CN114993440B - Full-automatic portable large weight verification instrument and large weight verification method - Google Patents
Full-automatic portable large weight verification instrument and large weight verification method Download PDFInfo
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- CN114993440B CN114993440B CN202210836271.5A CN202210836271A CN114993440B CN 114993440 B CN114993440 B CN 114993440B CN 202210836271 A CN202210836271 A CN 202210836271A CN 114993440 B CN114993440 B CN 114993440B
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- 238000012795 verification Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000013519 translation Methods 0.000 claims description 83
- 238000012937 correction Methods 0.000 claims description 28
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 230000017105 transposition Effects 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 description 17
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000007599 discharging Methods 0.000 description 5
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/26—Counterweights; Poise-weights; Sets of weights; Holders for the reception of weights
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention provides a full-automatic portable large weight verification instrument and a large weight verification method. The large weight verification instrument comprises a main structure frame, a mass comparator, a weight centering and shifting device to be detected and a standard weight shifting device. The verification instrument can be split into a main structure frame comprising a weight centering and shifting device to be detected, a mass comparator, a standard weight shifting device and a standard weight, is convenient to transport to a site to be detected for quick assembly, has portability, and can automatically complete verification of large weights; the weight can be moved to the central position through the centering driving mechanism, so that the central position of the weight is consistent when the weight is weighed each time, the weight is basically coincident with the center of the mass comparator, and the repeatability precision of verification is improved; the standard weight shifting device can automatically drive standard weight transposition, the to-be-detected weight centering shifting device can automatically drive large weight transposition, quick high-precision transposition in the verification process is ensured, and verification efficiency and accuracy are improved.
Description
Technical Field
The invention relates to the technical field of weight calibration, in particular to a full-automatic portable large weight verification instrument and a large weight verification method.
Background
For some large-mass high-precision weights, such as weights for automobile scale on-site verification, force standard machine weights, flow ratio standard weights and the like, the problem that on-site verification personnel cannot move exists, the on-site crane weights for crane verification are low in efficiency, and differences exist in positions of the weights placed on a mass comparator each time, so that verification repeatability is poor.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a full-automatic portable large-weight verification instrument and a large-weight verification method.
In order to achieve the above purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: a full-automatic portable large weight verification instrument, comprising:
the device comprises a main structure frame, wherein the main structure frame is provided with a verification station and at least one waiting station;
the mass comparator is arranged below the main structure frame verification station;
the weight centering and shifting device to be detected comprises a moving frame, a left-right translation driving mechanism, a weight placing plate, a lifting mechanism and a centering adjusting mechanism, wherein the front side and the rear side of the main structure frame are respectively provided with a translation guide rail along the left-right direction, the moving frame is arranged on the translation guide rail of the main structure frame, and the left-right translation driving mechanism drives the moving frame to move along the translation guide rail; the weight placing plate is connected below the movable frame in a lifting manner, a weight to be detected is placed on the weight placing plate, and the lifting mechanism drives the weight placing plate to lift; the centering adjusting mechanism is arranged above the movable frame and comprises a first correcting push plate, a second correcting push plate and a centering driving mechanism, the first correcting push plate and the second correcting push plate are arranged in parallel, and the centering driving mechanism drives the first correcting push plate and the second correcting push plate to synchronously move in opposite directions or back to each other;
the standard weight shifting device comprises a truss, a front-back translation mechanism, a lifting mechanism and a weight bracket, wherein the truss stretches over the calibration station of the main structure frame, the standard weight is placed on the weight bracket, the front-back translation mechanism is installed on a cross beam of the truss, a base of the lifting mechanism is installed on a translation block of the front-back translation mechanism, the lifting mechanism drives the weight bracket to do lifting movement, and the front-back translation mechanism drives the lifting mechanism and the weight bracket to do front-back translation.
By adopting the technical scheme of the invention, the verification instrument can be split into a main structure frame comprising the weight centering and shifting device to be detected, a mass comparator, the standard weight shifting device and the standard weight, is convenient to transport to the site to be detected for quick assembly, has portability, and can automatically complete verification of the large weight; the weight can be moved to the central position by driving the first correction push plate and the second correction push plate through the centering driving mechanism, so that the central position of the weight is consistent when the weight is weighed each time, the weight is basically coincident with the center of the mass comparator, and the repeatability precision of verification is improved; the standard weight shifting device can automatically drive standard weight transposition, the to-be-detected weight centering shifting device can automatically drive large weight transposition, quick high-precision transposition in the verification process is ensured, and verification efficiency and accuracy are improved.
