CN87201184U

CN87201184U - Multirange spring balance

Info

Publication number: CN87201184U
Application number: CN 87201184
Authority: CN
Inventors: 黄曾新
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-03-31
Filing date: 1987-03-31
Publication date: 1987-12-02

Abstract

The utility model discloses a multi-range spring scale having convenient carrying and exact weighing, which is composed of three springs and three graduated tubes which are closely matched; therefore, the range is big when weighing, and the sensitivity is high; The utility model has the advantages of high reliability, long service life, reasonable design; the resolution and the stability of the multi-range spring scale has more appreciable improvement than the improvement on the resolution and the stability of the common daily service spring balance, and the multi-range spring scale is compact so that the use and the carrying are convenient; as long as the carrying ring is carried when the object is weighed, the weight of the object hung on the hook can be directly read by the calibration tube.

Description

Multirange spring balance

The utility model relates to a kind of improvement of spring balance.

Spring balance seen in the current daily life is mostly by ring, spring, and sleeve pipe, rule and suspension hook are formed.

Commercially available family expenses spring balance, pocket dynamometer, all only with a spring, range is less, sensitivity is low, reading error is big when the scale lighter items, when the article of weighing, because of tensile elongation excessive, make extension spring produce fatigue deformation, after causing during weighing value inaccurate, thereby this this spring balance can not can only be sold with ergographic name as weighing balance.

Another kind of be used for the scale bag in the railway system, the spring balance that volume is bigger, its cost height only is suitable for the heavier article of scale; Because of from great, also should not in family daily life, use as weighing balance so carry inconvenience.

The purpose of this utility model provides a kind of improved spring balance one multirange spring balance, and it has higher sensitivity and resolution, and is easy to carry.The Item Weight that hangs over during weighing on the suspension hook can be read on the graduated tube of correspondence very soon, both has been suitable for the lighter Item Weight of scale, also can scale goes out the weight than heavy articles, and value is reliable and stable.

Task of the present invention is finished in the following ways: spring balance is to produce by the principle that length growth rate and weighing article body weight at the elastic limit inner spring are directly proportional, for making weighing correct, sensitive, prevent the spring fatigue distortion, the elongation compressibility of multirange spring balance spring is controlled in 60%, spring adopts manganese steel filament winding system, and through high-temperature heat treatment, average tempering and artificial aging are handled.

For range is widened, be provided with three springs in the spring balance, three graduated tubes, three groups of positioning attachments are the center with the extension spring, put the down scale pipe successively, middle graduated tube, middle stage clip, high range pipe, big stage clip and outer bassoon, three springs are in pipe or be stretched in the annular space, compress, and the effect of position-limiting tube is to make the extension spring length growth rate be no more than range of control, the effect of stop collar and spacing ring is the centering stage clip, and two ends of big stage clip are limited.When weighing, be located on the suspension hook of scale lower end by being claimed article to be suspended to, on portable bail that is located at the scale upper end,, compress because the interior spring of the effect scale of Item Weight is all stretched.When article were light, because middle stage clip, big stage clip compressibility was little, so middle graduated tube and high range Guan Jun fail to expose scale value.At this moment extension spring elongation is more, and the down scale pipe demonstrates the gravimetric value of article Xiang Shang Yi Dong And.When weighing article weight is the maximal value of first range above the down scale range, middle stage clip is because of being subjected to further compression, middle graduated tube upwards is displaced to meter full scale, demonstrate the weighing value, when being claimed that article are heavier and surpassed second range, big stage clip decrement increases, and the high range pipe has exposed scale value, and at this moment being presented at three-range gravimetric value promptly is this weight than heavy articles.

The multirange spring balance is owing to be provided with three springs that quality is higher in sum, and every spring works on three ranges respectively, and its deformation is strict controlled in the suitable scope, so the shown numerical stability of each range is reliable during weighing.

The multirange spring balance is compared with existing spring balance has following advantage:

Have a plurality of ranges, so range of weighing is big, the performance of weighing, resolution has obvious improvement than existing spring balance.

Compact conformation, sensitivity is good, and value is stable, and serviceable life is longer.

Be suitable for going out to carry, weighing is convenient, and the Item Weight that hangs on the suspension hook can directly be read from graduated tube.

The utility model further specifies by the following drawings and embodiment.

Accompanying drawing 1 is the fragmentary sectional elevation view of multirange spring balance.

