A relative fixing device for resisting pipeline stress

Abstract

This invention discloses a relative fixing device for resisting pipeline stress, comprising a base unit including a base, a first limiting seat assembly, a second limiting seat assembly, and a guide rod assembly. A fixing unit includes a fixing component and a sliding component. A limiting unit includes a base plate, a mounting seat, and a limiting component. A moving unit includes a first clamping component, a sliding block, a telescopic rod, and a rotating component. This relative fixing device for resisting pipeline stress clamps bent or straight pipes through the fixing and sliding components, facilitating the cutting of bent or straight pipes and providing a relatively safe pipe fixing method. When replacing a pipe, its two ends are clamped onto the two limiting units of the fixing and sliding components, providing stable clamping of the replacement pipe and facilitating welding operations. One worker can complete the pipe replacement work.

Description

Technical Field

[0001] This invention relates to the field of pipe cutting technology, and more particularly to a relative fixing device for resisting pipe stress. Background Technology

[0002] Under prolonged fluid erosion, certain sections of thermal pipelines may suffer damage. In such cases, pipeline cutting and replacement are usually necessary. However, due to thermal stress, the cut section often deviates from its original position under stress, affecting the welding of the new section. In the past, if the stress was minor, manual positioning was commonly used. This method was laborious and prone to swaying during positioning. If the stress was significant, a hand-operated hoist or jack was required for positioning, which was cumbersome, difficult to master, and inherently dangerous. Furthermore, welding the replacement pipeline required one worker to support it while another welded the entire section, necessitating coordinated operation from two workers. Summary of the Invention

[0003] Given that existing pipe stress-resistant fixing devices require two workers to work together during the pipe fixing and welding process, this invention is proposed.

[0004] Therefore, the present invention provides a relatively fixed device for resisting pipeline stress, the purpose of which is to solve the technical problem that requires two workers to cooperate in cutting and welding pipelines.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a base unit, a fixing unit, a limiting unit, and a moving unit.

[0006] The base unit includes a base, a first limiting seat assembly arranged side-by-side with the base, a second limiting seat assembly arranged perpendicularly to the first limiting seat assembly, and a guide rod assembly disposed on the base and connected to the first limiting seat assembly and the second limiting seat assembly.

[0007] The fixing unit includes a fixing component disposed on the base and a sliding component pressed against the limiting seat assembly.

[0008] The limiting unit includes a base plate disposed on the side of the base, a mounting base disposed on the base plate, and a limiting component slidably disposed on the mounting base.

[0009] The moving unit includes a clamping component one connected to the lower end face of the sliding component, a sliding block located below the clamping component one, a telescopic rod disposed on the clamping component one and slidably connected to the sliding block, and a rotating component rotatably disposed within the clamping component one.

[0010] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, the guide rod assembly includes a guide bent rod disposed on the base and connected to the limiting seat assembly two, and a guide straight rod disposed on the base and connected to the limiting seat assembly one.

[0011] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, the limiting seat assembly two includes a limiting seat connected to the guide bend rod, and a clamping assembly two disposed in the limiting seat.

[0012] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, the second clamping component includes a spring disposed in the limiting seat, a clamping block located in the limiting seat, and a pressure plate disposed on the clamping block.

[0013] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, wherein: the limiting seat is provided with an opening one, the limiting seat is provided with an installation groove for installing the spring and the clamping block, and the limiting seat is provided with an opening two communicating with the installation groove.

[0014] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, the limiting component includes a movable plate slidably disposed on the mounting base, a vertical plate disposed on the movable plate, a clamping plate slidably disposed on the movable plate, and a locking part disposed on the movable plate and connected to the clamping plate.

[0015] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, the locking part includes: a fixing plate disposed on the upper surface of the movable plate, a threaded rod threaded on the fixing plate, a rotating circular plate rotatably disposed on the threaded rod, a connecting column disposed on the end face of the rotating circular plate away from the threaded rod and connected to the clamping plate, an extension plate disposed on the connecting column, a profile plate disposed on the bottom surface of the extension plate, and a locking block disposed at the bottom end of the profile plate.

