CN107402100B - Force transducer - Google Patents
Force transducer Download PDFInfo
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- CN107402100B CN107402100B CN201710595808.2A CN201710595808A CN107402100B CN 107402100 B CN107402100 B CN 107402100B CN 201710595808 A CN201710595808 A CN 201710595808A CN 107402100 B CN107402100 B CN 107402100B
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- cantilever beam
- force
- lug plate
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- bearing frame
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- 238000005259 measurement Methods 0.000 claims abstract description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/13—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the tractive or propulsive power of vehicles
- G01L5/136—Force sensors associated with a vehicle traction coupling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
Abstract
A force transducer belongs to the technical field of force measuring equipment. One end of the device is provided with a connecting plate, four mounting holes are formed in the connecting plate, and the connecting plate is connected with a beam of the machine tool to be tested by using a U-shaped bolt; the other end is provided with a connecting lug plate for connecting a tractor pull rod, a bearing frame is arranged between the connecting plate and the connecting lug plate, the bearing frame is of a frame body structure with a hollow middle part, a gap is formed at one side of the bearing frame, which is close to the connecting lug plate, so that an upper part and a lower part are separated, an upper cantilever beam is formed at the upper part, and a lower cantilever beam is formed at the lower part; the gap between the upper cantilever beam and the lower cantilever beam is a groove type structure with a folded edge. The force measuring part of the force measuring sensor is of an L-shaped structure, and a groove-shaped gap with a folded edge is arranged between the upper cantilever beam and the lower cantilever beam of the force bearing frame to prevent the force bearing frame from being damaged. When the force is measured, the strain gauge is stuck at the relevant position according to the specific condition of the force to be measured. The integral structure meets the bearing capacity of the bearing frame, ensures the measurement accuracy within the allowable stress range and prevents the bearing frame from being damaged.
Description
Technical Field
The utility model belongs to the technical field of force measuring equipment, and particularly relates to a force measuring sensor.
Background
Currently, load cells are used to measure the load of a test object during actual use by research. For example, the tensile force in each direction is measured for agricultural equipment. To detect the pulling force needed by the agricultural machine and to provide proper pulling force. The existing force measuring device adopts an octagonal ring or a combined beam structure, adopts a plurality of angle sensors to measure angles, has a complicated structure and increases the cost.
The utility model patent number 201520698859.4 discloses a traction force sensing mechanism for controlling the suspension tilling depth of a tractor, which comprises an upper pull rod, a lower pull rod, a force measuring spring, a spring fixing box body, a spring seat, a sector, a pinion and an angular displacement sensor, wherein the force sensing mechanism is arranged on the upper pull rod to transmit the force on the upper pull rod to the sector and a gear amplifying mechanism, so that the displacement is converted into the angular quantity, and the force sensing control of the suspension mechanism is realized; by installing the angle sensor on the lifting arm, comprehensive adjustment of the tilling depth is realized. But the transmission structure is complex, the use and maintenance cost is high, and the resultant force in all directions can not be detected.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a force measuring sensor, wherein two force measuring sensors are used in a force measuring system, and the tension in all directions of an agricultural implement can be obtained by measuring only one angle in combination with one angle sensor.
The aim of the utility model is realized by the following technical scheme:
the utility model relates to a force transducer, wherein one end of the force transducer is provided with a connecting plate for connecting with a tool to be tested, the other end of the force transducer is provided with a connecting lug plate for connecting a pull rod of a tractor, a force bearing frame is arranged between the connecting plate and the connecting lug plate, the force bearing frame is of a frame body structure with a hollow middle part, a gap is arranged at one side of the force bearing frame, which is close to the connecting lug plate, so that an upper cantilever beam and a lower cantilever beam are separated, the upper part of the force bearing frame forms the upper cantilever beam, and the lower part of the force bearing frame forms the lower cantilever beam; the gap between the upper cantilever beam and the lower cantilever beam is a groove type structure with a folded edge.
