CN110926776A - Device and method for detecting lifting capacity of tractor electric control hydraulic suspension system - Google Patents
Device and method for detecting lifting capacity of tractor electric control hydraulic suspension system Download PDFInfo
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- CN110926776A CN110926776A CN201911201271.2A CN201911201271A CN110926776A CN 110926776 A CN110926776 A CN 110926776A CN 201911201271 A CN201911201271 A CN 201911201271A CN 110926776 A CN110926776 A CN 110926776A
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- 238000012360 testing method Methods 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 6
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- 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
- G01M17/04—Suspension or damping
Abstract
The invention discloses a device and a method for detecting the lifting capacity of an electric control hydraulic suspension system of a tractor, wherein the testing device comprises: a test platform; the loading rack is arranged in parallel with the test platform and is fixedly connected with the test platform; one end of the agricultural implement frame is detachably connected to a tractor suspension system; the lifting device is vertically arranged with the loading rack; a position adjusting mechanism provided on the loading stage; the first chain wheel is rotatably arranged on the position adjusting mechanism; the second chain wheel is rotatably arranged on the loading rack; one end of the chain bypasses the first chain wheel and is connected to the frame of the agricultural implement, and the other end of the chain bypasses the second chain wheel and the lifting device and is connected to the loading rack; the position adjusting mechanism can drive the first chain wheel to move, so that the chain is perpendicular to the loading rack; when the position of the frame of the agricultural implement changes, the lifting device can drive the chain to move, and the chain is tensioned.
Description
Technical Field
The invention belongs to the technical field of lifting force testing of a tractor suspension mechanism, and particularly relates to a device and a method for detecting the lifting capacity of an electric control hydraulic suspension system of a tractor.
Background
The hydraulic and hydraulic suspension system is an important component of the tractor, and the performance quality and the working reliability of the hydraulic and hydraulic suspension system are directly related to the overall performance of the tractor. The hydraulic lifting mechanism of the tractor is an important working device connected with an agricultural implement, and national standards have strict requirements on the hydraulic lifting force provided by the tractor, so that the measurement of the lifting force is one of the most important test items of the tractor. National standards also have strict definitions on the method for measuring the hydraulic lifting force of a tractor, and the requirement that the vertical lifting force must be measured is met.
When carrying out the maximum lifting force test of the tractor, the detection standard requires that the maximum lifting force is measured at six points with approximately equal intervals in the lifting range, and the lifting force loading direction of each position must be always vertical to the ground. At present, domestic test equipment needs to repeatedly manually adjust the tractor to hang and search the 6-point position, so that the operation time is long, the measurement and the acquisition of data are inconvenient, and the accuracy of the timing of the lifting time is not accurate and seriously influenced.
At present, methods for realizing the vertical between the loading direction and the ground at home and abroad mainly comprise three methods of adjusting the position of a tractor, hoisting a loading weight and moving a servo motor. The method for loading the lifting force can obtain higher vertical precision by adopting a weight hoisting mode, but the weight hoisting is not only complex in operation, but also dangerous; by installing the servo motor or the position adjusting oil cylinder and directly connecting the servo motor or the position adjusting oil cylinder with the loading oil cylinder, the method for keeping the loading force vertical needs to install the test equipment below the ground, so that the lifting capacity of the lower pull rod of the tractor at the lowest point can be conveniently tested.
In view of the above circumstances, it is necessary to provide a device and a method for detecting the lifting capacity of an electrically controlled hydraulic suspension system of a tractor, which can realize automatic control and automatic counting, reduce the labor intensity of workers, save time, labor and efficiency, have a simple method, are safe and reliable, and are easy to implement.
Disclosure of Invention
The invention designs and develops a lifting capacity detection device of an electric control hydraulic suspension system of a tractor, which changes the loading direction of a lifting force test by matching a plurality of chain wheels and chains, and can realize the lifting force detection of different test positions of an agricultural implement frame by driving the chains to move through a lifting oil cylinder; the detection device can safely and reliably detect the lifting force of the suspension system of the tractor and improve the detection efficiency.
The invention designs and develops a method for detecting the lifting capacity of an electric control hydraulic suspension system of a tractor, in the detection process, the position of a chain is changed by controlling the stroke of a lifting oil cylinder to match and adjust the test height of an agricultural implement frame, and the lifting force is tested.
