CN111855058A - Suspension type agricultural implement measuring force device - Google Patents
Suspension type agricultural implement measuring force device Download PDFInfo
- Publication number
- CN111855058A CN111855058A CN202010896303.1A CN202010896303A CN111855058A CN 111855058 A CN111855058 A CN 111855058A CN 202010896303 A CN202010896303 A CN 202010896303A CN 111855058 A CN111855058 A CN 111855058A
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- Prior art keywords
- pull rod
- sensor
- agricultural implement
- tractor
- suspension arm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Agricultural Machines (AREA)
Abstract
A suspended force measuring device for agricultural implements belongs to the field of agricultural machinery. The agricultural machinery comprises an upper pull rod, a lower pull rod, an upper suspension arm hinge seat, a lower suspension arm hinge seat, a horizontal inclination angle sensor, a strain type upper shaft pin sensor and a strain type lower shaft pin sensor, wherein the upper suspension arm hinge seat and the lower suspension arm hinge seat are respectively and fixedly arranged on agricultural machinery, one end of the upper pull rod is hinged on a tractor, the other end of the upper pull rod is hinged on the upper suspension arm hinge seat through the strain type upper shaft pin sensor, one end of the lower pull rod is hinged on the tractor, the other end of the lower pull rod is hinged on the lower suspension arm hinge seat through the strain type lower shaft pin sensor, and the horizontal inclination angle sensor is arranged on the upper pull rod and the lower pull rod. The invention aims to solve the problem that the existing suspension type agricultural implement cannot perform data feedback in time according to actual operation conditions, and the suspension type agricultural implement has the advantages of simple structure, ingenious design, convenience in disassembly and assembly, firmness in assembly and suitability for popularization and use.
Description
Technical Field
The invention relates to a suspended agricultural machinery force measuring device, and belongs to the field of agricultural machinery.
Background
China is a big agricultural country, the mechanization level of agricultural cultivation and harvest in 2019 reaches 70%, and the method becomes a main mode of agricultural production. At present, most agricultural machinery in China is mainly driven by a tractor, a suspended agricultural implement is common agricultural machinery, the suspended agricultural implement is in spherical hinge connection with the tail ends of an upper pull rod and a lower pull rod of a hydraulic suspension mechanism of the tractor through 3 suspension points on a suspension frame, and the suspension device is called three-point suspension type, cannot perform timely operation resistance data feedback according to the actual operation condition of the agricultural implement, knows the operation performance of the agricultural implement, and improves the performance; meanwhile, agricultural implements cannot be selected and used in a targeted manner according to actual soil operation conditions, the matching reasonability, the operation efficiency and the service life of the unit are improved, the operation energy consumption is reduced, the production cost is saved, and the damage to the agricultural implements is avoided.
When the suspended agricultural implement works in the field, the suspended agricultural implement vibrates and fluctuates due to the influences of uneven ground surface, large change of soil firmness and the like, so that the stress pin shaft sensor arranged at the hinged point of the tractor and the suspended agricultural implement rotates, the measurement accuracy of the working resistance is seriously influenced, and even the measurement cannot be carried out.
Therefore, a suspended agricultural machinery force measuring device is needed to solve the above technical problems.
Disclosure of Invention
The present invention has been developed in order to solve the problem of prior art suspended agricultural implements that do not allow for timely data feedback based on actual work conditions, and a brief summary of the invention is provided below to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
the utility model provides a suspension type agricultural machinery measuring force device, including last pull rod, the lower link, go up the articulated seat of suspension arm, hang the articulated seat of arm down, horizontal tilt angle sensor, strain-type upper journal pin sensor and strain-type lower axle pin sensor, go up the articulated seat of suspension arm and hang the articulated seat of arm down respectively fixed mounting on agricultural machinery, go up pull rod one end and articulate on the tractor, the go up the pull rod other end and articulate through strain-type upper journal pin sensor and install on hanging the articulated seat of arm last, lower link one end articulates on tractor (8), the lower link other end is through the articulated installation of strain-type lower axle pin sensor hanging the articulated seat of arm down on, horizontal tilt angle sensor installs on last pull rod and lower link.
