CN101846566A - Device for measuring longitudinal force of lower pull rod for plowing machine - Google Patents
Device for measuring longitudinal force of lower pull rod for plowing machine Download PDFInfo
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- CN101846566A CN101846566A CN 201010162436 CN201010162436A CN101846566A CN 101846566 A CN101846566 A CN 101846566A CN 201010162436 CN201010162436 CN 201010162436 CN 201010162436 A CN201010162436 A CN 201010162436A CN 101846566 A CN101846566 A CN 101846566A
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Abstract
The invention discloses a device for measuring the longitudinal force of a lower pull rod for a plowing machine, comprising a force sensor. The force sensor is arranged on the lower pull rod of a hanging mechanism for a tractor; the lower pull rod extends longitudinally and comprises a first half and a second half; a connecting mechanism for making the first half of the lower pull rod and the second half of the lower pull rod have the only longitudinal freedom degree is arranged between the first half of the lower pull rod and the second half of the lower pull rod and is provided with a mounting part which can transmit only the branched longitudinal force of the lower pull rod to the force sensor; the force sensor is arranged on the mounting part; and the first half of the lower pull rod and the second half of the lower pull rod are fixed together through the connecting mechanism and the force sensor. The device can be used for accurately measuring the longitudinal force of the lower pull rod in both the shallow plowing process and the deep plowing process so that the plowing depth can be effectively controlled.
Description
Technical field
The present invention relates to agricultural machinery technological field, be specifically related to a kind of device that in the cultivation operation process, is used to measure longitudinal force of lower pull rod for plowing machine.
Background technology
Existing ploughing machinery all is to connect by the tractor rear hitch to realize towage, and upper and lower tie rod end and tillage implements in the hitch are hinged, and the middle part of lower link is hinged by lifting arm and lift arm, and lift arm is connected with control device.The ploughing machinery bigger to power, because tractive force is bigger, the tillage implements quality is big, usually adopt the mode of lower-link sensing, measure tillage implements and act on lower link pulling force longitudinally, will be subjected to force information to be delivered to control device then, realization is controlled (being the power control mode) to unit, as shown in Figure 1, be the stressed synoptic diagram of lower link, the end, upstream of lower link is stressed to act on power N on the lower link for bearing pin
1Downstream end is stressed to act on power F on the lower link for tillage implements
N, mainly be the gravity of tillage implements and the resistance of soil; The stressed power P that by lifting arm lower link is applied for lift arm in the middle part of lower link.As can be seen from Figure, stressed two parts that are divided into of lower link are along the pull bar longitudinal force with perpendicular to pull bar power longitudinally.Traditional dynamometry mode, no matter force cell is installed in the optional position of lower link, measurement be making a concerted effort of above-mentioned two kinds of power, and approx will be with joint efforts as the longitudinal force of lower link, owing to be subjected to perpendicular to the influence of power longitudinally, cause the measuring error of longitudinal pulling force bigger, especially the shallow plowing operation in, soil resistance is less, at this moment tillage implements gravity accounts for leading, the vertical stress component of lower link is very big, and the resultant error of measurement is also very big, even can not measure.Therefore, traditional power control mode can only be used in the deep ploughing operation approx, is not suitable for being used in the shallow plowing operation.
Summary of the invention
Technical matters to be solved by this invention provides a kind of device for measuring longitudinal force of lower pull rod for plowing machine, no matter in the deep ploughing operation or in the shallow plowing operation, this measurement mechanism can both accurately be measured the longitudinal force of lower link, thereby tilling depth is control effectively.
For solving the problems of the technologies described above, technical scheme of the present invention is: device for measuring longitudinal force of lower pull rod for plowing machine, comprise force transducer, described force transducer is installed on the lower link in the tractor hitch, the bearing of trend of described lower link is vertically, and the vertical plane at the bearing of trend place of described lower link is vertical vertical plane; Described lower link comprises the first pull bar halfbody and the second pull bar halfbody, being provided with between described first pull bar halfbody and the described second pull bar halfbody makes both only have the bindiny mechanism of the longitudinal degress of feedom, described bindiny mechanism is provided with the installation portion that only vertical component of lower link is passed to described force transducer, described force transducer is installed on the described installation portion, and the described first pull bar halfbody and the second pull bar halfbody are fixed together by described bindiny mechanism and described force transducer.
