CN211504379U - Weighing apparatus calibrating device - Google Patents

Weighing apparatus calibrating device Download PDF

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Publication number
CN211504379U
CN211504379U CN201922152607.2U CN201922152607U CN211504379U CN 211504379 U CN211504379 U CN 211504379U CN 201922152607 U CN201922152607 U CN 201922152607U CN 211504379 U CN211504379 U CN 211504379U
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China
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movable
driving force
weighing
force
guide rail
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CN201922152607.2U
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Chinese (zh)
Inventor
王宝超
南光熙
管鑫
顾坚
刘江涛
杨焕
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CHINA PRODUCTIVITY CENTER FOR MACHINERY
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CHINA PRODUCTIVITY CENTER FOR MACHINERY
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Abstract

A scale calibrating apparatus, comprising: a base configured to be detachably fixed to a horizontal ground; a power loading device configured to provide a first driving force in a horizontal direction; a first movable member connected to the power loading means and configured to be movable in a horizontal direction by a first driving force; a force-increasing member connected to the first movable member; a second movable member connected to the force increasing member and configured to be driven by the force increasing member to move in the vertical direction when the first movable member moves in the horizontal direction and to output a second driving force in the vertical direction; and a standard metering member detachably attached to an end of the second movable member remote from the power increasing member, and configured to measure the second driving force.

Description

Weighing apparatus calibrating device
Technical Field
The disclosure relates to the technical field of detection, in particular to a weighing apparatus calibrating device and a weighing apparatus calibrating method.
Background
The fixed electronic weighing apparatus is a weighing and metering apparatus with the most mature technology in the world at present, belongs to a metering apparatus with large and wide range, is widely applied to the metering of various load-carrying vehicles and goods in metallurgy, chemical engineering, railways, ports and industrial and mining enterprises, is used for the process control of weighing processes in trade settlement and production processes, and is ideal metering equipment for improving the modernization level of weighing and metering of enterprises. For example, the truck scale is the most commonly used main weighing device for measuring goods at present, is widely applied to law enforcement for transfinitions, trade settlement, product quality control of industrial and mining enterprises and the like, belongs to a measuring instrument for national mandatory verification, and directly influences the seriousness of law enforcement, the fairness of trade settlement, the production process control of industrial and mining enterprises, the product quality and the like.
The fixed electronic weighing apparatus has the working principle that a weighed object or a truck is placed on a weighing platform, the weighing platform transfers the gravity to a swing support (a steel ball, a pressure head and the like) under the action of the gravity, so that an elastic body of a weighing sensor is deformed, a strain foil bridge attached to the elastic body loses balance, an electric signal in direct proportion to the weight value is output, the signal is amplified by a linear amplifier and then converted into a digital signal through A/D (analog/digital) conversion, and then the microprocessor of the instrument directly displays the weight value after processing the signal. The fixed electronic weighing apparatus must be verified before being put into practical use to determine the accuracy grade, and in addition, the large weighing apparatus needs to be verified again after being used for a period of time or after being replaced, so as to ensure the accuracy grade, and the fixed electronic weighing apparatus can be adjusted correspondingly to meet the accuracy requirement.
The traditional automobile scale measuring method adopts standard weights to measure according to JJG907-2003 dynamic automobile scale standard, but with the wide application of large-range automobile scales, particularly the automobile scales with the measuring range of more than 100 tons, the calibrating method has the problems of high cost, low efficiency, environmental pollution, poor safety and the like.
SUMMERY OF THE UTILITY MODEL
Some embodiments of the present disclosure provide a calibrating apparatus, including: a base configured to be detachably fixed to a horizontal ground; a power loading device configured to provide a first driving force in a horizontal direction; a first movable member connected to the power loading means and configured to be movable in a horizontal direction by a first driving force; a force-increasing member connected to the first movable member; a second movable member connected to the force increasing member and configured to be driven by the force increasing member to move in the vertical direction when the first movable member moves in the horizontal direction and to output a second driving force in the vertical direction; and a standard metering member detachably attached to an end of the second movable member remote from the power increasing member, and configured to measure the second driving force.
In some embodiments, the force increasing means comprises a hinge rod, which is a rigid bar-shaped rod comprising a first end and a second end, the first end being hinged with the first movable means based on a first hinge axis, the second end being hinged with the second movable means based on a second hinge axis.