In the force measuring mode, two groups of strain gauges R are symmetrically arranged on the upper surface and the lower surface of the connecting lug plate respectively during force measuring 1 、R 2 And R is 3 、R 4 The method comprises the steps of carrying out a first treatment on the surface of the The top surface and the bottom surface of the upper cantilever beam are symmetrically provided with two groups of strain gauges R respectively 5 、R 6 And R is 7 、R 8 And the data wires are respectively connected with a computer through a strain amplifying and data collecting device.
In another force measuring mode of the utility model, during force measuring, two groups of strain gauges R are symmetrically arranged on the side surface of the connecting lug plate corresponding to the upper cantilever beam and the upper cantilever Liang Nakuang close to the side surface 9 、R 10 And R is 11 、R 12 The top surface and the bottom surface of the upper cantilever beam are symmetrically provided with two groups of strain gauges R respectively 5 、R 6 And R is 7 、R 8 And the data wires are respectively connected with a computer through a strain amplifying and data collecting device.
Further, the clearance x between the upper cantilever beam and the lower cantilever beam along the vertical direction is the sum of the horizontal traction resistance and the force in the vertical direction and the deflection value of the point A at the tail end of the cantilever beam.
Further, a circular arc through hole is formed in the side wall of the concave groove close to the point A at the tail end of the upper cantilever beam, a reinforcing steel bar is arranged in the concave groove, the outer diameter of the reinforcing steel bar protrudes out of the boundary of the circular arc through hole, and the maximum length of the protruding portion of the reinforcing steel bar is smaller than the gap x between the upper cantilever beam and the lower cantilever beam so as to adjust the maximum overload protection value of the bearing frame.
Further, the vertical Y-axis direction height h of the connecting lug plate 1 3-5 times of the radius r of the connecting hole formed on the connecting hole, namely: h is a 1 ＝(3-5)r。
Further, the connecting lug plate has a width along the horizontal Z-axis directionThe following formula is used to obtain:
wherein: f (F) y : force sigma along vertical direction with connecting hole center as origin 1 ：F y Stress, l, relative to vertical section M1 of the connecting lug plate root 1 ：F y Distance to section M1, h 1 : the height of the connecting lug plate in the vertical direction;
wherein sigma 1 Less than or equal to sigma Permit(s) Then->Sigma is taken out 1 Near sigma Permit(s) Obtaining b 1 。
Further, the height h between the top surface and the bottom surface of the upper cantilever beam 2 The following formula is used to obtain:
wherein sigma 2 Less than or equal to sigma Permit(s) Then->l 2 Distance from the center line of the connecting hole to the section M2; given F y 、l 2 、b 2 Sum sigma Permit(s) Wherein the bearing frame has a width b along the horizontal Z-axis direction 2 ＝b 1 +b 0 Wherein b 0 For the distance between the two connecting ear plates, h can be determined 2 。
The beneficial effects of the utility model are as follows:
the force measuring part of the force measuring sensor is of an L-shaped structure, a groove-shaped gap with a folded edge is arranged between the upper cantilever beam and the lower cantilever beam of the force bearing frame, and the gap x matched in the vertical direction is the sum of the horizontal traction resistance and the deflection value of the resultant force of the forces in the vertical direction to the point A at the tail end of the cantilever beam, so that the force bearing frame is prevented from being damaged. When force is measured, two groups of strain gauges are symmetrically arranged on the upper surface and the lower surface of the connecting lug plate respectively, so that uneven stress is prevented; two groups of strain gauges are symmetrically arranged on the top surface and the bottom surface of the upper cantilever beam respectively to form a full-bridge force measuring structure, and the measuring result is not influenced under the action of lateral force; h is of 2 And determining the length of the bearing frame, ensuring that the stress is within the allowable stress range, ensuring the measurement accuracy and preventing the bearing frame from being damaged in order to meet the bearing capacity of the bearing frame.
Drawings
Fig. 1 is a schematic diagram of an application structure of the present utility model.
Fig. 2 is a schematic perspective view of a load cell according to the present utility model.
Fig. 3 is a front view of the load cell of fig. 2.
Fig. 4 is an enlarged schematic view of the portion I of fig. 3.
Fig. 5 is a top view of fig. 3.
Fig. 6 is a schematic diagram showing the attachment of the strain gauge of example 1.
