Positioning unit for reducer pipe test and reducer pipe tension test device

Abstract

The embodiment of the utility model provides a positioning unit for reducer pipe testing and a reducer pipe tension testing device, and belongs to the technical field of medical treatment. The positioning unit comprises a first base, the first base is provided with a positioning groove used for allowing a first pipe section of the to-be-detected reducer pipe to penetrate through and stopping a second pipe section of the to-be-detected reducer pipe from penetrating through, and the outer diameter of the first pipe section is smaller than that of the second pipe section; wherein the first base comprises a first groove side wall and a second groove side wall, and an inclined included angle is formed between the first groove side wall and the second groove side wall to form a positioning groove. The variable-diameter pipe tension testing device comprises a traction unit and a positioning unit, wherein a first base in the positioning unit is used for positioning a to-be-tested variable-diameter pipe; the traction unit is used for being in clamping fit with the first pipe section of the to-be-tested reducer pipe and applying pulling force to the to-be-tested reducer pipe. The positioning unit and the variable-diameter pipe tension testing device are simple in structure, can perform positioning and tension testing on different types of variable-diameter pipes, and are higher in compatibility.

Description

Technical Field

[0001] The present application relates to the field of medical technology, and in particular to a positioning unit for testing a reducer and a reducer tension testing device. Background Art

[0002] A balloon catheter is a medical interventional device, commonly used for dilation treatment of vascular stenosis. When performing coronary stent implantation in clinical medical practice, after the balloon catheter is delivered into the body, a certain pressure needs to be delivered into the balloon to expand the balloon, open the narrowed blood vessel wall, and restore the diseased blood vessels to normal. During the production process, it is very important to measure the connection strength at the variable diameter position of the variable diameter catheter. In the prior art, a patent with publication number CN209656431U discloses a fixing device for balloon catheter tension testing. However, when the catheter is clamped and positioned in this solution, the clamping bayonet can only clamp and position one type of variable diameter catheter. When different types of variable diameter catheters need to be tested, the tooling needs to be replaced, which is not compatible with the testing of multiple types of variable diameter catheters, resulting in low test efficiency. Utility Model Content

[0003] The embodiments of the present application provide a positioning unit for reducing tube testing and a reducing tube tension testing device, which have a simple structure, can perform positioning and tension testing on reducing tubes of different models, and have stronger compatibility.

[0004] In a first aspect, an embodiment of the present application provides a positioning unit for testing a reducer, the positioning unit comprising a first base, the first base having a positioning groove for allowing a first pipe section of the reducer to be tested to pass through and blocking the second pipe section thereof from passing through, the outer diameter of the first pipe section being smaller than the outer diameter of the second pipe section; wherein the first base comprises a first groove side wall and a second groove side wall, the first groove side wall and the second groove side wall forming a positioning groove at an inclined angle therebetween.

[0005] In this solution, a positioning groove is provided on the first base, and the positioning groove can allow the first pipe section of the reducer to be tested to pass through and block the second pipe section from passing through, so as to position the reducer to be tested, which is beneficial for the subsequent tensile test of the reducer to be tested; and there is an inclined angle between the first groove side wall and the second groove side wall in the positioning groove, that is, the opening size of the positioning groove gradually increases along its extension direction, and different positions of the opening on the positioning groove can position different types of reducers to be tested, so that the positioning unit can meet the positioning requirements of various different types of reducers, and has stronger compatibility. When dealing with the testing requirements of different types of reducers, only one set of positioning units is needed, which has a simple structure, more convenient operation, and higher testing efficiency.

[0006] In some embodiments, along the extension direction of the positioning groove, a plurality of grooves are formed on the first groove sidewall and the second groove sidewall.

[0007] In the above technical solution, by forming a plurality of grooves on the first groove side wall and the second groove side wall, compared with the first groove side wall and the second groove side wall being planes, the grooves can contact the outer wall of the first pipe section of the reducer to be measured and play a certain limiting role on the reducer to be measured, thereby reducing the probability of the reducer to be measured moving in the direction in which the opening of the positioning groove becomes larger, and correspondingly improving the positioning effect of the positioning unit on the reducer to be measured.

[0008] In some embodiments, the first base includes a first top wall and two first side walls, the positioning groove is located on the first top wall, and the tops of the two first side walls are respectively connected to opposite sides of the first top wall to form a receiving area for receiving the second pipe segment.

