CN101929854B - 3-freedom-degree wheel clearance detection platform - Google Patents
3-freedom-degree wheel clearance detection platform Download PDFInfo
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- CN101929854B CN101929854B CN2010102533695A CN201010253369A CN101929854B CN 101929854 B CN101929854 B CN 101929854B CN 2010102533695 A CN2010102533695 A CN 2010102533695A CN 201010253369 A CN201010253369 A CN 201010253369A CN 101929854 B CN101929854 B CN 101929854B
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Abstract
The invention relates to a 3-freedom-degree wheel clearance detection platform. The platform mainly comprises two symmetrical wheel clearance detection platforms respectively on the left and the right, a wheel clearance frame assembly (A) on each detection platform is fixed on the foundation, an upper platen framework assembly (B) are arranged on the wheel clearance frame assembly (A) to be in sliding fit with the assembly (A).One end of each piston rod fuel tank assembly is connected with the wheel clearance frame assembly (A), the other end thereof is connected with the upper platen framework assembly (B), an upper platen assembly (F) is in screw fastening with the upper platen framework assembly (B), the three fuel tanks of the three piston rod fuel tank assemblies stretch and move to drive the upper platen assembly (F) to move and rotate. The invention aims to detect the size of clearance of various parts of the wheel and take corresponding measures according to the size of the clearance to improve rideability of the automobiles. The device of the invention can detect wheel clearance at three freedom degrees, thus the detection is more accurate and intelligent and the structure of the device is simple.
Description
Technical field
The present invention relates to the automotive wheel gap detection device, particularly a kind of 3-freedom-degree wheel gap detection device.
Background technology
In recent years, popularize along with what vehicle safety performance detected, as in the measuring station test item important one, the detection in automobile chassis gap is absolutely necessary.So-called automobile chassis loosening gap; Just be meant automotive wheel assembly, suspension system and the steering loosening gap between the parts that matches, like hub bearing pair, stub matching pair, bulb matching pair, independent suspension swing arm hinge, pull bar, hinge of leaf spring, U-bolts etc. are located and the cooperation loosening gap of power train in length and breadth.The tolerance clearance of chassis each parts of running gear must remain within certain scope, could guarantee the cruising of automobile.No matter wherein any one excesssive gap or insufficient lubrication all can cause the rideability of automobile to descend, and control stability degenerates; Driving is played pendulum; Tire and the accelerated wear test of suspension part turn to insensitive or the like adverse consequences, more can cause the generation of traffic hazard when serious.So the necessary frequent detection of strengthening chassis running gear loosening gap, maintenance is in time driven a vehicle with assurance, security and reliability.
Automobile running system and power train fault only just can occur in running car, and inspection was wasted time and energy when automobile stopped, and is subtle.Automotive wheel is placed on the detection flat board; Wait the pressure of direction to move all around through flat board; Apply the acting force of all directions to wheel; Wheel was stressed when simulated automotive moved on the road surface, the technology status that just can fully expose running gear and each parts of power train and each junction tightness, thereby failure judgement position fast and accurately.
At present, mainly containing artificial experience for the automobile chassis clearance detection platform detects and two kinds of microcomputer-based intelligent detections.
Artificial experience detects: during detection, on the deck plate that the front-wheel or the trailing wheel of automobile is parked in monitor station.Utilize joystick control platen to rotate by operating personnel then with the driving automobile tire motion.In trench, with the naked eye observe running gear and power train gap everywhere through operating personnel, thereby utilize experience to judge whether the automobile chassis gap is qualified.
Microcomputer-based intelligent detects: during detection; The wheel of automobile is parked on the sliding panel of monitor station; Open CS by the testing staff then and make the motion of sliding panel front, rear, left and right; Thereby the motion of driving automobile wheel front, rear, left and right is through control brake and parking brake, by computer data acquisition and calculated gap.
The problem that existing chassis clearance detection platform exists: for the artificial experience monitor station; Because this check needs the supervisory personnel to stand in the automobile engine oil pan below; The greasy dirt that leaks, dust that the chassis falls during vibration and water, the immobilising trench of air make working environment very abominable.Therefore, domestic each measuring station testing staff is reluctant to do this check.And often because omission causes serious accident.Testing process can not realize robotization, and testing result lacks reliability.For the microcomputer-based intelligent monitor station, platen can only x, the y direction moves, and complex structure.Existing automobile chassis clearance detection platform can not satisfy the requirement of detection line simultaneously, so must work out a kind of detection system equipment of science of renewal.
