CN2063627U

CN2063627U - Automatic balancing gravity balance

Info

Publication number: CN2063627U
Application number: CN 89217250
Authority: CN
Inventors: 池洪
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-09-19
Filing date: 1989-09-19
Publication date: 1990-10-10

Abstract

An automatic balance gravity balance with new mechanism is composed of balance scale (or hook) (1), pointer (9), digital display plate (11), weight (8) and a gear, rack and cam drive mechanism for realizing automatic balance and automatic display. The weight (8) and the gear, rack and cam transmission mechanism are all sealed in a scale box (10). Has the advantages of simple structure, beautiful appearance, accurate weighing, high reliability, difficult cheating, convenient carrying and use, wide application range and the like. And can be made into a hanging type, a table type or other various types and specifications according to actual requirements.

Description

Automatically balanced gravity balance

The utility model belongs to field of measuring techniques, and the gravity that relates to a kind of weighed object body and function claims.

The gravity of a large amount of weighed object body and functions of using claims it is that a kind of ancient drum of carrying claims (being commonly called as bar claims) on the present market at home, and it has characteristics such as simple in structure, easy to carry.But because that this title is made is coarse, in use exist resolution lower, defective such as error is bigger.Particularly the accuracy checking of this title (vouching discoctaster) can not be carried out at any time, thus at least can on the weighing lever, claim on the thallium, practise fraud on the pan of a steelyard.So the trust of this title in people of using on the market is relatively poor, in order to reduce dispute, market control departments has to be provided with checking scale or sends the special messenger to manage on market.

Though a kind of spring holder that use the foreign market claim than home market institute generally the bar of use claim to have certain advantage, but because the design of this spring balance dial plate in a large amount of the manufacturing is fixed, in order to reduce the error of repelication, the Hooke's law characteristic unanimity that just must make each spring have, this has all proposed very high requirement to its manufacturing process, material selection and manufacturing accuracy.Nonetheless, when temperature changed, changing also can appear in the characteristic of spring, thereby the error of repelication of this title is bigger.Moreover, this title weighing be the weight (not being the quality of object) of object, its numerical value can change along with the variation of gravity acceleration g.

It is accurate, with a high credibility that the utility model is exactly a kind of weighing of developing at above-mentioned situation, is difficult for cheating, carries, self-poise gravity easy to use claims.

The utility model is mainly by pan of a steelyard 1(or title hook, hereinafter to be referred as pan of a steelyard), pointer 9, digital display dial 11 claims that thallium 8 and the gear train of being made up of gear 4, tooth bar 2, cam 6 etc. are constituted.Its middle gear 4, cam 6 and pointer 9 are contacted mutually by concentric shafts 13.Claim that thallium 8 is connected with the periphery of cam 6 by a flexible connecting member 7, this web member 7 is reeled by the periphery of cam 6 with the rotation of cam 6.Transmission cooperates requirement when tooth bar 2 stressed effects are mobile, and the driven feasible title thallium 8 of cam 6 increases to the vertical range of concentric shafts thereupon.Its course of work as shown in Figures 1 and 2.When on the pan of a steelyard 1 when unloaded, be 0 in order to ensure the position of pointer 9 on digital display dial 11, a static equilibrium counterweight 12 can be set on cam 6; When being placed with on the pan of a steelyard by title thing 15, tooth bar 2 pressurizeds that are installed on the pan of a steelyard 1 glide, and driven gear 4 rotates, rotate with gear 4 coaxial mounted cams 6 and pointer 9 thereupon, owing to reeled by cam 6 peripheries with the rotation of cam 6 with the web member 7 that cam 6 peripheries are connected, so claim thallium 8 to change along with the rotation of cam 6 to the vertical range of concentric shafts 13 with claiming thallium 8.When cam 6 forwards certain position to, by being claimed thing 15, the moment field that claims thallium 8 and concentric shafts 13 to be formed to reach balance, tooth bar 2, gear 4, cam 6, pointer 9 stop operating, at this moment, pointer 9 on digital display dial 11 shown numeral, be the weight that is claimed thing.

The utility model can be made according to actual needs and hang various ways and plurality of specifications such as pull-type or desk-top.

