CN209992338U - Automatic penetrometer - Google Patents
Automatic penetrometer Download PDFInfo
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- CN209992338U CN209992338U CN201920515894.6U CN201920515894U CN209992338U CN 209992338 U CN209992338 U CN 209992338U CN 201920515894 U CN201920515894 U CN 201920515894U CN 209992338 U CN209992338 U CN 209992338U
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Abstract
The utility model provides an automatic penetrometer, which comprises a base, a lifting device fixed on the base, a needle connecting rod connected with the lifting device, a standard needle, a needle loader and a distance measuring instrument, wherein the bottom of the needle loader is provided with a needle holder for fixing a preset position of the standard needle at the bottom of the needle connecting rod; the distance measuring instrument is used for detecting the vertical distance between the bottom of the main body of the lifting device and the surface of the sample to be measured. The utility model discloses an automatic penetrometer passes through the distancer and measures the distance between elevating gear initial position department and the sample to utilize the needle ware to confirm the needle point of standard needle and the distance between the elevating gear, thereby confirm the distance between the needle point of standard needle and the sample, according to this accurate control elevating gear drive standard needle decline, accomplish accurate to the needle. The automatic penetrometer is completely automatic in the needle aligning process, accurate in needle aligning, capable of effectively avoiding errors caused by manual operation and capable of improving the reliability of a measuring result.
Description
Technical Field
The utility model relates to a pitch needle penetration detects technical field, especially relates to an automatic needle penetration appearance.
Background
The penetration is a depth of a standard needle of a certain weight vertically penetrating a sample at a prescribed temperature and time, and the penetrometer is an instrument for measuring the penetration of asphalt. When measuring penetration, the needle tip needs to be firstly contacted with the surface of a sample, and the needle tip cannot be inserted into the sample, otherwise, the accuracy and the reliability of the measurement result are influenced.
Because the length specification of standard needle is different, is difficult to control the distance between the needle point of standard needle and the degree of penetration main part during direct mount, and present measuring equipment all needs manual needle to the needle after the installation standard needle. The manual needle alignment is not only low in efficiency, but also has large influence factors and large influence on the reliability of the measuring result. During the needle insertion process, either the needle tip is not in contact with the sample surface or the needle tip is already inserted into the sample surface, it is difficult to control to reach a critical state where the needle tip is just in contact with the sample.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to solving the above-described problems. It is an object of the present invention to provide an automatic penetrometer that solves any of the above problems. Specifically, the utility model provides a can be automatic accurate to the penetrometer of needle.
In order to solve the technical problem, the utility model provides an automatic penetrometer, which comprises a base, a lifting device fixed on the base, a needle connecting rod connected with the lifting device, a standard needle, a needle loader and a distance meter, wherein the bottom of the needle loader is provided with a needle holder for fixing the preset position of the standard needle at the bottom of the needle connecting rod; the distance measuring instrument is used for detecting the vertical distance between the bottom of the main body of the lifting device and the surface of the sample to be measured;
the automatic penetrometer further comprises a controller, the lifting device and the range finder are electrically connected with the controller, the controller receives the detection result of the range finder, calculates the stroke of the standard needle according to the detection result, and controls the starting, stopping and lifting operation of the lifting device.
The needle installing device is of an L-shaped structure and comprises a vertical rod, and one side of the needle support is fixedly connected with the bottom end of the vertical rod.
The needle holder is characterized in that a positioning hole is formed in the middle of the needle holder and used for placing a standard needle to be installed, and the central axis of the positioning hole is parallel to the vertical rod.
The vertical rod of the needle loader is of a telescopic structure, and scales are arranged on the vertical rod.
Wherein, the distancer is laser distancer.
Wherein, a top suction type connecting structure is arranged between the top end of the needle connecting rod and the bottom end of the lifting device.
The utility model provides an automatic penetrometer measures the distance between elevating gear initial position department and the sample through the distancer to utilize the needle ware to confirm the needle point of standard needle and the distance between the elevating gear, thereby confirm the distance between the needle point of standard needle and the sample, according to this accurate control elevating gear drive standard needle descends, accomplishes accurate to the needle. The automatic penetrometer is completely automatic in the needle aligning process, accurate in needle aligning, capable of effectively avoiding errors caused by manual operation and capable of improving the reliability of a measuring result.
Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.
Fig. 1 schematically shows a schematic structural view of an automatic penetrometer according to the invention;
fig. 2 schematically shows the installation of a standard needle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
In order to realize accurate needle alignment between a standard needle and a sample to be measured and avoid the influence on a detection result due to inaccurate needle alignment, the inventor adopts the combination of measurement and calculation to accurately measure the distance between the needle point of the standard needle and the surface of the sample to be measured, the distance is used as the stroke of the standard needle, and then the standard needle is controlled to descend according to the distance, so that the accurate needle alignment is completed, errors caused by manual operation are effectively avoided, and the reliability of the measurement result is improved. The distance between the needle point of the standard needle and the sample cannot be directly measured because different standard needles with different specifications are possibly adopted for different samples, for the purpose, the inventor selects the bottom end of the lifting device on the automatic penetrometer as a reference, respectively measures the distance from the needle point of the standard needle to the bottom of the lifting device after installation and the distance from the surface of the sample to be measured to the bottom of the lifting device, and calculates the difference value, namely the required descending stroke of the needle point of the standard needle during needle alignment. According to this stroke drive elevating gear drive needle connecting rod and standard needle decline to accomplish accurate aiming at, need not the staff and carry out artifical aiming at needle and naked eye discernment, effectively avoid the artifical error that brings, ensure the accuracy of aiming at the needle, provide the guarantee for follow-up measuring result's reliability.
The automatic penetrometer provided by the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of a specific embodiment of the automatic penetrometer of the present invention, fig. 2 is a schematic installation diagram of a standard needle in an embodiment, and fig. 1 and fig. 2 are comprehensively referred to. The needle holder 51 is arranged at the bottom of the needle installing device 5 and used for fixing the preset position of the standard needle 4 at the bottom of the needle connecting rod 3, namely the standard needle 4 with the preset specification for detection is installed, and meanwhile, the needle point height of the standard needle 4 is determined in the installation process, so that the stroke of the standard needle 4 in needle alignment is convenient to calculate. The distance measuring instrument 6 is used for detecting the vertical distance between the bottom of the main body of the lifting device 2 and the surface of the sample 10 to be measured, and then combining the position size (height distance) determined when the standard needle 4 is installed, so as to calculate the accurate stroke of the standard needle 4 during needle alignment.
Further, for improving the degree of automation to needle process and testing process, the utility model discloses an automatic penetrometer still includes controller 7, and elevating gear 2 and distancer 6 all are connected with controller 7 electricity, control its operation by controller 7 and open and stop. Specifically, the controller 7 can input data such as relevant data of a sample to be tested, specification of the selected standard needle 4, installation height position and the like, after the controller 7 receives the detection result of the distance meter 6, the controller calculates the stroke of the standard needle 4 by combining the pre-input relevant data of the standard needle 4 or the needle installing device 5 matched with the standard needle 4, controls the starting, stopping and lifting operation of the lifting device 2 according to the stroke, and completes automatic accurate needle alignment.
In practical application, needle holders 5 with corresponding fixed heights can be respectively arranged for standard needles 4 with different specifications, namely, the distance between the needle tip and the bottom of the main body of the lifting device 2 after the standard needle 4 with the specification is installed can be directly determined through the height of the needle holders 5. In this case, a comparison table of the types of the standard needles 4 of different specifications and the corresponding heights of the needle holders 5 (or the distance between the needle tips of the standard needles 4 and the bottom of the main body of the lifting device 2 after the standard needles 4 are installed by the needle holders 5) may be stored in the controller 7, so that in actual detection, after the specification of the standard needles 4 is selected, the controller 7 may automatically identify or select the distance between the needle tips of the standard needles 4 and the bottom of the main body of the lifting device 2 only after the specification of the selected standard needles 4 or the corresponding heights or serial numbers of the needle holders 5 are input in the controller 7, and perform subsequent stroke calculation according to the data.
In order to facilitate the determination of the distance between the installed needle point of the standard needle 4 and the bottom of the main body of the lifting device 2 according to the height of the needle loader 5, in the device of the present invention, the needle loader 5 is an L-shaped structure, including a vertical rod 52, and one side of the needle holder 51 is fixedly connected to the bottom end of the vertical rod 52.
