Miniature pipe-jacking interface fixing device

Abstract

The application discloses a micro pipe-jacking interface fixing device, which comprises a first pipe-jacking and a second pipe-jacking, the second pipe-jacking is provided with a clamping groove, the first pipe-jacking is provided with a clamping block matched with the clamping groove on one side, a sleeve is fixedly arranged outside the second pipe-jacking, a rotating groove is formed in the sleeve, a rotating ring is rotatably connected in the rotating groove, a sliding groove is formed in one side of the rotating ring, and a plurality of fixing assemblies are drivingly connected with the rotating ring through the sliding groove. The micro pipe-jacking interface fixing device provided by the application drives the first bevel gear to rotate through the rotation of the rotating shaft, so that the rotating ring rotates, the rotation of the rotating ring drives the rotating rod to rotate through the transmission cooperation of the second bevel gear, the third bevel gear and the fourth bevel gear, the rotation of the rotating rod drives the sliding plate to move, the movement of the sliding plate drives the fixing cylinder and the moving cylinder to move, and the moving cylinder moves in cooperation with the limiting rod, so that the pressing plate is formed in abutment with the first pipe-jacking.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of micro pipe jacking installation, in particular to a micro pipe jacking interface fixing device. BACKGROUND

[0002] The micro pipe jacking is a method for underground pipeline construction by using underground hollow steel pipes or plastic pipes, has the advantages of low cost, fast construction speed and small environmental impact, and is widely applied to the construction fields of urban roads, railways, tunnels and reservoirs, and has unique advantages in urban pipeline construction, and can avoid the problems of geological condition limitation and large construction difficulty usually encountered in traditional excavation construction.

[0003] The Chinese patent publication No. CN219119965U discloses a micro pipe jacking interface fixing device, which is characterized in that the interfaces of two micro pipe jacking are inserted into the connecting ports at the left and right ends of the connecting pipe, the push plate is pushed to the right, the push plate drives the insertion column to move to the right through the connecting plate, the insertion column is separated from the insertion hole, the spring is contracted, the push rod is pushed downward at this time, the push rod drives the top block to move through the mounting ring, the mounting plate moves outward under the pushing force of the top block, the slide column is driven to move outward through the mounting plate, the pin shaft slides and rotates in the internal avoiding slide groove, the spacing between the limiting columns is reduced, and finally the connection and fixation of the micro pipe jacking interface are realized.

[0004] The fixing process of the interface of the pipe jacking is relatively complicated in the scheme, the insertion column needs to be separated from the insertion hole by moving the push plate first, and then the push rod needs to be manually pushed downward after being separated, the insertion column and the insertion hole need to be kept separated at all times in the process, the push rod can drive the top block to move through the mounting ring to realize the fixation of the interface, and if one person fixes two pipe jacking, the operation is very inconvenient, and great inconvenience is brought to the construction. SUMMARY

[0005] The application aims to provide a micro pipe jacking interface fixing device to solve the problems in the background.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a micro pipe jacking interface fixing device, comprising a first pipe jacking and a second pipe jacking, the second pipe jacking is provided with a clamping groove, the first pipe jacking is provided with a clamping block matched with the clamping groove on one side, the outer side of the second pipe jacking is fixedly provided with a sleeve, the sleeve is provided with a rotating groove inside, a rotating ring is rotatably connected in the rotating groove, a slide groove is formed in one side of the rotating ring, and a plurality of fixing assemblies are drivingly connected with the rotating ring through the slide groove.

[0007] As a further scheme of the present application: the fixing assembly comprises a moving block, a plurality of moving grooves are formed on the outside of the sleeve, the moving block is in sliding connection with the moving grooves, a limiting block is fixedly arranged on one side of the moving block, the limiting block is in transmission connection with the sliding groove, and a fixing plate is fixedly connected to the bottom of the moving block.