[0016] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, the movable plate is provided with a through groove for the extension plate to pass through; the mounting base is provided with a sliding groove and a strip groove; the inner circumferential surface of the strip groove is provided with a limiting groove that cooperates with the locking block.

[0017] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, wherein: the clamping component one includes a sliding plate that slides and rubs against the upper end face of the guide rod, and a clamping plate disposed on the side of the sliding plate.

[0018] As a preferred embodiment of the anti-pipeline stress relative fixing device of the present invention, the rotating assembly includes a threaded rod II threadedly mounted on the sliding plate, a take-up shaft disposed within the sliding plate, and a connecting rope disposed on the take-up shaft, extending out of the sliding plate and connected to the upper end face of the sliding block.

[0019] The beneficial effects of this invention are as follows: A base unit, a fixing unit, a limiting unit, and a moving unit are provided. Through the cooperation of the sliding block with the guide bend and guide straight rod respectively, the moving unit can be moved along the guide bend or guide straight rod, thereby changing the position of the moving unit and the sliding assembly. The fixing and sliding assemblies clamp the bend or straight pipe, facilitating cutting of the bend or straight pipe and providing a relatively safe pipe fixing method. Changing the direction of the sliding assembly synchronously changes the direction of the limiting unit installed on it, clamping both ends of the replacement pipe onto the two limiting units of the fixing and sliding assemblies. The limiting units stably clamp the replacement pipe, facilitating welding operations. One worker can complete the pipe replacement work. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the relative fixing device for resisting pipeline stress according to the present invention.

[0022] Figure 2 This is a schematic diagram of the installation structure of the relative fixing device for resisting pipeline stress according to the present invention. Figure 1 .

[0023] Figure 3 This is a schematic diagram of the installation structure of the relative fixing device for resisting pipeline stress according to the present invention. Figure 2 .

[0024] Figure 4 This is a schematic diagram of the fixing unit in the relative fixing device for resisting pipeline stress of the present invention.

[0025] Figure 5This is a schematic diagram of the limiting unit in the relative fixing device for resisting pipeline stress of the present invention.

[0026] Figure 6 This is a schematic diagram of the limiting component in the relative fixing device for resisting pipeline stress of the present invention.

[0027] Figure 7 This is a schematic diagram of the locking part in the relative fixing device for resisting pipeline stress of the present invention.

[0028] Figure 8 This is a schematic diagram of the moving unit in the relative fixing device for resisting pipeline stress of the present invention.

[0029] Figure 9 This is a partial cross-sectional view of the moving unit in the relative fixing device for resisting pipeline stress of the present invention.

[0030] Figure 10 This is a partial cross-sectional view of the limiting seat assembly 2 in the relative fixing device for resisting pipeline stress of the present invention. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0035] Example 1, referring to Figure 1-3 and Figure 8This first embodiment of the invention provides a relative fixing device for resisting pipeline stress. The device includes a base unit 100, a fixing unit 200, a limiting unit 300, and a moving unit 400. The moving unit 400 can be moved to different positions via the base unit 100, thus enabling the device to be applied to straight and curved pipes. Simultaneously, when the moving unit 400 changes direction, the limiting unit 300 mounted on the moving unit 400 changes direction synchronously, supporting the replaced pipe and saving manpower for supporting the replaced pipe.

[0036] The base unit 100 includes a base 101, a first limiting seat assembly 102 arranged side by side with the base 101, a second limiting seat assembly 103 arranged perpendicularly to the first limiting seat assembly 102, and a guide rod assembly 104 disposed on the base 101 and connected to the first limiting seat assembly 102 and the second limiting seat assembly 103. The first limiting seat assembly 102 and the second limiting seat assembly 103 have the same structure. The guide rod assembly 104 is installed by the first limiting seat assembly 102 and the second limiting seat assembly 103, and the guide rod assembly 104 can be guided in two directions, thereby adapting to the clamping treatment of straight pipes and curved pipes.

