CN106153254B - A kind of quality center of mass measurement in a closed series vehicle and measurement method - Google Patents

A kind of quality center of mass measurement in a closed series vehicle and measurement method Download PDF

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Publication number
CN106153254B
CN106153254B CN201610537435.9A CN201610537435A CN106153254B CN 106153254 B CN106153254 B CN 106153254B CN 201610537435 A CN201610537435 A CN 201610537435A CN 106153254 B CN106153254 B CN 106153254B
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measurement
vehicle
test
mass
quality
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CN106153254A (en
Inventor
张晓琳
王梅宝
唐文彦
王军
宋广才
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INDUSTRIAL TECHNOLOGY Research Institute OF HEILONGJIANG PROVINCE
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Harbin Institute of Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00Testing static or dynamic balance of machines or structures
    • G01M1/12Static balancing; Determining position of centre of gravity
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G19/00Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/387Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value
    • G01G19/393Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for combinatorial weighing, i.e. selecting a combination of articles whose total weight or number is closest to a desired value using two or more weighing units

Abstract

A kind of quality center of mass measurement in a closed series vehicle and measurement method, it is related to a kind of measurement vehicle and measurement method, and in particular to a kind of quality center of mass measurement in a closed series vehicle and measurement method.The present invention is poor in order to solve the problems, such as existing measuring device versatility.Measurement vehicle of the present invention includes upper beam, lower beam, rolling support component, mobile wheel assembly, four weighing sensors, four elevating mechanisms and four leveling components, upper beam, lower beam are from top to bottom set gradually, the rolling support component is mounted on the middle part of upper beam upper surface, the mobile wheel assembly is mounted on the middle part of lower beam lower surface, and the lower surface of upper beam left end is connect by two elevating mechanisms with the upper surface of lower beam left end.The invention belongs to engineering measurement fields.

