CN209543686U - A kind of buoyancy demonstration device for physical teaching purpose - Google Patents
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- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000005303 weighing Methods 0.000 claims abstract description 16
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 10
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 38
- 238000002474 experimental method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 241000190070 Sarracenia purpurea Species 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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Abstract
本实用新型公开了一种物理教学用浮力演示装置，包括底座、转动盘、观测箱、称重器、第一浮力测量装置和第二浮力测量装置，观测箱固定设置于转动盘的上端面，观测箱的内部第一测试腔和第二测试腔，第一测试腔之内竖直固定设置有第一竖杆，第二测试腔之内竖直固定设置有三个竖杆，竖杆之上分别设置有不同的浮块，第一浮力测量装置包括量筒和接水杯，量筒的侧面设置有出水管道，出水管道连通接水杯，弹簧拉力器竖直固定设置于电动液压伸缩杆的下端，本实用新型能够通过观测箱的实验直观的演示处浮力与液体密度，物理质量和体积的关系，且通过第一浮力测量装置和第二浮力测量装置，均可测量出浮力，相互比较，减小实验误差。
The utility model discloses a buoyancy demonstration device for physics teaching, which comprises a base, a rotating disk, an observation box, a weighing device, a first buoyancy measuring device and a second buoyancy measuring device, and the observation box is fixedly arranged on the upper end surface of the rotating disk. Inside the first test chamber and the second test chamber of the observation box, a first vertical rod is vertically fixed in the first test chamber, and three vertical rods are vertically fixed in the second test chamber. Different floats are provided. The first buoyancy measuring device includes a measuring cylinder and a water receiving cup. The side of the measuring cylinder is provided with a water outlet pipe, which is connected to the water receiving cup. Through the experiment of the observation box, the relationship between buoyancy and liquid density, physical mass and volume can be intuitively demonstrated, and the buoyancy can be measured by the first buoyancy measuring device and the second buoyancy measuring device, and can be compared with each other to reduce experimental errors.
Description
技术领域technical field
本实用新型涉及物理教学设备技术领域，具体涉及一种物理教学用浮力演示装置。The utility model relates to the technical field of physics teaching equipment, in particular to a buoyancy demonstration device for physics teaching.
背景技术Background technique
物理教学大都会解释一些生活现象，这些现象有的很常见，有的不是很常见，老师在授课的过程中，往往只会解释一些理论性的知识，同学们还是没能很好地理解这些现象发生的原因，造成课堂教学效率低，教学过程枯燥无味，浮力的教学是一个重点，在进行浮力教学过程中，老师一般会结合浮力演示实验进行教学，在测量物体在液体中所受浮力的物理实验中，浸在液体中的物体排出一定体积的液体，这部分体积的液体所受的重力等于物体所受的浮力物理教学过程中，所以针对上述问题我们提出一种理教学用浮力演示装置。Most physics teaching will explain some life phenomena. Some of these phenomena are very common, and some are not very common. In the process of teaching, the teacher often only explains some theoretical knowledge, and the students still fail to understand these phenomena well. The reason for the occurrence is that the classroom teaching efficiency is low, the teaching process is boring, and the teaching of buoyancy is a key point. In the process of buoyancy teaching, teachers generally teach in combination with buoyancy demonstration experiments. In the physical experiment of measuring the buoyancy of objects in liquid In the process of physics teaching, the object immersed in the liquid discharges a certain volume of liquid, and the gravity of this part of the volume of liquid is equal to the buoyancy of the object.
实用新型内容Utility model content
(一)要解决的技术问题(1) Technical problems to be solved
为了克服现有技术不足，现提出一种物理教学用浮力演示装置，能够通过观测箱的实验直观的演示处浮力与液体密度，物理质量和体积的关系，且通过第一浮力测量装置和第二浮力测量装置，均可测量出浮力，相互比较，减小实验误差。In order to overcome the deficiencies of the existing technology, a buoyancy demonstration device for physics teaching is proposed, which can intuitively demonstrate the relationship between buoyancy and liquid density, physical mass and volume through the experiment of the observation box, and through the first buoyancy measuring device and the second The buoyancy measuring device can measure the buoyancy and compare with each other to reduce the experimental error.