[0008] As a further scheme of the present application: the rotating ring is designed in a bevel gear shape away from the sliding groove, and a first bevel gear is in transmission connection with one side of the rotating ring, a rotating shaft is fixedly connected to the center of the first bevel gear, and the rotating shaft is movably penetrated through the side wall of the sleeve.

[0009] As a further scheme of the present application: a fixing cylinder is arranged away from the first bevel gear on the side of the moving block, the fixing cylinder is movably clamped with the sleeve, a fixing ring is fixedly arranged in the fixing cylinder, a plurality of pressing plates are annularly fixedly arranged on one side of the fixing ring, and the pressing plates are made of elastic material.

[0010] As a further scheme of the present application: a moving cylinder is threadedly matched with the outside of the fixing cylinder, and one end of the moving cylinder is designed in a circular truncated cone shape.

[0011] As a further scheme of the present application: a curved groove is formed on the outside of the moving cylinder, a limiting rod is fixedly arranged in the sleeve, the limiting rod is in sliding connection with the curved groove, and the curved groove is formed around the outside of the moving cylinder.

[0012] As a further scheme of the present application: a sliding groove is formed on the side of the sleeve relative to the limiting rod, a sliding plate is in sliding connection in the sliding groove, and one end of the sliding plate away from the sliding groove is fixedly connected with the fixing cylinder.

[0013] As a further scheme of the present application: a rotating rod is threadedly matched and connected with one end of the sliding plate away from the fixing cylinder, and the rotating rod is movably penetrated through the sleeve in the transverse direction.

[0014] As a further scheme of the present application: a recess is formed on the side of the sleeve relative to the rotating ring, a vertical rod is movably arranged in the recess, a second bevel gear is fixedly connected to one end of the vertical rod, the second bevel gear is in transmission connection with one side of the rotating ring, a notch is formed in the sleeve in the transverse direction, the rotating rod is in rotation connection with the notch, the notch is in communication with the recess, a third bevel gear is fixedly connected to the other end of the vertical rod, a fourth bevel gear is in transmission connection with one side of the third bevel gear, and the fourth bevel gear is fixedly sleeved on the outside of the rotating rod.

[0015] As a further scheme of the present application: the diameter of the circular hole part of the rotating ring is matched with the diameters of the first top pipe and the second top pipe.

[0016] Compared with the prior art, the application has the beneficial effects that: the rotation of the rotating shaft drives the first bevel gear to rotate, so that the rotating ring rotates, the rotation of the rotating ring drives the rotating rod to rotate through the transmission cooperation of the second bevel gear, the third bevel gear and the fourth bevel gear, the rotation of the rotating rod drives the sliding plate to move, the movement of the sliding plate drives the fixed cylinder and the moving cylinder to move, the moving cylinder moves in cooperation with the limiting rod to drive the pressing plate to abut and fix the first top pipe, the sliding plate is continuously moved, the fixed cylinder and the moving cylinder drive the first top pipe to move towards the second top pipe, so as to ensure the sealing performance of the connection part of the two, at the same time, the rotation of the rotating ring drives the fixed plate to limit and fix the connection part of the first top pipe and the second top pipe. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the connection of the first top pipe and the second top pipe of the application.

[0018] Figure 2 It is a schematic view of the overall structure of the sleeve in the application.

[0019] Figure 3 It is a schematic view of the internal structure of the sleeve in the application

[0020] Figure 4 It is a schematic view of the structure of the rotating groove in the application.

[0021] Figure 5 It is a schematic view of the structure of the rotating ring in the application.

[0022] Figure 6 It is a schematic view of the structure of the fixed assembly in the application.

[0023] Figure 7 It is a schematic view of the position relationship of the limiting rod in the application.

[0024] Figure 8 It is a schematic view of the position relationship of the fixed cylinder and the moving cylinder in the application.

[0025] Figure 9 It is a schematic view of the internal structure of the fixed cylinder in the application.

[0026] Figure 10 It is a schematic view of the structure of the pressing plate in the application.

