CN219495068U - Quick screening fixture of hot rolling ribbed steel bar size quality - Google Patents

Abstract

The utility model discloses a hot rolled ribbed steel bar size and quality quick screening clamp which comprises a rectangular clamp body, wherein a first spacing measuring groove for a transverse rib of a steel bar is formed in the upper end face of the clamp body, a second spacing measuring groove for a transverse rib of the steel bar and a first height measuring groove for the transverse rib of the steel bar are formed in the lower end face of the clamp body, a second height measuring groove for the transverse rib of the steel bar and a measuring groove for the inner diameter of the steel bar are formed in the left end face of the clamp body, and a gap measuring groove for the tail end of the transverse rib of the steel bar is formed in the right end face of the clamp body. The fixture has the characteristics of on-site nondestructive testing, rapidness, accuracy, no requirement on technical capability of supervisory personnel and the like. The method can accurately and rapidly detect the size of the reinforcing steel bar on site by general supervision personnel, judge the quality of products and rapidly find out illegal behaviors of 'slimming reinforcing steel bars'.

Description

Quick screening fixture of hot rolling ribbed steel bar size quality

Technical Field

The utility model relates to the field of detection tools, in particular to a hot rolled ribbed steel bar size and quality rapid screening clamp.

Background

In product quality supervision, the rolling size quality of hot rolled ribbed bars is judged, particularly a supervision and management mechanism judges and checks "slimming" bars, at present, tool equipment such as vernier calipers, image measuring instruments and the like are mainly used, and professional technicians detect or sample in site and send the materials to a laboratory, and detection and judgment are carried out according to the standard GB/T1499.2-2018. At present, quality inspection institutions at all levels in China adopt spot check as a main mode for quality supervision of reinforced bar products. Whether the supervision of the steel bar is checked in the state level or the supervision of the city and county level is checked in the spot, namely, 5 steel bars with the fixed length are randomly extracted from a sample pile with the fixed length of 9000mm or 12000mm in the spot according to GB/T1499.2-2018 standard, then each sample with the length of 2.4m is intercepted, the sample is divided into two marks as a check sample and a sample preparation sample, the check sample is sent to a corresponding test room for detecting related projects after sealing, the technical staff re-intercepts the samples in the test room, then the dimensional parameters such as rib spacing, rib height, transverse rib end gap, inner diameter and the like are measured on 5 steel bars with the intercepted measuring length by using tools such as vernier calipers, image measuring instruments and the like, the weight deviation measurement is carried out on 5 samples with the length of not less than 50mm by using an electronic scale, the data processing is carried out, and finally the comprehensive dimensional parameters and weight deviation measurement results are used for judging whether the quality of products meets the requirements or not.

In the current detection method, a sample is extracted by a sampling mechanism and sent to a laboratory for detection. The method is characterized by damage detection (waste of customer raw materials), long period, high requirements for detection technicians and the like. Extracting a sample to waste detection materials, and matching with a wishly difference by a customer; the test period of the laboratory is long, unqualified products cannot be controlled rapidly and effectively, the optimal case handling time for producing the fake unqualified products is easily missed, and the unqualified products flow to the market and are damaged; the method is limited by the capability of the professional technology, has high requirements on detection technicians, and cannot be used for on-site supervision and detection by basic level supervision staff.

Disclosure of Invention

Aiming at the problems, the utility model discloses a hot rolled ribbed steel bar size and quality rapid screening clamp which has the characteristics of on-site nondestructive detection, rapidness and accuracy, no requirement on technical capability of supervisory personnel and the like. The method can accurately and rapidly detect the size of the reinforcing steel bar on site by general supervision personnel, judge the quality of products and rapidly find out illegal behaviors of 'slimming reinforcing steel bars'.

The utility model provides a quick screening fixture of hot rolling ribbed bar size quality, includes rectangular fixture body, the first interval measurement recess of reinforcing bar cross rib has been seted up to the up end of fixture body, the first height measurement recess of reinforcing bar cross rib second interval measurement recess and reinforcing bar cross rib has been seted up to the lower terminal surface of fixture body, the left end face of fixture body is provided with reinforcing bar cross rib second height measurement recess and reinforcing bar internal diameter measurement recess, the right-hand member face of fixture body is provided with the terminal clearance measurement recess of reinforcing bar cross rib.

Preferably, the width and depth of all the measuring grooves are different.

Preferably, all measuring grooves are U-shaped grooves.

Preferably, the side faces and the bottom faces of all the measuring grooves are arranged perpendicular to each other.

Preferably, the second spacing measuring grooves of the transverse ribs of the steel bars and the first height measuring grooves of the transverse ribs of the steel bars are sequentially arranged along the left-right length direction of the lower end face of the fixture body.

Preferably, the second height measuring grooves of the transverse ribs of the steel bars and the inner diameter measuring grooves of the steel bars are sequentially arranged along the upper and lower length directions of the left end face of the clamp body.

Preferably, the screening tool is made of stainless steel.

Advantageous effects

(1) The method can realize on-site detection, and has the characteristics of nondestructive detection, rapid detection, low requirement on technical capability of personnel and the like. By using the method, general market supervisory personnel do not need to draw samples, and can quickly and accurately screen and find out the steel bars with unqualified size and weight deviations on the sites of production, sales, processing, use and the like in time by using simple measuring tools such as special fixtures, electronic platform scales and the like.