In some embodiments, the scale verification apparatus further comprises: a first guide rail extending in a horizontal direction; the first roller is pivoted with the first movable part based on the first rotating shaft and is matched and clamped with the first guide rail; a second guide rail extending in a vertical direction; and the second roller is pivoted with the second movable part based on the second rotating shaft and is matched and clamped with the second guide rail.
In some embodiments, the scale verification apparatus further comprises: the first guide rail extends along the horizontal direction and is matched and clamped with the first movable component, so that the first movable component and the first guide rail are connected in a sliding mode; and a second guide rail extending in the vertical direction, and matched and clamped with the second movable component, so that the second movable component and the second guide rail are connected in a sliding mode.
In some embodiments, the second driving force has the following relationship with the first driving force: n ═ F/tan (arcsin (a/b)) where F denotes a first driving force; n represents a second driving force; a represents a distance in a horizontal direction between the first hinge shaft and the second hinge shaft; b denotes a distance between the first hinge shaft and the second hinge shaft.
In some embodiments, the scale verification apparatus further comprises: a resilient means provided on a side of the gauge parts remote from the second movable part, the resilient means comprising: a guide sleeve configured to position an axial extension direction of the guide sleeve in a vertical direction when the elastic device is in use; a spring disposed within the guide sleeve, including a fixed end fixed relative to the guide sleeve and a movable end opposite the fixed end, the spring configured to be compressible or extendable along the axial extension direction; and a pressing piece connected with the moving end of the spring and configured to abut against the standard metering component.
In some embodiments, the wafer is removably coupled to the master metering unit.
In some embodiments, the power loading means comprises a motor that drives the first movable member via a lead screw.
Some embodiments of the present disclosure provide a method for calibrating a weighing apparatus, including: fixing the weighing apparatus calibrating device on a platform close to the weighing apparatus to be measured; basically aligning the standard metering component to a metering component to be measured of the weighing apparatus to be measured; starting a power loading device to drive the first movable component to move along a first direction; reading a standard value indicated by a standard metering component and a measured value indicated by the to-be-measured metering component; and comparing the standard value and the measured value.
In some embodiments, the scale verification method further comprises: if the absolute value of the difference value between the standard value and the measured value is smaller than or equal to a first threshold value, judging that the metering component to be measured is qualified; and if the absolute value of the difference value between the standard value and the measured value is larger than the first threshold value, judging that the metering component to be measured is unqualified.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it should be understood that the drawings described below relate only to some embodiments of the present disclosure, and not to limit the present disclosure, wherein:
FIG. 1 illustrates a schematic structural diagram of a scale verification apparatus according to some embodiments of the present disclosure;
FIG. 2 illustrates a top view of a scale under test according to some embodiments of the present disclosure;
FIG. 3 shows a functional diagram of a force-increasing member (for example a hinge rod);
FIG. 4 illustrates a schematic structural view of a resilient device according to some embodiments of the present disclosure;
FIG. 5 illustrates a schematic structural diagram of a scale verification apparatus according to some embodiments of the present disclosure;
FIG. 6 illustrates a connection of a power loading device to a first movable member according to some embodiments of the present disclosure; and
FIG. 7 illustrates a flow chart of a method of calibrating a scale according to some embodiments of the present disclosure.
Detailed Description
To more clearly illustrate the objects, aspects and advantages of the present disclosure, embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the following description of the embodiments is intended to illustrate and explain the general concepts of the disclosure and should not be taken as limiting the disclosure. In the specification and drawings, the same or similar reference numerals refer to the same or similar parts or components. The figures are not necessarily to scale and certain well-known components and structures may be omitted from the figures for clarity.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "a" or "an" does not exclude a plurality. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top" or "bottom", etc. are used merely to indicate relative positional relationships, which may change when the absolute position of the object being described changes. When an element is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
The present disclosure provides a weighing apparatus calibrating device, the weighing apparatus calibrating device includes: the device comprises a power loading device, a first movable part, a force increasing part, a second movable part and a standard metering part. Wherein the power loading device is configured to provide a first driving force in a first direction; the first movable component is connected to the power loading device and is configured to be movable in a first direction under the driving of a first driving force; a force-increasing member connected to the first movable member; the second movable component is connected with the force increasing component and is configured to be driven by the force increasing component to move along the second direction when the first movable component moves along the first direction and output a second driving force along the second direction; and the standard metering component is detachably connected to the end part, far away from the power-increasing component, of the second movable component and is configured to measure the second driving force.
