CN216410871U

CN216410871U - Tensile test tool

Info

Publication number: CN216410871U
Application number: CN202122444930.4U
Authority: CN
Inventors: 黄伟辰
Original assignee: Zhuhai Zhonghang Aiwei Detection Technology Co ltd
Current assignee: Zhuhai Zhonghang Aiwei Detection Technology Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-04-29
Anticipated expiration: 2031-10-11

Abstract

The utility model relates to the technical field of tensile strength detection, and discloses a tensile test tool. The device comprises a fixing part and a sleeve, wherein the fixing part is provided with a first half-tension rod and a second half-tension rod, and two ends of the first half-tension rod and the second half-tension rod are jointed to form a separation slotted hole and a connecting slotted hole for fixing a piece to be detected respectively; the sleeve is sleeved on the outer wall of the fixing part to clamp and fix the first half-tension rod and the second half-tension rod. The structural characteristics of separation and attachment of the first half-tension rod and the second half-tension rod are utilized to clamp and fix a piece to be tested, the first half-tension rod and the second half-tension rod can be locked by matching with the sleeve, so that the clamping force of the connecting slotted hole on the piece to be tested is improved, the situation that the first half-tension rod and the second half-tension rod are separated in the test process is prevented, and the reliability is improved; after the test is completed, the first and second half-tension rods can be pried and separated from the separation slot hole, so that the part to be detected can be taken out, and the detection efficiency and the safety are improved.

Description

Tensile test tool

Technical Field

The utility model relates to the technical field of tensile strength detection, in particular to a tensile test tool.

Background

At present, when fasteners such as bolts and screws are subjected to tensile strength testing, the commonly adopted tool form is simple and reliable, a large number of nuts need to be configured, the testing cost is increased, the nut installation is time-consuming, and the method is not suitable for large-batch mechanical property detection. In addition, when the tested sample (bolt and screw) is broken, the thread part of the fastener is clamped in the threaded hole of the tension rod, so that a tester needs to take out the broken thread by means of tools such as a drill bit, a wrench, a hammer, a punch and the like, time and labor are wasted, certain danger is caused, and meanwhile damage to the thread of the tension rod is also aggravated.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the tensile test tool is convenient to test, install and disassemble, reduces the cost and synchronously improves the safety and reliability.

The tensile test tool comprises a fixing part and a sleeve, wherein the fixing part is provided with a first half tensile bar and a second half tensile bar which can be separated or connected in a matched mode, a connecting groove hole for fixing a piece to be tested is formed after a first end of the first half tensile bar is attached to a first end of the second half tensile bar, and a separating groove hole is formed after a second end of the first half tensile bar is attached to a second end of the second half tensile bar; the sleeve is sleeved on the outer wall of the fixing portion and used for clamping and fixing the first half tension rod and the second half tension rod.

The tensile test tool provided by the embodiment of the utility model at least has the following beneficial effects: the structural characteristics that the first half tension rod and the second half tension rod can be separated and attached are utilized, a piece to be tested can be conveniently clamped and fixed, the first half tension rod and the second half tension rod can be locked by matching with the sleeve, so that the clamping force of the connecting slotted hole on the piece to be tested is improved, meanwhile, the situation that the first half tension rod and the second half tension rod are separated in the test process can be prevented, and the reliability is improved; after the completion is experimental, when needing to be examined a dismantlement, can pry the separation with half first pulling force stick and half second pulling force stick from separation slot hole department through external instrument to the test personnel take out the piece that awaits measuring, this frock has not only simplified the installation flow to the piece that awaits measuring, has promoted detection efficiency, can be convenient for test personnel to take out the piece that awaits measuring simultaneously, has promoted the security.

According to some embodiments of the utility model, the inner wall of the sleeve is in threaded connection with the outer wall of the fixation part.

According to some embodiments of the utility model, the outer wall of the sleeve is provided with knurls.

According to some embodiments of the present invention, at least one positioning column is disposed on one side of the first half-pulling rod, which is attached to the second half-pulling rod; one side of the second half tension rod, which is attached to the first half tension rod, is provided with at least one positioning hole matched with the positioning column; when the first half tension rod and the second half tension rod are connected in a matched mode, the positioning columns are inserted into the corresponding positioning holes.

According to some embodiments of the present invention, at least one pair of the positioning posts and the positioning holes are respectively provided, and each pair of the positioning posts is symmetrically distributed on the side surface of the first tension bar half.