The invention designs and develops a method for detecting the lifting capacity of an electric control hydraulic suspension system of a tractor, and aims to correct the pulling force on a chain when the oil inlet pressure of a lifting oil cylinder reaches the maximum value at different test heights to obtain the lifting force of the suspension system of the tractor, so that the precision of the detection of the lifting force of the suspension system of the tractor is improved.
The technical scheme provided by the invention is as follows:
a kind of tractor automatically controlled hydraulic suspension system lifting capacity checkout gear, comprising:
a test platform;
the loading rack is arranged in parallel with the test platform, and one end of the loading rack is fixedly connected with one end of the test platform;
one end of the agricultural implement frame is detachably connected to a tractor suspension system;
a lifting device arranged perpendicular to the loading rack;
a position adjustment mechanism provided on the loading stage and located between the implement frame and the loading stage;
a first sprocket rotatably mounted on the position adjustment mechanism;
a second sprocket rotatably mounted on the loading gantry and located between the lifting device and the loading gantry;
a chain, one end of which is wound around the first chain wheel and is connected to the agricultural implement frame, and the other end of which is wound around the second chain wheel and the lifting device and is connected to the loading rack;
the position adjusting mechanism can drive the first chain wheel to move, so that the chain is perpendicular to the loading rack; when the position of the frame of the agricultural implement changes, the lifting device can drive the chain to move, and the chain is tensioned.
Preferably, the position adjustment mechanism includes:
the moving platform is movably arranged on the loading rack;
one end of the position adjusting oil cylinder is fixedly connected to the loading rack, and the other end of the position adjusting oil cylinder is hinged with the moving platform;
wherein the first chain wheel is rotatably mounted on the moving platform.
Preferably, a plurality of sliding grooves are formed in the loading rack along the length direction of the moving platform position adjusting oil cylinder, and a sliding block matched with the sliding grooves in a sliding mode is arranged at the bottom of the moving platform.
Preferably, the lifting device includes:
one end of the lifting oil cylinder is fixedly arranged on the loading rack;
the chain wheel seat is hinged with the other end of the lifting oil cylinder;
a third sprocket rotatably mounted on the sprocket seat;
wherein one end of the chain passes around the third sprocket and is connected with the loading stage.
Preferably, the device for detecting the lifting capacity of the tractor electric control hydraulic suspension system further comprises a lifting oil cylinder mounting seat which is fixedly mounted on the loading rack, and an accommodating space is formed inside the lifting oil cylinder mounting seat;
the lifting oil cylinder is fixedly mounted on the lifting oil cylinder mounting frame, the second chain wheel is located in the accommodating space, and one end of the chain bypasses the third chain wheel and then is connected to the lifting oil cylinder mounting seat.
Preferably, the device for detecting the lifting capability of the tractor electric control hydraulic suspension system further comprises:
and the chain connecting seat is fixedly arranged on the agricultural implement frame and is connected with one end of the chain through a hinge.
Preferably, the device for detecting the lifting capability of the tractor electric control hydraulic suspension system further comprises:
and the pressure regulating valve is arranged on an oil inlet pipeline of the lifting oil cylinder and is used for controlling the pressure of the lifting oil cylinder.
Preferably, the device for detecting the lifting capability of the tractor electric control hydraulic suspension system further comprises:
one end of the agricultural implement frame displacement sensor is connected to the agricultural implement frame, and the other end of the agricultural implement frame displacement sensor is connected to the moving platform;
the agricultural implement frame inclination angle sensor is mounted on the agricultural implement frame and used for detecting an included angle between the agricultural implement frame and the loading rack; and
and the chain tension and pressure sensor is arranged on the chain between the first chain wheel and the second chain wheel and used for detecting tension applied to the chain.
The method for detecting the lifting capacity of the tractor electric control hydraulic suspension system comprises the following steps:
step one, connecting an agricultural implement frame to a tractor suspension system;
step two, lifting the tractor suspension mechanism to the highest point, and detecting the height H of the agricultural implement frameg；
The height H of the frame of the agricultural implement is detected by arranging the suspension mechanism of the tractor to the lowest pointd；
Step three, adjusting the position of a suspension mechanism of the tractor to ensure that the height of the frame of the agricultural implement is as follows:
and controlling the lifting oil cylinder to move the chain to tighten the chain; when the height of the agricultural implement frame is respectively detected, the tensile force applied to the chain when the oil inlet pressure of the lifting oil cylinder reaches the maximum value is detected, and the maximum lifting force of the tractor suspension mechanism is obtained;
when the agricultural implement frame moves, the position of the first chain wheel is adjusted through the position adjusting mechanism, so that the chain is kept perpendicular to the loading rack.
