Fixing device for destructive test of conduit

Abstract

The utility model discloses a conduit destructive test fixing device, which relates to the technical field of rigid conduit test, and comprises a substrate and two groups of fixing mechanisms, and the substrate is used for bearing a conduit; the fixing mechanisms are provided with limiting channels used for limiting the catheter, and the limiting channels of the two fixing mechanisms are perpendicularly arranged. The fixing mechanism comprises at least two limiting assemblies arranged in the extending direction of limiting channels of the limiting assemblies at intervals, each limiting assembly comprises a first limiting piece and a second limiting piece which are located on the two sides of the guide pipe respectively, and the limiting channels are formed between the first limiting pieces and the second limiting pieces. The first limiting piece is rotatably connected with the base plate, the peripheral face of the first limiting piece comprises a plurality of limiting parts used for abutting against the guide pipe, and the distances between at least two limiting parts and the rotating axis of the first limiting piece are different. The distance between the first limiting piece and the second limiting piece can be changed by rotating the first limiting piece, so that the guide pipes with different diameters are limited, and the consistency of the bending states of the different guide pipes is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rigid conduit testing, and particularly to a fixing device for a conduit destructive test. Background Art

[0002] The conduit system for cable management needs to meet relevant national standard requirements. For example, the national standard with the standard number GB / T20041.21 - 2017 stipulates special requirements for the rigid conduit system. The standard requires a destructive test for non - metallic and composite conduits. Specifically, the conduit is bent into approximately 90° through a test device, and while maintaining the bent state of the conduit, the conduit and the test device are placed in an oven together and baked at a preset temperature for 24h ± 15min. After baking, a pass - through test is carried out through a corresponding gauge.

[0003] Figure 27 A fixing device for a conduit destructive test in an embodiment is shown, which includes a bottom plate 10, a pressing plate 11, and multiple pairs of bolt groups 12 screwed to the bottom plate 10. Each bolt group 12 includes two bolts 13 arranged at intervals. The pressing plate 11 is sleeved on the two paired bolts 13 and can move up and down along the bolts 13. The conduit 1 is pressed between the pressing plate 10 and the bottom plate 11 and maintains a bent state through the limitation of multiple bolts 13.

[0004] The defect of this fixing device for a conduit destructive test is that since the distance between the two paired bolts 13 is the same, the applicable diameter size of the conduit 1 is relatively single. If the diameter of the conduit 1 is too small compared to the distance between the two bolts 13, the conduit 1 will abut against the outer bolt under the action of its own elasticity. As a result, after conduits with different diameters are placed in the fixing device, the bending angles are inconsistent, affecting the accuracy of the test results. Therefore, conduits with different diameters usually need to use different fixing devices for fixation, or the conduit 1 is pressed by the pressing plate to make the conduit 1 maintain an appropriate bending angle. However, if the pressure is too high, the risk that the conduit 1 cannot pass the test will increase.

[0005] Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Content of the Utility Model

[0006] The purpose of the utility model is to provide a fixing device for a conduit destructive test, which can be applicable to a variety of different conduits for testing and improve the consistency of the bent state of the conduit.

[0007] To achieve the above - mentioned utility model purpose, the utility model provides a fixing device for a conduit destructive test, which includes:

[0008] A base plate for carrying the conduit; and,

[0009] Two sets of limiting mechanisms, each of which is provided with a limiting channel for limiting the catheter, and the limiting channels of the two sets of limiting mechanisms are vertically arranged;

[0010] The limiting mechanism includes at least two sets of limiting components arranged at intervals along the extending direction of its own limiting channel. The limiting component includes a first limiting member and a second limiting member respectively located on both sides of the catheter, and the limiting channel is formed between the first limiting member and the second limiting member;

[0011] The first limiting member is rotatably connected to the substrate, and the outer peripheral surface of the first limiting member includes a plurality of limiting portions for abutting against the catheter, and at least two of the limiting portions are at different distances from the rotation axis of the first limiting member.

[0012] Furthermore, the outer peripheral surface of the first limiting member is arc-shaped, and the first limiting member is a cam.

[0013] Furthermore, the substrate is provided with a plurality of indicating lines corresponding to the first limiting member, and the indicating lines are used to indicate the rotation position of the first limiting member.

[0014] Furthermore, the outer peripheral surface of the first limiting member includes a plurality of abutting planes, and the abutting planes are used as limiting portions. The distances between the plurality of abutting planes and the rotation axis are all different.

