CN2364441Y

CN2364441Y - Automatic balance

Info

Publication number: CN2364441Y
Application number: CN 99232695
Authority: CN
Inventors: 吴梅初
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-23
Filing date: 1999-01-23
Publication date: 2000-02-16
Anticipated expiration: 2009-01-23

Abstract

The utility model relates to an automatic balancing device which is reformed from a traditional platform scale. The utility model which is characterized in that the inner part of a cavity above a poise (19) is provided with a drive mechanism which is composed of a miniature motor (1), a worm wheel (2), a worm (3) and gears (5), (6). The drive mechanism is provided with a rolling wheel (7) and a staff gauge (8) which are in rolling fit. The zero point position of the staff gauge (8), and the upper and the lower ends of a collimation frame (12) are respectively provided with micro switches (10), (14) and (15). The utility model fills the middle blank that an electronic scale and a spring scale have small weighing range, and an electron platform scale has high cost. The utility model changes the situation that the operation of a medium size weighing device is manually intervened all along; the utility model is a perfect reformation with high quality and low cost.

Description

Automatic balance

The utility model relates to the weighing apparatus that claims article, is commonly called as platform scale, refers in particular to the Automatic balance that moves sliding weight without hand.

At present, most market, market all are to use traditional platform scale, busy because of purchasing the place, scale props up and uses the frequency height, operating personnel often do not remove sight vane below the quality of weighing article body reaches the very indication of weighing accurately, generally can cause 0.1%～0.6% kilogram error, hand over for this reason and purchase both sides and often quarrel with each other endlessly.

The purpose of this utility model provide a kind of former pound claim to transform on the basis and Automatic balance, when weighing thing, can make sliding weight on scale automatically the location make the scale balance, obtain weight weight quickly and accurately.

The technical scheme that realizes the utility model purpose is such: micromachine and worm gear, worm screw and gear driven mechanism are installed in the cavity above sliding weight, have a roller and scale to roll in the driving mechanism and cooperate, scale zero point the position and the upper and lower end of collimation frame respectively be provided with microswitch.

Ultimate principle of the present utility model is when utilizing scale Zhi Shouchong, and the perk of chi head nature can touch the top and close sight vane top microswitch---the sliding weight energising is just being changeed moved ahead; Outage up and down after the balance---make sliding weight " self-locking " stop walking; After taking object away, the chi head hangs down naturally, can touch pressing bottom microswitch---and make the sliding weight counter-rotating retreat this program setting of making zero.

Advantage of the present utility model:

1, the weighing indication accurately.Busy because of the purchase place, scale props up and uses the frequency height, and operating personnel often do not reach under the situation of the very indication of weighing accurately and off switch (sight vane) in the quality of weighing article body.Generally cause 0.1%～0.5% kilogram error, hand over for this reason and purchase both sides and often quarrel with each other endlessly.And Automatic balance is only reaching the power down source of could breaking under the situation of absolute equilibrium, and sliding weight " self-locking " is stopped.Thereby overcome this drawback effectively.

2, high efficiency.Use contrast through two weighing apparatus simultaneously at the purchase scene that the masses are arranging queue, personnel operation and Automatic balance contrast, and near two to three times, the masses also very convince this latter than the former.

3, reduce labour intensity.I often see that operating personnel increase stone roller by door busy purchase place, stir sliding weight, and record is digital and in a rush.And Automatic balance has enlarged one times because of the scale label value on former 25 kilograms basis, can not need re-use 25 kilograms the stone roller that increases.Example: the villager pays cereal, and greatly between 51～95 kilograms, we put one 50 kilograms the stone roller that increases increasing Tuo Panshang according to the every load of rule, and the maximal value of scale also is 50 kilograms, 100 kilograms of two additions.Therefore, in hundred kilograms of rule range of weighing of this setting, can not need carry out any manual intervention.Where be parked in after only need having a look at the sliding weight outage, write down data just.Enlarge the rule weighing again as need, can add one 50 kilograms the stone roller that increases in addition, so analogize.

Embodiment of the present utility model illustrates by the following drawings.

Accompanying drawing 1 is the outward appearance front view

Accompanying drawing 2 is blade part partial assembly drawings

Accompanying drawing 3 is driving mechanism front views

Accompanying drawing 4 is that Fig. 3 launches cut-open view along A-A

Accompanying drawing 5 is circuit theory reference diagrams

Describe the details of the utility model embodiment below in detail according to accompanying drawing.

The profile that can see it from accompanying drawing 1 is the shape that the tradition pound claims fully, different is that blade has added individual face shield (17), also added a lock on the face shield, the thick rubber of one deck has been wrapped up in the outer ring of its roller (18), in order that prevent fit vibration, because circuit and accurate miniature machinery are equipped with in the portion of being much of.

Accompanying drawing 2 promptly is the blade part of seeing after face shield (6) is opened, blade is divided into three parts, scale (8), sliding weight driving mechanism (19) and sight vane (12), in the top cavity of sliding weight (19), driving mechanism has been installed, below we again by accompanying drawing 3,4 look at the structure of driving mechanism, motor (1) articulates a worm screw (2), worm gear (3) is paid, worm gear (3) and gear (5) are adorned on the same axle, gear (5) and gear (6) engagement, gear (6) is contained on the same axle with roller (7), roller (7) and scale (8) rolling friction, two axles all are contained on the sliding weight cavity cover wall (9).

A microswitch that makes zero (10) is housed on the null position of scale (8), dress sliding weight (19) in the middle of the scale (8), the termination of scale (8) still is in the neutral gear place of collimation frame (12).

The microswitch (13) that advances is adorned in the top of collimation frame (12) neutral gear, and the below of neutral gear is adorned two and retreated microswitch (14) and (15), also adorns move ahead a cut-off switch (15) and a mu balanced circuit plate (16) in the side of collimation frame.

Claims

1, a kind of Automatic balance, claim transformation to form by the tradition pound, interior micromachine (1) and the worm gear (2) installed of cavity that it is characterized in that sliding weight (19) top, the driving mechanism that worm screw (3) and gear (5), (6) are formed, have a roller (7) and scale (8) to roll in the driving mechanism and cooperate, scale (8) zero point the position and the upper and lower end of collimation frame (12) respectively be provided with microswitch (10), (14) and (15).

2, weighing apparatus according to claim 1, the structure that it is characterized in that driving mechanism is: motor (1) articulates a worm screw (2), worm gear (3) is paid, worm gear (3) and gear (5) are adorned on the same axle, gear (5) and gear (6) engagement, gear (6) also is contained on the same axle with roller (7), roller (7) rolls with scale (8) and articulates, and two axles all are contained on the cavity cover wall (9) of sliding weight (19).

3, weighing apparatus according to claim 1 is characterized in that on the null position of scale (8) microswitch that makes zero (10) being housed, the middle suit sliding weight (19) of scale (8), and the termination of scale (8) is in the neutral gear place of collimation frame (12).

4, weighing apparatus according to claim 1, the microswitch (13) that advances is adorned in the top that it is characterized in that collimation frame (12) neutral gear, the below of neutral gear is adorned two and is retreated microswitch (14) and (15), also adorns move ahead a cut-off switch (15) and a mu balanced circuit plate (16) in the side that standard is looked frame (12).