[0009] In the above technical solution, the first base includes a first top wall and two first side walls, the two first side walls are located on both sides of the first top wall, the first side walls provide support for the first top wall, and the first base forms a accommodating area below the first top wall, and the accommodating area can accommodate the second pipe section of the reducer to be tested.

[0010] In some embodiments, the bottom of the first side wall extends toward a side away from the first top wall to form an extension portion, and the extension portion is provided with a connection hole for the fastener to pass through.

[0011] In the above technical solution, an extension portion is formed on one side of the bottom of the first side wall, and a fastener passes through a connection hole on the extension portion to be fixedly connected to the test bench, so that the first base is firmly fixed.

[0012] In some embodiments, the connecting hole is an elongated hole, and the length direction of the connecting hole is arranged in the same direction as the extension direction of the positioning groove.

[0013] In the above technical solution, since the contact positions of different types of reducers to be tested and the positioning grooves on the first base are different, and the position of the tensile tester is generally relatively fixed, the connecting hole is adopted as a long strip hole. In this way, when the first base is fixed, the fastener can be moved along the length direction of the long strip hole, so that the relative position of the first base and the test bench can be adjusted so that the reducer to be tested on the first base can be aligned with the tensile tester, thereby meeting the positioning requirements of different types of reducers to be tested.

[0014] In the second aspect, an embodiment of the present application provides a reducer tensile testing device, which includes a pulling unit and the aforementioned positioning unit for reducer testing, wherein the first base in the positioning unit is used to position the reducer to be tested; the pulling unit is used to clamp and cooperate with the first pipe section of the reducer to be tested and apply tension to the reducer to be tested; wherein the positioning groove is V-shaped in a direction perpendicular to the tension direction.

[0015] In this solution, the first base in the positioning unit can position the reducer to be tested, and the pulling unit can clamp the first pipe section extending from the positioning groove on the first base and provide tension to the first pipe section until the reducer connection or intersection of the reducer breaks, and the maximum breaking force is recorded to complete the tension test of the reducer to be tested. In addition, the positioning groove on the first base is V-shaped, that is, the opening size of the positioning groove gradually increases, and different positions of the opening on the positioning groove can position different types of reducers to be tested, so that the positioning unit can meet the positioning requirements of multiple different types of reducers, and has stronger compatibility.

[0016] In some embodiments, the front end of the positioning slot is open.

[0017] In the above technical solution, the front end of the positioning groove is opened, so when the reducer to be measured is clamped and fixed, there is no need to pass the reducer to be measured from the bottom of the first top wall upward. The reducer to be measured can be directly inserted into the positioning groove from the front end side of the positioning groove, which reduces the difficulty of clamping and positioning the reducer to be measured.

[0018] In some embodiments, the pulling unit includes a second base and a clamping assembly, the second base is used to connect to the tensile tester, and the second base has a clamping area; the clamping assembly is arranged in the clamping area, and the clamping assembly is used to clamp the first pipe section of the reducer to be tested.

[0019] In the above technical solution, by setting the clamping assembly on the second base, the clamping assembly can clamp and fix the first pipe section extending into the clamping area, and complete the tensile test of the reducer to be tested under the action of the tensile tester.

[0020] In some embodiments, the second base includes a second top wall and two second side walls, and the two second side walls are connected to opposite sides of the second top wall to form a clamping area; the clamping assembly includes two locking screws, and the two locking screws are respectively arranged on the two second side walls and engaged with the second side wall threads, and the two locking screws are located at the abutting ends of the clamping area to clamp the first pipe section.

[0021] In the above technical solution, the locking screw cooperates with the second side wall thread of the second base. By rotating the locking screw forward or backward, the telescopic adjustment of the two locking screws can be achieved. The clamping assembly has a simple structure, convenient and fast operation, and low cost.

[0022] In some embodiments, a clamp is provided at the abutting end of the locking screw, and the locking screw abuts against the outer wall of the first pipe section through the clamp.

[0023] In the above technical solution, a clip is provided at the abutting end of the locking screw, which can increase the contact area between the locking screw and the first pipe section, reduce the probability of slippage between the locking screw and the first pipe section, and also reduce the pressure of the clamping assembly on the outer wall of the first pipe section, thereby playing a certain protective role for the reducer to be tested.

