D-Ring Tensile Test Tool

Abstract

The present invention discloses a tooling for a tensile test of a D-shaped ring, comprising a positioning part, a connecting part and a fixing part, wherein the positioning part and the connecting part are detachably fixedly connected and used for fixing the D-shaped ring, wherein the connecting part is fixedly connected to the fixing part, and wherein the fixing part is fixedly connected to the corresponding position of a tensile testing machine. In the present invention, the two sections of the D-shaped ring are fixed by the cooperation of the connecting part and the positioning part, and the end of the tail tensile rod and the arc-shaped side wall of the connecting part are an integrally formed structure, and the tail tensile rod is fixedly installed in the clamp of the tensile testing machine, and the tail tensile rod is applied with pressure by the tensile testing machine. After the D-shaped ring is welded and processed into a specimen, it can be directly clamped on the testing machine, so that the test can be carried out smoothly, and a special clamping device is used to realize a tensile test on a D-shaped ring or a pipe ring with a relatively low investment, and the test operation is convenient, the device is simple to load and unload, and the test results are accurate and stable.

Description

Technical Field

[0001] The invention relates to the field of D-ring stretching test equipment, in particular to a tooling for a D-ring stretching test. Background Art

[0002] Before D-rings are put into storage, they need to be subjected to a breaking test to ensure that they can withstand the corresponding load-bearing capacity to ensure their safety and quality.

[0003] However, after the D-ring is welded and processed into a specimen, it cannot be directly clamped on the testing machine, resulting in the inability to conduct the test normally. Therefore, it is necessary to design a tensile test fixture for the D-ring. Summary of the invention

[0004] The purpose of the present invention is to provide a tool for D-ring tensile testing to solve the problem that the D-ring cannot be directly clamped on a testing machine after being welded into a sample.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The tooling for D-ring tensile test includes a positioning part, a connecting part and a fixing part.

[0007] Wherein, the positioning part and the connecting part are detachably fixedly connected, and are used for fixing the D-shaped ring;

[0008] The connecting portion is fixedly connected to the fixing portion, and the fixing portion is fixedly connected to a corresponding position of the tensile testing machine.

[0009] Furthermore, the positioning portion includes a positioning pin, which is an L-shaped structure. The assembly end of the positioning pin is provided with an external thread, and the end of the positioning pin close to the external thread is provided with a through hole, and the through hole cooperates with the pin.

[0010] Furthermore, the connecting part is a U-shaped structure, and a through hole and a threaded hole are respectively provided near both ends of the connecting part, and the positioning pin passes through the through hole and is threadedly connected with the threaded hole to fix the positioning part and the connecting part.

[0011] Furthermore, the fixing part includes a tail stretching rod, the tail stretching rod and the connecting part are an integrally formed structure, the tail stretching rod is fixedly connected to a corresponding position of the tensile testing machine, and the D-shaped ring is inserted through a U-shaped notch of the connecting part.

[0012] Furthermore, a protection portion is fixedly connected to the side wall of the connecting portion, and the protection portion and the positioning portion are detachably fixedly connected to fix the positioning pin.

[0013] Furthermore, the protective part includes a T-shaped protective frame, a cavity is provided on the inner side of the protective frame, strip slide grooves are provided on the inner walls on both sides of the opposite sides of the protective frame, a movable plate is provided between the two strip slide grooves, universal wheels are fixedly connected to the outer walls on both sides of the opposite sides of the movable plate, the treads of the two universal wheels are always in contact with the corresponding inner walls of the strip slide grooves, a limit plate is vertically provided on the inner side of the protective frame, a sliding rod is fixedly connected on the side of the movable plate close to the limit plate, the sliding rod passes through the limit plate, a telescopic spring is provided between the movable plate and the limit plate, a first fixing ring is fixedly connected on the side of the sliding rod away from the movable plate, a PU rope is detachably fixedly connected to the first fixing ring, a plurality of wire rollers are provided on the inner wall of the protective frame, the PU rope passes through the side walls of the protective frame through the wire rollers and the ends are fixedly connected to the auxiliary connecting part.

