CN202631266U - Tractor hydraulic lifting test bench - Google Patents
Tractor hydraulic lifting test bench Download PDFInfo
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- CN202631266U CN202631266U CN 201220228739 CN201220228739U CN202631266U CN 202631266 U CN202631266 U CN 202631266U CN 201220228739 CN201220228739 CN 201220228739 CN 201220228739 U CN201220228739 U CN 201220228739U CN 202631266 U CN202631266 U CN 202631266U
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Abstract
Disclosed is a tractor hydraulic lifting test bench which comprises a lifting standard framework, the lifting standard framework is connected with a suspension device of a tractor to be tested and a loading device, and the loading device is connected with a hydraulic station. The tractor hydraulic lifting test bench disclosed by the utility model is capable of making a loading oil cylinder always perpendicular to the ground in the lifting process, ensuring that the loading force is consistent with the gravity of the simulated farm tool in direction in the lifting process and eliminating loading errors; there is no need to prepare a plurality of sets of lifting frameworks when different suspension devices are tested so that the test cost can be saved; and the oil cylinder can be ensured not to move when the maximum lifting capacity is tested, thus achieving the working condition for measurement.
Description
Technical field
The utility model relates to a kind of agricultural machinery hydraulic test device, exactly is a kind of tractor hydraulic lifting test platform.
Background technology
The test of tractor hydraulic load-carrying capacity is the important test event of tractor performance.There is following shortcoming in present cylinder loading test: 1, during the course, oil cylinder can not keep perpendicular to the ground at any time, influences the accuracy of measurement result; 2, the counterweight that the suspender of each type is corresponding is different, need cooperate with the lift frame of different size, causes the lift frame kind many, causes easily in using and obscures, and classification and storage process are inconvenient; 3, when measuring maximum pulling capacity, oil cylinder is elongated to and occurs oil cylinder easily behind the assigned position and move, and can't satisfy the operating mode of measurement, and when carrying out quiet settling test, it is slower to regulate in the press process device response speed, and degree of regulation is low, and measurement result is inaccurate.
The utility model content
The utility model provides a kind of tractor hydraulic lifting test platform, can effectively address the above problem.
The utility model is for realizing above-mentioned purpose; Realize through following technical scheme: tractor hydraulic lifting test platform, comprise the lifting standard card cage, promote standard card cage and connect by the suspender of examination tractor; Promote standard card cage and connect charger, charger connects Hydraulic Station.
In order further to realize the purpose of the utility model, can also adopt following technical scheme: described charger is a hydraulic loading device.Described charger is the counterweight charger.Described charger is connected computer control with Hydraulic Station.Described hydraulic loading device comprises base, and first side plate and second side plate are installed on the base, and first upper rail and first lower guideway are installed on first side plate; Second upper rail and second lower guideway are installed on second side plate, first road wheel is installed between first upper rail and first lower guideway, second road wheel is installed between second upper rail and second lower guideway; First road wheel all is connected with dolly with second road wheel, and slot is offered in the dolly bottom surface, and inserted sheet is installed in the slot; Inserted sheet is connected with screw, and screw is installed on the leading screw, and leading screw is installed on the base; Leading screw one end is connected with the output shaft of servomotor, and even hinge block is installed at the dolly top, and even hinge block and load cylinder are hinged; Load cylinder top mounted angle sensor, obliquity sensor all is connected with controller through lead with servomotor; Between first side plate and second side plate, one end baffle plate is installed, the stay-supported displacement transducer is installed on the baffle plate, the cable end of stay-supported displacement transducer is connected with dolly; Handwheel is installed in the leading screw end.Described counterweight charger comprises sedimentation trolley track and counterweight lift frame dolly; The lift frame dolly matches with the sedimentation trolley track; Pallet fork and quiet heavy oil cylinder are set on the lift frame dolly, the vertical placement of quiet heavy oil cylinder, quiet heavy oil cylinder connects the lift frame dolly; Quiet heavy oil cylinder bottom is provided with cylinder support, is