As a kind of optimized technical scheme, described force transducer is the pin type force transducer.
Described bindiny mechanism comprises first web member that is connected or is made as one with the described first pull bar halfbody, be connected or be made as second web member of one with the described second pull bar halfbody, at least two bearing pins are fixed on described first web member, described bearing pin extends along the direction perpendicular to described vertical vertical plane, described second web member is provided with and the vertical one to one slotted hole of described bearing pin, the length direction of described vertical slotted hole is consistent with the longitudinal direction of described lower link in described vertical vertical plane, and described bearing pin is constrained in described vertical slotted hole; Described installation portion comprises the horizontal slotted hole that is arranged on described second web member, the length direction of described horizontal slotted hole is vertical with the length direction of described vertical slotted hole in described vertical vertical plane, and described pin type force transducer is fixed on described first web member and is constrained in the described horizontal slotted hole.
As another kind of optimized technical scheme, described force transducer is a S type pulling force sensor.
Described bindiny mechanism comprises first web member that is connected or is made as the fork-shaped of one with the described first pull bar halfbody, be connected or be made as second web member of one with the described second pull bar halfbody, described second web member is plugged in described first web member, at least two bearing pins are fixed on described first web member, described bearing pin extends along the direction perpendicular to described vertical vertical plane, described second web member is provided with and the vertical one to one slotted hole of described bearing pin, the length direction of described vertical slotted hole is consistent with the longitudinal direction of described lower link in described vertical vertical plane, and described bearing pin is constrained in described vertical slotted hole; Described installation portion comprises first installation portion that is arranged on described first web member and second installation portion that is arranged on described second web member, and it is hinged that the two ends of described S type pulling force sensor are passed through a connecting link and described first installation portion and second installation portion respectively.
Described first installation portion comprises first jointed shaft that is fixed on described first web member, described second installation portion comprises second jointed shaft that is fixed on described second web member, and described first jointed shaft, described second jointed shaft and described bearing pin be arranged in parallel.
After having adopted technique scheme, the invention has the beneficial effects as follows:
The present invention is with the lower link separated into two parts in traditional tractor hitch, comprise the first pull bar halfbody and the second pull bar halfbody, being provided with between the first pull bar halfbody and the second pull bar halfbody makes both only have the bindiny mechanism of the longitudinal degress of feedom, bindiny mechanism is provided with the installation portion that only vertical component of lower link is passed to force transducer, force transducer is installed on this installation portion, and the first pull bar halfbody and the second pull bar halfbody are fixed together by bindiny mechanism and force transducer.Because bindiny mechanism makes the first pull bar halfbody and the second pull bar halfbody only have the longitudinal degress of feedom, thus bindiny mechanism do not bear the lower link longitudinal force, only bear that lower link is subjected to perpendicular to power longitudinally; Because the installation portion that is arranged in the bindiny mechanism only passes to force transducer with vertical component of lower link, so force transducer is not subjected to the influence perpendicular to longitudinal force, can accurately measure the longitudinal force of lower link, and by control gear control plowing resistance.The invention solves when measuring the lower link longitudinal force perpendicular to the influence of the power on the longitudinal direction measurement result, measurement result is accurate, tillage machinery operation under the control mode of exerting all one's strength is more accurate, can not only be used for deep ploughing, also can reach reasonable effect when shallow plowing.
Description of drawings
Fig. 1 is the lower link force analysis synoptic diagram in the tractor hitch;
Fig. 2 is tractor hitch and tillage implements syndeton synoptic diagram;
Fig. 3 is the structural representation of the embodiment of the invention one;
Fig. 4 is an A-A cut-open view among Fig. 3;
Fig. 5 is the structural representation of the embodiment of the invention two;
Fig. 6 is the structural representation of the embodiment of the invention three;
Fig. 7 is a B-B cut-open view among Fig. 6.
