Stainless steel corrugated pipe and using method

Abstract

The invention relates to the technical field of corrugated pipe installation, and discloses a stainless steel corrugated pipe and a using method.The stainless steel corrugated pipe comprises an inner pipe and a corrugated outer pipe on the outer side of the inner pipe, a first pipe fitting is arranged on the outer side of the inner pipe, a second pipe fitting is arranged at the other end of the inner pipe, and the first pipe fitting and the second pipe fitting are fixed in an inserted mode; a clamping frame is slidably mounted in the first pipe fitting, the clamping frame comprises a fixing shell, clamping plates, a fixing edge and a fixing strip, four inner cavities are annularly arrayed in the first pipe fitting, the fixing shell is slidably mounted in the inner cavities, the clamping plates are symmetrically mounted in the fixing shell, and the clamping plates are symmetrically mounted in the fixing shell. The two clamping plates are symmetrically arranged in a conical shape, and a fixing edge is arranged at one end of each clamping plate. Installation personnel only need to provide power output for the second driving shaft, the convenience during pipeline butt joint can be improved, the butt joint angle during mutual butt joint of the two pipelines can be adjusted, and the manual operation intensity is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bellows installation, in particular to a stainless steel bellows and a use method thereof. Background Art

[0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the folding and stretching direction. Bellows are widely used in instruments and meters. Their main purpose is to be used as a measuring element for pressure measuring instruments to convert pressure into displacement or force. The bellows has a thinner wall and higher sensitivity. The measuring range is from tens of Pa to tens of MPa. Its open end is fixed, and the sealed end is in a free state. Auxiliary coil springs or reeds are used to increase the elasticity. When working, it stretches along the length of the tube under the action of internal pressure, causing the movable end to produce a displacement that is related to the pressure. The movable end drives the pointer to directly indicate the pressure.

[0003] For the existing corrugated pipes, small pieces can be installed by manual docking. However, when installing large corrugated pipes, the pipe body is transported to the designated installation position by equipment, the ports of the two pipe bodies are placed correspondingly, and then the ends of the pipe bodies are sealed and connected manually. However, the two pipe bodies need to be docked before installation, and the operator cannot lift the corrugated pipe by himself, and needs to use tools or multiple people to lift it, which makes the installation operation extremely troublesome. In addition, if the two pipe bodies are tilted during installation, the pipe bodies will not fit together when docked, and there will be sealing problems at the ends of the pipe fittings, which greatly affects the subsequent use. Therefore, it does not meet the existing needs. In this regard, we propose a stainless steel corrugated pipe and a method for use. Summary of the invention

[0004] The present invention provides a stainless steel corrugated pipe and a method for using the same, which has the beneficial effect of convenient butt-jointing installation of the pipe body, and solves the problem mentioned in the above background technology that the two pipe bodies need to be butt-jointed before installation, and the operator cannot lift the corrugated pipe by himself, but needs to use tools or multiple people to lift it, which makes the installation operation extremely troublesome. In addition, if the two pipe bodies are tilted during installation, the pipe bodies will not fit together when butt-jointed, which will cause sealing problems at the ends of the pipe fittings, greatly affecting the subsequent use.

[0005] The present invention provides the following technical solution: a stainless steel corrugated pipe, comprising an inner pipe and a corrugated outer pipe outside the inner pipe, a first pipe fitting is provided on the outer side of the inner pipe, a second pipe fitting is provided on the other end of the inner pipe, and the first pipe fitting is plugged and fixed with the second pipe fitting; A snap-fit ​​frame is slidably mounted inside the first pipe, and the snap-fit ​​frame includes a fixed shell, a clamping plate, a fixed edge and a fixed strip. The first pipe has four inner cavities in an annular array inside. A fixed shell is slidably mounted inside the inner cavity. Clamping plates are symmetrically mounted inside the fixed shell, and two clamping plates are symmetrically placed in a cone shape. A fixed edge is provided at one end of the clamping plate, and fixed strips are arranged inside the fixed edge. The inner cavity is provided with a one-way fixing frame located at both ends of the fixing shell, the one-way fixing frame comprises an outer shell, an inner circular groove and an elastic strip, the inner shell is provided with an inner circular groove, and the inner circular groove has elastic strips in a circular array; The second pipe is also provided with a plurality of fixing grooves distributed in a circular array, a rope is fixedly installed in the fixing groove, a comparison end is installed at one end of the rope, and the comparison end passes through the fixing shell and the outer shell in sequence; The contrasting end and the rope are both used to adjust the traction between the first pipe and the second pipe. The two clamps are symmetrically distributed in a cone shape and are used to limit the moving direction of the rope.

[0006] As an optional solution of the stainless steel corrugated pipe of the present invention, wherein: a traction frame is also installed inside the inner cavity, and the traction frame includes a cylindrical slide, a threaded shaft, a traction slider and a slide groove, and two supporting slide bars are symmetrically installed inside the inner cavity, and a cylindrical slide is slidably installed inside the supporting slide bar, and a threaded shaft is rotatably installed inside the cylindrical slide, and the outer thread of the threaded shaft is engaged with the limited position cavity; Slide grooves are also provided on both sides of the interior of the traction slide block, and the cylindrical slide is used to pass through the interior of the slide grooves; A fixing shell is arranged at the lower end of the traction sliding block.