[0024] In some embodiments, a lining rod is disposed on a side of the second base facing away from the tensile tester, and the lining rod is used for the first pipe segment to be sleeved to fill at least a portion of the first pipe segment.

[0025] In the above technical solution, a liner rod is provided on the second base, and the liner rod can be partially sleeved on the first pipe segment, so that the upper end of the first pipe segment becomes a solid structure after being combined with the liner rod. Compared with the clamping assembly directly clamping the hollow first pipe segment, when the clamping assembly clamps the first pipe segment filled with the liner rod, the clamping positioning is more stable, thereby avoiding the phenomenon of loosening of the first pipe segment from the clamping assembly after the first pipe segment is compressed and deformed.

[0026] In some embodiments, the backing bar comprises a tapered section, and an outer diameter of the tapered section gradually decreases in a direction in which the backing bar moves away from the second base.

[0027] In the above technical solution, by providing the liner rod with a tapered section, the liner rod can also adapt to the sleeve arrangement of first pipe sections of different models, and has strong compatibility and a wider range of applications.

[0028] In some embodiments, the outer wall of the lining rod is provided with anti-slip textures.

[0029] In the above technical solution, by providing anti-skid patterns on the outer wall of the lining rod, the anti-skid patterns can increase the friction between the first pipe section and the lining rod, making it easier for the clamping assembly to clamp and fix the first pipe section, and preventing it from being pulled off.

[0030] In some embodiments, the second base is provided with a connecting seat, and the connecting seat is used to connect with the tensile tester.

[0031] In the above technical solution, by providing the connecting seat on the second base, the connecting seat facilitates the detachable connection between the tensile tester and the pulling unit.

[0032] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a reducer tube tension test device provided in some embodiments of the present application;

[0035] Figure 2 for Figure 1 Front view of the tension test device for the medium reducer;

[0036] Figure 3 for Figure 1 Schematic diagram of the structure of the middle lining rod;

[0037] Figure 4 A schematic diagram of the structure of a reducer tube tension test device provided in other embodiments of the present application;

[0038] Figure 5 for Figure 4 Schematic diagram of the explosion of the medium-diameter reducer tensile test device.

[0039] Icons: 10-positioning unit; 11-first base; 110-first top wall; 111-first side wall; 112-extension portion; 113-connecting hole; 12-positioning groove; 120-first groove side wall; 121-second groove side wall; 122-groove; 20-pulling unit; 21-second base; 210-second top wall; 211-second side wall; 22-locking screw; 23-clamp; 24-lining rod; 241-anti-slip pattern; 25-connecting seat; 100-reducing tube tensile test device; 200-reducing tube; 201-first pipe section; 202-second pipe section. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Example

[0046] The present application embodiment provides a positioning unit for testing a variable diameter pipe, see Figures 1 to 5 The positioning unit 10 includes a first base 11, and the first base 11 has a positioning groove 12 for allowing the first pipe section 201 of the reducer 200 to pass through and blocking the second pipe section 202 thereof to pass through, and the outer diameter of the first pipe section 201 is smaller than the outer diameter of the second pipe section 202; wherein, the first base 11 includes a first groove side wall 120 and a second groove side wall 121, and the first groove side wall 120 and the second groove side wall 121 form an inclined angle to form the positioning groove 12.

[0047] In this solution, a positioning groove 12 is provided on the first base 11, and the positioning groove 12 can allow the first pipe section 201 of the reducer 200 to pass through and block the second pipe section 202 thereof from passing through, so as to position the reducer 200 to be tested, which is beneficial for subsequent tensile testing of the reducer 200 to be tested; and an inclined angle is formed between the first groove side wall 120 and the second groove side wall 121 in the positioning groove 12,

[0048] That is, the opening size of the positioning groove 12 gradually increases along its extension direction, and different positions of the opening on the positioning groove 12 can position different types of reducers 200 to be tested, so that the positioning unit 10 can meet the positioning requirements of a variety of different types of reducers 200, and has stronger compatibility. When dealing with the testing requirements of different types of reducers 200, only one set of positioning units 10 is needed, which has a simple structure, more convenient operation, and higher testing efficiency.

[0049] The first groove sidewall 120 and the second groove sidewall 121 may be planes. Of course, positioning structures may be processed on the first groove sidewall 120 and the second groove sidewall 121. For example, the positioning structures may be grooves 122 or anti-slip patterns.

