CN212586227U

CN212586227U - Outer layer stretching and stripping testing device and testing system

Info

Publication number: CN212586227U
Application number: CN202022082946.0U
Authority: CN
Inventors: 吴文栋; 郑佩根; 李智; 丁金森; 涂欣; 陆兵; 辛明亮
Original assignee: Guangzhou Special Pressure Equipment Inspection and Research Institute
Current assignee: Guangzhou Special Equipment Testing And Research Institute Guangzhou Special Equipment Accident Investigation Technology Center Guangzhou Elevator Safety Operation Monitoring Center
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-02-23
Anticipated expiration: 2030-09-21

Abstract

The utility model discloses an outer tensile testing arrangement and test system of peeling off, outer tensile testing arrangement of peeling off includes support body, locating part and setting element, and on the rotatable support body of locating part, the locating part was used for wearing to establish and waits to test the piece, and on the setting element is portable to be located the locating part, the setting element was removed along the direction that is close to or keeps away from the locating part. According to the outer layer tensile stripping testing device, the limiting piece can rotate, when the stripped outer layer skin is pulled towards any direction, the to-be-tested piece can rotate until the stripped outer layer skin and the axis line of the to-be-tested piece are positioned on the same plane, the to-be-tested piece stops rotating, the stripped outer layer skin can meet the testing requirement of being perpendicular to the outer circumference of the to-be-tested piece, and along with the pulling, the stripped outer layer skin can be continuously perpendicular to the outer circumference of the to-be-tested piece, the problem that the stripping angle is out of control in the testing process is avoided, the precision of the stripping strength testing can be improved, and the requirement for testing the stripping strength with high precision and high efficiency.

Description

Outer layer stretching and stripping testing device and testing system

Technical Field

The utility model relates to a material test equipment technical field especially relates to an outer tensile testing arrangement and test system of peeling off.

Background

According to the test requirements of polyethylene anticorrosive coating for buried steel pipeline (GB/T23257-2017) on the peeling strength of the anticorrosive coating, the test temperature of the test environment is normal temperature and high temperature, the sample size is 57-600 mm of pipe diameter, the pipe length is 150-300 mm, the width of the tensile peeled anticorrosive coating is about 20mm, the length is at least 160mm, the tensile rate is 10mm/min, the tensile anticorrosive coating is perpendicular to the circumferential surface of the anticorrosive pipe and is peeled at constant speed, the peeling length is about 140mm, and a testing machine records a time-force value curve.

The current common test modes are a common tension meter, a rotary tensile stripping tester, a tensile testing machine and the like.

The common tension meter manually fixes the anti-corrosion pipe or the pipe slice, and manually controls the stretching angle and the stretching speed of the tension meter and a test piece, so that the method has the advantages of low testing cost, suitability for field operation of skilled operators, unsuitability for high-temperature testing environment, high operation difficulty, extremely difficult guarantee of angle and speed, and very low reliability of a testing result.

The rotation type tensile stripping tester fixes the tester on the anti-corrosion pipe, the tester is provided with a clamp for clamping the anti-corrosion layer strip, and the tester is rotated and the tensile angle is kept perpendicular to the anti-corrosion pipe, so that the purpose of testing is achieved. The device is suitable for field operation of overhead large-sized long-distance pipelines with larger pipe diameters, but is difficult to be suitable for testing of small pipe diameters, non-overhead pipelines and laboratories, the stretching speed is difficult to control, the manual influence is large, the automation degree is low, the equipment cost is high and generally is more than 30 thousands, and the device cannot be applied to testing under the high-temperature condition.

Compared with the two types of test equipment, the tensile testing machine has enough force value control and tensile rate control precision, has the function of automatically recording a time-force value curve, is an ideal test tool, but is lack of a special tensile stripping clamp at present, and cannot meet the test requirement that a stripped anticorrosive coating is perpendicular to the outer circumference of a test piece by adopting a conventional cable chain type fixed anticorrosive pipe or slice.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model discloses lie in overcoming prior art's defect, provide one kind and can satisfy the outer tensile testing arrangement and the test system of peeling off of test requirement.

