CN2082407U

CN2082407U - Portable dual-pointer disk balance

Info

Publication number: CN2082407U
Application number: CN 90224282
Authority: CN
Inventors: 李宁
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-11-22
Filing date: 1990-11-22
Publication date: 1991-08-07

Abstract

The utility model relates to a portable dual-pointer word disk balance, which is characterized in that two sorts of graduations: the kilogram and the gram are marked on a display word disk. Two groups of gears which are mutually engaged are fixed on a gear frame to be used as a driving device; the downward linear displacement of a rack gear is turned into the circumferential motion, thereby, the kilogram and the gram pointers are driven to rotate for calibrating weighing values. The utility model has the advantages of convenient operation, large measuring range, high precision of weighing values, low cost, small size, etc.

Description

Portable dual-pointer disk balance

The utility model relates to a kind of weighing apparatus, is a kind of pair of pointer letter disk portable balance specifically.

The value of weighing for portable balance shows dial scale more intuitively at present, as the disclosed a kind of portable balance of Chinese patent 90-2061685U, its principle is to hang sliding weight of steelyard at an end of the arm beam of steelyard, the other end is hung steelyard hook, utilize variable angle between the arm beam of steelyard and handle to indicate the weight of testee, the weighing value is that the simple pointer letter disk shows, change range and need change the weight of sliding weight of steelyard or the position of hook.Therefore, this scale uses very inconvenient in the weighing process, and range is little, weighing value instability, and error is also bigger.

The purpose of this utility model will design a kind of easy to usely exactly, and range is big, the value of weighing precision height, and cost is low, two pointer letter disk portable balances that volume is little.

The utility model can be achieved through the following technical solutions:

Showing that letter disk is marked with kilogram and two kinds of scales of gram, tooth rest and sleeve pipe are contained in the housing, the sleeve pipe internal upper part is equipped with damper, a no initial tension spring is equipped with in the bottom, fix two groups of pitch wheels on the tooth rest, the downward displacement of the lines of tooth bar that is fixed on the spring pressuring plate is transformed into garden Zhou Yundong, thereby drives kilogram and the rotation of gram pointer.In two groups of pitch wheels, driving wheel and wheel and rack both sides, location are meshed, and the number of teeth, the modulus of driving wheel and gram pin gear equate that the number of teeth, the modulus of power wheel and kilogram pin gear equate, driving wheel is coaxial with power wheel, and the gram axle sleeve is on the kilogram wheel shaft.Piston rod on the damper, spring pressuring plate and connecting rod are one.

Two pointer letter disk portable balances that the utility model proposed, can on letter disk, show kilogram and two kinds of values of weighing of gram simultaneously, measuring accuracy can reach international OIML grade III Standard, its maximum range can reach 10 kilograms, I reaches 200 grams, about about 400 grams, it is little to have a volume, can carry greatly for weight.

Accompanying drawing 1 is the external form figure with two pointer letter disk portable balances

Accompanying drawing 2 is I-I cut-open views of accompanying drawing 1

Accompanying drawing 3 is transmission structures figure of two pointer letter disk portable balances

Accompanying drawing 4 is weighing device sectional structure charts of two pointer letter disk portable balances

Being described in further detail below in conjunction with accompanying drawing, also is most preferred embodiment of the present utility model.

Two pointer letter disk portable balances that the utility model proposed are by display device, and gearing and weighing device constitute.In display device, the demonstration letter disk (2) that is fixed on the housing (1) is marked with kilogram and two kinds of scales of gram, as shown in Figure 1, the outer ring is the gram scale, and the number of divisions is 100, rod interval 10g, inner ring is a kilogram scale, and the number of divisions is 10, rod interval 1kg, when gram pin (3) rotated a week, kilogram pointer (4) rotated a rod interval.Kilogram pointer (4) is fixed on kilogram wheel shaft (15), gram pointer (3) is fixed on the gram wheel shaft (16), as shown in Figure 3, gram wheel shaft (16) is enclosed within on kilogram wheel shaft (15), driving wheel (8) is coaxial with power wheel (7), and kilogram wheel (6) and gram wheel (5) are meshed with driving wheel (8) and power wheel (7) respectively, is complementary for guaranteeing the angle that gram pin (3) and kilogram pin (4) rotate, adopt the number of teeth of driving wheel (8) and gram pin gear (5), modulus equates; The number of teeth of power wheel (7) and kilogram pin gear (6), the mode that modulus equates.Be the driving error that prevents that tooth bar (9) transversal displacement from producing, by axle be fixed on locating wheel (10) on the tooth rest (14) and driving wheel (8) respectively be fixed on spring pressuring plate (13) on the both sides of tooth bar (9) be meshed, also the displacement of the lines of tooth bar (9) is become the garden revolution of pointer simultaneously through gear.In weighing process, the weighting error that under the elastic force effect, measured object is moved up and down to produce owing to spring (19), so a damper (18) is housed at sleeve pipe (11) internal upper part, as shown in Figure 4, the piston rod (12) of damper (18), spring pressuring plate (13) and connecting rod (17) are one, the lower surface of the upper end of spring (19) and spring pressuring plate (13) joins, the lower end is placed on the zero setting hollow bolt (20), a groove is arranged on the sleeve pipe (11), the spring pressuring plate (13) and the brace of tooth bar (9) are slided up and down in groove.Sleeve pipe (11) is fixed in the housing (1), and as shown in Figure 2, tooth rest (14) is fixed on the centre of housing (1).

Claims

1, a kind of pair of pointer letter disk portable balance, it is characterized in that: show that letter disk (2) is marked with kilogram and two kinds of scales of gram, tooth rest (14) and sleeve pipe (11) are contained in the housing (1), a damper (18) is equipped with on the top of sleeve pipe (11) inner spring compressing tablet (13), a no initial tension spring (19) is equipped with in the bottom, fix two groups of pitch wheels on the tooth rest (14), the downward displacement of the lines of tooth bar (9) that is fixed on the spring pressuring plate (13) is transformed into garden Zhou Yundong, thereby drives kilogram and the rotation of gram pointer.

2, according to the two pointer letter disk portable balances described in the claim 1, it is characterized in that: in two groups of pitch wheels, driving wheel (8) and locating wheel (10) are meshed with the both sides of tooth bar, the number of teeth of driving wheel (8) and gram pin gear (5), modulus equate that the number of teeth, the modulus of power wheel (7) and kilogram pin gear (6) equate.

3, according to the two pointer letter disk portable balances described in the claim 1, it is characterized in that: driving wheel (8) is coaxial with power wheel (7), and gram wheel shaft (16) is enclosed within on kilogram wheel shaft (15).

4, according to the two pointer letter disk portable balances described in the claim 1, it is characterized in that: the piston on the damper (18), spring pressuring plate (13) and connecting rod (17) are one.