CN2177231Y

CN2177231Y - Buoyancy measurer

Info

Publication number: CN2177231Y
Application number: CN 93222339
Authority: CN
Inventors: 蓝焕奎
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-23
Filing date: 1993-08-23
Publication date: 1994-09-14
Anticipated expiration: 2003-08-23

Abstract

The utility model relates to a buoyancy dynamometer, which is used for measuring the buoyancy of objects which is dipped in liquids. The utility model is characterized in that the buoyancy dynamometer is formed by that a shaft 7 which passes through the circle centers of a weight dial 1 and a buoyancy dial 2 is sheathed on a back supporting rack 17; an indicating needle 3 is fixed to the front end of the shaft 7; the weight dial 1 which is positioned on the upper side of the buoyancy dial 2 and is coaxial with the buoyancy dial 2; an upper rod 8 passes through an upper rod sleeve 11; an upper spring 9 is sheathed on the upper rod 8; a lower rod 4 passes through a lower rod sleeve 12; a lower spring 10 is sheathed on the lower rod 4; both ends of a worm 15 are respectively tightly fixed to the upper rod 8 and the lower rod 4; a gear shaft 13 is jogged with the worm 15; the buoyancy dial 2 sticks to a soleplate 18 and can rotate around the shaft 7.

Description

Buoyancy measurer

The utility model is to measure the utensil that is immersed in object buoyancy in the liquid, is applied to the weight of industrial small-sized object, the test and the physics teaching demonstration of buoyancy.

As everyone knows, the object that is immersed in the liquid all has buoyancy, but the buoyancy of Measuring Object does not still have measurement instrument intuitively at present, relates to the buoyancy of object, and people calculate by physics and mathematical programming to find the solution.Finding the solution of buoyancy also do not brought much difficulties for the object with simple geometry body, if but meet some shape very during complex objects, will become difficulty even be difficult to carry out of the calculating of buoyancy.

The purpose of this utility model is a kind of Buoyancy measurer of design, but with the weight of its Measuring Object, and energy measurement is immersed in the buoyancy of the object in the liquid.

The purpose of this utility model reaches like this: Buoyancy measurer, be used for the weight of object and be immersed in the measurement of liquid object buoyancy, of the present utility model being characterised in that: by the center of circle of passing weight scale 1 and buoyancy index dial 2 and be enclosed within axle 7 on the after-poppet 19, be fixed in the pointer 3 of axle 7 front ends, be in above the buoyancy index dial 2 and coaxial with it weight scale 1 dish, pass the upper boom 8 of upper boom cover 11, be placed in the upper spring 9 of upper boom 8, pass the lower beam 4 of low stem casing 12, be placed in the lower spring 10 on the lower beam 4, the worm screw 15 that two ends are fastening with upper boom 8 and lower beam 4 respectively, with the shaft gear 13 of worm screw 15 engagement be affixed on base plate 18 and can form around the buoyancy index dial 2 that axle 7 rotates.

Take the utility model of above measure, can demonstrate the weight and the buoyancy of tested small-sized object intuitively, this has very big Practical significance for the industrial metering relevant with buoyancy, physics law of buoyancy teaching demonstration.

In conjunction with the accompanying drawings the utility model is described in further detail again below:

Accompanying drawing 1 is a front elevation of the present utility model;

Accompanying drawing 2 is rear views of the present utility model;

Accompanying drawing 3 is left views of the present utility model;

Accompanying drawing 4 is right views of the present utility model.

