CN208968631U - Combined type high-precision spring scale - Google Patents

Abstract

The utility model provides a kind of combined type high-precision spring scale, belong to device for measuring force field, including shell and parallel with one another in shell and as at least two springs or groups of springs made of being sequentially connected in series is set, groups of springs one end is connect with shell, the connection of the top of the other end and scale, the bottom end of scale is extended shell and is connect with the 5th suspender member being arranged in outside shell；Groups of springs includes inner spring and the outer spring that is set in outside inner spring；It further include the fixed pulley of setting in the upper housing, groups of springs includes the first spring being parallel to each other and second spring, first spring one end is connect with housing bottom, and the other end is connect around fixed pulley with second spring top by connecting rope, and second spring bottom end is connect with scale.Combined type high-precision spring scale provided by the utility model, to solve the not high technical problem of Conventional springs scale measurement accuracy existing in the prior art.

Description

Combined type high-precision spring scale

Technical field

The utility model belongs to device for measuring force technical field, is to be related to a kind of combined type high-precision spring more specifically Scale.

Background technique

The measurement of power is the engineering problem being of universal significance, according to measurement convenience and specific application conditions people Propose different force measuring methods, such as utilize gravity measurement force value, using distortional elastomer measurement force value (spring scale, torsion balance with And spring ring type dynamometer), utilize sensor measurement force value etc..Wherein spring scale is the common tool for measuring gravity or power, bullet Generated after spring stress it is corresponding with external force deforms, and the deflection in elastic limit is directly proportional to the size of institute stress.Weighing When, elastic force and the weight (gravity) of measured object caused by camber of spring balance each other, therefore can measure from the size of deflection The weight of measured object, and then determine its quality, or even other physical quantitys etc. can be can measure indirectly by the measurement of power or gravity.It is right For Conventional springs scale, most of to be designed by single spring, precision is not high, especially bends the very big wide range bullet of strong coefficient Spring scale.

Utility model content

It is existing in the prior art to solve the purpose of this utility model is to provide a kind of combined type high-precision spring scale The not high technical problem of Conventional springs scale measurement accuracy.

In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of combined type high-precision spring scale, Include: shell and is arranged in the shell and or be sequentially connected in series made of groups of springs parallel with one another as at least two springs, institute It states groups of springs one end to connect with the shell, the top connection of the other end and scale, the shell is extended in the bottom end of the scale Body is connect with the 5th suspender member being arranged in outside the shell.

Further, the groups of springs includes inner spring and the outer spring that is set in outside the inner spring, the inner spring It is connected with the outer spring top by the first fixed plate, bottom end is connected by the second fixed plate, first fixed plate and institute Shell connection is stated, second fixed plate is connect with the scale.

Further, the scale side, which is provided with, bends the first scale that strong coefficient matches with the inner spring, another Side setting bends the second scale that strong coefficient matches with the outer spring.

Further, first fixed plate is connected by the first zeroing bolt and the shell for extending the shell It connects.

Further, the first suspender member is provided at the top of the first zeroing bolt.

It further, further include the fixed pulley in setting portion on the housing, the groups of springs includes the to be parallel to each other One spring and second spring, first spring one end are connect with the housing bottom, and the other end is by connecting rope around described Fixed pulley is connect with the second spring top, and the second spring bottom end is connect with the scale.

Further, the partition parallel with first spring or the second spring is provided in the shell, it is described Partition bottom end is connect with the housing bottom, there is gap between top and the housing tip, and the fixed pulley is arranged described In gap, the housing cavity is divided into first chamber and second chamber by the partition, and the first spring setting is described the In one chamber, the second spring is arranged in the second chamber.

Further, first spring is connect by extending the second zeroing bolt of the shell with the shell.

Further, first spring top is provided with third suspender member, and the second spring top is provided with and institute State the second suspender member of connecting rope connection.

Further, the 4th suspender member is provided on the shell.

The beneficial effect of combined type high-precision spring scale provided by the utility model is: compared with prior art, this reality The single telescopic spring amount of spring scale is changed with novel combination type high-precision spring scale to measure the natural mode of pulling force size, is created New property by the single spring replacement in Conventional springs scale in order to parallel with one another or made of being sequentially connected in series as at least two springs Groups of springs.Be computed, when bend the different several springs of strong coefficient it is used in parallel when, total strong coefficient in the wrong is bending for each spring The sum of strong coefficient, i.e., when groups of springs using at least two springs after in parallel, the strong coefficient ratio of always bending of groups of springs forms the spring The strong coefficient in the wrong of any spring of group is all big, so that the elastic limit of groups of springs is closer to its tensile strength, and then effectively Improve the measuring range of spring scale；It bends strong coefficient simultaneously to increase, the stability after groups of springs stretches enhances, and reduces and stretched The risk that spring shakes in journey, and then effectively increase the measurement accuracy of spring scale.When groups of springs is at least two springs It when concatenated, bend strong coefficient and is less than any spring for forming the groups of springs, so that stretching of generating of groups of springs under same pulling force Long amount greatly increases to improve the precision of spring scale compared to single spring.