The technical scheme is as follows:

an outer layer tensile peel test apparatus comprising:

a frame body;

the limiting piece is rotatably arranged on the frame body and is used for penetrating through a piece to be tested; and

the locating element, the setting element is portable to be located on the locating part, the setting element is along being close to or keeping away from the direction removal of locating part.

The outer layer tensile stripping test device is provided with a to-be-tested piece in a penetrating way through a limiting piece, the to-be-tested piece is limited, meanwhile, the positioning piece is moved in the direction close to the limiting piece, so that the positioning piece can abut against the to-be-tested piece, if part of the outer layer skin is stripped on the to-be-tested piece, and the stripped outer layer skin is pulled, the to-be-tested piece can be continuously stripped, because the limiting piece can rotate, when the stripped outer layer skin is pulled in any direction, the to-be-tested piece can rotate until the stripped outer layer skin and the axial lead of the to-be-tested piece are positioned on the same plane, namely the stripped outer layer skin is vertical to the outer circumference of the to-be-tested piece, the to-be-tested piece stops rotating, at the moment, the stripped outer layer skin meets the test requirement vertical to the outer circumference of the to-be-tested piece, the good matching performance is, the problem that the peeling angle is out of control in the testing process is avoided, the peeling strength testing precision can be improved, and the requirement for high-precision and high-efficiency determination of the peeling strength is met.

In one embodiment, the limiting member includes a core shaft and two fixing clamps, the core shaft is rotatably disposed on the frame body, the core shaft is used for penetrating a test piece to be tested, the fixing clamps are disposed on the core shaft, the positioning member is movably disposed on the fixing clamps, the number of the fixing clamps is two, and the two fixing clamps are arranged at intervals.

In one embodiment, the outer edge of the fixing clip is turned to one side to form an adjusting part, the adjusting part is coaxially arranged around the mandrel, and the positioning part is movably arranged on the adjusting part.

In one embodiment, the number of the positioning pieces on the fixing clip is at least three, and the positioning pieces are arranged on the adjusting part at intervals along the circumferential direction of the fixing clip.

In one embodiment, the positioning member is in threaded engagement with the adjusting portion for telescopic movement in and out.

In one embodiment, the positioning member is disposed along a radial direction of the mandrel.

In one embodiment, the retaining clip is a sliding fit with the mandrel.

In one embodiment, the support body includes an arch support and a connecting piece, the arch support includes a first side piece, an intermediate piece and a second side piece, the first side piece and the second side piece are arranged at an interval, the first side piece and the second side piece are arranged at an included angle with the intermediate piece, the first side piece and the second side piece are arranged at two sides of the intermediate piece, and the intermediate piece is far away from one side of the limiting piece and is provided with the connecting piece.

In one embodiment, the outer layer tensile peeling test device further includes a bearing, the first side member and the second side member are respectively provided with a mounting hole, the bearing is fixed in the mounting hole, the bearing sleeve is disposed outside the limiting member, the mandrel can freely pass through and be fixed and taken out of the bearing, and the centers of the arched bracket, the connecting member, the bearing, the mandrel and the fixing clamp are located in the same plane.

A test system comprises a first tensile piece, a second tensile piece and the outer layer tensile peeling test device, wherein the first tensile piece is connected with the frame body, a to-be-tested piece can be coaxially and concentrically fixed on the mandrel with the mandrel and freely moves in a circular mode, the second tensile piece is used for being connected with the outer layer of the to-be-tested piece, and the second tensile piece and the first tensile piece can be far away from each other.