Description

A kind of quality center of mass measurement in a closed series vehicle and measurement method
Technical field
The present invention relates to a kind of measurement vehicle and measurement methods, and in particular to a kind of quality center of mass measurement in a closed series vehicle and measurement side Method belongs to engineering measurement field.
Background technique
Quality, mass center are one of most important mass property parameters of the products such as rocket, automobile, submarine.Such as the matter of rocket Amount, mass center provide theoretical foundation for the installation of below deck equipment, with work such as recanalization, to the delivery energy of accurate analysis aircraft Power, raising orbit injection accuracy, enhancing gesture stability etc. are of great significance, and measurement will directly affect the transmitting of delivery whether accurate Posture and skyborne flight path;The security performance of automobile is increasingly interested in people, wherein quality is with centroid position One of and maximum index of safety effects handling to automobile, automobile chassis factory and vehicle assembling factory are formed in new product Before, the measurement ... of quality, mass center will be carried out.
For the centroid measurement of the large sized objects such as rocket, automobile, submarine, existing measuring technique be mainly line-of-sight course or Four-point method.Both methods is to cooperate weighing sensor and mechanical frock using principle of moment balance, calculate product to be measured Centroid position.It for various sizes of test product, needs to separately design measurement tooling, develops different more sets measurement systems System, versatility be not high.Therefore, the present invention proposes a kind of general quality center of mass combination metering device for large size product.
Summary of the invention
The present invention is to solve the problems, such as that existing measuring device versatility is poor, and then propose a kind of quality center of mass measurement in a closed series Vehicle and measurement method.
The technical solution adopted by the present invention to solve the above problem is as follows: measurement vehicle of the present invention includes upper beam, lower cross Beam, rolling support component, mobile wheel assembly, four weighing sensors, four elevating mechanisms and four leveling components, upper beam, Lower beam is from top to bottom set gradually, and the rolling support component is mounted on the middle part of upper beam upper surface, the movable pulley group Part is mounted on the middle part of lower beam lower surface, and the lower surface of upper beam left end is upper by two elevating mechanisms and lower beam left end The lower surface of surface connection, upper beam right end is connect by two elevating mechanisms with the upper surface of lower beam right end, and lower beam is left The upper surface at end and the upper surface of right end are respectively provided with two weighing sensors respectively, under the lower surface and right end of lower beam left end Surface is respectively provided with two leveling components respectively.
Specific step is as follows for measurement method of the present invention:
Step 1: two measurement sides are placed in orbit, and the electric pushrod of two measurement vehicles is all packed up, makes to survey The quality of amount vehicle is entirely fallen on mobile wheel assembly, and two measurement vehicles is pushed to be moved to the Support Position of test product along track;
Step 2: on the belt for the rolling support component that lifting test product is placed on two measurement vehicles, each measurement vehicle Four electric pushrods stretch out until it is each measurement vehicle movable pulley de-orbit, the distance pair stretched out by each electric pushrod Entire measurement vehicle is leveled;
Step 3: the elevating mechanism driving upper beam decline of each measurement vehicle, makes the quality of test product fall in weighing and passes On sensor, host computer acquires the numerical value of weighing sensor, the quality of test product is waited until by calculating, and under this posture The two-dimentional center-of-mass coordinate of test product;
Step 4: the elevating mechanism of each measurement vehicle pushes upper beam to rise, test product is made to be detached from weighing sensor, rolling Turn support component driving test product and rotates 90 °;
Step 5: the elevating mechanism of each measurement vehicle drives upper beam decline, the weight of test product is made to fully fall in title It retransmits on sensor, host computer acquires the numerical value of weighing sensor acquisition, obtains test product under this posture by calculating Two-dimentional center-of-mass coordinate;
Step 6: the measurement result of step 3 and step 5 to be calculated to the three-dimensional mass center of test product.
The beneficial effects of the present invention are: high-precision, automation, versatility measurement may be implemented in the 1, present invention;Utilize two sets Then product is rotated a certain angle and carries out the survey of an above-mentioned steps again by independent quality center of mass measuring device measurement in a closed series Amount, so that it may obtain the centroid position of big test product;2, each section of the present invention is a set of independent measuring device, for ruler Very little lesser test product, a set of measuring device can realize measurement;3, the present invention can be using two sets of independent measurement dresses Setting can be with measurement in a closed series, and distance can be adjusted arbitrarily between two sets of measuring devices, therefore measures various sizes of tested production Product do not need to design more set quality center of mass measuring devices;4, the present invention more traditional line-of-sight course or four-point method measurement is compared, and is weighed Number of sensors increases, and the range of each weighing sensor can take smaller, and the absolute error introduced accordingly can reduce, Measurement accuracy can be improved.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention, and Fig. 2 is using two measurement vehicle measurement in a closed series test product quality matter The schematic diagram of the heart.
Specific embodiment