The weighing apparatus calibrating device provided by the disclosure does not adopt standard weights, but directly provides a first driving force along a first direction, such as a horizontal direction, by the power loading device, and converts the first driving force into a second driving force along a second direction, such as a vertical direction, by the force increasing component. And testing whether the metering component to be tested of the weighing apparatus to be tested is qualified or not by loading the second driving force on the weighing apparatus to be tested and comparing the standard value shown by the standard metering component with the measured value shown by the metering component to be tested of the weighing apparatus to be tested. Compared with the existing weighing apparatus calibrating device, the weighing apparatus calibrating device provided by the disclosure has the advantages that the structure is simple, the calibrating work efficiency and the calibrating safety can be greatly improved, and the cost is saved.
Some embodiments of the present disclosure provide a weighing apparatus calibrating device, and fig. 1 shows a schematic structural diagram of a weighing apparatus calibrating device according to some embodiments of the present disclosure. As shown in fig. 1, the scale verification apparatus 100 includes: the power loading device 10, the first movable member 20, the force increasing member 30, the second movable member 40, and the standard metering member 50. The power loading device 10 is configured to provide a first driving force F in a first direction X, e.g., a horizontal direction, and the power loading device 10 is, e.g., a motor. The first movable member 20 is connected to the power loading device 10, and the first movable member 20 can move along the first direction X under the driving of the first driving force F, as shown in fig. 1, and the first movable member 20 is, for example, a rigid rod. The force increasing member 30, for example a hinge rod, is connected to the first movable member 20, the second movable member 40, for example a rigid rod, is connected to the force increasing member 30, and the second movable member 40 is configured to be driven by the force increasing member 30 to move in a second direction Y, for example a vertical direction, when the first movable member 20 moves in the first direction X and to output a second driving force N in the second direction Y. A standard gauge member 50, for example a standard pressure sensor, is detachably connected to an end of the second movable member 40 remote from the force increasing member 30, the standard gauge member 50 being configured to measure the second driving force N.
Fig. 1 also shows a weighing apparatus 200 to be measured, for example a truck scale. The apparatus 200 to be measured comprises a measuring platform 201 and at least one measuring member 202, for example a pressure sensor, the at least one measuring member 202 being located below the measuring platform 201, the measuring surface, i.e. the upper surface, of the measuring platform 201 being a generally horizontal surface. Fig. 2 illustrates a top view of a weighing apparatus 200 under test according to some embodiments of the present disclosure, as shown in fig. 2, a measuring platform 201 of the weighing apparatus 200 under test is rectangular, for example, and four metering components 202 are respectively disposed at four corners of the measuring platform 201. While the apparatus 200 to be measured shown in fig. 2 includes four metering members 202, in other embodiments, the number of pressure sensors 202 may be other values, such as six, eight, etc. The weight of the load, for example, an automobile, measured by the weighing apparatus 200 to be measured is obtained by adding the values measured by the respective measuring units 202.
In this embodiment, the weighing apparatus calibrating device 100 does not use standard weights, but directly provides the first driving force F in the first direction X, e.g. the horizontal direction, by the power loading device 10, and converts the first driving force F into the second driving force N in the second direction Y, e.g. the vertical direction, by the force increasing member 30. The weighing apparatus under test 202 of the weighing apparatus under test is qualified by loading the second driving force N to the weighing apparatus under test 200, for example, a car scale, and comparing the standard value shown by the standard weighing part 50 and the measured value shown by the weighing apparatus under test 202 of the weighing apparatus under test 200.
