CN2322133Y - Weighing sensor - Google Patents

Abstract

The utility model relates to a weighing sensor, which is an improvement of a weighing sensor and belongs to metering appliances. Existing weighing sensors are divided into a mechanical class and an electronic class and have the shortages of complex structure, low accuracy, etc. in different degrees. A weighing poise guide rail in an Archimedes line shape is arranged on a weighing round plate of the utility model. Heavy objects and a weighing poise are respectively hung on the weighing round plate and the weighing poise guide rail to realize the purpose of converting the change of weight into the change of the rotary angle of the weighing round plate linearly. The utility model has the advantages of simple structure and easy manufacture.

Description

LOAD CELLS

The utility model relates to the improvement of LOAD CELLS, belongs to measurement instrument.

Existing LOAD CELLS generally is divided into machinery and electronics two big classes, mechanical title, the quality that common transaction arranged the weigh balance of usefulness and referential spring balance etc.; The mode of electrical type is a lot, has pressure type, frequency type etc. multiple.Also there is mechanical LOAD CELLS to show the weighing apparatus that combines with electronics.These load cell structure complexity, cost is higher and precision is not high.

The purpose of this utility model provides and a kind ofly simple in structure can change weight into angle by linearity and change, and can keep a kind of like this LOAD CELLS of degree of precision again.This LOAD CELLS is applicable to application in particular cases or is convenient to and docks with electronic display unit, also can be made into independent displaying observation, and the convenient tolerance that is suitable for claims.

The purpose of this utility model is achieved through the following technical solutions.

This LOAD CELLS is configured to by propping up, be characterized on the turning axle on the support, being fixed with the plectane of weighing, on the plectane plate circumferential end surfaces of weighing, have the backguy groove, along hanging the backguy of weighing on the backguy groove, the end of backguy of weighing is fixed on the backguy groove, and the other end is connected with the thing of weighing; Be provided with the linear stone roller guide rail of weighing of Archimedes on the plectane plate face of weighing, along hanging the stone roller backguy of weighing in the backguy groove on the stone roller guide rail of weighing, an end of the stone roller backguy of weighing is fixed on the stone roller guide rail of weighing, and the other end is connected with the stone roller of weighing.

This LOAD CELLS is in order to solve the conversion and the demonstration of weight and angle, the utilization principle of moment balance, the thing of weighing varies in weight, but it is constant from the axis of rotation distance, the stone roller weight of weighing is constant, can make it from turning axle apart from difference by the stone roller guide rail of weighing, making the stone roller of weighing keep balance, realize measuring weight by deflection angle with the thing of weighing.

Figure one is the weighing principle synoptic diagram of a kind of embodiment of the utility model.

Figure two is structural representations of the another kind of embodiment of the utility model.Among the figure: 1. being pointer, 2. being the stone roller guide rail of weighing, 3. is turning axle, 4. is the plectane of weighing, and 5. is the stone roller backguy of weighing, and 6. is the thing backguy of weighing, and 7. is the stone roller of weighing, and 8. is by the hook of weighing (dish).

Below in conjunction with accompanying drawing the utility model is further described.

The weighing principle of a kind of embodiment of this LOAD CELLS is seen figure one, 4. the plectane of weighing is a plane plectane that can 3. rotate with turning axle, be hung with on the plectane cylindrical of plane and weigh backguy 6., the backguy of weighing is sagging along the cylindrical tangential direction, connects weighing pan 8. in the backguy of weighing; Be provided with archimedes spiral shape guide rail 2. in the lower half circle of plane plectane, a backguy end 5. of the stone roller of weighing is fixed on the B end of the stone roller guide rail of weighing, and 7. the other end of the stone roller backguy of weighing connects weighs stone roller.

When weighing, the thing f that weighs is placed on the weighing pan, the heavy F of stone roller if weigh, the plectane of weighing rotates around axis of rotation O, at this moment weigh stone roller guide rail and weigh stone roller backguy point of contact A and distance of shaft centers from changing along with the variation of angle φ (present embodiment is in 0 to π scope), the radius of establishing the plectane of weighing is r, weighs under the thing f effect of weighing and cuts or polish jade with an emery wheel guide rail rotational angle φ back balance, according to archimedes spiral equation R=a+b φ, then know that by principle of moment balance F (a+b φ)=fr promptly $f=\frac{F(a+\mathrm{b\φ})}{r}$ $\mathrm{\φ}=\frac{\mathrm{fr}-\mathrm{Fa}}{\mathrm{Fb}}$ As can be seen from the above equation, f is depended in the variation of φ, and φ and f variation in direct ratio.Can reach the purpose of measuring the thing weight of weighing by the variation of angle.

For example: establish the plectane radius r=100mm that weighs, a=20, b=80/ π, in 0 to π scope, when weighing stone roller F=100g, then the scope of weighing is 20g to 100g at φ; When weighing stone roller F=1000g, then the following formula scope of weighing is 200g to 1000g.

Figure two is structural representations of another kind of embodiment.The stone roller guide rail of weighing in this embodiment is located in the upper semi-circle of the plectane of weighing, and the thing of weighing hangs over the hook of weighing and 8. goes up, and its weighing principle is identical with figure one.On turning axle fixed pointers 1., the angle of needle deflection is identical with the angle φ of the plectane rotation of weighing, and linearly proportional with weight.

The utility model is simple in structure, and processing and manufacturing is easy.

The maximum characteristics of this LOAD CELLS can directly change weight change into angle exactly and change, as long as turning axle is connected with the device of pointer or other angles of display, the just directly variation of angles of display, being fit to very much those needs is the change transitions of weight in the occasion of angle variation.For example can use f in the sensor of measuring water level, the backguy of weighing is connected with the detection utmost point that reflects SEA LEVEL VARIATION, and excellent precision is arranged, and does not need gearing such as neutral gear, just can make gauge glass.Secondly because angular range is big, can make 360 degree, need not middlely amplify gear, precision is also fine, so long as can directly indicate weight in the measurement range.But also also can make the sensor of surveying various power with it, convert power to angle by this kind mode and change, as: the mensuration of torsion, buoyancy etc., make novel transaction weighing apparatus class after also can reequiping, or the like, range of application is very extensive.

This LOAD CELLS is mainly considered two aspects in the specific implementation.First precision, second scope of weighing.The main cause that influences precision has the friction force of the diameter of the plectane of weighing and weight, axle, and the archimedes spiral shape guide rail generally influence to linearity is bigger, and scale can comply with actual scribing, but in a single day scale decide, and the precision of cutting or polish jade with an emery wheel of weighing also can influence precision.In the specific implementation, should adopt thin nonmetal and metal village material, the plectane of weighing is made disc type, cylindrical should have the backguy groove, and the backguy of weighing is moved along groove.The shape of archimedes spiral shape guide rail is big to linear effect, can be fixed on the plectane of weighing after processing and proofread and correct, makes it to obtain better linearity, and axle can make bearing into, increases precision and sensitivity.

Claims (1)

1, a kind of LOAD CELLS is configured to by propping up, it is characterized in that on the turning axle on the support, being fixed with the plectane of weighing, on the circumferential end surfaces of plectane of weighing, have the backguy groove, along hanging the backguy of weighing on the backguy groove, the end of backguy of weighing is fixed on the backguy groove, and the other end is connected with the thing of weighing; Be provided with the linear stone roller guide rail of weighing of Archimedes on the plectane plate face of weighing, along hanging the stone roller backguy of weighing in the backguy groove on the stone roller guide rail of weighing, an end of the stone roller backguy of weighing is fixed on the stone roller guide rail of weighing, and the other end is connected with the stone roller of weighing.

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