connected with split pin through bearing pin between quiet heavy oil cylinder and the cylinder support.Promote standard card cage and comprise cross bar, column and vertical pole, vertical each other between cross bar, column and the vertical pole, an end of cross bar is connected with the mid point of vertical pole, and the bottom of column is connected with the mid point of vertical pole, and the middle part of cross bar is provided with bearing pin, and the other end of cross bar is installed balancing weight; Several pin-and-holes of vertical arrangement are offered in described column upper end, and pin-and-hole is in column both sides and penetrating; Described vertical pole two ends are provided with ring flange; Described balancing weight is made up of several steel discs, and steel disc evenly is installed in the both sides of cross bar, is connected through bolt between steel disc and the cross bar; Through hole is offered at steel disc top and the middle part stated respectively, passes bolt in the through hole of each steel disc; First inclined support bar is installed between cross bar and the vertical pole, second inclined support bar is installed between column and the vertical pole, the 3rd inclined support bar is installed between cross bar and the column; Described ring flange is the octal ring flange, and the groove with the concentric cylindricality of ring flange is offered in the ring flange side.Described charger comprises oil cylinder; In the described Hydraulic Station hydraulic loading device is set; Hydraulic loading device comprises fuel tank, is connected with scavenge pipe through flowline between the oil cylinder of fuel tank and charger, and flowline and scavenge pipe are pipeline; The one or six energising magnetic reversal valve is set between the oil cylinder of fuel tank and charger, between the oil cylinder of charger and the one or the six energising magnetic reversal valve hydraulic lock is set; Between the oil cylinder of charger and the solenoid directional control valve ratio adjusting valve is set, PMU is set on the pipeline; Two bypasses are set between the oil cylinder of described fuel tank and charger, a four-way change-over valve is installed in each bypass, parallelly connected between four-way change-over valve and first six-way transfer valve, between the oil pocket of main oil pocket solenoid valve is set; On the flowline of described fuel tank and the scavenge pipe branch road is set, branch road connects the oil cylinder of charger, and second six-way transfer valve is set between the oil cylinder of fuel tank and charger; Between the flowline of described fuel tank and the return line electromagnetic relief valve is set; Liquid level gauge, air cleaner and/or liquid level relay are set on the described fuel tank; On the described pipeline temperature inductor is set; Described PMU is the pressure inductor or first shock-proof pressure gauge; Described pressure inductor connects second shock-proof pressure gauge, between the pressure inductor and second shock-proof pressure gauge pressure meter switch is set; Ram pump and retaining valve are set on the flowline of described fuel tank, and ram pump connects motor.
The advantage of the utility model is: it is perpendicular to the ground that load cylinder is remained in lifting process; Guarantee that loading force is consistent with the farm implements gravity direction of being simulated in the lifting process; Eliminate loading error, during load cylinder work leading screw is not had pressure, increase the accuracy of measurement result; Different according to suspender to be tested, selects different balancing weights, can accomplish the test of four types of suspenders, when testing different suspender, need not to prepare many cover lift frames, the saving testing cost is avoided the confusion of wrong supporting generation, convenient for storing; Can prevent effectively that through hydraulic lock the hydraulic oil in the oil cylinder from refluxing, guarantee that oil cylinder does not move when measuring maximum pulling capacity, thereby reach the operating mode of measurement.The utility model also has compactness simple for structure, advantage cheap for manufacturing cost and easy to use.
Description of drawings
Fig. 1 is the structural representation of the utility model; Fig. 2 is the main TV structure synoptic diagram that promotes standard card cage 2 among Fig. 1; Fig. 3 is the left TV structure synoptic diagram of Fig. 2; Fig. 4 is the plan structure synoptic diagram of Fig. 2; Fig. 5 is the local structure for amplifying synoptic diagram of the I of Fig. 3; Fig. 6 is the main TV structure synoptic diagram of hydraulic loading device 4 among Fig. 1; Fig. 7 is the sectional structure synoptic diagram along Fig. 6 A-A line; Fig. 8 is the local structure for amplifying synoptic diagram of the II of Fig. 6; Fig. 9 is the structural representation of counterweight charger 5 among Fig. 1; Figure 10 is the oil circuit synoptic diagram of hydraulic loading device.
