阅读说明：本技术 一种恒拉力曲线长度测量装置 (Constant tension curve length measuring device ) 是由 金雨茜 范翼飞 王一 黄色贤 钟浩 宫玉龙 颉平平 汪鹏举 李�浩 张晓鸿 唐瑜 于 2020-12-01 设计创作，主要内容包括：本发明公开了一种恒拉力曲线长度测量装置,包括尺条和连接在尺条一个端部的拉力控制器,当用该测量装置进行测量时,固定拉力控制器位置,拉动尺条,待拉力控制器发出信号提示时,记录其尺条当前数据。本发明将拉力控制器安装在尺条端部上,增加拉力报警装置,实现钢卷尺在测量过程中的拉力实时监控与提醒,减少人为控制因素,除此之外采用表面粗糙并且带有磁性的尺条有效减轻竖直使用时的下垂问题,保证不同操作者测量结果的一致性以及准确度。(The invention discloses a constant tension curve length measuring device, which comprises a ruler strip and a tension controller connected to one end of the ruler strip, wherein when the measuring device is used for measuring, the position of the tension controller is fixed, the ruler strip is pulled, and when the tension controller sends a signal prompt, the current data of the ruler strip is recorded. The tension controller is arranged on the end part of the measuring tape, the tension alarm device is additionally arranged, so that the tension of the steel measuring tape in the measuring process is monitored and reminded in real time, the human control factors are reduced, in addition, the sag problem in vertical use is effectively reduced by adopting the measuring tape with rough surface and magnetism, and the consistency and the accuracy of the measuring results of different operators are ensured.)

1. A constant tension curve length measuring device is characterized in that: including the chi strip and connect the tension controller at a tip of chi strip, when measuring with this measuring device, concrete process is:

s1, initializing and setting the tension of the ruler strip through the tension controller;

and S2, fixing the position of the tension controller during testing, pulling the ruler strip, and recording the current data of the ruler strip when the tension controller carries out signal prompt.

2. A constant pull force curve length measuring device according to claim 1, wherein: the signal prompt is divided into two-stage prompt, when the tension of the ruler strip is consistent with the set value of the tension controller, the first-stage prompt is carried out, when the tension of the ruler strip is greater than the tension controller, the two-stage prompt is carried out, and the current tension of the ruler strip needs to be reduced during the two-stage prompt.

3. A constant pull force curve length measuring device according to claim 1, wherein: the surface of the ruler strip, which is contacted with the measured object, is a rough surface.

4. A constant pull force curve length measuring device according to claim 3, wherein: the rough surface is a magnetic frosted surface formed by a plurality of magnetic particles.

Technical Field

The invention relates to the field of measurement, in particular to a constant-tension curve length measuring device which reduces measurement errors caused by artificial operation factors, and therefore improves the automation control degree and accuracy of a measurement process.

Background

The steel tape is a commonly used flexible measuring tool, generally the measuring accuracy is not less than 0.1mm, at present use very extensively in the manufacturing field, is the main measuring tool of tolerance more than 0.1mm work piece, compares infrared ray and laser measurement chi, and the steel tape has the advantage of being unique, and the steel tape is with its advantage such as conveniently carrying, low price, applicable wide range, is used in the manufacturing industry for a long time, extensively.

Compared with infrared measurement and laser measurement methods, the steel tape measurement has the following advantages:

1. the operation is easy. Operators with low technical level can also flexibly use the steel tape.

2. The service life is long. The problems of plastic deformation, fracture or scale abrasion and the like basically do not exist after long-term use.

3. The cost is low. The steel tape is mainly composed of a shell, a tape, a brake, a tape hook, a lifting belt, a tape spring and an anti-falling protective sleeve box label, and is simple in material processing, easy to produce and low in cost.

4. Is convenient to carry. The steel tape is light in weight, small in volume, generally not more than 0.5kg, and convenient to carry.

5. The application range is wide. The steel tape can be used for measuring long and straight objects and curved objects, and the length of a narrow gap in a measuring space can be measured.

The steel tape shows unique advantages when in use, so that the steel tape is widely applied to the engineering fields of aerospace, automobiles, ships, rail transit vehicles, house buildings and the like.

