CN218297824U - Small-size heavy H-shaped steel Z-direction tensile test auxiliary device - Google Patents
Small-size heavy H-shaped steel Z-direction tensile test auxiliary device Download PDFInfo
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- CN218297824U CN218297824U CN202221890387.9U CN202221890387U CN218297824U CN 218297824 U CN218297824 U CN 218297824U CN 202221890387 U CN202221890387 U CN 202221890387U CN 218297824 U CN218297824 U CN 218297824U
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Abstract
The utility model discloses a heavy H shaped steel Z of small dimension is to tensile test auxiliary device relates to mechanical properties inspection technical field. This heavy H shaped steel Z of small dimension is to tensile test auxiliary device for the centre gripping of sample, the sample includes the sample body, the one end of sample body is provided with the exposed core, the device includes supporting rod and test piece dop, the test piece dop is connected in supporting rod one end, the through-hole that is used for placing the sample exposed core is offered in the lateral direction of test piece dop, the draw-in groove that the card that supplies the sample body is gone into is seted up to the tip that the connecting rod was kept away from to the through-hole. This heavy H shaped steel Z of small dimension is to tensile test auxiliary device can be very conveniently will treat tensile sample both ends and place the block on test piece chuck from top to bottom, then can directly test, and convenient and fast effectively solves the difficult problem of the heavy H shaped steel web thickness direction tensile test of small dimension.
Description
Technical Field
The utility model relates to a mechanical properties inspection technical field specifically is a heavy H shaped steel Z of small dimension is to tensile test auxiliary device.
Background
And the Z-direction tensile test of the heavy H-shaped steel evaluates the lamellar tearing resistance of the steel plate by detecting the shrinkage performance of the web and the flange in the thickness direction. The existing clamping mode has two types:
1. directly clamping two end parts of a sample by adopting a hydraulic horizontal pushing clamp of a testing machine;
2. the thickness of the web plate is increased through a friction welding process, a normal sample is turned, and the two end parts of the sample are clamped by a hydraulic flat push clamp of a testing machine.
The clamping length requirement of the tensile testing machine is as follows: the sample clamping length is more than or equal to 3/4 (not less than 30 mm) of the length of the hydraulic horizontal pushing clamp of the testing machine. The thickness of the web and the flange of the conventional heavy H-shaped steel is 25-90 mm, the clamping length of a prepared tensile sample is only 5-20 mm, and the clamping requirement of a testing machine cannot be met.
By adopting the mode 1, the Z-direction stretching clamping length is insufficient, the stress on the clamping two ends is uneven, the two clamping blocks incline to form an A shape, the end part of a sample is easy to deform and slide in the stretching process, and the service life of a hydraulic horizontal pushing clamp of the testing machine is also influenced in serious cases;
by adopting the mode 2, the thickness of the web plate needs to be increased by a friction welding process for outsourcing, the workload is increased, the cost is wasted, the processing period is prolonged, and the test is invalid due to the fracture of the sample at the position of a welding line and a heat affected zone caused by poor welding and the like.
Therefore, it is necessary to provide an auxiliary device for a Z-direction tensile test of small-sized heavy H-shaped steel to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a heavy H shaped steel Z of small dimension is to tensile test auxiliary device has solved the technical problem who mentions in the background art.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a heavy H shaped steel Z of small dimension is to tensile test auxiliary device for the centre gripping of sample, the sample includes the sample body, the one end of sample body is provided with the exposed core, the device includes supporting rod and test piece dop, the test piece dop is connected in supporting rod one end, the through-hole that is used for placing the sample exposed core is offered in the test piece dop side direction run through, the draw-in groove that the card that supplies the sample body is gone into is seted up to the tip that the supporting rod was kept away from to the through-hole.
Preferably, the clamping rod and the test piece clamping head are detachably connected.
Preferably, the clamping rod is in threaded connection with the test piece chuck.
Preferably, the clamping rod is provided with an anti-skidding structure.
Preferably, the anti-skid structure is at least one of salix leaf salient points and anti-skid corrugations.
Preferably, the longitudinal section of the through hole is trapezoidal.
Preferably, the clamping groove is provided with a U-shaped opening.
Preferably, a circular groove is formed in the U-shaped opening of the clamping groove and used for clamping and positioning the sample clamped into the clamping groove.
(III) advantageous effects
The utility model provides a heavy H shaped steel Z of small dimension is to tensile test auxiliary device. The method has the following beneficial effects:
this heavy H shaped steel Z of small dimension is to tensile test auxiliary device can be very conveniently will treat tensile sample both ends and place the block on test piece chuck from top to bottom, then can directly test, and convenient and fast effectively solves the difficult problem of the heavy H shaped steel web thickness direction tensile test of small dimension.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a specimen chuck;
FIG. 3 is a schematic view of the structure of the clamping rod.
In the figure: 1. a clamping rod; 2. a test piece chuck; 21. a through hole; 22. a clamping groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the present embodiment provides a small-sized heavy H-section steel Z-direction tensile test auxiliary device, which includes a clamping rod 1 and a test piece chuck 2. The clamping rod 1 is used for being in snap-in connection with a hydraulic horizontal pushing clamp of the tensile testing machine, and the test piece chuck 2 is used for placing a sample. Test piece dop 2 is connected in 1 one end of supporting rod, and the through-hole 21 that is used for holding the sample exposed core is seted up in the side direction run through of test piece dop 2, and the draw-in groove 22 that supplies test piece tip card to go into is seted up to the tip that through-hole 21 kept away from supporting rod 1.