[0007] As an optional solution of the stainless steel bellows of the present invention, the traction frame further comprises an engagement block installed inside the limiting cavity, an engagement tooth arranged on the lower surface of the engagement block, a static wedge block arranged on the engagement block, a dynamic wedge block arranged on the upper surface of the engagement block, a first spring installed on one side of the traction slider, and a plurality of spring sheets installed on both sides of the engagement block; One end of the static wedge block and the dynamic wedge block are both provided with an inclined surface, and the lower surface of the engaging block is provided with engaging teeth, and the engaging teeth match the threaded shaft. Both sides of the two engaging blocks are installed with spring plates, and the spring plates are used to apply elastic force to the two engaging blocks. A first spring is also installed on one side of the traction slider, and the first spring is used to apply a tensile force to the traction slider. A stop plate is symmetrically provided at one end of the cylindrical slide, and a second spring is installed on one side wall of the stop plate.

[0008] As an optional solution of the stainless steel bellows of the present invention, wherein: the first striker and the second striker are symmetrically provided at both ends of the cylindrical slide, and the first striker and the second striker are used to apply a pushing force in a set direction to the moving wedge block; When the moving wedge block is located on the upper surface of the engagement block, a pushing force is applied to the moving wedge block through the first striker, and when the moving wedge block is located on the upper surface of the static wedge block, a pushing force is applied to the moving wedge block through the second striker.

[0009] As an optional solution of the stainless steel bellows of the present invention, wherein: a sub-cavity located inside the first pipe is also installed at one end of the inner cavity, a linkage frame is installed inside the sub-cavity, and the linkage frame includes four support shells, a support shaft movably connected in the support shell, a first connecting pipe installed on one side of two horizontal support shells, a connecting rod installed at one end of the first driving gear and connected to the rotating shaft seat, installed at one end of the support shaft, a third spring installed on the outside of the support shell, and a second connecting pipe installed on one side of two vertical support shells; The interior of the support housing and the first connecting pipe is filled with oil; The connecting shaft seat is used to provide connection conditions between the first driving gear and the connecting rod when rotating; A driving box is also installed inside the auxiliary cavity, and the driving box includes a rotating ring installed in the auxiliary cavity, a third gear and a second gear installed at the lower end of the rotating ring. A first driving gear is provided at one end of the threaded shaft, and the first driving gear is used for meshing connection with the second gear and the third gear.

[0010] As an optional solution of the stainless steel bellows of the present invention, the clamping frame further comprises a transverse groove, a sliding pin movably connected in the transverse groove, a mandrel installed at one end of the positioning rod and a positioning rod installed on the sliding pin, and both ends of the mandrel are respectively connected to the positioning rod and the sliding pin; The push rod is used to provide thrust to the sliding pin when the clamping plate is turned over, and a cone head is provided at one end of the sliding pin.

[0011] As an optional solution of the stainless steel corrugated tube of the present invention, a limiting tooth is provided inside one end of the elastic strip, and the limiting tooth is used to increase the friction force when the comparison end is located inside the outer shell.

[0012] As an optional solution of the stainless steel bellows of the present invention, wherein: the drive box further comprises a fixing ring mounted on the auxiliary cavity, a first drive shaft mounted on the fixing ring, a second drive shaft arranged at one end of the first drive shaft, and a first gear arranged outside the first drive shaft; The rotating ring is rotatably mounted in the fixed ring, and the first gear is meshed with the tooth groove of the rotating ring.

[0013] As an optional solution of the stainless steel corrugated pipe of the present invention, wherein: the lower surfaces of the second pipe fitting and the first pipe fitting are both installed with a ground adjustment frame, the ground adjustment frame includes a horizontal support frame, two vertical support frames movably connected to the horizontal support frame, a first rotating shaft installed on one side of the two vertical support frames, the first rotating shaft is used to support the vertical support frame to rotate, a second rotating shaft installed at the lower end of the horizontal support frame and a movable base installed at the lower end of the second rotating shaft, the second rotating shaft is used to support the horizontal support frame and rotate, and the vertical support frame is used to contact the second pipe fitting and the outer side of the first pipe fitting; The second rotating shaft is used to apply rotational torque to the lateral support frame; The first rotating shaft is used to provide a rotational torque to the vertical support frame.