Further, the centering driving mechanism comprises a first screw rod assembly and a second screw rod assembly, the first screw rod assembly comprises a first screw rod motor, a first screw rod seat, a first screw rod, a first forward screw rod nut and a first reverse screw rod nut, the second screw rod assembly comprises a second screw rod motor, a second screw rod seat, a second screw rod, a second forward screw rod nut and a second reverse screw rod nut, a section of forward screw thread and a section of reverse screw thread are arranged on the first screw rod and the second screw rod, the first screw rod seat and the second screw rod seat are fixed on the movable frame, two ends of the first correction push plate are respectively connected to the first forward screw rod nut and the second forward screw rod nut, two ends of the second correction push plate are respectively connected to the first reverse screw rod nut and the second reverse screw rod nut, and the first screw rod motor and the second screw rod motor synchronously rotate forwards or reversely, so that the first correction push plate and the second correction push plate are driven to synchronously move backwards or reversely.
By adopting the preferable scheme, the synchronization of driving the first correction push rod and the second correction push plate to move is good, and the movement is stable.
Further, the weight rest plate is provided with a plurality of ball grooves, and movable balls are arranged in the ball grooves.
By adopting the preferable scheme, the centering moving smoothness of the large weight is improved.
Further, the left-right translation driving mechanism comprises a dragging motor, a dragging gear, a transmission shaft and a rack, the rack is arranged on the front side and the rear side of the main structure frame, the transmission shaft is rotatably arranged on the movable frame, the dragging gear is arranged on the transmission shaft, the dragging gear is meshed with the rack, and the dragging motor drives the transmission shaft to rotate so as to drive the movable frame to move along a translation guide rail on the main structure frame.
By adopting the preferable scheme, the translational stability is improved, and the accurate positioning is conveniently realized by matching with the position detection sensor.
Further, the mass comparator is provided with a plurality of support columns for supporting weights, and through holes for the support columns to pass through are formed in the weight placing plate and the bottom plate of the weight bracket.
By adopting the preferable scheme, the structure is compact and reasonable, the transposition is conveniently and rapidly completed, and the comparison and verification are completed by contacting with the quality comparator.
Further, the mass comparator comprises three high-precision sensors, the three high-precision sensors are distributed in an isosceles triangle, the central lines of the first correction push plate and the second correction push plate are in the same vertical plane with the central line of the isosceles triangle, and the left-right central line of the standard weight of the weight bracket is also in the same vertical plane with the central line of the isosceles triangle.
By adopting the preferable scheme, the offset load error of the mass comparator mainly occurs in the left and right directions perpendicular to the center line, and the offset load error in the direction coincident with the center line is small enough to be ignored, so that the center of the large weight is only required to be ensured to fall on the center line, the centering in the left and right directions of the large weight is only required to be carried out, the centering in the front and back directions is omitted, the structural arrangement of the centering mechanism is simplified, and the verification efficiency is improved.
Further, the main structure frame is provided with a verification station and 2 waiting stations, two sides of the verification station are respectively provided with one station, and the main structure frame is provided with 2 weight centering and shifting devices to be detected.
Further, the front and rear translation guide rails of the main structure frame comprise a first translation guide rail and a second translation guide rail which are parallel, the first translation guide rail and the second translation guide rail have height differences, wherein 1 weight centering and shifting device to be detected is arranged on the first translation guide rail, the other 1 weight centering and shifting device to be detected is arranged on the second translation guide rail, and the 2 weight centering and shifting devices to be detected can be translated in a staggered mode along the translation guide rails respectively arranged.
By adopting the preferable scheme, one waiting station on one side of the verification station is used for feeding the large weight to be detected, and one waiting station on the other side of the verification station is used for discharging after the large weight is detected, so that the feeding and discharging processes can be simultaneously parallel to the weight detection process, and the detection efficiency is greatly improved.
