CN2462364Y - Novel steelyard - Google Patents

Abstract

The utility model relates to a novel steelyard which is the improvement of a wooden steelyard. The utility model is characterized in that a lever principle is still made use of; a scale pan (1), a steelyard hook (4) and two knife-edge support are reserved; only a scale beam (11) is changed into a round steel tube, a plane is drawn from a tube side and a marking line is engraved to replace steelyard stars; a weight (9) is changed into a cylindrical weight which is provided with a hole that is same with the cross section of the balance bar (11) and the balance bar (11) penetrates through the hole; a counterweight (13) clogs a steelyard tail, so the can not be taken out but only can move along the balance bar; the waist part of the weight is provided with a 0-line window, from which the marking line engraved on the balance bar is exposed; the steelyard is used for weighing, the weight is moved to reach a moment balance, and a numeral value on a 0-line relative to the marking line is the weight of an article. The novel steelyard can overcome the defect of falsification which is easily generated through a wooden steelyard.

Description

Novel steelyard

The utility model relates to a kind of steelyard of weighing article weight, belongs to the weights and measures technical field.

At present, the wood steelyard of measuring Item Weight on the market is the check weighing utensil of making according to lever balance theory, steelyard is a science very in principle, but, in all age the structure of wood steelyard, material and manufacture craft are still based on craft, and material and structure almost have no to improve, and cause the measuring accuracy of wood steelyard not high, practise fraud easily.For example the arm beam of steelyard is made of timber (minority aluminium), heart portion can be bored emptyly, injects the iron bullet, shuts two ends, when buying goods and claim into, forces down the scale tail, and the iron bullet flows to tail end formation large scale and advances.Otherwise, then raise the scale tail when selling goods and weighing up, the iron bullet flows to arm beam of steelyard front end and becomes little scale again and go out, because the timber acoustic is poor, is difficult for discovering out.In addition, the gradations marked on the beam of steelyard of wood steelyard are subsection hole-drillings by hand, show weight numerical value after hammering into aluminium (copper) matter circle silk polishing slyness again, its degree of accuracy is very poor, and the diameter that adds every gradations marked on the beam of steelyard is all in a millimeter, the close together between star and the star, the formation gradations marked on the beam of steelyard gather, and are difficult to identification.

The support column of wood steelyard (being commonly called as the edge of a knife) is that riveted joint is followed closely on rod, knocks a little with regard to variable activity supporting point position, can cause large scale to advance little scale again and go out, and leads other people into a trap.

Sliding weight of steelyard is the mobile weights of scale, and its quality size directly influences the degree of accuracy of scale.The sliding weight of steelyard of wood steelyard is cast with casting pig, casting flaw all can make the sliding weight of steelyard weight of same mould casting not of uniform size as sand holes, pore, shrinkage porosite, loose slag inclusion etc., for the weight that makes each sliding weight of steelyard reaches specialized range, holing in bottom to overweight sliding weight of steelyard, removes excess weight; Underweight sliding weight of steelyard is then reached requirement at waist boring back filling lead.The technology of this boring leaded is also for the counterfeiter provides convenience, and they are the changeable lead also, harms others to benefit oneself.Sliding weight of steelyard is connected with rope with the arm beam of steelyard, and one can join three stone rollers to scale, a standard stone roller, in addition two one heavy one light, with big stone roller, the little stone roller of shipment is cut or polish jade with an emery wheel with standard during the industrial and commercial bureau inspection when stocking up.In addition, the diameter of sliding weight of steelyard rope is thicker, and during weighing, the sliding weight of steelyard rope is pressed on the gradations marked on the beam of steelyard, whether is pressed in the center, also often disputes.

In order to enlarge the measurement range of scale, the fulcrum of scale has two, and first fulcrum is located at arm beam of steelyard low order end, is commonly called as the head milli, and its gradations marked on the beam of steelyard are on arm beam of steelyard back; Second fulcrum is located at the arm beam of steelyard stage casing of keeping right, and is commonly called as two millis, and its gradations marked on the beam of steelyard are at arm beam of steelyard medial surface, when claiming thing, and seller's weigh scale, the buyer cannot see gradations marked on the beam of steelyard, says how much what are by the seller, if the buyer will see scale, then will turn to the buyer to gradations marked on the beam of steelyard, and is very inconvenient.Lifting cord of a steelyard rope should be rope, but has the people to change the scale Bo rope of a Bo into very thick iron wire, also can account for other cheap.