[0014] The present invention also provides a method for using the stainless steel bellows, comprising the following steps: S1. Place two ground adjustment racks on the ground and place them close to each other. Then place the first pipe and the second pipe on two horizontal support racks respectively. Fix one end of the four ropes in the fixing grooves respectively. Then put the other ends of the four ropes into the fixing shell. At this time, use an electric wrench or other tools to provide rotational power for the second drive shaft. S2, the rotating ring is driven to rotate by the first gear. If the first pipe fitting and the second pipe fitting ports are tilted, one of the traction frames will be pulled to extend outward, and the first driving gear will be pulled to the extreme position and located below the third gear. When extending, the distance of the tilted side will be gradually shortened. At the same time, under the traction force and the support of the multi-angle adjustment of the lateral support frame, the angles of the first pipe fitting and the second pipe fitting ports will be automatically aligned during traction, completing the docking preparation of the two ports; S3. When the rotating ring rotates, the third gear drives the first driving gear to rotate, and the first driving gear drives the threaded shaft to mesh with the internal structure of the traction slider, driving the traction slider to move circularly, and drag the first pipe inward, and form a traction force between the first pipe and the second pipe, so that the inclined side of the first pipe and the second pipe are gradually parallel, and the rope is continuously dragged by the continuous sliding of the traction slider to complete the docking between the first pipe and the second pipe; S4. When the ports of the first pipe fitting and the second pipe fitting are in a parallel state and are subjected to the dragging force, the dragging force is used as the power for the movement of the mobile base, so that the two first pipe fittings and the second pipe fittings are close to each other, and the clamping and fixing operation of the first pipe fitting and the second pipe fitting is completed by continuous tightening. The present invention has the following beneficial effects: 1. The stainless steel corrugated pipe, the ends of the first pipe and the second pipe are divided into four directions, each direction has a corresponding driving component, when the first pipe and the second pipe are tilted, the spacing of the tilted parts is far apart, through the difference distance here, the position of the threaded shaft and the first driving gear can be adjusted, so that the first driving gear and the third gear are meshed, and power is provided for the first driving gear and the threaded shaft. For the spacing of the tilted parts, the rope traction power is provided by the traction slider, so that the first pipe and the second pipe are close to each other, ensuring that the first pipe and the second pipe are in a parallel state, and only the spacing in the direction far apart is adjusted. When the first pipe and the second pipe are adjusted to a parallel state, at this time, the inside of the first pipes in the four directions are in a power connection state, and the rope is pulled at the same time, so that the first pipe and the second pipe are close to each other and plugged and fixed; The installer only needs to provide power output for the second drive shaft to achieve the convenience of pipe docking, the mutual docking of two pipes, and the adjustment of the docking angle during docking, thus saving manual operation intensity.

[0015] 2. The stainless steel corrugated pipe provides tensioning power support for the first pipe fitting and the second pipe fitting through the traction frame, and uses the clamping frame to provide fixation and rope pushing functions. The clamping frame cooperates with the traction frame to realize the continuous pushing function of the rope without length limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the docking structure of the first pipe fitting and the second pipe fitting of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the traction frame of the present invention.

[0019] Figure 4 It is a schematic diagram of the side structure of the traction frame of the present invention.

[0020] Figure 5 For the present invention Figure 3 Schematic diagram of the local structure at C.

[0021] Figure 6 For the present invention Figure 4 Schematic diagram of the local structure at D.

[0022] Figure 7 It is a schematic diagram of the internal structure of the one-way fixing frame of the present invention.

[0023] Figure 8 For the present invention Figure 3 Schematic diagram of the local structure at B.

[0024] Fig. 9 For the present invention Figure 2 Schematic diagram of the local structure at A.

[0025] Fig.10 It is a schematic diagram of the linkage frame structure of the present invention.

[0026] Fig.11 It is a schematic diagram of the inclined docking of the first pipe fitting and the second pipe fitting of the present invention.

[0027] In the figure: 1, first pipe fitting; 2, second pipe fitting; 3. Traction frame; 30. First spring; 31. Cylinder slide; 32. Threaded shaft; 33. Traction slide block; 34. Limiting cavity; 35. Slide groove; 36. Engaging block; 37. Engaging teeth; 38. Static wedge block; 39. Moving wedge block; 40. Shrapnel; 4. snap-fit ​​frame; 41. fixed shell; 42. clamping plate; 43. transverse groove; 44. top rod; 45. sliding pin; 46. positioning rod; 48. fixed edge; 49. fixing strip; 5. One-way fixing frame; 51. Outer shell; 52. Inner circular groove; 53. Elastic strip; 54. Limiting tooth; 61. Supporting slide bar; 62. Abutment plate; 63. Second spring; 7. Drive box; 71. Fixed ring; 72. Rotating ring; 73. First drive shaft; 74. Second drive shaft; 75. First gear; 76. Second gear; 77. Third gear; 8. linkage frame; 81. support housing; 82. support shaft; 83. first connecting pipe; 85. connecting shaft seat; 86. connecting rod; 87. third spring; 88. second connecting pipe; 9. Ground adjustment frame; 91. Horizontal support frame; 92. Vertical support frame; 93. First rotating shaft; 94. Second rotating shaft; 95. Mobile base; 11. Inner tube; 12. Corrugated outer tube; 13. First striker; 14. Second striker; 15. Fixing groove; 16. Rope; 17. Comparison end; 18. First driving gear. DETAILED DESCRIPTION

[0028] 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.

