CN2263335Y

CN2263335Y - Spring scale dial

Info

Publication number: CN2263335Y
Application number: CN 96229015
Authority: CN
Inventors: 徐京; 王家栋
Original assignee: SUZHOU WEIGHING APPARATUS FACTORY
Current assignee: SUZHOU WEIGHING APPARATUS FACTORY
Priority date: 1996-01-04
Filing date: 1996-01-04
Publication date: 1997-09-24
Anticipated expiration: 2006-01-04

Abstract

The utility model relates to a metering instrument, particularly a spring dial crane scale which can indicate a weighing result on two faces. The utility model adopts the structure that a machine core framework is composed of a front and a rear cleats, an upper and a lower positioning plates and a positioning post; a weighting spring, a load bearing frame, a front and a rear dials, an indicating needle for weighing indication, a temperature compensation mechanism and other metering functional pieces are installed on the machine core framework to form a machine core, a lifting ring is installed on the upper end of the upper positioning plate of the framework, and a scale pan or a hook is arranged on the lower part of the load bearing frame. The utility model has the advantages of simple structure, accurate metering and convenient movement and use, and can be hung to use in markets.

Description

Spring scale dial

The utility model relates to the Spring scale dial of the two-sided indication weighing result of a kind of energy in the measurement instrument.

At present, normally used two-sided desk-top spring scale scale among the public owing to all adopt the pressure type support mechanism on its structure, when table top tilts, the weighing error of indication can occur.In addition, the influence of bringing for the weighing spring of environment for use difference variation also can influence the accuracy of weighing.Though adopted temperature compensation mechanism on some spring balance at present, structure is also not quite reasonable yet.

The purpose of this utility model provides the two-sided Spring scale dial that a kind of error in dipping is little, be particularly suitable for suspension use in the commerce and trade fairground.

The purpose of this utility model can realize by following technical solution: the Spring scale dial of the two-sided indication weighing result of energy, by two parallel front and back clamping plate, location-plate, reference column are formed core framework up and down, function of measuring spares such as weighing spring, bearing frame, former and later two index dials and weighing indication pointer are installed in and form movement on the core framework, suspension ring are equipped with in the upper end of location-plate on framework, are provided with the scale pan or suspension hook in the bottom of bearing frame.In order further to reduce the influence of circumstance of temperature difference to weighing result, the utility model is provided with the temperature compensation mechanism of being made up of a bimetallic strip and straight, oblique angle iron, vertical connecting rod and fork on core framework, one end of bimetallic strip is fixed on the corner strap and fork forms one, the other end is connected with fork by oblique angle iron, one end of fork is hinged on the clamping plate of front and back, the other end is hinged with the tooth bar that drive two pointers rotate simultaneously, and is hinged with the vertical connecting rod that is fixed on the bearing frame (12) at the corner strap place.

Because the utility model changes the support mechanism of going up pressure type in the prior art support mechanism of pull-down into, metering performance is further improved and improves, and moves and easy to use; Movement of the present utility model is one can be separated with shell and realize that the independent structure member of function of measuring, suspension ring directly link with last location-plate, and the scale body case is not stressed, simple and reasonable; Temperature compensation mechanism compact conformation of the present utility model has improved the accuracy of metering.

Below by embodiment the utility model is further described.

Fig. 1 is the structural drawing of an embodiment of the utility model.

Fig. 2 is the synoptic diagram of the utility model temperature compensation mechanism.

Referring to Fig. 1, the utility model is a kind of movement and the separable scale structure of shell, wherein movement is a relatively independent mechanism, and it forms a core framework by front and back clamping plate 14 and last location-plate 8, following location-plate 15 and reference column 4, and all function of measuring spares all are installed on the core framework.Movement of the present utility model is covered with shell 3, and it is by the ABS plastic injection molded, and shell 3 is fixed on the core framework by connecting rivet.During no weight, spring tension makes bearing frame 12 be in upper limit equilibrium position to the utility model, pointer 13 nullings on the scale pan 1 or suspension hook 2; When placing weight on the scale pan 1 or the suspension hook 2, gravity acts on metering spring 6 by bearing frame 12, metering spring 6 is stretched, the displacement of bearing frame 12 drives tooth bar 10 by transmission rod, and gear 11 is rotated, rotate simultaneously thereby drive two pointers 13, when the gravity of spring tension and weight balances each other, on former and later two index dials 5, demonstrate weight.

The installation site of temperature compensation mechanism 7 of the present utility model such as Fig. 1, its structure as shown in Figure 2, one end of oblique angle iron 16 connects with bimetallic strip 18, the other end of bimetallic strip 18 connects with corner strap 19, and hinged by corner strap 19 and vertical connecting rod 21, and the other end of oblique angle iron 16 and fork 17 riveted joints, an end and the front and back clamping plate of fork 17 are hinged, the other end and tooth bar 10 are hinged, are connected with balancing weight 20 by rivet on tooth bar 10.When variation had taken place the environment for use temperature of the utility model product, this device was offset because temperature variation makes the error in dipping that stiffness variation caused of metering spring 6 than changing by the arm of the caused fork 17 of the deformation of bimetallic strip 18.

Claims

1. the Spring scale dial of the two-sided indication weighing result of energy, comprise metering spring (6), bearing frame (12), former and later two index dials (5) and metering indication pointer function of measuring spares such as (13), it is characterized in that: by two parallel front and back clamping plate (14), location-plate (8 up and down, 15) and reference column (4) form core framework, function of measuring spare is installed in and forms movement on the core framework; Suspension ring (9) are equipped with in the upper end of location-plate on framework (8), are provided with the scale pan (1) or suspension hook (2) in the bottom of bearing frame (12).

2. Spring scale dial according to claim 1, it is characterized in that: core framework is provided with by a bimetallic strip and straight, oblique angle iron, the temperature compensation mechanism that vertical connecting rod and fork are formed, one end of bimetallic strip (18) is fixed on last and fork (17) the formation one of corner strap (19), the other end is connected with fork (17) by oblique angle iron (16), one end of fork (17) is hinged on the front and back clamping plate (14), the other end is hinged with the tooth bar (10) that drive two pointers (13) rotate simultaneously, and is hinged at the vertical connecting rod (21) that corner strap (19) is located and is fixed on the bearing frame (12).