[0014] Furthermore, the auxiliary connecting part includes a second fixing ring, a placement groove is opened on the side wall of the positioning pin, the placement groove is a concave structure, the second fixing ring is fixedly connected to the inner side of the placement groove, and the terminal end of the PU rope is detachably fixedly connected to the second fixing ring.

[0015] Furthermore, the sliding rod is slidably connected to the limiting plate, one end of the telescopic spring is fixedly connected to the movable plate, and the other end of the telescopic spring is fixedly connected to the limiting plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the two sections of the D-shaped ring are fixed by the cooperation of the connecting part and the positioning part, and the end of the tail stretching rod and the arc-shaped side wall of the connecting part are an integrally formed structure, and the tail stretching rod is fixedly installed in the clamp of the tensile testing machine. The tensile testing machine applies pressure to the tail stretching rod, and the D-shaped ring can be directly clamped on the testing machine after being welded and processed into a sample, so that the test can be carried out smoothly. The tensile test of the D-shaped ring or the pipe ring can be realized with a low investment through a special clamping device, the test operation is convenient, the device is simple to load and unload, and the test results are accurate and stable.

[0018] 2. In the present invention, the movable plate and the limit plate are elastically connected by the telescopic spring. When the locating pin breaks and falls, the movable plate will slide inside the protective frame, thereby squeezing the telescopic spring. The telescopic spring plays a buffering role through its elasticity, which can effectively buffer the impact force generated when the locating pin falls. The PU rope can limit the swing range of the locating pin to avoid injuries to surrounding observers when the locating pin breaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall main structure of the present invention;

[0020] Figure 2It is a schematic diagram of the overall top view structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the overall front and cross-sectional structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the main cross-sectional structure of the protection part of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the fixed connection state of the protection part and the auxiliary connection part of the present invention;

[0024] Figure 6 for Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0025] Figure 7 for Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0026] Figure 8 for Figure 5 Schematic diagram of the partial enlarged structure at point C in the middle.

[0027] In the figure: 10, D-ring; 20, positioning pin; 21, through hole; 22, pin; 30, connecting part; 31, through hole; 32, threaded hole; 40, tail stretching rod; 50, protection frame; 51, strip slide; 52, moving plate; 53, universal wheel; 54, limit plate; 55, slide bar; 56, telescopic spring; 57, first fixing ring; 58, PU rope; 59, wire roller; 60, second fixing ring; 61, placement groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-8 , the present invention provides a technical solution:

[0030] A D-ring tensile test fixture, comprising a tensile fixture including a positioning portion, a connecting portion 30 and a fixing portion;

[0031] The positioning portion and the connecting portion 30 are detachably fixedly connected, and are used for fixing the D-shaped ring 10;

[0032] The connecting portion 30 is fixedly connected to the fixing portion, and the fixing portion is fixedly connected to a corresponding position of the tensile testing machine.

[0033] The positioning part includes a positioning pin 20 , which is an L-shaped structure. The assembly end of the positioning pin 20 is provided with an external thread. The end of the positioning pin 20 close to the external thread is provided with a through hole 21 , and the through hole 21 cooperates with the pin 22 .

[0034] The inner diameter of the through hole 21 is larger than the outer diameter of the pin 22 , so that the pin 22 can pass through the through hole easily, and threaded sleeves are threadedly connected on both sides of the pin 22 .

[0035] The connecting portion 30 is a U-shaped structure, and a through hole 31 and a threaded hole 32 are respectively provided near both ends of the connecting portion 30 . The positioning pin 20 passes through the through hole 31 and is threadedly connected with the threaded hole 32 to fix the positioning portion and the connecting portion 30 .

[0036] The fixing part includes a tail stretching rod 40 , which is an integrally formed structure with the connecting part 30 . The tail stretching rod 40 is fixedly connected to a corresponding position of the tensile testing machine, and the D-shaped ring 10 is inserted through the U-shaped notch of the connecting part 30 .

