Auxiliary device for measuring percentage elongation after fracture of rod and wire

Abstract

The utility model provides an auxiliary device for measuring the percentage elongation after fracture of rods and wires, which comprises a support, a slideway arranged on the support, and two groups of rod and wire support pipes arranged on the slideway through a sliding seat, the number of the rod and wire support pipes is two, and the inner diameter of each rod and wire support pipe is in clearance fit with the rod and wire to be measured. The rod and wire supporting pipe comprises a telescopic bracket and a sleeve, the bracket is vertically fixed to the sliding base, and the sleeve is in threaded connection with the top of the bracket through a connector. By arranging the rod and wire supporting pipes, the rod and wire can be better held, and by arranging the sliding ways and the sliding seats, the two sets of rod and wire supporting pipes can be close to or far away from each other along the sliding ways, so that rod and wire samples can be aligned more conveniently and quickly, and the measurement efficiency is improved; the locking mechanism is arranged on the sliding seat, and the sliding seat is fixed after the two rod and wire support pipes are controlled to be close to the fracture of the rod and wire sample to be aligned, so that the sample is prevented from sliding along the slide way during measurement, and the accuracy of measured data is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of bar and wire rod tensile test detection auxiliary device, and relates to an auxiliary device, especially an auxiliary device for measuring the elongation after break of bar and wire rod. BACKGROUND

[0002] Bar and wire rod tensile test is to detect the performance indexes such as yield, tensile strength and elongation after break of bar and wire rod, and is necessary performance detection before product delivery. Bar and wire rod tensile test needs to mark the surface of bar and wire rod in advance by a dotter, then clamp the bar and wire rod on the upper and lower clamping openings of a tensile testing machine, start tensile operation of the bar and wire rod, after tensile test is finished, the machine is depressurized, the tensile testing machine is turned off, the upper and lower broken samples are taken down and placed on a work platform, then the two broken samples are placed on the work platform to re-connect the broken part, the elongation distance between the dotting intervals is measured, and then the elongation after break is calculated.

[0003] The current work platform has the problem that the samples will roll forward and backward, leading to difficult alignment, and if the work platform is designed as a stable clamping groove of a certain shape, it will be inconvenient for vernier caliper measurement, the measurement process of each bar is close to 1 minute, and data is taken from a certain inclined angle, which will cause data deviation. Even experienced experimenters need to repeatedly measure the data with high concentration, and there are problems of low measurement efficiency and inaccurate data, which seriously affect the test progress. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an auxiliary device for measuring the elongation after break of bar and wire rod to solve the technical problems of low measurement efficiency, inaccurate data and further affecting the test progress in the prior art.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows:

[0006] An auxiliary device for measuring the elongation after break of bar and wire rod comprises a support, a slide arranged on the support, and a bar and wire rod supporting pipe arranged on the slide through a sliding seat, the number of the bar and wire rod supporting pipes is two groups arranged along the same slide, and the inner diameter of the bar and wire rod supporting pipe is matched with the gap of the bar and wire rod to be measured.

[0007] The bar and wire rod supporting pipe comprises a telescopic bracket and a sleeve, the bracket is vertically fixed on the sliding seat, and the sleeve is threadedly connected with the top of the bracket through a connecting head.

[0008] The bracket comprises a bracket A and a bracket B, the lower end of the bracket A is fixed with the sliding seat, a plurality of height adjusting holes are uniformly arranged on the side wall of the bracket A, the bracket B is matched with the height adjusting holes through a spring pin and is sleeved on the bracket A, and the sleeve is arranged on the upper end of the bracket B.

[0009] The locking mechanism is arranged on the sliding seat, and the sliding seat is pressed against or separated from the slide through the locking mechanism.

[0010] The locking mechanism comprises a pressing screw hole and a pressing screw, and the pressing screw is in contact with or separated from the slide after passing through the pressing screw hole.

[0011] The auxiliary device for measuring the post-elongation rate of rod wire has the advantages that the rod wire is better held, the sample is prevented from shaking during measurement, the two groups of rod wire holding pipes can be moved close to or away from each other along the slide, so that the rod wire sample can be aligned more conveniently and quickly, and the measurement efficiency is improved, the sample is prevented from sliding along the slide after the two rod wire holding pipes are controlled to be close to the fracture of the rod wire sample, the slide is fixed, the sample is placed in the sleeve, the two interval points of the sample are suspended, so that the vernier caliper can be directly used for accurate measurement, and the accuracy of the measurement data is improved, and the sleeve is screw-connected with the bracket B through the connecting head, so that the sleeve can be replaced when different diameter rod wires need to be measured, the sleeve has a wider application range and is more flexible.

