CN211178364U - Measuring device for external dimension parameters of spiral rib steel bar - Google Patents

Abstract

The utility model proposes a measuring device for the external dimension parameters of the spiral rib steel bar, which comprises a base and a V-shaped bracket for supporting the spiral rib steel bar to be measured. A moving slider, the slider is provided with a distance sensor, and the distance sensor is radially opposite to the spiral rib steel bar to be measured. The movement of the slider drives the distance sensor to move radially along the spiral rib bar to be measured, and the distance sensor can measure the external dimensions of the spiral rib bar to be measured in real time, including the data of rib width, rib distance and rib height. The whole process does not require manual measurement , the measurement speed is fast, the precision is high, the human factor influence of traditional artificial vision detection is eliminated, and the detection stability is good.

Description

Measuring device for external dimension parameters of spiral rib steel bar

technical field

The utility model relates to the field of steel shape parameter detection, in particular to a device for measuring the shape size parameters of a spiral rib steel bar.

Background technique

In the prior art, the shape parameters of steel such as rebar and spiral rib steel usually include rib height, rib width and base circle, etc. For the measurement of steel shape parameters, there are usually contact measurement and non-contact measurement. Among them, most of them use vernier calipers, or hand-held tools such as pass-and-stop gauges for measuring the shape of products with a circular cross-section, such as the Chinese Patent Publication No. CN206192251U, which requires manual operation, and there are problems such as reading error, labor consumption, and long measurement time. At the same time, it adopts dual sensors, which is costly, and requires two sensors to be vertically aligned, which requires high precision of the mechanical structure. The typical non-contact measurement method is the image measurement method, which measures the shape parameters such as the outer diameter by measuring the projection of the steel. This method has problems such as projection error and high cost.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned defects in the prior art, the purpose of this utility model is to provide a measuring device for the external dimension parameters of the spiral rib steel bar, which does not require manual measurement, has fast measurement speed and high precision, and eliminates the influence of human subjective factors in traditional artificial visual detection. , the detection stability is good.

In order to achieve the above purpose of the present utility model, the present utility model provides a measuring device for the external dimension parameters of the spiral ribbed steel bar, comprising a base and a V-shaped bracket for supporting the spiral ribbed steel bar to be measured, the base is provided with a guide rail, the The guide rail is provided with a slider that can move axially along the guide rail, and a distance sensor is arranged on the slider, and the distance sensor is radially opposite to the spiral rib steel bar to be measured. The movement of the slider drives the distance sensor to move radially along the spiral rib bar to be tested, and the distance sensor can measure the external dimensions of the spiral rib bar to be tested in real time, including the data of rib width, rib distance and rib height. The whole process does not require manual measurement , the measurement speed is fast, the precision is high, the human factor influence of traditional artificial vision detection is eliminated, and the detection stability is good.

The preferred solution of the present application: the distance sensor is detachably connected to the slider, and different detection sensors may be required for different spiral rib bars to be tested. Through the detachable connection between the distance sensor and the slider, only the corresponding The detection sensor can realize the detection, and the versatility and applicability are strong.

The preferred solution of the present application: the distance sensor is located directly under the spiral rib steel bar to be measured, and the detection accuracy is high, and the space occupation of the entire measuring device is reduced at the same time, which is compact and concise.

The preferred solution of the present application: the base is provided with a liftable measuring base, and the guide rail is fixed on the measuring base. The distance to the distance sensor is different, and the distance sensor has high requirements for the measurement distance. If the measurement distance is not within the accurate range, the measurement data will be inaccurate. Therefore, the spiral rib steel bars of different diameters are connected to the distance sensor by raising and lowering the measurement base. The distance is adjusted to within the precise range of the distance sensor to make the measurement data more accurate.

The preferred solution of the present application: a support is fixed on the measurement base at both ends of the guide rail, a threaded screw and a servo motor driving the threaded screw are positioned between the two supports, and the slider is threadedly sleeved. On the threaded lead screw, the servo motor drives the threaded lead screw pair, and then drives the slider to move axially, with good stability and little influence on the measurement accuracy of the distance sensor.

The preferred solution of the present application: the measurement base is connected to a lift driver, the lift driver is connected to the controller, the distance sensor is connected to the controller, and sends to the controller the difference between the measurement base and the lower surface of the spiral rib steel bar to be measured. When the distance is within the range of the distance sensor, the controller controls the lift driver to stop driving the measurement base to move. This can quickly and accurately adjust the distance between the spiral rib steel bar to be tested and the distance sensor to be within the range of the distance sensor.

The beneficial effects of the utility model are as follows: the spiral rib steel bar dimension parameter measuring device adopts a single sensor, with low cost, low requirement on the precision of the mechanical structure, no need for manual measurement, high measurement speed and high precision, and eliminates the artificial detection of traditional artificial vision. Influenced by factors, the detection stability is good; the external dimension measurement can be carried out for the spiral rib steel bars of different diameters, and the versatility and applicability are strong.

Additional aspects and advantages of the invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

Fig. 1 is a three-dimensional structure schematic diagram of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a mechanical connection or an electrical connection, or it may be a The internal communication between the two elements may be directly connected or indirectly connected through an intermediate medium, and those of ordinary skill in the art can understand the specific meanings of the above terms according to specific circumstances.

As shown in FIG. 1, the present utility model provides a measuring device for the external dimension parameters of a spiral rib steel bar, which includes a base 1 and a V-shaped bracket 3 for supporting the spiral rib steel bar 2 to be measured. The base 1 is provided with a guide rail 4, the The guide rail 4 is provided with a sliding block 7 that can move axially along the guide rail 4 . The sliding block 7 is provided with a distance sensor 8 , and the distance sensor 8 and the spiral rib steel bar 2 to be measured are radially facing downward.