[0015] Furthermore, the limiting portion includes an arc surface for abutting against the catheter, and the radius of the arc surface is greater than or equal to the outer radius of the catheter, and at least part of the arc surface is located directly above at least part of the catheter; or,

[0016] The limiting portion includes an inclined surface for abutting against the catheter, and at least part of the inclined surface is located directly above at least part of the catheter.

[0017] Furthermore, the fixed device for catheter destructive test further includes a fixing mechanism for fixing the first limiting member. The fixing mechanism includes a fixing seat connected to the substrate and an abutting member screwed to the fixing seat, and the abutting member is used to abut against the outer peripheral surface of the first limiting member.

[0018] Furthermore, the limiting component includes a first fastener connected to the substrate, and the first limiting member is rotatably connected to the first fastener.

[0019] Furthermore, the first fastener includes a threaded portion screwed to the substrate, a smooth shaft portion connected to the threaded portion, and a head connected to the smooth shaft portion. The cross-sectional dimension of the head is larger than the cross-sectional dimension of the smooth shaft portion, and the first limiting member is provided with a rotating shaft hole adapted to the smooth shaft portion.

[0020] Further, the limiting component further includes a second fastener for connecting the second limiting member to the substrate, a pressing plate slidably engaged with the first fastener and the second fastener, and a fixing member screwed to the pressing plate, and the fixing member abuts against the upper end of the conduit.

[0021] Further, the second limiting member is fixedly connected to the substrate; or,

[0022] the second limiting member is rotatably connected to the substrate and has the same structure as the first limiting member

[0023] Compared with the prior art, the utility model has the following beneficial effects: The fixing device for the conduit destructive test includes a substrate and two sets of fixing mechanisms. The fixing mechanism includes at least two sets of limiting components. The limiting component includes a first limiting member and a second limiting member. A limiting channel is formed between the first limiting member and the second limiting member. The limiting channels of the two sets of fixing mechanisms are vertically arranged, and the limiting components of the fixing mechanism are arranged at intervals along the extending direction of the limiting channel; the outer peripheral surface of the first limiting member includes a plurality of limiting portions for abutting against the conduit, and at least two of the limiting portions are at different distances from the rotation axis of the first limiting member. The first limiting member is rotatably connected to the substrate. By rotating the first limiting member, the distance between the first limiting member and the second limiting member can be changed, so as to limit conduits with different diameters, and at the same time, the consistency of the bending states of different conduits is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of a fixing device for a conduit destructive test in an embodiment of the utility model. In the figure, the first limiting member and the second limiting member have different structures.

[0025] Figure 2 is Figure 1 a perspective view of the fixing device for the conduit destructive test shown, where 1 and Figure 2 have different angles.

[0026] Figure 3 is Figure 1 a top view of the fixing device for the conduit destructive test shown.

[0027] Figure 4 is Figure 3 a sectional view taken along the cutting line A-A in.

[0028] Figure 5 is Figure 1 a top view of the fixing device for the conduit destructive test shown with the conduit and the pressing plate removed.

[0029] Figure 6 is Figure 1 a perspective view of the first limiting member in.

[0030] Figure 7 It is a top view of a fixing device for the catheter destructive test in an embodiment of the present utility model. In the figure, the first limiting member and the second limiting member have the same structure.

[0031] Figure 8 It is Figure 7 The sectional view taken along the B-B cutting line in

[0032] Figure 9 It is Figure 1 The top view of the catheter destructive test fixing device shown in with the catheter and the pressing plate removed. The indication line is shown in the figure.

[0033] Figure 10 It is Figure 6 The top view of the catheter destructive test fixing device shown in with the catheter and the pressing plate removed. The indication line is shown in the figure.

[0034] Figure 11 It is a top view of a fixing device for the catheter destructive test in an embodiment of the present utility model. In the figure, the first limiting member includes an abutting plane.

[0035] Figure 12 It is Figure 11 The sectional view taken along the C-C cutting line in

[0036] Figure 13 It is Figure 11 The three-dimensional view of the first limiting member in . In the figure, the first limiting member includes an abutting plane.

[0037] Figure 14 It is Figure 12 The front view of the first fastener in .

[0038] Figure 15 It is a top view of a fixing device for the catheter destructive test in an embodiment of the present utility model. In the figure, a fixing member is provided on the pressing plate.