Embodiment
Tractor hydraulic lifting test platform, as shown in Figure 1, comprise promoting standard card cage 2, promote standard card cage 2 and connect by the suspender of examination tractor 1, promote standard card cage 2 and connect charger, charger connects Hydraulic Station 7.
Described charger is a hydraulic loading device 4, and like Fig. 6, Fig. 7 and shown in Figure 8, hydraulic loading device 4 comprises base 4-1; Base 4-1 goes up the first side plate 4-2 and the second side plate 4-3 is installed, and the first side plate 4-2 goes up the first upper rail 4-4 and the first lower guideway 4-5 are installed, and the second side plate 4-3 goes up the second upper rail 4-6 and the second lower guideway 4-7 are installed; The first road wheel 4-8 is installed between the first upper rail 4-4 and the first lower guideway 4-5, the second road wheel 4-9 is installed between the second upper rail 4-6 and the second lower guideway 4-7, the first road wheel 4-8 all is connected with dolly 4-10 with the second road wheel 4-9; Dolly 4-10 offers slot 4-11 in the bottom surface; Inserted sheet 4-12 is installed in the slot 4-11, and inserted sheet 4-12 is connected with screw 4-13, and screw 4-13 is installed on the leading screw 4-14; Leading screw 4-14 is installed on the base 4-1; Leading screw 4-14 one end is connected with the output shaft of servomotor 4-15, and even hinge block 4-16 is installed at dolly 4-10 top, and even hinge block 4-16 and load cylinder 4-17 are hinged; Load cylinder 4-17 top mounted angle sensor 4-18, obliquity sensor 4-18 all is connected with controller 4-19 through lead with servomotor 4-15.During test; Obliquity sensor 4-18 monitors the angle of inclination of load cylinder 4-17 in real time; When the range of tolerable variance of the angle of inclination of load cylinder 4-17 overshoot; Controller 4-19 sends pulse signal according to the actual angle of inclination of load cylinder 4-17 to servomotor 4-15; Make servomotor 4-15 drive dolly 4-10 and move, the angle of load cylinder 4-17 is regulated, in the angle of inclination with load cylinder 4-17 is adjusted to the range of tolerable variance of regulation along guide rail through leading screw 4-14, screw 4-13 and inserted sheet 4-12.Be connected with slot 4-11 through inserted sheet 4-12 between screw 4-13 and the dolly 4-10; Can between dolly 4-10 and screw 4-13, reserve suitable degree of freedom; When eliminating load cylinder 4-17 work to the pressure of screw 4-13 and leading screw 4-14; Prevent leading screw 4-14 compressive deformation, help prolonging the serviceable life of the utility model.In order to monitor the displacement data of load cylinder 4-17 in real time; Baffle plate 4-20 can be installed between the first side plate 4-2 and the second side plate 4-3, one end; Baffle plate 4-20 goes up stay-supported displacement transducer 4-21 is installed, and the cable end of stay-supported displacement transducer 4-21 is connected with dolly 4-10.Along with moving of dolly 4-10, stay-supported displacement transducer 4-21 can be transferred to the displacement data of load cylinder 4-17 controller 4-19, is convenient to controller 4-19 and according to the displacement data of load cylinder 4-17 the position of dolly 4-10 is adjusted.Said controller 4-19 also has automatically, the manual state handoff functionality, and during auto state, controller 4-19 sends pulse signal according to the actual angle of inclination of load cylinder 4-17 from trend servomotor 4-15, and the angle of load cylinder 4-17 is regulated; During manual state, controller 4-19 adjusts the angle of load cylinder 4-17 no longer automatically, but by angle of inclination and the direction of operator's real-time monitored load cylinder 4-17, manual rotating threaded shaft 4-14, up to load cylinder 4-17 perpendicular to ground.For ease of the manual rotating threaded shaft 4-14 of operator, handwheel 4-22 can be installed in leading screw 4-14 end.