Summary of the invention
The shortcoming that the objective of the invention is to overcome present automotive wheel gap detection device is with not enough, and a kind of 3-freedom-degree wheel gap detection device of exploitation.
This device can be on Three Degree Of Freedom the gap of detection by quantitative automotive wheel; The linearity of controlling three oil cylinders of vertical and horizontal through the flow of control Hydraulic Station hydraulic oil moves; Three directions of the upper platen skeleton that drive is attached thereto move or rotate; Thereby three directions that form the upper platen diamond plate move or rotate, and finally drive wheel three direction motions on platen, measure the wheel gap.
Above-mentioned purpose of the present invention realizes that through following technical scheme accompanying drawings is following:
A kind of 3-freedom-degree wheel clearance detection platform; Mainly form by the wheel clearance detection platform of left and right two symmetries; Each monitor station comprises: wheel gap frame assembled body A, upper platen skeleton assembly B, back double rod cylinder assembly assembly C, preceding double rod cylinder assembly assembly D, vertical single-piston rod hydraulic cylinder assembly assembly E, upper platen assembly F; Described wheel gap frame assembled body A is fixed on the basis; The upper slide steel ball supporting pad 19 of described upper platen skeleton assembly B slides on the steel ball 5 of wheel gap frame assembled body A; The upper platen skeleton 18 of upper platen skeleton assembly B is connected with forward and backward double rod cylinder assembly assembly D, C and vertical single-piston rod hydraulic cylinder assembly assembly E through piston rod earrings bearing pin 35; And drive moving and rotating of upper platen skeleton 18 by the telescopic moving of three oil cylinders of above-mentioned piston rod hydraulic cylinder assembly assembly; Back double rod cylinder assembly assembly C, preceding double rod cylinder assembly assembly D, vertical single-piston rod hydraulic cylinder assembly assembly E are connected with wheel gap frame assembled body A screw through oil cylinder tail earrings bearing 28; The upper platen 38 of upper platen assembly F is connected with upper platen skeleton 18 screws, and is moved and rotated by upper platen skeleton 18 drive upper platen assembly F.
Described wheel gap frame assembled body A mainly is made up of transfer packaged ligand 17, steel ball assembly and seal of framework, aviation plug assembly 3, inside and outside oil pipe; Described framework is connected channel-section steel 14 and is welded by vertical outer side edges channel-section steel 13, front channel-section steel 9, limit channel-section steel 15, longitudinal medial limit channel-section steel 1, bottom supporting channel-section steel 16 with the bottom; Described aviation plug assembly 3 is connected on the longitudinal medial limit channel-section steel 1 through aviation fixed head seven apertures in the human head 2 screws; The upper edge of framework connects through screw is equipped with side cover plate 10 and frame anti-attrition nylon backing plate 8; The inside and outside oil pipe packaged ligand 17 of transferring is connected an end of longitudinal medial limit channel-section steel 1 through screw; Steel ball 5 in the described steel ball assembly is supported by the steel ball lower support pad that is placed on 7 li of steel ball lower support seats 6, and steel ball lower support seat 7 is connected on the steel ball lower support disk 4 through screw, and 4 steel ball lower support disks 4 are welded on the bottom supporting channel-section steel 16; Steel ball lower support seat 7 bottoms are that ring-type is to reduce contact area; Combine closely with mating surface, sealing strip skeleton 11 is welded on each channel-section steel limit, and polyethylene sealing strip 12 is bonded on the sealing strip skeleton 11.
Described upper platen skeleton assembly B comprises upper platen skeleton 18 and upper slide steel ball supporting pad 19; Upper platen skeleton 18 is connected with upper slide steel ball supporting pad 19 screws; Upper slide steel ball supporting pad 19 is slidingly matched with the steel ball 5 of wheel gap frame assembled body A; Upper platen skeleton 18 is connected with forward and backward double rod cylinder assembly assembly D, C and vertical single-piston rod hydraulic cylinder assembly assembly E through piston rod earrings bearing pin 35, and upper platen skeleton 18 drives mobile and rotation by the telescopic moving of three oil cylinders of above-mentioned piston rod hydraulic cylinder assembly assembly.
