Force measuring device

Abstract

The utility model provides a force measuring device which comprises a container, a floating ball, a force sensor and a connecting rod, the floating ball is located in the container, a containing cavity is formed in the floating ball, the floating ball is connected with the force sensor through the connecting rod, and the force sensor, the connecting rod and the floating ball are sequentially connected from top to bottom. In the scheme, the floating ball is connected with the force sensor through the connecting rod, so that the force sensor not only can sense the pulling force of the floating ball on the connecting rod, but also can detect the pushing force of the floating ball on the connecting rod so as to adapt to measurement under different conditions, and the acting force borne by the floating ball under different conditions can be better displayed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of measuring equipment, and in particular to a force measuring device. Background Art

[0002] Buoyancy refers to the upward force exerted by the liquid on an object in a liquid, which is proportional to the volume of the liquid displaced by the object. Traditional buoyancy measurement devices mainly use spring scales to measure buoyancy. However, there are some limitations in the traditional spring scale measurement of buoyancy. First, the spring scale can only measure sinking objects, and cannot measure objects floating on the surface of the liquid. Secondly, when using a spring scale to measure buoyancy, it is necessary to first measure the gravity of the object in the air, and then measure the gravity of the object in the liquid, and then calculate the value of buoyancy. This process is relatively cumbersome, prone to errors, and is not conducive to people's understanding of the principle of buoyancy and its correct application. Utility Model Content

[0003] In order to solve the above defects, the present disclosure provides a force measurement device to facilitate people to understand the principle of buoyancy.

[0004] The present disclosure provides a force measuring device, comprising a container, a float, a force sensor and a connecting rod, wherein the float is connected to the force sensor through the connecting rod, the float is located in the container, and a cavity is formed in the float.

[0005] Optionally, the force measuring device further comprises a bracket, and the force sensor is slidably connected to the bracket, so that the force sensor can move up and down along the extension direction of the bracket.

[0006] Optionally, the force measuring device further comprises a sliding member, wherein the sliding member is slidably connected to the bracket, and the force sensor is connected to the sliding member so that the force sensor is slidably connected to the bracket.

[0007] Optionally, the float and the connecting rod are detachably connected via a magnet.

[0008] Optionally, a counterweight block is also included, and the counterweight block is connected to the floating ball.

[0009] Optionally, the float includes a first opening and a second opening, and the cavity is communicated with the first opening and the second opening respectively, wherein the first opening is located above the second opening.

[0010] Optionally, it further includes a syringe and a connecting tube, and the syringe is connected to the first opening of the float through the connecting tube.

[0011] Optionally, the syringe is used to input gas into the float to discharge liquid in the float.

[0012] Optionally, a scale is formed on the outer shell of the float.

[0013] Optionally, the force sensor is connected to a computer.

[0014] In the force measuring device of some embodiments of the present disclosure, the float is connected to the force sensor through a connecting rod, so that the force sensor can not only sense the pulling force of the float on the connecting rod but also detect the pushing force of the float on the connecting rod, so as to adapt to the measurement of different situations and better display the force acting on the float in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a buoyancy measuring device in a certain embodiment of the present disclosure.

[0016] Figure 2 and Figure 3 Schematic diagram of the structure of a float in a certain embodiment of the present disclosure at different angles.

[0017] Figure 4 It is a schematic diagram of the structure of the float ball and the syringe in a certain embodiment of the present disclosure when they cooperate with each other.

[0018] Markings in the figure: 10, container; 20, float; 21, magnet; 22, first opening; 23, second opening; 30, force sensor; 40, connecting rod; 50, bracket; 60, sliding part; 70, locking bolt; 80, counterweight; 90, syringe; 91, connecting tube. DETAILED DESCRIPTION

[0019] It should be understood that the exemplary embodiments described herein should be considered only for descriptive purposes and not for limiting purposes. Descriptions of features or aspects in each exemplary embodiment should generally be considered applicable to similar features or aspects in other exemplary embodiments.

