool, which gradually absorbs and transforms the downward pressure energy on the pipeline 4, effectively buffering the direct impact of the pressure on the pipeline 4. After the pressure is released, the compressed gas will push the piston block 22 back to its original position by its own elastic potential energy, and drive the upper buffer block 10 and the lower buffer block 11 back to the initial position to prepare for the next buffer. As long as the gas in the air cavity 8 is well sealed, its buffering performance can remain relatively stable, effectively offsetting the downward pressure on the pipeline 4 for a long time, ensuring the structural integrity of the pipeline 4, and greatly reducing the risk of the pipeline 4 being damaged due to pressure.

[0041] As a further solution of the present invention, the second buffer assembly includes: two connecting blocks 12, the two connecting blocks 12 are respectively fixedly mounted on both sides of the mounting frame 6, a sliding opening 13 is opened on one side of the connecting block 12, a sliding block 14 is arranged inside the sliding opening 13, and connecting shafts 18 are fixedly mounted on both sides of the sliding block 14, a plurality of first mounting plates 15 are fixedly mounted on the top surface of the bottom plate 1, each two first mounting plates 15 form a group, a first connecting column 16 is fixedly mounted between each group of first mounting plates 15, the first connecting column 16 is externally hingedly connected to a first connecting rod 17, and the other end of the first connecting rod 17 is hingedly connected to the connecting shaft 18, a plurality of second mounting plates 19 are fixedly mounted on the bottom surface of the support frame 5, each two second mounting plates 19 form a group, a second connecting column 20 is fixedly mounted between each group of second mounting plates 19, the second connecting column 20 is externally hingedly connected to a second connecting rod 21, and the other end of the second connecting rod 21 is hingedly connected to the connecting shaft 18;

[0042] By setting the sliding block 14, when the pipeline 4 encounters an external force impact, whether it is a vertical pressure from above or a lateral force caused by changes in the surrounding environment, the pressure is first borne by the support frame 5. At this time, as the support frame 5 moves under the force, a plurality of second mounting plates 19 fixed on the bottom surface thereof and the second connecting columns 20 therebetween move synchronously, driving the second connecting rod 21 hinged thereto to rotate. Since the other end of the second connecting rod 21 is hinged to the connecting shafts 18 on both sides of the sliding block 14, this causes the sliding block 14 to displace in the sliding opening 13 of the connecting block 12. At the same time, the second connecting rod 21 fixed on the top surface of the bottom plate 1 A number of first mounting plates 15 and the first connecting columns 16 therebetween also play a role in the force-bearing process. The first connecting rod 17 and the second connecting rod 21 work together to disperse and transform the impact force on the pipeline 4 to avoid the impact force being concentrated on a certain point and causing structural damage. After the impact force is weakened or disappears, the sliding block 14, the connecting rods and the support frame 5 are gradually returned to their initial state under the action of the elastic restoring force of the first buffer component, in order to cope with lateral forces and irregular external force impacts, thereby improving the stability of the pipeline 4 in a complex underground environment and effectively reducing the risk of displacement, deformation or even rupture of the pipeline 4 due to external forces.

[0043] As a further solution of the present invention, air pressure tubes 25 are fixedly installed on both sides of the connecting block 12, a first buffer rod 26 is fixedly installed on one side of the sliding block 14, a first piston head 27 is movably installed inside the air pressure tube 25, the first buffer rod 26 and the first piston head 27 are fixedly connected together, and a second buffer rod 28 is movably sleeved on the other end of the air pressure tube 25, a through hole 30 is opened on one side of the sliding block 14, buffer holes 29 are opened on both sides of the sealing chamber 7 and the mounting frame 6, the second buffer rod 28 passes through the through hole 30 and extends to the inside of the buffer hole 29, and second piston heads 31 are fixedly installed on both ends of the second buffer rod 28.

[0044] By setting up the pneumatic tube 25, when the pipeline 4 encounters an external force impact, as the support frame 5 moves under the force, it drives the second buffer component connected thereto to operate cooperatively. At this time, the sliding block 14 becomes a key force-bearing and force-transmitting node. When the sliding block 14 is displaced under the force, the first buffer rod 26 fixed on one side thereof moves synchronously, and the first piston head 27 moves in the pneumatic tube 25. The gas on one side of the first piston head 27 is compressed and the pressure increases. The second buffer rod 28 moves accordingly in the pneumatic tube 25. When the second piston head 31 approaches the buffer hole 29, the air pressure in the air cavity 8 pushes the second piston head 31 in the opposite direction, and a buffer force is generated between the two, which plays a role in weakening the external force impact.

