CN109141704A - A kind of tractor PTO testing stand with raising speed case - Google Patents
A kind of tractor PTO testing stand with raising speed case Download PDFInfo
- Publication number
- CN109141704A CN109141704A CN201811322970.8A CN201811322970A CN109141704A CN 109141704 A CN109141704 A CN 109141704A CN 201811322970 A CN201811322970 A CN 201811322970A CN 109141704 A CN109141704 A CN 109141704A
- Authority
- CN
- China
- Prior art keywords
- raising speed
- speed case
- dynamometer machine
- tractor
- driving wheel
- Prior art date
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 68
- 230000008878 coupling Effects 0.000 claims abstract description 35
- 238000010168 coupling process Methods 0.000 claims abstract description 35
- 238000005859 coupling reaction Methods 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000013016 damping Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000009863 impact test Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
- G01L3/242—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity by measuring and simultaneously multiplying torque and velocity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of tractor PTO testing stand with raising speed case, belongs to the technical field of tractor test.Technical points include dynamometer machine, the test lead of the dynamometer machine is connected with the raising speed case turned round for speedup drop, the raising speed case is connected with the Hooks coupling universal coupling for being connected with the output shaft of tractor test specimen, and the lower section of the dynamometer machine is equipped with the lifting device for adjusting the level height of raising speed case and dynamometer machine.Invention increases the revolving speeds that raising speed case is used to increase tractor test specimen output shaft, reduce its torque, to reduce the corresponding range requirement of dynamometer machine, reduce the cost for using dynamometer machine, increase lifting device simultaneously, it is able to maintain Hooks coupling universal coupling in same level general work, avoids angle larger impact test result and existing security risk.
Description
Technical field
The present invention relates to a kind of tractor test platforms, test more specifically to a kind of tractor PTO with raising speed case
Platform.
Background technique
PTO testing stand is the important equipment of Tractor Products exploitation and verification experimental verification, and " identification of DG/T001 agricultural machinery popularization is big
Guiding principle: agriculture wheeled and crawler tractor " and " 3871.3 agricultural traction engine testing regulations third portion of GB/T: power output shaft work
Rate test " in power at the power takeoff test be required to be tested on tractor PTO testing stand.Accurately quickly drawn
Power output shaft power test has important meaning for dynamic property, economy and the entire vehicle design effect of evaluating tractor
Justice.
Existing testing program is that tractor PTO shaft is connected directly with dynamometer machine, to the power and torque of the dynamometer machine slow-speed of revolution
Range it is more demanding, general only electric DC dynamometer can just be met the requirements, at high cost；Dynamometer machine is directly installed on simultaneously
On fixed base station, it can not achieve upper-lower height adjustment, do not adapt to the variation of a variety of tractor type height of output shaft.And due to
Dynamometer machine height cannot be adjusted, if tractor PTO output shaft differs larger with dynamometer machine input shaft height, be connected with the two
Shaft coupling angle is larger, and there are security risks.Factors above leads to prior art higher cost, adapts to the tractor type of measurement
It is few.
Summary of the invention
The present invention provides a kind of reliability that can be reduced dynamometer machine use cost, dynamometer machine height is adjusted, increases test
With the tractor PTO testing stand with raising speed case of safety.
To achieve the above object, a kind of tractor PTO testing stand with raising speed case provided by the invention, including dynamometer machine,
The test lead of the dynamometer machine is connected with the raising speed case turned round for speedup drop, and the raising speed case, which is connected with, to be used for and tractor
The Hooks coupling universal coupling that the output shaft of test specimen is connected, the lower section of the dynamometer machine are equipped with for adjusting raising speed case and dynamometer machine
The lifting device of level height.
Further, the raising speed case includes the input shaft being connected with Hooks coupling universal coupling and the test lead with dynamometer machine
The output shaft being connected is connected between the input shaft and output shaft by gear set, the tractor test specimen, universal
Shaft coupling and input shaft are in same level, and the test lead of the output shaft and dynamometer machine is in same level.
Further, the gear set includes first driving wheel and second driving wheel coaxially arranged with input shaft, institute
The output shaft stated is equipped with the first driven wheel being meshed with the first driving wheel and second to be meshed with the second driving wheel is driven
Wheel is equipped with the shift arranged with input shaft coaxial line and rotated jointly with it between first driving wheel and the second driving wheel
Wheel, shift wheel is can be by along the rotation synchronous with one of the first driving wheel or the second driving wheel of input shaft axially reciprocating
The structure turned.
Further, the transmission ratio of first driving wheel and the first driven wheel is 0.20~0.25, described second
The transmission ratio of driving wheel and the second driven wheel is 0.30~0.35.
