CN209927147U - A manual level quick calibration device - Google Patents

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

A manual level quick calibration device

technical field

The utility model belongs to the technical field of measuring instruments, in particular to a manual level quick calibration device.

Background technique

The spirit level is a measuring instrument that uses the principle of liquid level level to directly display the angular displacement of the level bubble to measure the deviation of the measured surface relative to the horizontal position, vertical position and inclined position. In order to ensure the quality of the spirit level and the accuracy of the value transfer during the manufacturing and use process, it is necessary to use the third-party calibration of the spirit level measuring instrument. The calibration regulations are made for the degree, the indication error of the line ruler, the zero position error and the division value error, etc., but only specific calibration items and requirements are given, and no specific calibration device is given. In the actual inspection, there are many A calibration device.

For example, Chinese Patent Publication No. 103528597A discloses a method for calibrating a spirit level and its calibration tool, which uses an optical indexing head and a fixture as a calibrator, and can complete the calibration of blisters, lead, etc. The calibration of the zero position error and the graduation value error of the vertical position blisters and the 45° position blisters has certain progress, but the operation steps are cumbersome, and the accuracy of the optical indexing head and fixture is not high enough. The Chinese patent with the announcement number 205642396U discloses a high-precision level calibration device based on the sine theorem, which integrates the horizontal position, 90° position, 45° position, line ruler indication value and graduation value accuracy calibration work together. It is completed on the set of equipment, but the positioning rod and positioning plate will have errors after a long time of use, which will reduce its practicality. It can only be calibrated for a fixed-length level, and the positioning rod and positioning need to be operated back and forth during the calibration process. Board operation steps are cumbersome.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a kind of manual spirit level quick calibration device; The technical scheme adopted in order to achieve the above-mentioned purpose is:

A manual level quick calibration device, comprising a base and an I-shaped calibration reference ruler, a left support is fixed at the left end of the base, a jacking mechanism is fixed at the right end of the base, the jacking mechanism includes a top plate, and the top plate and the base A vertically arranged power screw is rotatably connected between the right ends, and a vertically arranged guide column is fixedly connected. The slider is slidably connected with the guide column, and the slider is provided with a support arm extending to the left; the left end of the I-shaped calibration reference ruler is hinged on the left support, and the right end of the I-shaped calibration reference ruler is placed On the support arm, the top plate is provided with a connecting seat extending to the left, and a displacement sensor for detecting the lifting height of the I-shaped calibration reference ruler is fixed on the connecting seat.

Preferably, two side locating pins and one end surface locating pin are arranged on the top surface of the I-shaped calibration reference ruler.

Preferably, a roller is rotatably connected to the end of the support arm, and a wedge-shaped rolling groove is arranged along the left-right direction at the bottom of the I-shaped calibration reference 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 slidably connected to the top plate front and rear, and the connecting seat is provided with fastening bolts for fastening the connecting seat.

Preferably, rubber feet are provided at the four corners of the bottom of the base.

Preferably, an equipment casing is assembled on the base, and the top of the I-shaped calibration reference ruler, the displacement sensor and the rotating handle protrude from the top of the equipment casing.

The beneficial effects that the utility model has are:

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

(2) The I-shaped calibration reference ruler is longer than the level to be measured. When the same angle is lifted, the end of the I-shaped calibration reference ruler lifts a larger distance, thereby reducing the accuracy requirements for the jacking mechanism, that is, improving the overall detection accuracy;

(3) There is rolling friction between the bottom of the I-shaped calibration reference ruler and the end of the support arm, which greatly reduces the resistance and makes the lifting process more stable and smooth; on the other hand, since the roller is located in the wedge-shaped rolling groove, it is During the process, the I-shaped calibration reference ruler will not be inclined, which ensures the measurement accuracy and accuracy; the connecting seat is slidingly connected with the top plate before and after, so as to realize the micro-adjustment of the displacement sensor;

(4) The overall operation of the utility model is quick and simple, and is more suitable for quick manual detection and calibration of the level.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the internal structure of the utility model.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a manual level quick calibration device includes a base 7 and an I-shaped calibration reference ruler 3, a left support 8 is fixed at the left end of the base 7, and a jacking is fixed at the right end of the base 7 Mechanism 4, the jacking mechanism 4 includes a top plate 44, a vertically arranged power screw 45 is rotatably connected between the top plate 44 and the right end of the base 7, and a vertically arranged guide column 47 is fixedly connected. The top of 45 protrudes above the top plate 44 and is installed with a rotating handle 43. A slider 46 is threadedly connected to the power screw 45. The slider 46 is slidably connected to the guide column 47. The left end of the I-shaped calibration reference ruler 3 is hinged on the left support 8 through the precision rotating shaft 9, and the right end of the I-shaped calibration reference ruler 3 is placed on the support arm 48. The connecting seat 42 extending from the left is fixed on the connecting seat 42 with a displacement sensor 41 for detecting the lifting height of the I-shaped calibration reference ruler 3 .