[0039] Figure 16 It is Figure 15 The sectional view taken along the D-D cutting line in .

[0040] Figure 17 It is a top view of a fixing device for the catheter destructive test in an embodiment of the present utility model. In the figure, the first limiting member includes an arc surface and an abutting plane.

[0041] Figure 18 It is Figure 17 The sectional view taken along the E-E cutting line in .

[0042] Figure 19 It is Figure 17 The three-dimensional view of the first limiting member in . In the figure, the first limiting member includes an arc surface and an abutting plane.

[0043] Figure 20 is Figure 19 The sectional view of the first limiting member shown in the figure.

[0044] Figure 21 is Figure 18 The partial enlarged view at position Ⅰ in the figure.

[0045] Figure 22 is the top view of the fixing device for the catheter destructive test in an embodiment of the present utility model. In the figure, the first limiting member includes a first inclined surface and an abutting plane.

[0046] Figure 23 is Figure 22 The sectional view obtained by cutting along the cutting line F-F in the figure.

[0047] Figure 24 is Figure 23 The three-dimensional view of the first limiting member in the figure. In the figure, the first limiting member includes a first inclined surface and an abutting plane.

[0048] Figure 25 is Figure 24 The sectional view of the first limiting member shown in the figure.

[0049] Figure 26 is Figure 23 The partial enlarged view at position Ⅱ in the figure.

[0050] Figure 27 is the three-dimensional view of a fixing device for the catheter destructive test in the prior art. Detailed implementation manners

[0051] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. It can be understood that the specific embodiments described herein are only for explaining the present application, rather than limiting the present application. Additionally, it should be noted that for the sake of description, only the parts related to the present application are shown in the accompanying drawings, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0052] The terms "including" and "having" in the present application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0053] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0054] As Figures 1 to 6 shown, a fixing device for a catheter destructive test corresponding to a preferred embodiment of the present invention includes a substrate 2 and two sets of limiting mechanisms 3. The substrate 2 is used to carry the catheter 1. The fixing device for the catheter destructive test needs to be baked at a preset temperature for 24 h ± 15 min. The substrate 2 can be made of high-temperature resistant hard materials such as stainless steel and aluminum alloy, for example.

[0055] Referring to Figure 5 , the limiting mechanism 3 is provided with a limiting channel 30 for limiting the catheter 1. The limiting channels 30 of the two sets of limiting mechanisms 3 are vertically arranged. The catheter 1 is arranged in the limiting channels 30 formed by the two sets of limiting mechanisms 3. Since the two limiting channels 30 are perpendicular to each other, the catheter 1 will also be fixed on the substrate 2 in a substantially vertical state.

[0056] The limiting mechanism 3 includes at least two sets of limiting components 31 arranged at intervals along the extending direction of its own limiting channel 30. Specifically, the extending direction of one limiting channel 30 is the first direction 3a, and the extending direction of the other limiting channel 30 is the second direction 3b. The limiting components 31 of one of the two sets of limiting mechanisms 3 are arranged at intervals along the first direction 3a, and the limiting components 31 of the other are arranged at intervals along the second direction 3b, and the first direction 3a and the second direction 3b are perpendicular to each other; in the figure, the first direction 3a is the same as the X-axis direction, and the second direction 3b is the same as the Y-axis direction. The limiting component 31 includes a first limiting member 310 and a second limiting member 311 respectively located on both sides of the catheter 1. A limiting channel 30 is formed between the first limiting member 310 and the second limiting member 311. The catheter 1 is arranged in the limiting channel 30 and abuts against the first limiting member 310 and the second limiting member 311, and the horizontal position of the catheter 1 is limited by the abutment, so that the catheter 1 is kept in a state of being bent at 90°.

[0057] The distance L between the first limiting member 310 and the second limiting member 311 determines the width of the limiting channel 30. In order to enable the limiting channel 30 formed between the first limiting member 310 and the second limiting member 311 to accommodate conduits 1 with different diameters, the first limiting member 310 is arranged to be rotatably connected to the substrate 2, and the outer peripheral surface of the first limiting member 310 includes a plurality of limiting portions 3103 for abutting against the conduit 1. At least two of the limiting portions 3103 are at different distances from the rotation axis 310a of the first limiting member 310. By rotating the first limiting member 310 so that the limiting portions 3103 with different lengths from the rotation axis 310a abut against the conduit 1, the test of conduits 1 with different diameters can be realized, and the rotation axis 310a is arranged along the Z-axis.