Preferably: the strain type upper shaft pin sensor and the strain type lower shaft pin sensor are respectively provided with a positioning pull rod mounting hole, the middle parts of the upper pull rod and the lower pull rod are respectively provided with a positioning pull rod fixing hole, one end of the positioning pull rod is hinged and mounted in the positioning pull rod fixing hole, and the other end of the positioning pull rod is fixedly mounted in the positioning pull rod mounting hole.
Preferably: one end of the positioning pull rod is in a straight hook shape, the other end of the positioning pull rod is in a vertical shape, one end of the straight hook shape of the positioning pull rod is hinged and installed in the positioning pull rod installation hole, and one end of the vertical shape of the positioning pull rod is fixed and installed in the positioning pull rod fixing hole.
Preferably: the tractor further comprises a force measurement display, the force measurement display is mounted on the tractor, and the force measurement display is electrically connected with the horizontal inclination angle sensor, the strain type upper shaft pin sensor and the strain type lower shaft pin sensor.
The utility model provides a suspension type agricultural machinery measuring force device which characterized in that: the measurement method is as follows:
step 4, two lower pull rods are provided, and the tension values S borne by the two lower pull rods are acquired through the strain type lower shaft pin sensors on the two lower pull rods1And S2；
Step 7, the operating resistance of the agricultural implement is the same as the tension value of the tractor, the horizontal direction stress of the upper pull rod is pressure when the tractor operates, and the direction is opposite to the advancing direction of the tractor; when the agricultural implement works, the horizontal direction of the lower pull rod is stressed into pulling force, and the direction of the lower pull rod is the same as the advancing direction of the tractor;
the operation resistance of the agricultural implement is the resultant force F in the horizontal direction, and the operation resistance F is obtained, wherein F is S1cosβ+S2cosβ－Ncosα。
In order to solve the problems that the measurement precision of the operation resistance is seriously influenced and even the measurement cannot be carried out because a stress pin shaft sensor arranged at the hinged point of a tractor and a suspended agricultural implement rotates, the invention provides the technical scheme that:
the utility model provides a suspension type agricultural machinery measuring force device, including last pull rod, the lower link, go up the articulated seat of suspension arm, hang the articulated seat of arm down, horizontal tilt angle sensor, strain-type upper journal pin sensor and strain-type lower axle pin sensor, go up the articulated seat of suspension arm and hang the articulated seat of arm down respectively fixed mounting on agricultural machinery, it articulates on the tractor to go up pull rod one end, the go up the pull rod other end and articulate through strain-type upper journal pin sensor and install on hanging the articulated seat of arm last, lower link one end articulates on the tractor, the lower link other end is through the articulated installation of strain-type lower axle pin sensor hanging the articulated seat of arm down on, horizontal tilt angle sensor installs on last pull rod and lower link.
Preferably: the strain type upper shaft pin sensor and the strain type lower shaft pin sensor are respectively provided with a positioning pull rod mounting hole, the middle parts of the upper pull rod and the lower pull rod are respectively provided with a positioning pull rod fixing hole, one end of the positioning pull rod is hinged and mounted in the positioning pull rod fixing hole, and the other end of the positioning pull rod is fixedly mounted in the positioning pull rod mounting hole.
Preferably: one end of the positioning pull rod is in a straight hook shape, the other end of the positioning pull rod is in a vertical shape, one end of the straight hook shape of the positioning pull rod is hinged and installed in the positioning pull rod installation hole, and one end of the vertical shape of the positioning pull rod is fixed and installed in the positioning pull rod fixing hole.
Preferably: the tractor further comprises a force measurement display, the force measurement display is mounted on the tractor, and the force measurement display is electrically connected with the horizontal inclination angle sensor, the strain type upper shaft pin sensor and the strain type lower shaft pin sensor.
The invention has the following beneficial effects:
1. the positioning pull rod can prevent the stress type pin shaft sensor from rotating during the operation of the suspended agricultural implement, and ensure the accurate measurement of the stress type pin shaft sensor;
2. the invention relates to a suspension type agricultural machinery force measuring device, which solves the problems that three-point suspension type agricultural machinery has multiple types, various suspension arm structures and poor installation and measurement;
3. the force measuring device of the suspended agricultural machine can display the stress change of the suspended agricultural machine during operation in real time, and is very important for design research of the agricultural machine and operation economic benefit analysis;
4. according to the force measuring device for the suspension type agricultural machine, the soil condition can be judged according to the stress change of the suspension type agricultural machine during operation, which is measured and displayed, and the specific model of the agricultural machine is reasonably selected, so that the operation efficiency is improved, and the service life of the agricultural machine is prolonged;
5. the suspension type agricultural machinery force measuring device is simple in structure, ingenious in design, convenient to disassemble and assemble, firm in assembly and suitable for popularization and use.