During use, the height of the right end of the I-shaped calibration reference ruler 3 is relatively small. Generally, the I-shaped calibration reference ruler 3 to be tested will not slide. In order to further improve the measurement accuracy, the I-shaped calibration reference ruler 3 3. There are two side-by-side positioning pins 11 and one end-face positioning pin 10 on the top surface. The two side-side positioning pins 11 are distributed side by side. The end-face positioning pin 10 is located at the left end of the side positioning pin 11; The pin 10 is correspondingly inserted into the side pin hole 2 and the end surface pin hole 1, which is quick and convenient to pick and place.

At the same time, a roller 49 is rotatably connected to the end of the support arm 48, and a wedge-shaped rolling groove arranged in the left-right direction is provided at the bottom of the I-shaped calibration reference ruler 3. The roller 49 is located in the wedge-shaped rolling groove, so that the end of the support arm 48 and There is rolling friction between the I-shaped calibration reference rulers 3, which greatly reduces the resistance and makes the lifting process more stable and smooth. The reference ruler 3 will not tilt, which ensures the measurement precision and accuracy.

The displacement sensor 41 can choose a mechanical dial indicator or a digital dial indicator. In order to enable the displacement sensor 41 to be finely adjusted in the front and rear directions, the connecting seat 42 is slidably connected to the top plate 44 back and forth, and is on the connecting seat 44. There are fastening bolts for fastening the connection seat.

Finally, rubber feet 5 are provided at the bottom four corners of the base 7 ; an equipment cover 6 is assembled on the base 7 , and the top of the I-shaped calibration reference ruler 3 , the displacement sensor 41 and the rotating handle 43 protrude from the top of the equipment cover 6 .

When the utility model is in use, first place the level to be detected on the I-shaped calibration reference ruler 3, use two side-by-side positioning pins 11 and one end-face positioning pin 10 for positioning, slowly rotate the rotating handle 43, and let the level The level bubble of the ruler is located in the middle, the reading of the displacement sensor 41 using a digital dial indicator is reset to zero, and the rotary handle 43 is rotated forward and reversely, so that the I-shaped calibration reference ruler 3 is symmetrically raised and lowered by several standard heights. Read the position of the level bubble and the reading of the digital dial indicator at each position, convert the reading value of the digital dial indicator into the inclination angle value of the I-shaped calibration reference ruler 3, and finally compare the reading of the level bubble Calculate the indication error, zero error and division value error of the level ruler.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements to some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the embodiments of the present invention. and range.

Claims (7)

1. A manual level quick calibration device is characterized in that, comprising a base and an I-shaped calibration reference ruler, a left support is fixed at the left end of the base, and a jacking mechanism is fixed at the right end of the base, and the jacking mechanism includes The top plate, between the top plate and the right end of the base, is rotatably connected with a vertically arranged power screw, and is fixedly connected with a vertically arranged guide column. A slider is threaded on the bar, the slider is slidably connected with the guide column, and a support arm extending to the left is arranged on the slider; the left end of the I-shaped calibration reference ruler is hinged on the left support, and the I-shaped calibration reference ruler is hinged on the left support. The right end of the I-shaped calibration reference ruler is placed on the support arm, and the top plate is provided with a connection seat extending to the left, and a displacement sensor for detecting the lifting height of the I-shaped calibration reference ruler is fixed on the connection seat. 2. The manual level quick calibration device according to claim 1 is characterized in that, two side-by-side positioning pins and one end-face positioning pin are arranged on the top surface of the I-shaped calibration reference ruler, and the two side positioning pins are positioned side by side. The pins are distributed side by side, and the end face locating pin is located at the left end of the side locating pin. 3. The manual level quick calibration device according to claim 1 is characterized in that, a roller is rotatably connected at the end of the support arm, and a wedge-shaped rolling groove arranged along the left and right direction is provided at the bottom of the I-shaped calibration reference ruler, The rollers are located in the wedge-shaped rolling grooves. 4 . The manual level quick calibration device according to claim 1 , wherein the displacement sensor is a mechanical dial indicator or a digital display dial indicator. 5 . 5. The quick calibration device for a manual spirit level according to any one of claims 1 to 4, wherein the connecting seat is slidably connected to the top plate front and rear, and the connecting seat is provided with a fastener for fastening the connecting seat. Fasten bolts. 6. The manual level quick calibration device according to any one of claims 1 to 4, wherein rubber feet are provided at the four corners of the bottom of the base. 7. The quick calibration device for manual spirit level according to any one of claims 1 to 4, characterized in that a device casing is assembled on the base, the top of the I-shaped calibration reference ruler, a displacement sensor and a rotating handle Extends out of the top of the device enclosure.

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