[0037] Among them, a protective part is fixedly connected to the side wall of the connecting part 30 by means of bolts, and the protective part and the positioning part are detachably fixedly connected to fix the positioning pin 20.

[0038] When in use, first insert the D-ring 10 through the U-shaped notch of the connecting portion 30, then pass the positioning pin 20 through the through hole 31 and threadedly connect it with the threaded hole 32, so that the positioning pin 20 is fixed through the threaded hole 32 and the connecting portion 30, and after the fixing is completed, the tail stretching rod 40 and the chuck in the tensile testing machine are threadedly connected, and pressure is applied to the tail stretching rod 40 through the tensile testing machine. After the D-ring 10 is welded and processed into a specimen, it can be directly clamped on the testing machine.

[0039] Among them, the protection part includes a T-shaped protection frame 50, a cavity is arranged on the inner side of the protection frame 50, strip slide grooves 51 are provided on the inner walls on both sides of the opposite sides of the protection frame 50, a moving plate 52 is arranged between the two strip slide grooves 51, and universal wheels 53 are fixedly connected to the outer walls on both sides of the opposite sides of the moving plate 52, and the treads of the two universal wheels 53 are always in contact with the inner walls of the corresponding strip slide grooves 51, a limiting plate 54 is vertically arranged on the inner side of the protection frame 50, a sliding rod 55 is fixedly connected on the side of the moving plate 52 close to the limiting plate 54, the sliding rod 55 passes through the limiting plate 54, a telescopic spring 56 is arranged between the moving plate 52 and the limiting plate 54, a first fixing ring 57 is fixedly connected on the side of the sliding rod 55 away from the moving plate 52, and a PU rope 58 is detachably fixedly connected to the first fixing ring 57, and a plurality of wire rollers 59 are arranged on the inner wall of the protection frame 50, the PU rope 58 passes through the side wall of the protection frame 50 through the wire rollers 59 and the end thereof is fixedly connected with an auxiliary connecting part.

[0040] Among them, the auxiliary connection part includes a second fixing ring 60, and a placement groove 61 is opened on the side wall of the positioning pin 20. The placement groove 61 is a concave structure, and the second fixing ring 60 is fixedly connected to the inner side of the placement groove 61. The terminal end of the PU rope 58 is detachably fixedly connected to the second fixing ring 60.

[0041] When in use, the movable plate 52 and the limit plate 54 are elastically connected through the telescopic spring 56. When the positioning pin 20 breaks and falls, the PU rope 58 is affected by gravity to pull the sliding bar 55, and then the sliding bar 55 pulls the movable plate 52 to move synchronously, which will make the movable plate 52 slide inside the protective frame 50, thereby squeezing the telescopic spring 56. The telescopic spring 56 has a buffering effect through its elasticity, which can effectively buffer the impact force generated when the positioning pin 20 falls. The PU rope 58 can limit the swing range of the positioning pin 20. Through the cooperation of the universal wheel 53 and the strip slide groove 51, not only the moving trajectory of the movable plate 52 can be limited, but also the horizontal movement of the movable plate 52 can be made smoother, thereby avoiding the movable plate 52 from getting stuck.

[0042] The sliding rod 55 is slidably connected to the limiting plate 54 , one end of the telescopic spring 56 is fixedly connected to the moving plate 52 , and the other end of the telescopic spring 56 is fixedly connected to the limiting plate 54 .