The steel tape is because the work piece must be laminated completely and guarantee that initiating terminal and tail end can guarantee the measuring accuracy on the collinear in the use, the steel tape can cause the inconsistent phenomenon of measured data because of the personal habit difference of operating personnel when the measurement object exceeds a meter, the measuring deviation of steel tape tension when 5 ~ 6N about and tension when 10 ~ 11N about is 1 ~ 1.5mm, the measuring accuracy of steel tape has been surpassed far away, and still easily receive the phenomenon that gravity influences appear local flagging when the steel tape scale uses with ground is perpendicular, if the measurement object is the cylinder girth, the operator has the observation blind area, whether single operation is difficult to judge cylinder work piece back steel tape has been in the state of straining not flagging, if the tape is local flagging, the size of measuring is far more than actual size and the deviation is great.

The two conditions all can cause the measured data inaccurate, according to field observation, the biggest error is 5mm when using the steel tape measure circumference, and this has very big negative effect to on-the-spot production and technical management and control. Firstly, the measurement deviation is large, the change rule of the processing dimension of each step is difficult to control, and the process technology is unstable. For example, the welding shrinkage is obtained by measuring the accumulated mass data of the sizes of the workpiece before and after welding, and then the welding shrinkage is obtained, and a stable and reliable process scheme is formulated according to the change rule. In addition, if the measurement deviation of the blanking size is too large, the produced part needs to be reworked, and if the measurement deviation of the blanking size is too small, the workpiece can only be degraded for use or scrapped, so that the resource waste and the production cost increase are caused.

Disclosure of Invention

The invention aims to provide a device capable of giving a tension alarm, which can detect the tension of a steel tape in the measurement process in real time, prompt the real-time state of the steel tape of an operator, ensure that the operator can judge whether the tension of the steel tape is measured under the tension set by the process according to the judgment, and ensure the consistency of the tension in the reading process.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a permanent pulling force curve length measuring device, includes the chi strip and connects the pulling force controller at a chi strip tip, when measuring with this measuring device, concrete process is:

s1, initializing and setting the tension of the ruler strip through the tension controller;

and S2, fixing the position of the tension controller during measurement, pulling the ruler strip, and recording the current data of the ruler strip when the tension controller performs signal prompt.

In the technical scheme, the signal prompt is divided into two-stage prompt, when the tension of the ruler strip is consistent with the set value of the tension controller, the first-stage prompt is carried out, when the tension of the ruler strip is greater than the tension controller, the two-stage prompt is carried out, and the current tension of the ruler strip needs to be reduced during the two-stage prompt.

In the technical scheme, the surface of the ruler strip, which is in contact with the measured object, is a rough surface.

In the above technical solution, the rough surface is a magnetic frosted surface formed by a plurality of magnetic particles.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

install tension controller on the frock, increase tension alarm device, realize the pulling force real time monitoring and the warning of steel tape measure in measurement process, reduce artificial control factor, adopt in addition that the surface is crude and have magnetic chi strip and effectively alleviate the flagging problem when vertical use, guarantee the uniformity and the degree of accuracy of different operator measuring results at different times.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the tension controller of the present construction;

wherein: 1. the device comprises a tension controller, 1-1 of a tension setting button, 1-2 of a tension controller switch, 1-3 of a tension adjusting button, 1-4 of a tension adjusting button, 1-5 of a tension digital display screen, 2 of a magnetic frosting surface ruler strip, 3 of a ruler box.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

As shown in fig. 1, the present embodiment comprises a tension control device 1, the tension control device 1 is fixed with one end of a tape 2 by a screw, and the other part of the tape 2 is arranged in a tape case 3.

The tension control device 1 is provided with a tension setting button 1-1, a tension controller switch 1-2, tension adjusting buttons 1-3 and 1-4 and a tension digital display screen 1-5. The tension setting button 1-1 can set different measuring tensions according to the process regulation of the measured object, and the set tension value is adjusted through the tension adjusting buttons 1-3 and 1-4.

One surface of the tape 2 adopts a frosted surface consisting of magnetic particles, and when long-distance measurement is carried out, the frosted surface of the tape 2 is in contact with the surface of an object to be measured, so that the friction force between the tape and the object can be increased, and the problem of sag of the tape in the measurement process is effectively reduced.

When the tension reaches the preset tension value, an alarm device of the tension control system is triggered to prompt the operator to read the current tape measure.

In the measurement process, if the operator's pulling force is too big, alarm device changes the cue signal, reminds the operator that the pulling force is too big and should suitably adjust the tensioning force according to digital display screen display pulling force, waits that the alarm device cue sound turns into again and triggers behind the cue signal of pulling force alarm device for the first time the operator can carry out the reading.

The tension controller in the embodiment ensures that the tension when measuring the reading is basically stable through the operation mode, so that part of human control factors are eliminated, the uniformity when different operators measure the same object is ensured, and the accuracy of the measured data is improved.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.