In some embodiments, as shown in fig. 1, the force-increasing member 30 is a rigid bar-shaped rod, and includes a first end 31 and a second end 32, the first end 31 being hinged to the end of the first movable member 20 away from the power loading device 10 based on a first hinge axis 21, and the second end 32 being hinged to the end of the second movable member 40 close to the force-increasing member 30 based on a second hinge axis 41. The scale verification apparatus 100 further includes a first rail 61 and a second rail 62, the first rail 61 extending in the first direction X, and the second rail 62 extending in the second direction Y. The weighing apparatus calibrating device 100 further comprises a first roller 71 and a second guide rail 72, the first roller 71 is pivoted with the end of the first movable component 20 far away from the power loading device 10 based on the first rotating shaft 22, and the first roller 71 is matched and clamped with the first guide rail 61, so that the first roller 71 can only move along the first direction X relative to the first guide rail 61, and further the first movable component 20 can only move back and forth along the first direction X and cannot deviate from the first direction X. The second roller 72 is pivotally connected to an end of the second movable member 40 close to the force increasing member 30 based on the second rotating shaft 42, and the second roller 72 is engaged with the second guide rail 62 in a matching manner, so that the second roller 72 can move only in the second direction Y relative to the second guide rail 62, and the second movable member 40 can reciprocate only in the second direction Y and cannot deviate from the second direction Y.
The first movable member 20 is moved in the first direction X away from the power loading device 10 by the first driving force F in the first direction X applied by the power loading device 10. The first movable member 20 simultaneously drives the first end 31 of the force-increasing member 30 to move away from the power loading device 10 along the first direction X, so as to drive the second end 32 of the force-increasing member 30 to drive the second movable member 40 to move towards the device under test 200 along the second direction Y, such that the second movable member outputs the second driving force N along the second direction Y.
In the present embodiment, the first hinge shaft 21 is coaxial with the first rotation shaft 22, and the second hinge shaft 41 is coaxial with the second rotation shaft 42. In other embodiments, the first hinge shaft 21 may not be coaxial with the first rotation shaft 22, and the second hinge shaft 41 may not be coaxial with the second rotation shaft 42. The design may be performed according to actual needs, and is not particularly limited herein.
In this embodiment, when the first roller 71 is driven by the first movable component 20 to move only along the first direction X relative to the first guide rail 61, the first roller 71 is in rolling contact with the first guide rail 61, so as to reduce friction and energy loss. When the second roller 72 is driven by the second movable member 40 to move only along the second direction Y relative to the second rail 62, the second roller 72 is in rolling contact with the second rail 62, so that friction force and energy loss can be reduced.
In other embodiments, the first roller 71 and the second roller 72 may be omitted, and the first rail 61 may be directly engaged with the first movable member 20 to limit the first movable member 20 to reciprocate only in the first direction X, and the first movable member 20 may be slidably connected to the first rail 61; the second guide rail 62 is directly engaged with the second movable member 40 to limit the second movable member 40 to reciprocate only in the second direction Y, and the second movable member 40 can be slidably coupled to the second guide rail 62. In this case, the number of parts of the weighing apparatus calibration device 100 can be reduced, the assembly difficulty can be reduced, and the cost can be reduced.
In this embodiment, a standard gauge member 50, such as a standard pressure sensor, is removably attached to the end of the second movable member 40 distal from the force increasing member 30. Therefore, the calibration of the standard measuring component 50 is facilitated, the standard measuring component 50 is only required to be detached from the weighing apparatus calibrating device 100 and calibrated by a metering department, and the whole weighing apparatus calibrating device 100 is not required to be brought to the metering department for calibration.
Fig. 3 shows the working principle of the force-increasing part 30 (for example a hinge rod). As shown in fig. 3, the first movable member 20 is moved in the first direction X by the first driving force F. The first movable member 20 simultaneously drives the first end 31 of the force increasing member 30 to move along the first direction X, thereby driving the second end 32 of the force increasing member 30 to drive the second movable member 40 to move along the second direction Y, so that the second movable member 40 outputs the second driving force N along the second direction Y. It can be determined from the principle of force transmission in the hinge rod that the first driving force F has the following relationship (1) with the second driving force N as shown in fig. 3.
N=F/tgθ…………………………(1)
Where θ is the angle between the direction of extension of the hinge rod and the second direction Y.
Further, as shown in fig. 3, sin θ ═ a/b … … … … … … … … … … (2)
Wherein a denotes a distance between first hinge shaft 21 and second hinge shaft 41 in first direction X; b denotes a distance between the first hinge shaft 21 and the second hinge shaft 41.