Described charger is a counterweight charger 5; As shown in Figure 9; Counterweight charger 5 comprises sedimentation trolley track 5-5 and counterweight lift frame dolly 5-2, and lift frame dolly 5-2 matches with sedimentation trolley track 5-5, and pallet fork 5-4 and quiet heavy oil cylinder 5-3 are set on the lift frame dolly 5-2; The vertical placement of quiet heavy oil cylinder 5-3; Quiet heavy oil cylinder 5-3 connects lift frame dolly 5-2, and quiet heavy oil cylinder 5-3 bottom is provided with cylinder support 5-7, is connected with split pin 5-6 through bearing pin 5-5 between quiet heavy oil cylinder 5-3 and the cylinder support 5-7.Sedimentation trolley track 5-5 is fixed on the wall, and cylinder support 5-7 fixes on the ground, increases counterweight through going up to cylinder support 5-7, carries out the quiet heavy test to quiet heavy oil cylinder 5-3.
Promote standard card cage 2; To shown in Figure 5, comprise cross bar 2-9, column 2-1 and vertical pole 2-10 like Fig. 2, vertical each other between cross bar 2-9, column 2-1 and the vertical pole 2-10; The end of cross bar 2-9 is connected with the mid point of vertical pole 2-10; The bottom of column 2-1 is connected with the mid point of vertical pole 2-10, and the middle part of cross bar 2-9 is provided with bearing pin 2-4, and the other end of cross bar 2-9 is installed balancing weight 2-5.Described balancing weight 2-5 is made up of several steel discs, and steel disc evenly is installed in the both sides of cross bar 2-9, is connected through bolt between steel disc and the cross bar 2-9, and each steel disc is the steel plate of 40kg.Through hole is offered at described steel disc top and middle part respectively, passes bolt in the through hole of each steel disc, and steel disc range of lift in cargo handling process is little, and the center is low, the back is installed stablizes, and reaches the steel disc minimum number that same counterweight effect is used.According to suspender difference to be tested, select the steel disc of different quantity, guarantee center of gravity 610mm place behind hitch point; Can accomplish the test of four types of suspenders; When testing different suspender, need not to prepare many cover lift frames, save testing cost; Avoid the confusion of wrong supporting generation, convenient for storing.For the ease of the height of adjustment column 2-1 apart from ground, arrived the purpose of the different suspenders of test, described column 2-1 offers several pin-and-holes 2-7 of vertical arrangement in the upper end, and pin-and-hole 2-7 is in column 2-1 both sides and penetrating.Cooperate the distance on adjustment column 2-1 and ground with the pin-and-hole 2-7 of differing heights through tractor.Be connected with the linking arm 2-3 of tractor for ease, described vertical pole 2-10 two ends are provided with ring flange 2-2.Described ring flange 2-2 is the octal ring flange, and ring flange 2-2 offers the side groove 2-13 with the concentric cylindricality of ring flange 2-2, and the diameter of groove 2-13 is identical with the diameter of tractor linking arm 2-3.Linking arm 2-3 is installed in the groove 2-13, cooperates through the ring flange on ring flange 2-2 and the linking arm 2-3, and the linking arm 2-3 that can guarantee both sides is on same straight line.In order to increase the stability that promotes standard card cage 2; Two first inclined support bar 2-6 are installed between cross bar 2-9 and the vertical pole 2-10; Two second inclined support bar 2-11 are installed between column 2-1 and the vertical pole 2-10, the 3rd inclined support bar 2-8 is installed between cross bar 2-9 and the column 2-1.Two first inclined support bar 2-6 claim that with cross bar 2-9 and facing of column 2-1 place each two first inclined support bar 2-6, cross bar 2-9 and vertical pole 2-10 form stable triangle.Two second inclined support bar 2-11 claim that with cross bar 2-9 and facing of column 2-1 place each second inclined support bar 2-11, column 2-1 and vertical pole 2-10 form stable triangle.The 3rd inclined support bar 2-8, cross bar 2-9 and column 2-1 form stable triangle.