[0045] As a further solution of the present invention, the top and bottom surfaces of the sliding opening 13 are provided with guide grooves 33, and the top and bottom surfaces of the sliding block 14 are fixedly installed with limit blocks 34, and the limit blocks 34 are movably sleeved with the guide grooves 33;

[0046] By setting the sliding block 14, the limit block 34 is tightly fitted with the guide groove 33, which can effectively limit the freedom of the sliding block 14 and prevent it from deviating from the normal working position due to abnormal external interference. This is beneficial to prevent the sliding block 14 from jumping out of the sliding opening 13, causing the entire second buffer assembly to fail and threatening the safety of the pipeline 4.

[0047] As a further solution of the present invention, the first sealing member includes: a sealing groove 23, the sealing groove 23 is opened on four sides of the piston block 22, and a sealing ring 24 is fixedly bonded to one side of the inner side of the sealing groove 23;

[0048] By providing the sealing ring 24, the good sealing performance of the sealing ring 24 prevents the air pressure in the air cavity 8 from leaking easily, avoiding a significant reduction in the buffering effect due to air pressure fluctuations, thereby ensuring the smooth operation of the underground pipeline 4 and reducing the risk of damage to the pipeline 4 due to buffer failure.

[0049] As a further solution of the present invention, the second sealing member includes: two dustproof shells 37, the two dustproof shells 37 are respectively fixedly mounted on the top surface of the bottom plate 1 and the top surface of the mounting frame 6, the internal movable sleeve of the dustproof shell 37 is provided with a connecting shell 38, the connecting shell 38 is respectively fixedly connected to the sealing chamber 7 and the supporting frame 5, and the inner four sides of the dustproof shell 37 are provided with limiting grooves 39;

[0050] By setting up the dustproof shell 37 and the complex underground environment, the connecting shell 38 can move flexibly within the limited range of the limiting groove 39 to ensure that the buffering action of the overall structure is not hindered. Dust will adhere to the dustproof shell 37 and the connecting shell 38, and a small amount of dust that breaks through will not be able to smoothly enter the interior of the connecting shell 38 due to the obstruction of the limiting groove 39, thereby protecting the core components such as the sealing chamber 7 and the air cavity 8 from pollution to the greatest extent.

[0051] As a further solution of the present invention, a rubber block 32 is disposed outside the upper buffer block 10 and the lower buffer block 11, and the rubber block 32 is adhered to the piston block 22;

[0052] By setting the rubber block 32, the rubber block 32 covers the outside of the upper buffer block 10 and the lower buffer block 11, thereby avoiding direct contact and friction between the upper buffer block 10 and the lower buffer block 11 and the top and bottom of the sealing chamber 7, and preventing scratches and wear on the surface of the buffer block due to friction, maintaining the structural integrity of the buffer block, and thus ensuring the reliability of the entire supporting structure, reducing the frequency of maintenance and replacement caused by component wear, and improving the durability of the upper buffer block 10 and the lower buffer block 11.

[0053] As a further solution of the present invention, the fastener comprises: a plurality of fastening holes 35, the plurality of fastening holes 35 are opened on the outer circumferential wall surface of the connector 3, and the internal threads of the fastening holes 35 are connected with fastening bolts 36;

[0054] By setting the fastening bolt 36 and putting one end of the pipe 4 on the connector 3, the operator screws the fastening bolt 36 into the fastening hole 35. As the bolt is gradually screwed in, the bolt head fits tightly against the outer wall of the pipe 4. The friction between the threads and the fastening force of the bolt are used to firmly fix the pipe 4 on the connector 3, providing a high-strength guarantee for the connection between the pipe 4 and the connector 3.