[0050] For example, see Figure 4 Along the extension direction of the positioning groove 12, a plurality of grooves 122 are formed on the first groove side wall 120 and the second groove side wall 121. By forming a plurality of grooves 122 on the first groove side wall 120 and the second groove side wall 121, compared with the first groove side wall 120 and the second groove side wall 121 being planes, the grooves 122 can contact the outer wall of the first pipe section 201 of the reducer 200 to be measured and play a certain limiting role on the reducer 200 to be measured, thereby reducing the probability of the reducer 200 to be measured moving in the direction in which the opening of the positioning groove 12 becomes larger, and correspondingly improving the positioning effect of the positioning unit 10 on the reducer 200 to be measured.

[0051] The groove 122 may have a variety of shapes, for example, the groove 122 may be triangular, contoured or arc-shaped, etc., depending on the actual situation. In this embodiment, the cross-sectional shape of the reducer 200 to be tested is circular, so the cross-sectional shape of the groove 122 is an arc-shaped groove, and the plurality of grooves 122 are distributed in a wave shape on the first groove sidewall 120 or the second groove sidewall 121.

[0052] In some embodiments, the first base 11 includes a first top wall 110 and two first side walls 111, the positioning groove 12 is located on the first top wall 110, and the tops of the two first side walls 111 are respectively connected to the opposite sides of the first top wall 110 to form a receiving area for receiving the second pipe segment 202. By including the first top wall 110 and the two first side walls 111 in the first base 11, the two first side walls 111 are located on both sides of the first top wall 110, the first side walls 111 provide support for the first top wall 110, and the first base 11 forms a receiving area below the first top wall 110, and the receiving area can accommodate the second pipe segment 202 of the reducer 200 to be tested.

[0053] In some embodiments, see Figure 1The bottom of the first side wall 111 extends to the side away from the first top wall 110 to form an extension portion 112, and the extension portion 112 is provided with a connection hole 113 for the fastener to pass through. By forming the extension portion 112 on one side of the bottom of the first side wall 111, the fastener passes through the connection hole 113 on the extension portion 112 and is fixedly connected to the test bench, so that the first base 11 is firmly fixed.

[0054] The fasteners may be bolts or screws. Figure 1 As shown, the first side wall 111 , the first top wall 110 and the extension portion 112 may be vertically distributed to each other, and the first side wall 111 , the first top wall 110 and the extension portion 112 may be welded and fixed, or may be an integrally formed structure.

[0055] In some embodiments, the connection hole 113 is an elongated hole, and the length direction of the connection hole 113 is arranged in the same direction as the extension direction of the positioning groove 12. Since the contact positions of different types of reducers 200 to be tested and the positioning groove 12 on the first base 11 are different, and the position of the tensile tester is generally relatively fixed, by adopting the connection hole 113 as an elongated hole, when the first base 11 is fixed, the fastener can move along the length direction of the elongated hole, so that the relative position of the first base 11 and the test bench is adjusted, so that the reducer 200 to be tested on the first base 11 can be aligned with the tensile tester, thereby satisfying the positioning of different types of reducers 200 to be tested.

[0056] The present application provides a variable diameter pipe tensile test device, please continue to refer to Figures 1 to 5 The reducer tensile test device 100 includes a pulling unit 20 and the aforementioned positioning unit 10 for reducer testing, wherein the first base 11 in the positioning unit 10 is used to position the reducer 200 to be tested; the pulling unit 20 is used to clamp and cooperate with the first pipe section 201 of the reducer 200 to be tested and apply tension to the reducer 200 to be tested; wherein the positioning groove 12 is V-shaped in a direction perpendicular to the tension direction.

[0057] In this solution, the first base 11 in the positioning unit 10 can position the reducer 200 to be tested, and the pulling unit 20 can clamp the first pipe section 201 extending from the positioning groove 12 on the first base 11, and provide tension to the first pipe section 201 until the reducer connection or intersection of the reducer 200 breaks, and the maximum breaking force is recorded to complete the tension test of the reducer 200 to be tested. In addition, the positioning groove 12 on the first base 11 is V-shaped, that is, the opening size of the positioning groove 12 gradually increases, and different positions of the opening on the positioning groove 12 can position different types of reducers 200 to be tested, so that the positioning unit 10 can meet the positioning requirements of multiple different types of reducers 200, and has stronger compatibility.

