CN202522369U - Engineering vehicle torque sensor calibration device - Google Patents

Engineering vehicle torque sensor calibration device Download PDF

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Publication number
CN202522369U
CN202522369U CN2012200319441U CN201220031944U CN202522369U CN 202522369 U CN202522369 U CN 202522369U CN 2012200319441 U CN2012200319441 U CN 2012200319441U CN 201220031944 U CN201220031944 U CN 201220031944U CN 202522369 U CN202522369 U CN 202522369U
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CN
China
Prior art keywords
hydraulic cylinder
torque sensor
oil pipe
oil
cavity
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2012200319441U
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Chinese (zh)
Inventor
徐礼超
葛如海
胡满江
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Jiangsu University
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Jiangsu University
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Priority to CN2012200319441U priority Critical patent/CN202522369U/en
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Publication of CN202522369U publication Critical patent/CN202522369U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an engineering vehicle torque sensor calibration device, so as to calibrate sensitivity and linearity of a torque sensor of an engineering vehicle and other mechanical drive systems. An upper cavity of a left hydraulic cylinder is communicated with a liquid storage tank via a No.2 oil pipe. The lower cavity of the left hydraulic cylinder is connected with an upper cavity of a right hydraulic cylinder via a connecting oil pipe. A motor is connected with a variable displacement pump. The oil outlet of the variable displacement pump is connected with the lower cavity of the right hydraulic cylinder via a No.1 oil pipe. The oil inlet of the variable displacement pump is communicated with the liquid storage tank via a filter. A force measurement arm is mounted above the left hydraulic cylinder and the right hydraulic cylinder. A left piston rod is connected with the left hinge point of the force measurement arm via a rigid rod piece. The upper end of the right piston rod of the right hydraulic cylinder is fixedly connected with one end of a steel wire rope. The steel wire rope passes across a fixed pulley, and the other end of the steel wire rope is connected with the right hinge point of the force measurement arm. With the engineering vehicle torque sensor calibration device disclosed by the utility model, a transmission shaft is prevented from lateral bending as the single end bears a torque, calibration work of the full scale static characteristics of the torque sensor can be realized and the calibration process has a good repeatability.