A large weight verification method comprises the following steps:
a1, conveying a main structure frame containing a weight centering and shifting device to be detected, a mass comparator and a standard weight shifting device to a weight field to be detected through a transport vehicle, and assembling the weights on a flat field;
step A2, hoisting a standard weight onto a weight bracket by using a crane or a forklift, moving an empty weight to be detected centering and shifting device to a verification station, moving the weight bracket to the upper part of a weight rest plate of the weight to be detected centering and shifting device by using a front-back translation mechanism and a lifting mechanism of the standard weight shifting device, adjusting the standard weight to a centering position by using a centering adjusting mechanism, and moving the weight bracket to the lateral direction of a main structure frame by using the lifting mechanism and the front-back translation mechanism of the standard weight shifting device;
step A3, moving the weight to be detected centering and shifting device to a waiting station, hoisting the weight to be detected on a weight placing plate of the weight to be detected centering and shifting device, and adjusting the weight to be detected to a centering position through a centering adjusting mechanism;
step A4, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M a1 The standard weight shifting device controls the standard weight to return to the original position;
step A5, the weight to be detected is moved to a verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured a2 The weight to be detected is centered and shifted by the shifting device and then is shifted to a waiting station;
step A6, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M a3 The standard weight shifting device controls the standard weight to return to the original position;
in the step A7 of the process,according to M a1 、M a2 、M a3 And determining the actual mass of the standard weight, wherein the actual mass of the weight to be detected is equal to the actual mass of the standard weight plus a mass difference value, and the mass difference value= (2*M) a2 -M a1 -M a3 ) 1/2, and finally generating a test report.
According to the verification method, according to the ABA comparison method, the linear deviation of detection is eliminated, and the detection efficiency is improved.
A large weight verification method comprises the following steps:
step B1, conveying a main structure frame containing a weight centering and shifting device to be detected, a mass comparator and a standard weight shifting device to a weight field to be detected through a transport vehicle, and assembling the weights on a flat field;
step B2, hoisting the standard weight to a weight bracket by using a crane or a forklift, moving an empty weight to be detected centering and shifting device to a verification station, moving the weight bracket to the upper part of a weight rest plate of the weight to be detected centering and shifting device by using a front-back translation mechanism and a lifting mechanism of the standard weight shifting device, adjusting the standard weight to a centering position by using a centering adjusting mechanism, and moving the weight bracket to the lateral direction of a main structure frame by using the lifting mechanism and the front-back translation mechanism of the standard weight shifting device;
step B3, moving the weight to be detected centering and shifting device to a waiting station, hoisting the weight to be detected on a weight placing plate of the weight to be detected centering and shifting device, and adjusting the weight to be detected to a centering position through a centering adjusting mechanism;
step B4, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M b1 The standard weight shifting device controls the standard weight to return to the original position;
step B5, the weight to be detected is moved to a verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured b2 The weight to be detected is centered and shifted by the shifting device and then is shifted to a waiting station;
step (a)B6, the weight to be detected is moved to the verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured b3 The weight to be detected is centered and shifted by the shifting device and then is shifted to a waiting station;
step B7, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M b4 The standard weight shifting device controls the standard weight to return to the original position;
step B8, according to M b1 、M b2 、M b3 、M b4 And determining the actual mass of the standard weight, wherein the actual mass of the weight to be detected is equal to the actual mass of the standard weight plus a mass difference value, and the mass difference value= (M) b2 +M b3 -M b1 –M b4 ) 1/2, and finally generating a test report.
According to the verification method, according to the ABBA comparison method, the linear deviation of detection is eliminated, and the detection accuracy is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a centering and shifting device with 2 groups of weights to be detected arranged on a main structure;
FIG. 3 is a schematic structural view of a centering and shifting device with 1 group of weights to be detected arranged on a main structure;
FIG. 4 is a schematic structural view of a centering adjustment mechanism;
fig. 5 is a schematic layout of a mass comparator employing 3 high-precision sensors.
