CN209927147U

CN209927147U - Manual formula level bar quick calibration device

Info

Publication number: CN209927147U
Application number: CN201920782631.1U
Authority: CN
Inventors: 张改革; 赤橙; 张超; 李维娜; 梁辰; 徐守品
Original assignee: Xuchang Quality And Technical Supervision Inspection And Testing Center
Current assignee: Xuchang Quality And Technical Supervision Inspection And Testing Center
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-01-10
Anticipated expiration: 2029-05-28

Abstract

The utility model discloses a manual formula level bar quick calibration device belongs to measurement apparatus technical field, including base and I shape calibration reference ruler, be fixed with the left socle at the base left end, be fixed with climbing mechanism at the base right-hand member, climbing mechanism includes the roof, rotates between roof and base right-hand member and is connected with the power lead screw of vertical setting, fixedly connected with the guide post of vertical setting, the top of power lead screw stretches out the roof top and installs rotatory handle, and threaded connection has the slider on the power lead screw, and slider and guide post sliding connection are equipped with the support arm that stretches out left on the slider; the left end of the I-shaped calibration reference ruler is hinged to the left support, the right end of the I-shaped calibration reference ruler is placed on the support arm, a connecting seat extending leftwards is arranged on the top plate, and a displacement sensor for detecting the lifting height of the I-shaped calibration reference ruler is fixed on the connecting seat; the whole operation is fast and simple, and the method is suitable for fast and manually detecting and calibrating the level bar.

Description

Manual formula level bar quick calibration device

Technical Field

The utility model belongs to the technical field of the measurement utensil, in particular to quick calibrating device of manual formula level bar.

Background

The level bar is a measuring instrument which uses the principle of liquid level to directly display the angular displacement by a level bubble to measure the deviation degree of the measured surface relative to the horizontal position, the vertical position and the inclined position. In order to ensure the quality and quantity transmission accuracy of the level during the manufacturing and using processes, a third party calibration is needed to be carried out on a level meter and then used, JJF1085-2002 level calibration specification, and calibration regulations are provided for the flatness of a working surface of the level, indication errors of a linear scale, zero errors, division value errors and the like, only specific calibration items and requirements are given, no specific calibration device is given, and various calibration devices exist in actual inspection.

For example, chinese patent publication No. 103528597a discloses a method and an apparatus for calibrating a level, in which an optical index head and a jig are used as a calibrator, and calibration of zero position errors and index value errors of horizontal position bubbles, vertical position bubbles, and 45 ° position bubbles of the level can be completed by one-time chucking. Chinese patent with publication number 205642396U discloses a high accuracy level bar calibrating installation based on sine theorem, it is with horizontal position, 90 positions, 45 positions, the collection of line chi indicating value and division value precision calibration work is accomplished on one set of equipment, thereby the live time of its locating lever and locating plate has been of a specified duration can have the error and has reduced its practicality, can only calibrate to the level bar of fixed length, need make a round trip to operate locating lever and locating plate operating procedure loaded down with trivial details moreover in the calibration process.

Disclosure of Invention

The utility model aims to provide a manual type level bar quick calibration device; the technical scheme adopted for achieving the purpose is as follows:

a manual type level ruler quick calibration device comprises a base and an I-shaped calibration reference ruler, wherein a left support is fixed at the left end of the base, a jacking mechanism is fixed at the right end of the base and comprises a top plate, a vertically-arranged power screw rod and a vertically-arranged guide post are rotatably connected between the top plate and the right end of the base, the top of the power screw rod extends out of the upper part of the top plate and is provided with a rotating handle, a sliding block is in threaded connection with the power screw rod and is in sliding connection with the guide post, and a support arm extending out to the left is arranged on the sliding block; the left end of the I-shaped calibration standard ruler is hinged to the left support, the right end of the I-shaped calibration standard ruler is placed on the support arm, the top plate is provided with a connecting seat extending leftwards, and a displacement sensor used for detecting the lifting height of the I-shaped calibration standard ruler is fixed on the connecting seat.