Among the figure: 1. lower link, 11. first pull bar halfbodies, 111a. first web member, 111b. first web member, 111c. first web member, 12. second pull bar halfbodies, 121a. second web member, 121b. second web member, 121c. second web member, the horizontal slotted hole of 2a., the horizontal slotted hole of 2b., 3. pin type force transducer, 4. vertical slotted hole, 5. bearing pin, 6.S type pulling force sensor, 7. connecting link, 8. first jointed shaft, 9. second jointed shaft, 101. upper connecting rods, 102. lifting arms, 103. lift arm, 104. tillage implements, N
1. bearing pin acts on the power on the lower link, the power that the P. lift arm applies lower link by lifting arm, F
N. tillage implements acts on the power on the lower link.
Embodiment
As shown in Figure 2, ploughing machinery connects by the tractor rear hitch realizes towage, upper connecting rod 101 in the hitch, lower link 1 end and tillage implements 104 are hinged, and the middle part of lower link 1 is hinged by lifting arm 102 and lift arm 103, and lift arm 103 is connected with control device.
Embodiment one
Shown in Fig. 3 and Fig. 4 are common, a kind of device for measuring longitudinal force of lower pull rod for plowing machine, comprise force transducer, force transducer adopts pin type force transducer 3, this force transducer 3 is installed on the lower link 1 in the tractor hitch, the bearing of trend of definition lower link 1 is vertically, and the vertical plane at the bearing of trend place of lower link 1 is vertical vertical plane.
This lower link 1 comprises the first pull bar halfbody 11 and the second pull bar halfbody 12, being provided with between the first pull bar halfbody 11 and the second pull bar halfbody 12 makes both only have the bindiny mechanism of the longitudinal degress of feedom, in bindiny mechanism, be provided with the installation portion that only vertical component of lower link 1 is passed to force transducer, force transducer 3 is installed on this installation portion, and the first pull bar halfbody 11 and the second pull bar halfbody 12 are fixed together by described bindiny mechanism and force transducer 3.
Described bindiny mechanism comprises the first web member 111a that is connected or is made as one with the first pull bar halfbody 11, is connected or is made as the second web member 121a of one with the second pull bar halfbody 12, wherein, the first web member 111a is a fork configuration, and the second web member 121a stretches among the first web member 111a.At least two bearing pins 5 are fixed on the first web member 111a, present embodiment adopts two bearing pins 5, bearing pin 5 extends along the direction perpendicular to vertical vertical plane, the second web member 121a is provided with and bearing pin 5 two vertical slotted holes 4 one to one, the length direction of this vertical slotted hole 4 is consistent with the longitudinal direction of lower link 1 in vertical vertical plane, and bearing pin 5 is constrained in vertical slotted hole 4.
Described installation portion comprises the horizontal slotted hole 2a that is arranged on the second web member 121a, and the length direction of this horizontal slotted hole 2a is vertical with the length direction of vertical slotted hole 4 in vertical vertical plane, and horizontal slotted hole 2a is positioned at the centre position of two vertical slotted holes 4.Pin type force transducer 3 is fixed in the first web member 111a and goes up and be constrained among the horizontal slotted hole 2a.
Because two bearing pins 5 are fixed on the first web member 111a, and be constrained in the horizontal slotted hole 4 on the second web member 121a, therefore make the first pull bar halfbody 11 and the second pull bar halfbody 12 only have the longitudinal degress of feedom, two bearing pins 5 only bear perpendicular to lower link 1 power longitudinally; And owing to force transducer 3 is fixed on the first web member 111a, and be constrained among the vertical slotted hole 2a on the second web member 121a, have perpendicular to lower link 1 degree of freedom longitudinally, therefore can only bear, can accurately measure the longitudinal force of lower link 1 along lower link 1 power longitudinally.
Embodiment two
As shown in Figure 5, a kind of device for measuring longitudinal force of lower pull rod for plowing machine, comprise force transducer, force transducer adopts pin type force transducer 3, this force transducer 3 is installed on the lower link 1 in the tractor hitch, the bearing of trend of definition lower link 1 is vertically, and the vertical plane at the bearing of trend place of lower link 1 is vertical vertical plane.