The relationship between the first driving force F and the second driving force N can be derived from the equations (1) and (2) as follows (3):
N=F/tan(arcsin(a/b))…………………………(3)
when a certain measurement target member 202 of the weighing apparatus 200 is inspected by the apparatus inspecting device 100, it is necessary to substantially align the standard weighing member 50 with the measurement target member 202 of the weighing apparatus 200, and to cause the second movable member 40 to apply the second driving force N to an area of the surface of the measuring table 201 corresponding to the measurement target member 202 through the standard weighing member.
In some embodiments, when the second driving force N is stably applied to the weight 200 under test, θ < 10 °, the second driving force N is amplified more than 5 times with respect to the first driving force F.
In some embodiments, as shown in fig. 1, the scale verification apparatus 100 further comprises an elastic device 80, the elastic device 80 being disposed on a side of the standard metering member 50 away from the second movable member 40, e.g., the elastic device 80 being connected to an end of the standard metering member 50 away from the second movable member 40.
FIG. 4 illustrates a schematic structural view of a resilient device according to some embodiments of the present disclosure. As shown in fig. 4, the elastic means 80 includes a guide sleeve 81, a spring 82, and a pressing piece 83. As shown in connection with fig. 1, the guide sleeve 81 is configured to position the axial extension direction of the guide sleeve 81 in the second direction Y when said elastic means 80 is in use. The guide sleeve 81 has a cylindrical structure with one end open and the other end closed, for example, a cylindrical shape. For example, as shown in fig. 4, the guide sleeve 81 is open at its upper end and closed at its lower end. Spring 82 is disposed within guide sleeve 81 and includes a fixed end 821 and a movable end 822 opposite fixed end 821, fixed end 821 being fixed relative to guide sleeve 81, e.g., fixed end 821 may be fixedly attached to the bottom of sleeve 821. The movable end 822 is movable relative to the fixed end 821 in the axial extension direction of the sleeve 821, i.e., the spring 82 is configured to be compressible or extendable in the axial extension direction of the sleeve 81. The pressing piece 83, for example a press ring, can be connected with the moving end 822 of the spring 82 and is arranged for abutting against the standard metering member 50.
Referring to fig. 1 and 4, the wafer 83 is connected to the master metering unit 50. When one of the weighing devices 202 to be measured of the weighing device 200 is inspected by the weighing device inspecting apparatus 100, the second movable member 40 applies the second driving force N to an area of the surface of the measuring table 201 corresponding to the weighing device 202 to be measured through the standard weighing device 50 and the elastic means 80. Therefore, the stroke of the second movable component 40 can be increased, the second driving force N is applied to the surface of the measuring platform 201 more stably, the accuracy of the detection indication value is effectively improved, and the verification is more accurate.
In some embodiments, the tab 83 is removably coupled to the standard metering component 50, thereby facilitating calibration of the standard metering component 50 by simply removing the standard metering component 50 from the scale verification apparatus 100.
In some embodiments, as shown in fig. 5, the elastic device 80 may be separated from the standard metering member 50, and when one of the to-be-measured metering members 202 of the weighing apparatus 200 is inspected by the apparatus inspecting device 100, the elastic device 80 may be placed on an area of the surface of the measuring platform 201 corresponding to the to-be-measured metering member 202, and the standard metering member 50 may be substantially aligned with the pressing piece 83 of the elastic device 80, and then the second movable member 40 applies the second driving force N to the area of the surface of the measuring platform 201 corresponding to the to-be-measured metering member 202 through the standard metering member 50 and the elastic device 80, so that similar effects as those of the previous embodiments may be obtained.
In some embodiments, the power loading device 10 includes a motor, and fig. 6 illustrates the connection of the power loading device to the first movable member according to some embodiments of the present disclosure. As shown in fig. 6, the power loading device 10 drives the first movable component 20 through the lead screw 12, and specifically, a speed reducer 11 may be disposed between the power loading device 10 and the lead screw 12, and the power loading device 10 drives the lead screw 12 to rotate. The first movable member 20 is provided with a threaded hole matching with the thread of the lead screw 12, and the first movable member 20 can be driven to move away from the power loading device 10 along the first direction X by the rotation of the lead screw 12, and the first movable member 20 can be driven to move close to the power loading device 10 along the first direction X when the lead screw 12 rotates reversely.