Names of the corresponding parts indicated by numerals and letters in the drawings:
10-a main structure frame; 11-translating the guide rail; 12-waiting a station; 121-a feeding station; 122-a blanking station; 13-checking a station; 20-a weight centering and shifting device to be detected; 201-1 weight centering and shifting device to be detected; 202-2 weight centering and shifting device to be detected; 21-moving the frame; 22-weight rest plate; 221-balls; 222-a through hole; 23-a first correction push plate; 24-a second correction push plate; 25-a first screw motor; 26-a first screw rod seat; 27-a first screw rod; 28-a first forward feed screw nut; 29-a first reverse lead screw nut; 31-a second screw motor; 32-a second screw rod seat; 33-a second screw rod; 34-a second forward feed screw nut; 35-a second reverse lead screw nut; 41-a traction motor; 42-dragging gear; 43-a transmission shaft; 44-racks; 50-mass comparator; 51-supporting columns; 52-high precision sensor; 60-standard weight shifting device; 61-truss; 62-a fore-aft translation mechanism; 63-lifting mechanism; 64-weight bracket; 65-standard weight; 71-large weight to be inspected.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, one embodiment of the present invention is: a full-automatic portable large weight verification instrument, comprising:
a main structure frame 10, wherein a verification station 13 and at least one waiting station 12 are arranged on the main structure frame 10;
a mass comparator 50 disposed below the primary structure frame 10 certification station 13;
the weight centering and shifting device 20 to be detected comprises a moving frame 21, a left-right translation driving mechanism, a weight placing plate 22, a lifting mechanism and a centering and adjusting mechanism, wherein the front side and the rear side of the main structure frame 10 are respectively provided with a translation guide rail 11 along the left-right direction, the moving frame 21 is arranged on the translation guide rail 11 of the main structure frame 10, and the left-right translation driving mechanism drives the moving frame 21 to move along the translation guide rail 11; the weight rest plate 22 is connected below the movable frame 21 in a lifting manner, a weight 71 to be detected is placed on the weight rest plate 22, and the lifting mechanism drives the weight rest plate 22 to lift; the centering adjustment mechanism is arranged above the movable frame 21 and comprises a first correcting push plate 23, a second correcting push plate 24 and a centering driving mechanism, wherein the first correcting push plate 23 and the second correcting push plate 24 are arranged in parallel, and the centering driving mechanism drives the first correcting push plate 23 and the second correcting push plate 24 to synchronously move towards each other or back to each other;
the standard weight shifter 60 comprises a truss 61, a front-back translation mechanism 62, a lifting mechanism 64 and a weight bracket 64, wherein the truss 61 spans right above the verification station 13 of the main structure frame, the standard weight 65 is placed on the weight bracket 64, the front-back translation mechanism 62 is mounted on a beam of the truss 61, a base of the lifting mechanism is mounted on a translation block of the front-back translation mechanism, the lifting mechanism drives the weight bracket 64 to do lifting movement, and the front-back translation mechanism drives the lifting mechanism and the weight bracket 64 to do front-back translation.
The beneficial effects of adopting above-mentioned technical scheme are: the verification instrument can be split into a main structure frame comprising a weight centering and shifting device to be detected, a mass comparator, a standard weight shifting device and a standard weight, is convenient to transport to a site to be detected for quick assembly, has portability, and can automatically complete verification of large weights; the weight can be moved to the central position by driving the first correction push plate and the second correction push plate through the centering driving mechanism, so that the central position of the weight is consistent when the weight is weighed each time, the weight is basically coincident with the center of the mass comparator, and the repeatability precision of verification is improved; the standard weight shifting device can automatically drive standard weight transposition, the to-be-detected weight centering shifting device can automatically drive large weight transposition, quick high-precision transposition in the verification process is ensured, and verification efficiency and accuracy are improved.
In the above embodiment, the specific structural forms of the lifting mechanism, the lifting mechanism and the front-rear translation mechanism are not limited, and may be obtained from the prior art. The lifting mechanism can adopt a gear motor to drive a plurality of screw rod lifters to synchronously run through a shaft coupling, and the screw rod lifters are arranged at the corner positions of the weight placing plate and the movable frame. The lifting mechanism can adopt a screw rod lifter with a gear motor. The front-back translation mechanism can adopt a structure form of a guide screw matched with a translation guide rail.
As shown in fig. 4, in other embodiments of the present invention, the centering driving mechanism includes a first screw assembly and a second screw assembly, the first screw assembly includes a first screw motor 25, a first screw seat 26, a first screw 27, a first forward screw nut 28 and a first reverse screw nut 29, the second screw assembly includes a second screw motor 31, a second screw seat 32, a second screw 33, a second forward screw nut 34 and a second reverse screw nut 35, a first forward screw thread and a second reverse screw thread are respectively provided on the first screw 27 and the second screw 33, the first screw seat 26 and the second screw seat 32 are respectively fixed on the moving frame 21, two ends of the first correction push plate 23 are respectively connected to the first forward screw nut 28 and the second forward screw nut 34, two ends of the second correction push plate 24 are respectively connected to the first reverse screw nut 29 and the second reverse screw nut 35, and the first screw motor 25 and the second screw motor 31 synchronously rotate forward or reversely, so as to drive the first correction push plate 23 and the second correction push plate 24 to synchronously move backward or oppositely. The beneficial effects of adopting above-mentioned technical scheme are: the synchronization of driving the first correction push plate and the second correction push plate to move is good, and the movement is stable.
In other embodiments of the present invention, as shown in fig. 4, a plurality of ball grooves are provided on the weight rest plate 22, and movable balls 221 are installed in the ball grooves. The beneficial effects of adopting above-mentioned technical scheme are: and the centering moving smoothness of the large weight is improved.