(二)技术方案(2) Technical solution
本实用新型通过如下技术方案实现：本实用新型提出了一种物理教学用浮力演示装置，其特征在于，包括底座、转动盘、观测箱、称重器、第一浮力测量装置和第二浮力测量装置，所述底座之上固定设置有两个支柱，所述支柱之间焊接有横板，所述转动盘通过轴承转动设置于底座之上，所述观测箱固定设置于转动盘的上端面，观测箱的内部通过隔板分隔为第一测试腔和第二测试腔，所述第一测试腔之内竖直固定设置有第一竖杆，所述第二测试腔之内竖直固定设置有第二竖杆、第三竖杆和第四竖杆，所述第一竖杆之上滑动套设有第一浮块，所述第二竖杆、第三竖杆和第四竖杆之上分别滑动套设第二浮块、第三浮块和第四浮块，所述称重器固定设置于底座之上，所述第一浮力测量装置包括量筒和接水杯，所述量筒固定设置于底座之上，接水杯设置于称重器的称重板之上，所述量筒的侧面设置有出水管道，所述出水管道连通接水杯，所述第二浮力测量装置包括电动液压伸缩杆和弹簧拉力器，所述电动液压伸缩杆对应量筒的竖直位置竖直固定设置于横板的下端面，所述弹簧拉力器竖直固定设置于电动液压伸缩杆的下端。The utility model is realized through the following technical solutions: the utility model proposes a buoyancy demonstration device for physics teaching, which is characterized in that it includes a base, a rotating disk, an observation box, a weighing device, a first buoyancy measurement device and a second buoyancy measurement device, two pillars are fixedly arranged on the base, a horizontal plate is welded between the pillars, the rotating disk is installed on the base through bearing rotation, and the observation box is fixedly arranged on the upper end surface of the rotating disk. The interior of the observation box is divided into a first test cavity and a second test cavity by a partition, the first vertical rod is fixed vertically in the first test cavity, and the vertical fix in the second test cavity is fixed The second vertical bar, the third vertical bar and the fourth vertical bar, the first floating block is slidingly sleeved on the first vertical bar, and the second vertical bar, the third vertical bar and the fourth vertical bar are above the second vertical bar. The second floating block, the third floating block and the fourth floating block are respectively slidably sleeved, the weighing device is fixedly arranged on the base, the first buoyancy measuring device includes a measuring cylinder and a water receiving cup, and the measuring cylinder is fixedly arranged on the On the base, the water receiving cup is set on the weighing plate of the weighing device, the side of the measuring cylinder is provided with a water outlet pipe, and the water outlet pipe is connected to the water receiving cup, and the second buoyancy measuring device includes an electro-hydraulic telescopic rod and a spring As for the tensioner, the electro-hydraulic telescopic rod is vertically and fixedly arranged on the lower end surface of the horizontal plate corresponding to the vertical position of the measuring cylinder, and the spring tensioner is vertically and fixedly arranged on the lower end of the electro-hydraulic telescopic rod.
进一步的，所述底座的下端面粘合有防滑橡胶垫。Further, a non-slip rubber pad is adhered to the lower end surface of the base.
进一步的，所述轴承的外环体焊接于底座之上，轴承的内环体焊接于转动盘之上。Further, the outer ring body of the bearing is welded on the base, and the inner ring body of the bearing is welded on the rotating disk.
进一步的，所述第一测试腔的后侧设置有第一出水管，所述第一出水管之上设置有第一控制阀。Further, a first water outlet pipe is provided on the rear side of the first test chamber, and a first control valve is arranged on the first water outlet pipe.
进一步的，所述第二测试腔的后侧设置有第二出水管，所述第二出水管之上设置有第二控制阀。Further, a second water outlet pipe is arranged on the rear side of the second test chamber, and a second control valve is arranged on the second water outlet pipe.
进一步的，所述第一浮块为木制浮块，第一浮块的侧面沿其高度方向设置有刻度标注。Further, the first floating block is a wooden floating block, and the side of the first floating block is provided with scale marks along its height direction.