FIG. 7 is a schematic diagram showing the attachment of a strain gauge according to example 2
Fig. 8 is a block diagram of the various hardware connections of the present utility model.
In the figure: 1. the device comprises a hanging frame, a tension sensor, an angle sensor, an upper pull rod, a connecting frame, an upper connecting rod, a cross beam, a load cell I, a connecting lug plate and a connecting lug plate, 62, connecting holes, 63, inclined planes, 64, upper cantilever beams, 65, connecting plates, 66, lower cantilever beams, 67, through holes, 68, gaps, 7, force sensor II, 8 and lower pull rods.
Detailed Description
The utility model is described in detail below with reference to the drawings and examples.
Example 1: as shown in fig. 1, a load cell of the present utility model is used in a suspension type space force measuring system, the force measuring system adopts two load cells of the present utility model, namely a load cell i 6 and a load cell ii 7, the force measuring system includes:
the upper pull rod 4 is connected with the pull sensor 2 and the angle sensor 3 in series, one end of the upper pull rod 4 connected with the pull sensor 2 is connected with the upper suspension of the tractor suspension bracket 1, and the other end of the upper pull rod is connected with an upper connecting rod 51 node of the to-be-tested tool connecting frame 5;
the number of the lower pull rods 8 is two, one end of the lower pull rod is connected with the lower suspension of the tractor suspension bracket 1, the other end of the lower pull rod is respectively connected with the force transducer I6 and the force transducer II 7, and the two force transducers are both connected with the cross beam 52 of the machine tool to be tested through U-shaped bolts;
the tension sensor 2, the angle sensor 3 and the two force sensors I6 and II 7 are respectively connected with a computer through a strain amplifying circuit board and a data acquisition device, and resultant force in all directions is calculated and displayed through the computer.
As shown in FIG. 8, the signal wires of the load cell I6 and the load cell II 7 are respectively connected with the strain gauge amplifying circuit board I, the signal wire of the tension sensor is connected with the strain gauge amplifying circuit board II, and the output signal wires of the two strain gauge amplifying circuit boards I and II are respectively connected with a computer through a data acquisition device. The storage battery supplies power to the angle sensor, and the data acquisition device supplies power supply voltage to the strain gauge amplifying plate.
As shown in fig. 2-5, the load cell i 6 and the load cell ii 7 have the same structure and are symmetrically arranged, and the structure of the load cell i 6 will be described in detail by taking the load cell i 6 as an example: one end of the force sensor I6 is provided with a connecting plate 65, four mounting holes are formed in the connecting plate and are used for being connected with a machine to be tested through U-shaped bolts, the other end of the connecting plate is provided with a connecting lug plate 61 and used for being connected with a lower pull rod, a force bearing frame is arranged between the connecting plate 65 and the connecting lug plate 61 and is of a frame structure with a hollow middle part, a gap 67 is formed at one side of the force bearing frame, which is close to the connecting lug plate 61, so that an upper cantilever beam 64 is formed at the upper part, and a lower cantilever beam 66 is formed at the lower part; the gap 67 between the upper and lower cantilever beams 64, 66 is a groove structure with a folded edge, so that the force measuring part formed by the upper cantilever beam 64 and the connecting lug plate 61 forms an L-shaped structure.
As shown in FIG. 6, two groups of strain sensors, R, are symmetrically arranged on the upper and lower surfaces of the connection ear plate 61, respectively 1 、R 2 And R is 3 、R 4 Uneven stress is prevented; the top surface and the bottom surface of the upper cantilever beam 64 are symmetrically provided with two groups of strain sensors respectively, R is respectively 5 、R 6 And R is 7 、R 8 The full bridge connection is formed, the measuring result is not influenced under the action of lateral force, and each strain sensor is connected with a computer through a data acquisition device.
As shown in fig. 3 and 4, the gap x between the upper and lower cantilever beams 64 and 66 in the vertical direction is the sum of the deflection value of the resultant force of the horizontal traction resistance and the vertical force to the point a of the cantilever beam end, and the gap x is 1mm in this example. The side wall of the concave groove near the point A at the tail end of the upper cantilever beam 64 is provided with a circular arc through hole 68, a reinforcing steel bar is arranged in the concave groove, the outer diameter of the reinforcing steel bar protrudes out of the boundary of the circular arc through hole 68, and the maximum length of the protruding part is smaller than the clearance x between the upper cantilever beam 64 and the lower cantilever beam 66 so as to adjust the maximum overload protection value of the bearing frame.