In the described Hydraulic Station 7 hydraulic loading device is set; Shown in figure 10; Comprise fuel tank 7-1, be connected with scavenge pipe through flowline between fuel tank 7-1 and the load cylinder 4-17 that flowline and scavenge pipe are pipeline; The one or six energising magnetic reversal valve 7-13 is set between fuel tank 7-1 and the load cylinder 4-17, between load cylinder 4-17 and the one or the six energising magnetic reversal valve 7-13 hydraulic lock 7-16 is set.The hydraulic pressure lift test is accomplished in cooperation during through the one or six energising magnetic reversal valve 7-13 and load cylinder 4-17 work.When measuring maximum pulling capacity, in the lifting process of tractor, load cylinder 4-17 can not extend, the concrete realization as follows: when the fuel feeding of the left chamber of load cylinder 4-17, can open the retaining valve in right chamber, otherwise can open the retaining valve in left chamber during the fuel feeding of right chamber; If two chambeies are fuel feeding the time, about two chambeies all seal into the retaining valve state; If about two chambeies all have pressure oil to provide, about two chambeies can open and no longer include single effect simultaneously.During operate as normal, oil cylinder rises, and opens the retaining valve in right chamber, and oil cylinder rises; When oil cylinder descends, open the retaining valve in left chamber, oil cylinder descends; When about two chambeies not during fuel feeding, about two chambeies all seal into the retaining valve state, transfixion falls in oil cylinder, does not have any elongation, satisfies the operating mode of testing requirements.Between described load cylinder 4-17 and the solenoid directional control valve 7-13 ratio adjusting valve 7-15 is set, PMU is set on the pipeline.Ratio adjusting valve 7-15 adopts electric feedback, and when signal was imported, main valve plug drove the displacement transducer motion that is attached thereto, when the displacement signal of feedback equates with given signal, and the main valve plug stop motion, proportioning valve reaches a new equilibrium position.Ratio adjusting valve 7-15 can setting device pressure, realizes accomplishing with load cylinder 4-17 the quiet settling test of tractor.After accomplishing the feed pull maximum test, when doing quiet settling test, first handle assembly pressure setting is to minimum, and slow charger pressure is through observing PMU, up to the feed pull maximum that reaches tractor.Quiet heavy practice test adopts proportional control valve to come setting device pressure, and the device response is rapid, and degree of regulation is high, satisfies the requirement of test fully.Two bypasses are set between described fuel tank 7-1 and the load cylinder 4-17, a four-way change-over valve 7-12 is installed in each bypass, parallelly connected between four-way change-over valve 7-12 and the first six-way transfer valve 7-13, solenoid valve 7-24 is set between the oil pocket of main oil pocket 7-17.When carrying out experimental tests in six fens; When last experimental tests finishes to carry out next experimental tests, open solenoid valve 7-24, when tested oil cylinder rises; The distance that tested oil cylinder upper oil cavitie reduces is identical with the distance that the oil cylinder lower oil cavitie increases; But upper oil cavitie has piston rod, so same only need consume the needs that a spot of oil just can replenish upper oil cavitie apart from lower oil cavitie, has solved the tractor problem that the oil cylinder ascending velocity does not catch up with in the process that promotes.On the flowline of described fuel tank 7-1 and the scavenge pipe branch road is set, branch road connects quiet heavy oil cylinder 5-3, between fuel tank 7-1 and the quiet heavy oil cylinder 5-3 the second six-way transfer valve 7-23 is set.The topworks that quiet heavy oil cylinder 5-3 is the counterweight elevating mechanism can regulate the position of counterweight in vertical direction, so that be connected with lift frame.Electromagnetic relief valve 7-10 is set between the flowline of described fuel tank 1 and the return line.Electromagnetic relief valve 7-10 can protect whole hydraulic means, and when device pressure during greater than the set pressure of electromagnetic relief valve 7-10, electromagnetic relief valve 7-10 is with automatic deloading; Through the set pressure of adjustment electromagnetic relief valve 7-10, can realize the continuous variation of loaded load simultaneously, realize