Preferably, the top surface of the I-shaped calibration standard ruler is provided with two side positioning pins and an end surface positioning pin which are arranged side by side, the two side positioning pins are distributed side by side from left to right, and the end surface positioning pin is positioned at the left end of the side positioning pin.

Preferably, the tail end of the supporting arm is rotatably connected with a roller, a wedge-shaped rolling groove arranged in the left-right direction is formed in the bottom of the I-shaped calibration standard ruler, and the roller is located in the wedge-shaped rolling groove.

Preferably, the displacement sensor is a mechanical dial indicator or a digital display dial indicator.

Preferably, the connecting seat is connected with the top plate in a front-back sliding mode, and a fastening bolt used for fastening the connecting seat is arranged on the connecting seat.

Preferably, four corners of the bottom of the base are provided with rubber foot pads.

Preferably, an equipment housing is assembled on the base, and the top of the I-shaped calibration scale, the displacement sensor and the rotating handle extend out of the top of the equipment housing.

The utility model discloses the beneficial effect who has does:

(1) the quick manual lifting of the I-shaped calibration reference ruler is realized through the arrangement of the jacking mechanism;

(2) the I-shaped calibration reference ruler is longer than the horizontal ruler to be detected, and when the I-shaped calibration reference ruler is lifted at the same angle, the end part of the I-shaped calibration reference ruler is lifted for a larger distance, so that the precision requirement on a jacking mechanism is reduced, namely the integral detection precision is improved;

(3) rolling friction is formed between the bottom of the I-shaped calibration standard ruler and the tail end of the supporting arm, so that the resistance lifting process is greatly reduced, and the stability and smoothness are improved; on the other hand, as the roller is positioned in the wedge-shaped rolling groove, the I-shaped calibration reference ruler cannot be inclined in the lifting process, so that the measurement precision and accuracy are ensured; the connecting seat is connected with the top plate in a front-back sliding manner, so that the fine adjustment of the displacement sensor is realized;

(4) the utility model discloses the whole operation is swift simple, relatively is fit for carrying out quick manual detection calibration to the level bar.

Drawings

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

fig. 2 is a schematic view of the internal structure of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, a manual quick calibrating device for a level, comprises a base 7 and an i-shaped calibrating reference ruler 3, wherein a left support 8 is fixed at the left end of the base 7, a jacking mechanism 4 is fixed at the right end of the base 7, the jacking mechanism 4 comprises a top plate 44, a vertically arranged power screw 45 and a vertically arranged guide post 47 are rotatably connected between the top plate 44 and the right end of the base 7, the top of the power screw 45 extends out of the upper part of the top plate 44 and is provided with a rotating handle 43, a slide block 46 is in threaded connection with the power screw 45, the slide block 46 is in sliding connection with the guide post 47, and a support arm 48 extending out to the left is arranged on the slide block 46; the left end of the I-shaped calibration standard ruler 3 is hinged to the left support 8 through the precision rotating shaft 9, the right end of the I-shaped calibration standard ruler 3 is placed on the support arm 48, the top plate 44 is provided with a connecting seat 42 extending leftwards, and the connecting seat 42 is fixedly provided with a displacement sensor 41 used for detecting the lifting height of the I-shaped calibration standard ruler 3.

In the using process, the lifting height of the right end of the I-shaped calibration reference ruler 3 is smaller, the I-shaped calibration reference ruler 3 to be detected cannot slide under ordinary conditions, in order to further improve the measurement accuracy, two side positioning pins 11 and one end positioning pin 10 are arranged on the top surface of the I-shaped calibration reference ruler 3 side by side, the two side positioning pins 11 are distributed side by side left and right, and the end positioning pin 10 is positioned at the left end of the side positioning pin 11; the side positioning pin 11 and the end surface positioning pin 10 are correspondingly inserted into the side pin hole 2 and the end surface pin hole 1, and the taking and the placing are quick and convenient.