The heavy H shaped steel Z of small dimension to tensile test auxiliary device that this embodiment provided can be very conveniently will treat tensile sample both ends and place the block on test piece chuck from top to bottom, then can directly test, and convenient and fast effectively solves the difficult problem of the heavy H shaped steel web thickness direction tensile test of small dimension.
Referring to fig. 1 and 3, the joint of the clamping rod 1 and the test piece chuck 2 is in threaded connection, so that the situation that the whole device is scrapped due to the damage of the test piece chuck 2 is avoided, and different test piece chucks 2 can be replaced according to the processing specification of a Z-direction tensile test piece.
Referring to fig. 1 and 3, in order to increase the biting force between the parallel columns on both sides of the clamping rod 1 and the hydraulic horizontal pushing fixture of the Z-direction tensile testing machine, the anti-skid structure of the clamping rod 1 in this embodiment is preferably a salix leaf convex point or an anti-skid ripple.
Referring to fig. 1 and 2, the through hole 21 is trapezoidal, the clamping groove 22 is a U-shaped opening, a circular groove 23 is formed in the U-shaped opening, when a sample to be stretched is placed, the sample clamping section is fixed in the circular groove 23 of the U-shaped opening in the square through hole 21, and therefore the sample can be guaranteed to be vertically downward and clamped and positioned after the sample chuck is placed at each time.
Referring to fig. 1, 2 and 3, considering that the bearing surface of the device is stressed by no more than 75KN when the web material of the small-sized heavy H-shaped steel is stretched and the device is easy to process, through actual comparison tests, the clamping rod 1 and the test piece chuck 2 in this embodiment are preferably made of 45 steel materials and are prepared by quenching at 830 ℃ for 1H and tempering at 400 ℃ for 2H. The strength, hardness and corrosion resistance of the material can be guaranteed, the workability of the device is guaranteed, the device is convenient to machine and manufacture by self, and the cost is saved.
It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship of the structure of the present invention based on the drawings, and are only for the convenience of describing the present invention, but do 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.
The terms "first" and "second" in the present technical solution are only used to distinguish the same or similar structures or the corresponding structures having similar functions, and are not the arrangement of the importance of the structures, nor are they the order, or comparison of the sizes, or other meanings.
In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in relation to the present scheme in specific terms according to the general idea of the present invention.
Claims (8)
1. The utility model provides a heavy H shaped steel Z of small dimension is to tensile test auxiliary device for the centre gripping of sample, the sample includes the sample body, the one end of sample body is provided with the exposed core, the device includes supporting rod (1) and test piece dop (2), test piece dop (2) are connected in supporting rod (1) one end, its characterized in that: the test piece dop (2) side direction runs through and sets up through-hole (21) that are used for placing the sample clamping end, draw-in groove (22) that supply the card of sample body to go into are seted up to the tip that clamping rod (1) was kept away from in through-hole (21).
2. The Z-direction tensile test auxiliary device for the small-size heavy H-shaped steel according to claim 1, characterized in that: the clamping rod (1) is detachably connected with the test piece clamping head (2).
3. The Z-direction tensile test auxiliary device for the small-size heavy H-shaped steel according to claim 2, characterized in that: the clamping rod (1) is in threaded connection with the test piece chuck (2).
4. The Z-direction tensile test auxiliary device for the small-size heavy H-shaped steel according to claim 1, characterized in that: and the clamping rod (1) is provided with an anti-skidding structure.
5. The Z-direction tensile test auxiliary device for the small-size heavy H-shaped steel according to claim 4, characterized in that: the anti-skid structure is at least one of salix leaf salient points and anti-skid corrugations.
6. The Z-direction tensile test auxiliary device for the small-size heavy H-shaped steel according to claim 1, characterized in that: the longitudinal section of the through hole (21) is trapezoidal.
7. The Z-direction tensile test auxiliary device for the small-size heavy H-shaped steel according to claim 1, characterized in that: the clamping groove (22) is provided with a U-shaped opening.
8. The Z-direction tensile test auxiliary device for the small-size heavy H-shaped steel according to claim 7, characterized in that: a circular groove is formed in the U-shaped opening of the clamping groove (22), and the circular groove is used for clamping and positioning a sample clamped into the clamping groove (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221890387.9U CN218297824U (en) | 2022-07-21 | 2022-07-21 | Small-size heavy H-shaped steel Z-direction tensile test auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221890387.9U CN218297824U (en) | 2022-07-21 | 2022-07-21 | Small-size heavy H-shaped steel Z-direction tensile test auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218297824U true CN218297824U (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221890387.9U Active CN218297824U (en) | 2022-07-21 | 2022-07-21 | Small-size heavy H-shaped steel Z-direction tensile test auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218297824U (en) |
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2022
- 2022-07-21 CN CN202221890387.9U patent/CN218297824U/en active Active
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