Drawings
FIG. 1 is a block diagram of a suspended agricultural force measuring device;
FIG. 2 is a top view of a suspended agricultural force measuring device;
FIG. 3 is a block diagram of a strain-type upper pin sensor;
FIG. 4 is a block diagram of a positioning pull rod;
in the figure, 1-an upper pull rod, 2-a lower pull rod, 3-an upper suspension arm hinge seat, 4-a lower suspension arm hinge seat, 5-a horizontal tilt angle sensor, 6-a strain type upper shaft pin sensor, 7-a strain type lower shaft pin sensor, 8-a tractor, 9-an agricultural implement, 10-a positioning pull rod, 11-a force measuring display, 101-a positioning pull rod mounting hole and 102-a positioning pull rod fixing hole.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The connection mentioned in the invention is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection and includes but is not limited to folding edge connection, rivet connection, bonding connection, welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to threaded connection, snap connection, pin connection, hinge connection and other conventional detachment modes, when the specific connection mode is not clearly limited, at least one connection mode can be found in the existing connection modes by default to realize the function, and the skilled person can select according to the needs. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.
The first embodiment is as follows: the embodiment is described by combining fig. 1-4, and the suspension type agricultural machinery force measuring device of the embodiment comprises an upper pull rod 1, a lower pull rod 2, an upper suspension arm hinge seat 3, a lower suspension arm hinge seat 4, a horizontal inclination angle sensor 5, a strain type upper shaft pin sensor 6 and a strain type lower shaft pin sensor 7, wherein the upper suspension arm hinge seat 3 and the lower suspension arm hinge seat 4 are respectively and fixedly arranged on an agricultural machinery 9, one end of the upper pull rod 1 is hinged on a tractor 8, the other end of the upper pull rod 1 is hinged on the upper suspension arm hinge seat 3 through the strain type upper shaft pin sensor 6, one end of the lower pull rod 2 is hinged on the tractor, the other end of the lower pull rod 2 is hinged on the lower suspension arm hinge seat 4 through the strain type lower shaft pin sensor 7, the horizontal inclination angle sensor 5 is arranged on the upper pull rod 1 and the lower pull rod 2 and is used for measuring the three-point suspension type plough matched with the tractor, The operation resistance of agricultural implements such as subsoilers, fertilizing machines, seeding machines and the like, and the strain type upper shaft pin sensor 6 and the strain type lower shaft pin sensor 7 are force measuring parts and can measure the resistance of three-point suspension type agricultural implements during operation.
The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, and based on the first embodiment, the force measuring device of a suspended agricultural machine of the embodiment further includes a positioning pull rod 10, positioning pull rod mounting holes 101 are respectively processed on the strain type upper pin sensor 6 and the strain type lower pin sensor 7, positioning pull rod fixing holes 102 are respectively processed in the middle parts of the upper pull rod 1 and the lower pull rod 2, one end of the positioning pull rod 10 is hinged in the positioning pull rod fixing hole 102, the other end of the positioning pull rod 10 is fixedly mounted in the positioning pull rod mounting hole 101, when the suspended agricultural machine works in the field, due to the influences of uneven ground surface, large change of soil firmness and the like, the suspended agricultural implement vibrates and fluctuates, so that the stress pin shaft sensor arranged at the hinged point of the tractor 8 and the agricultural implement 9 rotates, the measurement accuracy of the operation resistance is seriously influenced, and even the measurement cannot be carried out. By using the positioning pull rod 10, the strain type upper shaft pin sensor 6 and the strain type lower shaft pin sensor 7 can be prevented from rotating during the operation of the agricultural implement 9, and the accurate measurement of the strain type upper shaft pin sensor 6 and the strain type lower shaft pin sensor 7 is ensured. The end of the positioning pull rod 10, which is inserted into the strain type upper shaft pin sensor 6 and the end of the strain type lower shaft pin sensor 7, is provided with a through hole for mounting a U-shaped clamp so as to prevent the positioning pull rod 10 from falling out of the positioning pull rod mounting hole 101.