It can be seen that groups of springs made of the parallel connection of either at least two springs or at least two springs are sequentially connected in series system At groups of springs its precision increase relative to Conventional springs scale, the spring scale structure letter that in addition the utility model is proposed Single, reading is intuitive, is easily installed or repairs, and remains Conventional springs scale and carry advantage easy to use, convenient for promoting the use of.

Detailed description of the invention

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is the configuration schematic diagram for the combined type high-precision spring scale that the utility model embodiment one provides；

Fig. 2 is the configuration schematic diagram for the combined type high-precision spring scale that the utility model embodiment two provides.

Wherein, each appended drawing reference in figure:

1- shell；2- groups of springs；21- inner spring；22- outer spring；The first fixed plate of 23-；The second fixed plate of 24-；25- One scale；The second scale of 26-；The first spring of 27-；28- second spring；29- connecting rope；3- scale；The 5th suspender member of 4-；5- One zeroing bolt；The first suspender member of 6-；7- fixed pulley；8- partition；The gap 9-；10- first chamber；11- second chamber；12- Two zeroing bolts；13- third suspender member；The second suspender member of 14-；The 4th suspender member of 15-.

Specific embodiment

In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein It applies example to be only used to explain the utility model, is not used to limit the utility model.

Fig. 1 and Fig. 2 is please referred to, now combined type high-precision spring scale provided by the embodiment of the utility model is illustrated. The combined type high-precision spring scale, including shell 1 and be arranged in shell 1 and parallel with one another or successively by least two springs The groups of springs 2 being connected in series, 2 one end of groups of springs are connect with shell 1, and the other end is connect with the top of scale 3, the bottom end of scale 3 Extend shell 1 to connect with the 5th suspender member 4 being arranged in outside shell 1.

Combined type high-precision spring scale provided by the utility model changes the single bullet of spring scale compared with prior art Spring stroke measures the natural mode of pulling force size, and the innovative single spring by Conventional springs scale replaces in order to by extremely Few two springs are parallel with one another or groups of springs made of being sequentially connected in series.It is computed, when bending, the different several springs of strong coefficient are in parallel In use, its total strong coefficient in the wrong is the sum of the strong coefficient in the wrong of each spring, i.e., using the spring after the parallel connection of at least two springs When group 2, the strong coefficient in the wrong for always bending any spring that strong coefficient ratio forms the groups of springs of groups of springs 2 is all big, so that groups of springs 2 Elastic limit effectively increases the measuring range of spring scale closer to its tensile strength；It bends strong coefficient simultaneously to increase, spring Stability after group 2 stretches enhances, and reduces the risk that spring in drawing process shakes, and then effectively increase spring scale Measurement accuracy.When groups of springs 2 is that at least two springs are concatenated, bends strong coefficient and be less than any bullet for forming the groups of springs Spring, so that the elongation that groups of springs 2 generates under same pulling force greatly increases to improve spring scale compared to single spring Precision.Wherein, the 5th suspender member 4 can be hook, hanging ring, shackle, pallet etc., as long as thing of weighing can be fixed.

It can be seen that groups of springs 2 made of the parallel connection of either at least two springs or at least two springs are sequentially connected in series Manufactured its precision of groups of springs 2 increases relative to Conventional springs scale, the spring scale knot that in addition the utility model is proposed Structure is simple, and reading is intuitive, is easily installed or repairs, and remains Conventional springs scale and carry advantage easy to use, convenient for promoting It uses.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 1, bullet Spring group 2 includes inner spring 21 and the outer spring 22 being set in outside inner spring 21, and inner spring 21 and 22 top of outer spring pass through first Fixed plate 23 connects, and bottom end is connected by the second fixed plate 24, and the first fixed plate 23 connect with shell 1, the second fixed plate 24 and Scale 3 connects.

Groups of springs 2 is mutual using two springs (inner spring 21 and outer spring 22) of diameter different (it is different to bend strong coefficient) Parallel connection, and two springs are installed by the way of being arranged, effectively reduce space size shared by groups of springs 2, Jin Eryou Effect reduces the size of spring scale, carries convenient for user.The setting of first fixed plate 23 and the second fixed plate 24 effectively increases The convenience that groups of springs 2 mounts and dismounts, while when ensuring spring scale applied elongation, the elongation of inner spring 21 and outer spring 22 Measure accurate setting that is consistent always, and then being convenient for scale.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 1, mark 3 side of ruler, which is provided with, bends the first scale 25 that strong coefficient matches with inner spring 21, and other side setting bends strong system with outer spring 22 The second scale 26 that number matches.