[0058] In some embodiments, Figure 1 As shown, the front end of the positioning groove 12 is open. By opening the front end of the positioning groove 12, when the reducer 200 to be measured is clamped and fixed, it is not necessary to pass the reducer 200 to be measured upward from the bottom of the first top wall 110. The reducer 200 to be measured can be directly inserted into the positioning groove 12 from the front end side of the positioning groove 12, which reduces the difficulty of clamping and positioning the reducer 200 to be measured.

[0059] In some embodiments, the pulling unit 20 includes a second base 21 and a clamping assembly, wherein the second base 21 is used to connect to the tension tester, and the second base 21 has a clamping area; the clamping assembly is arranged in the clamping area, and the clamping assembly is used to clamp the first pipe section 201 of the reducer 200 to be tested. By setting the clamping assembly on the second base 21, the clamping assembly can clamp and fix the first pipe section 201 extending into the clamping area, and complete the tension test of the reducer 200 to be tested under the action of the tension tester.

[0060] The clamping assembly may be of various structures. For example, the clamping assembly may be a clamping mechanism such as a clamping cylinder or an electric clamp.

[0061] Optionally, the second base 21 includes a second top wall 210 and two second side walls 211, and the two second side walls 211 are connected to opposite sides of the second top wall 210 to form a clamping area; the clamping assembly includes two locking screws 22, and the two locking screws 22 are respectively arranged on the two second side walls 211 and threadedly matched with the second side walls 211. The two locking screws 22 are located at the abutting ends of the clamping area to clamp the first pipe section 201. The locking screws 22 are threadedly matched with the second side walls 211 of the second base 21, and the two locking screws 22 can be adjusted in telescopic manner by rotating the locking screws 22 in the forward or reverse direction. The clamping assembly has a simple structure, is convenient and quick to operate, and has a low cost.

[0062] Specifically, when the first pipe segment 201 needs to be clamped, the two locking screws 22 are rotated forward so that the two ends of the two clamping screws are respectively in contact with the opposite sides of the first pipe segment 201, thereby completing the clamping and positioning of the first pipe segment 201. After the tensile test is completed, the two locking screws 22 are rotated in the reverse direction so that the end of the locking screw 22 close to the first pipe segment 201 is separated from the first pipe segment 201.

[0063] In some embodiments, a clip 23 is provided at the abutting end of the locking screw 22, and the locking screw 22 abuts against the outer wall of the first pipe segment 201 through the clip 23. By providing the clip 23 at the abutting end of the locking screw 22, the clip 23 can increase the contact area between the locking screw 22 and the first pipe segment 201, reduce the probability of the locking screw 22 and the first pipe segment 201 slipping, and also reduce the pressure of the clamping assembly on the outer wall of the first pipe segment 201, which plays a certain protective role on the reducer 200 to be tested.

[0064] In some embodiments, please combine Figure 1 , Figure 2 and Figure 3 A lining rod 24 is provided on the side of the second base 21 away from the tensile tester. The lining rod 24 is used for the first pipe segment 201 to be sleeved, so as to fill at least a portion of the first pipe segment 201. By providing the lining rod 24 on the second base 21, the lining rod 24 can be partially sleeved on the first pipe segment 201, so that the upper end of the first pipe segment 201 becomes a solid structure after being combined with the lining rod 24. Compared with the clamping assembly directly clamping the hollow first pipe segment 201, when the clamping assembly clamps the first pipe segment 201 filled with the lining rod 24, the clamping positioning stability is higher, so as to avoid the phenomenon that the first pipe segment 201 is loosened from the clamping assembly after being compressed and deformed.

[0065] In some embodiments, the liner rod 24 includes a tapered section, and the outer diameter of the tapered section gradually decreases in the direction in which the liner rod 24 is away from the second base 21. By providing the tapered section in the liner rod 24, the liner rod 24 can also be adapted to be mounted on the first pipe section 201 of different models, with strong compatibility and a wider range of applications.

[0066] In some embodiments, see Figure 3 The outer wall of the lining rod 24 is provided with anti-skid patterns 241. By providing the anti-skid patterns 241 on the outer wall of the lining rod 24, the anti-skid patterns 241 can increase the friction between the first pipe section 201 and the lining rod 24, making it easier for the clamping assembly to clamp and fix the first pipe section 201, and it is not easy to be pulled off.