electrodeless loading.Liquid level gauge 7-2, air cleaner 7-4 and liquid level relay 7-6 are set on the described fuel tank 7-1.The liquid level of hydraulic oil among the liquid level gauge 7-2 real-time monitored fuel tank 7-1, the fluid liquid level is crossed when hanging down among the fuel tank 7-1, and the protection test device quits work; Air cleaner 7-4 can prevent that dust in air from getting into fuel tank; When liquid level is lower than assigned position, liquid level relay will send a normally closed signal, notify the staff to stop whole device work.Temperature inductor 7-19 is set, temperature that can real-time monitoring device hydraulic oil on the described pipeline.Described PMU is the pressure inductor 7-20 or the first shock-proof pressure gauge 7-11, through gauge outfit, and the pressure of real-time monitoring device.Described pressure inductor 7-20 connects the second shock-proof pressure gauge 7-22, between the pressure inductor 7-20 and the second shock-proof pressure gauge 7-22 pressure meter switch 7-21 is set.Realize the work of the second shock-proof pressure gauge 7-22 through opening and closing pressure meter switch.Ram pump 7-7 and retaining valve 7-9 are set on the flowline of described fuel tank 7-1, and ram pump 7-7 connects motor 7-8.Ram pump 7-7 be rely on plunger in its cylinder body during to-and-fro movement the volume-variation in seal operation chamber realize oil suction and press oil.Because plunger and cylinder inner bore are periphery, obtain high-precision cooperation easily, so the characteristics of this type pump are that leakage is little, volumetric efficiency is high, can under high pressure work.Retaining valve 7-9 guarantees that ram pump 7-7 gets after the oil by prescribed direction, and hydraulic oil can only uniflux, protects whole device.Oil suction oil filter 7-5 and oil return oil filter 7-3 are installed respectively on the flowline of fuel tank 7-1 and the scavenge pipe.Oil suction oil filter 7-5 and oil return oil filter 7-3 filter installing oil return, remove and sneak into the impurity in the hydraulic oil, prevent to damage hydraulic part.Stack one-way throttle valve 7-14 is installed on the pipeline of four-way change-over valve 7-12, and stack one-way throttle valve 7-14 guarantees that hydraulic pressure can carry out throttling by specified flow when walking.
Described charger is connected computer control 6 with Hydraulic Station.The utility model is based on the tractor hydraulic lifting test data processing software of OPC technology in the computer control 6; Realize that transmission speed is fast, transmission of signal-type and quantity is many, transmission precision is high, long transmission distance, transmission are reliable, advantages such as maintenance are convenient in system.Adopt VB exploitation OPC client in the computer control 6, direct and PLC communication, on-the-spot circuit obtains simplifying, and all operations can be accomplished on microcomputer, and is easy and simple to handle, reliable, is easy to debugging.The unified data acquisition system (DAS) of forming by the AD module that inserts of each sensor; Collect on the host computer through the OPC technology by VB exploitation OPC client again; Whole process transmission speed is fast; Data transmission is stable, reliable, and measured parameter is accomplished gathering of test figure and writing of test report automatically through computer acquisition, processing, record.Computer control 6 has also improved the automaticity of test macro, can reduce labor intensity of operating personnel.
The technical scheme of the utility model is not restricted in the scope of the described embodiment of the utility model.The utility model not technology contents of detailed description is known technology.
Claims (8)
1. tractor hydraulic lifting test platform is characterized in that: comprise promoting standard card cage (2), promote standard card cage (2) and connect by the suspender of examination tractor that promote standard card cage (2) and connect charger, charger connects Hydraulic Station (7).
2. tractor hydraulic lifting test platform according to claim 1 is characterized in that: described charger is hydraulic loading device (4).
3. tractor hydraulic lifting test platform according to claim 1 is characterized in that: described charger is counterweight charger (5).
4. tractor hydraulic lifting test platform according to claim 1 is characterized in that: described charger is connected computer control (6) with Hydraulic Station.