[0029] Example 1 See also Figure 1-Figure 11, and discloses a stainless steel corrugated pipe, comprising an inner pipe 11 and a corrugated outer pipe 12 outside the inner pipe 11, a first pipe fitting 1 is provided on the outer side of the inner pipe 11, a second pipe fitting 2 is provided on the other end of the inner pipe 11, and the first pipe fitting 1 and the second pipe fitting 2 are plugged and fixed; A clamping frame 4 is slidably installed inside the first pipe 1, and the clamping frame 4 includes a fixed shell 41, a clamping plate 42, a fixed edge 48 and a fixed strip 49. The first pipe 1 has four inner cavities in an annular array inside. A fixed shell 41 is slidably installed inside the inner cavity. Clamping plates 42 are symmetrically installed inside the fixed shell 41, and the two clamping plates 42 are symmetrically placed in a cone shape. A fixed edge 48 is provided at one end of the clamping plate 42, and a fixed strip 49 is arranged inside the fixed edge 48. The inner cavity is provided with a one-way fixing frame 5 located at both ends of the fixing shell 41. The one-way fixing frame 5 comprises an outer shell 51, an inner circular groove 52 and an elastic strip 53. The inner shell 51 is provided with an inner circular groove 52, and the inner circular groove 52 is provided with an elastic strip 53 in a circular array. The second pipe 2 is also provided with a plurality of fixing grooves 15 distributed in a circular array. A rope 16 is fixedly installed inside the fixing groove 15. A comparison end 17 is installed at one end of the rope 16. The comparison end 17 passes through the fixing shell 41 and the outer shell 51 in sequence. The end 17 and the rope 16 are both used to adjust the traction between the first pipe 1 and the second pipe 2, and the two clamps 42 are symmetrically distributed in a cone shape to limit the moving direction of the rope 16; A traction frame 3 is also installed inside the inner cavity, and the traction frame 3 includes a cylindrical slide 31, a threaded shaft 32, a traction slider 33 and a slide groove 35. Two support slide bars 61 are symmetrically installed inside the inner cavity. The cylindrical slide 31 is slidably installed inside the support slide bar 61. The threaded shaft 32 is rotatably installed inside the cylindrical slide 31. The outer thread of the threaded shaft 32 is engaged with the limited position cavity 34. Slide grooves 35 are also provided on both sides of the interior of the traction slide block 33, and the cylindrical slide 31 is used to pass through the interior of the slide grooves 35; A fixing shell 41 is provided at the lower end of the traction slider 33; The traction frame 3 further includes an engagement block 36 installed in the limiting cavity 34, an engagement tooth 37 arranged on the lower surface of the engagement block 36, a static wedge block 38 arranged on the engagement block 36, a dynamic wedge block 39 installed on the upper surface of the engagement block 36, a first spring 30 installed on one side of the traction slider 33, and a plurality of springs 40 installed on both sides of the engagement block 36; One end of the static wedge block 38 and the moving wedge block 39 are both provided with an inclined surface, the lower surface of the meshing block 36 is provided with meshing teeth 37, the meshing teeth 37 match the threaded shaft 32, both sides of the two meshing blocks 36 are installed with spring plates 40, the spring plates 40 are used to apply elastic force to the two meshing blocks 36, one side of the traction slider 33 is also installed with a first spring 30, the first spring 30 is used to apply a tensile force to the traction slider 33, one end of the cylindrical slide 31 is symmetrically provided with a butt plate 62, and a second spring 63 is installed on one side wall of the butt plate 62; The first striker 13 and the second striker 14 are symmetrically provided at both ends of the cylindrical slide 31, and the first striker 13 and the second striker 14 are used to apply a pushing force in a set direction to the moving wedge 39; When the moving wedge 39 is located on the upper surface of the engagement block 36, a pushing force is applied to the moving wedge 39 through the first striker 13, and when the moving wedge 39 is located on the upper surface of the static wedge 38, a pushing force is applied to the moving wedge 39 through the second striker 14; One end of the inner cavity is also provided with a sub-cavity located inside the first pipe 1, and a linkage frame 8 is installed inside the sub-cavity. The linkage frame 8 includes four support shells 81, a support shaft 82 movably connected in the support shell 81, a first connecting pipe 83 installed on one side of two horizontal support shells 81, a connecting shaft seat 85 installed at one end of the first driving gear 18, a connecting rod 86 installed at one end of the support shaft 82, a third spring 87 installed outside the support shell 81, and a second connecting pipe 88 installed on one side of two vertical support shells 81; The interior of the support housing 81 and the first communication pipe 83 is filled with oil; The connecting shaft seat 85 is used to provide a connection condition between the first driving gear 18 and the connecting rod 86 when rotating; A driving box 7 is also installed inside the auxiliary cavity. The driving box 7 includes a rotating ring 72 installed in the auxiliary cavity, a third gear 77 installed at the lower end of the rotating ring 72, and a second gear 76. A first driving gear 18 is provided at one end of the threaded shaft 32, and the first driving gear 18 is used for gear meshing connection with the second gear 76 and the third gear 77; Before laying the corrugated pipe, the pipe needs to be placed on the ground. After placement, the two pipes need to be connected to each other. Before the two corrugated pipes are connected, the ends of the two corrugated pipes are placed symmetrically. As shown in the inner pipe 11 in the figure, if the angle between the first pipe 1 and the second pipe 2 is at an inclined angle, it will cause that it cannot be inserted into the specified position during installation. At this time, one end of the rope 16 needs to be spirally inserted into the interior of the fixing groove 15, and one end of the comparison end 17 needs to pass through the interior of one of the outer shells 51 and through the interior of the fixing shell 41; There are four ropes 16, which are divided into four directions of up, down, left and right when viewed from the front of the first pipe 1 and the second pipe 2, and are respectively installed corresponding to the four fixed shells 41. When the first pipe 1 and the second pipe 2 are in an inclined state, the distance between the second pipe 2 and the first pipe 1 in one direction is the longest, and the distance in the opposite direction is the shortest. The rope 16 in the longest distance direction will be clamped by the fixed shell 41, and drive the traction slider 33 to slide outward as a whole. After sliding to the extreme position of the traction slider 33, it can continue to slide forward through the stroke of the supporting slide bar 61, and is resisted by the second spring 63, so as to avoid a large sliding force and affect the device, and provide a compensation distance for the sliding of the traction frame 