According to some embodiments of the present invention, the positioning columns and the positioning holes are respectively provided with a plurality of pairs, and the positioning columns are uniformly distributed on the side surface of the first half-tension bar.

According to some embodiments of the utility model, further comprising a first connection portion and a second connection portion; the first connecting part is provided with a mounting hole through which the second end of the piece to be detected can pass, and the size of the mounting hole is smaller than that of the first end of the piece to be detected; the second connecting part is sleeved on the outer wall of the fixing part; the first connecting portion and the second connecting portion are respectively used for being detachably connected with a testing machine.

According to some embodiments of the utility model, an inner wall of the second connecting portion is in threaded connection with an outer wall of the fixing portion.

According to some embodiments of the utility model, the second end of the fixing portion is provided with a stopper portion abutting against the second connecting portion.

According to some embodiments of the present invention, the inner wall of the connecting slot is provided with an internal thread which is in fit connection with the outside of the piece to be tested.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a tensile test fixture according to an embodiment of the present invention;

FIG. 2 is an exploded view of the tensile test fixture shown in FIG. 1;

FIG. 3 is a schematic structural diagram of a first tension bar of the tensile testing tool shown in FIG. 1;

FIG. 4 is an exploded view of a tensile test fixture according to another embodiment of the present invention;

FIG. 5 is a schematic assembled structural view of the tensile test fixture shown in FIG. 4;

fig. 6 is a schematic structural diagram of a tensile test tool according to another embodiment of the utility model.

Reference numerals: the testing device comprises a fixing portion 100, a first half-tension rod 110, a positioning column 111, a second half-tension rod 120, a positioning hole 121, a connecting slot 130, a separating slot 140, a blocking portion 150, a sleeve 200, a first connecting portion 300, a second connecting portion 400 and a to-be-tested piece 500.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. The description of first, second, etc. if any, is for the purpose of distinguishing between technical features and not intended to indicate or imply relative importance or implicitly indicate a number of indicated technical features or implicitly indicate a precedence relationship of indicated technical features.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 2, the tensile test fixture according to the embodiment of the present invention includes a fixing portion 100 and a sleeve 200, the fixing portion 100 has a first half tensile bar 110 and a second half tensile bar 120 that can be separated or connected in a matching manner, a connecting slot 130 for fixing a to-be-tested member 500 is formed after a first end of the first half tensile bar 110 and a first end of the second half tensile bar 120 are attached, and a separating slot 140 is formed after a second end of the first half tensile bar 110 and a second end of the second half tensile bar 120 are attached; the sleeve 200 is sleeved on the outer wall of the fixing portion 100, and the sleeve 200 is used for clamping and fixing the first half tensile bar 110 and the second half tensile bar 120.

During the test, one end of the piece 500 to be tested is firstly placed on the position of the connecting slot 130 corresponding to the first half tension bar 110, then the second half tension bar 120 on the other side is matched, attached, abutted and connected with the first half tension bar 110 to form the fixing part 100, the sleeve 200 is sleeved on the fixing part, the first half tension bar 110 and the second half tension bar 120 are locked and fixed, then the fixing part 100 and the other end of the piece 500 to be tested are matched and fixedly connected with a corresponding testing machine, the testing machine is used for respectively applying force to the piece 500 to be tested and the fixing part 100 in a reverse direction mode, so that the piece 500 to be tested is subjected to a reverse tensile test to detect the strength of the piece 500 to be tested, after the test is completed, the tool is taken down from the testing machine, if the piece to be tested is broken and is clamped in the connecting slot, the external tool is used for prying the separating slot 140, the first half tension bar 110 and the second half tension bar 120 can be pried apart, the separation difficulty is reduced, so that the tester can take out the piece 500 to be tested conveniently.

Referring to fig. 1 to 2, in some embodiments of the present invention, the inner wall of the sleeve 200 is screw-coupled to the outer wall of the fixing portion 100. By adopting the threaded connection mode, the firmness of the connection between the sleeve 200 and the fixing portion 100 can be improved, the phenomenon that the fixing portion 100 is easily separated from the sleeve 200 can be prevented, the detection result of the to-be-detected piece 500 is influenced, and the reliability is effectively improved.

In some embodiments of the utility model, the outer wall of the sleeve 200 is provided with knurling. When the sleeve 200 is installed, the sleeve 200 needs to be rotated by an external tool, so that the threads between the sleeve 200 and the fixing portion 100 can be matched, connected and locked, and by providing the knurling, the friction force of the external tool on the sleeve 200 can be improved, so that the sleeve 200 can be rotated.