Further, the shift wheel side, which is equipped with, can stir shift wheel dialling along input shaft axially reciprocating
Bar, the driving lever are connected to one in the vertically disposed rotary shaft of input shaft, and the rotary shaft is pierced by raising speed box enclosure
One end is equipped with the handle that rotary shaft can be made to rotate.
Further, the lifting device includes the platform for installing raising speed case and dynamometer machine, under the platform
Side is evenly distributed with hydraulic stem.
Further, the elastic component for damping is equipped between the hydraulic stem and platform.
Beneficial effect
Compared with prior art, the invention has the following advantages that
1, the cost of the dynamometer machine used present invention reduces tractor PTO testing stand, and adapt to various tractors
The test of test specimen can adjust the revolving speed and torque of the output of tractor PTO shaft by raising speed case, realize the function that speedup drop is turned round,
To reduce range requirement of the dynamometer machine to power and torque, can complete to try without using high-cost electric DC dynamometer
It tests, save the cost；
2, raising speed case cleverly interior design can be led to by the adjusting of shift wheel to realize two different transmission variations
The different corresponding revolving speed of ratio changing output shaft and torque are crossed, the range requirement of dynamometer machine is complied with, to adapt to more
The test of kind tractor test specimen；
3, the lifting device that the present invention is equipped with can adjust the relative altitude of raising speed case and dynamometer machine in a certain range, adapt to
The variation of a variety of tractor type height of output shaft, so that Hooks coupling universal coupling be made to be in horizontal position, reduction is formed with ground
Angle, keep test result relatively reliable, the process of test is also safer.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the elevational cross-sectional view of raising speed case of the invention；
Fig. 3 is the side view cutaway drawing of raising speed case of the invention.
In figure: 1, tractor test specimen；2, Hooks coupling universal coupling；3, raising speed case；31, input shaft；32, output shaft；33, first is main
Driving wheel；34, the first driven wheel；35, the second driving wheel；36, the second driven wheel；37, shift wheel；38, driving lever；39, rotary shaft；
310, handle；4, dynamometer machine；5, lifting device；51, platform；52, hydraulic stem；53, elastic component.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
The embodiment of the present invention is such that as shown in Figures 1 to 3 a kind of tractor PTO testing stand with raising speed case wraps
Include dynamometer machine 4, the test lead of dynamometer machine 4 is connected with the raising speed case 3 turned round for speedup drop, raising speed case 3 be connected with for it is dilatory
The lower section of the Hooks coupling universal coupling 2 that the output shaft of machine test specimen 1 is connected, dynamometer machine 4 is equipped with for adjusting raising speed case 3 and dynamometer machine 4
Level height lifting device 5.Present invention reduces the costs for the dynamometer machine 4 that tractor PTO testing stand uses, and can fit
The test of various tractor test specimens 1 is answered, the revolving speed and torque of the output of tractor PTO shaft can be adjusted by raising speed case 3, realizes and increases
The function that prompt drop is turned round is surveyed to reduce range requirement of the dynamometer machine 4 to power and torque without using high-cost direct current power
Function machine can be completed to test, save the cost.The present invention is further equipped with lifting device, can adjust 3 He of raising speed case in a certain range
The relative altitude of dynamometer machine 4, adapts to the variation of a variety of tractor type height of output shaft, so that Hooks coupling universal coupling 2 be made to be in water
Flat position reduces the angle formed with ground, keeps test result relatively reliable, the process of test is also safer.
In the present embodiment, raising speed case 3 includes the input shaft 31 being connected with Hooks coupling universal coupling 2 and the survey with dynamometer machine 4
The output shaft 32 that is connected of examination end, is connected between input shaft 31 and output shaft 32 by gear set, tractor test specimen 1, universal
Shaft coupling 2 and input shaft 31 are in same level, and the test lead of output shaft 32 and dynamometer machine 4 is in same level.
Linkage in the present invention between each axis is connected by ring flange, and the input shaft 31 and output shaft 32 of raising speed case 3 keep horizontal
Setting when test, guarantees that tractor test specimen 1, Hooks coupling universal coupling 2 and input shaft 31 are in same level, then universal
Axis device 2 will not form angle with ground, be transferred to output shaft 32 and be also in same level with the test lead of dynamometer machine 4, because
The tractor test specimen 1 of this dynamometer machine 4 test can be more accurate, the angle influence for being driven mechanism is reduced, to generate other
The component in direction influences the test result for being finally transferred to dynamometer machine 4, moreover, keeping the level of Hooks coupling universal coupling 2, is also prevented from
Hooks coupling universal coupling 2 connect with tractor test specimen 1 security risk when transmission, will not make universal because of there is certain angle
2 discontinuity of shaft coupling causes safety accident to be disconnected.
