CN205940721U

CN205940721U - Physical experiment balance

Info

Publication number: CN205940721U
Application number: CN201620900179.0U
Authority: CN
Inventors: 廖韬
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-18
Filing date: 2016-08-18
Publication date: 2017-02-08
Anticipated expiration: 2026-08-18

Abstract

The utility model relates to a physical experiment balance, including base, spacing, hang oneself from a beam, tray, balanced nut, supporting rack, graduated disk, pointer, rider, scale, graduated flask and counterpoise, the supporting rack is fixed in on the base, spacing is two, is fixed in on the base and be located the both sides of supporting rack, hang oneself from a beam through connecting axle and supporting rack swing joint, the tray is two, is located the both ends of hanging oneself from a beam to be located spacing directly over, balanced nut is two, is located the both sides of hanging oneself from a beam, is connected with hanging oneself from a beam through the lead screw, the graduated disk is fixed in the top of supporting rack, and the pointer passes through connecting axle and supporting rack swing joint, the inboard surperficial evenly distributed of going up of graduated flask has a plurality of furry breaking out, and furry protruding as an organic whole with the graduated flask, the distance between adjacent furry the breaking out is lighter than the diameter of hydrone, graduated flask and counterpoise lie in two trays respectively, the quality of counterpoise and the equal masses of graduated flask. Easy operation when water is weighed to this balance, the accuracy is high.

Description

A kind of Physical Experiment balance

Technical field

This utility model is related to experiment equipment field, especially a kind of Physical Experiment balance.

Background technology

Physical Experiment balance be laboratory commonly use Measuring Object quality, the experimental apparatus of density, conventional Physical Experiment Balance as shown in figure 1, include base 11, position-limited rack 12, overarm 13, pallet 14, balance nut 15, bearing support 16, index dial 17, Pointer 18, rider 19 and scale 20, bearing support 16 is fixed on base 11；Position-limited rack 12 be two, be fixed on base and Positioned at the both sides of bearing support, the end for blocking overarm falls, and prevents pallet from dropping；Connecting shaft and bearing support are passed through in overarm 13 It is flexibly connected；Pallet is two, positioned at the both ends of overarm, and is located at the surface of position-limited rack；Balance nut is two, position In the both sides of overarm, it is connected with overarm by screw mandrel；Index dial is fixed on the top of bearing support, and pointer passes through connecting shaft and supporting Frame is flexibly connected.The Physical Experiment balance of this structure, when measuring the quality of water, first has to the container measuring water and holding water Gross mass m1, then measure quality m2 of the container holding water, obtain the quality of water with m1-m2, this way has following lacking Point：

1st, operation is cumbersome；

2nd, during being poured out in the container hold water due to water, small part water is liable to stick to hold the container of water On inner surface, so that the quality of water calculating has certain deviation with the quality of the water of actual measurement, so that the essence of experiment Exactness reduces.

Utility model content

Therefore, this utility model provides a kind of Physical Experiment balance, to solve the above problems.

The technical solution of the utility model is：A kind of Physical Experiment balance, including base, position-limited rack, overarm, pallet, puts down Weighing apparatus nut, bearing support, index dial, pointer, rider, scale, measuring cup and counterpoise；Described bearing support is fixed on described base On；Described position-limited rack is two, is fixed on described base and is located at the both sides of described bearing support；Described overarm is by connecting Axle is flexibly connected with bearing support；Described pallet is two, positioned at the both ends of described overarm, and is just located at described position-limited rack Top；Described balance nut is two, positioned at the both sides of described overarm, is connected with overarm by screw mandrel；Described index dial is fixed In the top of described bearing support, described pointer is flexibly connected with bearing support by connecting shaft；On the inner surface of described measuring cup all Even multiple furry projections are distributed with, described furry projection and described measuring cup are integrated, adjacent described furry projection it Between distance be less than hydrone diameter；Described measuring cup and described counterpoise are located in two described pallets respectively；Described flat The quality of weighing apparatus counterweight is equal with the quality of described measuring cup.