[0058] When installing the conduit 1, the conduit 1 can be first placed between the first limiting member 310 and the second limiting member 311, and by rotating the first limiting member 310, the limiting portion 3103 is rotated to the position abutting against the conduit 1, so that both sides of the conduit 1 abut against the first limiting member 310 and the second limiting member 311 respectively. At this time, the horizontal position of the conduit 1 is fixed. Since the first limiting member 310 includes a plurality of limiting portions 3103 at different distances from the rotation axis 310a, for conduits 1 with different diameters, different limiting portions 3103 can be selected to abut against the conduit 1, so that the conduit 1 is reliably fixed. After different limiting portions 3103 are rotated to correspond to the second limiting member 311, the distance between the limiting portion 3103 and the second limiting member 311 is adapted to the diameter of the conduit 1 of the corresponding specification, so that conduits 1 with different diameters can be reliably fixed, ensuring the consistency of the bending states of different conduits.

[0059] In one embodiment, as Figures 1 to 6 shown, the second limiting member 311 is fixedly connected to the substrate 2, and the position of the second limiting member 311 remains unchanged; for example, in the embodiment as Figures 1 to 5 shown, the second limiting member 311 is a rectangular fixed block; the fixing device for the conduit destructive test can adjust the width of the limiting channel 30 by rotating the first limiting member 310.

[0060] In another embodiment, as Figure 7 and Figure 8 shown, the second limiting member 311 is rotatably connected to the substrate 2 and has the same structure as the first limiting member 310. The distance of the limiting channel 30 can be adjusted by rotating the first limiting member 310 and / or the second limiting member 311. Since both limiting members can be rotated, the range of the change in the distance between the two limiting members is larger, and more specifications of conduits 1 can be limited.

[0061] In some embodiments, as Figure 3 、 Figure 6 and Figure 7As shown, the outer peripheral surface of the first limiting member 310 is arc-shaped. Optionally, the first limiting member 310 is a cam (including an eccentric cam), and its outer peripheral surface has multiple positions at different distances from the rotation axis 310a of the first limiting member 310. The limiting portion 3103 is a part of the outer peripheral surface, and the outer peripheral surface abuts against the conduit 1 to limit the conduit 1. When the first limiting member 310 rotates around the rotation axis 310a, the distance between the part of the outer peripheral surface facing the second limiting member 311 and the second limiting member 311 also changes, so that the distance between the first limiting member 310 and the second limiting member 311 can adapt to conduits 1 of different diameters. The part of the outer peripheral surface that abuts against the conduit 1 of different sizes is the limiting portion 3103.

[0062] As Figure 3 and Figure 7 shown, in some embodiments, the conduit destructive test fixing device further includes a fixing mechanism 4 for fixing the first limiting member 310. The fixing mechanism 4 includes a fixing seat 40 connected to the substrate 2 and an abutting member 41 screwed to the fixing seat 40. The abutting member 41 is used to abut against the outer peripheral surface of the first limiting member 310, thereby improving the stability when the conduit 1 abuts against the first limiting member 310. After the first limiting member 310 abuts against the conduit 1, the abutting member 41 can be rotated to abut against the first limiting member 310, thereby fixing the current position of the first limiting member 310 and preventing it from rotating.

[0063] Referring Figure 7 to, when the second limiting member 311 can also rotate, a fixing mechanism 4 can also be provided on one side of the second limiting member 311. In one embodiment, for the convenience of installation, two abutting members 41 share one fixing seat 40. It can be understood that in another embodiment, each abutting member 41 can correspond to one fixing seat 40.

[0064] In some embodiments, as Figure 9 shown, in order to more accurately define the horizontal position of the conduit 1, the substrate 2 is provided with a plurality of indication lines 20 corresponding to the first limiting member 310. The indication lines 20 are used to indicate the rotation position of the first limiting member 310. The distance between the indication lines 20 and the second limiting member 311 is the same as the diameter of a certain specification of the conduit 1. The distances between different indication lines 20 and the second limiting member 311 are the same as the diameters of different conduits 1. Therefore, when the first limiting member 310 rotates until its outer peripheral surface is tangent to different indication lines 20, it indicates that the width of the limiting channel 30 matches the diameter of the corresponding conduit 1 at this time. In this way, the limitation of the conduit 1 will not be too loose or too tight.