[0067] In some embodiments, the second base 21 is provided with a connection seat 25, and the connection seat 25 is used to connect with a tensile tester (not shown in the figure). Through the arrangement of the connection seat 25 on the second base 21, the connection seat 25 facilitates the detachable connection between the tensile tester and the pulling unit 20.

[0068] The reducer tension test device 100 is at least applicable to the fields of catheter tension test and adhesive relay test involving the interventional part of the delivery system surgical instrument, such as the mitral valve and the tricuspid valve. The specific method of using the reducer tension test device 100 is as follows: adjust the position of the first base 11 on the test base so that the positioning groove 12 is most suitable for the reducer 200 and the center of the second base 21; lock the fasteners on the extension 112 to fix the first base 11; the first pipe section 201 of the reducer 200 is partially sleeved on the liner rod 24, so that the two locking screws 22 of the clamping assembly clamp the first pipe section 201; start the tension tester and stretch until the reducer 200 breaks at the reducer connection or junction, and the equipment records the maximum breaking force, completing the tension test of the reducer 200.

[0069] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0070] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning unit for testing a reducer, characterized in that: include: A first base having a positioning groove for allowing a first pipe section of the reducer to pass through and blocking a second pipe section thereof from passing through, wherein the outer diameter of the first pipe section is smaller than the outer diameter of the second pipe section; Wherein, the first base comprises a first groove side wall and a second groove side wall, and the first groove side wall and the second groove side wall form an inclined angle to form the positioning groove.

2. The positioning unit for reducing pipe testing according to claim 1, characterized in that: Along the extending direction of the positioning groove, a plurality of grooves are formed on the first groove side wall and the second groove side wall.

3. The positioning unit for reducing pipe testing according to claim 1, characterized in that: The first base includes a first top wall and two first side walls, the positioning groove is located on the first top wall, and the tops of the two first side walls are respectively connected to opposite sides of the first top wall to form an accommodating area for accommodating the second pipe section.

4. The positioning unit for reducing pipe testing according to claim 3, characterized in that: An extension portion is formed by extending the bottom of the first side wall toward a side away from the first top wall, and the extension portion is provided with a connection hole for a fastener to pass through.

5. The positioning unit for reducing pipe testing according to claim 4, characterized in that: The connecting hole is a long strip-shaped hole, and the length direction of the connecting hole is arranged in the same direction as the extending direction of the positioning groove.

6. A reducer tube tension test device, characterized in that: It comprises a pulling unit and a positioning unit for testing a reducer according to any one of claims 1 to 5, wherein the first base in the positioning unit is used to position the reducer to be tested; The pulling unit is used to clamp and cooperate with the first pipe section of the reducer to be tested and apply a pulling force to the reducer to be tested; wherein the positioning groove is V-shaped in a direction perpendicular to the pulling force.

7. The reducer tensile testing device according to claim 6, characterized in that: The front end of the positioning groove is open.

8. The reducer tensile testing device according to claim 6, characterized in that: The pulling unit comprises: A second base, used to connect to the tensile tester, the second base having a clamping area; A clamping assembly is arranged in the clamping area, and the clamping assembly is used to clamp the first pipe section of the reducer to be tested.

9. The reducer tensile testing device according to claim 8, characterized in that: The second base comprises a second top wall and two second side walls, wherein the two second side walls are connected to opposite sides of the second top wall to form the clamping area; The clamping assembly includes two locking screws, which are respectively arranged on the two second side walls and threadedly matched with the second side walls. The two locking screws are located at the abutting ends of the clamping area to cooperate with each other to clamp the first pipe section.

10. The reducer tensile testing device according to claim 9, characterized in that: The abutting end of the locking screw is provided with a clip, and the locking screw is abutted against the outer wall of the first pipe section through the clip.

11. The reducer tensile testing device according to claim 8, characterized in that: A lining rod is provided on a side of the second base facing away from the tensile tester, and the lining rod is used for the first pipe section to be sleeved thereon to fill at least a portion of the first pipe section.

12. The reducer tensile testing device according to claim 11, characterized in that: The backing rod comprises a tapered section, and an outer diameter of the tapered section gradually decreases along a direction in which the backing rod moves away from the second base.

13. The reducer tensile testing device according to claim 11, characterized in that: The outer wall of the lining rod is provided with anti-skid patterns.

14. The reducer tensile testing device according to claim 8, characterized in that: The second base is provided with a connecting seat, and the connecting seat is used to connect with a tensile tester.

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