Described forward and backward double rod cylinder assembly assembly D, C and vertical single-piston rod hydraulic cylinder assembly assembly E; Removing the above two is double rod cylinder assembly 20; The latter is outside the single-piston rod hydraulic cylinder assembly 36; All the other structures are identical; Mainly form by piston rod hydraulic cylinder assembly, bearing pin force cell 30, displacement transducer 25 with near switch 24; Described forward and backward double rod cylinder assembly assembly D, C are vertical with vertical single-piston rod hydraulic cylinder assembly assembly E and be arranged in parallel; The one of which end is connected with vertical outer side edges channel-section steel 13 screws of wheel gap frame assembled body A through oil cylinder tail earrings bearing 28, and vertically the end of single-piston rod hydraulic cylinder assembly assembly E is connected with limit channel-section steel 15 screws of wheel gap frame assembled body A, and the other end of three hydraulic cylinder assembly assemblies is connected with upper platen skeleton 18 with piston rod side's earrings through piston rod earrings bearing pin 35 respectively; Piston rod earrings bearing pin 35 overcoats piston rod earrings nylon jacket 21; The inside surface contact matching of the upper surface of piston rod earrings nylon jacket 21 and upper platen skeleton supporting square tube, piston rod earrings nylon cushion 34 also are enclosed within outside the piston rod earrings bearing pin 35, with the another one inside surface contact matching of supporting square tube.
Described bearing pin force cell 30 is connected fixing through the bearing pin force cell fixed head 29 that is stuck on its breach with oil cylinder tail earrings bearing 28 screws; And through oil cylinder tailstock earrings nylon jacket 26 and oil cylinder tailstock earrings nylon cushion 27 and 28 assemblings of oil cylinder tail earrings bearing, to reduce friction.
Described displacement transducer 25 1 ends are fixing through the displacement transducer u type folder 31 that cooperates with the back spreading flange screw of piston rod hydraulic cylinder assembly 20; The other end be connected through screw near the long bent plate of switch perception 33; Be connected with piston rod side's earrings screw of piston rod hydraulic cylinder assembly near the long bent plate 33 of switch perception; Be connected with the forward flange screw of piston rod hydraulic cylinder assembly with displacement meter fixed mount 23 near switch; Be welded near on switch and the displacement meter fixed mount 23 near switch sense plate guide plate 22, protection is near switch 24.
Described near switch 24 be connected with displacement meter fixed mount 23 screws near switch, its effect is that the control oil cylinder moves and stop.Recessed dog screw 32 be threaded with displacement meter fixed mount 23 near switch.
Described upper platen assembly F comprises upper platen 38 and upper platen diamond plate 37, and upper platen 38 and upper platen skeleton 18 are connected through screw, and upper platen diamond plate 37 is connected with upper platen 38 screws, and its effect is that increase rubs, prevents that wheel from sliding above that.
The present invention is directed to the problem that exists in original wheel gap detection device, mainly done following improvement:
1) with vertical and horizontal the linearity of totally three oil cylinders move and drive upper platen and move and rotate, thereby realize the wheel gap detection of Three Degree Of Freedom.
2) be connected with three oil cylinders with the upper platen skeleton, thereby realize only just doing three-degree-of-freedom motion with a platen, simple in structure.
3) with displacement transducer and force cell ergometry and displacement respectively,, thereby draw concrete wheel gap width according to the relationship of the two.And utilize the bearing pin force cell to do web member, make structure compact more.
4) replace track with steel ball, upper platen rolls on steel ball, makes friction littler, and structure is simpler.
Compared with present technology the present invention has following advantage:
1) this device can quantitatively be measured the automotive wheel gap length, can take appropriate measures according to gap length.
2) this device can be measured the wheel gap on three degree of freedom, and is more accurate.
3) this apparatus structure is simple, measures intelligence more.
Description of drawings
Whole spatial structure of Fig. 1 the present invention and user mode synoptic diagram.