The third concrete implementation mode: the embodiment is described with reference to fig. 1 to 4, and based on the first embodiment, the first embodiment is a suspension type agricultural machinery force measuring device, one end of the positioning pull rod 10 is a straight hook type, the other end of the positioning pull rod 10 is a vertical type, one end of the straight hook type of the positioning pull rod 10 is hinged and installed in the positioning pull rod installation hole 101, one end of the vertical type of the positioning pull rod 10 is fixed and installed in the positioning pull rod fixing hole 102, and the positioning pull rod 10 ensures that the stress direction of the stress type upper pin shaft sensor is consistent with the pressure direction of the upper suspension pull rod, so that the stress type upper pin shaft sensor is prevented from rotating to influence the measurement accuracy of the operation resistance during the operation of an agricultural implement.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 4, and the suspension type agricultural machinery force measuring device of the embodiment further comprises a force measuring display 11, wherein the force measuring display 11 is mounted on the tractor 8, the force measuring display 11 is electrically connected with the horizontal tilt angle sensor 5, the strain type upper axle pin sensor 6 and the strain type lower axle pin sensor 7, and measured values are directly displayed on the force measuring display 11, so that visual observation during operation is facilitated.
The fifth concrete implementation mode: the embodiment is described with reference to fig. 1 to 4, and the measurement method of the suspension type agricultural machinery force measuring device of the embodiment is as follows:
step 4, two lower pull rods 2 are adopted, and the tension values S borne by the two lower pull rods 2 are acquired through the strain type lower shaft pin sensors 7 on the two lower pull rods 21And S2；
Step 7, the operating resistance of the agricultural implement 9 is the same as the tension value of the tractor 8, the horizontal direction stress of the upper pull rod 1 is pressure when the tractor 8 operates, and the direction is opposite to the advancing direction of the tractor 8; when the agricultural implement 9 works, the horizontal direction of the lower pull rod 2 is stressed into pulling force, and the direction is the same as the advancing direction of the tractor 8;
therefore, the operation resistance of the agricultural implement 9 is the resultant force F in the horizontal direction, and the operation resistance of the agricultural implement 9 is obtained as F, wherein F is S1cosβ+S2cosβ－Ncosα；
The obtained operation resistance F of the agricultural implement 9 is displayed on the force measuring display 11.
It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore, the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (5)
1. The utility model provides a suspension type agricultural implement measuring force device which characterized in that: comprises an upper pull rod (1), a lower pull rod (2), an upper suspension arm hinging seat (3), a lower suspension arm hinging seat (4), a horizontal tilt angle sensor (5), a strain type upper shaft pin sensor (6) and a strain type lower shaft pin sensor (7), go up articulated seat (3) of suspension arm and hang articulated seat (4) of arm down and hang respectively fixed mounting on agricultural implement (9), go up pull rod (1) one end and articulate on tractor (8), go up pull rod (1) other end and articulate through strain type upper journal sensor (6) and install on last articulated seat (3) of suspension arm, pull rod (2) one end articulates on tractor (8) down, pull rod (2) other end is through strain type lower pivot sensor (7) articulated installation under on articulated seat (4) of suspension arm down, horizontal tilt angle sensor (5) are installed on last pull rod (1) and pull rod (2).
2. The suspended agricultural implement force measuring device of claim 1, wherein: still including location pull rod (10), processing respectively on pivot sensor (6) on the strain gauge and pivot sensor (7) under the strain gauge has location pull rod mounting hole (101), and it has location pull rod fixed orifices (102) to go up pull rod (1) and pull down link (2) middle part processing respectively, and location pull rod (10) one end is articulated to be installed in location pull rod fixed orifices (102), and location pull rod (10) other end fixed mounting is in location pull rod mounting hole (101).