Preferably, the method for detecting the lifting capacity of the tractor electric control hydraulic suspension system further comprises: according to the height at agricultural implement frame place, the pulling force that the chain received when reaching the maximum value to the oil feed pressure of lift cylinder rectifies, obtains the tractor and hangs the biggest lifting force of mechanism, wherein:
when n is equal to 0, the compound is,
and
when n is equal to 5, the compound is,
in the formula (H)g-Hd)maxThe maximum difference value between the highest point and the highest point of the suspension mechanism in the same type of tractor, (H)g-Hd)minThe minimum difference between the highest point and the highest point of the suspension mechanism in the same type of tractor, FYTo lift the measured load of the cylinder, FY-maxThe maximum load of the lifting oil cylinder; fL-maxThe chain is under the tension when the oil inlet pressure of the lifting oil cylinder reaches the maximum value.
The invention has the beneficial effects that:
according to the device for detecting the lifting capacity of the electric control hydraulic suspension system of the tractor, the loading direction of a lifting force test is changed by matching the plurality of chain wheels and the chains, and the chains are pushed to move by the lifting oil cylinder, so that the device can adapt to different test positions of an agricultural implement frame; the detection device can safely and reliably detect the lifting force of the suspension system of the tractor and improve the detection efficiency.
According to the method for detecting the lifting capacity of the tractor electric control hydraulic suspension system, in the detection process, the stroke of the lifting oil cylinder is controlled to change the position of the chain to match and adjust the test height of the agricultural implement frame, so that the lifting force test is performed, and the maximum lifting force of the tractor suspension system at different test heights can be quickly detected.
According to the method for detecting the lifting capacity of the tractor electric control hydraulic suspension system, the pulling force applied to the chain when the oil inlet pressure of the lifting oil cylinder reaches the maximum value is corrected to obtain the lifting force of the tractor suspension system at different test heights, so that the precision of the detection of the lifting force of the tractor suspension system is improved.
Drawings
Fig. 1 is a schematic structural diagram of the general structure of the device for detecting the lifting capacity of the tractor electric control hydraulic suspension system.
Fig. 2 is a front view of the lifting force loading means according to the present invention.
Fig. 3 is a general structural diagram of a lifting force loading device part according to the invention.
Fig. 4 is an enlarged detail view at a in fig. 3.
Fig. 5 is a schematic structural diagram of a lifting force loading device part according to the invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1-5, the invention provides a device for detecting the lifting capacity of an electric control hydraulic suspension system of a tractor, which mainly comprises: the test platform 110, the loading platform 120, the agricultural implement frame 130, the lifting device 140, the position adjusting mechanism 150, the first chain wheel 160, the second chain wheel 170 and the chain 180.
The test platform 110 is horizontally disposed and fixed on a horizontal ground. The loading stage 120 is horizontally disposed and fixed on a horizontal ground, and one end of the loading stage 120 is fixedly connected to one end of the test platform 110 by a bolt. The tractor body 210 is fixedly arranged on the test platform 110, and a tractor suspension system 220 is arranged behind the tractor body 210.
One end of the implement frame 130 is detachably connected to the tractor suspension system 220 by a pin, so that the implement frame 130 can move along with the tractor suspension system 220. The lifting device 140 is disposed perpendicular to the loading stage 120 and at an end of the loading stage 120 remote from the test platform 110.
A position adjustment mechanism 150 is disposed on the loading bed 120 and between the implement frame 130 and the loading bed 110. The first sprocket 160 is rotatably mounted on the position adjustment mechanism 150 by a sprocket support. The second sprocket 170 is rotatably mounted to the loading stage 120 by a sprocket support, and is located between the lifting device 140 and the loading stage 120, i.e., below the lifting device 140. One end of the chain 180 is looped around the first sprocket 160 and attached to the implement frame, and the other end of the chain 180 is looped around the second sprocket 170 and the lifting device 140 and attached to the loading stand 120. The position adjusting mechanism 150 can drive the first chain wheel 160 to move, so that the first chain wheel 160 is close to or far away from the test platform 110, and the chain 180 can be kept perpendicular to the loading rack 120 when the position of the agricultural implement frame 130 is changed; the lifting device 140 can move the chain 180, and when the height of the implement frame 130 changes, the lifting device 140 can pull the chain 180 tight.