This lower link 1 comprises the first pull bar halfbody 11 and the second pull bar halfbody 12, being provided with between the first pull bar halfbody 11 and the second pull bar halfbody 12 makes both only have the bindiny mechanism of the longitudinal degress of feedom, in bindiny mechanism, be provided with the installation portion that only vertical component of lower link 1 is passed to force transducer, force transducer 3 is installed on this installation portion, and the first pull bar halfbody 11 and the second pull bar halfbody 12 are fixed together by described bindiny mechanism and force transducer 3.
Described bindiny mechanism comprises the first web member 111b that is connected or is made as the cover shape of one with the first pull bar halfbody 11, the second web member 121b that is connected or is made as the cylindricality of one with the second pull bar halfbody 12, the second web member 121b is prismatic concrete employing square column type in the present embodiment, can certainly be cylindrical other column construction that waits.The second web member 121b be plugged among the first web member 111b and both shapes suitable.
Described installation portion comprises the horizontal slotted hole 2b that is opened on the second web member 121b, this horizontal slotted hole 2b extends along the direction perpendicular to vertical vertical plane, in vertical vertical plane laterally the length direction of slotted hole 2b perpendicular to lower link 1 vertically, pin type force transducer 3 is fixed in the first web member 111b and goes up and be constrained among the horizontal slotted hole 2b of the second web member 121b.
Because the second web member 121b of square column type is plugged among the first web member 111b of the suitable cover shape of shape, this structure makes win pull bar halfbody 11 and the second pull bar halfbody 12 only have the longitudinal degress of feedom, and the first web member 111b and the second web member 121b only bear perpendicular to lower link 1 power longitudinally; And go up and be constrained among the horizontal slotted hole 2b of the second web member 121b owing to pin type force transducer 3 is fixed in the first web member 111b, have perpendicular to lower link 1 degree of freedom longitudinally, therefore can only bear along lower link 1 power longitudinally, can accurately measure the longitudinal force of lower link 1.
Embodiment three
Shown in Fig. 6 and Fig. 7 are common, a kind of longitudinal force of lower pull rod for plowing machine device, comprise force transducer, this force transducer adopts S type pulling force sensor 6, S type pulling force sensor 6 is installed on the lower link 1 in the tractor hitch, the bearing of trend of definition lower link 1 is vertically, and the vertical plane at the bearing of trend place of lower link 1 is vertical vertical plane.
This lower link 1 comprises the first pull bar halfbody 11 and the second pull bar halfbody 12, being provided with between the first pull bar halfbody 11 and the second pull bar halfbody 12 makes both only have the bindiny mechanism of the longitudinal degress of feedom, in bindiny mechanism, be provided with the installation portion that only vertical component of lower link 1 is passed to force transducer, S type pulling force sensor 6 is installed on this installation portion, and the first pull bar halfbody 11 and the second pull bar halfbody 12 are fixed together by described bindiny mechanism and S type pulling force sensor 6.
Described bindiny mechanism comprises the first web member 111c that is connected or is made as the fork-shaped of one with the first pull bar halfbody 11, the second web member 121c that is connected or is made as one with the second pull bar halfbody 12, the second web member 121c is plugged among the first web member 111c, at least two bearing pins 5 are fixed on the first web member 111c, present embodiment adopts two bearing pins 5, two bearing pins 5 extend along the direction perpendicular to vertical vertical plane, on the second web member 121c, be provided with and the vertical one to one slotted hole 4 of two bearing pins 5, the length direction of this vertical slotted hole 4 is consistent with the longitudinal direction of lower link 1 in vertical vertical plane, and bearing pin 5 is constrained in vertical slotted hole 4.
Described installation portion comprises first installation portion that is arranged on the first web member 111c and second installation portion that is arranged on the second web member 121c, and it is hinged that the two ends of S type pulling force sensor 6 are passed through a connecting link 7 and first installation portion and second installation portion respectively.Described first installation portion comprises first jointed shaft 8 that is fixed on the first web member 111c, and described second installation portion comprises that second jointed shaft, 9, the first jointed shafts 8, second jointed shaft 9 that is fixed on the second web member 121c be arranged in parallel with bearing pin 5.