进一步的，所述第二浮块为铁制浮块，所述第三浮块和第四浮块均为木制浮块，所述第二浮块和第三浮块体积相同，所述第四浮块的体积大于第三浮块的体积。Further, the second floating block is an iron floating block, the third floating block and the fourth floating block are both wooden floating blocks, the volume of the second floating block and the third floating block are the same, and the first floating block The volume of the fourth float is larger than the volume of the third float.
(三)有益效果(3) Beneficial effects
本实用新型相对于现有技术，具有以下有益效果：Compared with the prior art, the utility model has the following beneficial effects:
1.观测箱的内部通过隔板分隔为第一测试腔和第二测试腔，第一测试腔内的第一竖杆之上滑动套设有木制的第一浮块，通过向第一测试腔添加不同密度的液体，观测第一浮块侧面的刻度标注的差距，可直观演示出液体密度对浮力的影响，第二测试腔内设置有三个竖杆，分别三个浮块，向第二测试腔添加液体，第二浮块为铁制浮块，第三浮块和第四浮块均为木制浮块，第二浮块和第三浮块体积相同，第四浮块的体积大于第三浮块的体积，第二浮块和第三浮块在竖杆的漂浮位置比较可直观看出物体质量对浮力的影响，第三浮块和第四浮块的漂浮位置比较可直观看出体积对浮力的影响。1. The interior of the observation box is divided into the first test chamber and the second test chamber by a partition. A wooden first floating block is installed on the first vertical rod in the first test chamber. Add liquids of different densities to the cavity, and observe the difference between the scale marks on the side of the first floating block, which can visually demonstrate the influence of liquid density on buoyancy. Liquid is added to the test chamber, the second float is an iron float, the third float and the fourth float are both wooden floats, the volume of the second float is the same as that of the third float, and the volume of the fourth float is larger than The volume of the third floating block, the comparison of the floating position of the second floating block and the third floating block on the vertical bar can intuitively see the influence of the mass of the object on the buoyancy, and the comparison of the floating position of the third floating block and the fourth floating block can be visually observed The effect of volume on buoyancy.
2.观测箱设置于转动盘之上，可转动方向，面对学生，便于观察。2. The observation box is set on the rotating disk, which can be rotated to face the students for easy observation.
3.第一浮力测量装置和第二浮力测量装置均可测量出浮力，第二浮力测量装置通过弹簧拉力器所悬挂浮块的重量，以及入水的重量相减，所得差值即为浮力值，第一浮力测量装置测量出浮块所排出水的重量，即为浮力值，第一浮力测量装置和第二浮力测量装置得出的浮力值相互比较，可减小实验误差。3. Both the first buoyancy measuring device and the second buoyancy measuring device can measure the buoyancy. The second buoyancy measuring device subtracts the weight of the buoy suspended by the spring tensioner from the weight of the water entering the water, and the difference is the buoyancy value. A buoyancy measuring device measures the weight of the water discharged by the buoyancy block, which is the buoyancy value. The buoyancy values obtained by the first buoyancy measuring device and the second buoyancy measuring device are compared with each other to reduce experimental errors.
附图说明Description of drawings
图1是本实用新型结构示意图。Fig. 1 is the structural representation of the utility model.
图2是本实用新型中观测箱的左视图。Fig. 2 is the left side view of observation box in the utility model.
图3是本实用新型中观测箱的右视图。Fig. 3 is the right side view of the observation box in the utility model.
1-底座；2-转动盘；3-观测箱；4-称重器；5-第一浮力测量装置；6-第二浮力测量装置；7-第一浮块；8-第二浮块；9-第三浮块；10-第四浮块；11-支柱；12-横板；13-防滑橡胶垫；21-轴承；31-第一测试腔；32-第二测试腔；33-隔板；51-量筒；52-接水杯；53-出水管道；61-电动液压伸缩杆；62-弹簧拉力器；71-刻度标注；311-第一竖杆；312-第一出水管；313-第一控制阀；321-第二竖杆；322-第三竖杆；323-第四竖杆；324-第二出水管；325-第二控制阀；。1-base; 2-rotating disk; 3-observation box; 4-weigher; 5-first buoyancy measuring device; 6-second buoyancy measuring device; 7-first buoyancy block; 8-second buoyancy block; 9-the third floating block; 10-the fourth floating block; 11-pillar; 12-horizontal plate; 13-anti-slip rubber pad; 21-bearing; Plate; 51-Measuring cylinder; 52-Water cup; 53-Outlet pipe; 61-Electro-hydraulic telescopic rod; 62-Spring tensioner; 71-Scale mark; 311-First vertical bar; A control valve; 321-the second vertical bar; 322-the third vertical bar; 323-the fourth vertical bar; 324-the second water outlet pipe; 325-the second control valve;
具体实施方式Detailed ways
为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.