3 as a whole. And the threaded shaft 32 is supported by the integral sliding of the cylindrical slide 31 located outside the support slide rod 61, so that the current first driving gear 18 will move toward the outside direction and move to the bottom of the third gear 77 until it is meshed with the third gear 77, while the first driving gear 18 in the opposite direction moves in the opposite direction, so that it moves toward the second gear 76 and exceeds the position of the second gear 76, and the opposite direction has an opposite trajectory; The working principle of the linkage frame 8 is as follows: when the traction frame 3 is displaced as a whole, the support shaft 82 is driven to extend and retract through one end of the threaded shaft 32, and each of the two horizontal support shells 81 among the four support shells 81 is in a connected state, and when one of the support shafts 82 is extended, a negative pressure is provided to the inside of the other support shell 81 through the second connecting pipe 88 or the first connecting pipe 83, so that the support shaft 82 in the opposite direction is contracted inwardly, and the first driving gear 18 is driven to be displaced, which will form a front-to-back difference in the displacement distance of the first driving gear 18. At this time, the side of the support shaft 82 that is extended will drive the first driving gear 18 to move to the lower end of the third gear 77 and mesh with the tooth groove of the third gear 77 for transmission. Through the rotation of the first driving gear 18, the threaded shaft 32 and the meshing teeth 37 are in a threaded meshing connection state, and the cylindrical slide 31 is driven to reciprocate as a whole; Driving principle of driving box 7 and traction frame 3: At this time, a hand drill or other tool is used to provide rotational power input to the rotating ring 72; The inclined side of the first pipe 1 and the second pipe 2 will pull the traction frame 3 as a whole through the rope 16, and the first driving gear 18 is supported by the threaded shaft 32, and drives the first driving gear 18 to be under the third gear 77. When the rotating ring 72 rotates, the second gear 76 and the first gear 75 are driven to rotate. Previously, the first driving gear 18 moved to the bottom of the third gear 77 through the threaded shaft 32 and meshed with the third gear 77. When the third gear 77 drives the first driving gear 18 to rotate, the rope 16 is pulled inward through the meshing with the meshing teeth 37, so that the inclined side gradually approaches one end of the second pipe 2. When the traction slider 33 moves, it moves through the meshing of the meshing teeth 37 with the outer surface of the threaded shaft 32. At this time, the moving wedge block 39 is located on the upper surface of the static wedge block 38 and contacts with the top of the inner wall of the limiting cavity 34, forming a The supporting state of the paired meshing blocks 36, when the traction slider 33 moves to the position of the first striker 13, the first striker 13 extends into the interior of the traction slider 33 and contacts one end of the moving wedge block 39, and pushes the moving wedge block 39 to move, so that the moving wedge block 39 is disengaged from the supporting effect on the meshing block 36, so that the meshing teeth 37 are disengaged from the threaded shaft 32. At this time, the traction slider 33 is supported by the first spring 30 and is bounced toward the second striker 14. At this time, the moving wedge block 39 is located on one side of the static wedge block 38. When the moving wedge block 39 collides with the second striker 14, the moving wedge block 39 is directly pushed to the upper surface of the static wedge block 38, so that the moving wedge block 39 forms a supporting state for the meshing block 36 again, and the meshing teeth 37 are re-engaged with the outer surface of the threaded shaft 32, continuously driving the comparison end 17 to be pulled inward, thereby realizing a continuous stretching action; Driving trajectory of linkage frame 8 and inner tube 11: As shown in the inner tube 11, when the inclined side of the first tube 1 and the second tube 2 gradually approach each other, the traction frame 3 slides to the right side of the inner tube 11 as a whole, and drives the first driving gear 18 at the top of the inner tube 11 to disengage from the meshing state of the third gear 77 and gradually move toward the second gear 76. Before that, the first driving gear 18 at the bottom of the inner tube 11 is located on the right side of the second gear 76. Through the oil pressure driving effect of the support shell 81 and the support shaft 82, the first driving gear 18 at the top of the inner tube 11 gradually moves to the right side, and the first driving gear 18 at the bottom of the inner tube 11 also moves toward the direction of the second gear 76 on the left side, and finally both of them will complete the meshing state with the second gear 76. The inclination angle between the first pipe 1 and the second pipe 2 is gradually in a parallel state, so that the two first drive gears 18 are in the same vertical line, so that the second gears 76 on both sides are meshed with the first drive gear 18, and at this time, the four first drive gears 18 are meshed with the second gear 76 at the same time. At this time, the four first drive gears 18 are in the same vertical line. When the first pipe 1 and the second pipe 2 are in an inclined state, the traction frame 3 in a single direction will be pulled to slide to the left side of the inner tube 11 in the figure. When the first pipe 1 and the second pipe 2 are in a parallel state, the four traction frames 3 are supported at the same time, and the support shell 81 and the support shaft 82 are used to limit the support, so that after the first pipe 1 and the second pipe 2 are in a parallel state, it is ensured that the first drive gear 18 and the second gear 76 are in a meshing state; The ends of the first pipe fitting 1 and the second pipe fitting 2 are divided into four directions, and there is a corresponding driving component in each direction. When the first pipe fitting 1 and the second pipe fitting 2 are tilted, the first pipe fitting 1 and the second pipe fitting 2 are far apart at this position. The distance difference between the first pipe fitting 1 and the second pipe fitting 2 in the four directions is used to change the connection and disconnection state of the driving component inside the first pipe fitting 1, and the driving component in the farther direction is driven to pull the first pipe fitting 1 and the second pipe fitting 2 to each other and approach each other, so that the first pipe fitting 1 and the second pipe fitting 2 are parallel to each other. At this time, the driving components in the four directions are all in a power connection state, and the rope 16 is pulled at the same time, so that the first pipe fitting 1 and the second pipe fitting 2 are close to each other and plugged and fixed, which can improve the convenience of pipeline docking. After the first pipe fitting 1 and the second pipe fitting 2 are connected by the rope 16, the operator only needs to provide power output to the external drive shaft 74 to achieve the docking of the two pipelines and the adjustment of the docking angle during docking.