Because two bearing pins 5 are fixed on the first web member 111c, and be constrained in the horizontal slotted hole 4 on the second web member 121c, therefore make the first pull bar halfbody 11 and the second pull bar halfbody 12 only have the longitudinal degress of feedom, two bearing pins 5 only bear perpendicular to lower link 1 power longitudinally; And because S type pulling force sensor 6 two ends are hinged by first installation portion and second installation portion on the second web member 121c on a connecting link 7 and the first web member 111c respectively, therefore do not bear perpendicular to lower link 1 power longitudinally, only bear along lower link 1 power longitudinally, can accurately measure the longitudinal force of lower link 1.
The foregoing description only is giving an example of the specific embodiment of the invention, and protection scope of the present invention is as the criterion with the content of claim.For example: force transducer of a great variety; the present invention is only to two kinds of force transducers: pin type force transducer and S type pulling force sensor; reaching bindiny mechanism corresponding with it and installation portion explains; but being not limited to, protection scope of the present invention uses these two kinds of force transducers; it can be the force transducer of known other pattern; as long as satisfying to be provided with between the first pull bar halfbody and the second pull bar halfbody makes both only have the bindiny mechanism of the longitudinal degress of feedom; described bindiny mechanism is provided with the installation portion that only vertical component of lower link is passed to described force transducer; reach identical result of use, just within protection scope of the present invention.In a word, any equivalent transformation that carries out based on technology enlightenment of the present invention is all within protection scope of the present invention.
Claims (9)
1. device for measuring longitudinal force of lower pull rod for plowing machine comprises
Force transducer, described force transducer are installed on the lower link in the tractor hitch, and the bearing of trend of described lower link is vertically, and the vertical plane at the bearing of trend place of described lower link is vertical vertical plane; It is characterized in that:
Described lower link comprises the first pull bar halfbody and the second pull bar halfbody, being provided with between described first pull bar halfbody and the described second pull bar halfbody makes both only have the bindiny mechanism of the longitudinal degress of feedom, described bindiny mechanism is provided with the installation portion that only vertical component of lower link is passed to described force transducer, described force transducer is installed on the described installation portion, and described first pull bar halfbody and the described second pull bar halfbody are fixed together by described bindiny mechanism and described force transducer.
2. device for measuring longitudinal force of lower pull rod for plowing machine as claimed in claim 1 is characterized in that: described force transducer is the pin type force transducer.
3. device for measuring longitudinal force of lower pull rod for plowing machine as claimed in claim 2 is characterized in that:
Described bindiny mechanism comprises first web member that is connected or is made as one with the described first pull bar halfbody, be connected or be made as second web member of one with the described second pull bar halfbody, at least two bearing pins are fixed on described first web member, described bearing pin extends along the direction perpendicular to described vertical vertical plane, described second web member is provided with and the vertical one to one slotted hole of described bearing pin, the length direction of described vertical slotted hole is consistent with the longitudinal direction of described lower link in described vertical vertical plane, and described bearing pin is constrained in described vertical slotted hole;
Described installation portion comprises the horizontal slotted hole that is arranged on described second web member, the length direction of described horizontal slotted hole is vertical with the length direction of described vertical slotted hole in described vertical vertical plane, and described pin type force transducer is fixed on described first web member and is constrained in the described horizontal slotted hole.
4. device for measuring longitudinal force of lower pull rod for plowing machine as claimed in claim 3 is characterized in that: described first web member is a fork configuration.
5. device for measuring longitudinal force of lower pull rod for plowing machine as claimed in claim 2, it is characterized in that: described bindiny mechanism comprises first web member that is connected or is made as the cover shape of one with the described first pull bar halfbody, be connected or be made as second web member of the cylindricality of one with the described second pull bar halfbody, described second web member be plugged in described first web member and both shapes suitable;
Described installation portion comprises the horizontal slotted hole that is opened on described second web member, described horizontal slotted hole extends along the direction perpendicular to described vertical vertical plane, in described vertical vertical plane the length direction of described horizontal slotted hole perpendicular to described lower link vertically, described pin type force transducer is fixed on described first web member and is constrained in the horizontal slotted hole of described second web member.