The connecting lug plate 61 in this example has a vertical Y-axis direction height h 1 3-5 times the radius r of the connecting hole 62 formed therein, namely: h is a 1 = (3-5) r. In this example, r is 12mm, taking h 1 ＝3r＝36mm；
The width of the connecting lug plate 61 along the horizontal Z-axis directionThe following formula is used to obtain:
wherein: f (F) y : force in vertical direction with connecting hole center as origin, in this example, F is taken y ＝5000N；σ 1 ：F y Stress, l, relative to vertical section M1 of the connecting lug plate root 1 ：F y Distance to section M1, in this example l 1 ＝50mm；h 1 : the vertical direction height of the connecting lug plate is obtained:
wherein sigma 1 Less than or equal to sigma Permit(s) (σ Permit(s) Taking the allowable stress of No. 45 steel to 120 MPa), then ∈K>Sigma is taken out 1 Near sigma Permit(s) Can get +.>
This example takes b 1 The width b of the force-bearing frame along the horizontal Z-axis direction is =20mm 2 ＝b 1 +b 0 Wherein b 0 The distance between the two connecting lugs 61 is determined by the width of the end of the connected pull-down rod 8, which is 35mm in this example, to obtain b 2 ＝b 1 +b 0 ＝55mm；
The height h between the top surface and the bottom surface of the upper cantilever beam 64 2 Obtained by the following formula y Stress generated on the vertical section M2 of the inner frame of the load frame close to the connecting plate 65:
wherein sigma 2 Less than or equal to sigma Permit(s) Then->l 2 For connecting the centre line of the hole 62 to the section M 2 Is a distance of (2); given in this example F y ＝5000N、l 2 ＝100mm、b 2 =55mm and σ Permit(s) =120 MPa, can be determinedTaking h in this example 2 =25 mm, satisfying the force measurement requirement.
When the force measuring system is used, the measuring method of the computer is as follows:
the first step: loading and fixing a known load, and calibrating each tension sensor and each angle sensor;
and a second step of: zeroing, and carrying out initial calibration when no load exists;
and a third step of: firstly, inputting basic parameters including the lengths of an upper pull rod and a lower pull rod and the space positions of the upper pull rod and the lower pull rod, and obtaining sensor information, namely 4 groups of strain sensors, angle sensors and pull sensors;
fourth step: testing is carried out, and signals measured by all sensors are received at the same time;
fifth step: synthesizing resultant force in the measured direction according to the vector synthesis theorem according to the data measured by each sensor; according to actual requirements, different angles input by the angle sensor obtain resultant forces in different directions;
sixth step: judging sigma 1 、σ 2 Whether or not to exceed sigma Permit(s) If the test result exceeds the preset value, alarming, and if the test result does not exceed the preset value, continuing to test in 1-6 steps.
Example 2: this example differs from example 1 in that: as shown in fig. 6, in this example, two groups of strain gauges R are symmetrically arranged on the side surface of the connection lug plate 61 corresponding to the upper cantilever beam 64 and the upper cantilever Liang Nakuang close to the upper cantilever beam 9 、R 10 And R is 11 、R 12 The top surface and the bottom surface of the upper cantilever beam 64 are symmetrically provided with two groups of strain gauges R respectively 5 、R 6 And R is 7 、R 8 And each strain sensor is respectively connected with a computer through a data acquisition device. The test method was the same as in example 1.