(2) According to the method, samples are not required to be intercepted on site and sent to a laboratory for detection, and a market supervision law enforcement personnel or related personnel can detect the size and weight deviation of the reinforcing steel bars on site and quickly screen and find the 'slimming reinforcing steel bars'. The method solves the problems of long detection period, waste of detection materials, high requirements on service capacity of technicians and the like of the traditional method.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

in the figure: 1. the first interval of reinforcing bar transverse rib measures the recess, 2, reinforcing bar transverse rib second interval measurement recess, 3, reinforcing bar transverse rib second height measurement recess, 4, reinforcing bar transverse rib first height measurement recess, 5, reinforcing bar internal diameter measurement recess, 6, reinforcing bar transverse rib terminal clearance measurement recess.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Aiming at the problems existing in the background technology, the utility model discloses a hot rolled ribbed steel bar size and quality quick screening fixture, which is characterized in that 15 sets of special detection fixtures with different sizes are manufactured as shown in figure 1, all the steel bar overall dimensions with the specification of 6mm-50mm are covered and screened by GB/T1499.2-2018 standard, and the sizes of the steel bars and weight deviations can be quickly found out without intercepting and damaging the sample on-site screening by combining a plurality of electronic scales and a composite weighing meter.

Each set of fixture all includes rectangular stainless steel fixture body, has seted up the first interval measurement recess 1 of reinforcing bar cross rib at the up end of fixture body, has seted up the first altitude measurement recess 4 of reinforcing bar cross rib second interval measurement recess 2 and reinforcing bar cross rib from left to right in proper order at the lower terminal surface of fixture body, has set gradually reinforcing bar internal diameter measurement recess 5 and reinforcing bar cross rib second altitude measurement recess 3 from last to lower at the left end of fixture body, is provided with reinforcing bar cross rib terminal clearance measurement recess 6 at the right-hand member face of fixture body. All measurement grooves are U-shaped groove structures, and the width and the depth of all U-shaped measurement grooves are different. The side surface and the bottom surface of the measuring groove are mutually perpendicular.

For example, a field test screens a steel bar with a size of 9000mm and a specification of 12mm, and tools are needed:

1. a set of clamping apparatus with the specification of 12 mm;

2. two electronic platform scales with 20kg measuring range and 0.1kg precision

Firstly, the fixture is used for detecting and screening projects such as rib spacing, transverse rib height, longitudinal rib height, transverse rib tail end gap, inner diameter and the like. Secondly, the two electronic platform scales are swung away in a straight line, the steel bars are prevented from being grounded, and a bracket with proper height can be placed for preventing the steel bars from being grounded. The weights of the electronic platform scales are respectively read and summed. Finally, the weight deviation compliance is judged according to GB/T1499.2-2018, and the compliance of the detected items is comprehensively judged by combining the clamp check values, so as to determine whether the detected items are the 'weight-reducing steel bars'. During which time samples are not purchased and the test period is 30 minutes.

Whereas the traditional method is to extract 5 bars of fixed length 9000mm from the customer product, each cut 2400mm. Then the sample is divided into two parts, which are respectively marked as a sample detection and a sample preparation. The remainder may be discarded. The spot check mechanism pays for purchasing the sample, and the sealed sample is sent to the inspection mechanism for size and weight deviation measurement. The period is limited by the transportation time limit, and the period is generally about one week, and if the period is large-batch spot check, the period can take a plurality of weeks.

In a certain province of steel bar market supervision, 500 batches have been rapidly screened using this method. Two persons work for 8 hours a day to easily detect 10 batches.

The detection method can realize on-site detection without extracting the detection material, does not damage or take away the sample of the customer, belongs to nondestructive detection, and does not waste the detection material. The common measuring tools such as the clamp and the simple platform scale are used for comparison detection and compound weighing, the requirements on the technical capability of the technician capability professional technology are low, and general market supervision personnel can quickly and accurately screen and find unqualified products of related items on site and quickly find 'slimming steel bars'. Compared with the traditional detection method, the method is simple and easy to operate, high in efficiency, free of waste of detection materials, easy to obtain high-level matching of clients, high in screening efficiency and capable of timely finding unqualified products. The market supervision flow is shortened, and the supervision efficiency is improved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a quick screening fixture of hot rolling ribbed bar size quality, its characterized in that, includes rectangular fixture body, the first interval measurement recess of reinforcing bar cross rib has been seted up to the up end of fixture body, the first altitude measurement recess of reinforcing bar cross rib second interval measurement recess and reinforcing bar cross rib has been seted up to the lower terminal surface of fixture body, the left end face of fixture body is provided with reinforcing bar cross rib second altitude measurement recess and reinforcing bar internal diameter measurement recess, the right-hand member face of fixture body is provided with reinforcing bar cross rib terminal clearance measurement recess.

2. The rapid screening jig for the dimensional quality of hot rolled ribbed steel bars according to claim 1, wherein the width and depth of all the measuring grooves are different.

3. The rapid screening jig for the dimensional quality of hot rolled ribbed steel bars of claim 1 wherein all of the measuring grooves are U-shaped grooves.

4. The rapid screening jig for the dimensional quality of hot rolled ribbed steel bars according to claim 1, wherein the side surfaces and the bottom surfaces of all the measuring grooves are disposed perpendicular to each other.

5. The rapid screening jig for the dimensional quality of hot rolled ribbed steel bars according to claim 1, wherein the second spacing measuring grooves of the reinforcing bar cross ribs and the first height measuring grooves of the reinforcing bar cross ribs are arranged in sequence along the left-right length direction of the lower end face of the jig body.

6. The rapid screening jig for the dimensional quality of hot rolled ribbed steel bars according to claim 1, wherein the second height measuring grooves of the transverse ribs of the steel bars and the inner diameter measuring grooves of the steel bars are sequentially arranged along the upper and lower length directions of the left end face of the jig body.

7. The rapid screening jig for the dimensional quality of hot rolled ribbed steel bars of claim 1, wherein the screening tool is stainless steel.