The test system is characterized in that a to-be-tested piece is arranged through a limiting piece in a penetrating mode, the to-be-tested piece is limited, the positioning piece moves along the direction close to the limiting piece, the to-be-tested piece is fixed on the positioning piece and keeps the same axis with the rotating mandrel, the first stretching piece can be used for being connected with the frame body, the second stretching piece is connected with the outer layer of the to-be-tested piece, the outer layer is enabled to be overlapped with the axis surface of the to-be-tested piece, when the first stretching piece and the second stretching piece move relatively, the outer layer of the to-be-tested piece is pulled and peeled in the vertical direction relative to the circumferential surface of the to-be-tested piece, the test requirement that the outer circumference of the to-be-tested piece is peeled in the vertical direction is met, the required tensile peeling length is met all the time, the good matching performance with the conventional tensile test is achieved, the test system is suitable, the precision of the peel strength test can be improved, and the requirement of high-precision and high-efficiency determination of the peel strength is met.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a cross-sectional view of an outer layer tensile peel test apparatus according to an embodiment of the present invention;

fig. 2 is an assembly diagram of the fixing clip and the positioning member according to the embodiment of the present invention.

Description of reference numerals:

100. the frame body 110, the first side piece 120, the middle piece 130, the second side piece 140, the connecting piece 200, the limiting piece 210, the mandrel 220, the fixing clamp 221, the adjusting part 300, the positioning piece 400, the flat key 500 and the bearing.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 and fig. 2, an embodiment discloses an outer layer tensile peeling test device, which includes a frame body 100, a limiting member 200 and a positioning member 300, wherein the limiting member 200 is rotatably disposed on the frame body 100, the limiting member 200 is used for penetrating a test piece to be tested, the positioning member 300 is movably disposed on the limiting member 200, and the positioning member 300 moves along a direction close to or away from the limiting member 200.

The outer layer tensile stripping test device is characterized in that a to-be-tested piece is arranged in a penetrating manner through the limiting piece 200 to limit the to-be-tested piece, the positioning piece 300 is moved in a direction close to the limiting piece 200, so that the positioning piece 300 can abut against the to-be-tested piece, if part of the outer layer skin is stripped on the to-be-tested piece and the stripped outer layer skin is pulled, the un-stripped outer layer skin can be continuously stripped off the to-be-tested piece, because the limiting piece 200 can rotate, when the stripped outer layer skin is pulled in any direction, the to-be-tested piece can rotate until the stripped outer layer skin and the axial lead of the to-be-tested piece are positioned on the same plane, namely the stripped outer layer skin is perpendicular to the outer circumference of the to-be-tested piece, the to-be-tested piece stops rotating, at the moment, the stripped outer layer skin meets the test requirement perpendicular to the outer circumference of the to-be-tested, the problem that the peeling angle is out of control in the testing process is avoided, the peeling strength testing precision can be improved, and the requirement for high-precision and high-efficiency determination of the peeling strength is met.

In this embodiment, the outer skin of the test piece is the outermost anticorrosive coating of the anticorrosive pipe. In other implementations, the testers may also be other tubular wires, such as cables, and the outer skin of the room to be tested is the outermost structure of the cable.

Optionally, the limiting member 200 is detachably connected to the frame 100. The to-be-tested member can be sleeved outside the limiting member 200, and then the limiting member 200 is assembled on the frame body 100, so that the test is convenient.

In one embodiment, as shown in fig. 1 and fig. 2, the limiting member 200 includes a core shaft 210 and two fixing clips 220, the core shaft 210 is rotatably disposed on the frame body 100, the core shaft 210 is used for penetrating a test piece to be tested, the fixing clips 220 are disposed on the core shaft 210, the positioning member 300 is movably disposed on the fixing clips 220, the number of the fixing clips 220 is two, and the two fixing clips 220 are disposed at an interval. The core shaft 210 penetrates through the to-be-tested piece, the two fixing clamps 220 are respectively sleeved at the two ends of the core shaft 210, the two fixing clamps 220 can axially limit the to-be-tested piece, then the positioning pieces 300 on the two fixing clamps 220 can radially limit the to-be-tested piece, the to-be-tested piece can be kept stable, displacement can not occur during testing, meanwhile, the fixing effect of the positioning pieces 300 on the two fixing clamps 220 on the to-be-tested piece is better, it is guaranteed that the to-be-tested piece can not rotate relative to the core shaft 210, the positioning pieces 300 on the two fixing clamps 220 can respectively adjust the positions of the two ends of the to-be-tested piece, and further.