6. device for measuring longitudinal force of lower pull rod for plowing machine as claimed in claim 5 is characterized in that: described second web member is prismatic.
7. device for measuring longitudinal force of lower pull rod for plowing machine as claimed in claim 1 is characterized in that: described force transducer is a S type pulling force sensor.
8. device for measuring longitudinal force of lower pull rod for plowing machine as claimed in claim 7, it is characterized in that: described bindiny mechanism comprises first web member that is connected or is made as the fork-shaped of one with the described first pull bar halfbody, be connected or be made as second web member of one with the described second pull bar halfbody, described second web member is plugged in described first web member, at least two bearing pins are fixed on described first web member, described bearing pin extends along the direction perpendicular to described vertical vertical plane, described second web member is provided with and the vertical one to one slotted hole of described bearing pin, the length direction of described vertical slotted hole is consistent with the longitudinal direction of described lower link in described vertical vertical plane, and described bearing pin is constrained in described vertical slotted hole;
Described installation portion comprises first installation portion that is arranged on described first web member and second installation portion that is arranged on described second web member, and it is hinged that the two ends of described S type pulling force sensor are passed through a connecting link and described first installation portion and described second installation portion respectively.
9. device for measuring longitudinal force of lower pull rod for plowing machine as claimed in claim 8, it is characterized in that: described first installation portion comprises first jointed shaft that is fixed on described first web member, described second installation portion comprises second jointed shaft that is fixed on described second web member, and described first jointed shaft, described second jointed shaft and described bearing pin be arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101624362A CN101846566B (en) | 2010-04-27 | 2010-04-27 | Device for measuring longitudinal force of lower pull rod for plowing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101624362A CN101846566B (en) | 2010-04-27 | 2010-04-27 | Device for measuring longitudinal force of lower pull rod for plowing machine |
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| CN101846566B CN101846566B (en) | 2011-08-10 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103323160A (en) * | 2012-03-19 | 2013-09-25 | 现代农装科技股份有限公司 | Suspension device for hooking agricultural implement |
| CN103616096A (en) * | 2013-11-29 | 2014-03-05 | 东北农业大学 | Subsoiler stress testing device |
| CN108496443A (en) * | 2018-06-11 | 2018-09-07 | 南京农业大学 | A kind of force transfering device of horticultural tractor suspension upper connecting rod |
| CN108844666A (en) * | 2018-05-14 | 2018-11-20 | 南京农业大学 | A kind of tractor suspension device for measuring force |
| JP2020511664A (en) * | 2017-03-22 | 2020-04-16 | メソッド・エレクトロニクス・マルタ・リミテッド | Magneto-elastic sensor assembly |
| CN112729651A (en) * | 2021-04-02 | 2021-04-30 | 博鼎精工智能科技(山东)有限公司 | Shaft pin type force sensor, agricultural machinery suspension device and soil resistance measuring method |
| WO2021238403A1 (en) * | 2020-05-26 | 2021-12-02 | 石家庄五龙制动器股份有限公司 | Braking torque sensor for brake |
| CN114729831A (en) * | 2019-10-21 | 2022-07-08 | 美蓓亚三美株式会社 | Load detection mechanism and pin type load sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114729831A (en) * | 2019-10-21 | 2022-07-08 | 美蓓亚三美株式会社 | Load detection mechanism and pin type load sensor |
| WO2021238403A1 (en) * | 2020-05-26 | 2021-12-02 | 石家庄五龙制动器股份有限公司 | Braking torque sensor for brake |
| US11725705B2 (en) | 2020-05-26 | 2023-08-15 | Shijiazhuang Wulong Brake Corporation | Braking torque sensor of brake |
| CN112729651B (en) * | 2021-04-02 | 2021-07-30 | 博鼎精工智能科技(山东)有限公司 | Shaft pin type force sensor, agricultural machinery suspension device and soil resistance measuring method |
| CN112729651A (en) * | 2021-04-02 | 2021-04-30 | 博鼎精工智能科技(山东)有限公司 | Shaft pin type force sensor, agricultural machinery suspension device and soil resistance measuring method |
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| CN101846566B (en) | 2011-08-10 |
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