如图1、图2和图3所示的一种物理教学用浮力演示装置，包括底座1、转动盘2、观测箱3、称重器4、第一浮力测量装置5和第二浮力测量装置6，所述底座1之上固定设置有两个支柱11，所述支柱11之间焊接有横板12，所述转动盘2通过轴承21转动设置于底座1之上，所述观测箱3固定设置于转动盘2的上端面，观测箱3的内部通过隔板33分隔为第一测试腔31和第二测试腔32，所述第一测试腔31之内竖直固定设置有第一竖杆311，所述第二测试腔32之内竖直固定设置有第二竖杆321、第三竖杆322和第四竖杆323，所述第一竖杆311之上滑动套设有第一浮块7，所述第二竖杆321、第三竖杆322和第四竖杆323之上分别滑动套设第二浮块8、第三浮块9和第四浮块10，所述称重器4固定设置于底座1之上，所述第一浮力测量装置5包括量筒51和接水杯52，所述量筒51固定设置于底座1之上，接水杯52设置于称重器4的称重板之上，所述量筒51的侧面设置有出水管道53，所述出水管道53连通接水杯52，所述第二浮力测量装置6包括电动液压伸缩杆61和弹簧拉力器62，所述电动液压伸缩杆61对应量筒51的竖直位置竖直固定设置于横板12的下端面，所述弹簧拉力器62竖直固定设置于电动液压伸缩杆61的下端。A buoyancy demonstration device for physics teaching as shown in Figure 1, Figure 2 and Figure 3, comprising a base 1, a rotating disk 2, an observation box 3, a weighing device 4, a first buoyancy measuring device 5 and a second buoyancy measuring device 6. Two pillars 11 are fixedly arranged on the base 1, and a horizontal plate 12 is welded between the pillars 11. The rotating disk 2 is installed on the base 1 through bearings 21, and the observation box 3 is fixed Set on the upper end surface of the rotating disk 2, the interior of the observation box 3 is divided into a first test chamber 31 and a second test chamber 32 by a partition 33, and a first vertical rod is vertically fixed in the first test chamber 31 311, a second vertical rod 321, a third vertical rod 322 and a fourth vertical rod 323 are fixed vertically inside the second test cavity 32, and a first floating rod 311 is slidingly sleeved on the first vertical rod 311 Block 7, on the second vertical bar 321, the third vertical bar 322 and the fourth vertical bar 323, the second floating block 8, the third floating block 9 and the fourth floating block 10 are respectively slidably sleeved, and the weighing The device 4 is fixedly arranged on the base 1, the first buoyancy measuring device 5 includes a measuring cylinder 51 and a water receiving cup 52, the measuring cylinder 51 is fixedly arranged on the base 1, and the water receiving cup 52 is arranged on the weighing device 4. Above the plate, the side of the measuring cylinder 51 is provided with a water outlet pipe 53, the water outlet pipe 53 communicates with the water cup 52, the second buoyancy measuring device 6 includes an electro-hydraulic telescopic rod 61 and a spring tensioner 62, and the electro-hydraulic telescopic The rod 61 is vertically and fixedly arranged on the lower end surface of the horizontal plate 12 corresponding to the vertical position of the measuring cylinder 51 , and the spring tensioner 62 is vertically and fixedly arranged on the lower end of the electro-hydraulic telescopic rod 61 .
