CN88210100U

CN88210100U - Portable spring scale

Info

Publication number: CN88210100U
Application number: CN 88210100
Authority: CN
Inventors: 孙晓君; 吴浩; 刘传杰
Original assignee: SHENYANG MUNICIPAL TOOLS RESEARCH INST
Current assignee: SHENYANG MUNICIPAL TOOLS RESEARCH INST
Priority date: 1988-01-29
Filing date: 1988-01-29
Publication date: 1988-11-23

Abstract

The utility model discloses a civil scale, which is composed of a transverse beam, a balance weight and a component for hanging articles. The civil scale is characterized in that the transverse beam is an oblate body; a shaft at the pivot point is connected with a pointer; a track formed on the transverse beam of the oblate body by the pointer end rotating along the pointer is taken as the quality calibration. The weighed article and the balance weight are made automatically achieve the balance when weighing so that the weighing result can be read via the pointer. The utility model has the advantages of convenient operation, easy portability, simple structure and easy fabrication.

Description

Portable spring scale

The weighing apparatus that the utility model belongs to a kind of mechanical application weights is scale, is suitable for civilian.

Steelyard is the most common and is the most ancient civilian scale, but it has following deficiency: 1. crossbeam (being the arm beam of steelyard) and counterweight (being thallium) will be come the balance arm beam of steelyard by the slip thallium during weighing movingly, and the thallium that for this reason will slide repeatedly is cumbersome; 2. error is big: it is the reading pointer with the lanyard of thallium, and thallium one slides slightly, and reading will distortion, and lanyard distortion or the coarse distortion in readings that also easily causes; 3. its arm beam of steelyard is longer, carries not very convenient.

The purpose of this utility model just is to provide a kind of improved civilian scale, and it can overcome the above-mentioned deficiency of steelyard.

The purpose of this utility model is achieved in that it comprises counterweight, the extension object at crossbeam and crossbeam two ends, and fulcrum is on the crossbeam between counterweight, extension object, and fulcrum place axle connects handle, and quality scale is indicated on the crossbeam, it is characterized in that: a, crossbeam are oblate body; B counterweight, extension object are that symmetric points are symmetrically placed in the oblate body outer with this oblate body crossbeam center of circle; C, fulcrum are between the interface of counterweight and extension object and oblate body crossbeam and near the interface of hanging object and oblate body crossbeam, promptly at oblate body crossbeam eccentric part; The pointer of axle connection one of d fulcrum place and handle rotational synchronization; F makes quality scale along the pointer arc track that its pin end forms when fulcrum rotates on the oblate body crossbeam.Its principle is: claimed thing and the counterweight balance to the square of fulcrum by claiming thing and counterweight to make the oblate body crossbeam rotate to reach around fulcrum naturally during weighing.The angle that the oblate body crossbeam turns over during a certain amount of balance that is claimed the thing mapping also is certain, and also, the variable quantity that is claimed thing variable quantity and oblate body to turn over angle is single-valued function relation (for the monodrome trigonometric function concerns).So, the relative oblate body crossbeam of pointer around the corner variable quantity of fulcrum with claimed the thing variable quantity also to be value bit function to concern, just can indicate continuous mass value so pointer rotates the arc track that the hour hands end forms around fulcrum relative to the oblate body crossbeam on the oblate body crossbeam.Like this, just arc track is made quality scale whereby, just can make things convenient for when being claimed thing and counterweigh and reads weighing result by pointer exactly.

The utlity model has advantages such as weighing is convenient, error is little, carrying convenience, simple structure, easy manufacturing.

Embodiment of the present utility model is provided by accompanying drawing 1,2, below in conjunction with detailed description the utility model.

Fig. 1 is a kind of concrete structure synoptic diagram of the utility model.

Fig. 2 is the another kind of concrete structure synoptic diagram of the utility model.

Example 1 as shown in Figure 2, by oblate ring 3, fan dial 2 consists of the oblate body crossbeam, oblate ring 3 is made interface 4,9 to connect counterweight 5 respectively, hang object 7, interface 4,9 are symmetrical in oblate ring 3 centers of circle, fulcrum 8 is located at interface 4, between 9 lines and near on the oblate ring 3 of interface 9, also be the flat heart place of fulcrum 8 at the oblate body crossbeam, handle 1 and pointer 6 are connected in fulcrum 8 for one (to keep rotational synchronization) and at the end axle that links, the center of circle of fan dial 2 is passed fulcrum 8 and is fixed on the oblate ring 3, and its high scale just rotates the track of hour hands end on fan dial 2 along being around in pointer 6 around fulcrum 8.During weighing, claimed thing to hang on the object 7, when oblate ring 3 no longer rotates, just can on fan dial 2, be read weighing result by pointer 6.

Example 2 as shown in Figure 2, its structure is basic identical with example 1, just the connecting mode of counterweight 5 is slightly different: the former is with rope or to link up with counterweight 5 be to be hung on interface 4 places, and the latter directly is fixed on counterweight 5 on the oblate ring 3 at interface 4 places.This some difference makes the former can change counterweight 5 thereby the scope of weighing is convenient to enlarge, and the latter is easy to carry.

Claims

1, a kind of civilian scale, comprise crossbeam and crossbeam two ends counterweight, hang object, fulcrum in counterweight, hang on the crossbeam between object, fulcrum place axle connects handle, quality scale is indicated on the crossbeam, it is characterized in that:

The a crossbeam is the oblate body crossbeam;

B oblate body crossbeam connects counterweight respectively, hangs object at interface 4,9 places;

The c fulcrum is on interface 4,9 lines and near interface 9;

The pointer of axle connection one of d fulcrum place and handle rotational synchronization;

F makes quality scale along the pointer arc track that its pin end forms when fulcrum rotates on the oblate body crossbeam.

2, by the described civilian scale of claim 1, it is characterized in that: counterweight is hung on interface 4 places with rope or hook system.

3, by the described civilian scale of claim 1, it is characterized in that: directly counterweight is fixed on the oblate body crossbeam at interface 4 places.

4, by the described civilian scale of claim 1, it is characterized in that: handle and pointer are become one at the fulcrum place.

5, by the described civilian scale of claim 2, it is characterized in that: handle and pointer are become one at the fulcrum place.

6, by the described civilian scale of claim 3, it is characterized in that: handle and pointer are become one at the fulcrum place.

7, by the described civilian scale of claim 1～6, it is characterized in that: the oblate body crossbeam is made up of oblate ring 3 and the fan dial 2 that is fixed on the oblate ring 3, and fulcrum is passed in the center of circle of fan dial 2 and its scale of improving quality just rotates the track of hour hands end on fan dial 2 along being around in pointer around fulcrum.