In the present embodiment, gear set includes first driving wheel 33 and second driving wheel coaxially arranged with input shaft 31
35, output shaft 32 be equipped with the first driven wheel 34 for being meshed with the first driving wheel 33 and be meshed with the second driving wheel 35 the
Two driven wheels 36 are equipped between first driving wheel 33 and the second driving wheel 35 and arrange with 31 coaxial line of input shaft and with its common rotation
The shift wheel 37 turned, shift wheel 37 for can by along input shaft 31 axially reciprocating and with the first driving wheel 33 or second actively
The structure of one of them synchronous rotary of wheel 35.Input shaft 31 and output shaft 32 is set to link by gear set in raising speed case 3, Ke Yishe
It is set to multiple gears, it is only necessary to guarantee that transmission ratio can achieve the effect that speedup drop is turned round less than 1.In the present embodiment, use
It is two gears, shift wheel 37 and input shaft 31 are cooperated by gear, and shift wheel 37 and input shaft can also be enable by spline
31 rotate synchronously, and shift wheel 37 can move along its axis, thus make the gears of 37 sides of shift wheel respectively with the first driving wheel 33
It matches with the internal gear of the second driving wheel 35, to drive corresponding first driven wheel 34 and the second driven wheel 36 to rotate, reaches
Use the effect of different gear sets.The transmission ratio of first driving wheel 33 and the first driven wheel 34 is 0.231, the second driving wheel 35
Transmission ratio with the second driven wheel 36 is 0.337.This two groups of transmission ratios are set, wanting for most of tractor test specimens 1 can be met
It asks, when making to test the tractor test specimen 1 of slow-speed of revolution high torque, speedup can drop torsion as far as possible, reach the amount of the dynamometer machine 4 of low cost
Range request.
In the present embodiment, 37 sides of shift wheel, which are equipped with, can stir shift wheel 37 along 31 axially reciprocating of input shaft
Driving lever 38, driving lever 38 are connected to one in the vertically disposed rotary shaft 39 of input shaft 31, and rotary shaft 39 is pierced by 3 shell of raising speed case
One end is equipped with the handle 310 that rotary shaft 39 can be made to rotate.The shift mode of the raising speed case 3 is to control rotary shaft by handle 310
39 rotation, to drive the rotation of driving lever 38.And the internal gear of shift gears wheel 37 and the first driving wheel 33 and the second driving wheel 35
It matches, the gear on lateral wall, which forms middle part, annular groove, and 38 one end of driving lever is equipped with the reversed column stretched in annular groove, stirs
Shift wheel 37 is axially moved along input shaft 31, is cooperated respectively with the gear of two sides, realizes replacement gear.
In the present embodiment, lifting device 5 includes the platform 51 for installing raising speed case 3 and dynamometer machine 4,51 lower section of platform
It is evenly distributed with hydraulic stem 52.There are corresponding groove and screw holes on platform 51, are stably installed raising speed case 3 and dynamometer machine 4
On platform 51, the test lead of dynamometer machine 4 and 32 same level of output shaft of raising speed case 3 are arranged, then can pass through more
Hydraulic stem 52 moves synchronously, and goes up and down platform 51 smoothly, adjusts input shaft 31 and Hooks coupling universal coupling 2, tractor test specimen 1 are equal
In same level, the stability of transmission and the accuracy of test are improved.It is equipped with and is used between hydraulic stem 52 and platform 51
The elastic component 53 of damping.Elastic component 53 is damping spring, so that reducing the vibration that dynamometer machine 4 generates at work influences, is improved
Safety.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, is not taking off
Under the premise of from structure of the invention, also in advance to make several modifications and improvements, these all will not influence the effect that the present invention is implemented
And patent practicability.
Claims (7)
1. a kind of tractor PTO testing stand with raising speed case, including dynamometer machine (4), which is characterized in that the dynamometer machine (4)
Test lead be connected with for speedup drop turn round raising speed case (3), the raising speed case (3) be connected with for tractor test specimen
(1) Hooks coupling universal coupling (2) that output shaft is connected, the lower section of the dynamometer machine (4) be equipped with for adjust raising speed case (3) and
The lifting device (5) of the level height of dynamometer machine (4).