Specifically, a positioning hole 510 is provided in the middle of the needle holder 51 for placing the standard needle 4 to be installed, and the central axis of the positioning hole 510 is parallel to the vertical rod 52. Meanwhile, no matter the positioning hole 510 is a counter bore or a through hole, it is only required to ensure that the bottom end of the positioning hole 510 (i.e., the needle point of the standard needle 4) is flush with the bottom end of the upright rod 52 or the vertical distance in the height direction is determined; for example, after the standard needle 4 is placed in the positioning hole 510, the needle point is 2mm or 5mm lower than the bottom end of the upright rod 52; for another example, the depth of the positioning hole 510 is smaller than the thickness of the needle holder 51 by a first predetermined distance, and the bottom end of the needle holder 51 is lower than or higher than (or can be flush with) the bottom end of the vertical rod 51 by a second predetermined distance. When the standard needle 4 is installed, the standard needle 4 is placed in the positioning hole 510, the top of the upright 52 is flush with the bottom of the main body of the lifting device 2, and the distance between the needle point of the standard needle 4 and the lifting device 2 can be directly (the bottom end of the positioning hole 510 is flush with the bottom end of the upright 52) or indirectly (the bottom end of the positioning hole 510 is not flush with the bottom end of the upright 52, but the vertical distance between the bottom end of the positioning hole 510 and the bottom end of the upright 52 is determined) only by the height of the.
It should be noted that the bottom end of the positioning hole 510 is a tapered structure, which is adapted to the shape of the needle tip of the standard needle 4, so as to ensure that the standard needle 4 is installed upright, and the distance between the needle tip and the bottom of the main body of the lifting device 2 is accurate.
In another exemplary embodiment, the upright 52 of the needle holder 5 can also be designed as a telescopic structure, and the upright 52 is provided with a scale. During installation and use, the standard needle 4 is supported to a height capable of being fixedly installed through the needle support 51 and is fixed with the bottom end of the needle connecting rod 3, then the vertical rod 52 is adjusted to stretch, and scales on the vertical rod 52, which are parallel to the bottom of the main body of the lifting device 2, are read, namely the vertical distance between the needle point of the standard needle 4 and the bottom of the main body of the lifting device 2 at the moment is used as a reference value for calculating the vertical distance between the needle point of the standard needle 4 and the surface of a sample to be measured.
The utility model discloses an among the automatic penetrometer, laser range finder can be chooseed for use to distancer 6. The laser distance measuring instrument is fixed at the bottom of the main body of the lifting device 2 and used for measuring the distance between the bottom of the main body of the lifting device 2 and the surface of the sample to be measured when the lifting device 2 is located at the initial height.
The distance measuring instrument 6 measures the distance between the position of the intersection of the descending track of the standard needle 4 and the surface of the sample to be measured and the bottom of the main body of the lifting device 2 in order to avoid measurement errors caused by needle precision errors due to deviation of measurement positions. Since the needle link 3 is used to fix and move the standard needle 4, the needle link 3 occupies a position right above the standard needle 4, and the distance meter 6 is located at one side of the needle link 3, i.e. with a certain deviation from the standard needle 4. And the end point to be measured by the distance measuring instrument 6 is the intersection point between the moving track of the standard needle 4 and the surface of the sample to be measured, so the measuring track of the distance measuring instrument 6 is an oblique line. Since the height position of the distance meter 6 during measurement is always at the initial height position along with the lifting device 2, the position of the distance meter 6 relative to the base 1 during measurement is unchanged, and the sample to be measured is placed on the base 1, the track oblique line inclination angle of the distance meter 6 during each measurement is determined, and the position of the distance meter 6 on the lifting device 2 is fixed, namely the distance of the distance meter relative to the bottom of the body of the lifting device 2 is determined, so that the vertical distance between the point of the surface of the sample to be measured, which is measured by the distance meter 6, and the bottom of the body of the lifting device 2 can be calculated through a trigonometric function and an addition and subtraction method. Specifically, the position parameter between the distance meter 6 and the bottom of the main body of the lifting device 2, the measurement track inclination angle of the distance meter 6, and other parameters can be stored in the controller 7, and the calculation process is also stored in the controller 7 in a programming manner, so that when the distance meter 6 measures the linear distance between the distance meter and the point to be measured on the surface of the sample to be measured, the controller 7 can automatically calculate the vertical distance between the point to be measured on the surface of the sample to be measured and the bottom of the main body of the lifting device 2, and then calculate the difference between the point to be measured on the surface of the sample to be measured and the bottom of the main body of the lifting device 2 according to the distance between the needle point of the standard needle 4 and the bottom of the main body of the lifting device 2 determined by the needle loader 5, so as to obtain the vertical distance between the needle point of. The controller 7 controls the lifting device 2 to descend according to the stroke, so that accurate needle alignment can be completed without manual operation.