[0037] The fixing unit 200 includes a fixing component 201 disposed on the base 101 and a sliding component 202 pressed against the limiting seat component 102; the fixing component 201 and the sliding component 202 have the same structure; the fixing component 201 includes a mounting plate 201a, a baffle 201b disposed on the mounting plate 201a, and a clamping part 201c disposed on the mounting plate 201a. The clamping part 201c includes a bolt 201c-3 threaded on the mounting plate 201a, a rotating plate 201c-1 disposed on the bolt 201c-3, an annular cover 201c-2 disposed on the outer peripheral surface of the rotating plate 201c-1, and a rotating handle 201c-4 disposed on the annular cover 201c-2. Bolt 201c-3 is eccentrically mounted on rotating plate 201c-1; by rotating handle 201c-4, the annular cover 201c-2, rotating plate 201c-1 and bolt 201c-3 are driven to rotate, thereby causing rotating plate 201c-1 and annular cover 201c-2 to squeeze and clamp the pipeline onto baffle 201b, thereby stably limiting the pipeline.

[0038] The limiting unit 300 includes a base plate 301 disposed on the side of the base 101, a mounting base 302 disposed on the base plate 301, and a limiting component 303 slidably disposed on the mounting base 302. The limiting component 303 stably clamps the pipe to be replaced, ensuring the welding quality. At the same time, the sliding between the limiting component 303 and the mounting base 302 allows for fine adjustment of the welding position.

[0039] The moving unit 400 includes a clamping component 401 connected to the lower end face of the sliding component 202, a sliding block 402 located below the clamping component 401, a telescopic rod 403 disposed on the clamping component 401 and slidably connected to the sliding block 402, and a rotating component 404 rotatably disposed within the clamping component 401. The upper end face of the sliding block 402 is provided with a guide groove 402a, the lower end face of the sliding block 402 is provided with a guide groove 402b, and the upper end face of the sliding block 402 is provided with a mounting groove 402c for mounting the telescopic rod 403.

[0040] Preferably, the guide rod assembly 104 includes a guide curved rod 104a disposed on the base 101 and connected to the limiting seat assembly 103, and a guide straight rod 104b disposed on the base 101 and connected to the limiting seat assembly 102. The guide curved rod 104a is located above the guide straight rod 104b; the guide groove 402a engages with the guide curved rod 104a; the guide groove 402b engages with the guide straight rod 104b; thereby enabling a change in the direction of the moving unit 400. The guide straight rod 104b can be a rod of variable length. When a single rod is used, the guide straight rod 104b may include a fixed rod 1 mounted on the base 101, a threaded connecting rod mounted on the fixed rod 1, a threaded sleeve threadedly connected to the threaded connection, and a fixed rod 2 rotatably disposed on the internal threaded sleeve and connected to the limiting seat assembly 102. When two guide rods 104b are selected, both guide rods 104b can pass through the limiting seat assembly 102. Locking bolts are set on the limiting seat assembly 102. The position of the limiting seat assembly 102 can be changed by locking the guide rods 104b with the locking bolts. It can also clamp pipes of different cut lengths.

[0041] During use, the sliding block 402, in conjunction with the guide bend 104a and guide straight rod 104b respectively, enables the moving unit 400 to move along the guide bend 104a or the guide straight rod 104b, thereby changing the position of the moving unit 400 and the sliding component 202. The fixed component 201 and the sliding component 202 clamp the bend or straight pipe, facilitating the cutting of the bend or straight pipe and providing a relatively safe pipe fixing method. The change in the direction of the sliding component 202 drives the limiting unit 300 installed on the sliding component 202 to change direction synchronously, clamping both ends of the replacement pipe onto the two limiting units 300 of the fixed component 201 and the sliding component 202. The limiting units 300 stably clamp the replacement pipe, facilitating welding operations. One worker can complete the pipe replacement work.