Although there is above-mentioned shortcoming in wood steelyard, often to be complained by the consumer,, low price easy to carry because of its use is loved by the people.Industrial and commercial administration department wants to eliminate steelyard, uses platform balance instead and all fails steelyard is disappeared on market.How to improve steelyard, it can be existed down on market is the problem of this patent research.

The purpose of this utility model provides a kind of process architecture advances, selects the high-test metal material for use, adopts modern advanced manufacture craft, can improve measuring accuracy, prevents to practise fraud to replace the novel steelyard of old-fashioned wood steelyard.

The purpose of this utility model is achieved in that the novel arm beam of steelyard adopts steel cylindrical tube to replace traditional conical wooden arm beam of steelyard.The cross sectional shape of the novel arm beam of steelyard is designed to " bow " shape, be about to the cylinder steel pipe along drawing out the rectangle parallel plane on the axis total length, the gravimetric value that utilizes this plane that two fulcrums (head milli and two millis) of scale should be represented is carved into two row's grooves respectively, the alleged gravimetric value of outside one row's expression first fulcrum (head milli); The gravimetric value of the alleged article of second fulcrum of the inside one row's expression (two millis).To have the plane of groove to make progress during assembling, the both parties of weighing article can both see alleged weight.Groove is scribed on dividing machine, and lines are very thin, than wood steelyard by hand segmentation follow closely very thick gradations marked on the beam of steelyard again, its manufacturing accuracy and measuring accuracy have all improved many.

The sliding weight of steelyard configuration design of novel steelyard is become cylindrical, in one of the eccentric position processing and the sliding weight of steelyard parallel axes of end face, the oblate slotted hole that shape is identical with arm beam of steelyard xsect, the arm beam of steelyard just is through in the hole, makes sliding weight of steelyard become to be slidingly matched on the arm beam of steelyard.The material of sliding weight of steelyard adopts steel, and appearance is made bright and clean, no boring, soldering, damaged vestige, and appearance hardness behind thermal treatment, hard chrome plating is higher, the profile of malleable sliding weight of steelyard even adopt machining process to revise profile, does not increase and decrease sliding weight of steelyard weight and is easy to find out weak point yet.The sliding weight of steelyard eccentric orfice leaves a rectangular watch window to the thinnest waist of cylindrical wall thickness, and the groove on the arm beam of steelyard plane reveals from window.Be carved with zero line on the interior lateral surface of watch window, during weighing, mobile sliding weight of steelyard, zero line is aimed at the groove on the arm beam of steelyard, just can read the weight of alleged article.In order to improve measuring accuracy, can as the vernier caliper of measuring length dimension, make main scale and the secondary chi of vernier, soon the groove on the arm beam of steelyard is as master calibration, the scale that carves on the sliding weight of steelyard view window is as the secondary scale of vernier, such design can be read the following gravimetric value of 50 grams, the i.e. gravimetric value of two following money in the Chinese scale of weights.Sliding weight of steelyard is sleeved on the arm beam of steelyard, arm beam of steelyard two ends is shut with plug again, and sliding weight of steelyard can only move on the arm beam of steelyard and can not unload, and prevents to change big or small sliding weight of steelyard effectively.On the novel sliding weight of steelyard locking device is arranged, during measurement, sliding weight of steelyard moves on the arm beam of steelyard, and reaching equalising torque can be locked in sliding weight of steelyard on the arm beam of steelyard, is convenient to reading.

The net weight of the novel arm beam of steelyard, sliding weight of steelyard, the scale pan and other part and the fulcrum position on the arm beam of steelyard, when making, all allow certain deviation range, during general assembly, can carry out counterweight with arm beam of steelyard two ends plug, make novel steelyard can reach higher precision their compensatory approach.

The fulcrum of novel steelyard still adopts the triangle edge of a knife and circular drop handle.During making,, can prevent the fulcrum displacement, influence measuring accuracy being welded on the arm beam of steelyard behind the fulcrum edge of a knife location.

The heavy weight article of wood steelyard weighing, scale will be done very greatly, and novel steelyard can calculate the gap length of gravimetric value groove and the ratio of sliding weight of steelyard weight according to lever principle, can carry additionally the weights stone roller on the sliding weight of steelyard of little scale, make little scale also can claim heavy weight article.

It is easy to carry that novel steelyard by technique scheme design had both kept steelyard, and simple operation and other advantages has overcome the disadvantage that wood steelyard exists again, makes steelyard can continue as people and likes.

The utility model is described in further detail below in conjunction with drawings and Examples.