The right table frame perspective view (1) of Fig. 2.
The right table frame perspective view (2) of Fig. 3 (hiding upper platen, side cover plate and skeleton).
The right table frame perspective view (3) of Fig. 4.(hiding side cover plate)
Fig. 5 wheel gap frame assembled body A perspective view (1).
Fig. 6 wheel gap frame assembled body A perspective view (Fig. 5 Rotate 180 ° also hiding side cover plate).
Fig. 7 upper platen skeleton assembly B perspective view.
Fig. 8 upper platen skeleton assembly B perspective view (upward view of Fig. 7).
Double rod cylinder assembly assembly C perspective view behind Fig. 9.
Double rod cylinder assembly assembly D perspective view before Figure 10.
The vertical single-piston rod hydraulic cylinder assembly of Figure 11 assembly E perspective view.
Figure 12 upper platen assembly F perspective view (1).
Figure 13 upper platen assembly F perspective view (2) (upward view of Figure 12).
Figure 14 oil cylinder kinematic relation figure.
The motion synoptic diagram of Figure 15 steel ball in steel ball lower support seat.
Among the figure: A. wheel gap frame assembled body, B. upper platen skeleton assembly, double rod cylinder assembly assembly before the double rod cylinder assembly assembly behind the C., D., the vertical single-piston rod hydraulic cylinder assembly of E. assembly, F. upper platen assembly;
1. longitudinal medial limit channel-section steel, 2. aviation fixed head seven apertures in the human head, 3. aviation plug assembly, 4. steel ball lower support disk, 5. steel ball; 6. steel ball lower support pad, 7. steel ball lower support seat, 8. frame anti-attrition nylon backing plate, 9. front channel-section steel, 10. side cover plate; 11. the sealing strip skeleton, 12. polyethylene sealing strips, 13. vertical outer side edges channel-section steels, 14. bottoms connect channel-section steel, 15. limit channel-section steels; The packaged part 16. bottom supporting channel-section steel, 17. inside and outside oil pipes are transferred, 18. upper platen skeletons, 19. upper slide steel ball supporting pads, 20. double rod cylinder assemblies; 21. piston rod earrings nylon jacket, 22. near switch sense plate guide plate, and 23. near switch and displacement meter fixed mount, and 24. near switch, 25. displacement transducers; 26. oil cylinder tailstock earrings nylon jacket, 27. oil cylinder tailstock earrings nylon cushions, 28. oil cylinder tail earrings bearings, 29. bearing pin force cell fixed heads, 30. bearing pin force cells; 31. displacement transducer u type folder, 32. recessed dog screws, 33. near the long bent plate of switch perception, 34. piston rod earrings nylon cushions; 35. piston rod earrings bearing pin, 36. single-piston rod hydraulic cylinder assemblies, 37. upper platen diamond plates, 38. upper platens.
Embodiment
Further specify particular content of the present invention and principle of work thereof according to the accompanying drawing illustrated embodiment below.
A kind of 3-freedom-degree wheel clearance detection platform of the present invention; Mainly be made up of the wheel clearance detection platform of left and right two symmetries, each monitor station comprises: wheel gap frame assembled body A, upper platen skeleton assembly B, back double rod cylinder assembly assembly C, back double rod cylinder assembly assembly D, vertical single-piston rod hydraulic cylinder assembly assembly E, upper platen assembly F.
It is on the ground that described wheel gap frame assembled body A is fixed in the second pouring cement of examining the car trench; The upper slide steel ball supporting pad 19 of described upper platen skeleton assembly B slides on the steel ball 5 of wheel gap frame assembled body A; The upper platen skeleton 18 of upper platen skeleton assembly B is connected with three hydraulic cylinder assemblies through piston rod earrings bearing pin 35, and drives moving and rotating of upper platen skeleton 18 by the telescopic moving of three oil cylinders; Back double rod cylinder assembly assembly C, preceding double rod cylinder assembly assembly D, vertical single-piston rod hydraulic cylinder assembly assembly E are connected with wheel gap frame assembled body A screw through oil cylinder tail earrings bearing 28; The upper platen 38 of upper platen assembly F is connected with upper platen skeleton 18 screws, and is moved and rotated by upper platen skeleton 18 drive upper platen assembly F.