As shown in fig. 2 to 3, in the present embodiment, the position adjustment mechanism 150 includes: a moving platform 151 provided on the loading stage 120; a position adjusting cylinder 152, one end of which is fixedly connected to the loading rack 120 and the other end of which is hinged to the moving platform 151; the piston rod of the position adjusting cylinder 152 extends or shortens to drive the moving platform 151 to move along the length direction of the loading platform 120, and the moving platform is close to or far away from the testing platform 110. Wherein the first chain wheel 160 is rotatably mounted on the moving platform 151 through a chain wheel carrier so as to be capable of moving synchronously with the moving platform 151.
Preferably, the loading platform 120 is provided with a plurality of sliding grooves 121 along the length direction of the test platform 120, and a sliding block (not shown) sliding along the sliding grooves 121 is disposed at the bottom of the moving platform 151, so as to guide the movement of the moving platform 151.
In this embodiment, the lifting device 140 includes: a lift cylinder 141, a lift cylinder mounting base 142, a third chain wheel 143 and a chain wheel base 144. The lifting cylinder mounting base 142 is fixedly mounted on the loading rack 120, the base of the lifting cylinder 141 is fixedly mounted on the top of the lifting cylinder mounting base 142, the lifting cylinder mounting base 142 is internally provided with an accommodating space 142a, the chain wheel base 144 is hinged with the top of the piston rod of the lifting cylinder 141, and the third chain wheel 143 is rotatably mounted on the chain wheel base 144. The second sprocket 170 is located in the accommodating space 142a of the mounting base 142, so that the second sprocket 170 is located right below the lift cylinder 141. One end of the chain 180 is hinged on the lifting oil cylinder mounting seat 142 by bypassing the second chain wheel 170 and the third chain wheel 143; thereby making the stroke of the chain 180 2 times that of the lift cylinder 141. Therefore, the lifting oil cylinder with a small stroke can be selected, the space is saved, multi-point testing can be provided in the lifting stroke of the tractor, the data volume is increased, and the lifting force prediction precision is improved.
In this embodiment, the device for detecting the lifting capability of the electric control hydraulic suspension system of the tractor further comprises: and a pressure regulating valve (not shown) using three proportional pressure reducing valves, which is provided on an oil inlet line of the lift cylinder 141 to control the pressure of the lift cylinder. By adjusting the pressure regulating valve, an initial pressure is provided to the lift cylinder 141, which pressure ensures that the chain 180 is in tension at all times. When the agricultural implement frame 130 reaches the position (height) required by the test, the pressure of the three-way proportional pressure reducing valve is adjusted to reach the maximum value, and the oil cylinder is locked.
In another embodiment, as shown in fig. 3-4, the device for detecting the lifting capability of the electrically controlled hydraulic suspension system of the tractor further comprises: and the chain connecting seat 190 is fixedly arranged on the agricultural implement frame 130, and the chain connecting seat 190 is hinged with one end of the chain 180 through a rotating shaft 191.
In addition, automatically controlled hydraulic suspension system lifting capacity detection device of tractor, still include: an agricultural implement frame displacement sensor 310, which is a preferable agricultural implement frame displacement sensor 310, adopts a pull wire sensor, one end of the pull wire sensor is connected to the chain connecting seat 190, and the other end of the pull wire sensor is connected to the moving platform 151; the displacement detection device is used for detecting the displacement of the agricultural implement frame in the vertical direction; because the stay wire sensor and the chain 180 are parallel and move synchronously, the stay wire sensor can always keep a vertical state, the displacement of the agricultural implement frame 130 can be accurately measured through the stay wire sensor, and the measurement result of the stay wire sensor is more accurate compared with other non-contact sensors. An agricultural implement frame tilt angle sensor 320, which is mounted on the agricultural implement frame 130 and is used for detecting an included angle between the agricultural implement frame 130 and the loading rack 120; a chain tension and pressure sensor 330 mounted on the chain 180 between the first sprocket 160 and the second sprocket 170 for detecting tension applied to the chain 180; and a lift cylinder displacement sensor 340 provided on the lift cylinder 141 for detecting a stroke of the lift cylinder 141; the electric control cabinet 350 is internally provided with a control system of the lifting capacity detection device of the tractor electric control hydraulic suspension system; and a control panel 360 for inputting test parameters. Wherein, the control panel 360, the displacement sensor 310 of the frame of the agricultural implement, the tilt sensor 320 of the frame of the agricultural implement, the chain tension pressure sensor 330 and the lifting force cylinder displacement sensor 340 are respectively electrically connected with the control system.