Optionally, described Physical Experiment balance also includes flexible pipe of shaping, and one end of described sizing flexible pipe is fixed on described On bolster；The other end is provided with convex lenss and LED.

Optionally, described bearing support is provided with pipe spirit level.

Optionally, described index dial is provided with generating laser, described generating laser just to described index dial zero Graduation mark, described pointer is located between described index dial and described generating laser.

The Physical Experiment balance that this utility model provides, when weighing solid, measuring cup and counterpoise is taken off from pallet The Physical Experiment balance that can be used as routine uses, and when weighing water, water can be placed in measuring cup, and according to balance, " left thing is right Measuring cup is placed in left side pallet by the using method of code ", counterpoise is placed in right side pallet and weighs, operation is fairly simple, weighs During water is poured out in the container hold water afterwards, due to multiple fine, soft furs fill the support of projection and adjacent furry projection it Between distance be less than the diameter of hydrone, on the inner surface that water is not easy be attached to the container holding water, so that calculating The quality of water is very little with the mass deviation of the water of actual measurement or even zero deflection, thus improve the degree of accuracy of experiment.

Brief description

Fig. 1 is a kind of structural representation of existing Physical Experiment balance；

Fig. 2 is a kind of structural representation of Physical Experiment balance that this utility model provides；

Fig. 3 is a kind of cross-sectional view of the measuring cup of Physical Experiment balance that this utility model provides；

Fig. 4 is enlarged drawing at A for the Fig. 3；

Fig. 5 is a kind of concrete structure schematic diagram of Physical Experiment balance that this utility model provides；

Fig. 6 is a kind of concrete structure schematic diagram of Physical Experiment balance that this utility model provides；

Fig. 7 is a kind of concrete structure schematic diagram of Physical Experiment balance that this utility model provides；

Fig. 8 is enlarged drawing at B for the Fig. 7；

Wherein, 11, base；12nd, position-limited rack；13rd, hang oneself from a beam；14th, pallet；15th, balance nut；16th, bearing support；17th, index Disk；18th, pointer；19th, rider；20th, scale；21st, measuring cup；22nd, counterpoise；23rd, furry projection；24th, sizing flexible pipe；25、 Convex lenss；26th, LED；27th, pipe spirit level；28th, generating laser.

Specific embodiment

Below in conjunction with the accompanying drawings the technical solution of the utility model is described in detail.

This utility model provides a kind of Physical Experiment balance, referring to Fig. 2-Fig. 4, including base 11, position-limited rack 12, overarm 13rd, pallet 14, balance nut 15, bearing support 16, index dial 17, pointer 18, rider 19, scale 20, measuring cup 21 and counterpoise 22, counterpoise is actually a counterweight, and effect is the therefore referred to as counterpoise in order to keep measuring cup to balance, this place The making material of the measuring cup stated can be metal material, and the such as described bearing support such as ferrum, steel is fixed on described base；Described limit Position frame is two, is fixed on described base and is located at the both sides of described bearing support；Connecting shaft and supporting are passed through in described overarm Frame is flexibly connected；Described pallet is two, positioned at the both ends of described overarm, and is located at the surface of described position-limited rack；Institute State balance nut and be two, positioned at the both sides of described overarm, be connected with overarm by screw mandrel；Described index dial is fixed on described The top of bolster, described pointer is flexibly connected with bearing support by connecting shaft；It is evenly distributed with the inner surface of described measuring cup Multiple furry projections 23, the vertical fine hair shape of furry preferably human body, described furry projection and described measuring cup are One, the distance between adjacent described furry projection is less than the diameter of hydrone；The diameter of furry projection is preferably micro- 5 To between 15 microns, described measuring cup and described counterpoise are located in two described pallets rice respectively；The matter of described counterpoise Amount is equal with the quality of described measuring cup, certainly uses as balance, Physical Experiment balance can include counterweight.

