Digital double-range standard dynamometer
Technical field
The utility model relates to field of measuring techniques, is mainly used in the power value of certificate test machine, also can detect the power value of other power machines.
Background technology
Existing standard dynamometer only has a range, its effective range is generally the 10%-100% of nominal load, when examining and determine a testing machine with A, B, three grades of scales of C, because the useful range of the accurate dynamometer of a station symbol does not cover the load that testing machine A, a B, three grades of scales of C must be examined and determine, therefore, must use the accurate dynamometer of two station symbols could satisfy the calibrating requirement of a testing machine.Generally select C scale and the B scale of the accurate dynamometer certificate test of station symbol machine, with the A scale of the accurate dynamometer certificate test of another station symbol machine.Take the testing machine of 100kN as example, by international 125 series, A scale: 0-20kN, B scale: 0-50kN, C scale: 0-100kN is with standard dynamometer inspection C scale and the B scale of a 100kN, with the standard dynamometer inspection A scale of a 20kN, just can finish the calibrating of a testing machine in addition.
Summary of the invention
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of digital double-range standard dynamometer is provided, it has two ranges of size that are complementary with the testing machine scale, C scale and B scale with wide range certificate test machine, use again the A scale of small-range certificate test machine, realize can examining and determine a testing machine with the accurate dynamometer of a station symbol, thereby enlarged the range of the accurate dynamometer of a station symbol.
The technical scheme that solves its technical matters employing is: a kind of digital double-range standard dynamometer is by gland (1), digital dial gauge (2), flexible member (3), lever shaft (4), lever bracket (5), steel ball (6), axostylus axostyle screw (7), activity centre bar (8), dial framework (9), lever (10), fixed screw (11), base (12) forms, it is characterized in that: flexible member (3) is designed to flat annular, steel ball (6) is arranged below the gland (1), steel ball (6) is installed in the center on plane on flexible member (3) entablature, digital dial gauge (2) is installed on the dial framework (9), dial framework (9) is fixed on the center of flexible member (3) entablature lower plane by axostylus axostyle screw (7), lever (10) is installed on the lever bracket (5) by lever shaft (4), lever bracket (5) screw (11) that is fixed is fixed on the center on plane on flexible member (3) sill, and lock with base (12), the gauge outfit of digital dial gauge (2) contacts with the right long-armed upper surface of lever (10), activity centre bar (8) is not installed when adopting wide range, the strain of flexible member (3), by the right long-armed upper surface of lever (10), directly promote digital dial gauge (2) and show verification result, load onto activity centre bar (8) when adopting small-range, the upper surface of activity centre bar (8) contacts with the lower surface of axostylus axostyle screw (7), the lower end contacts with the left galianconism of lever (10) place, the strain of flexible member (3), depress the left galianconism of lever (10) by activity centre bar (8), the right long-armed upper surface of amplifying lever (10) at 5: 1 is made progress, promote digital dial gauge (2) and show verification result.
Beneficial effect is: because digital double-range standard dynamometer has two ranges that adapt with testing machine A, B, three grades of scales of C, can examine and determine a testing machine with the accurate dynamometer of a station symbol, save the accurate dynamometer of a station symbol.And saved and changed the accurate dynamometer of another station symbol required time of normal calibrating procedure, improved work efficiency.In addition, also provide a kind of useful range larger standard dynamometer to detecting other power machines.
Description of drawings
Fig. 1 is that the utility model structural representation front view, Fig. 2 are side views.
Among the figure: 1 gland, 2 digital dial gauges, 3 flexible members, 4 lever shafts, 5 lever brackets, 6 steel balls, 7 axostylus axostyle screws, 8 activity centre bars, 9 dial frameworks, 10 levers, 11 fixed screws, 12 bases.
Embodiment
Below in conjunction with accompanying drawing 1, accompanying drawing 2 and embodiment the utility model is further specified.
A kind of digital double-range standard dynamometer it by: gland (1), digital dial gauge (2), flexible member (3), lever shaft (4), lever bracket (5), steel ball (6), axostylus axostyle screw (7), activity centre bar (8), dial framework (9), lever (10), fixed screw (11) base (12) form.The flexible member of dynamometer (3) is designed to flat annular, under the nominal load effect, the strain displacement amount is not less than 3.5mm, measurement mechanism adopts direct measurement formula and lever amplification to measure two kinds of methods of formula and unites two into one, steel ball (6) is arranged below the gland (1), steel ball (6) is installed in the center on plane on flexible member (3) entablature, digital dial gauge (2) is installed on the dial framework (9), dial framework (9) is fixed on the center of flexible member (3) entablature lower plane by axostylus axostyle screw (7), lever (10) is installed on the lever bracket (5) by lever shaft (4), lever bracket (5) screw (11) that is fixed is fixed on the center on plane on flexible member (3) sill, and lock with base (12), the gauge outfit of digital dial gauge (2) contacts with the right long-armed upper surface of lever (10), activity centre bar (8) is not installed when adopting wide range, the strain of flexible member (3), by the right long-armed upper surface of lever (10), directly promote digital dial gauge (2) and show verification result, the upper surface of loading onto activity centre bar (8) when adopting small-range contacts with the lower surface of axostylus axostyle screw (7), the lower end contacts with the left galianconism of lever (10) place, the strain of flexible member (3), depress the left galianconism of lever (10) by activity centre bar (8), the right long-armed upper surface of amplifying lever (10) at 5: 1 is made progress, promote digital dial gauge (2) and show verification result.
When adopting wide range certificate test machine, load onto activity centre bar (8) during without activity centre bar (8), small-range, the method for conversion range is easy.
Digital dial gauge (2) is the commercially available prod, and it has output interface, can be connected with computing machine, carries out data and processes, and control directly shows the power value automatically.