5. tractor hydraulic lifting test platform according to claim 2; It is characterized in that: described hydraulic loading device (4) comprises base (4-1); Base (4-1) is gone up first side plate (4-2) and second side plate (4-3) is installed; First side plate (4-2) is gone up first upper rail (4-4) and first lower guideway (4-5) is installed, and second side plate (4-3) is gone up second upper rail (4-6) and second lower guideway (4-7) are installed, and first road wheel (4-8) is installed between first upper rail (4-4) and first lower guideway (4-5); Second road wheel (4-9) is installed between second upper rail (4-6) and second lower guideway (4-7); First road wheel (4-8) all is connected with dolly (4-10) with second road wheel (4-9), and slot (4-11) is offered in dolly (4-10) bottom surface, and inserted sheet (4-12) is installed in the slot (4-11); Inserted sheet (4-12) is connected with screw (4-13); Screw (4-13) is installed on the leading screw (4-14), and leading screw (4-14) is installed on the base (4-1), and leading screw (4-14) end is connected with the output shaft of servomotor (4-15); Even hinge block (4-16) is installed at dolly (4-10) top; Even hinge block (4-16) is hinged with load cylinder (4-17), load cylinder (4-17) top mounted angle sensor (4-18), and obliquity sensor (4-18) all is connected with controller (4-19) through lead with servomotor (4-15); Between first side plate (4-2) and second side plate (4-3) end baffle plate (4-20) is installed, baffle plate (4-20) is gone up stay-supported displacement transducer (4-21) is installed, and the cable end of stay-supported displacement transducer (4-21) is connected with dolly (4-10); Handwheel (4-22) is installed in leading screw (4-14) end.
6. tractor hydraulic lifting test platform according to claim 3; It is characterized in that: described counterweight charger (5) comprises sedimentation trolley track (5-5) and counterweight lift frame dolly (5-2); Lift frame dolly (5-2) matches with sedimentation trolley track (5-5); Pallet fork (5-4) and quiet heavy oil cylinder (5-3) are set on the lift frame dolly (5-2); The vertical placement of quiet heavy oil cylinder (5-3); Quiet heavy oil cylinder (5-3) connects lift frame dolly (5-2), and quiet heavy oil cylinder (5-3) bottom is provided with cylinder support (5-7), is connected with split pin (5-6) through bearing pin (5-5) between quiet heavy oil cylinder (5-3) and the cylinder support (5-7).
7. tractor hydraulic lifting test platform according to claim 1; It is characterized in that: promote standard card cage (2) and comprise cross bar (2-9), column (2-1) and vertical pole (2-10); Vertical each other between cross bar (2-9), column (2-1) and the vertical pole (2-10); One end of cross bar (2-9) is connected with the mid point of vertical pole (2-10); The bottom of column (2-1) is connected with the mid point of vertical pole (2-10), and the middle part of cross bar (2-9) is provided with bearing pin (2-4), and the other end of cross bar (2-9) is installed balancing weight (2-5); Several pin-and-holes (2-7) of vertical arrangement are offered in described column (2-1) upper end, and pin-and-hole (2-7) is in column (2-1) both sides and penetrating; Described vertical pole (2-10) two ends are provided with ring flange (2-2); Described balancing weight (2-5) is made up of several steel discs, and steel disc evenly is installed in the both sides of cross bar (2-9), is connected through bolt between steel disc and the cross bar (2-9); Through hole is offered at steel disc top and the middle part stated respectively, passes bolt in the through hole of each steel disc; First inclined support bar (2-6) is installed between cross bar (2-9) and the vertical pole (2-10); Second inclined support bar (2-11) is installed between column (2-1) and the vertical pole (2-10), the 3rd inclined support bar (2-8) is installed between cross bar (2-9) and the column (2-1); Described ring flange (2-2) is the octal ring flange, and the groove (2-13) with the concentric cylindricality of ring flange (2-2) is offered in ring flange (2-2) side.