As shown in fig. 2 and 4, in other embodiments of the present invention, the left-right translation driving mechanism includes a driving motor 41, a driving gear 42, a driving shaft 43, and a rack 44, the rack 44 is mounted on the front side and the rear side of the main frame 10, the driving shaft 43 is rotatably mounted on the moving frame 21, the driving gear 42 is mounted on the driving shaft 43, the driving gear 42 is meshed with the rack 44, and the driving motor 41 drives the driving shaft 43 to rotate, thereby driving the moving frame 21 to move along the translation rail 11 on the main frame. The beneficial effects of adopting above-mentioned technical scheme are: the translation stability is improved, and accurate positioning is facilitated by being matched with the position detection sensor.
In other embodiments of the present invention, as shown in fig. 3 and 4, a plurality of support columns 51 for supporting weights are provided on the mass comparator 50, and through holes 222 through which the support columns 51 pass are provided on the weight rest plate 22. The beneficial effects of adopting above-mentioned technical scheme are: the structure is compact and reasonable, the transposition is conveniently and rapidly completed, and the comparison and verification are completed by contacting with the quality comparator.
In other embodiments of the invention, as shown in fig. 5, the mass comparator 50 employs three high-precision sensors distributed in an isosceles triangle, and the midlines of the isosceles triangles are in the same vertical plane with the midlines of the first correction push plate 23 and the second correction push plate 24 when the shift frame set is located at the verification station; the left-right center line of the standard weight of the weight bracket is also positioned in the same vertical plane with the center line of the isosceles triangle. That is, when the test is performed, the centers of the standard weight 65 and the large weight 71 to be tested fall on the middle line of an isosceles triangle in which three high-precision sensors of the mass comparator are distributed. The beneficial effects of adopting above-mentioned technical scheme are: the offset load error of the mass comparator mainly occurs in the left-right direction perpendicular to the center line, and the offset load error in the direction coincident with the center line is small enough to be ignored, so that the center of the large weight is only required to be dropped on the center line, the centering in the left-right direction of the large weight is only required to be carried out, the centering in the front-back direction is omitted, the structural arrangement of the centering mechanism is simplified, and the verification efficiency is improved.
A large weight verification method comprises the following steps:
a1, conveying a main structure frame containing a weight centering and shifting device to be detected, a mass comparator and a standard weight shifting device to a weight field to be detected through a transport vehicle, and assembling the weights on a flat field;
step A2, hoisting a standard weight onto a weight bracket by using a crane or a forklift, moving an empty weight to be detected centering and shifting device to a verification station, moving the weight bracket to the upper part of a weight rest plate of the weight to be detected centering and shifting device by using a front-back translation mechanism and a lifting mechanism of the standard weight shifting device, adjusting the standard weight to a centering position by using a centering adjusting mechanism, and moving the weight bracket to the lateral direction of a main structure frame by using the lifting mechanism and the front-back translation mechanism of the standard weight shifting device;
step A3, moving the weight to be detected centering and shifting device to a waiting station, hoisting the weight to be detected on a weight placing plate of the weight to be detected centering and shifting device, and adjusting the weight to be detected to a centering position through a centering adjusting mechanism;
step A4, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M a1 The standard weight shifting device controls the standard weight to return to the original position;
step A5, the weight to be detected is moved to a verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured a2 The weight to be detected is centered and shifted by the shifting device and then is shifted to a waiting station;
step A6, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M a3 The standard weight shifting device controls the standard weight to return to the original position;
step A7, according to M a1 、M a2 、M a3 And determining the actual mass of the standard weight, wherein the actual mass of the weight to be detected is equal to the actual mass of the standard weight plus a mass difference value, and the mass difference value= (2*M) a2 -M a1 -M a3 ) 1/2, and finally generating a test report.
According to the verification method, according to the ABA comparison method, the linear deviation of detection is eliminated, and the detection efficiency is improved.