[0042] Example 2, refer to Figure 1-8 This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: the operation of the locking part 303d enables the clamping plate 303c to move, and the clamping plate 303c and the upright plate 303b clamp the replaced pipe; at the same time, when the locking part 303d is operated, the locking block 303d-7 is engaged and locked in the mounting base 302, thereby stably limiting the locking part 303d and the moving plate 303a on the mounting base 302, preventing the moving plate 303a from sliding between the moving plate 303a and the mounting base 302, and making the clamping position of the replaced pipe stable.

[0043] Compared to Embodiment 1, the second limiting seat assembly 103 further includes a limiting seat 103a connected to the guide rod 104a, and a second clamping assembly 103b disposed within the limiting seat 103a. The clamping assembly 103b clamps the first clamping assembly 401, thereby achieving stable limiting of the moving unit 400.

[0044] Furthermore, the second clamping component 103b includes a spring 103b-1 disposed within the limiting seat 103a, a clamping block 103b-2 disposed within the limiting seat 103a, and a pressure plate 103b-3 disposed on the clamping block 103b-2. The end face of the clamping block 103b-2 facing the opening 103a-1 is an inclined surface; the sliding friction between the first clamping component 401 and the inclined surface pushes the clamping block 103b-2 downward, thereby facilitating the engagement and clamping of the first clamping component 401 and the second clamping component 103b.

[0045] Preferably, the limiting seat 103a has an opening 103a-1, and the limiting seat 103a has a mounting groove 103a-2 for mounting the spring 103b-1 and the clamping block 103b-2. The limiting seat 103a has an opening 2 103a-3 that communicates with the mounting groove 103a-2. The opening 103a-1 communicates with the mounting groove 103a-2. The two ends of the spring 103b-1 are respectively connected to the inner wall of the mounting groove 103a-2 and the bottom surface of the clamping block 103b-2. The pressure plate 103b-3 is located in the opening 2 103a-3. By pressing down the pressure plate 103b-3, the clamping block 103b-2 is driven to move downward, so that the clamping block 103b-2 is separated from the clamping assembly 401, and the locking state of the clamping assembly 401 is released.

[0046] In particular, the limiting component 303 includes a movable plate 303a slidably disposed on the mounting base 302, a vertical plate 303b disposed on the movable plate 303a, a clamping plate 303c slidably disposed on the movable plate 303a, and a locking part 303d disposed on the movable plate 303a and connected to the clamping plate 303c. The movable plate 303a slides on the mounting base 302, changing the positions of the clamping plate 303c, the locking part 303d, and the vertical plate 303b, which can adjust the position of the clamped replacement pipe and can also clamp replacement pipes with a small variation in length.

[0047] Furthermore, the locking part 303d includes a fixed plate 303d-1 disposed on the upper end face of the movable plate 303a, a threaded rod 303d-2 threaded on the fixed plate 303d-1, a rotating circular plate 303d-3 rotatably disposed on the threaded rod 303d-2, a connecting post 303d-4 disposed on the end face of the rotating circular plate 303d-3 away from the threaded rod 303d-2 and connected to the clamping plate 303c, an extension plate 303d-5 disposed on the connecting post 303d-4, an L-shaped plate 303d-6 disposed on the bottom surface of the extension plate 303d-5, and a locking block 303d-7 disposed at the bottom end of the L-shaped plate 303d-6. The threaded rod 303d-2 rotates, pushing the rotating circular plate 303d-3 towards the clamping plate 303c. The connecting column 303d-4 pushes the clamping plate 303c towards the vertical plate 303b, clamping the replacement pipe placed between the clamping plate 303c and the vertical plate 303b. Simultaneously, as the connecting column 303d-4 pushes the clamping plate 303c, it also drives the extension plate 303d-5 and the L-shaped plate 303d-5. -6 and locking block 303d-7 move, so that locking block 303d-7 slides in mounting base 302 until it engages with mounting base 302 and locks. At this time, locking block 303d-7 is stably installed on mounting base 302, that is, locking part 303d is fixed on mounting base 302 as a whole. The position of moving plate 303a with locking part 303d installed is fixed with mounting base 302, and the fixing of moving plate 303a and clamping of replacement pipe are realized simultaneously.