[0027] Figure 11 It is a schematic view of the position relationship of the third bevel gear and the fourth bevel gear in the application.

[0028] In the figure: 1, the first top pipe; 2, the second top pipe; 21, the clamping groove; 3, the clamping block; 4, the sleeve; 41, the rotating groove; 42, the moving groove; 43, the sliding groove; 44, the recess; 45, the notch; 5, the rotating ring; 51, the sliding groove; 6, the fixing assembly; 61, the moving block; 62, the limiting block; 63, the fixed plate; 7, the first bevel gear; 8, the rotating shaft; 9, the fixed cylinder; 10, the fixed ring; 11, the pressing plate; 12, the moving cylinder; 121, the curved groove; 13, the limiting rod; 14, the sliding plate; 15, the rotating rod; 16, the vertical rod; 17, the second bevel gear; 18, the third bevel gear; 19, the fourth bevel gear. DETAILED DESCRIPTION

[0029] Please refer to Figures 1-11 In the embodiment of the application, a micro top pipe interface fixing device comprises a first top pipe 1 and a second top pipe 2, the second top pipe 2 is provided with a clamping groove 21, the first top pipe 1 is provided on one side with a clamping block 3 matched with the clamping groove 21, the second top pipe 2 is fixedly provided outside with a sleeve 4, the sleeve 4 is provided inside with a rotating groove 41, the rotating groove 41 is rotatably connected with a rotating ring 5, the rotating ring 5 is provided on one side with a sliding groove 51, and the rotating ring 5 is drivingly connected with a plurality of fixing assemblies 6 through the sliding groove 51. The connection between the existing micro top pipes is mostly of the socket type, and this kind of connection is relatively simple and fast, but the connection between the top pipes cannot guarantee stability, and after a long time or collapse, the clamping between the top pipes will be released, and since the micro top pipe is generally long in length, once leakage occurs at a certain place, it will bring great inconvenience to the maintenance work, so it is necessary to guarantee the stability of the connection of the micro top pipe, the clamping block 3 of the first top pipe 1 is embedded into the clamping groove 21 of the second top pipe 2, in the process of embedding the clamping block 3 into the clamping groove 21, the first top pipe 1 will be clamped with the second top pipe 2 through the sleeve 4, the rotating ring 5 is rotated in the rotating groove 41, the rotation of the rotating ring 5 drives the sliding groove 51 to rotate and thus drives the fixing assembly 6 to work, the fixing assembly 6 will fix the clamped part of the clamping groove 21 and the clamping block 3, and guarantee the stability of the connection of the first top pipe 1 and the second top pipe 2.

[0030] Please refer to Figure 4 and Figure 6As shown, in the embodiment, preferably, the fixing assembly 6 comprises a moving block 61, a plurality of moving grooves 42 are formed on the outer side of the sleeve 4, the moving block 61 is in sliding connection with the moving grooves 42, a limiting block 62 is fixedly arranged on one side of the moving block 61, the limiting block 62 is in transmission connection with the sliding groove 51, and a fixing plate 63 is fixedly connected to the bottom of the moving block 61; after the first top pipe 1 and the second top pipe 2 are clamped, the rotating ring 5 is rotated, the rotating ring 5 drives the sliding groove 51 to rotate, and the rotation of the sliding groove 51 drives the moving block 61 to move along the moving groove 42 to the clamping position of the first top pipe 1 and the second top pipe 2. The movement of the moving block 61 drives the movement of the fixing plate 63, the fixing plate 63 is in the shape of an arc, and several fixing plates 63 can completely wrap the connection position of the first top pipe 1 and the second top pipe 2, thereby playing a limiting and fixing role and preventing leakage at the connection position of the first top pipe 1 and the second top pipe 2. The fixing plate 63 can be fixed to the connection position by rotating the rotating ring 5, and the operation is relatively convenient.