[0030] Example 2 This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 11 The snap-fit ​​frame 4 further includes a transverse groove 43, a sliding pin 45 movably connected in the transverse groove 43, a push rod 44 installed at one end of a positioning rod 46, and a positioning rod 46 installed on the sliding pin 45, and both ends of the push rod 44 are respectively connected to the positioning rod 46 and the sliding pin 45; The push rod 44 is used to provide thrust to the slide pin 45 when the clamping plate 42 is turned over, and one end of the slide pin 45 is provided with a cone head; A limiting tooth 54 is provided inside one end of the elastic strip 53 , and the limiting tooth 54 is used to increase the friction force when the comparison end 17 is located inside the outer shell 51 .

[0031] The traction slider 33 pulls the fixed shell 41 to move through cyclic reciprocating motion, and the interior of the fixed shell 41 requires a one-way locking structure to adapt to the cyclic motion of the traction slider 33, and when the traction slider 33 returns, it is necessary to provide a one-way fixing condition for the rope 16; according to Figures 3 to 6As shown, when the traction slider 33 moves to the right side in the figure, it will drive the fixed shell 41 to move. At this time, through the symmetrical clamping action of the two clamping plates 42, when moving, a mutual squeezing force is provided to the clamping plates 42, and a squeezing and fixing condition is provided for the rope 16, and the greater the force, the stronger the fixing effect; And as the angle of the clamping plate 42 turns inward, the slide pin 45 can be pushed forward by the support of the push rod 44, so that the cone head in front of the slide pin 45 can form a needle-piercing state, thereby strengthening the strength of the rope 16 when it is fixed, and avoiding the clamping plate 42 from slightly retracting during the clamping process, which causes an impact during traction; When the rope 16 passes through the outer shell 51 and the traction slider 33 is out of engagement with the threaded shaft 32, the elastic strip 53 will shrink inwards due to its elasticity and fit with the outer surface of the rope 16 to form a fixed state. At the same time, the limiting teeth 54 can also clamp and fix the rope 16 to prevent the rope 16 from retracting, thereby achieving the function of maintaining the current position of the rope 16. The outer shell 51 is used to fix the rope 16 when the traction slider 33 is retracted, so that the rope 16 remains in the current position unchanged, which is convenient for supporting the traction slider 33 when it moves.

[0032] Example 3 This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-Figure 11 The drive box 7 further includes a fixing ring 71 mounted on the auxiliary cavity, a first drive shaft 73 mounted on the fixing ring 71, a second drive shaft 74 disposed at one end of the first drive shaft 73, and a first gear 75 disposed outside the first drive shaft 73; The rotating ring 72 is rotatably mounted in the fixed ring 71, and the first gear 75 is meshed with the teeth of the rotating ring 72; The second pipe 2 and the lower surface of the first pipe 1 are both installed with a ground adjustment frame 9, the ground adjustment frame 9 includes a horizontal support frame 91, two vertical support frames 92 movably connected to the horizontal support frame 91, a first rotating shaft 93 installed on one side of the two vertical support frames 92, the first rotating shaft 93 is used to support the vertical support frame 92 to rotate, a second rotating shaft 94 installed at the lower end of the horizontal support frame 91 and a movable base 95 installed at the lower end of the second rotating shaft 94, the second rotating shaft 94 is used to support the horizontal support frame 91, rotate, and the vertical support frame 92 is used to contact the outer sides of the second pipe 2 and the first pipe 1; The second rotating shaft 94 is used to provide a rotational torque to the lateral support frame 91; The first rotating shaft 93 is used to provide a rotational torque to the vertical supporting frame 92 .

[0033] When two pipes are connected, the above structure pulls them together and brings them closer together, and finally they are connected together. However, the whole process is above the ground. When the two pipes are close to each other, they will rub against the ground, causing an impact on the connection. By cooperating with the vertical support frame 92 and the transverse support frame 91 as well as the transverse support frame 91 and the movable base 95, the vertical support frame 92 can realize a transverse flipping angle and a radial flipping angle of the transverse support frame 91, so that the vertical support frame 92 has a multi-angle adjustment function when supporting the first pipe 1 or the second pipe 2, so that when the first pipe 1 and the second pipe 2 are close to each other, the angle adjustment function in the above structure is cooperated so that when the first pipe 1 and the second pipe 2 are towed, the ports can automatically tend to a parallel state, and rollers are also installed under the movable base 95 to provide moving conditions for the first pipe 1 and the second pipe 2 when they are close to each other. Through the ground adjustment frame 9, the device can realize the support and angle flipping of the first pipe 1 and the second pipe 2, as well as the mobile support when they are close to each other.