[0048] Furthermore, the movable plate 303a is provided with a through groove 303a-1 for the extension plate 303d-5 to pass through; the mounting base 302 is provided with a sliding groove 302a and a strip groove 302b; the inner circumferential surface of the strip groove 302b is provided with a limiting slot 302c that cooperates with the locking block 303d-7. The strip groove 302b is located directly below the through groove 303a-1; the bottom surface of the movable plate 303a is provided with a slider 303e for sliding cooperation with the sliding groove 302a, which limits the movement of the movable plate 303a. The horizontal section of the L-shaped plate 303d-6 is located in the through groove 303a-1, and the vertical section of the L-shaped plate 303d-6 passes through the through groove 303a-1 and extends into the strip groove 302b.

[0049] The remaining structure is the same as that in Example 1.

[0050] Example 3, referring to Figure 1-10 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the sliding block 402 can move up and down by the cooperation of the telescopic rod 403 and the rotating component 404. This allows the sliding block 402 to cooperate and separate from the guide curved rod 104a and the guide straight rod 104b, thereby enabling the moving unit 400 to slide along the guide curved rod 104a or the guide straight rod 104b and achieving a change in direction.

[0051] Compared to Embodiment 2, the first clamping component 401 further includes a sliding plate 401a on the upper end face of the sliding friction guide rod 104a, and a clamping plate 401b disposed on the side of the sliding plate 401a. The clamping plate 401b is provided with a limiting hole for the clamping block 103b-2 to pass through. The clamping block 103b-2 engages and engages in the limiting hole, thereby realizing the engagement and clamping of the first clamping component 401 and the second clamping component 103b.

[0052] Furthermore, the rotating assembly 404 includes a threaded rod 404a threadedly mounted on the sliding plate 401a, a take-up shaft 404b disposed within the sliding plate 401a, and a connecting rope 404c disposed on the take-up shaft 404b, extending out of the sliding plate 401a and connected to the upper end face of the sliding block 402. Rotation of the threaded rod 404a causes the take-up shaft 404b to wind and wind the connecting rope 404c, which in turn causes the sliding block 402 to move towards the sliding plate 401a. The sliding block 402 compresses the telescopic rod 403, thereby causing the guide groove 402a to engage and lock onto the guide curved rod 104a. Reverse rotation of the threaded rod 404a causes the telescopic rod 403 to push the sliding block 402 away from the sliding plate 401a, causing the sliding block 402 to move downwards, and the guide groove 402b to engage and lock onto the guide straight rod 104b.

[0053] The remaining structure is the same as that in Example 2.

[0054] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A relative fixing device for resisting pipeline stress, characterized in that: include, The base unit (100) includes a base (101), a first limiting seat assembly (102) arranged side by side with the base (101), a second limiting seat assembly (103) arranged perpendicularly to the first limiting seat assembly (102), and a guide rod assembly (104) disposed on the base (101) and connected to the first limiting seat assembly (102) and the second limiting seat assembly (103). The fixing unit (200) includes a fixing component (201) disposed on the base (101) and a sliding component (202) pressed against the limiting seat assembly (102). The limiting unit (300) includes a base plate (301) disposed on the side of the base (101), a mounting base (302) disposed on the base plate (301), and a limiting component (303) slidably disposed on the mounting base (302); and, The moving unit (400) includes a clamping component (401) connected to the lower end face of the sliding component (202), a sliding block (402) located below the clamping component (401), a telescopic rod (403) disposed on the clamping component (401) and slidably connected to the sliding block (402), and a rotating component (404) rotatably disposed within the clamping component (401). The upper surface of the sliding block (402) is provided with a guide groove 1 (402a), the lower surface of the sliding block (402) is provided with a guide groove 2 (402b), and the upper surface of the sliding block (402) is provided with an installation groove (402c) for installing the telescopic rod (403). The guide rod assembly (104) includes a guide bent rod (104a) disposed on the base (101) and connected to the limiting seat assembly (103), and a guide straight rod (104b) disposed on the base (101) and connected to the limiting seat assembly (102). Wherein, the guide curved rod (104a) is located above the guide straight rod (104b); the first guide groove (402a) cooperates with the guide curved rod (104a); the second guide groove (402b) cooperates with the guide straight rod (104b); The sliding block (402) cooperates with the guide bend (104a) and the guide straight rod (104b) respectively to enable the moving unit (400) to move along the guide bend (104a) or along the guide straight rod (104b), thereby changing the position of the moving unit (400) and the sliding assembly (202); The fixing component (201) and the sliding component (202) clamp the guide bend (104a) or the guide straight rod (104b).

