CN2743804Y

CN2743804Y - Force measuring sensor in tube

Info

Publication number: CN2743804Y
Application number: CN 200420108748
Authority: CN
Inventors: 王金泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-11
Filing date: 2004-11-11
Publication date: 2005-11-30
Anticipated expiration: 2014-11-11

Abstract

The utility model discloses a force measuring sensor in tube, which is used for measuring the weight of objects and comprises a strain gage and a cylinder. The outside of the cylinder is provided with a convex annular table, and a baffle wall is arranged in the cylinder relative to the annular table. Four strain gages are distributed in the equal distance between the side surface of the baffle wall and the axial line, and the four strain gages compose whole-bridge circuit. The utility model has the advantages that the structure is simple, the fabrication cost is low, and the installation and the use are convenient; the special-purpose bridge frame or the table are not needed, and a circular hole is only needed to be opened on the heavy supporting element.

Description

The tube-containing type force cell

Technical field

The utility model relates to a kind of electronic sensor that is used for Measuring Object weight.

Background technology

At present, be used for that the electronic sensor of weight of material has general purpose transducer in ergometry and the feed bin, its principle of work all be perpendicular to foil gauge above exert pressure or pulling force, promptly being subjected to force direction is single direction.This because the power effect produces elastic deformation and resistance variations, better with the linear degree of power effect size.But when installing, special use weigh crane span structure or weighing platform must be arranged, along held up by force cell by force direction, mechanical processing difficulty is big, installs and use all more complicated with weight.

Summary of the invention

The purpose of this utility model is that a kind of tube-containing type force cell will be provided, and this sensor construction is simple, need not to weigh crane span structure or weighing platform, and machining is easy, and is easy to install and use.

The purpose of this utility model is achieved in that this sensor comprises foil gauge and cylinder, there is the annular table of projection the cylinder outside, with the corresponding cylinder of annular table in be connected with partition wall, at partition wall side and equidistant uniform four foil gauges of axis, four foil gauges are formed full-bridge circuits.

The utility model has the advantages that simple in structurely, cheap, easy to install, do not need bridge frame dedicated or platform, only need on the weight support member, to make a call to a circular hole and get final product.

Description of drawings

Fig. 1 is the structural drawing of an embodiment of the present utility model.

Fig. 2 is the A-A cut-open view of Fig. 1.

Fig. 3 is a circuit diagram of the present utility model.

1. cylinders among the figure, 2. annular table, 3. quad, 4. partition wall, 5. through wires hole, R. foil gauge.

Embodiment

In Fig. 1 and Fig. 2, there is the annular table 2 of projection cylinder 1 outside, and in use, annular table 2 is combined closely with the stressed circular hole of weight support member, is the stress deformation part, and the strain of energy measurement four direction can be made long-distance transmissions.With annular table 2 corresponding cylinders 1 in be connected with partition wall 4, at partition wall 4 sides and equidistant uniform four the foil gauge R of axis.After four foil gauge R formed full-bridge circuit, lead-in wire was drawn outside the cylinder 1 by four through wires holes 5, formed quad 3.The two ends of cylinder 1 are sealed with end cap.

In Fig. 3, four foil gauge R, promptly foil gauge R1～R4 forms full-bridge circuit, and draws by four lug plate e1～e4.

During use, sensor is pressed in the weight support member as a single piece, can eliminate the adverse effect that the bolt sensor brings.Simultaneously sensor is installed in a plurality of weight support members, can reduces the influence that the heavy imbalance of thing is brought to greatest extent.When all weight support members are all loaded onto sensor, can improve measuring accuracy.

Claims

1. tube-containing type force cell, this sensor comprises foil gauge and cylinder, it is characterized in that there is the annular table of projection cylinder outside, with the corresponding cylinder of annular table in be connected with partition wall, at partition wall side and equidistant uniform four foil gauges of axis, four foil gauges are formed full-bridge circuit.