A large weight verification method comprises the following steps:
step B1, conveying a main structure frame containing a weight centering and shifting device to be detected, a mass comparator and a standard weight shifting device to a weight field to be detected through a transport vehicle, and assembling the weights on a flat field;
step B2, hoisting the standard weight to a weight bracket by using a crane or a forklift, moving an empty weight to be detected centering and shifting device to a verification station, moving the weight bracket to the upper part of a weight rest plate of the weight to be detected centering and shifting device by using a front-back translation mechanism and a lifting mechanism of the standard weight shifting device, adjusting the standard weight to a centering position by using a centering adjusting mechanism, and moving the weight bracket to the lateral direction of a main structure frame by using the lifting mechanism and the front-back translation mechanism of the standard weight shifting device;
step B3, moving the weight to be detected centering and shifting device to a waiting station, hoisting the weight to be detected on a weight placing plate of the weight to be detected centering and shifting device, and adjusting the weight to be detected to a centering position through a centering adjusting mechanism;
step B4, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M b1 The standard weight shifting device controls the standard weight to return to the original position;
step B5, the weight to be detected is moved to a verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured b2 The weight to be detected is centered and shifted by the shifting device and then is shifted to a waiting station;
step B6, the weight to be detected is moved to a verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured b3 The weight to be detected is centered and shifted by the shifting device and then is shifted to a waiting station;
step B7, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M b4 The standard weight shifting device controls the standard weight to return to the original position;
step B8, according to M b1 、M b2 、M b3 、M b4 Determination of the actual mass of a standard weightThe measured mass of the weight to be detected is obtained, wherein the measured mass is equal to the actual mass of the standard weight plus a mass difference value, and the mass difference value= (M b2 +M b3 -M b1 –M b4 ) 1/2, and finally generating a test report.
According to the verification method, according to the ABBA comparison method, the linear deviation of detection is eliminated, and the detection accuracy is improved.
In other embodiments of the present invention, the main structure frame 10 is provided with a verification station 13 and 2 waiting stations, wherein one waiting station is respectively arranged at two sides of the verification station, one waiting station at one side of the verification station is a loading station 121 for a large weight to be detected, and one waiting station at the other side of the verification station is a discharging station 122 after the detection of the large weight is completed. The weight centering and shifting device 201 to be detected and the weight centering and shifting device 202 to be detected are arranged on the main structure frame, the front and rear translation guide rails of the main structure frame comprise a first translation guide rail and a second translation guide rail which are parallel, the first translation guide rail and the second translation guide rail have height differences, the weight centering and shifting device 201 to be detected is arranged on the first translation guide rail, the weight centering and shifting device 202 to be detected is arranged on the second translation guide rail, and the weight centering and shifting device 201 to be detected and the weight centering and shifting device 202 to be detected can be in staggered translation along the translation guide rails respectively arranged. The beneficial effects of adopting above-mentioned technical scheme are: the feeding and discharging procedures can be simultaneously parallel to the weight detection process, so that the detection efficiency is greatly improved.
A large weight verification method comprises the following steps:
step C1, conveying a main structure frame, a mass comparator and a standard weight shifting device which comprise a weight centering shifting device to be detected No. 1 and a weight centering shifting device to be detected No. 2 to a weight site to be detected through a transport vehicle, and assembling the weight sites on a flat site;
step C2, hoisting the standard weight to a weight bracket by using a crane or a forklift, moving an empty No. 2 weight to be detected centering and shifting device to a verification station, moving the weight bracket to the position above a weight rest plate of the No. 2 weight to be detected centering and shifting device by using a front-back translation mechanism and a lifting mechanism of the standard weight shifting device, adjusting the standard weight to a centering position by using a centering adjusting mechanism, and moving the weight bracket to the rear side of a main structure frame by using the lifting mechanism and the front-back translation mechanism of the standard weight shifting device; meanwhile, hoisting the large weight to be detected on a weight rest plate of a No. 1 weight to be detected centering and shifting device positioned at a feeding station, and adjusting the weight to be detected to a centering position through a centering adjusting mechanism;
step C3, moving the centering and shifting device of the No. 2 weight to be detected to a blanking station, moving the standard weight to the central position on the mass comparator through the standard weight shifting device, and measuring the standard weight mass M c1 The standard weight shifting device controls the standard weight to return to the original position;
step C4, a weight to be detected is moved to a verification station by a weight centering and shifting device No. 1 to be detected, a lifting mechanism controls the weight to be detected to automatically fall on the central position of a mass comparator, and the mass M of the weight to be detected is measured c2 The weight to be detected centering and shifting device 1 moves the weight to be detected to a blanking station, and at the same time, the weight to be detected centering and shifting device 2 which is empty moves to a feeding station;
step C5, a weight to be detected is moved to a verification station by a weight centering and shifting device No. 1, a lifting mechanism controls the weight to be detected to automatically fall on the central position of a mass comparator, and the mass M of the weight to be detected is measured c3 The weight to be detected centering and shifting device moves the weight to be detected to a blanking station and sends out a prompt signal for removing the large weight; simultaneously hoisting the next large weight to be detected to a weight centering and shifting device No. 2 to be detected and automatically centering;
step C6, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M c4 The standard weight shifting device controls the standard weight to return to the original position; meanwhile, removing the inspected large weight in the weight to be inspected 1 centering and shifting device;
step C7, according to M c1 、M c2 、M c3 、M c4 Determining the actual mass of the standard weight, wherein the actual mass of the standard weight is equal to the actual mass of the weight to be detectedIs added to the actual mass of (c) by a mass difference of = (M c2 +M c3 -M c1 –M c4 ) 1/2, and finally generating a test report.