The invention also provides a method for detecting the lifting capacity of the tractor electric control hydraulic suspension system, and the device for detecting the lifting capacity of the tractor electric control hydraulic suspension system comprises the following steps:
step one, connecting an agricultural implement frame to a tractor suspension system;
step two, lifting the tractor suspension mechanism to the highest point, and detecting the height H of the agricultural implement frameg；
The height H of the frame of the agricultural implement is detected by arranging the suspension mechanism of the tractor to the lowest pointd；
Step three, adjusting the position of a suspension mechanism of the tractor to ensure that the heights of the frames of the agricultural implements are respectively as follows:
controlling the lifting oil cylinder to enable the chain to move, enabling the length of the chain to be matched with the height of the agricultural implement frame, and tensioning the chain; by adjusting the pressure regulating valve, an initial pressure is provided for the lifting force cylinder 141, which pressure ensures that the chain 180 is in a tensioned state at all times; when the frame of the agricultural implement reaches the position (height) required by the test, adjusting the pressure regulating valve to enable the pressure entering the lifting oil cylinder to reach the maximum value, and locking the oil cylinder; at the moment, the pulling force applied to the chain is detected, namely the maximum lifting force of the tractor suspension mechanism.
Meanwhile, when the agricultural implement frame moves, the inclination angle of the agricultural implement frame is detected through the agricultural implement frame inclination angle sensor 320, the position change of the chain is determined, and the position of the first chain wheel is adjusted through the position adjusting mechanism, so that the chain is kept perpendicular to the loading rack (the loading chain is kept to be always kept vertically downward).
In another embodiment, the method further comprises correcting the maximum lifting force of the tractor suspension mechanism according to the height of the frame of the agricultural implement, comprising:
when n is equal to 0, the compound is,
and
when n is equal to 5, the compound is,
when n is 2, 3 or 4, F is FL-max。
In the formula (H)g-Hd)maxThe maximum difference value between the highest point and the highest point of the suspension mechanism in the same type of tractor, (H)g-Hd)minThe minimum difference between the highest point and the highest point of the suspension mechanism in the same type of tractor, FYThe actual measurement load of the lifting oil cylinder can be measured by installing a load sensor on the lifting oil cylinder; fY-maxThe maximum load of the lifting oil cylinder; fL-maxThe maximum tension to which the chain is subjected when the frame of the agricultural implement is maintained at the current height. And correcting the pulling force of the chain when the oil inlet pressure of the lifting oil cylinder reaches the maximum value at the highest test position and the lowest test position according to experience to obtain the lifting force of the tractor suspension system, so that the precision of the detection of the lifting force of the tractor suspension system is improved.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides an automatically controlled hydraulic suspension system lifting capacity detection device of tractor which characterized in that includes:
a test platform;
the loading rack is arranged in parallel with the test platform, and one end of the loading rack is fixedly connected with one end of the test platform;
one end of the agricultural implement frame is detachably connected to a tractor suspension system;
a lifting device arranged perpendicular to the loading rack;
a position adjustment mechanism provided on the loading stage and located between the implement frame and the loading stage;
a first sprocket rotatably mounted on the position adjustment mechanism;
a second sprocket rotatably mounted on the loading gantry and located between the lifting device and the loading gantry;
a chain, one end of which is wound around the first chain wheel and is connected to the agricultural implement frame, and the other end of which is wound around the second chain wheel and the lifting device and is connected to the loading rack;
the position adjusting mechanism can drive the first chain wheel to move, so that the chain is perpendicular to the loading rack; when the position of the frame of the agricultural implement changes, the lifting device can drive the chain to move, and the chain is tensioned.
2. The device for detecting the lifting capability of an electrically controlled hydraulic suspension system of a tractor according to claim 1, wherein the position adjusting mechanism comprises:
the moving platform is movably arranged on the loading rack;
one end of the position adjusting oil cylinder is fixedly connected to the loading rack, and the other end of the position adjusting oil cylinder is hinged with the moving platform;
wherein the first chain wheel is rotatably mounted on the moving platform.
3. The device for detecting the lifting capacity of the electric control hydraulic suspension system of the tractor according to claim 2, wherein a plurality of sliding grooves are formed in the loading rack along the length direction of the position adjusting oil cylinder of the moving platform, and a sliding block matched with the sliding grooves in sliding is arranged at the bottom of the moving platform.