2. The relative fixing device for resisting pipeline stress according to claim 1, characterized in that: The second limiting seat assembly (103) includes a limiting seat (103a) connected to the guide bent rod (104a), and a second clamping assembly (103b) disposed in the limiting seat (103a).

3. The relative fixing device for resisting pipeline stress according to claim 2, characterized in that: The second clamping assembly (103b) includes a spring (103b-1) disposed in the limiting seat (103a), a clamping block (103b-2) disposed in the limiting seat (103a), and a pressure plate (130b-3) disposed on the clamping block (103b-2).

4. The relative fixing device for resisting pipeline stress according to claim 3, characterized in that: The limiting seat (103a) is provided with an opening (103a-1), the limiting seat (103a) is provided with a mounting groove (103a-2) for installing the spring (103b-1) and the clamping block (103b-2), and the limiting seat (103a) is provided with an opening (103a-3) communicating with the mounting groove (103a-2).

5. The relative fixing device for resisting pipeline stress according to claim 4, characterized in that: The limiting component (303) includes a movable plate (303a) slidably disposed on the mounting base (302), a vertical plate (303b) disposed on the movable plate (303a), a clamping plate (303c) slidably disposed on the movable plate (303a), and a locking part (303d) disposed on the movable plate (303a) and connected to the clamping plate (303c).

6. The relative fixing device for resisting pipeline stress according to claim 5, characterized in that: The locking part (303d) includes a fixed plate (303d-1) disposed on the upper end face of the movable plate (303a), a threaded rod (303d-2) threaded on the fixed plate (303d-1), a rotating circular plate (303d-3) rotatably disposed on the threaded rod (303d-2), a connecting post (303d-4) disposed on the end face of the rotating circular plate (303d-3) away from the threaded rod (303d-2) and connected to the clamping plate (303c), an extension plate (303d-5) disposed on the connecting post (303d-4), an L-shaped plate (303d-6) disposed on the bottom surface of the extension plate (303d-5), and a locking block (303d-7) disposed at the bottom end of the L-shaped plate (303d-6).

7. The relative fixing device for resisting pipeline stress according to claim 6, characterized in that: The movable plate (303a) is provided with a through groove (303a-1) for the extension plate (303d-5) to pass through; the mounting base (302) is provided with a sliding groove (302a) and a strip groove (302b); the inner circumferential surface of the strip groove (302b) is provided with a limiting slot (302c) that cooperates with the locking block (303d-7).

8. The relative fixing device for resisting pipeline stress according to claim 7, characterized in that: The clamping assembly (401) includes a sliding plate (401a) that slides and rubs against the upper end face of the guide rod (104a), and a clamping plate (401b) disposed on the side of the sliding plate (401a).

9. The relative fixing device for resisting pipeline stress according to claim 8, characterized in that: The rotating assembly (404) includes a threaded rod (404a) threadedly mounted on the sliding plate (401a), a take-up shaft (404b) disposed in the sliding plate (401a), and a connecting rope (404c) disposed on the take-up shaft (404b), passing through the sliding plate (401a) and connected to the upper end face of the sliding block (402).

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