Description

Engineering truck torque sensor caliberating device
Technical field
The utility model relates to engineering truck torque sensor caliberating device, is applicable to the sensitivity and the linearity demarcation of engineering truck and other machine driven system torque sensor.
Background technology
Torque is the basic load form of Transmission Shaft of Mobile Engineering Vehicles; It is the important indicator of engineering truck power output; Whether qualified be one of check product sign, be the required argument of calculating machine power and efficient, and it is related to the mechanical property life-span and the security of engineering truck; If the static state of measuring transmission shaft and dynamic torque that can be accurate, timely, convenient, reliable; Just can analyze and study its force-bearing situation and the mechanism of some physical phenomenon, this improves and the raising mechanical property the development design theory; Guarantee that safe operation all plays an important role, so torque measurement is a requisite content in the work such as research and development, test analysis, quality inspection, safety and optimal control of Transmission Shaft of Mobile Engineering Vehicles.
Torque sensor mainly contains two big types; The first kind is to obtain magnetic (tooth) the grid formula torque sensor of signal through magneto-electric induction; The essence of this type sensor output signal is the angular displacement signal that two-way has phase differential, need carry out combined treatment to signal and just can obtain moment information.Second type is to be the torque sensor of sensitive element with the resistance strain gage, rotating shaft or with elastic shaft that rotating shaft is connected in series on four precise resistance/strain sheets are installed, and connect into the Hui Sidun electric bridge to them.Under torque, the microdeformation of rotating shaft will cause that all the resistance of foil gauge changes, and the relation of being in proportion of the output signal of electric bridge and torque.The driving voltage of electric bridge and the load mode of measuring-signal have two kinds: a kind of is that contact transmits, and transmits driving voltage and measuring-signal through slip ring and brush; Another kind is contactless transmission, comprises that the transformer induction mode transmits and micro cell power supply, wireless transmission measuring-signal etc.At present, do not see in the prior art with the resistance strain gage being the device that the performance of the torque sensor of sensitive element is demarcated.
Summary of the invention
The purpose of the utility model is to provide a kind of engineering truck torque sensor caliberating device; Adopt this caliberating device that the performance of torque sensor is demarcated; Can guarantee that torque sensor has higher measuring accuracy, and then improve the accuracy that the machine driven system dtc signal is measured.
The technical scheme that the utility model adopts is: comprise left hydraulic cylinder and right hydraulic cylinder; Left hydraulic cylinder comprises the left piston bar; Right hydraulic cylinder comprises right piston rod, and the left hydraulic cylinder epicoele communicates with liquid reserve tank through No. two oil pipes, and the left hydraulic cylinder cavity of resorption links to each other through being connected oil pipe with right hydraulic cylinder epicoele; Motor link variable pump, the oil-out of variable output pump is connected with right hydraulic cylinder cavity of resorption through an oil pipe, and the oil-in of variable output pump communicates with liquid reserve tank through filtrator; Surplus valve communicates with liquid reserve tank through oil pipe; The top of left hydraulic cylinder and right hydraulic cylinder is provided with the dynamometry arm; The left piston bar links to each other with the left pin joint of dynamometry arm through rigid bar; The upper end of the right piston rod of right hydraulic cylinder is fixedly connected an end of wire rope, and fixed pulley walked around by wire rope and the other end links to each other with the right pin joint of dynamometry arm; Transmission shaft be horizontally disposed with and front end through a forward flange dish and a bolt and the dynamometry arm is fastenedly connected, the rear end is fastenedly connected through rear stub and No. two bolts and gusset; On transmission shaft, torque sensor is set near forward flange dish position; Torque sensor is made up of according to the full-bridge circuit mode four identical resistance strain gages of resistance; Resistance strain gage becomes 45 ° or 135 ° of angles with the axis of transmission shaft, a diagonal angle of full-bridge circuit connects battery, and another diagonal angle connects signal transmitter; The signal that signal transmitter sends is received by signal receiver, and signal receiver connects data collecting instrument.