Described wheel gap frame assembled body A comprises: vertically outer side edges channel-section steel 13, longitudinal medial limit channel-section steel 1, front channel-section steel 9, limit channel-section steel 15, bottom supporting channel-section steel 16, bottom connect channel-section steel 14, aviation fixed head seven apertures in the human head 2, aviation plug assembly 3, frame anti-attrition nylon backing plate 8, inside and outside oil pipe transfer packaged ligand 17, steel ball lower support disk 4, steel ball lower support seat 7, steel ball lower support pad 6, steel ball 5, sealing strip skeleton 11, polyethylene sealing strip 12 and side cover plate 10
Described vertical outer side edges channel-section steel 13, longitudinal medial limit channel-section steel 1, front channel-section steel 9, limit channel-section steel 15, bottom supporting channel-section steel 16 and bottom connect channel-section steel 14 and are welded; Aviation fixed head seven apertures in the human head 2 and longitudinal medial limit channel-section steel 1 are connected through screw; Aviation plug assembly 3 is connected with aviation fixed head seven apertures in the human head 2 screws, and frame anti-attrition nylon backing plate 8 is connected with longitudinal medial limit channel-section steel 1, front channel-section steel 9 and limit channel-section steel 15 screws, and the inside and outside oil pipe packaged ligand 17 of transferring is connected with longitudinal medial limit channel-section steel 1 screw; 4 steel ball lower support disks 4 are welded on the bottom supporting channel-section steel 16; Steel ball lower support seat 7 bottoms cut out ring-type to reduce contact area, combine closely with mating surface, and are connected through screw with steel ball lower support disk 4; Steel ball lower support pad 6 is placed on 7 li of steel ball lower support seats; Steel ball lower support pad 6 is supporting steel ball 5 again, and sealing strip skeleton 11 plays sealing function with polyethylene sealing strip 12, and side cover plate 10 is with vertically outer side edges channel-section steel 13, front channel-section steel 9, limit channel-section steel 15 screws are connected.
Described upper platen skeleton assembly B comprises: upper platen skeleton 18, upper slide steel ball supporting pad 19; Upper platen skeleton 18 is connected with upper slide steel ball supporting pad 19 screws; Upper slide steel ball supporting pad 19 slides on the steel ball 5 of wheel gap frame assembled body A; Upper platen skeleton 18 is connected with three hydraulic cylinder assemblies through piston rod earrings bearing pin 35, and drives moving and rotating of upper platen skeleton 18 by the telescopic moving of three oil cylinders.
Consult Figure 15; Though upper slide steel ball supporting pad 19 is to have only pad so big with the contact area of steel ball 5; But steel ball 5 steel ball lower support seat below can roll for 7 li, so mobile rotation is so little, a, b are two extreme positions of steel ball 5 among the figure; And walked 1 distance when steel ball 5 centers, tangent position has been walked 21 distances on the steel ball 5.
Described back double rod cylinder assembly assembly C comprises: double rod cylinder assembly 20; Oil cylinder tailstock earrings nylon jacket 26; Oil cylinder tailstock earrings nylon cushion 27; Bearing pin force cell 30; Displacement transducer u type folder 31; Displacement transducer 25; Near the long bent plate 33 of switch perception; Near switch and displacement meter fixed mount 23; Near switch sense plate guide plate 22; Near switch 24; Recessed dog screw 32; Piston rod earrings bearing pin 35; Piston rod earrings nylon jacket 21; Piston rod earrings nylon cushion 34; Oil cylinder tail earrings bearing 28 and bearing pin force cell fixed head 29.
Back double rod cylinder assembly assembly C is connected with wheel gap frame assembled body A screw through oil cylinder tail earrings bearing 28.
Three oil cylinder tail earrings bearings 28 are connected with vertical outer side edges channel-section steel 13, limit channel-section steel 15 screws respectively; Bearing pin force cell fixed head 29 is connected with oil cylinder tail earrings bearing 28 screws, and is stuck on the breach of bearing pin force cell 30 with fixed pin shaft force cell 30.
Oil cylinder tailstock earrings nylon jacket 26, oil cylinder tailstock earrings nylon cushion 27 cooperate with bearing pin force cell 30, reduce friction.