The height h of the connecting lug plate 61 in the vertical Y-axis direction 1 3-5 times the radius r of the connecting hole 62 formed therein, namely: h is a 1 = (3-5) r. In this example, r is 12mm, taking h 1 ＝4r＝48mm；
The width of the connecting lug plate 61 along the horizontal Z-axis directionThe following formula is used to obtain:
wherein: f (F) y : force in vertical direction with connecting hole center as origin, in this example, F is taken y ＝10000N；σ 1 ：F y Stress, l, relative to vertical section M1 of the connecting lug plate root 1 ：F y Distance to section M1, in this example l 1 ＝50mm；h 1 : the vertical direction height of the connecting lug plate is obtained:
wherein sigma 1 Less than or equal to sigma Permit(s) Then->Sigma is taken out 1 Near sigma Permit(s) Can obtain
This example takes b 1 The width b of the force-bearing frame along the horizontal Z-axis direction is =20mm 2 ＝b 1 +b 0 Wherein b 0 The distance between the two lugs 61 is determined by the width of the end of the tractor pull-down rod 8, 35mm in this example, to obtain b 2 ＝b 1 +b 0 ＝55mm。
The height from the top surface of the upper cantilever beam 64 to the inner frameDegree h 2 Obtained by the following formula y Stress generated on the vertical section M2 of the inner frame of the load frame close to the connecting plate 65:
wherein sigma 2 Less than or equal to sigma Permit(s) Then->l 2 For connecting the centre line of the hole 62 to the section M 2 Is a distance of (2); given in this example F y ＝10000N、l 2 ＝100mm、b 2 =55mm and σ Permit(s) =120 MPa, can be determinedTaking h in this example 2 =40 mm, satisfying the force measurement requirement.
Example 3: this example differs from example 1 in that: the height h of the connecting lug plate 61 in the vertical Y-axis direction 1 3-5 times the radius r of the connecting hole 62 formed therein, namely: h is a 1 = (3-5) r. In this example, r is 12mm, taking h 1 ＝5r＝60mm；
The width of the connecting lug plate 61 along the horizontal Z-axis directionThe following formula is used to obtain:
wherein: f (F) y : force in vertical direction with connecting hole center as origin, in this example, F is taken y ＝8000N；σ 1 ：F y Stress, l, relative to vertical section M1 of the connecting lug plate root 1 ：F y Distance to section M1, in this example l 1 ＝60mm；h 1 : the vertical direction height of the connecting lug plate is obtained:
wherein sigma 1 Less than or equal to sigma Permit(s) Then->Sigma is taken out 1 Near sigma Permit(s) Can obtain
This example takes b 1 The width b of the force-bearing frame along the horizontal Z-axis direction is 15mm 2 ＝b 1 +b 0 Wherein b 0 The distance between the two connecting lugs 61 is determined by the width of the end head of the connected tractor pull-down rod 8 and is 35mm, and b is obtained 2 ＝b 1 +b 0 ＝50mm。
The height h between the top surface of the upper cantilever beam 64 and the inner frame 2 Obtained by the following formula y Stress generated on the vertical section M2 of the inner frame of the load frame close to the connecting plate 65:
wherein sigma 2 Less than or equal to sigma Permit(s) Then->l 2 For connecting the centre line of the hole 62 to the section M 2 Is a distance of (2); given in this example F y ＝8000N、l 2 ＝110mm、b 2 =50mm and σ Permit(s) =120 MPa, can be determinedTaking h in this example 2 =40 mm, satisfying the force measurement requirement.
Claims (5)
1. A load cell, characterized by: one end of the connecting plate is provided with a connecting plate for connecting an implement to be tested, the other end of the connecting plate is provided with a connecting lug plate for connecting a tractor pull rod, a force bearing frame is arranged between the connecting plate and the connecting lug plate, the force bearing frame is of a frame body structure with a hollow middle part, a gap is arranged at one side of the force bearing frame, which is close to the connecting lug plate, so that an upper cantilever beam and a lower cantilever beam are separated, the upper part forms an upper cantilever beam, and the lower part forms a lower cantilever beam; the gap between the upper cantilever beam and the lower cantilever beam is a groove structure with a folded edge; the force measuring part formed by the upper cantilever beam and the connecting lug plate forms an L-shaped structure;
a circular arc through hole is formed in the side wall of the concave groove close to the point A at the tail end of the upper cantilever beam, a reinforcing steel bar is arranged in the concave groove, the outer diameter of the reinforcing steel bar protrudes out of the boundary of the circular arc through hole, and the maximum length of the protruding part is smaller than the gap x between the upper cantilever beam and the lower cantilever beam so as to adjust the maximum overload protection value of the force bearing frame;
during force measurement, two groups of strain gauges R are symmetrically arranged on the upper surface and the lower surface of the connecting lug plate respectively 1 、R 2 And R is 3 、R 4 The method comprises the steps of carrying out a first treatment on the surface of the The top surface and the bottom surface of the upper cantilever beam are symmetrically provided with two groups of strain gauges R respectively 5 、R 6 And R is 7 、R 8 The data wires are connected with the computer through strain amplification and a data acquisition device respectively;
or, during force measurement, two groups of strain gauges R are symmetrically arranged on the side surface of the connecting lug plate corresponding to the upper cantilever beam and the upper cantilever Liang Nakuang close to the side surface 9 、R 10 And R is 11 、R 12 The top surface and the bottom surface of the upper cantilever beam are symmetrically provided with two groups of strain gauges R respectively 5 、R 6 And R is 7 、R 8 And the data wires are respectively connected with a computer through a strain amplifying and data collecting device.