[0020] Figure 1 is a buoyancy measurement device in a certain embodiment of the present disclosure. Figure 1 As shown, the force measuring device includes a container 10, a float 20, a force sensor 30 and a connecting rod 40. The float 20 is located in the container 10. A cavity is formed in the float 20. The float 20 is connected to the force sensor 30 through the connecting rod 40, and the force sensor 30, the connecting rod 40 and the float 20 are connected in sequence from top to bottom.

[0021] Specifically, the float 20 is made of a material with a density less than that of water, such as plastic or light metal, so that the float 20 can float in the water. The shape of the float 20 can be spherical, cylindrical, or other shapes. It should be noted that, normally water is added to the container 10 to allow the float 20 to float in the water for measurement. However, in other embodiments, the float 20 can be placed in other liquids, and in this case, the float 20 can be made of materials with other densities, and the density of the material does not necessarily need to be less than that of water.

[0022] Optionally, the force measuring device further includes a bracket 50, and the force sensor 30 is slidably connected to the bracket 50, so that the force sensor 30 can move up and down along the extension direction of the bracket 50. Specifically, the force measuring device further includes a sliding member 60 and a locking bolt 70, the sliding member 60 is slidably connected to the bracket 50, and the force sensor 30 is connected to the sliding member 60 so that the force sensor 30 is slidably connected to the bracket 50, wherein the locking bolt 70 is threadedly connected to the sliding member 60, and the locking bolt 70 can press against the bracket 50 to lock the sliding member 60 on the bracket 50.

[0023] It should be noted that, since the locking bolt 70 is threadedly connected to the sliding member 60, the locking bolt 70 can be rotated to press the locking bolt 70 against the bracket 50 to lock the sliding member 60 to the bracket 50, so that the sliding member 60 is fixed to the bracket 50. In addition, when the user rotates the locking bolt 70 so that the locking bolt 70 is no longer pressed against the bracket 50, the sliding member 60 can slide up and down along the bracket 50 and thus drive the power sensor 30, the connecting rod 40 and the floating ball 20 to move up and down.

[0024] Optionally, the force measuring device further comprises a counterweight block 80, which is connected to the float 20. The density and weight of the counterweight block are relatively larger than the float 20, and it is mainly used to lower the center of gravity of the float 20 and ensure that the float 20 is not easy to shake.

[0025] In order to facilitate pumping gas or delivering liquid to the cavity of the float 20, in some optional embodiments, the float 20 includes a first opening 22 and a second opening 23, and the cavity is connected to the first opening 22 and the second opening 23 respectively, wherein the first opening 22 is located above the second opening 23. More specifically, the force measuring device also includes a syringe 90 and a connecting tube 91, and the syringe 90 is connected to the first opening 22 of the float 20 through the connecting tube 91. Specifically, the syringe 90 inputs gas to the float 20 through the first opening 22 or draws gas from the float 20 through the connecting tube 91. When the user wants the float 20 to float, gas can be delivered to the first opening 22 through the syringe 90, and the liquid in the float 20 will be discharged through the second opening 23, so that the float 20 floats. When the user wants the float 20 to sink, the air inside the float 20 can be sucked through the syringe 90, and the liquid will enter the float 20 along the second opening 23 of the float 20, and the float 20 will slowly sink. When the air is sucked to a node, the float 20 will be in a suspended state in the liquid. It should be noted that at this time, the syringe 90 and the connecting tube 91 are still not separated from the first opening 22 to prevent air from re-entering the float 20. More specifically, the first opening 22 is located at the upper half of the float 20, the second opening 23 is located at the lower half of the float 20, and the counterweight 80 is located at the bottom of the float 20.

[0026] Optionally, the float 20 and the connecting rod 40 are detachably connected via a magnet 21. More specifically, a magnet 21 is disposed on the top of the float 20, and a magnet is also disposed on the bottom of the connecting rod 40 to be magnetically connected to the magnet 21, thereby enabling the connecting rod 40 to be connected to the float 20.