Be connected with piston rod side's earrings screw of double rod cylinder assembly 20 near the long bent plate 33 of switch perception, its effect is the position of perception near switch 24, the motion of decision piston rod with stop, thereby guarantee the longest stroke and the shortest route of oil cylinder.
Be connected with the forward flange screw of double rod cylinder assembly 20 with displacement meter fixed mount 23 near switch, be welded near on switch and the displacement meter fixed mount 23 near switch sense plate guide plate 22, protection is near switch 24.
Be connected with displacement meter fixed mount 23 screws near switch together near switch 24; Playing the control oil cylinder moves and the effect that stops; And guarantee no matter loosen any button on the hand held controller at any time, and all can make upper platen 38 get back to the centre position, avoid wheel to be not intended to damage by pressure upper platen 38.
Near recessed dog screw 32 arranged on switch and the displacement meter fixed mount 23, withstand displacement transducer 25, prevent displacement transducer 25 vibrations.
Piston rod earrings nylon jacket 21, piston rod earrings nylon cushion 34 cooperate with piston rod earrings bearing pin 35, reduce friction.
Piston rod earrings bearing pin 35 vertically is connected upper platen skeleton 18 with piston rod side's earrings, can drive upper platen skeleton 18 when then the oil cylinder linearity moves and move or rotate.
Each composition of double rod cylinder assembly assembly D is consistent with matching relationship and claim 4 before described.
Described vertical each composition of single-piston rod hydraulic cylinder assembly assembly E is consistent with matching relationship and claim 4.Just the double-piston hydraulic cylinder assembly changes single piston oil-cylinder assembly into.
Described upper platen assembly F comprises upper platen 38, upper platen diamond plate 37; Upper platen 38 and upper platen skeleton 18 are connected through screw, and upper platen diamond plate 37 is connected with upper platen 38 screws, and playing increases friction, anti-skidding effect; Prevent that wheel from sliding above that, influence is measured.
The motion of described back double rod cylinder assembly assembly C, preceding double rod cylinder assembly assembly D, vertical single-piston rod hydraulic cylinder assembly assembly E finally can drive upper platen diamond plate 37 and move and rotate around the z axle at x axle, y axle, is implemented on the three degree of freedom and moves; When two double rod cylinder assemblies are synchronized with the movement; Promptly two oil cylinders elongate or shorten simultaneously; Because piston rod earrings bearing pin is connected upper platen skeleton 18 with hydraulic cylinder assembly, then upper platen skeleton 18 moves in the x direction, moves in the x direction with upper platen diamond plate 37 thereby drive upper platen 38; When vertical single-piston rod moved, upper platen skeleton 18 moved in the y direction, moved in the y direction with upper platen diamond plate 37 thereby drive upper platen 38; When two asynchronous motions of double rod cylinder assembly; I.e. oil cylinder elongation; An oil cylinder shortens, and then upper platen backbone winding z axle rotates, and rotates with upper platen diamond plate 37 thereby drive upper platen 38; Thereby measure the gap of automotive wheel, realize the wheel gap detection of Three Degree Of Freedom in three directions.
When the oil cylinder of back double rod cylinder assembly assembly C and preceding double rod cylinder assembly assembly D stretched, vertically single-piston rod hydraulic cylinder assembly assembly E oil cylinder is just not simple rotated, and also plays compensating action.Control the stroke of vertical single-piston rod hydraulic cylinder assembly assembly E oil cylinder by Hydrauservo System, reach compensating action.Consult Figure 14; The flexible x of the oil cylinder of back double rod cylinder assembly assembly C and preceding double rod cylinder assembly assembly D; Set up the Equation f (x) of a vertical single-piston rod hydraulic cylinder assembly assembly E oil cylinder compensation stroke y about x, can realize the rectilinear motion along x, other in like manner.
Record power with bearing pin force cell 30, measure displacement with displacement transducer 31, the power-displacement diagram that draws is measured corresponding gap length according to figure.Among the present invention, bearing pin force cell 30 not only can dynamometry, can connect wheel gap framework and three oil cylinders simultaneously, reduces the space, makes simple in structure.