The drawing numbering:

1-bail 2-extension spring

The outer position-limiting tube of 3-down scale pipe 4-

Graduated tube among the position-limiting tube 6-in the 5-

Stage clip among the 7-external position limited sleeve 8-

9-internal position limited sleeve 10-high range pipe

The outer big stage clip of spacing ring 12-of 11-

The outer bassoon of spacing ring 14-in the 13-

15-tension spring pin 16-suspension hook pin

The 17-suspension hook

Embodiment:

Accompanying drawing 1 is a spring balance with three ranges, bail (1) is contained in the top of scale, passing down scale pipe (3) upper end fastens extension spring (2), extension spring (2) places in the down scale pipe (3), the lower end is connected with the tension spring pin (15) that is located at middle graduated tube (6) bottom, outer stage clip (8) in the middle graduated tube (6), the high range pipe (10) of being with successively of down scale pipe (3), big stage clip (12), outer bassoon (14).Down scale pipe (3) is produced with φ 6 * 0.5 stainless-steel tubes, and pipe is outer to engrave scale value, and middle graduated tube (6) is produced with external diameter φ 10 steel pipes, pipe is outer to be carved with scale value, and high range pipe (10) is produced with φ 16 copper pipes, the outer scale value that also is carved with of pipe, outer bassoon (14) makes with φ 32 polyvinyl chloride pipes, 200 millimeters of length, extension spring (2), the big stage clip (12) of middle stage clip (8) adopts No. 65 manganese steel coilings, through quench hot, average tempering, and Ageing Treatment, 140 millimeters of extension spring (2) external diameter φ 4 length.

Down scale pipe (3) lower end outer wall is provided with outer position-limiting tube (4), and the upper end inwall of middle graduated tube (6) is established interior position-limiting tube (5), and position-limiting tube (4) contacts with interior position-limiting tube outside extension spring (2) is when extensibility reaches 60%, and extension spring (2) is no longer elongated.

Middle graduated tube (6) bottom outer wall is established an external position limited sleeve (7) high range pipe (9) upper inside wall an internal position limited sleeve (9), middle stage clip is contained among these two stop collars, its upper end contacts with internal position limited sleeve (9), the lower end contacts with external position limited sleeve (7), high range pipe (10) bottom outer wall is provided with outer spacing ring (11), outer bassoon (14) top has the big stage clip (12) of an interior spacing ring (13) upper end to contact with interior spacing ring (13), the lower end contacts with outer spacing ring (11), and outer bassoon bottom is provided with suspension hook pin (16) suspension hook (17) upper end and links to each other with the suspension hook pin.

The range of weighing of little range: 10 grams are to 500 grams.

The range of weighing of middle range: 500 grams are to 4 kilograms.

The range of weighing of wide range: 4 kilograms to 20 kilograms.

Article hang on the suspension hook (17) when weighing, portable bail, when thing heavy less than 500 the gram, the down scale pipe demonstrates gravimetric value to top offset, when thing heavy during less than 4 kilograms, middle graduated tube upwards is displaced to scale area, demonstrates gravimetric value, when claiming less than 20 kilograms of article, the high range pipe reaches scale area to top offset, and And demonstrates gravimetric value.Gravimetric value on each graduated tube is used when making through repeatedly being demarcated after the check.

Claims

1, a kind of multirange spring balance, comprise bail [1], extension spring [2], down scale pipe [3] and suspension hook [17], it is characterized in that down scale pipe [3] lower end outer wall is provided with outer position-limiting tube [4], be enclosed within the outer middle graduated tube [6] in addition of down scale pipe [3], its upper end inwall is provided with interior position-limiting tube [5], a middle stage clip [8], be enclosed within outside the graduated tube [6], middle stage clip [a 8] high range pipe of overcoat [10], big stage clip [12] is enclosed within outside the high range pipe [10], big stage clip [12] peripheral hardware one outer tube [14], middle graduated tube [6] bottom outer wall is established an external position limited sleeve [7], high range pipe [10] upper inside wall has an internal position limited sleeve [9], high range pipe [10] bottom outer wall is established an outer spacing ring [11], an interior spacing ring [13] is arranged at outer bassoon [14] top, middle stage clip [8] upper end contacts with internal position limited sleeve [9], the lower end contacts with external position limited sleeve [7], and big stage clip [12] upper end contacts with interior spacing ring [13], and the lower end contacts with outer spacing ring [11], outer bassoon bottom is provided with suspension hook pin [16], suspension hook [17] upper end links to each other with the suspension hook pin, and extension spring [2] upper end is connected with bail [1], and the lower end links to each other with the tension spring pin [15] that is located at middle graduated tube [6] bottom.