The "axial direction" and the "radial direction" are axial and radial directions of the mandrel 210.

In one embodiment, as shown in fig. 1 and fig. 2, the outer edge of the fixing clip 220 is folded to one side to form an adjusting portion 221, the adjusting portion 221 is coaxially disposed around the mandrel 210, and the positioning element 300 is movably disposed on the adjusting portion 221. The to-be-tested piece can extend between the adjusting part 221 and the mandrel 210, and the adjusting part 221 can surround the to-be-tested piece, so that the positioning part 300 can be favorably abutted against the to-be-tested piece in a vertical or approximately vertical mode, and the fixing effect of the to-be-tested piece is better.

In one embodiment, as shown in fig. 1 and fig. 2, the number of the positioning elements 300 on the limiting element 200 is at least three, and the positioning elements 300 are circumferentially spaced on the limiting element 200 along the fixing clip 220. In the structure, the positioning piece 300 can fix the piece to be tested from different sides, the fixing effect is better, the position of the piece to be tested can be adjusted by adjusting the displacement distance of different positioning pieces 300, even if the pipe diameter of the piece to be tested is in clearance fit with the limiting piece 200, the rotation center shaft of the piece to be tested can be coaxial with the rotation center shaft of the limiting piece 200, the test error caused by the rotation center shaft of the piece to be tested and the rotation center shaft of the limiting piece 200 in different axes can be reduced, and the test precision of the peeling strength is further improved.

Optionally, as shown in fig. 2, the number of the positioning elements 300 is three, the three positioning elements 300 are uniformly arranged at intervals along the circumferential direction of the limiting element 200, at this time, the three positioning elements 300 can better fix the limiting element 200, and simultaneously, the position of the test piece to be tested can be more accurately adjusted through the position adjustment of the three positioning elements 300, so that the rotation central axis of the test piece to be tested is coaxial with the rotation central axis of the limiting element 200.

Specifically, the moving direction of each positioning element 300 intersects with the rotation center axis of the limiting element 200 at the same point, and the adjustment of the positioning element 300 does not cause the deflection of the limiting element 200, thereby preventing the rotation center axis of the to-be-tested element from being not coaxial with the rotation center axis of the limiting element 200 after the adjustment.

In one embodiment, the positioning member 300 is screwed with the adjusting portion 221 to move in and out in a telescopic manner. The positioning member 300 can be extended or retracted relative to the adjusting portion 221 by rotating the positioning member 300, so as to fix the testing object or adjust the position of the testing object.

In other embodiments, the limiting member 200 further includes an auxiliary member, the adjusting portion 221 is provided with a through hole for the positioning member 300 to slide through, the adjusting portion 221 is further provided with a fastening hole communicated with the through hole, the auxiliary member is in threaded fit with the fastening hole, the positioning member 300 can adjust the distance passing through the through hole, and the auxiliary member penetrates through the fastening hole to enable the auxiliary member to abut against the side surface of the positioning member 300, and the positioning member 300 can also be used to adjust the position of the to-be-tested member and fix the to-be-tested member.

In one embodiment, as shown in fig. 2, the positioning member 300 is disposed along a radial direction of the mandrel 210. At this time, the positioning member 300 can move in a direction perpendicular to the outer circumference of the mandrel 210, and when the to-be-tested piece is fixed and the position of the to-be-tested piece is adjusted, the to-be-tested piece can be adjusted in a posture parallel to the central axis of the mandrel 210, so that the to-be-tested piece can be ensured to be coaxially arranged with the mandrel 210, and the accuracy of the peel strength test is improved.

In one embodiment, the retaining clip 220 is a sliding fit with the mandrel 210. At this time, the position of the fixing clip 220 on the mandrel 210 is adjusted so as to be suitable for the to-be-tested pieces with different lengths, and the application range is improved.