The principle of work of this monitor station is following: double rod cylinder assembly assembly, preceding double rod cylinder assembly assembly, vertical single-piston rod hydraulic cylinder assembly assembly provide hydraulic oil respectively to Hydraulic Station backward through petroleum pipeline; Use the stroke that limits oil cylinder near switch; Avoid the oil cylinder motion to surpass range own, make three hydraulic cylinder assemblies in range ability, freely stretch.Move thereupon or rotate with the upper platen skeleton that three oil cylinders are connected through bearing pin; Upper platen is connected with upper platen skeleton screw; So move or rotate thereupon; The upper platen diamond plate that drives simultaneously screw connection with it again moves or rotates, and wheel contacts with the upper platen diamond plate, so wheel can be done the motion of Three Degree Of Freedom.Force cell and displacement transducer synchronous recording power and displacement can quantitatively be obtained the wheel gap length according to force-displacement curve.
Claims (8)
1. 3-freedom-degree wheel clearance detection platform; Mainly form by wheel gap frame assembled body (A), upper platen skeleton assembly (B), back double rod cylinder assembly assembly (C), preceding double rod cylinder assembly assembly (D), vertical single-piston rod hydraulic cylinder assembly assembly (E) and upper platen assembly (F); It is characterized in that; It is on the ground that described wheel gap frame assembled body (A) is fixed in the second pouring cement of examining the car trench; The steel ball (5) of upper slide steel ball supporting pad (19) frame assembled body (A) in the wheel gap of described upper platen skeleton assembly (B) is gone up and is slided; The upper platen skeleton (18) of upper platen skeleton assembly (B) is connected with vertical single-piston rod hydraulic cylinder assembly assembly (E) with forward and backward double rod cylinder assembly assembly (D, C) through piston rod earrings bearing pin (35); And drive moving and rotating of upper platen skeleton (18) by the telescopic moving of above-mentioned three piston rod hydraulic cylinder assembly assembly oil cylinders; Back double rod cylinder assembly assembly (C), preceding double rod cylinder assembly assembly (D), vertical single-piston rod hydraulic cylinder assembly assembly (E) are connected with wheel gap frame assembled body (A) screw through oil cylinder tail earrings bearing (28); The upper platen (38) of upper platen assembly (F) is connected with upper platen skeleton (18) screw, and drives the mobile and rotation of upper platen assembly (F) by upper platen skeleton (18).
2. a kind of 3-freedom-degree wheel clearance detection platform according to claim 1; It is characterized in that; Described wheel gap frame assembled body (A) mainly is made up of transfer packaged part (17), steel ball assembly and seal of framework, aviation plug assembly (3), inside and outside oil pipe; Described framework is connected channel-section steel (14) by vertical outer side edges channel-section steel (13), front channel-section steel (9), limit channel-section steel (15), longitudinal medial limit channel-section steel (1), bottom supporting channel-section steel (16) and is welded with the bottom; Described aviation plug assembly (3) is connected on the longitudinal medial limit channel-section steel (1) through aviation fixed head seven apertures in the human head (2) screw; The upper edge of framework connects through screw is equipped with side cover plate (10) and frame anti-attrition nylon backing plate (8), and the inside and outside oil pipe packaged part (17) of transferring is connected an end of longitudinal medial limit channel-section steel (1) through screw, and the steel ball (5) in the described steel ball assembly is by steel ball lower support pad (6) support that is placed on steel ball lower support seat (7) lining; Steel ball lower support seat (7) is connected on the steel ball lower support disk (4) through screw; 4 steel ball lower support disks (4) are welded on the bottom supporting channel-section steel (16), steel ball lower support seat (7) bottom be ring-type with the minimizing contact area, combine closely with mating surface; Sealing strip skeleton (11) is welded on each channel-section steel limit, and polyethylene sealing strip (12) is bonded on the sealing strip skeleton (11).