Specific embodiment 1: embodiment is described with reference to Fig. 1, a kind of quality center of mass combination survey described in present embodiment Amount vehicle includes upper beam 1, lower beam 2, rolling support component, mobile wheel assembly, four weighing sensors, 3, four elevating mechanisms 4 With four leveling components 5, upper beam 1, lower beam 2 are from top to bottom set gradually, and the rolling support component is mounted on upper beam 1 The middle part of upper surface, the mobile wheel assembly are mounted on the middle part of 2 lower surface of lower beam, and the lower surface of 1 left end of upper beam passes through Two elevating mechanisms 4 are connect with the upper surface of 2 left end of lower beam, the lower surface of 1 right end of upper beam by two elevating mechanisms 4 with The upper surface of 2 right end of lower beam connects, and the upper surface of 2 left end of lower beam and the upper surface of right end are respectively provided with two weighings respectively and pass Sensor 3, the lower surface of 2 left end of lower beam and the lower surface of right end are respectively provided with two leveling components 5 respectively.
Specific embodiment 2: embodiment is described with reference to Fig. 1, a kind of quality center of mass combination survey described in present embodiment The rolling support component for measuring vehicle includes intermediate roller 6, left wheel 7, right idler wheel 8 and belt 9, and intermediate roller 6 is mounted on upper beam 1 The middle part of upper surface, left wheel 7 and right idler wheel 8 are separately mounted to the two sides of intermediate roller 6, intermediate roller 6, left wheel 7, right rolling Wheel 8 is connected by belt 9.Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: embodiment is described with reference to Fig. 1, a kind of quality center of mass combination survey described in present embodiment The each leveling component 5 for measuring vehicle includes that bracket 5-1, electric pushrod 5-2 and support footing 5-3, electric pushrod 5-2 are mounted on bracket On 5-1, support footing 5-3 is mounted on the end of the telescopic rod 5-4 of electric pushrod 5-2.Other compositions and connection relationship and specific Embodiment one is identical.
Specific embodiment 4: embodiment is described with reference to Fig. 1, a kind of quality center of mass combination survey described in present embodiment Measure vehicle, it is characterised in that: the mobile wheel assembly includes 10, two wheel shafts 11 of pedestal and four movable pulleys 12, two wheel shafts 11 The middle part of 2 lower surface of lower beam is mounted side by side on by pedestal 10, the both ends of each wheel shaft 11 are respectively provided with a movable pulley respectively 12.Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 5: embodiment is described with reference to Fig. 1, a kind of quality center of mass combination survey described in present embodiment Measure vehicle, it is characterised in that: a kind of quality center of mass measurement in a closed series vehicle further includes two auxiliary support wheels 13,1 left end of upper beam Upper surface and the upper surface of right end be respectively provided with an auxiliary support wheel 13 respectively.Other compositions and connection relationship and specific implementation Mode one, two, three or four are identical.
Specific embodiment 6: illustrating present embodiment, a kind of quality center of mass described in present embodiment in conjunction with Fig. 1 and Fig. 2 Measurement method be achieved by the steps of:
Step 1: two measurement sides are placed in orbit, and the electric pushrod 5-2 of two measurement vehicles is all packed up, It entirely falls within the quality for measuring vehicle on mobile wheel assembly, two measurement vehicles is pushed to be moved to the support level of test product along track It sets;
Step 2: on the belt 9 for the rolling support component that lifting test product is placed on two measurement vehicles, each measurement vehicle Four electric pushrod 5-2 stretch out until it is each measurement vehicle movable pulley 12 de-orbit, pass through each electric pushrod 5-2 stretch out Distance entire measurement vehicle is leveled;
Step 3: the elevating mechanism 4 of each measurement vehicle drives upper beam 1 to decline, the quality of test product is made to fall in weighing On sensor 3, host computer acquires the numerical value of weighing sensor 3, the quality of test product is waited until by calculating, and in this appearance The two-dimentional center-of-mass coordinate of test product under state;
Step 4: the elevating mechanism 4 of each measurement vehicle pushes upper beam 1 to rise, test product is made to be detached from weighing sensor 3, rolling support component drives test product to rotate 90 °;
Step 5: the elevating mechanism 4 of each measurement vehicle drives upper beam 1 to decline, fully fall in the weight of test product On weighing sensor 3, host computer acquires the numerical value that weighing sensor 3 acquires, and obtains test product in this posture by calculating Under two-dimentional center-of-mass coordinate;
Step 6: the measurement result of step 3 and step 5 to be calculated to the three-dimensional mass center of test product.
The present invention generally uses two measurements to be applied in combination when measuring, as shown in Fig. 2, each measurement vehicle is One independent measuring system, the three-dimensional mass center of test product, needs test product to convert posture, therefore every level-one in order to obtain Need to install additional rolling of the rolling support ring to realize test product on test product.
High-precision, automation, versatility measurement may be implemented in present embodiment, is surveyed using two sets of independent measurement vehicle combinations Amount, then product is rotated a certain angle and repeats carry out one-shot measurement, so that it may obtain the centroid position of big test product.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified For the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention, according to the technical essence of the invention, Within the spirit and principles in the present invention, any simple modifications, equivalent substitutions and improvements to the above embodiments etc., still Belong within the protection scope of technical solution of the present invention.