[0031] Referring to Figure 3 As shown, in the embodiment, preferably, the rotating ring 5 is designed in the shape of a bevel gear on the side away from the sliding groove 51 and is in transmission connection with a first bevel gear 7 on one side, a rotating shaft 8 is fixedly connected to the center of the first bevel gear 7, and the rotating shaft 8 movably penetrates the side wall of the sleeve 4; the rotating shaft 8 is rotated, the rotation of the rotating shaft 8 drives the rotation of the first bevel gear 7, the side of the rotating ring 5 close to the first bevel gear 7 is designed in the shape of a bevel gear, and thus the rotation of the first bevel gear 7 drives the rotation of the rotating ring 5 in the rotating groove 41, the rotation of the rotating ring 5 can enable the fixing assembly 6 to limit and fix the connection position of the first top pipe 1 and the second top pipe 2, and the fixing assembly 6 can work only by rotating the rotating shaft 8, which is convenient for use in construction and improves work efficiency.

[0032] Referring to Figure 7 , Figures 9-10 As shown, in the embodiment, preferably, the moving block 61 is provided with a fixing cylinder 9 on the side away from the first bevel gear 7, the fixing cylinder 9 is movably clamped with the sleeve 4, a fixing ring 10 is fixedly arranged in the fixing cylinder 9, a plurality of pressing plates 11 are annularly and fixedly arranged on one side of the fixing ring 10, and the pressing plates 11 are made of elastic material; after the first top pipe 1 is preliminarily clamped with the second top pipe 2 by penetrating the fixing cylinder 9 and the fixing ring 10, the pressing plates 11 are wrapped on the outer side of the first top pipe 1, the pressing plates 11 are abutted with the outer side of the first top pipe 1 by pressing the pressing plates 11 towards the first top pipe 1, the pressing plates 11 are continuously pressed to limit and fix the first top pipe 1, the pressing plates 11 can prevent the clamping block 3 of the first top pipe 1 from being disengaged from the clamping groove 21 of the second top pipe 2, and further increase the connection stability between the first top pipe 1 and the second top pipe 2. The elastic material of the pressing plates 11 can be spring steel, rubber or the like.

[0033] Referring to Figure 8 and Figure 9 As shown in the figure, in the embodiment, preferably, the outer side of the fixed cylinder 9 is threadedly fitted with a moving cylinder 12, one end of the moving cylinder 12 is designed in a circular truncated cone shape; rotating the moving cylinder 12, since the moving cylinder 12 is threadedly fitted with the fixed cylinder 9, the rotation of the moving cylinder 12 will make the moving cylinder 12 move along the fixed cylinder 9 towards the direction of the pressing plate 11, one end of the moving cylinder 12 is designed in a circular truncated cone shape, thus the movement of the moving cylinder 12 makes the pressing plate 11 gather towards the center to clamp the first top pipe 1, achieving the effect of limiting and fixing, which can ensure the stability of the connection between the first top pipe 1 and the second top pipe 2.

[0034] Referring to Figure 8 As shown in the figure, in the embodiment, preferably, the outer side of the moving cylinder 12 is provided with a curved groove 121, a limiting rod 13 is fixedly arranged in the sleeve 4, the limiting rod 13 is slidably connected with the curved groove 121, and the curved groove 121 is arranged around the outer side of the moving cylinder 12; the moving fixed cylinder 9 can drive the moving cylinder 12 to move, the movement of the moving cylinder 12 will make the curved groove 121 cooperate with the limiting rod 13 to make the moving cylinder 12 rotate, the rotation of the moving cylinder 12 will make the moving cylinder 12 itself slide along the fixed cylinder 9 to drive the pressing plate 11 to gather towards the center to limit and fix the first top pipe 1.