Referring to fig. 2 and 3, in some embodiments of the present invention, at least one positioning column 111 is disposed on one side of the first half tensile bar 110, which is attached to the second half tensile bar 120; one side of the second half tension bar 120, which is attached to the first half tension bar 110, is provided with at least one positioning hole 121 matched with the positioning column 111; when the first half tension bar 110 is connected with the second half tension bar 120 in a matching manner, the positioning posts 111 are inserted into the corresponding positioning holes 121. The positioning column 111 and the positioning hole 121 which correspond to each other are matched, so that a tester can conveniently confirm whether the positions between the first half tension rod 110 and the second half tension rod 120 are matched and attached when mounting, and can confirm that the positioning of the connecting slot 130 on the to-be-tested part 500 is accurate and is connected after matching and overlapping, and therefore, the positioning column 111 and the positioning hole 121 are matched, and the mounting efficiency can be improved.

It is conceivable that the first half tension bar 110 is provided with the positioning column 111 and the positioning hole 121 at the same time, and the second half tension bar is provided with the corresponding positioning hole 121 and the positioning column 111 at the corresponding positions.

Referring to fig. 2 and 3, in some embodiments of the present invention, at least one pair of positioning posts 111 and positioning holes 121 are respectively provided, and each pair of positioning posts 111 is symmetrically distributed on the side surface of the first tension bar half 110.

Referring to fig. 2 and 3, in some embodiments of the present invention, a plurality of pairs of positioning posts 111 and positioning holes 121 are respectively disposed, and the plurality of pairs of positioning posts 111 are uniformly distributed on the side surface of the first tension bar half 110. Because when carrying out tensile test on the testing machine, because the effect of the two-way pulling force of testing machine, it can appear frictional force between first half pulling force stick 110 and second half pulling force stick 120, through setting up symmetrical reference column 111, can disperse the effort between reference column 111 and the locating hole 121 to reduce reference column 111 and appear cracked risk. Through setting up many pairs of reference column 111, can further promote the precision that the cooperation between first half pulling force stick 110 and the second half pulling force stick 120 is connected, not only can promote the installation effectiveness, can promote the reliability that the experiment detected simultaneously. Specifically, in the present embodiment, four positioning posts 111 and four positioning holes 121 are respectively provided.

Referring to fig. 4 and 5, in some embodiments of the present invention, a first connection portion 300 and a second connection portion 400 are further included; the first connecting portion 300 is provided with a mounting hole (not shown) through which the second end of the dut 500 can pass, and the size of the mounting hole (not shown) is smaller than that of the first end of the dut 500; the second connecting portion 400 is sleeved on the outer wall of the fixing portion 100; wherein, first connecting portion 300 and second connecting portion 400 are used for dismantling the connection with the testing machine respectively. Specifically, in the embodiment, the to-be-tested member 500 is a screw or a bolt, so that the screw of the to-be-tested member 500 is fixedly connected in the connecting slot 130, and the size of the mounting hole (not shown) needs to be smaller than the size of the head of the to-be-tested member 500, during the test installation, the first connecting portion 300 and the second connecting portion 400 are fixedly connected with the testing machine, and then the first connecting portion 300 and the second connecting portion 400 are reversely applied with force, respectively, during the stretching process, the first connecting portion 300 applies force to the head of the to-be-tested member 500, the second connecting portion 400 applies force reversely to the fixing portion 100, and further, the connecting slot 130 applies force reversely to the screw of the to-be-tested member 500, so that the tensile test of the to-be-tested member 500 can be realized, and the strength of the to-be-tested member 500 can be tested.

In some embodiments of the present invention, the inner wall of the second connecting portion 400 is screwed with the outer wall of the fixing portion 100. Adopt threaded connection, can improve the frictional force between second connecting portion 400 and the fixed part 100 to in experimental time, can ensure that the application of force of testing machine can pass through second connecting portion 400, fixed part 100, connect slotted hole 130 to the second end of the piece 500 that awaits measuring, the screw rod part realizes dragging promptly, has promoted reliability and the security that detects effectively.