Accompanying drawing 3 is a specific embodiment of the present utility model.Its gear train and title thallium 8 of being made up of gear 4, tooth bar 2, cam 6 all is sealed in the title case 10.Pointer 9 is installed on the concentric shafts 13 and is exposed to and claims 10 outside mutually.Digital display dial 11 is fixed on the title case 10 of pointer 9 back.At the translucent cover 14 that claims to be equipped with on the case 10 a protection pointer 9 and digital display dial 11.Tooth bar 2 is connected under the pan of a steelyard 1.In order to keep tooth bar 2 to move up and down, between tooth bar 2 and title case 10, bearing 3 is installed with the pan of a steelyard pressurized.Two close ends in concentric shafts 13 are equipped with bearing 5.Flexible connecting member 7 is a flexible steel sheet, and an end joins with title thallium 8, and the other end and cam 6 peripheries are joined, and are wound on the periphery of cam 6 along with the rotation of cam 6 in order to guarantee flexible connecting member 7, can make convex to the periphery of cam 6.Claim that thallium 8 is that a process is calculated the tup of having determined weight, in order to prevent to ooze false cheating, can carry out it hardening heat and handle.

Autobalance gravity according to the utility model manufacturing claims, in the lever principle that principle adopts Chinese bar to claim, utilizes mass ratio than rule, and its weighing results does not change with the variation of acceleration of gravity and the variation of ambient temperature; In the advantage that design type is got spring balance, have simple in structurely, aesthetic in appearance, the advantage such as weighing is accurate, and is with a high credibility, be difficult for cheating, portably uses conveniently, and the scope of application is extensive.

Claims

1, a kind of by pan of a steelyard [1], pointer [9], digital display dial [11], the self-poise gravity that claims thallium [8] and gear train to form claims, it is characterized in that: described gear train is made of with the gear [4], the cam [6] that are installed on the same concentric shafts [13] the tooth bar [2] that is connected under the pan of a steelyard [1], and described title thallium [8] is connected with the periphery of cam [6] by a flexible connecting member [7] that connects thereon, tooth bar [2] and gear [4] are formed transmission and are cooperated, concentric shafts [13], gear [4], cam [6] are formed the same through-drive of rigid attachment.

2, claim as claims 1 described self-poise gravity, it is characterized in that: described cam ［ 6 ］ connection has static equilibrium counterweight ［ 12 ］, described flexible connecting member ［ 7 ］ is a flexible steel sheet.

3, claim as claim 1,2 described self-poise gravity, it is characterized in that: described gear, tooth bar, cam drive and title thallium are sealed in and claim in the case ［ 10 ］; The concentric shafts ［ 13 ］ that is mounted in described pointer ［ 9 ］ goes up and is exposed to title case ［ 10 ］ outside; Described digital display dial ［ 11 ］ is fixed on the title case ［ 10 ］ of pointer ［ 9 ］ back.

4, claim as claim 1,2 described self-poise gravity, it is characterized in that: described title thallium ［ 8 ］ is made after handling through hardening heat; The periphery of described cam ［ 6 ］ is concavity.

5, self-poise gravity as claimed in claim 3 claims, it is characterized in that: described title thallium ［ 8 ］ is made after handling through hardening heat; The periphery of described cam ［ 6 ］ is concavity.

6, claim as claim 1,2 described self-poise gravity, it is characterized in that: between described tooth bar ［ 2 ］ and described title case ［ 10 ］, bearing ［ 3 ］ is installed, bearing ［ 5 ］ is installed at described concentric shafts ［ 13 ］ two close ends.

7, self-poise gravity as claimed in claim 3 claims, it is characterized in that: between described tooth bar ［ 2 ］ and described title case ［ 10 ］ bearing ［ 3 ］ is installed, at described concentric shafts ［ 13 ］ two close ends bearing ［ 5 ］ is installed.

8, self-poise gravity as claimed in claim 4 claims, it is characterized in that: between described tooth bar ［ 2 ］ and described title case ［ 10 ］ bearing ［ 3 ］ is installed, at described concentric shafts ［ 13 ］ two close ends bearing ［ 5 ］ is installed.