[0035] Referring to Figure 7 As shown in the figure, in the embodiment, preferably, the sleeve 4 is provided with a sliding groove 43 on the side relative to the limiting rod 13, a sliding plate 14 is slidably connected in the sliding groove 43, and one end of the sliding plate 14 away from the sliding groove 43 is fixedly connected with the fixed cylinder 9; moving the sliding plate 14 along the sliding groove 43, the movement of the sliding plate 14 drives the fixed cylinder 9 to move and the moving cylinder 12 to move, the moving cylinder 12 will cooperate with the limiting rod 13 to rotate in the process of moving, the moving cylinder 12 will move along the fixed cylinder 9 towards the direction of the pressing plate 11 in the process of rotating to press and gather the pressing plate 11 towards the center, thereby realizing the clamping and limiting of the first top pipe 1, the operation sequence is: in the process of moving the moving cylinder 12 driven by the fixed cylinder 9, the moving cylinder 12 will cooperate with the limiting rod 13 to drive the pressing plate 11 to clamp and fix the first top pipe 1, at this time, the fixed cylinder 9 is continuously moved, because the moving cylinder 12 has clamped and fixed the first top pipe 1 at this time, the continuous movement of the fixed cylinder 9 drives the moving cylinder 12 and the first top pipe 1 to move together, thereby the clamping of the clamping block 3 of the first top pipe 1 and the clamping groove 21 of the second top pipe 2 can be more closely connected, preventing the phenomenon of leakage at the connection, then the fixed plate 63 limits and fixes the connection, through the three preventive measures, the stability and sealing performance of the connection between the first top pipe 1 and the second top pipe 2 can be ensured.

[0036] Referring to Figure 7As shown in the drawings, in the embodiment, preferably, the sliding plate 14 is threadedly connected with a rotating rod 15 at one end away from the fixed cylinder 9, and the rotating rod 15 is transversely movably arranged through the sleeve 4; rotating the rotating rod 15, since the sliding plate 14 is threadedly connected with the rotating rod 15, the rotating rod 15 drives the sliding plate 14 to move along the sliding groove 43, and the movement of the sliding plate 14 drives the fixed cylinder 9 to move, thereby realizing that the moving cylinder 12 drives the pressing plate 11 to abut against and fix the first top pipe 1.

[0037] As shown in the drawings, Figure 11 As shown in the drawings, in the embodiment, preferably, the sleeve 4 is provided with a groove 44 at one side of the rotating ring 5, a vertical rod 16 is movably arranged in the groove 44, one end of the vertical rod 16 is fixedly connected with a second bevel gear 17, the second bevel gear 17 is drivingly connected with one side of the rotating ring 5, the sleeve 4 is transversely provided with a notch 45, the rotating rod 15 is rotatably connected with the notch 45, the notch 45 is in communication with the groove 44, the other end of the vertical rod 16 is fixedly connected with a third bevel gear 18, one side of the third bevel gear 18 is drivingly connected with a fourth bevel gear 19, and the fourth bevel gear 19 is fixedly sleeved on the outer side of the rotating rod 15; rotating the rotating shaft 8, the rotating shaft 8 drives the first bevel gear 7 to rotate, the first bevel gear 7 drives the rotating ring 5 to rotate, the rotating ring 5 drives the second bevel gear 17 to rotate, the second bevel gear 17 drives the vertical rod 16 to rotate in the groove 44, the vertical rod 16 drives the third bevel gear 18 to rotate, the third bevel gear 18 drives the fourth bevel gear 19 to rotate, thereby driving the rotating rod 15 to rotate in the notch 45, the rotating rod 15 drives the sliding plate 14 to move in the sliding groove 43, and the movement of the sliding plate 14 drives the fixed cylinder 9 to move, thereby realizing that the moving cylinder 12 drives the pressing plate 11 to abut against and fix the first top pipe 1; by rotating the rotating shaft 8, the fixed plate 63 can realize the three effects of limiting and fixing the connection between the first top pipe 1 and the second top pipe 2, clamping and fixing the first top pipe 1 by the pressing plate 11, and ensuring the sealing of the connection between the first top pipe 1 and the second top pipe 2 by the sliding plate 14 driving the first top pipe 1 to move towards the second top pipe 2, and the actual operation is more convenient and fast.