[0055] 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. A supporting connection structure for underground communication pipelines, characterized in that: include: A bottom plate (1), wherein a connecting pipe (2) is arranged on the top surface of the bottom plate (1), connecting heads (3) are arranged at both ends of the connecting pipe (2), and pipes (4) are movably sleeved at both ends of the connecting head (3); A support frame (5) is arranged on the bottom surface of the connector (3) and is used to support the connecting pipe (2) and the pipeline (4); A first buffer assembly is arranged on the top surface of the bottom plate (1) and is used to offset a certain degree of downward pressure applied to the pipeline (4). The first buffer assembly comprises a mounting frame (6). A sealing chamber (7) is fixedly mounted on the inner bottom surface of the mounting frame (6). An air cavity (8) is arranged inside the sealing chamber (7). A movable opening (9) is provided on the top and bottom surfaces of the sealing chamber (7). An upper buffer block (10) is fixedly mounted on the bottom surface of the support frame (5). The upper buffer block (10) and the movable opening (9) are movably sleeved together. A lower buffer block (11) is fixedly mounted on the top surface of the bottom plate (1). The lower buffer block (11) and the other movable opening (9) are movably sleeved together. Two piston blocks (22) are arranged inside the air cavity (8). The upper buffer block (10) and the lower buffer block (11) are respectively fixedly connected to the two piston blocks (22). A second buffer assembly is provided on both sides of the mounting frame (6) and is used to further buffer the downward force; A first sealing member, arranged on the outside of the piston block (22) and used to prevent gas leakage in the gas chamber (8); A second sealing member is arranged outside the upper buffer block (10) and the lower buffer block (11) and is used to prevent dust particles from adhering thereto; The fastener is arranged on the outer circumferential wall surface of the connector (3) and is used to fasten the two pipes (4) together.

2. A supporting connection structure for underground communication pipeline according to claim 1, characterized in that: The second buffer assembly comprises: two connecting blocks (12), the two connecting blocks (12) are respectively fixedly mounted on two sides of the mounting frame (6), a sliding opening (13) is opened on one side of the connecting block (12), a sliding block (14) is arranged inside the sliding opening (13), connecting shafts (18) are fixedly mounted on both sides of the sliding block (14), a plurality of first mounting plates (15) are fixedly mounted on the top surface of the bottom plate (1), every two of the first mounting plates (15) form a group, and a first connecting column (18) is fixedly mounted between each group of the first mounting plates (15). 16), the first connecting column (16) is externally hingedly connected to a first connecting rod (17), the other end of the first connecting rod (17) is hingedly connected to a connecting shaft (18), a plurality of second mounting plates (19) are fixedly mounted on the bottom surface of the support frame (5), each two of the second mounting plates (19) form a group, a second connecting column (20) is fixedly mounted between each group of the second mounting plates (19), the second connecting column (20) is externally hingedly connected to a second connecting rod (21), the other end of the second connecting rod (21) is hingedly connected to the connecting shaft (18).

3. A supporting connection structure for underground communication pipeline according to claim 2, characterized in that: Air pressure tubes (25) are fixedly installed on both sides of the connecting block (12), a first buffer rod (26) is fixedly installed on one side of the sliding block (14), a first piston head (27) is movably installed inside the air pressure tube (25), the first buffer rod (26) and the first piston head (27) are fixedly connected together, a second buffer rod (28) is movably sleeved on the other end of the air pressure tube (25), a through hole (30) is opened on one side of the sliding block (14), buffer holes (29) are opened on both sides of the sealing chamber (7) and the mounting frame (6), the second buffer rod (28) passes through the through hole (30) and extends to the inside of the buffer hole (29), and second piston heads (31) are fixedly installed on both ends of the second buffer rod (28).

4. A supporting connection structure for underground communication pipeline according to claim 2, characterized in that: The top and bottom surfaces of the sliding opening (13) are both provided with guide grooves (33), and the top and bottom surfaces of the sliding block (14) are both fixedly mounted with limit blocks (34), and the limit blocks (34) are movably sleeved together with the guide grooves (33).

5. The supporting connection structure for underground communication pipeline according to claim 1, characterized in that: The first sealing component comprises: a sealing groove (23), wherein the sealing groove (23) is provided on four sides of the piston block (22), and a sealing ring (24) is fixedly bonded to one side of the interior of the sealing groove (23).

6. A supporting connection structure for underground communication pipeline according to claim 1, characterized in that: The second sealing member comprises: two dustproof shells (37), the two dustproof shells (37) being fixedly mounted on the top surface of the base plate (1) and the top surface of the mounting frame (6), respectively; a connecting shell (38) is provided inside the movable sleeve of the dustproof shell (37), the connecting shell (38) being fixedly connected to the sealing chamber (7) and the supporting frame (5), respectively; and limiting grooves (39) are provided on four inner sides of the dustproof shell (37).

7. A supporting connection structure for underground communication pipeline according to claim 1, characterized in that: Rubber blocks (32) are arranged outside the upper buffer block (10) and the lower buffer block (11), and the rubber blocks (32) are bonded to the piston block (22).

8. The supporting connection structure for underground communication pipeline according to claim 1, characterized in that: The fastener comprises: a plurality of fastening holes (35), wherein the plurality of fastening holes (35) are opened on the outer circular wall surface of the connecting head (3), and the internal threads of the fastening holes (35) are connected with fastening bolts (36).

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