其中，所述底座1的下端面粘合有防滑橡胶垫13；所述轴承21的外环体焊接于底座1之上，轴承21的内环体焊接于转动盘2之上；所述第一测试腔31的后侧设置有第一出水管312，所述第一出水管312之上设置有第一控制阀313；所述第二测试腔32的后侧设置有第二出水管324，所述第二出水管324之上设置有第二控制阀325；所述第一浮块7为木制浮块，第一浮块7的侧面沿其高度方向设置有刻度标注71；所述第二浮块8为铁制浮块，所述第三浮块9和第四浮块10均为木制浮块，所述第二浮块8和第三浮块9体积相同，所述第四浮块10的体积大于第三浮块9的体积。Wherein, the lower end surface of the base 1 is bonded with a non-slip rubber pad 13; the outer ring body of the bearing 21 is welded on the base 1, and the inner ring body of the bearing 21 is welded on the rotating disk 2; the first The rear side of the test chamber 31 is provided with a first water outlet pipe 312, and a first control valve 313 is arranged above the first water outlet pipe 312; a second water outlet pipe 324 is provided at the rear side of the second test chamber 32, so A second control valve 325 is arranged above the second water outlet pipe 324; the first floating block 7 is a wooden floating block, and the side of the first floating block 7 is provided with a scale mark 71 along its height direction; The floating block 8 is an iron floating block, the third floating block 9 and the fourth floating block 10 are wooden floating blocks, the second floating block 8 and the third floating block 9 have the same volume, and the fourth floating block The volume of block 10 is greater than the volume of third float 9 .
本实用新型提到的一种物理教学用浮力演示装置，其在具体使用时，底座1的下端面粘合有防滑橡胶垫13，放置于桌面之上，不会轻易移动，可更加平稳，转动盘2通过轴承21转动设置于底座1之上，观测箱3固定设置于转动盘2的上端面，通过转动盘2转动观测箱3面向学生，更加便于观察，观测箱3的内部通过隔板33分隔为第一测试腔31和第二测试腔32，第一测试腔31之内竖直固定设置有第一竖杆311，第二测试腔32之内竖直固定设置有第二竖杆321、第三竖杆322和第四竖杆323，第一竖杆311之上滑动套设有第一浮块7，第二竖杆321、第三竖杆322和第四竖杆323之上分别滑动套设第二浮块8、第三浮块9和第四浮块10，第一浮块7为木制浮块，第一浮块7的侧面沿其高度方向设置有刻度标注71，向第一测试腔31添加不同密度的溶液，然后更据第一浮块7在第一竖杆311漂浮位置观测浮力，如果第一浮块7漂浮于液体表面，可结合第一浮块7侧面的刻度标注71观测，可直观的演示出液体密度对浮力的硬性，接着向第二测试腔32加水，第二浮块8为铁制浮块，第三浮块9和第四浮块10均为木制浮块，第二浮块8和第三浮块9体积相同，第四浮块10的体积大于第三浮块9的体积，第二浮块8和第三浮块9在竖杆上的高度位置做比较，可直观演示处物理质量对浮力的影响，第三浮块9和第四浮块10在竖杆上的高度位置比较，可直观演示处体积对浮力的影响，通过以上的比较，可直观表示出液体密度，物体的质量和体积对浮力的影响，使得实验更加生动。The utility model mentions a buoyancy demonstration device for physics teaching. When it is used in practice, the lower end surface of the base 1 is bonded with a non-slip rubber pad 13, which is placed on the table top and will not move easily. It can be more stable and rotate. The disk 2 is rotated on the base 1 through the bearing 21, and the observation box 3 is fixedly arranged on the upper end surface of the rotating disk 2. The observation box 3 is rotated by the rotating disk 2 to face the students, which is more convenient for observation. The inside of the observation box 3 passes through the partition 33 Divided into a first test cavity 31 and a second test cavity 32, the first test cavity 31 is vertically fixed with a first vertical rod 311, and the second test cavity 32 is vertically fixed with a second vertical rod 321, The third vertical bar 322 and the fourth vertical bar 323, the first vertical bar 311 is slidingly sleeved with the first floating block 7, and the second vertical bar 321, the third vertical bar 322 and the fourth vertical bar 323 slide respectively The second floating block 8, the third floating block 9 and the fourth floating block 10 are sleeved, the first floating block 7 is a wooden floating block, and the side of the first floating block 7 is provided with a scale mark 71 along its height direction. Add solutions of different densities to a test chamber 31, and then observe the buoyancy according to the first floating block 7 at the floating position of the first vertical rod 311. If the first floating block 7 floats on the liquid surface, the scale on the side of the first floating block 7 can be combined Observation marked 71 can intuitively demonstrate the hardness of the liquid density to the buoyancy, then add water to the second test chamber 32, the second floating block 8 is an iron floating block, the third floating block 9 and the fourth floating block 10 are wooden System floating block, the second floating block 8 and the third floating block 9 have the same volume, the volume of the fourth floating block 10 is greater than the volume of the third floating block 9, the second floating block 8 and the third floating block 9 on the vertical rod Comparing the height position can visually demonstrate the influence of the physical quality of the place on the buoyancy. The comparison of the height positions of the third floating block 9 and the fourth floating block 10 on the vertical bar can directly demonstrate the influence of the volume of the place on the buoyancy. Through the above comparison , which can visually show the influence of liquid density, mass and volume of objects on buoyancy, making the experiment more vivid.