[0038] As shown in the drawings, Figure 4 And Figure 5 As shown in the drawings, in the embodiment, preferably, the rotating ring 5 is provided with a circular hole portion, and the diameter of the circular hole portion matches the diameters of the first top pipe 1 and the second top pipe 2; the first top pipe 1 is clamped with the second top pipe 2 through the circular hole provided at the center of the rotating ring 5, and the same diameters can ensure that the rotating ring 5 is more closely attached to the first top pipe 1, thereby enhancing the strength of the connection.

[0039] The working principle of the present application is that the first top pipe 1 is partially embedded in the clamping groove 21 of the second top pipe 2, and in the process of embedding the clamping block 3 into the clamping groove 21, the first top pipe 1 is clamped with the second top pipe 2 through the sleeve 4, the rotating shaft 8 is rotated, the rotation of the rotating shaft 8 drives the first bevel gear 7 to rotate, since the side of the rotating ring 5 close to the first bevel gear 7 is designed as a bevel gear, the rotation of the first bevel gear 7 drives the rotating ring 5 to rotate in the rotating groove 41, the rotation of the rotating ring 5 drives the second bevel gear 17 to rotate, the rotation of the second bevel gear 17 drives the vertical rod 16 to rotate in the groove 44, the rotation of the vertical rod 16 drives the third bevel gear 18 to rotate, the rotation of the third bevel gear 18 drives the fourth bevel gear 19 to rotate and thus drives the rotating rod 15 to rotate in the notch 45, the rotation of the rotating rod 15 drives the sliding plate 14 to move in the sliding groove 43, the movement of the sliding plate 14 drives the fixed cylinder 9 to move and the moving cylinder 12 to move, the movement of the moving cylinder 12 cooperates with the limiting rod 13 to make the moving cylinder 12 rotate, the rotation of the moving cylinder 12 makes the moving cylinder 12 slide along the fixed cylinder 9 to drive the pressing plate 11 to gather towards the center and thus fix the first top pipe 1, at this time, the fixed cylinder 9 is continuously moved, because the moving cylinder 12 has clamped and fixed the first top pipe 1 at this time, the continuous movement of the fixed cylinder 9 drives the moving cylinder 12 and the first top pipe 1 to move together, so that the clamping block 3 of the first top pipe 1 and the clamping groove 21 of the second top pipe 2 can be clamped more closely, preventing the phenomenon of leakage at the connection, at the same time, the rotation of the rotating ring 5 drives the sliding groove 51 to rotate, the rotation of the sliding groove 51 drives the moving block 61 to move along the moving groove 42 to the clamping position of the first top pipe 1 and the second top pipe 2 through the action of the limiting block 62, the movement of the moving block 61 drives the fixed plate 63 to move, the fixed plate 63 is arc-shaped, several fixed plates 63 can completely cover the connection of the first top pipe 1 and the second top pipe 2, which not only plays a limiting and fixing role, but also can prevent the first top pipe 1 and the second top pipe 2 from leaking at the connection, the operation sequence is that the moving cylinder 12 cooperates with the limiting rod 13 to drive the pressing plate 11 to clamp and fix the first top pipe 1 during the movement of the fixed cylinder 9, at this time, the fixed cylinder 9 is continuously moved, because the moving cylinder 12 has clamped and fixed the first top pipe 1 at this time, the continuous movement of the fixed cylinder 9 drives the moving cylinder 12 and the first top pipe 1 to move together, so that the clamping block 3 of the first top pipe 1 and the clamping groove 21 of the second top pipe 2 can be clamped more closely, preventing the phenomenon of leakage at the connection, then the fixed plate 63 is used to limit and fix the connection, through three preventive measures, the stability and sealing performance of the connection of the first top pipe 1 and the second top pipe 2 can be guaranteed.