[0012] The technical scheme has the advantages of simple structure, good stability, convenient and fast sample alignment, high-accuracy measurement, and wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of the main structure of the utility model;

[0014] Figure 2 is a schematic view of the main structure of the rod wire holding pipe of the utility model;

[0015] Marked in the figure: 1, support, 2, slide, 3, sliding seat, 4, bracket, 5, sleeve, 6, connecting head, 7, bracket A, 8, bracket B, 9, locking mechanism, 10, pressing screw. DETAILED DESCRIPTION

[0016] In order to better understand the purpose, structure and function of the utility model, the utility model will be further described in detail in combination with the drawings.

[0017] For example, Figure 1 , Figure 2The utility model provides a kind of auxiliary device for measuring rod wire elongation after break, it includes support 1, chute 2 being arranged on support 1, rod wire support pipe being arranged on chute 2 by sliding seat 3, the number of the rod wire support pipe is two groups being arranged along the same chute 2, and the inner diameter of the rod wire support pipe is matched with the clearance of the rod wire to be measured. In the embodiment, the rod wire support pipe is first pushed away from each other when in use, then the two rod wire samples broken by pulling are inserted into the rod wire support pipe respectively, the spacing point of sample is adjusted to extend out of the rod wire support pipe, and then the rod wire support pipe is pushed to each other along the chute 2, and the measurement can be carried out when the broken ends of the two rod wire samples are aligned.

[0018] Further, in order to facilitate the adjustment of the measurement height, facilitate the use of different users, and also to facilitate the alignment of the broken ends of the sample, the rod wire support pipe in the embodiment includes a telescopic bracket 4 and a sleeve 5. Preferably, the bracket 4 includes a bracket A 7 and a bracket B 8. The bracket A 7 is vertically arranged and fixed at the lower end of the sliding seat 3. A plurality of height adjustment holes are uniformly arranged on the side wall of the bracket A 7. The bracket B 8 is fitted on the bracket A 7 through a spring pin cooperating with the height adjustment hole. The sleeve 5 is arranged on the upper end of the bracket B 8 through a connecting head 6 and is threadedly connected with the upper end of the bracket B 8. This facilitates the quick replacement of the sleeve 5 of the corresponding size when measuring different diameter samples. When the thread of the connecting head 6 is screwed to the bottom, the sleeve 5 is parallel to the chute 2.

[0019] Further, in order to prevent the sliding seat 3 from sliding with the rod wire support pipe during measurement and improve the stability of the sample during measurement, the sliding seat 3 is provided with a locking mechanism 9. The sliding seat 3 is pressed or loosened from the contact with the chute 2 through the locking mechanism 9. Specifically, the locking mechanism 9 includes a pressing screw hole and a pressing screw 10. The pressing screw 10 is in contact with or separated from the chute 2 after passing through the pressing screw hole. When the broken end of the sample is controlled to contact, the pressing screw 10 is rotated to press the chute 2, so that the sliding seat 3 is relatively fixed with the chute 2, facilitating the measurement.

[0020] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. An auxiliary device for measuring the elongation at break of a rod wire, characterized in that: It includes a support (1), a slide (2) arranged on the support (1), a rod wire supporting pipe arranged on the slide (2) through a slide base (3), the number of the rod wire supporting pipe is two groups arranged along the same slide (2), and the inner diameter of the rod wire supporting pipe is matched with the gap of the rod wire to be measured.

2. The auxiliary device for measuring the elongation at break of a rod wire according to claim 1, characterized in that: The rod wire supporting pipe includes a telescopic bracket (4) and a sleeve (5), the bracket (4) is vertically fixed on the slide base (3), and the sleeve (5) is threadedly connected with the top of the bracket (4) through a connecting head (6).

3. The auxiliary device for measuring the elongation at break of a rod wire according to claim 2, characterized in that: The bracket (4) includes a bracket A (7) and a bracket B (8), the lower end of the bracket A (7) is fixed with the slide base (3), a plurality of height adjusting holes are uniformly arranged on the side wall of the bracket A (7), the bracket B (8) is sleeved on the bracket A (7) through a spring pin matched with the height adjusting hole, and the sleeve (5) is arranged on the upper end of the bracket B (8).

4. The auxiliary device for measuring the elongation at break of a rod wire according to claim 1, characterized in that: The slide base (3) is provided with a locking mechanism (9), and the slide base (3) is pressed or loosened from the contact with the slide (2) through the locking mechanism (9).

5. The auxiliary device for measuring the elongation at break of a rod wire according to claim 4, characterized in that: The locking mechanism (9) includes a pressing screw hole and a pressing screw (10), and the pressing screw (10) is contacted or separated from the slide (2) after penetrating through the pressing screw hole.

Images