2. a kind of tractor PTO testing stand with raising speed case according to claim 1, which is characterized in that the raising speed
Case (3) includes the input shaft (31) being connected with Hooks coupling universal coupling (2) and the output shaft being connected with the test lead of dynamometer machine (4)
(32), it is connected between the input shaft (31) and output shaft (32) by gear set, the tractor test specimen (1), ten thousand
It is in same level to shaft coupling (2) and input shaft (31), at the test lead of the output shaft (32) and dynamometer machine (4)
In in same level.
3. a kind of tractor PTO testing stand with raising speed case according to claim 2, which is characterized in that the gear
Group includes first driving wheel (33) and second driving wheel (35) coaxially arranged with input shaft (31), on the output shaft (32)
It is meshed equipped with the first driven wheel (34) being meshed with the first driving wheel (33) and with the second driving wheel (35) second driven
Take turns (36), between first driving wheel (33) and the second driving wheel (35) be equipped with input shaft (31) coaxial line arrangement and with
Its shift wheel (37) rotated jointly, shift wheel (37) be can and along input shaft (31) axially reciprocating with first actively
Take turns the structure of one of (33) or the second driving wheel (35) synchronous rotary.
4. a kind of tractor PTO testing stand with raising speed case according to claim 3, which is characterized in that described first
The transmission ratio of driving wheel (33) and the first driven wheel (34) is 0.20~0.25, second driving wheel (35) and second driven
The transmission ratio for taking turns (36) is 0.30~0.35.
5. a kind of tractor PTO testing stand with raising speed case according to claim 3 or 4, which is characterized in that described changes
Gear wheel (37) side, which is equipped with one end, can stir shift wheel (37) along the driving lever (38) of input shaft (31) axially reciprocating, dial
The other end of bar (38) is connected to one in input shaft (31) vertically disposed rotary shaft (39), and the rotary shaft (39) is pierced by
One end of raising speed case (3) shell is equipped with the handle (310) that rotary shaft (39) can be made to rotate.
6. a kind of tractor PTO testing stand with raising speed case according to claim 1, which is characterized in that the lifting
Device (5) includes the platform (51) for installing raising speed case (3) and dynamometer machine (4), is uniformly distributed below the platform (51)
There are hydraulic stem (52).
7. a kind of tractor PTO testing stand with raising speed case according to claim 6, which is characterized in that described is hydraulic
The elastic component (53) for damping is equipped between bar (52) and platform (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322970.8A CN109141704A (en) | 2018-11-08 | 2018-11-08 | A kind of tractor PTO testing stand with raising speed case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322970.8A CN109141704A (en) | 2018-11-08 | 2018-11-08 | A kind of tractor PTO testing stand with raising speed case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109141704A true CN109141704A (en) | 2019-01-04 |
Family
ID=64808088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811322970.8A Pending CN109141704A (en) | 2018-11-08 | 2018-11-08 | A kind of tractor PTO testing stand with raising speed case |
Country Status (1)
| Country | Link |
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| CN (1) | CN109141704A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202182174U (en) * | 2011-07-31 | 2012-04-04 | 长城汽车股份有限公司 | Automobile electric gearshift mechanism |
| CN202393602U (en) * | 2011-12-08 | 2012-08-22 | 洛阳西苑车辆与动力检验所有限公司 | Integrated loading testing table for high-power wheeled tractor |
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| CN206884050U (en) * | 2017-06-05 | 2018-01-16 | 嘉兴市赛腾新材料科技有限公司 | A kind of mould transfer cart |
| CN207470762U (en) * | 2017-07-18 | 2018-06-08 | 重庆福特来动力科技有限公司 | Electric vehicle automatic gear shift apparatus |
| CN108146649A (en) * | 2018-02-10 | 2018-06-12 | 清远韶兴新能源科技有限公司 | A kind of unmanned plane Portable lifting platform |
| CN207890566U (en) * | 2018-02-24 | 2018-09-21 | 广西鄂中肥业有限公司 | Efficient automatic stacker |
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-
2018
- 2018-11-08 CN CN201811322970.8A patent/CN109141704A/en active Pending
Patent Citations (9)
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|---|---|---|---|---|
| CN202182174U (en) * | 2011-07-31 | 2012-04-04 | 长城汽车股份有限公司 | Automobile electric gearshift mechanism |
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| CN205534177U (en) * | 2016-03-14 | 2016-08-31 | 宁波甬野拖拉机制造有限公司 | Tractor structure of shifting |
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| CN207890566U (en) * | 2018-02-24 | 2018-09-21 | 广西鄂中肥业有限公司 | Efficient automatic stacker |
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| CN208765881U (en) * | 2018-11-08 | 2019-04-19 | 广西玉柴机器股份有限公司 | A kind of tractor PTO testing stand with raising speed case |
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Application publication date: 20190104 |