Claims

1. A miniature jacking pipe interface fixing device, comprising a first jacking pipe and a second jacking pipe, characterized in that, The second jacking pipe has a slot, and the first jacking pipe has a locking block on one side that matches the slot. A sleeve is fixedly fitted on the outside of the second jacking pipe. A rotating groove is opened inside the sleeve. A rotating ring is rotatably connected inside the rotating groove. A sliding groove is opened on one side of the rotating ring. The rotating ring is connected to multiple fixed components through the sliding groove. The fixing component includes a movable block, and a plurality of movable grooves are provided on the outer side of the sleeve. The movable block is slidably connected to the movable grooves. A limit block is fixedly provided on one side of the movable block. The limit block is drivenly connected to the sliding groove. A fixing plate is fixedly connected to the bottom of the movable block. After the first and second jacking pipes are engaged, the rotating ring is rotated. The rotation of the rotating ring drives the sliding groove to rotate. The rotation of the sliding groove, through the action of the limiting block, drives the moving block to move along the moving groove towards the engagement point of the first and second jacking pipes. The movement of the moving block drives the fixed plate to move. The fixed plate is arc-shaped and can completely cover the connection point of the first and second jacking pipes. It not only serves as a limiting and fixing function, but also prevents leakage at the connection point of the first and second jacking pipes. By rotating the rotating ring, the fixed plate can fix the connection point. The rotating ring is designed as a bevel gear on the side away from the slide groove, and a first bevel gear is connected to the side of the rotating ring for transmission. A rotating shaft is fixedly connected to the center of the first bevel gear, and the rotating shaft movably passes through the side wall of the sleeve.

2. The miniature jacking pipe interface fixing device according to claim 1, characterized in that, A fixed cylinder is provided on the side of the movable block away from the first bevel gear. The fixed cylinder is movably engaged with the sleeve. A fixed ring is fixedly provided inside the fixed cylinder. Multiple pressure plates are fixedly provided in a ring on one side of the fixed ring. The pressure plates are made of elastic material.

3. The miniature jacking pipe interface fixing device according to claim 2, characterized in that, The fixed cylinder is threadedly fitted with a movable cylinder, one end of which is a frustum-shaped design.

4. The miniature jacking pipe interface fixing device according to claim 3, characterized in that, A curved groove is provided on the outer side of the movable cylinder, and a limiting rod is fixedly provided inside the sleeve. The limiting rod is slidably connected to the curved groove, and the curved groove is opened around the outer side of the movable cylinder.

5. A miniature jacking pipe interface fixing device according to claim 4, characterized in that, The sleeve has a sliding groove on the side opposite to the limiting rod, and a sliding plate is slidably connected in the sliding groove. The end of the sliding plate away from the sliding groove is fixedly connected to the fixed cylinder.

6. A miniature jacking pipe interface fixing device according to claim 5, characterized in that, The sliding plate is threadedly connected to a rotating rod at the end away from the fixed cylinder, and the rotating rod moves laterally through the sleeve.

7. A miniature jacking pipe interface fixing device according to claim 6, characterized in that, The sleeve has a groove on one side of the rotating ring, and a vertical rod is movably arranged in the groove. A second bevel gear is fixedly connected to one end of the vertical rod. The second bevel gear is drivenly connected to one side of the rotating ring. The sleeve has a slot that extends horizontally through it. The rotating rod is rotatably connected to the slot. The slot is connected to the groove. A third bevel gear is fixedly connected to the other end of the vertical rod. A fourth bevel gear is drivenly connected to one side of the third bevel gear. The fourth bevel gear is fixedly sleeved on the outside of the rotating rod.

8. A miniature jacking pipe interface fixing device according to claim 1, characterized in that, The diameter of the circular hole portion of the rotating ring matches the diameters of the first jacking pipe and the second jacking pipe.

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