According to the large weight verification method, the feeding and discharging procedures can be simultaneously parallel to the weight detection process, and the detection efficiency is greatly improved.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, but not limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. A full-automatic portable large weight verification instrument, comprising:
the device comprises a main structure frame, wherein the main structure frame is provided with a verification station and at least one waiting station;
the mass comparator is arranged below the main structure frame verification station;
the weight centering and shifting device to be detected comprises a moving frame, a left-right translation driving mechanism, a weight placing plate, a lifting mechanism and a centering adjusting mechanism, wherein the front side and the rear side of the main structure frame are respectively provided with a translation guide rail along the left-right direction, the moving frame is arranged on the translation guide rail of the main structure frame, and the left-right translation driving mechanism drives the moving frame to move along the translation guide rail; the weight placing plate is connected below the movable frame in a lifting manner, a weight to be detected is placed on the weight placing plate, and the lifting mechanism drives the weight placing plate to lift; the centering adjusting mechanism is arranged above the movable frame and comprises a first correcting push plate, a second correcting push plate and a centering driving mechanism, the first correcting push plate and the second correcting push plate are arranged in parallel, and the centering driving mechanism drives the first correcting push plate and the second correcting push plate to synchronously move in opposite directions or back to each other; the centering driving mechanism comprises a first screw rod assembly and a second screw rod assembly, the first screw rod assembly comprises a first screw rod motor, a first screw rod seat, a first screw rod, a first positive screw rod nut and a first reverse screw rod nut, the second screw rod assembly comprises a second screw rod motor, a second screw rod seat, a second screw rod, a second positive screw rod nut and a second reverse screw rod nut, a section of positive screw thread and a section of reverse screw thread are arranged on the first screw rod and the second screw rod, the first screw rod seat and the second screw rod seat are fixed on the movable frame, two ends of the first correction push plate are respectively connected to the first positive screw rod nut and the second positive screw rod nut, two ends of the second correction push plate are respectively connected to the first reverse screw rod nut and the second reverse screw rod nut, and the first screw rod motor and the second screw rod motor synchronously rotate forwards or reversely so as to drive the first correction push plate and the second correction push plate to synchronously move backwards or reversely;
the standard weight shifting device comprises a truss, a front-back translation mechanism, a lifting mechanism and a weight bracket, wherein the truss stretches over the calibration station of the main structure frame, the standard weight is placed on the weight bracket, the front-back translation mechanism is installed on a cross beam of the truss, a base of the lifting mechanism is installed on a translation block of the front-back translation mechanism, the lifting mechanism drives the weight bracket to do lifting movement, and the front-back translation mechanism drives the lifting mechanism and the weight bracket to do front-back translation.
2. The full automatic portable large weight verification instrument according to claim 1, wherein the weight rest plate is provided with a plurality of ball grooves, and movable balls are installed in the ball grooves.
3. The full-automatic portable large weight verification instrument according to claim 1, wherein the left-right translation driving mechanism comprises a dragging motor, a dragging gear, a transmission shaft and a rack, the rack is mounted on the front side and the rear side of the main structure frame, the transmission shaft is rotatably mounted on the moving frame, the dragging gear is mounted on the transmission shaft, the dragging gear is meshed with the rack, and the dragging motor drives the transmission shaft to rotate so as to drive the moving frame to move along a translation guide rail on the main structure frame.
4. The full-automatic portable large weight verification instrument according to claim 1, wherein a plurality of support columns for supporting weights are arranged on the mass comparator, and through holes for the support columns to pass through are formed in the weight rest plate and the bottom plate of the weight bracket.
5. The full-automatic portable large weight verification instrument according to claim 4, wherein the mass comparator comprises three high-precision sensors distributed in an isosceles triangle, the midlines of the first correction push plate and the second correction push plate are in the same vertical plane as the midlines of the isosceles triangles, and the midlines of the standard weights of the weight bracket in the left-right direction are also in the same vertical plane as the midlines of the isosceles triangles.