The utility model changes the natural mode that single scale is arranged on scale 3,3 two sides of scale be respectively provided with Inner spring 21 bends the first scale 25 that strong coefficient matches and bends the second scale 26 that strong coefficient matches with outer spring 22, uses When, the Calais Zhi Xiang of the first scale 25 and the second scale 26 is obtained into object weight, this setting effectively increase spring scale each The accuracy of the corresponding reading of scale, and then improve the measurement accuracy of spring scale.Bending strong coefficient such as outer spring 22 is inner spring 21 When bending 10 times of strong coefficient, when the first scale 25 reading is 8.42N, the corresponding reading of the second scale 26 is 0.842N, then object weight is 9.262N, accuracy of reading have been increased to 0.002N by 0.02N.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, inner spring 21 and outer 22 initial length of spring is identical.The two initial length is identical solid by the first fixed plate 23 or second convenient for the two top or bottom end Fixed board 24 is connected with each other, and improves the convenience of spring scale assembling.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, groups of springs 2 can be by Diameter is different, bends strong coefficient in the order of magnitude for change (such as 100,10,1 or 10,1,0.1 three grades, so that scale dial scale is total With) three springs it is parallel with one another form, be designed to three precision collet scales.When reading, the sum of corresponding reading of three springs is taken.In this way Parallel way combination not only improved precision but also increased range.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 1, One fixed plate 23 is connect by extending the first zeroing bolt 5 of shell 1 with shell 1.

It checks whether the zero graduation of 3 bottom of scale just exposes 1 bottom opening of shell when test, otherwise rotatable first adjusts Zero bolt 5 adjustment 2 top of groups of springs is modified the position of zero groove apart from the distance that shell 1 exports.This setting tune Z-operation is easy to learn, meets the requirement of spring scale.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 1, The first suspender member 6 is provided at the top of one zeroing bolt 5.

In use, catching on the first suspender member 6 with hand, or the first suspender member 6 is sheathed on bracket, realizes the outstanding of spring scale It hangs, will be hung to weighing object later to being weighed on the 5th suspender member 4.The setting of first suspender member 6 convenient for user according to It needs to hang up on spring scale, while the setting of the first suspender member 6 is also convenient for user and rotates the first zeroing bolt as needed 5, this setting effectively increases the convenience that equipment uses.First suspender member 6 can be hook, hanging ring, shackle etc., as long as energy Enough realize above-mentioned function.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, 27 He of the first spring It is consistent that second spring 28 bends strong coefficient.Identical material equally bends the spring series connection of strong coefficient, and relative to single spring, precision can be mentioned It doubles.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 2, also Fixed pulley 7 including 1 top of shell is arranged in, groups of springs 2 include the first spring 27 for being parallel to each other and second spring 28, and first 27 one end of spring is connect with 1 bottom of shell, and the other end is connect around fixed pulley 7 with 28 top of second spring by connecting rope 29, 28 bottom end of second spring is connect with scale 3.

The setting of fixed pulley 7 realizes 180 ° of overturnings in 29 direction of connecting rope, so that the first spring 27 and second spring 28 It can be arranged in parallel in shell 1, this setting effectively reduces the length of spring scale, ensure that the convenience that spring scale carries.

Using half cycle enclosed construction, rope will not fall off 7 race of fixed pulley in the present embodiment, play limitation two sides Spring is located at the effect of place cavity.

Thinner nylon rope used in the adoptable similar fishing rod of connecting rope 29 in the present embodiment, energy self-lubricating, reduction rub It wipes, to reduce measurement error.

Using Shi Keyong left hand to withstand 1 lower left quarter of shell in the present embodiment makes the first spring 27 vertical, in order to avoid spring scale Inclination.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 2, shell The partition 8 parallel with the first spring 27 or second spring 28 is provided in body 1,8 bottom end of partition is connect with 1 bottom end of shell, top There is gap 9 between 1 top of shell, fixed pulley 7 is arranged in gap 9, and 1 inner cavity of shell is divided into 10 He of first chamber by partition 8 Second chamber 11, the first spring 27 are arranged in first chamber 10, and second spring 28 is arranged in second chamber 11.

The setting of partition 8 avoids the first spring 27 or second spring 28 in spring scale movement or use process and occurs mutually Interference, and then ensure that the stability of spring scale service performance.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 2, One spring 27 is connect by extending the second zeroing bolt 12 of shell 1 with shell 1.