Optionally, as shown in fig. 1 and fig. 2, the outer layer tensile peeling test apparatus further includes a flat key 400, a key groove for mounting the flat key 400 is formed on the outer side of the mandrel 210, the thickness of the flat key 400 is greater than the depth of the key groove, a mating groove is formed on the inner wall of the fixing clip 220, and the key groove extends along the axial direction of the mandrel 210; or a plurality of keyways are arranged at intervals along the axial direction of the mandrel 210. When the key slot extends along the axial direction of the mandrel 210, the flat key 400 can be placed at different positions of the key slot on the mandrel 210, and then the fixing clamp 220 is sleeved outside the mandrel 210, and the part of the flat key 400 exposed out of the key slot is clamped with the matching slot; when the keyway is a plurality of, when the keyway sets up along the axial interval of dabber 210, can place flat key 400 in different keyways, locate dabber 210 outside and assemble with flat key 400 with fixation clamp 220 cover, all can realize the position adjustment of fixation clamp 220 on dabber 210.

In other embodiments, the mandrel 210 is externally provided with an external thread, and the fixing clip 220 is provided with an adjusting hole at the middle part thereof, wherein the adjusting hole is in threaded fit with the external thread. The position of the retaining clip 220 on the mandrel 210 can now be adjusted by rotating the retaining clip 220.

In other embodiments, the outer side surface of the mandrel 210 is provided with a plurality of slots along the axial direction, the fixing clip 220 is provided with through holes, the rod piece can penetrate through the through holes and be inserted into the slots, the position of the fixing clip 220 on the mandrel 210 is fixed, and meanwhile, the through holes correspond to different slots, so that the position of the fixing clip 220 on the mandrel 210 can be adjusted.

In one embodiment, as shown in fig. 1, the frame body 100 includes an arched support and a connecting member, the arched support includes a first side member 110, a middle member 120 and a second side member 130, the first side member 110 and the second side member 130 are disposed at intervals, the first side member 110 and the second side member 130 are disposed at an included angle with the middle member 120, the first side member 110 and the second side member 130 are disposed at two sides of the middle member 120, and the connecting member 140 is disposed at one side of the middle member 120 away from the limiting member 200. The arched support has a simple and stable structure, and cannot be easily deformed, and the connecting piece 140 can be used for externally-connected stretching equipment.

Specifically, the first side member 110 and the second side member 130 are provided with mounting holes. For mounting the bearing 500.

Optionally, the connecting member 140 is detachably connected to the middle member 120, so that the connecting member 140 can be replaced according to different testing requirements. Specifically, the connecting member 140 is screw-coupled to the intermediate member 120, and a latch hole is formed in the connecting member 140. The frame body 100 can be pulled in a certain direction by passing the rod through the latch hole and pulling both ends of the rod. In other embodiments, the connecting member 140 may also be hook-shaped.

In one embodiment, as shown in fig. 1 and fig. 2, the outer layer tensile peeling test apparatus further includes a bearing 500, the first side member 110 and the second side member 130 are provided with mounting holes, the bearing 500 is fixed in the mounting holes, the bearing 500 is sleeved outside the limiting member 200, the bearing 500 can freely pass through and be fixed and taken out of the bearing 500, and the centers of gravity of the arched bracket, the connecting member 140, the bearing 500, the mandrel 210 and the fixing clip 220 are located in the same plane. The rotation of the limiting member 200 can be facilitated through the bearing 500, and the stripped outer layer of the test piece to be tested can be perpendicular to the outer circumferential surface of the test piece to be tested during testing, so that a more accurate test result can be obtained.

When assembling the outer layer tensile peeling test apparatus, as shown in fig. 1, the fixing clip 220 is fixed at two ends of the to-be-tested piece, the to-be-tested piece is concentric with the fixing clip 220 by adjusting the positioning member 300, and then the mandrel 210 sequentially penetrates through the bearing 500 on the first side piece 110, the fixing member 220, and the bearing 500 on the second side piece 120 of the arch support and is fixed.