Claims (5)

1. a kind of quality center of mass measurement in a closed series vehicle, it includes upper beam (1), lower beam (2), rolling support component, movable pulley group Part, four weighing sensors (3), four elevating mechanisms (4) and four leveling components (5), upper beam (1), lower beam (2) are by upper It is set gradually under, the rolling support component is mounted on the middle part of upper beam (1) upper surface, and the mobile wheel assembly is mounted on The lower surface at the middle part of lower beam (2) lower surface, upper beam (1) left end passes through two elevating mechanisms (4) and lower beam (2) left end Upper surface connection, the lower surface of upper beam (1) right end passes through the upper surface of two elevating mechanisms (4) and lower beam (2) right end Connection, the upper surface of lower beam (2) left end and the upper surface of right end are respectively provided with two weighing sensors (3), lower beam (2) respectively The lower surface of left end and the lower surface of right end are respectively provided with two leveling components (5) respectively;It is characterized by: the rolling support group Part includes intermediate roller (6), left wheel (7), right idler wheel (8) and belt (9), and intermediate roller (6) is mounted on table on upper beam (1) The middle part in face, left wheel (7) and right idler wheel (8) are separately mounted to the two sides of intermediate roller (6), intermediate roller (6), left wheel (7), right idler wheel (8) is connected by belt (9).
2. a kind of quality center of mass measurement in a closed series vehicle according to claim 1, it is characterised in that: each leveling component (5) includes Bracket (5-1), electric pushrod (5-2) and support footing (5-3), electric pushrod (5-2) are mounted on bracket (5-1), support bottom Foot (5-3) is mounted on the end of the telescopic rod (5-4) of electric pushrod (5-2).
3. a kind of quality center of mass measurement in a closed series vehicle according to claim 1, it is characterised in that: the mobile wheel assembly includes bottom Seat (10), two wheel shafts (11) and four movable pulleys (12), two wheel shafts (11) are mounted side by side on lower beam by pedestal (10) (2) middle part of lower surface, the both ends of each wheel shaft (11) are respectively provided with a movable pulley (12) respectively.
4. a kind of according to claim 1,2 or 3 quality center of mass measurement in a closed series vehicle, it is characterised in that: a kind of quality matter Heart measurement in a closed series vehicle further includes two auxiliary support wheels (13), the upper surface of upper beam (1) left end and the upper surface difference of right end It is respectively provided with an auxiliary support wheel (13).
5. a kind of measurement method for being carried out quality center of mass using quality center of mass measurement in a closed series vehicle described in claim 1, feature are existed In: a kind of measurement method of quality center of mass is achieved by the steps of:
Step 1: two measurement sides are placed in orbit, and the electric pushrod of two measurement vehicles (5-2) is all packed up, is made The quality of measurement vehicle is entirely fallen on mobile wheel assembly, and two measurement vehicles is pushed to be moved to the support level of test product along track It sets;
Step 2: on the belt (9) for the rolling support component that lifting test product is placed on two measurement vehicles, each measurement vehicle Four electric pushrods (5-2) stretchings de-orbit up to the movable pulley (12) of each measurement vehicle, pass through each electric pushrod (5-2) The distance of stretching levels entire measurement vehicle;
Step 3: elevating mechanism (4) driving upper beam (1) decline of each measurement vehicle, makes the quality of test product fall in weighing On sensor (3), host computer acquires the numerical value of weighing sensor (3), the quality of test product is waited until by calculating, and at this The two-dimentional center-of-mass coordinate of test product under a posture;
Step 4: the elevating mechanism (4) of each measurement vehicle pushes upper beam (1) to rise, test product is made to be detached from weighing sensor (3), rolling support component driving test product rotates 90 °;
Step 5: the elevating mechanism (4) of each measurement vehicle drives upper beam (1) decline, fully fall in the weight of test product On weighing sensor (3), host computer acquires the numerical value of weighing sensor (3) acquisition, obtains test product at this by calculating Two-dimentional center-of-mass coordinate under posture;
Step 6: the measurement result of step 3 and step 5 to be calculated to the three-dimensional mass center of test product.
CN201610537435.9A 2016-07-08 2016-07-08 A kind of quality center of mass measurement in a closed series vehicle and measurement method Active CN106153254B (en)

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CN108007643A (en) * 2018-01-22 2018-05-08 北京卫星环境工程研究所 Multiple spot cloth standing posture center mass measuring device and measuring method
CN109489901A (en) * 2018-11-22 2019-03-19 北京航天计量测试技术研究所 A kind of online quality center of mass measuring table in assembly docking scene
CN111015155A (en) * 2019-12-11 2020-04-17 北京航天计量测试技术研究所 Explosion-proof appearance butt-joint platform of transferring

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CN103592079A (en) * 2013-11-28 2014-02-19 航天科工哈尔滨风华有限公司 Large-size large-tonnage cylindrical or column-shaped workpiece axial mass center measuring instrument
CN104075845A (en) * 2014-07-14 2014-10-01 北京航空航天大学 Mass and mass center measuring device for guided missile in irregular shape
CN105223016A (en) * 2015-11-10 2016-01-06 长春理工大学 Rotation mechanism for wind before a kind of solid of revolution

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Publication number Priority date Publication date Assignee Title
CN101846542A (en) * 2010-06-02 2010-09-29 郑州机械研究所 Split type measuring mechanism for measuring quality and three-dimensional centroid of objects
CN102788660A (en) * 2011-05-18 2012-11-21 首都航天机械公司 Universal mass and centroid measurement platform
CN103256967A (en) * 2012-02-20 2013-08-21 哈尔滨建成集团有限公司 System for detecting mass, mass center and mass offcenter of cylinder
CN103592079A (en) * 2013-11-28 2014-02-19 航天科工哈尔滨风华有限公司 Large-size large-tonnage cylindrical or column-shaped workpiece axial mass center measuring instrument
CN104075845A (en) * 2014-07-14 2014-10-01 北京航空航天大学 Mass and mass center measuring device for guided missile in irregular shape
CN105223016A (en) * 2015-11-10 2016-01-06 长春理工大学 Rotation mechanism for wind before a kind of solid of revolution

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Effective date of registration: 20210107

Address after: Building 9, accelerator, 14955 Zhongyuan Avenue, Songbei District, Harbin City, Heilongjiang Province

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Patentee before: HARBIN INSTITUTE OF TECHNOLOGY