The setting of second zeroing bolt 12 is so that user can be according to the phase of 3 bottom of scale zero groove and 1 outlet at bottom of shell To positional relationship, the adjusting that the first spring 27 realizes zero scribe line position at a distance from 1 bottom end of shell is adjusted, this structure is simple, It is convenient to return to zero, and meets it and uses needs.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 2, It is provided with third suspender member 13 at the top of one spring 27, the second suspender member connecting with connecting rope 29 is provided at the top of second spring 28 14。

The setting of third suspender member 13 and the second suspender member 14 effectively increases the convenience of the installation or removal of connecting rope 29. Second suspender member 14 and third suspender member 13 can be hook, hanging ring or shackle etc., as long as fixed connection string 29 can be used for.

As a kind of specific embodiment of combined type high-precision spring scale provided by the utility model, referring to Fig. 2, shell The 4th suspender member 15 is provided on body 1.

Spring scale can be hung by the 4th suspender member 15 and be fixed when use, it is fixed just that this setting improves spring scale Victory meets its requirement.4th suspender member 15 can be hook, hanging ring or shackle etc., as long as the perpendicular of spring scale can be used for Straight suspension.

The weighing of spring scale can be from 1 milligram to tens of tons in the present embodiment.Wherein, load is below in 2mg, inner spring 21, quartz fibre spring can be used in outer spring 22, the first spring 27 and second spring 28；Load is below in 5g, and flat volume can be used Spring；Load capacity is bigger, and helical spring and disc spring can be used.It is special that spring load and mass ratio require, such as arm strength Device, heavily loaded weighing apparatus can use Specialty Chromium Alloy spring steel etc..

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. combined type high-precision spring scale, it is characterised in that: including shell (1) and setting in the shell (1) and by least Two springs are parallel with one another or groups of springs (2) made of being sequentially connected in series, described groups of springs (2) one end are connect with the shell (1), The other end is connect with the top of scale (3), and the bottom end of the scale (3) is extended the shell (1) and is arranged in the shell (1) the 5th suspender member (4) connection outside.

2. combined type high-precision spring scale as described in claim 1, it is characterised in that: the groups of springs (2) includes inner spring (21) and it is set in the outer spring (22) of the inner spring (21) outside, the inner spring (21) and the outer spring (22) top are logical The first fixed plate (23) connection is crossed, bottom end is connected by the second fixed plate (24), first fixed plate (23) and the shell (1) it connects, second fixed plate (24) connect with the scale (3).

3. combined type high-precision spring scale as claimed in claim 2, it is characterised in that: scale (3) side be provided with The inner spring (21) bends the first scale (25) that strong coefficient matches, and other side setting bends strong coefficient with the outer spring (22) The second scale (26) to match.

4. combined type high-precision spring scale as claimed in claim 2, it is characterised in that: first fixed plate (23) is by prolonging The first zeroing bolt (5) for stretching out the shell (1) is connect with the shell (1).

5. combined type high-precision spring scale as claimed in claim 4, it is characterised in that: at the top of first zeroing bolt (5) It is provided with the first suspender member (6).

6. combined type high-precision spring scale as described in claim 1, it is characterised in that: further include being arranged in the shell (1) The fixed pulley (7) on top, the groups of springs (2) include the first spring (27) being parallel to each other and second spring (28), and described One spring (27) one end is connect with the shell (1) bottom, and the other end bypasses the fixed pulley (7) and institute by connecting rope (29) The connection of second spring (28) top is stated, second spring (28) bottom end is connect with the scale (3).

7. combined type high-precision spring scale as claimed in claim 6, it is characterised in that: be provided in the shell (1) and institute State the first spring (27) or the parallel partition (8) of the second spring (28), partition (8) bottom end and the shell (1) bottom End connection, has gap (9) between top and the shell (1) top, and fixed pulley (7) setting is in the gap (9), institute It states partition (8) and the shell (1) inner cavity is divided into first chamber (10) and second chamber (11), the first spring (27) setting In the first chamber (10), second spring (28) setting is in the second chamber (11).

8. combined type high-precision spring scale as claimed in claim 6, it is characterised in that: first spring (27) passes through extension The second zeroing bolt (12) of the shell (1) is connect with the shell (1) out.

9. combined type high-precision spring scale as claimed in claim 6, it is characterised in that: setting at the top of first spring (27) Have third suspender member (13), is provided with the second suspender member connecting with the connecting rope (29) at the top of the second spring (28) (14)。

10. such as the described in any item combined type high-precision spring scales of claim 1-9, it is characterised in that: set on the shell (1) It is equipped with the 4th suspender member (15).