[0034] The present invention also provides a method for using the stainless steel bellows, comprising the following steps: S1. Place two ground adjustment frames 9 on the ground and place them close to each other. Then place the first pipe 1 and the second pipe 2 on two transverse support frames 91 respectively. Fix one end of four ropes 16 in the fixing grooves 15 respectively. Then, put the other ends of the four ropes 16 into the fixing shell 41. At this time, use an electric wrench or other tools to provide rotational power for the second drive shaft 74. S2. The rotating ring 72 is driven to rotate by the first gear 75. If the ports of the first pipe 1 and the second pipe 2 are tilted, one of the traction frames 3 will be pulled to extend outward, and the first driving gear 18 will be pulled to the extreme position and located below the third gear 77. When extending, the distance of the tilted side will be gradually shortened. At the same time, under the traction force and the support of the multi-angle adjustment of the lateral support frame 91, the angles of the ports of the first pipe 1 and the second pipe 2 will be automatically aligned during traction, completing the docking preparation of the two ports; S3. When the rotating ring 72 rotates, the third gear 77 drives the first driving gear 18 to rotate, and then the first driving gear 18 drives the threaded shaft 32 to mesh with the internal structure of the traction slider 33, driving the traction slider 33 to move circularly, and drag the first pipe 1 inward, and form a traction force between the first pipe 1 and the second pipe 2, so that the inclined sides of the first pipe 1 and the second pipe 2 are gradually in a parallel state, and the rope 16 is continuously dragged by the continuous sliding of the traction slider 33 to complete the docking between the first pipe 1 and the second pipe 2; S4. When the ports of the first pipe fitting 1 and the second pipe fitting 2 are in a parallel state and are subjected to the dragging force, the dragging force serves as the power for the movement of the movable base 95, so that the two first pipe fittings 1 and the second pipe fittings 2 are close to each other, and the clamping and fixing operation of the first pipe fitting 1 and the second pipe fitting 2 is completed through continuous tightening.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A stainless steel corrugated pipe, comprising an inner pipe (11) and a corrugated outer pipe (12) outside the inner pipe (11), characterized in that: A first pipe member (1) is provided on the outer side of the inner tube (11), and a second pipe member (2) is provided on the other end of the inner tube (11), and the first pipe member (1) and the second pipe member (2) are plugged and fixed; A snap-fit ​​frame (4) is slidably mounted inside the first pipe (1), the snap-fit ​​frame (4) comprising a fixed shell (41), a clamping plate (42), a fixed edge (48) and a fixed strip (49); the first pipe (1) has four inner cavities in an annular array inside, a fixed shell (41) is slidably mounted inside the inner cavities, clamping plates (42) are symmetrically mounted inside the fixed shell (41), and the two clamping plates (42) are symmetrically arranged in a cone shape; a fixed edge (48) is provided at one end of the clamping plate (42), and fixed strips (49) are arranged inside the fixed edge (48); A one-way fixing frame (5) located at both ends of the fixing shell (41) is installed inside the inner cavity, and the one-way fixing frame (5) comprises an outer shell (51), an inner circular groove (52) and an elastic strip (53). The inner shell (51) is provided with an inner circular groove (52), and the inner circular groove (52) has elastic strips (53) in a circular array. The second pipe (2) is further provided with a plurality of fixing grooves (15) distributed in a ring array, a rope (16) is fixedly installed inside the fixing groove (15), a comparison end (17) is installed at one end of the rope (16), and the comparison end (17) passes through the fixing shell (41) and the outer shell (51) in sequence; The comparison end (17) and the rope (16) are both used to adjust the traction force between the first pipe (1) and the second pipe (2), and the two clamping plates (42) are symmetrically distributed in a cone shape and are used to limit the moving direction of the rope (16).

2. The stainless steel bellows according to claim 1, characterized in that: A traction frame (3) is also installed inside the inner cavity, and the traction frame (3) includes a cylindrical slide (31), a threaded shaft (32), a traction slider (33) and a slide groove (35). Two supporting slide bars (61) are symmetrically installed inside the inner cavity. The cylindrical slide (31) is slidably installed on the inner side of the supporting slide bar (61), and the threaded shaft (32) is movably installed inside the cylindrical slide (31). The outer side of the threaded shaft (32) is threadedly engaged with the limited position cavity (34). The slide groove (35) is arranged inside the traction slider (33), and the cylindrical slide (31) is used to pass through the inside of the slide groove (35); A fixing shell (41) is provided at the lower end of the traction slider (33).

3. The stainless steel bellows according to claim 2, characterized in that: The traction frame (3) further comprises an engagement block (36) mounted inside the limiting cavity (34), an engagement tooth (37) arranged on the lower surface of the engagement block (36), a static wedge block (38) arranged on the engagement block (36), a dynamic wedge block (39) mounted on the upper surface of the engagement block (36), a first spring (30) mounted on one side of the traction slider (33), and a plurality of spring sheets (40) mounted on both sides of the engagement block (36); The static wedge block (38) and the dynamic wedge block (39) are both provided with inclined surfaces, the meshing teeth (37) match the threaded shaft (32), the spring sheet (40) is used to apply elastic force to the two meshing blocks (36), the first spring (30) is used to apply a tensile force to the traction slider (33), and a stop plate (62) is symmetrically provided at one end of the cylindrical slide (31), and a second spring (63) is installed on a side wall of the stop plate (62).

4. The stainless steel bellows according to claim 3, characterized in that: A first striker (13) and a second striker (14) are symmetrically provided at both ends of the cylindrical slide (31), and the first striker (13) and the second striker (14) are both used to apply a pushing force in a set direction to the moving wedge block (39); When the moving wedge block (39) is located on the upper surface of the engagement block (36), a pushing force is applied to the moving wedge block (39) through the first striker (13); and when the moving wedge block (39) is located on the upper surface of the static wedge block (38), a pushing force is applied to the moving wedge block (39) through the second striker (14).