[0027] Optionally, a scale is formed on the outer shell of the float 20. In order to better display the displacement of the liquid in the float 20, a scale is displayed on the outer shell of the float 20. Through the change of the scale, the user can learn the specific displacement of the float 20, so as to better understand the relationship between the displacement and the change of buoyancy.

[0028] In addition, in order to facilitate the user to check and analyze the data of the force sensor 30, in some optional implementations, the force sensor 30 is connected to a computer.

[0029] When a user uses the buoyancy measurement device in a certain embodiment of the present disclosure, the user can first place the container 10 and the float 20, and then adjust the position of the sliding member 60 on the bracket 50 to adjust the height of the force sensor 30. Then, the float 20 is installed below the force sensor 30 through the connecting rod 40. Next, the container 10 is filled with liquid so that the liquid overflows the second opening 23 of the float 20, and the data of the force sensor 30 is recorded by the computer to record the force change of the float 20 after the liquid is added. Next, the user can connect the syringe 90 with the first opening 22 through the connecting tube 91. If the user uses the syringe 90 to suck air into the float 20 through the first opening 22, the liquid will gradually enter the float 20 from the second opening 23. At this time, the float 20 slowly sinks, and when the air is pumped to a node, the float 20 will be in a suspended state in the liquid, and the buoyancy is equal to the gravity. If the air is continued to be pumped, the float 20 sinks to the bottom of the container 10, and the buoyancy is less than the gravity. If the syringe 90 is pushed to inflate the float 20, the liquid in the float 20 will be discharged along the second opening 23 at the bottom of the float 20, and the float 20 will slowly float up. After the liquid inside the float 20 is emptied, the float 20 will float on the liquid surface. At this time, the buoyancy is greater than the gravity.

[0030] Unlike the existing technology that mostly uses ropes as connecting objects, in the above solution, the connecting rod 40 made of relatively hard material is used to connect the force sensor 30 and the float 20, so that the force sensor can not only feel the downward pulling force from the float 20, but also feel the upward thrust from the float 20, so as to better show the force on the float. At the same time, the user can also input gas through the float 20 to control the content of gas and liquid inside the float, so as to control the force on the float 20.

[0031] Obviously, the above embodiments of the present disclosure are merely examples for clearly illustrating the present disclosure, and are not intended to limit the implementation methods of the present disclosure. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the claims of the present disclosure.

Claims

1. A force measuring device, characterized in that: The invention comprises a container, a floating ball, a force sensor and a connecting rod, wherein the floating ball is located in the container, a cavity is formed in the floating ball, the floating ball is connected to the force sensor through the connecting rod, and the force sensor, the connecting rod and the floating ball are connected in sequence from top to bottom.

2. The force measuring device according to claim 1, characterized in that It also includes a bracket, and the force sensor is slidably connected to the bracket, so that the force sensor can move up and down along the extension direction of the bracket.

3. The force measuring device according to claim 2, characterized in that It also includes a sliding member and a locking bolt, wherein the sliding member is slidably connected to the bracket, and the force sensor is connected to the sliding member so that the force sensor is slidably connected to the bracket, wherein the locking bolt is threadedly connected to the sliding member, and the locking bolt can be pressed against the bracket to lock the sliding member on the bracket.

4. The force measuring device according to claim 1, characterized in that The float ball and the connecting rod are detachably connected via a magnet.

5. The force measuring device according to claim 1, characterized in that It also includes a counterweight block, which is connected to the floating ball.

6. The force measuring device according to claim 1, characterized in that The float ball includes a first opening and a second opening, and the cavity is communicated with the first opening and the second opening respectively.

7. The force measuring device according to claim 6, characterized in that It also includes a syringe and a connecting tube, and the syringe is connected with the first opening of the float through the connecting tube.

8. The force measuring device according to claim 7, characterized in that The syringe is used to input gas into the float ball to discharge the liquid in the float ball.

9. The force measuring device according to claim 1, characterized in that The outer shell of the float is formed with scales, and the float is made of a material with a density less than that of water.

10. The force measuring device according to any one of claims 1 to 9, characterized in that The force sensor is connected to a computer.

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