The utlity model has following advantage:
1, this apparatus structure is novel, and dynamometry arm two ends are stressed in the opposite direction, and lateral bending takes place when preventing that transmission shaft is single-ended and bearing torque.
2, this device is easy to operate, through regulated variable pump and surplus valve, can realize the staking-out work to torque sensor full scale static characteristics, the calibration process good reproducibility.
3, after the torque sensor and the signal telemetry system integration thereof are demarcated, be installed in transmission shaft measuring point place as a whole, nominal data is more reasonable, and test data is truer.
4, in the output circuit of variable output pump, surplus valve is installed, the hydraulic pressure that prevents variable output pump output is too high and cause that relevant components and parts damage in the caliberating device.
5, adjustable base plate is set in caliberating device, can satisfies the torque sensor performance of different length transmission shaft and demarcate needs.
Description of drawings
Fig. 1 is the structural drawing of engineering truck torque sensor caliberating device;
Among the figure: 1. left hydraulic cylinder; 2. left piston bar; 3. guide piece; 4. rigid bar; 5. left pin joint; 6. dynamometry arm; 7. forward flange dish; 8. bolt; 9. torque sensor; 10. signal transmitter; 11. transmission shaft; 12. rear stub; 13. No. two bolts; 14. gusset; 15. adjustment nut; 16. adjustable base plate; 17. fixed base plate; 18. back up pad; 19. signal receiver; 20. data collecting instrument; 21. right pin joint; 22. wire rope; 23. right piston rod; 24. right hydraulic cylinder; 25. fixed pulley; 26. oil pipe; 27. hydralic pressure gauge; 28. surplus valve; 29. filtrator; 30. variable output pump; 31. motor; 32. liquid reserve tank; 33. No. two oil pipes; 34. connection oil pipe; 35. No. two hydralic pressure gauges.
Embodiment
As shown in Figure 1, this caliberating device comprises left hydraulic cylinder 1 and right hydraulic cylinder 24, and left hydraulic cylinder 1 comprises left piston bar 2, and right hydraulic cylinder 24 comprises right piston rod 23, above left hydraulic cylinder 1 and right hydraulic cylinder 24, dynamometry arm 6 is set.All through being bolted to ground, left hydraulic cylinder 1 epicoele communicates with liquid reserve tank 32 through No. two oil pipes 33 in the bottom of left hydraulic cylinder 1 and right hydraulic cylinder 24, and left hydraulic cylinder 1 cavity of resorption links to each other through being connected oil pipe 34 with right hydraulic cylinder 24 epicoeles.Connecting No. two hydralic pressure gauges 35 of installation on the oil pipe 34, in order to show left hydraulic cylinder 1 cavity of resorption and right hydraulic cylinder 24 epicoele oil pressure.Motor 31 link variable pumps 30, the oil-out of variable output pump 30 is connected with right hydraulic cylinder 24 cavity of resorptions through an oil pipe 26, and the oil-in of variable output pump 30 communicates with liquid reserve tank 32 through filtrator 29.Hydralic pressure gauge 27 and surplus valve 28 are installed on oil pipe 26, and surplus valve 28 communicates with liquid reserve tank 32 through oil pipe, and No. one hydralic pressure gauge 27 is used for showing right hydraulic cylinder 24 cavity of resorption oil pressure.
The left piston bar 2 of left hydraulic cylinder 1 links to each other with the left pin joint 5 of dynamometry arm 6 through rigid bar 4; The upper end of the right piston rod 23 of right hydraulic cylinder 24 is fixedly connected an end of wire rope 22; The other end of wire rope 22 links to each other with the right pin joint 21 of dynamometry arm 6; Wire rope 22 is walked around fixed pulley 25 simultaneously, in order to change the force direction that receives at right pin joint 21 places, guarantees that the left pin joint 5 of dynamometry arm 6 two ends equidistance and right pin joint 21 places form opposition.
Transmission shaft 11 is horizontally disposed with, and the front end of transmission shaft 11 is fastenedly connected with dynamometry arm 6 with forward flange dish 7 and a bolt 8, and the rear end of transmission shaft 11 is fastenedly connected with gusset 14 with rear stub 12 and No. two bolts 13.The bottom of gusset 14 adopts welding manner to be connected with adjustable base plate 16, and simultaneously, adjustable base plate 1 connects fixed base plate 17 through adjustment nut 15, and fixed base plate 17 through bolt on the ground.Lower disposed back up pad 18 in transmission shaft 11 stage casings, back up pad 18 are in order to supporting shaft 11 and dynamometry arm 6, and assurance transmission shaft 11 is horizontal all the time.