Through the movement of the slider 7, the distance sensor 8 is moved along the axial direction of the spiral rib steel bar 2 to be measured, and the distance sensor 8 can measure the external dimensions of the spiral rib steel bar 2 to be measured in real time, including the rib width, rib distance and rib height data, The whole process does not need manual measurement, the measurement speed is fast, the precision is high, the human factor influence of traditional artificial vision detection is eliminated, and the detection stability is good.

In order to realize the compactness and simplicity of the whole device, the distance sensor 8 is located directly under the spiral ribbed steel bar 2 to be tested, which reduces the space occupied by the entire measuring device, and at the same time, it is possible to realize the automatic measurement while the testing personnel perform other tasks for the spiral ribbed steel bar 2 to be tested. detection without interfering with each other. Of course, in practical applications, the distance sensor 8 can be arranged on the side, above, etc. of the spiral rib steel bar 2 to be measured.

In order to ensure that the device can effectively detect various diameters of spiral ribbed steel bars, the distance sensor 8 is detachably connected to the slider 7. In this example, a dovetail parallel to the axis of the spiral ribbed steel bar 2 to be measured is set on the top of the slider 7. groove or inverted trapezoidal groove or inverted T-shaped groove, and then the bottom of the distance sensor 8 is slidably fitted with it, and it is a transition fit, so that the distance sensor 8 only needs to be fitted with the groove on the slider 7 during use, and the adjustment ensures that the The spiral rib steel bar 2 can be measured radially facing each other. If the distance sensor 8 needs to be replaced, it can be done by manual replacement, which has strong versatility and adaptability.

At the same time, a liftable measuring base is provided on the base 1, and the guide rail 4 is fixed on the measuring base. And a support is fixed on the measuring base at both ends of the guide rail 4, a threaded screw 5 and a servo motor 6 that drives the threaded screw 5 to rotate are positioned between the two supports, and the slider 7 is threadedly sleeved on the screw. screw 5. The movement of the sliding block 7 is realized by the cooperation of the servo motor 6 and the threaded screw 5 , which is stable and reliable, and does not cause any influence on the detection of the distance sensor 8 .

The lifting mechanism of the measurement base can be directly driven by a lifting driver, or realized by means of mechanical stepping, etc. The lifting mechanism itself already belongs to the prior art and will not be repeated here.

When a lift driver is used, the measurement base is connected to the lift driver (not shown), the lift driver is connected to the controller, the controller controls the lift driver to drive the measurement base to move up and down, the distance sensor 8 is connected to the controller, and the distance sensor 8 is connected to the controller. The distance from the lower surface of the spiral ribbed steel bar 2 to be measured is sent. When the distance is within the range of the distance sensor 8, the controller controls the lift driver to stop driving the measurement base to move. The lift driver can be directly driven by an air cylinder, or the measurement base can be set on a mechanical lift mechanism (a vertical slide rail and a slider set on the slide rail that can slide up and down), and the motor is driven by the motor. The mechanical lifting mechanism moves up and down, thereby driving the measurement base to rise and fall. A grating ruler can also be set on the guide rail 4. Whenever the distance sensor 8 moves a grating distance, the controller controls the distance sensor 8 to collect data once, and can also drive the slider 7 to move through the stepping motor. After the stepper motor outputs a pulse, the controller controls the distance sensor 8 to collect data once, and the distance that the stepper motor drives the slider 7 to move under one pulse can be obtained through experiments. The controller is preferably, but not limited to, a microcontroller of the STM32F103 series, and the distance sensor 8 is preferably, but not limited to, a laser displacement sensor.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention. Variations, the scope of the present invention is defined by the claims and their equivalents.

Claims (6)

1. A device for measuring the dimensions of a spiral rib steel bar is characterized in that: it comprises a base (1) and a V-shaped bracket (3) for supporting the spiral rib steel bar (2) to be measured, and the base (1) is provided with a V-shaped bracket (3). There is a guide rail (4), the guide rail (4) is provided with a slider (7) that can move axially along the guide rail (4), the slider (7) is provided with a distance sensor (8), and the distance sensor (8) is radially opposite to the helical rib steel bar (2) to be tested. 2 . The device for measuring the external dimension parameters of a spiral rib steel bar according to claim 1 , wherein the distance sensor ( 8 ) is detachably connected to the slider ( 7 ). 3 . 3 . The device for measuring the external dimension parameters of a spiral rib steel bar according to claim 1 or 2 , wherein the distance sensor ( 8 ) is located directly below the spiral rib steel bar ( 2 ) to be measured. 4 . 4. The device for measuring the external dimension parameters of a spiral rib steel bar according to claim 3, characterized in that: the base (1) is provided with a measuring base that can be lifted and lowered, and the guide rail (4) is fixed on the measuring base. on the base. 5. The device for measuring the external dimension parameters of a spiral rib steel bar according to claim 4, wherein a support is fixed on the measuring base at both ends of the guide rail (4), and a thread is positioned between the two supports. A lead screw (5) and a servo motor (6) driving the threaded lead screw (5) to rotate, the slider (7) is threadedly sleeved on the threaded lead screw (5). 6. A device for measuring parameters of spiral ribbed steel bar dimensions according to claim 4, characterized in that: the measurement base is connected to a lift driver, the lift driver is connected to a controller, and the distance sensor (8) is connected to a The controller is connected, and sends the distance between it and the lower surface of the spiral rib steel bar (2) to be measured to the controller, when the distance is within the range of the distance sensor (8), the controller controls the lift driver to stop driving The measurement base moves.

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