2. The load cell of claim 1 wherein: the clearance x between the upper cantilever beam and the lower cantilever beam along the vertical direction is the sum of the deflection value of the resultant force of the horizontal traction resistance and the vertical force to the point A at the tail end of the cantilever beam.
3. The load cell of claim 1 wherein: the method is characterized in that: the height h of the connecting lug plate in the vertical Y-axis direction 1 3-5 times the radius r of the connecting hole formed on the connecting hole.
4. According to claim 1The force transducer is characterized in that: the width of the connecting lug plate along the horizontal Z-axis directionThe following formula is used to obtain:
wherein: f (F) y : force in the vertical direction with the center of the connecting hole as the origin; sigma (sigma) 1 ：F y The section M1 passes through the strain gage of the connecting lug plate relative to the stress of the vertical section M1 of the root part of the connecting lug plate; l (L) 1 ：F y Distance to section M1, h 1 : the height of the connecting lug plate in the vertical direction;
wherein sigma 1 Less than or equal to sigma Permit(s) Then->Sigma is taken out 1 Near sigma Permit(s) Obtaining b 1 。
5. The load cell of claim 1 wherein: the height h between the top surface and the bottom surface of the upper cantilever beam 2 The following formula is used to obtain:
wherein sigma 2 Less than or equal to sigma Permit(s) Then->l 2 The distance from the center line of the connecting hole to the section M2 is the distance from the center line of the connecting hole to the section M2, and the section M2 passes through the upper cantilever strain gauge; given F y 、l 2 、b 2 Sum sigma Permit(s) Wherein the bearing frame has a width b along the horizontal Z-axis direction 2 ＝b 1 +b 0 Wherein b 0 For the distance between the two connecting ear plates, h can be determined 2 。
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| CN201710595808.2A CN107402100B (en) | 2017-07-20 | 2017-07-20 | Force transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595808.2A CN107402100B (en) | 2017-07-20 | 2017-07-20 | Force transducer |
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| CN107402100A CN107402100A (en) | 2017-11-28 |
| CN107402100B true CN107402100B (en) | 2024-03-12 |
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| CN201710595808.2A Active CN107402100B (en) | 2017-07-20 | 2017-07-20 | Force transducer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110082011B (en) * | 2019-04-08 | 2021-03-05 | 太原理工大学 | Multi-stage force and displacement measuring sensor |
| CN114061808B (en) * | 2021-11-17 | 2023-09-19 | 西安石油大学 | Mechanical sensor mounting method and method for measuring iron roughneck torque by using mechanical sensor |
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| CN104614112A (en) * | 2015-02-02 | 2015-05-13 | 北京理工大学 | Combined high-accuracy three-axis force sensor |
| CN204389085U (en) * | 2015-02-02 | 2015-06-10 | 北京理工大学 | Combined type high precision triaxial force sensor |
| CN106768561A (en) * | 2017-01-23 | 2017-05-31 | 吉林大学 | A kind of automobile-used farm implements device for measuring force of soil box and its force measuring method |
| CN207019827U (en) * | 2017-07-20 | 2018-02-16 | 沈阳农业大学 | A kind of force cell |
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