In the present invention, a connection structure is provided between the top end of the needle link 3 and the bottom end of the lifting device 2. Among the automatic penetrometer of current, the connected mode of needle connecting rod mostly adopts the electro-magnet edgewise to block to lead to at the in-process of card, the needle connecting rod can vibrate to some extent, influences the equipment precision. And the utility model discloses in, set up the electro-magnet at the equipment top, effectively guarantee the accuracy of needle connecting rod in installation and use.
The above-described embodiments can be implemented individually or in various combinations, and such variations are within the scope of the present invention.
It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The above embodiments are merely for illustrating the technical solutions of the present invention and are not to be construed as limiting, and the present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that various modifications and equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all the modifications and equivalents should be covered by the scope of the claims of the present invention.
Claims (6)
1. An automatic penetrometer comprises a base (1), a lifting device (2) fixed on the base (1), a needle connecting rod (3) connected with the lifting device (2) and a standard needle (4), and is characterized by further comprising a needle loader (5) and a distance meter (6), wherein a needle holder (51) is arranged at the bottom of the needle loader (5) and used for fixing a preset position of the standard needle (4) at the bottom of the needle connecting rod (3); the distance measuring instrument (6) is used for detecting the vertical distance between the bottom of the main body of the lifting device (2) and the surface of the sample (10) to be measured;
the automatic penetration meter further comprises a controller (7), the lifting device (2) and the range finder (6) are electrically connected with the controller (7), the controller (7) receives a detection result of the range finder (6), the stroke of the standard needle (4) is calculated according to the detection result, and the lifting device (2) is controlled to start, stop and lift.
2. The automatic penetrometer as claimed in claim 1, characterized in that the needle holder (5) is of an L-shaped construction and comprises an upright (52), one side of the needle holder (51) being fixedly connected to the bottom end of the upright (52).
3. The automatic penetrometer as claimed in claim 2, characterized in that a positioning hole (510) is provided in the middle of the needle holder (51) for placing a standard needle (4) to be mounted, the central axis of the positioning hole (510) being parallel to the vertical rod (52).
4. The automatic penetrometer as claimed in claim 1, characterized in that the upright (52) of the needle loader (5) is of a telescopic construction and that the upright (52) is provided with a scale.
5. An automatic penetrometer as claimed in claim 1, characterized in that the distance meter (6) is a laser distance meter.
6. The automatic penetrometer as claimed in claim 1, characterized in that a top-suction type connecting structure is provided between the top end of the needle rod (3) and the bottom end of the lifting device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515894.6U CN209992338U (en) | 2019-04-16 | 2019-04-16 | Automatic penetrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515894.6U CN209992338U (en) | 2019-04-16 | 2019-04-16 | Automatic penetrometer |
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| Publication Number | Publication Date |
|---|---|
| CN209992338U true CN209992338U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920515894.6U Active CN209992338U (en) | 2019-04-16 | 2019-04-16 | Automatic penetrometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082262A (en) * | 2019-04-16 | 2019-08-02 | 交通运输部公路科学研究所 | A kind of automatic penetrometer and its to needle method |
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2019
- 2019-04-16 CN CN201920515894.6U patent/CN209992338U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082262A (en) * | 2019-04-16 | 2019-08-02 | 交通运输部公路科学研究所 | A kind of automatic penetrometer and its to needle method |
| CN110082262B (en) * | 2019-04-16 | 2024-05-10 | 交通运输部公路科学研究所 | Automatic needle penetration instrument and needle alignment method thereof |
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