[0065] It can be understood that referring Figure 10When the second limiting member 311 can also rotate relative to the substrate 2 to adjust the distance from the first limiting member 310, an indicating line 20 corresponding to the second limiting member 311 can also be provided.

[0066] In some embodiments, as Figures 11 to 13 shown, the outer peripheral surface of the first limiting member 310 includes a plurality of abutting planes 310b. Using the abutting plane 310b as the limiting portion 3103 to abut against the catheter 1, thereby limiting the catheter 1. Optionally, the distances between the plurality of abutting planes 310b and the rotation axis 310a are all different, and each abutting plane 310b corresponds to a catheter 1 of a certain specification. In the figure, the first limiting member 310 is rectangular in shape. In other embodiments, the first limiting member 310 can also be hexagonal or other polygonal shapes.

[0067] As Figure 12 shown, the limiting assembly 31 includes a first fastener 32 connected to the substrate 2. The first limiting member 310 is rotatably connected to the first fastener 32, so as to conveniently adjust the position of the first limiting member 310 and the catheter 1.

[0068] Furthermore, as Figure 14 shown, the first fastener 32 includes a threaded portion 320 screwed to the substrate 2, a smooth shaft portion 321 connected to the threaded portion 320, and a head portion 322 connected to the smooth shaft portion 321. The cross-sectional dimension of the head portion 322 is larger than that of the smooth shaft portion 321, thereby playing a limiting role in the Z-axis direction for the first limiting member 310; the first limiting member 310 is provided with a rotating shaft hole 3100 adapted to the smooth shaft portion 321, and the first limiting member 310 can rotate around the first fastener 32; the substrate 2 is provided with a threaded hole corresponding to the threaded portion 320, and the first fastener 32 is threadedly connected to the substrate 2. Optionally, the first fastener 32 is a bolt.

[0069] As Figure 12 shown, the limiting assembly 31 further includes a second fastener 33 for connecting the second limiting member 311 to the substrate 2 and a pressing plate 34 that is slidably mated with the first fastener 32 and the second fastener 33; the pressing plate 34 and the substrate 2 respectively abut against opposite sides of the catheter 1, thereby limiting the degree of freedom of the catheter 1 in the height direction; optionally, the first fastener 32 and the second fastener 33 have the same structure; the pressing plate 34 includes a through hole 340, the first fastener 32 and the second fastener 33 pass through the through hole 340, and the head portions 322 of the first fastener 32 and the second fastener 33 play a limiting role on the pressing plate 34.

[0070] As Figure 15 and Figure 16As shown, the limiting mechanism 3 also includes a fixing member 35 abutting against the catheter 1. When there is a gap between the pressure plate 34 and the catheter, the catheter 1 can be fixed by the fixing member 35; optionally, the fixing member 35 is a bolt, and the pressure plate 34 is provided with a threaded hole threadedly matched with the fixing member 35. The fixing member 35 is rotated to make one end of it abut against the catheter 1, thereby fixing the catheter 1.

[0071] The limiting portion 3103 is configured to be concave in order to better define the position of the catheter 1 .

[0072] In one embodiment, the limiting portion 3103 includes an arc surface 3101 for contacting the catheter 1, and the radius of the arc surface 3101 is greater than or equal to the outer radius of the catheter 1. The arc surface 3101 is at least partially located directly above a portion of the catheter 1. Under the limitation of the arc surface 3101, the catheter 1 will not upwardly break away from the first limiting member 310, so the pressure plate 34 may not be provided. Of course, the pressure plate 34 may also be provided. Figures 17 to 21 As shown, the arc surface 3101 is connected to the upper end of the abutting plane 310b and extends to the top of part of the catheter 1. The arc surface 3101 and the abutting plane 310b abut against the catheter 1 together, which can limit the freedom of the catheter 1 in the height direction.

[0073] In another embodiment, the limiting portion 3103 includes an inclined surface 3102 for contacting the catheter 1, and the inclined surface 3102 is at least partially located directly above a portion of the catheter 1, which can limit the freedom of the catheter 1 in the height direction. Figures 22 to 26 As shown, the inclined surface 3102 abuts against the abutting plane 310b and extends to the top of a portion of the conduit 1 . The inclined surface 3102 and the abutting plane 310b abut against the conduit 1 together, and can limit the freedom of the conduit 1 in the height direction.