Simultaneously, the tail end of the supporting arm 48 is rotatably connected with a roller 49, a wedge-shaped rolling groove arranged along the left and right directions is formed in the bottom of the I-shaped calibrating reference ruler 3, the roller 49 is located in the wedge-shaped rolling groove, so that rolling friction is formed between the tail end of the supporting arm 48 and the I-shaped calibrating reference ruler 3, the resistance lifting process is greatly reduced, the stability and smoothness are improved, and on the other hand, the roller 49 is located in the wedge-shaped rolling groove, so that the inclination of the I-shaped calibrating reference ruler 3 can not occur in the lifting process, and the measuring precision and the accuracy are guaranteed.

The displacement sensor 41 can be a mechanical dial indicator or a digital dial indicator, in order to enable the displacement sensor 41 to be slightly adjusted in the front-back direction, the connecting seat 42 is connected with the top plate 44 in a front-back sliding mode, and a fastening bolt used for fastening the connecting seat is arranged on the connecting seat 44.

Finally, four corners of the bottom of the base 7 are provided with rubber pads 5; an equipment housing 6 is fitted on the base 7, and the top of the i-shaped calibration scale 3, the displacement sensor 41 and the rotating handle 43 extend out of the top of the equipment housing 6.

The utility model discloses when using, at first will wait to detect the level bar and put on I shape calibration scale 3, utilize two side locating pins 11 side by side and a terminal surface locating pin 10 to fix a position, slowly rotate rotatory handle 43, let the level bubble of level bar be located in the centre, the 41 readings of displacement sensor who will adopt the digital display percentage table return to zero, just reverse rotation rotatory handle 43, let I shape calibration scale 3 rise symmetrically, descend several standard heights, read the position and the digital display percentage table reading of level bubble when every position department, convert digital display percentage table reading value into the inclination angle value of I shape calibration scale 3, the reading of contrast level bubble calculates the indicating value error of level bar at last, zero error and division value error.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A manual type quick calibrating device for a level bar is characterized by comprising a base and an I-shaped calibrating reference ruler, wherein a left support is fixed at the left end of the base, a jacking mechanism is fixed at the right end of the base and comprises a top plate, a vertically-arranged power screw rod and a vertically-arranged guide post are rotatably connected between the top plate and the right end of the base, the top of the power screw rod extends out of the upper part of the top plate and is provided with a rotating handle, a sliding block is in threaded connection with the power screw rod and is in sliding connection with the guide post, and a supporting arm extending out leftwards is arranged on the sliding block; the left end of the I-shaped calibration standard ruler is hinged to the left support, the right end of the I-shaped calibration standard ruler is placed on the support arm, the top plate is provided with a connecting seat extending leftwards, and a displacement sensor used for detecting the lifting height of the I-shaped calibration standard ruler is fixed on the connecting seat.

2. The manual type level ruler quick calibration device according to claim 1, wherein two side positioning pins and one end positioning pin are arranged on the top surface of the I-shaped calibration standard ruler side by side, the two side positioning pins are distributed side by side from left to right, and the end positioning pin is located at the left end of the side positioning pin.

3. The manual quick calibration device for the level according to claim 1, wherein a roller is rotatably connected to the end of the support arm, and a wedge-shaped rolling groove is formed in the bottom of the i-shaped calibration standard in the left-right direction, and the roller is located in the wedge-shaped rolling groove.

4. A manual quick calibration device for level according to claim 1, characterized in that the displacement sensor is a mechanical dial indicator or a digital display dial indicator.

5. A manual quick calibration device for a level according to any one of claims 1 to 4, wherein the connecting base is connected with the top plate in a sliding manner, and a fastening bolt for fastening the connecting base is provided on the connecting base.

6. A manual quick calibration device for level according to any of claims 1 to 4, characterized in that rubber feet are provided at the four corners of the bottom of the base.

7. A manual quick calibration device for level according to any of claims 1 to 4, characterized in that an equipment cover is fitted on the base, and the top of the I-shaped calibration standard, the displacement sensor and the turning handle extend out of the top of the equipment cover.