5. The stainless steel bellows according to claim 4, characterized in that: A sub-cavity located inside the first pipe (1) is also installed at one end of the inner cavity, and a linkage frame (8) is installed inside the sub-cavity, and the linkage frame (8) comprises four support shells (81), a support shaft (82) movably connected to the support shell (81), a first connecting pipe (83) installed on one side of two horizontal support shells (81), a connecting rod (86) installed at one end of the first driving gear (18) and connected to the rotating shaft seat (85), installed at one end of the support shaft (82), a third spring (87) installed on the outside of the support shell (81), and a second connecting pipe (88) installed on one side of two vertical support shells (81); The interior of the support housing (81) and the first connecting pipe (83) are filled with oil; The connecting shaft seat (85) is used to provide a connection condition between the first driving gear (18) and the connecting rod (86) when rotating; A drive box (7) is also installed inside the auxiliary cavity, and the drive box (7) comprises a rotating ring (72) installed in the auxiliary cavity, a third gear (77) installed at the lower end of the rotating ring (72), and a second gear (76); A first driving gear (18) is provided at one end of the threaded shaft (32), and the first driving gear (18) is used to mesh with the second gear (76) or the third gear (77).

6. The stainless steel bellows according to claim 5, characterized in that: The snap-fit ​​frame (4) further comprises a transverse groove (43), a sliding pin (45) movably connected in the transverse groove (43), a push rod (44) mounted on one end of the positioning rod (46), and a positioning rod (46) mounted on the sliding pin (45), wherein both ends of the push rod (44) are respectively connected to the positioning rod (46) and the sliding pin (45); The push rod (44) is used to provide a thrust to the sliding pin (45) when the clamping plate (42) is turned over, and a cone head is provided at one end of the sliding pin (45).

7. The stainless steel bellows according to claim 6, characterized in that: A limiting tooth (54) is provided inside one end of the elastic strip (53), and the limiting tooth (54) is used to increase the friction force when the comparison end (17) is located inside the outer shell (51).

8. The stainless steel bellows according to claim 5, characterized in that: The drive box (7) further comprises a fixing ring (71) mounted on the auxiliary cavity, a first drive shaft (73) mounted on the fixing ring (71), a second drive shaft (74) arranged at one end of the first drive shaft (73), and a first gear (75) arranged outside the first drive shaft (73); The rotating ring (72) is movably connected inside the fixed ring (71), and the first gear (75) is meshed with the tooth groove of the rotating ring (72).

9. The stainless steel bellows according to claim 8, characterized in that: A ground adjustment frame (9) is installed on the lower surface of each of the second pipe member (2) and the first pipe member (1), the ground adjustment frame (9) comprising a transverse support frame (91), two vertical support frames (92) movably connected to the transverse support frame (91), a first rotating shaft (93) installed on one side of the two vertical support frames (92), the first rotating shaft (93) being used to support the vertical support frames (92) to rotate, a second rotating shaft (94) installed at the lower end of the transverse support frame (91), and a movable base (95) installed at the lower end of the second rotating shaft (94), the second rotating shaft (94) being used to drive the transverse support frame (91) to rotate, and the vertical support frame (92) being used to contact the outer sides of the second pipe member (2) and the first pipe member (1); The second rotating shaft (94) is used to apply a rotational torque to the transverse support frame (91); The first rotating shaft (93) is used to apply a rotational torque to the vertical support frame (92).

10. The method for using the stainless steel corrugated pipe according to claim 9, comprising the following steps: S1. Place two ground adjustment frames (9) on the ground and place them close to each other, then place the first pipe member (1) and the second pipe member (2) on two transverse support frames (91) respectively, fix one end of four ropes (16) in the fixing grooves (15) respectively, and then send the other ends of the four ropes (16) into the fixing shell (41), and then use an electric wrench or other tools to provide rotational power for the second drive shaft (74); S2, the rotating ring (72) is driven to rotate by the first gear (75). If the ports of the first pipe (1) and the second pipe (2) are tilted, one of the traction frames (3) will be pulled to extend outward, and the first driving gear (18) will be pulled to the extreme position and located below the third gear (77). When extending, the distance of the tilted side will be gradually shortened. At the same time, due to the traction force and the support of the multi-angle adjustment of the lateral support frame (91), the angles of the ports of the first pipe (1) and the second pipe (2) will be automatically aligned during traction, completing the preparation for docking the two ports; S3. When the rotating ring (72) rotates, the third gear (77) drives the first driving gear (18) to rotate, and the first driving gear (18) drives the threaded shaft (32) to mesh with the internal structure of the traction slider (33), driving the traction slider (33) to move circularly, and drag the first pipe (1) inward, thereby forming a traction force between the first pipe (1) and the second pipe (2), so that the inclined side of the first pipe (1) and the second pipe (2) gradually become parallel, and the rope (16) is continuously dragged by the continuous sliding of the traction slider (33), thereby completing the docking between the first pipe (1) and the second pipe (2); S4. When the ends of the first pipe member (1) and the second pipe member (2) are in a parallel state and are subjected to a dragging force, the dragging force serves as a driving force for the movement of the movable base (95), so that the two first pipe members (1) and the second pipe member (2) are brought closer to each other, and the clamping and fixing operation of the first pipe member (1) and the second pipe member (2) is completed by continuous tightening.

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