3. The suspended agricultural implement force measuring device of claim 2, wherein: one end of the positioning pull rod (10) is in a straight hook shape, the other end of the positioning pull rod (10) is in a vertical shape, one end of the straight hook shape of the positioning pull rod (10) is hinged and installed in the positioning pull rod installation hole (101), and the fixed end of the vertical shape of the positioning pull rod (10) is installed in the positioning pull rod fixing hole (102).
4. The suspended agricultural implement force measuring device of claim 1, wherein: the tractor further comprises a force measurement display (11), the force measurement display (11) is installed on the tractor (8), and the force measurement display (11) is electrically connected with the horizontal inclination angle sensor (5), the strain type upper shaft pin sensor (6) and the strain type lower shaft pin sensor (7).
5. A suspended farm implement force measuring device as claimed in claims 1 to 3, wherein: the measurement method is as follows:
step 1, a tractor (8) drives an agricultural implement (9) to move, a stress type upper pin shaft sensor (6) is used for collecting a pressure value N borne by an upper pull rod (1),
step 2, acquiring an included angle alpha between the upper pull rod (1) and the horizontal direction through a horizontal tilt angle sensor (5) on the upper pull rod (1);
step 3, obtaining a horizontal pressure value of the upper pull rod (1) as Ncos alpha through the step 1 and the step 2;
step 4, two lower pull rods (2) are adopted, and the tension values S borne by the two lower pull rods (2) are acquired through the strain type lower shaft pin sensors (7) on the two lower pull rods (2)1And S2；
Step 5, acquiring an included angle value beta between the lower pull rod (2) and the horizontal direction through a horizontal tilt angle sensor (5) on the lower pull rod (2);
step 6, obtaining the horizontal direction pressure values S respectively borne by the two lower pull rods (2) through the step 4 and the step 51cos beta and S2cosβ
Step 7, the operation resistance of the agricultural implement (9) is the same as the tension value of the tractor (8), the horizontal direction stress of the upper pull rod (1) is pressure when the agricultural implement (9) operates, and the direction is opposite to the advancing direction of the tractor (8); when the agricultural implement (9) works, the horizontal direction stress of the lower pull rod (2) is tensile force, and the direction is the same as the advancing direction of the tractor (8);
therefore, the operation resistance of the agricultural implement (9) is the resultant force F in the horizontal direction, and the operation resistance F of the agricultural implement (9) is obtained, wherein F is S1cosβ+S2cosβ－Ncosα。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896303.1A CN111855058A (en) | 2020-08-31 | 2020-08-31 | Suspension type agricultural implement measuring force device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896303.1A CN111855058A (en) | 2020-08-31 | 2020-08-31 | Suspension type agricultural implement measuring force device |
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| CN111855058A true CN111855058A (en) | 2020-10-30 |
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| CN202010896303.1A Pending CN111855058A (en) | 2020-08-31 | 2020-08-31 | Suspension type agricultural implement measuring force device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729636A (en) * | 2020-12-28 | 2021-04-30 | 黑龙江省农业机械工程科学研究院 | Device and method for measuring torque, power and efficiency of driving type agricultural implement |
| 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 |
| CN113405702A (en) * | 2021-07-09 | 2021-09-17 | 东北农业大学 | Sensing device for measuring operation resistance of suspended agricultural implement |
| CN113418646A (en) * | 2021-07-09 | 2021-09-21 | 东北农业大学 | Pin shaft type radial force sensor |
| CN113959393A (en) * | 2021-10-13 | 2022-01-21 | 福建省布谷信田农业科技有限公司 | Sensor system for detecting operation condition of working part of agricultural tractor |
-
2020
- 2020-08-31 CN CN202010896303.1A patent/CN111855058A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729636A (en) * | 2020-12-28 | 2021-04-30 | 黑龙江省农业机械工程科学研究院 | Device and method for measuring torque, power and efficiency of driving type agricultural implement |
| 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 |
| 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 |
| CN113405702A (en) * | 2021-07-09 | 2021-09-17 | 东北农业大学 | Sensing device for measuring operation resistance of suspended agricultural implement |
| CN113418646A (en) * | 2021-07-09 | 2021-09-21 | 东北农业大学 | Pin shaft type radial force sensor |
| CN113959393A (en) * | 2021-10-13 | 2022-01-21 | 福建省布谷信田农业科技有限公司 | Sensor system for detecting operation condition of working part of agricultural tractor |
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