In some embodiments, as shown in fig. 1, the scale verification apparatus 100 further comprises a base 90 and a frame 91. Specifically, the base 90 is detachably fixed on a platform parallel to the first direction X, for example, a horizontal ground, and for example, the base 90 may be fixedly connected with an earth anchor disposed on the horizontal ground by using a hook to secure the base 90 on the horizontal ground. The frame 91 is fixedly connected to the base 90, and the frame 91 includes a first bracket 92 and a second bracket 93, wherein the first bracket 92 carries the first rail 61, and the second bracket 93 carries the second rail 62. As shown in fig. 1, the housing 91 has a "pi" shaped configuration, the first bracket 92 is a horizontal bracket, the first guide rail 61 is disposed on a side of the first bracket 92 facing the first movable member 20, the second bracket 93 is a vertical bracket, and the second guide rail 62 is disposed on a side of the second bracket 93 facing the second movable member 40. In other embodiments, the frame 91 may also take other shapes as long as it can support the first guide rail 61 extending along the first direction X and the second guide rail 62 extending along the second direction Y.
In some embodiments, the frame 91 and the base 90 may be integrally formed, resulting in a strong structure and reduced assembly parts.
In the above embodiment, the magnitude of the first driving force F provided by the power loading device 10, and thus the magnitude of the second driving force N applied to a region of the surface of the measurement platform 201 corresponding to the measurement component 202 to be measured, may be adjusted, so that the indication value of the measurement component 202 to be measured may be a continuous value from 0 to full scale.
Some embodiments of the present disclosure also provide a weighing apparatus calibrating method, which is performed by using the weighing apparatus calibrating device in the foregoing embodiments. FIG. 7 illustrates a flow chart of a method of calibrating a scale according to some embodiments of the present disclosure. As shown in fig. 7, the weighing apparatus verification method includes the following steps:
s10: fixing the weighing apparatus calibrating device on a platform close to the weighing apparatus to be measured;
specifically, for example, the balancer verification apparatus 100 shown in fig. 1 is fixed on a horizontal ground adjacent to the balancer 200 to be measured, and the base 90 of the balancer verification apparatus 100 may be fixedly connected to an earth anchor provided on the horizontal ground by using a hook.
S20: basically aligning the standard metering component to a metering component to be measured of the weighing apparatus to be measured;
specifically, the weighing apparatus calibrating device 100 is adjusted such that the second guide rail 62 of the weighing apparatus calibrating device 100 is disposed along the second direction Y, for example, the vertical direction, and such that the standard weighing member 50 is substantially aligned with the weighing member 202 to be measured of the weighing apparatus 200 to be measured, where the standard weighing member 50 is substantially aligned with the weighing member 202 to be measured of the weighing apparatus 200 to be measured means that when one weighing member 202 to be measured of the weighing apparatus 200 is calibrated by using the weighing apparatus calibrating device 100, the second movable member 40 applies the second driving force N to an area of the surface of the measuring platform 201 corresponding to the weighing member 202 to be measured through the standard weighing member 50 and the elastic means 80.
S30: starting a power loading device to drive the first movable component to move along a first direction;
specifically, the first movable member 20 is moved away from the power loading device 10 in the first direction X by the first driving force F in the first direction X applied by the power loading device 10. The first movable member 20 simultaneously drives the first end 31 of the force-increasing member 30 to move away from the power loading device 10 along the first direction X, thereby driving the second end 32 of the force-increasing member 30 to drive the second movable member 40 to move toward the device under test 200 along the second direction Y, so that the second movable member 40 outputs the second driving force N along the second direction Y, and the second movable member 40 applies the second driving force N to a region of the surface of the measurement platform 201 corresponding to the measurement member under test 202 through the standard measurement member 50 and the elastic device 80.
S40: and reading a standard value indicated by a standard metering component and a measured value indicated by the to-be-measured metering component.
Specifically, when the second driving force N applied by the second movable member 40 to an area of the surface of the measurement stage 201 corresponding to the measurement-under-test member 202 through the standard metering member 50 and the elastic means 80 is stabilized, the standard value indicated by the standard metering member 50 and the measurement value indicated by the measurement-under-test member 202 are read.
S50: comparing the standard value and the measured value.