8. tractor hydraulic lifting test platform according to claim 1; It is characterized in that: described charger comprises oil cylinder; Described Hydraulic Station is provided with hydraulic loading device in (7); Hydraulic loading device comprises fuel tank (7-1), is connected with scavenge pipe through flowline between the oil cylinder of fuel tank (7-1) and charger, and flowline and scavenge pipe are pipeline; The one or six energising magnetic reversal valve (7-13) is set between the oil cylinder of fuel tank (7-1) and charger, between the oil cylinder of charger and the one or the six energising magnetic reversal valve (7-13) hydraulic lock (7-16) is set; Ratio adjusting valve (7-15) is set between the oil cylinder of charger and the solenoid directional control valve (7-13), PMU is set on the pipeline; Two bypasses are set between the oil cylinder of described fuel tank (7-1) and charger; A four-way change-over valve (7-12) is installed in each bypass; Parallelly connected between four-way change-over valve (7-12) and first six-way transfer valve (7-13), solenoid valve (7-24) is set between the oil pocket of main oil pocket (7-17); On the flowline of described fuel tank (7-1) and the scavenge pipe branch road is set, branch road connects the oil cylinder of charger, and second six-way transfer valve (7-23) is set between the oil cylinder of fuel tank (7-1) and charger; Electromagnetic relief valve (7-10) is set between the flowline of described fuel tank (7-1) and the return line; Liquid level gauge (7-2), air cleaner (7-4) and/or liquid level relay (7-6) are set on the described fuel tank (7-1); Temperature inductor (7-19) is set on the described pipeline; Described PMU is pressure inductor (7-20) or first shock-proof pressure gauge (7-11); Described pressure inductor (7-20) connects second shock-proof pressure gauge (7-22), between pressure inductor (7-20) and second shock-proof pressure gauge (7-22) pressure meter switch (7-21) is set; Ram pump (7-7) and retaining valve (7-9) are set on the flowline of described fuel tank (7-1), and ram pump (7-7) connects motor (7-8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228739 CN202631266U (en) | 2012-05-21 | 2012-05-21 | Tractor hydraulic lifting test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228739 CN202631266U (en) | 2012-05-21 | 2012-05-21 | Tractor hydraulic lifting test bench |
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| CN202631266U true CN202631266U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220228739 Expired - Fee Related CN202631266U (en) | 2012-05-21 | 2012-05-21 | Tractor hydraulic lifting test bench |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203338A (en) * | 2015-09-22 | 2015-12-30 | 河南瑞创通用机械制造有限公司 | Hydraulic lift test device for tractor |
| CN109357894A (en) * | 2018-11-07 | 2019-02-19 | 吉林大学 | Tractor rear suspension system off-line test device and its detection method |
| CN110617975A (en) * | 2019-10-28 | 2019-12-27 | 南京工业大学 | Tractor linkage tensile test platform |
| CN115096615A (en) * | 2022-06-09 | 2022-09-23 | 江苏省农业机械试验鉴定站 | Agricultural wheeled tractor linkage lift capacity test system |
-
2012
- 2012-05-21 CN CN 201220228739 patent/CN202631266U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203338A (en) * | 2015-09-22 | 2015-12-30 | 河南瑞创通用机械制造有限公司 | Hydraulic lift test device for tractor |
| CN109357894A (en) * | 2018-11-07 | 2019-02-19 | 吉林大学 | Tractor rear suspension system off-line test device and its detection method |
| CN109357894B (en) * | 2018-11-07 | 2024-03-15 | 吉林大学 | Off-line detection device and detection method for rear suspension system of tractor |
| CN110617975A (en) * | 2019-10-28 | 2019-12-27 | 南京工业大学 | Tractor linkage tensile test platform |
| CN115096615A (en) * | 2022-06-09 | 2022-09-23 | 江苏省农业机械试验鉴定站 | Agricultural wheeled tractor linkage lift capacity test system |
| CN115096615B (en) * | 2022-06-09 | 2024-04-09 | 江苏省农业机械试验鉴定站 | Lifting capacity testing system for suspension device of agricultural wheeled tractor |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20170521 |