[0043] Working principle: When in use, first insert the D-ring 10 through the U-shaped notch of the connecting part 30, then pass the positioning pin 20 through the through hole 31 and threadedly connect it with the threaded hole 32, so that the positioning pin 20 is fixedly connected with the connecting part 30 through the threaded hole 32. After the fixing is completed, the tail stretch rod 40 is fixedly connected to the corresponding position of the tensile testing machine, and the tensile testing machine applies pressure to the tail stretch rod 40. After the D-ring 10 is welded and processed into a sample, it can be directly clamped on the testing machine, so as to ensure the smooth progress of the experiment. In order to prevent the positioning pin 20 used in the experiment from breaking, it is necessary to prevent the observer from The movable plate 52 and the limit plate 54 are elastically connected by the arranged telescopic spring 56. When the locating pin 20 breaks and falls, the PU rope 58 is affected by gravity to pull the sliding bar 55, and then the sliding bar 55 pulls the movable plate 52 to move synchronously, which makes the movable plate 52 slide inside the protective frame 50, thereby squeezing the telescopic spring 56. The telescopic spring 56 plays a buffering role through the elasticity of the telescopic spring 56, which can effectively buffer the impact force generated when the locating pin 20 falls. The PU rope 58 can limit the swing range of the locating pin 20 to avoid injuries to surrounding observers when the locating pin 20 breaks.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A D-ring tensile test tool, comprising a positioning portion, a connecting portion (30) and a fixing portion, characterized in that: in, The positioning portion and the connecting portion (30) are detachably fixedly connected, and are used for fixedly connecting the D-shaped ring (10); The connecting portion (30) is fixedly connected to the fixing portion, and the fixing portion is fixedly connected to a corresponding position of the tensile testing machine; A protective portion is fixedly connected to the side wall of the connecting portion (30), and the protective portion and the positioning portion are detachably fixedly connected to fix the positioning pin (20); The protection part comprises a T-shaped protection frame (50), a cavity is arranged inside the protection frame (50), strip-shaped slide grooves (51) are provided on the inner walls on two opposite sides of the protection frame (50), a movable plate (52) is arranged between the two strip-shaped slide grooves (51), universal wheels (53) are fixedly connected to the outer walls on two opposite sides of the movable plate (52), the treads of the two universal wheels (53) are always in contact with the inner walls of the corresponding strip-shaped slide grooves (51), a limiting plate (54) is vertically arranged inside the protection frame (50), and the movable plate (52) is close to the limiting plate (54). A sliding rod (55) is fixedly connected on one side, the sliding rod (55) passes through the limiting plate (54), a telescopic spring (56) is arranged between the movable plate (52) and the limiting plate (54), a first fixing ring (57) is fixedly connected on the side of the sliding rod (55) away from the movable plate (52), a PU rope (58) is detachably fixedly connected to the first fixing ring (57), a plurality of wire rollers (59) are arranged on the inner wall of the protective frame (50), the PU rope (58) passes through the side wall of the protective frame (50) via the wire rollers (59) and an auxiliary connecting part is fixedly connected to the end thereof; The auxiliary connection portion comprises a second fixing ring (60), a placement groove (61) is provided on the side wall of the positioning pin (20), the placement groove (61) is a concave structure, the second fixing ring (60) is fixedly connected to the inner side of the placement groove (61), and the terminal end of the PU rope (58) is detachably fixedly connected to the second fixing ring (60); The sliding rod (55) is slidably connected to the limiting plate (54), one end of the telescopic spring (56) is fixedly connected to the moving plate (52), and the other end of the telescopic spring (56) is fixedly connected to the limiting plate (54).

2. The D-ring tensile test tool according to claim 1, characterized in that: The positioning portion comprises a positioning pin (20), the positioning pin (20) is an L-shaped structure, an assembly end of the positioning pin (20) is provided with an external thread, an end of the positioning pin (20) close to the external thread is provided with a through hole (21), and the through hole (21) cooperates with the pin (22).

3. The D-ring tensile test tool according to claim 2, characterized in that: The connecting portion (30) is a U-shaped structure, and a through hole (31) and a threaded hole (32) are respectively provided near both ends of the connecting portion (30), and the positioning pin (20) passes through the through hole (31) and is threadedly connected to the threaded hole (32) to fix the positioning portion and the connecting portion (30).

4. The D-ring tensile test tool according to claim 3, characterized in that: The fixing portion comprises a tail stretching rod (40), the tail stretching rod (40) and the connecting portion (30) are an integrally formed structure, the tail stretching rod (40) is fixedly connected to a corresponding position of the tensile testing machine, and the D-shaped ring (10) is inserted through a U-shaped notch of the connecting portion (30).

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