6. The full-automatic portable large weight verification instrument according to claim 4, wherein the main structure frame is provided with a verification station and 2 waiting stations, two sides of the verification station are respectively provided with one waiting station, and the main structure frame is provided with 2 weight centering and shifting devices to be detected.
7. The fully automatic portable large weight verification instrument according to claim 6, wherein the front and rear translation rails of the main structure frame comprise a first translation rail and a second translation rail which are parallel, the first translation rail and the second translation rail have a height difference, wherein 1 weight centering shifter to be detected is mounted on the first translation rail, another 1 weight centering shifter to be detected is mounted on the second translation rail, and the 2 weight centering shifters to be detected can be shifted in a staggered manner along the translation rails mounted respectively.
8. A method for calibrating a large weight using the full-automatic portable large weight calibrating apparatus according to claim 1, comprising the steps of:
a1, conveying a main structure frame containing a weight centering and shifting device to be detected, a mass comparator and a standard weight shifting device to a weight field to be detected through a transport vehicle, and assembling the weights on a flat field;
step A2, hoisting a standard weight onto a weight bracket by using a crane or a forklift, moving an empty weight to be detected centering and shifting device to a verification station, moving the weight bracket to the upper part of a weight rest plate of the weight to be detected centering and shifting device by using a front-back translation mechanism and a lifting mechanism of the standard weight shifting device, adjusting the standard weight to a centering position by using a centering adjusting mechanism, and moving the weight bracket to the lateral direction of a main structure frame by using the lifting mechanism and the front-back translation mechanism of the standard weight shifting device;
step A3, moving the weight to be detected centering and shifting device to a waiting station, hoisting the weight to be detected on a weight placing plate of the weight to be detected centering and shifting device, and adjusting the weight to be detected to a centering position through a centering adjusting mechanism;
step A4, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M a1 The standard weight shifting device controls the standard weight to return to the original position;
step A5, the weight to be detected is moved to a verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured a2 The weight to be detected is centered and shifted by the shifting device and then is shifted to a waiting station;
step A6, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M a3 The standard weight shifting device controls the standard weight to return to the original position;
step A7, according to M a1 、 M a2 、M a3 And determining the actual mass of the standard weight, wherein the actual mass of the weight to be detected is equal to the actual mass of the standard weight plus a mass difference value, and the mass difference value= (2*M) a2 - M a1 -M a3 ) 1/2, and finally generating a test report.
9. A method for calibrating a large weight using the full-automatic portable large weight calibrating apparatus according to claim 1, comprising the steps of:
step B1, conveying a main structure frame containing a weight centering and shifting device to be detected, a mass comparator and a standard weight shifting device to a weight field to be detected through a transport vehicle, and assembling the weights on a flat field;
step B2, hoisting the standard weight to a weight bracket by using a crane or a forklift, moving an empty weight to be detected centering and shifting device to a verification station, moving the weight bracket to the upper part of a weight rest plate of the weight to be detected centering and shifting device by using a front-back translation mechanism and a lifting mechanism of the standard weight shifting device, adjusting the standard weight to a centering position by using a centering adjusting mechanism, and moving the weight bracket to the lateral direction of a main structure frame by using the lifting mechanism and the front-back translation mechanism of the standard weight shifting device;
step B3, moving the weight to be detected centering and shifting device to a waiting station, hoisting the weight to be detected on a weight placing plate of the weight to be detected centering and shifting device, and adjusting the weight to be detected to a centering position through a centering adjusting mechanism;
step B4, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M b1 The standard weight shifting device controls the standard weight to return to the original position;
step B5, the weight to be detected is moved to a verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured b2 The weight to be detected is centered and shifted by the shifting device and then is shifted to a waiting station;
step B6, the weight to be detected is moved to a verification station by the weight centering and shifting device to be detected, the lifting mechanism controls the weight to be detected to automatically fall on the central position of the mass comparator, and the mass M of the weight to be detected is measured b3 Centering and shifting device for weight to be detected and weight to be detectedThe method comprises the steps of (1) code-shifting to a waiting station;
step B7, moving the standard weight to the central position on the mass comparator through the standard weight displacement device to measure the standard weight mass M b4 The standard weight shifting device controls the standard weight to return to the original position;
step B8, according to M b1 、 M b2 、M b3 、M b4 And determining the actual mass of the standard weight, wherein the actual mass of the weight to be detected is equal to the actual mass of the standard weight plus a mass difference value, and the mass difference value= (M) b2 + M b3 - M b1 –M b4 ) 1/2, and finally generating a test report.
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