When using, because the scale on scale is less, people observe inconvenient, especially in light Physical Experiment balance When line is dark or when user's eyes are near-sighted, for this reason, applicant has also done following improvement to Physical Experiment balance：Referring to figure 5, above-mentioned Physical Experiment balance can also include flexible pipe 24 of shaping, and one end of described sizing flexible pipe is fixed on described bearing support； The other end is provided with convex lenss 25 and LED 26, during use, it can be made to be aligned by the position that flexible pipe of shaping adjusts convex lenss Scale at rider, the scale that rider is gone out amplifies, and opens LED, thus the scale at rider is significantly shown simultaneously Come, be convenient for people to observe.

Physical Experiment balance it should set level Physical Experiment balance, otherwise can affect the accuracy weighing, have when using Due to being affected by objective condition, the operating platform of laboratory is not the level of standard it is therefore desirable to user oneself for a little schools Find more flat position and place Physical Experiment balance, but the position looked for naked eyes can not reach preferable horizon effect, is This, applicant is provided with pipe spirit level 27 on described bearing support, and referring to Fig. 6, the position found by pipe spirit level is relative to meat The position horizon effect that eye is looked for greatly improves.

In order that the data weighing is accurately, before weighing, the position of people's regulation pointer will just be directed at the zero graduation of index dial Line, returns to zero to Physical Experiment balance, and it is all by macroscopic that general people adjust pointer position, easily has larger mistake Difference.The therefore data of weighing is larger with object real data error, for this reason, referring to Fig. 7 and Fig. 8, applicant is in described index dial Upper installation generating laser 28, the zero graduation line just to described index dial for the described generating laser, described pointer is located at described point Between scale and described generating laser, when returning to zero to Physical Experiment balance, open generating laser, generating laser sends Light luminous point is formed on the zero graduation line of index dial, when people by balance nut adjust pointer be aligned zero graduation line when, refer to The light that generating laser sends is sheltered from by pin, so that the light that generating laser sends can not on the zero graduation line of index dial Form luminous point.This regulative mode, people only need to see that having or not luminous point on zero graduation line can determine whether that Physical Experiment balance returns to zero Whether mix up, degree of accuracy is high, error is little.

Above-described embodiment is the illustration of utility model, should not be with the exemplary embodiments description limit of description and accompanying drawing The protection domain of patent right processed.

Above in conjunction with accompanying drawing, this utility model preferred embodiment and embodiment are explained in detail, but this Utility model is not limited to the above-described embodiment and examples, in the ken that those skilled in the art possess, also may be used So that various changes can be made without departing from the concept of the premise utility.In the claims, should not will be located between bracket Any reference markss as limitations on claims.Word "comprising" does not exclude the presence of element not listed in the claims Or step.The use of word first, second and third class does not indicate that any order, these words can be construed to title.

Claims

1. a kind of Physical Experiment balance it is characterised in that include base, position-limited rack, overarm, pallet, balance nut, bearing support, Index dial, pointer, rider, scale, measuring cup and counterpoise；

Described bearing support is fixed on described base；

Described position-limited rack is two, is fixed on described base and is located at the both sides of described bearing support；

Described overarm is flexibly connected with bearing support by connecting shaft；

Described pallet is two, positioned at the both ends of described overarm, and is located at the surface of described position-limited rack；

Described balance nut is two, positioned at the both sides of described overarm, is connected with overarm by screw mandrel；

Described index dial is fixed on the top of described bearing support, and described pointer is flexibly connected with bearing support by connecting shaft；

Multiple furry projections are evenly distributed with the inner surface of described measuring cup, described furry projection and described measuring cup are one Body, the distance between adjacent described furry projection is less than the diameter of hydrone；

Described measuring cup and described counterpoise are located in two described pallets respectively；

The quality of described counterpoise is equal with the quality of described measuring cup.

2. Physical Experiment balance according to claim 1 is it is characterised in that also include flexible pipe of shaping, described sizing flexible pipe One end be fixed on described bearing support；The other end is provided with convex lenss and LED.

3. Physical Experiment balance according to claim 1 and 2 is it is characterised in that be provided with pipe level on described bearing support Device.

4. Physical Experiment balance according to claim 1 is it is characterised in that be provided with Laser emission on described index dial Device, the zero graduation line just to described index dial for the described generating laser, described pointer is sent out with described laser positioned at described index dial Between emitter.