In the accompanying drawing: 1. block up 4. steelyard hooks, 5. drop handles, 6. sustained rings, 7. edge of a knife posts, 8. lifting cord of a steelyard ropes, 9. sliding weight of steelyards, 10. lock screws, 11. arm beams of steelyard, 12. level meters, 13. counterweights before the scale pan 2. scale pan ropes 3.

The scale pan (1) generally is designed to disc, also can be made into dustpan-shapedly, and three mounting holes are arranged on the scale pan (1), and an end of three scale pan ropes (2) ties up on the scale pan respectively; The other end gathers the back and steelyard hook (4) ties up on the drop handle (5) together.Preceding stifled (3) are welded in the front end of the arm beam of steelyard (11), seal the hollow arm beam of steelyard and the counterweight effect that plays the fulcrum front end.

Triangle is made at the two ends of three edge of a knife posts (7), and drift angle becomes the fulcrum (being commonly called as the edge of a knife) of steelyard on same axis.Two same annular aperture are on an axis also arranged on the sustained ring (6).It is exactly the supporting position of fulcrum (edge of a knife).Edge of a knife post (7) passes the fulcrum that forms first fulcrum (head milli), second fulcrum (two millis) and the weight (scale pan) of scale in three holes of the annular aperture of sustained ring (6) and the arm beam of steelyard (11).The edge of a knife is that line contacts with the fulcrum that the supporting annular distance is formed, and again through bakingout process, hardness is higher, and as the fulcrum of lever principle, reaction is very sensitive.

The novel arm beam of steelyard (11) is made of weldless steel tube, for first fulcrum (head milli) and second fulcrum (two millis) are shown that the groove of weight numerical value can both be engraved in the back of the arm beam of steelyard (11), during making, side with the tubular arm beam of steelyard, draw out the rectangle parallel plane, make the xsect of the arm beam of steelyard become oblate " bow " shape (shown in the accompanying drawing).Just can carve two row's grooves on the plane, the gravimetric value groove of first fulcrum (Bo) is engraved in the outside, second fulcrum (two milli) be engraved in the inboard.When making novel steelyard weighing, both parties can both see shown weight numerical value.

Sliding weight of steelyard (9) is cylindrical, draw out along the eccentric axis place one with parallel axes, oblate " bow " shape hole that shape is identical with arm beam of steelyard xsect, the arm beam of steelyard just passes this hole, and sliding weight of steelyard can be slided on the arm beam of steelyard.Open a shape of a saddle watch window above the sliding weight of steelyard waist, the groove on the arm beam of steelyard plane clearly reveals from window.Be carved with benchmark " 0 " line on view window two side planes, the steelyard of micron order is then carved the secondary chi line of vernier, during the weighing article, mobile sliding weight of steelyard reaches equalising torque, and the numerical value that " 0 " line is relative with groove on the arm beam of steelyard is the weight of alleged article.Lock screw (10) is equipped with in the below of sliding weight of steelyard, can effectively sliding weight of steelyard be locked on the arm beam of steelyard.

Novel bar claims the weight of various parts in manufacture process all to allow certain tolerance value, and during assembling, the counterweight (13) that cumulative errors will be leaned on arm beam of steelyard tail end is balance in addition.During the assembling verification, portable second fulcrum (two Bos) lifting cord of a steelyard rope (8), with the zero line on the zero line aligning arm beam of steelyard (11) of sliding weight of steelyard (9), at this moment, the moment at the fulcrum two ends of scale should equate, the arm beam of steelyard (11) is horizontal, and the level meter of arm beam of steelyard tail end (12) bubble is in the centre position, scale allocate star be qualified.Otherwise, should select suitable counterweight (13) else and reach till the equalising torque.After counterweight is selected, it is welded in arm beam of steelyard tail end.Prevent cheating.Novel steelyard through the foregoing description is made replaces old-fashioned wood steelyard surely, becomes check weighing measurer of new generation.

Claims (1)

1. A kind of novel steelyard is made up of the scale pan (1), steelyard hook (4), sustained ring (6), edge of a knife post (7), the arm beam of steelyard (11) and sliding weight of steelyard (9), it is characterized in that: the arm beam of steelyard is a steel cylindrical tube, the steel pipe side is drawn into parallel plane, carve the gravimetric value groove on the plane, have a hole identical with arm beam of steelyard xsect on the sliding weight of steelyard, the arm beam of steelyard penetrates in the hole, and sliding weight of steelyard becomes to be slidingly connected with the arm beam of steelyard, the sliding weight of steelyard waist has a window of carving 0 line, and the groove on the arm beam of steelyard reveals from window.

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