An embodiment discloses a testing system, including first tensile piece, second tensile piece and as above any said outer layer tensile peeling test device, the first tensile piece is connected with the support body 100, and the to-be-tested piece can be with dabber 210 concentric fixed and freely circular motion on dabber 210, the second tensile piece is used for being connected with the outer layer of to-be-tested piece, the second tensile piece with the first tensile piece can keep away from each other.

In the test system, the to-be-tested piece is penetrated through the limiting piece 200 to limit the to-be-tested piece, the positioning piece 300 is moved along the direction close to the limiting piece 200, the to-be-tested piece is fixed on the positioning piece 300 and keeps coaxial with the rotating mandrel 210, the first stretching piece can be connected with the frame body 100, the second stretching piece is connected with the outer layer of the to-be-tested piece, the outer layer is ensured to be superposed with the axial center plane of the to-be-tested piece, when the first stretching piece and the second stretching piece move relatively, the outer layer of the to-be-tested piece is pulled and peeled in the vertical direction relative to the circumferential surface of the to-be-tested piece, the test requirement that the peeled outer layer is perpendicular to the outer circumference of the to-be-tested piece is met all the time, the required stretching peeling length is reached, the matching performance with the conventional stretching test is good, the problems of manual intervention and incontrollable peeling angle in the test process are avoided, the peeling strength test precision can be improved, and the requirement for high-precision and high-efficiency determination of the peeling strength is met.

Optionally, the first tensile member and the second tensile member are two clamping ends of the tensile testing machine, wherein the second tensile member is a wedge-shaped clamp, which can improve the clamping force along with the increase of the load and prevent the outer skin of the piece to be tested from falling off.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. An outer layer tensile peel test device, comprising:

a frame body;

2. The outer layer tensile peeling test device according to claim 1, wherein the limiting member comprises a mandrel and two fixing clamps, the mandrel is rotatably arranged on the frame body, the mandrel is used for penetrating a piece to be tested, the fixing clamps are arranged on the mandrel, the positioning member is movably arranged on the fixing clamps, the number of the fixing clamps is two, and the two fixing clamps are arranged at intervals.

3. The outer layer tensile peel test apparatus of claim 2, wherein the outer edge of the fixing clip is folded to one side to form an adjusting portion, the adjusting portion is coaxially disposed around the mandrel, and the positioning member is movably disposed on the adjusting portion.

4. The outer layer tensile peel test apparatus according to claim 3, wherein the number of the positioning members on the fixing clip is at least three, and the positioning members are provided on the adjusting portion at intervals in a circumferential direction of the fixing clip.

5. The outer layer tensile peel test apparatus of claim 4, wherein the positioning member is in threaded engagement with the adjusting portion for inward and outward telescopic movement.

6. The outer layer tensile peel test apparatus of claim 5, wherein the positioning member is disposed in a radial direction of the mandrel.

7. The outer layer tensile peel test apparatus of claim 3 wherein the retaining clip is in sliding engagement with the mandrel.

8. The outer layer tensile peeling test device of claim 2, wherein the frame body comprises an arched support and a connecting piece, the arched support comprises a first side piece, an intermediate piece and a second side piece, the first side piece and the second side piece are arranged at intervals, the first side piece and the second side piece are arranged at included angles with the intermediate piece, the first side piece and the second side piece are arranged on two sides of the intermediate piece, and the connecting piece is arranged on one side of the intermediate piece away from the limiting piece.

9. The outer layer tensile peeling test device of claim 8, further comprising a bearing, wherein the first side member and the second side member are provided with mounting holes, the bearing is fixed in the mounting holes, the bearing sleeve is disposed outside the limiting member, the mandrel can freely pass through and be fixed and taken out of the bearing, and the centers of the arched bracket, the connecting member, the bearing, the mandrel and the fixing clip are located in the same plane.

10. A test system comprising a first tensile member, a second tensile member and the outer layer tensile peeling test apparatus as set forth in any one of claims 2 to 9, wherein the first tensile member is connected to the frame body, and the member to be tested is fixed to the core shaft coaxially with the core shaft and is free to move circularly, the second tensile member is used for connecting to the outer layer of the member to be tested, and the second tensile member and the first tensile member are distant from each other.