On transmission shaft 11, torque sensor 9 is set near the position of forward flange dish 7; Torque sensor 9 is made up of according to the full-bridge circuit mode four identical resistance strain gages of resistance, tightly sticks on transmission shaft 11 with epoxy adhesive, makes resistance strain gage become 45 ° or 135 ° of angles with the axis of transmission shaft 11; A diagonal angle of full-bridge circuit is connected the 5V dry cell; Another diagonal angle connects signal transmitter 10, and the signal that signal transmitter 10 sends is received by signal receiver 19, and signal receiver 19 connects data collecting instrument 20; Signal receiver 19 is given data collecting instrument 20 with the signal that receives and is shown, and realizes the wireless telemetering purpose of dtc signal.
Skew before and after taking place when preventing that dynamometry arm 6 from swinging is provided with guide piece 3 below the left end place of dynamometry arm 6, guide piece 3 is fixedly connected dynamometry arms 6, and is excessive to prevent timing signal dynamometry arm beat.For the torque sensor 9 that satisfies on the different length transmission shaft 11 needs of demarcating are installed, are provided with adjustable base plate 16, through regulating adjustment nut 15 adjustable base plate 16 is moved forward and backward, in order to distance between adjustment dynamometry arm 6 and the gusset 14.
After the whole calibrating device is installed and is connected completion; Drive variable output pump 30 work through motor 31, will pump from liquid reserve tank 32, get into right hydraulic cylinder 24 cavity of resorptions through an oil pipe 26 through the hydraulic oil that filtrator 29 filters; It is up to promote right piston rod 23 and wire rope 22; Make the right pin joint 21 of dynamometry arm 6 produce a downward acting force, meanwhile, right hydraulic cylinder 24 epicoele fluid get into left hydraulic cylinder 1 cavity of resorption through connecting oil pipe 34; Left hydraulic cylinder 1 cavity of resorption oil pressure increases and to promote left piston bar 2 up, and the left pin joint 5 that drives dynamometry arms 6 through rigid bar 4 produces an acting force that makes progress.Left hydraulic cylinder 1 epicoele fluid flows back to liquid reserve tank 32 through No. two oil pipes 33, and right hydraulic cylinder 24 cavity of resorption oil pressure are by surplus valve 28 controls, and after oil pressure reached the opening pressure that surplus valve 28 sets up, the hydraulic oil that variable output pump 30 pumps flowed back to liquid reserve tank 32 through surplus valve 28; Under the left pin joint 5 and 21 two opposite force effects of right pin joint of dynamometry arm 6; Make transmission shaft 11 receive pure torque; Level of torque equal left pin joint 5 and right pin joint 21 suffered acting forces and with the product of left pin joint 5 to transmission shaft 11 centre distances; Wherein left pin joint 5 suffered acting forces are the product of left hydraulic cylinder 1 piston area and its cavity of resorption oil pressure, and right pin joint 21 suffered acting forces are the product of right hydraulic cylinder 24 piston areas chamber upper and lower with it oil pressure difference.Left hydraulic cylinder 1 cavity of resorption oil pressure and right hydraulic cylinder 24 epicoele oil pressure are read by No. two hydralic pressure gauges 35, and right hydraulic cylinder 24 cavity of resorption oil pressure are read by a hydralic pressure gauge 27.Timing signal carries out in strict accordance with sensor static demarcating step, calculates transmission shaft 11 in theory and bears in the torque capacity scope, realizes the full scale static demarcating work of torque sensor 9 through regulated variable pump 30 and surplus valve 28.Because transmission shaft 11 reverse rotation can occur in the course of the work; Therefore also need the torque sensor 9 that is installed on the transmission shaft 11 is oppositely loaded demarcation, only need this moment the position of adjustment left hydraulic cylinder 1, rigid bar 4 and right hydraulic cylinder 24, wire rope 22, fixed pulley 25 to realize.For reducing the manual operation error effect, under the same test condition, demarcate respectively three times, get its average as the torque sensor nominal data under this operating mode; For guaranteeing that torque sensor 9 is demarcated sensitivity and the linearity is consistent with the actual measurement situation; Guarantee the accuracy of kinematic train test data; Taked torque sensor 9, signal transmitter 10, signal receiver 19 and data collecting instrument 20 integrated and demarcated, and done the as a whole measure of installing, testing at engineering truck torque measuring point.