3. a kind of 3-freedom-degree wheel clearance detection platform according to claim 1; It is characterized in that; Described upper platen skeleton assembly (B) comprises upper platen skeleton (18) and upper slide steel ball supporting pad (19); Upper platen skeleton (18) is connected with upper slide steel ball supporting pad (19) screw; Upper slide steel ball supporting pad (19) is slidingly matched with the steel ball (5) of wheel gap frame assembled body (A); Upper platen skeleton (18) is connected with vertical single-piston rod hydraulic cylinder assembly assembly (E) with forward and backward double rod cylinder assembly assembly (D, C) through piston rod earrings bearing pin (35), and upper platen skeleton (18) drives mobile and rotation by the telescopic moving of above-mentioned three piston rod hydraulic cylinder assembly assembly oil cylinders.
4. according to claim 1 or 3 described a kind of 3-freedom-degree wheel clearance detection platforms; It is characterized in that; Described forward and backward double rod cylinder assembly assembly (D, C) and vertical single-piston rod hydraulic cylinder assembly assembly (E); Removing the above two is double rod cylinder assembly (20), and the latter is that all the other structures are identical outside the single-piston rod hydraulic cylinder assembly (36); Mainly form by bearing pin force cell (30), displacement transducer (25) with near switch (24); Described forward and backward double rod cylinder assembly assembly (D, C) is parallel, and with the vertical layout of vertical single-piston rod hydraulic cylinder assembly assembly (E), the one of which end is connected with vertical outer side edges channel-section steel (13) screw of wheel gap frame assembled body (A) through oil cylinder tail earrings bearing (28); Vertically an end of single-piston rod hydraulic cylinder assembly assembly (E) is connected with limit channel-section steel (15) screw of wheel gap frame assembled body (A); The other end of three piston rod hydraulic cylinder assembly assemblies is connected with upper platen skeleton (18) with piston rod side's earrings through piston rod earrings bearing pin (35) respectively, and piston rod earrings bearing pin (35) overcoat piston rod earrings nylon jacket (21), the inside surface contact matching of the upper surface of piston rod earrings nylon jacket (21) and upper platen skeleton supporting square tube; Piston rod earrings nylon cushion (34) also is enclosed within outside the piston rod earrings bearing pin (35), with the another one inside surface contact matching of supporting square tube.
5. a kind of 3-freedom-degree wheel clearance detection platform according to claim 4; It is characterized in that; Described bearing pin force cell (30) is connected fixing through the bearing pin force cell fixed head (29) that is stuck on its breach with oil cylinder tail earrings bearing (28) screw; And through oil cylinder tailstock earrings nylon jacket (26) and oil cylinder tailstock earrings nylon cushion (27) and oil cylinder tail earrings bearing (28) assembling, to reduce friction.
6. a kind of 3-freedom-degree wheel clearance detection platform according to claim 4; It is characterized in that; Described displacement transducer (25) one ends are fixing through the displacement transducer u type folder (31) that cooperates with back spreading flange screw; The other end be connected through screw near the long bent plate of switch perception (33), be connected with piston rod side's earrings screw near the long bent plate of switch perception (33), be connected with the forward flange screw near the fixed mount (23) of switch and displacement meter; Be welded on the fixed mount (23) near switch and displacement meter near switch sense plate guide plate (22), protection is near switch (24).
7. a kind of 3-freedom-degree wheel clearance detection platform according to claim 4; It is characterized in that; Describedly be connected with fixed mount (23) screw near switch and displacement meter near switch (24); Its effect is that the control oil cylinder moves and stop, and recessed dog screw (32) is threaded with fixed mount (23) near switch and displacement meter.
8. a kind of 3-freedom-degree wheel clearance detection platform according to claim 1; It is characterized in that; Described upper platen assembly (F) comprises upper platen (38) and upper platen diamond plate (37); Upper platen (38) is connected through screw with upper platen skeleton (18), and upper platen diamond plate (37) is connected with upper platen (38) screw, and its effect is the increase friction, prevents that wheel from sliding above that.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102533695A CN101929854B (en) | 2010-08-15 | 2010-08-15 | 3-freedom-degree wheel clearance detection platform |
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| CN2010102533695A CN101929854B (en) | 2010-08-15 | 2010-08-15 | 3-freedom-degree wheel clearance detection platform |
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| CN101929854B true CN101929854B (en) | 2012-08-08 |
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|---|---|---|---|---|
| CN102288418B (en) * | 2011-07-15 | 2013-05-01 | 吉林大学 | Electric system for three-degree-of-freedom wheel gap detecting platform |
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