Specifically, it is determined whether the metrology component 202 under test is acceptable by comparing the standard values indicated by the standard metrology component 50 and the measured values indicated by the metrology component 202 under test. If the absolute value of the difference between the standard value and the measured value is less than or equal to a first threshold, determining that the to-be-measured metering component 202 is qualified; and if the absolute value of the difference value between the standard value and the measured value is greater than the first threshold value, determining that the metering component 202 to be measured is unqualified.
In some embodiments, the single scale verification apparatus 100 shown in fig. 1 may be used to individually verify all the metrology components 202 of the scale 200 under test using the verification method described above. The weighing apparatus verification apparatus 100 may be used to simultaneously verify the weighing apparatus 200 under test with respect to the weighing apparatus 202.
Although the present disclosure is described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of the embodiments of the disclosure, and should not be construed as a limitation of the disclosure. The dimensional proportions in the drawings are merely schematic and are not to be understood as limiting the disclosure.
The foregoing embodiments are merely illustrative of the principles and configurations of this disclosure and are not to be construed as limiting thereof, it being understood by those skilled in the art that any variations and modifications of the disclosure may be made without departing from the general concept of the disclosure. The protection scope of the present disclosure shall be subject to the scope defined by the claims of the present application.

Claims (8)

1. A weighing apparatus calibrating device is characterized by comprising:
a base configured to be detachably fixed to a horizontal ground;
a power loading device configured to provide a first driving force in a horizontal direction;
a first movable member connected to the power loading means and configured to be movable in a horizontal direction by a first driving force;
a force-increasing member connected to the first movable member;
a second movable member connected to the force increasing member and configured to be driven by the force increasing member to move in the vertical direction when the first movable member moves in the horizontal direction and to output a second driving force in the vertical direction; and
and a metering member detachably connected to an end of the second movable member remote from the force increasing member and configured to measure the second driving force.
2. The scale verification apparatus as claimed in claim 1, wherein the force-increasing member comprises a hinge rod, the hinge rod being a rigid bar-shaped rod comprising a first end portion and a second end portion, the first end portion being hinged to the first movable member based on a first hinge axis, the second end portion being hinged to the second movable member based on a second hinge axis.
3. A scale verification apparatus as claimed in claim 2, further comprising:
a first guide rail extending in a horizontal direction;
the first roller is pivoted with the first movable part based on the first rotating shaft and is matched and clamped with the first guide rail;
a second guide rail extending in a vertical direction; and
and the second roller is pivoted with the second movable part based on the second rotating shaft and is matched and clamped with the second guide rail.
4. A scale verification apparatus as claimed in claim 2, further comprising:
the first guide rail extends along the horizontal direction and is matched and clamped with the first movable component, so that the first movable component and the first guide rail are connected in a sliding mode; and
and the second guide rail extends along the vertical direction and is matched and clamped with the second movable component, so that the second movable component and the second guide rail are connected in a sliding mode.
5. A scale verification apparatus as claimed in any one of claims 1 to 4 wherein the second driving force has the following relationship to the first driving force:
N=F/tan(arcsin(a/b))
wherein F represents a first driving force; n represents a second driving force; a represents a distance in a horizontal direction between the first hinge shaft and the second hinge shaft; b denotes a distance between the first hinge shaft and the second hinge shaft.
6. A scale verification apparatus as claimed in any one of claims 1-4, further comprising:
elastic means provided on a side of the metering member remote from the second movable member,
the elastic device comprises:
a guide sleeve configured to position an axial extension direction of the guide sleeve in a vertical direction when the elastic device is in use;
a spring disposed within the guide sleeve, including a fixed end fixed relative to the guide sleeve and a movable end opposite the fixed end, the spring configured to be compressible or extendable along the axial extension direction; and
a pressing tab connected with the moving end of the spring and configured for abutting the metering member.
7. A scale verification apparatus as claimed in claim 6, wherein the compression tab is removably connected to the metering member.
8. A scale verification apparatus as claimed in any one of claims 1 to 4 wherein the power loading means comprises a motor which drives the first movable member via a lead screw.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111157091A (en) * 2019-12-04 2020-05-15 中机生产力促进中心 Weighing apparatus calibrating device and weighing apparatus calibrating method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111157091A (en) * 2019-12-04 2020-05-15 中机生产力促进中心 Weighing apparatus calibrating device and weighing apparatus calibrating method

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