With reference to above accompanying drawing.Weight scale dish 1 usefulness metal or plastic tab are made, and axle 7 is passed in its center of circle, and the dish edge adds that according to the maximum weighing value of upper spring 9 and lower spring 10 consideration suitably rubs the circumference evenly divided, and puts on the gravimetric value under the corresponding scale.Pointer 3 available metals or plastics are made, and length should be able to be taken into account weight scale and buoyancy scale simultaneously, and are fixed on axle 7 front ends with nut 14.Upper boom 8 usefulness metals are made, the drop handle 20 that the upper end has metal to make, and it passes the upper boom cover 11 that is fixed on the pole socket 16, and the lower end is with upper spring 9 and fixes with the upper end of worm screw 15.Lower beam 4 usefulness metals are made, and there are steelyard hook 6 and compressing tablet 5 in the lower end, and it passes the low stem casing 12 that is fixed on down on the pole socket 17, and the upper end is with lower spring 10 and fixes with the lower end of worm screw 15.Worm screw 15 usefulness metals or plastics are made, and the engaging tooth of worm screw 15 is looked the sensitivity that weighing requires and suitably designed, and the tiny more sensitivity of tooth is high more, but the also corresponding increase of the stroke of bar and volume is increased.Shaft gear 13 usefulness metals or plastics are made, the modulus and the number of teeth will be complementary with worm screw 15, shaft gear 13 is fixed on the rear end of axle 7, and be bearing with the circular hole on after-poppet 19 and the base plate 18, the moving up and down of worm screw 15 made corresponding inhour with engagement shaft gear 13 and clockwise rotated, and indicates the stressed corresponding readings of upper spring 9 and lower spring 10 thereby drive pointer 3.Buoyancy index dial 2 usefulness metals or plastic tab are made, and diameter weight/power ratio index dial 1 is big, looks practical requirement, and diameter is advisable at 10～30 centimetres.The dish edge adds that according to the maximum weighing value of upper spring 9 and lower spring 10 consideration suitably rubs the circumference evenly divided, and puts on the buoyancy numerical value under the corresponding scale.Unit should be identical with weight.Base plate 18 usefulness sheet metals or plastic sheet are made, and upper and lower is fixed with pole socket 16 and following pole socket 17 respectively, and center fixed has after-poppet 19.Buoyancy index dial 2 of the present utility model rotates around axle 7.Specific practice: weight scale dish 1 is near being fixed together with 3 screws and base plate 18 near near the small circumference the center of circle, in being a bit larger tham above-mentioned circumference range, on weight scale dish 1 and buoyancy index dial 2, stamp out the concavo-convex ring of location work that to coincide respectively around axle 7 circular motion, buoyancy index dial 2 centers of circle partly are a bit larger tham 3 screws and partly hollow out, and buoyancy index dial 2 just can rely on the location and the frictional rotation of concavo-convex ring like this.Using method of the present utility model is such: during the weight of weighing object, object to be measured is hung up steelyard hook 6, put on drop handle 20, testee is subjected to gravity promptly to spur upper spring 9 and compression lower spring 10, driving worm screw 15 moves downward, the tooth engagement shaft gear 13 of worm screw 15 rotates, thereby makes pointer 3 turn to the weight scale value of the testee that the circumference scale provides under the corresponding weight.During the buoyancy of Measuring Object, go out the weight of testee earlier with the said method scale, do not drive testee down, rotate buoyancy index dial 2 then, the weight numerical value that its " 0 " markers align is measured does not slowly have testee acceleration ground to immerse in the liquid, if the object of bubbling through the water column can be pressed in the liquid with compressing tablet 5 then, pointer 3 will counter-clockwise direction rotate like this, indicates the size of testee buoyancy.The principle of the utility model foundation is very simple: object does not slowly have acceleration ground to immerse in the liquid, object will have buoyancy upwards, this buoyancy is by upper spring 9 and lower spring 10 meterings, when the weight of testee is made " 0 " mark, the buoyancy that direction makes progress will drive shaft gear 13 by worm screw 15, counterclockwise rotate thereby drive pointer 3, indicate the size of buoyancy.

Claims

1, Buoyancy measurer, be used for the weight of object and be immersed in the measurement of the object buoyancy of liquid, of the present utility model being characterised in that: by passing the weight scale dish 1 and buoyancy index dial 2 centers of circle and being enclosed within axle 7 on the after-poppet 19, be fixed in the pointer 3 of axle 7 front ends, be in above the buoyancy index dial 2 and coaxial with it weight scale dish 1, pass the upper boom 8 of upper boom cover 11, be placed in the upper spring 9 on the upper boom 8, pass the lower beam 4 of low stem casing 12, be placed in the lower spring 10 on the lower beam 4, the worm screw 15 that two ends are fastening with upper boom 8 and lower beam 4 respectively, with the shaft gear 13 of worm screw 15 engagement be affixed on base plate 18 and can form around the buoyancy index dial 2 that axle 7 rotates.