4. The device for detecting the lifting capacity of an electrically controlled hydraulic suspension system of a tractor according to claim 1 or 3, wherein the lifting device comprises:
one end of the lifting oil cylinder is fixedly arranged on the loading rack;
the chain wheel seat is hinged with the other end of the lifting oil cylinder;
a third sprocket rotatably mounted on the sprocket seat;
wherein one end of the chain passes around the third sprocket and is connected with the loading stage.
5. The device for detecting the lifting capacity of the electric control hydraulic suspension system of the tractor according to claim 4, further comprising a lifting cylinder mounting seat which is fixedly mounted on the loading rack, wherein an accommodating space is formed inside the lifting cylinder mounting seat;
the lifting oil cylinder is fixedly mounted on the lifting oil cylinder mounting frame, the second chain wheel is located in the accommodating space, and one end of the chain bypasses the third chain wheel and then is connected to the lifting oil cylinder mounting seat.
6. The device for detecting the lifting capacity of the electric control hydraulic suspension system of the tractor according to claim 5, further comprising:
and the chain connecting seat is fixedly arranged on the agricultural implement frame and is connected with one end of the chain through a hinge.
7. The device for detecting the lifting capacity of the electric control hydraulic suspension system of the tractor according to claim 6, further comprising:
and the pressure regulating valve is arranged on an oil inlet pipeline of the lifting oil cylinder and is used for controlling the pressure of the lifting oil cylinder.
8. The device for detecting the lifting capacity of the electrically controlled hydraulic suspension system of the tractor according to claim 7, further comprising:
one end of the agricultural implement frame displacement sensor is connected to the agricultural implement frame, and the other end of the agricultural implement frame displacement sensor is connected to the moving platform;
the agricultural implement frame inclination angle sensor is mounted on the agricultural implement frame and used for detecting an included angle between the agricultural implement frame and the loading rack; and
and the chain tension and pressure sensor is arranged on the chain between the first chain wheel and the second chain wheel and used for detecting tension applied to the chain.
9. A method for detecting the lifting capacity of an electric control hydraulic suspension system of a tractor, which uses the device for detecting the lifting capacity of the electric control hydraulic suspension system of the tractor according to any one of claims 1 to 8, and is characterized by comprising the following steps:
step one, connecting an agricultural implement frame to a tractor suspension system;
step two, lifting the tractor suspension mechanism to the highest point, and detecting the height H of the agricultural implement frameg；
The height H of the frame of the agricultural implement is detected by arranging the suspension mechanism of the tractor to the lowest pointd；
Step three, adjusting the position of a suspension mechanism of the tractor to ensure that the height of the frame of the agricultural implement is as follows:
and controlling the lifting oil cylinder to move the chain to tighten the chain; when the height of the agricultural implement frame is respectively detected, the tensile force applied to the chain when the oil inlet pressure of the lifting oil cylinder reaches the maximum value is detected, and the maximum lifting force of the tractor suspension mechanism is obtained;
when the agricultural implement frame moves, the position of the first chain wheel is adjusted through the position adjusting mechanism, so that the chain is kept perpendicular to the loading rack.
10. The method for detecting the lifting capacity of the electric control hydraulic suspension system of the tractor according to claim 9, characterized by further comprising the following steps: according to the height at agricultural implement frame place, the pulling force that the chain received when reaching the maximum value to the oil feed pressure of lift cylinder rectifies, obtains the tractor and hangs the biggest lifting force of mechanism, wherein:
when n is equal to 0, the compound is,
and
when n is equal to 5, the compound is,
in the formula (H)g-Hd)maxThe maximum difference value between the highest point and the highest point of the suspension mechanism in the same type of tractor, (H)g-Hd)minThe minimum difference between the highest point and the highest point of the suspension mechanism in the same type of tractor, FYTo increase the measured load of the apparatus, FY-maxIs the maximum load of the lifting device; fL-maxThe chain is under the tension when the oil inlet pressure of the lifting oil cylinder reaches the maximum value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201271.2A CN110926776B (en) | 2019-11-29 | Lifting capacity detection device and detection method for tractor electric hydraulic suspension system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201271.2A CN110926776B (en) | 2019-11-29 | Lifting capacity detection device and detection method for tractor electric hydraulic suspension system |
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| CN110926776A true CN110926776A (en) | 2020-03-27 |
| CN110926776B CN110926776B (en) | 2024-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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