称重器4固定设置于底座1之上，第一浮力测量装置5包括量筒51和接水杯52，量筒51固定设置于底座1之上，接水杯52设置于称重器4的称重板之上量筒51的侧面设置有出水管道53，出水管道53连通接水杯52，向量筒51加水，水面与出水管道53平齐，第二浮力测量装置6包括电动液压伸缩杆61和弹簧拉力器62，电动液压伸缩杆61对应量筒51的竖直位置竖直固定设置于横板12的下端面，弹簧拉力器62竖直固定设置于电动液压伸缩杆61的下端，将浮块挂在弹簧拉力器62下端个挂钩之上，称出重量，然后通过电动液压伸缩杆61调节使得浮块浸入水中，此时量筒51溢出的水通过出水管道53排入接水杯52，称重器4称处溢出水的重量即为浮力值，而此时弹簧拉力器62上的浮块因手浮力作用，弹簧拉力器62上回显示出第二个重量，两个重量的差值即为浮力值，通过第一浮力测量装置5和第二浮力测量装置6所得出的浮力值相比较，可减小实验误差，使得实验更加准确。The weighing device 4 is fixedly arranged on the base 1, the first buoyancy measuring device 5 includes a measuring cylinder 51 and a water receiving cup 52, the measuring cylinder 51 is fixedly arranged on the base 1, and the water receiving cup 52 is arranged on the weighing plate of the weighing device 4 The side of the upper measuring cylinder 51 is provided with a water outlet pipe 53, the water outlet pipe 53 is connected to the water receiving cup 52, the vector cylinder 51 is filled with water, the water surface is flush with the water outlet pipe 53, and the second buoyancy measuring device 6 includes an electro-hydraulic telescopic rod 61 and a spring tensioner 62. The vertical position of the hydraulic telescopic rod 61 corresponding to the measuring cylinder 51 is vertically fixedly arranged on the lower end surface of the horizontal plate 12, and the spring tensioner 62 is vertically fixedly arranged on the lower end of the electrohydraulic telescopic rod 61, and the floating block is hung on a hook at the lower end of the spring tensioner 62. Above, weigh out the weight, and then adjust the floating block to immerse in the water through the electro-hydraulic telescopic rod 61. At this time, the water overflowing from the measuring cylinder 51 is discharged into the water receiving cup 52 through the outlet pipe 53, and the weight of the overflowing water at the weighing device 4 is buoyancy value, and now the floating block on the spring tensioner 62 is due to hand buoyancy, the spring tensioner 62 shows the second weight on the back, and the difference between the two weights is the buoyancy value, which is passed through the first buoyancy measuring device 5 and the second weight Comparing the buoyancy values obtained by the two buoyancy measuring devices 6 can reduce the experimental error and make the experiment more accurate.
上面所述的实施例仅仅是对本实用新型的优选实施方式进行描述，并非对本实用新型的构思和范围进行限定。在不脱离本实用新型设计构思的前提下，本领域普通人员对本实用新型的技术方案做出的各种变型和改进，均应落入到本实用新型的保护范围，本实用新型请求保护的技术内容，已经全部记载在权利要求书中。The above-mentioned embodiments are only descriptions of preferred implementations of the present utility model, and are not intended to limit the concept and scope of the present utility model. Under the premise of not departing from the design concept of the present utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the present utility model should fall into the protection scope of the present utility model, and the technology claimed by the utility model The contents are all described in the claims.
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