[0074] It can be understood that the first limit member 310 and the second limit member 311 are detachable from the base plate 2. When the limit channel 30 formed by the first limit member 310 and the second limit member 311 cannot meet the diameter of the catheter 1, the first limit member 310 and the second limit member 311 of different sizes can be replaced, so that the catheter destructive test fixture can adapt to catheters 1 of more sizes.

[0075] The above are only specific implementations of the present invention, and any improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. A fixing device for catheter destructive test, characterized in that Comprising: a substrate (2) for carrying a conduit (1); and, two sets of limiting mechanisms (3), the limiting mechanism (3) being provided with a limiting channel (30) for limiting the conduit (1), and the limiting channels (30) of the two sets of limiting mechanisms (3) being vertically arranged; the limiting mechanism (3) includes at least two sets of limiting components (31) spaced along the extension direction of its own limiting channel (30), the limiting component (31) including a first limiting member (310) and a second limiting member (311) respectively located on both sides of the conduit (1), and a limiting channel (30) being formed between the first limiting member (310) and the second limiting member (311); the first limiting member (310) is rotatably connected to the substrate (2), and the outer peripheral surface of the first limiting member (310) includes a plurality of limiting portions (3103) for abutting against the conduit (1), and at least two of the limiting portions (3103) have different distances from the rotation axis (310a) of the first limiting member (310).

2. The catheter destructive test fixing device according to claim 1, characterized in that, The outer peripheral surface of the first limiting member (310) is arc-shaped, and the first limiting member (310) is a cam.

3. The catheter destructive test fixing device according to claim 2, characterized in that, The substrate (2) is provided with a plurality of indicating lines (20) corresponding to the first limiting member (310), and the indicating lines (20) are used to indicate the rotation position of the first limiting member (310).

4. The catheter destructive test fixing device according to claim 1, characterized in that, The outer peripheral surface of the first limiting member (310) includes a plurality of abutting planes (310b), and using the abutting planes (310b) as the limiting portions (3103), the distances between the plurality of abutting planes (310b) and the rotation axis (310a) are all different.

5. The fixing device for the destructive test of a conduit according to claim 4, wherein the limiting portion (3103) includes an arc surface (3101) for abutting against the conduit, and the radius of the arc surface (3101) is greater than or equal to the outer radius of the conduit (1), and the arc surface (3101) is at least partially located directly above a part of the conduit (1); or, the limiting portion (3103) includes an inclined surface (3102) for abutting against the conduit (1), and the inclined surface (3102) is at least partially located directly above a part of the conduit (1).

6. The catheter destructive test fixing device according to claim 1, wherein, The fixing device for the destructive test of a conduit further includes a fixing mechanism (4) for fixing the first limiting member (310), the fixing mechanism (4) including a fixing seat (40) connected to the substrate (2) and an abutting member (41) screwed to the fixing seat (40), and the abutting member (41) being used to abut against the outer peripheral surface of the first limiting member (310).

7. The catheter destructive test fixing device according to any one of claims 1 to 6, characterized in that, The limiting component (31) includes a first fastening member (32) connected to the substrate (2), and the first limiting member (310) is rotatably connected to the first fastening member (32).

8. The catheter destructive test fixing device according to claim 7, wherein, The first fastener (32) includes a threaded portion (320) screwed to the substrate (2), a smooth shaft portion (321) connected to the threaded portion (320), and a head portion (322) connected to the smooth shaft portion (321). The cross-sectional dimension of the head portion (322) is larger than that of the smooth shaft portion (321). The first limiting member (310) is provided with a rotating shaft hole (3100) adapted to the smooth shaft portion (321).

9. The catheter destructive test fixing device according to claim 7, characterized in that, The limiting assembly (31) further includes a second fastener (33) for connecting the second limiting member (311) to the substrate (2), a pressing plate (34) slidably engaged with the first fastener (32) and the second fastener (33), and a fixing member (35) screwed to the pressing plate (34). The fixing member (35) abuts against the upper end of the conduit (1).

10. The catheter destructive test fixing device according to any one of claims 1 to 6, characterized in that, The second limiting member (311) is fixedly connected to the substrate (2); or The second limiting member (311) is rotatably connected to the substrate (2) and has the same structure as the first limiting member (310).

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