Claims (4)

1. engineering truck torque sensor caliberating device; Comprise left hydraulic cylinder (1) and right hydraulic cylinder (24); Left hydraulic cylinder (1) comprises left piston bar (2); Right hydraulic cylinder (24) comprises right piston rod (23), it is characterized in that: left hydraulic cylinder (1) epicoele communicates with liquid reserve tank (32) through No. two oil pipes (33), and left hydraulic cylinder (1) cavity of resorption links to each other through being connected oil pipe (34) with right hydraulic cylinder (24) epicoele; Motor (31) link variable pump (30), the oil-out of variable output pump (30) is connected with right hydraulic cylinder (24) cavity of resorption through an oil pipe (26), and the oil-in of variable output pump (30) communicates with liquid reserve tank (32) through filtrator (29); Surplus valve (28) communicates with liquid reserve tank (32) through oil pipe; Left hydraulic cylinder (1) is provided with dynamometry arm (6) with the top of right hydraulic cylinder (24); Left piston bar (2) links to each other with the left pin joint (5) of dynamometry arm (6) through rigid bar (4); The upper end of the right piston rod (23) of right hydraulic cylinder (24) is fixedly connected an end of wire rope (22), and fixed pulley (25) walked around by wire rope (22) and the other end links to each other with the right pin joint (21) of dynamometry arm (6); Transmission shaft (11) be horizontally disposed with and front end through forward flange dish (7) and a bolt (8) and dynamometry arm (6) be fastenedly connected, the rear end is fastenedly connected through rear stub (12) and No. two bolts (13) and gusset (14); On transmission shaft (11), torque sensor (9) is set near forward flange dish (7) position; Torque sensor (9) is made up of according to the full-bridge circuit mode four identical resistance strain gages of resistance; Resistance strain gage becomes 45 ° or 135 ° of angles with the axis of transmission shaft (11); A diagonal angle of full-bridge circuit connects battery; Another diagonal angle connects signal transmitter (10), and the signal that signal transmitter (10) sends is received by signal receiver (19), and signal receiver (19) connects data collecting instrument (20).
2. according to the said engineering truck torque sensor of claim 1 caliberating device; It is characterized in that: the bottom of gusset (14) and adjustable base plate (16) are affixed; Adjustable base plate (1) connects fixed base plate (17) through adjustment nut (15), fixed base plate (17) through bolt on ground.
3. according to the said engineering truck torque sensor of claim 1 caliberating device, it is characterized in that: a hydralic pressure gauge (27) and surplus valve (28) are set on the oil pipe (26), on the connection oil pipe (34) No. two hydralic pressure gauges (35) are set.
4. according to the said engineering truck torque sensor of claim 1 caliberating device, it is characterized in that: the below at the left end place of dynamometry arm (6) is provided with the guide piece (3) that is fixedly connected dynamometry arm (6).
CN2012200319441U 2012-02-01 2012-02-01 Engineering vehicle torque sensor calibration device Expired - Fee Related CN202522369U (en)

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Application Number Priority Date Filing Date Title
CN2012200319441U CN202522369U (en) 2012-02-01 2012-02-01 Engineering vehicle torque sensor calibration device

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Application Number Priority Date Filing Date Title
CN2012200319441U CN202522369U (en) 2012-02-01 2012-02-01 Engineering vehicle torque sensor calibration device

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103018006A (en) * 2012-12-24 2013-04-03 中国船舶重工集团公司第七○二研究所 Device and method for bending moment calibration of measurement beam for ship model wave load test
CN103033314A (en) * 2012-12-24 2013-04-10 中国船舶重工集团公司第七○二研究所 Torsion calibration device and method for measurement beam used for ship model wave load test
CN103852211A (en) * 2012-11-28 2014-06-11 江苏金风科技有限公司 Bending moment sensor calibration device and calibration method
CN104155053A (en) * 2014-08-18 2014-11-19 南通常测机电股份有限公司 Hydraulic balance loading large torque static calibration device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103852211A (en) * 2012-11-28 2014-06-11 江苏金风科技有限公司 Bending moment sensor calibration device and calibration method
CN103852211B (en) * 2012-11-28 2016-08-03 江苏金风科技有限公司 Moment of flexure sensor calibration apparatus and scaling method
CN103018006A (en) * 2012-12-24 2013-04-03 中国船舶重工集团公司第七○二研究所 Device and method for bending moment calibration of measurement beam for ship model wave load test
CN103033314A (en) * 2012-12-24 2013-04-10 中国船舶重工集团公司第七○二研究所 Torsion calibration device and method for measurement beam used for ship model wave load test
CN103033314B (en) * 2012-12-24 2015-05-20 中国船舶重工集团公司第七○二研究所 Torsion calibration method for measurement beam used for ship model wave load test
CN104155053A (en) * 2014-08-18 2014-11-19 南通常测机电股份有限公司 Hydraulic balance loading large torque static calibration device

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121107

Termination date: 20130201

CF01 Termination of patent right due to non-payment of annual fee