In some embodiments of the present invention, the inner wall of the connecting slot 130 is provided with an internal thread for matching and connecting with the exterior of the device under test 500. It can be known that the piece 500 to be measured can be a bolt or a screw, when the cooperation is installed, the screw part of the bolt or the screw is arranged in the corresponding connection slotted hole 130, when the external thread is arranged outside the piece 500 to be measured, the corresponding internal thread can be arranged on the inner wall of the sleeve 200, so that the friction force between the connection slotted hole 130 and the piece 500 to be measured can be improved, in the test process, the condition that the piece 500 to be measured can be separated from the connection slotted hole 130 can be effectively prevented, and the reliability and the safety are effectively improved.

Referring to fig. 6, in some embodiments of the present invention, the second end of the fixing portion 100 is provided with a stopper 150 abutting against the second connecting portion 400. When the structure of fender portion 150 is adopted, the second connecting portion 400 can be earlier located to cover inwards from the first end of fixed part 100, then sleeve 200 is established to the cover, and finally when examining with the installation of testing machine, second connecting portion 400 then can extrude mutually with fender portion 150 to can realize dragging fixed part 100, wherein, fender portion 150 can be a plurality of, and distribute along the circumference of fixed part 100, and fender portion 150 also can be annular structure simultaneously.

According to the tensile test tool provided by the embodiment of the utility model, at least the following effects can be achieved by the arrangement, the structural characteristics that the first half tensile bar 110 and the second half tensile bar 120 can be separated and attached are utilized, the clamping and fixing of the piece 500 to be tested can be facilitated, the first half tensile bar 110 and the second half tensile bar 120 can be locked by matching with the sleeve 200, the clamping force of the connecting slotted hole 130 on the piece 500 to be tested is improved, meanwhile, the situation that the first half tensile bar 110 and the second half tensile bar 120 are separated in the test process can be prevented, and the reliability is improved; after the completion is experimental, when needing to be examined 500 and dismantling, can pry the separation with half first pull rod 110 and half second pull rod 120 from separation slotted hole 140 department through external instrument to the test personnel takes out the piece 500 that awaits measuring, this frock has not only simplified the installation flow to the piece 500 that awaits measuring, has promoted detection efficiency, and the test personnel that can be convenient for simultaneously takes out the piece 500 that awaits measuring, has promoted the security.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a tensile test frock which characterized in that includes:

the fixing part is provided with a first half tension rod and a second half tension rod which can be separated or connected in a matched mode, a first end of the first half tension rod and a first end of the second half tension rod are attached to form a connecting slot hole for fixing a piece to be detected, and a second end of the first half tension rod and a second end of the second half tension rod are attached to form a separating slot hole;

the sleeve is sleeved on the outer wall of the fixing part and used for clamping and fixing the first half tension rod and the second half tension rod.

2. The tensile test tool of claim 1, wherein: the inner wall of the sleeve is in threaded connection with the outer wall of the fixing part.

3. The tensile test tool of claim 2, wherein: the outer wall of the sleeve is provided with knurling patterns.

4. The tensile test tool of claim 1, wherein: at least one positioning column is arranged on one side of the first half-tension rod, which is attached to the second half-tension rod; one side of the second half tension rod, which is attached to the first half tension rod, is provided with at least one positioning hole matched with the positioning column;

when the first half tension rod and the second half tension rod are connected in a matched mode, the positioning columns are inserted into the corresponding positioning holes.

5. The tensile test tool of claim 4, wherein: at least one pair of positioning columns and at least one pair of positioning holes are respectively arranged on the positioning columns, and each pair of positioning columns is symmetrically distributed on the side surface of the first half tension rod.

6. The tensile test tool of claim 5, wherein: the positioning columns and the positioning holes are respectively provided with a plurality of pairs, and the positioning columns are uniformly distributed on the side surface of the first half tension rod.

7. The tensile test tool of claim 1, wherein: further comprising:

the first connecting part is provided with a mounting hole which can allow the second end of the piece to be detected to pass through, and the size of the mounting hole is smaller than that of the first end of the piece to be detected;

the second connecting part is sleeved on the outer wall of the fixing part;

the first connecting portion and the second connecting portion are respectively used for being detachably connected with a testing machine.

8. The tensile test tool of claim 7, wherein: the inner wall of the second connecting part is in threaded connection with the outer wall of the fixing part.

9. The tensile test tool of claim 7, wherein: and a blocking part which is abutted against the second connecting part is arranged at the second end of the fixing part.

10. The tensile test tool of any one of claims 1 to 9, wherein: the inner wall of the connecting groove hole is provided with an internal thread which is matched and connected with the outside of the piece to be detected.