Sensor device applied to large straw packaging machine

Abstract

The utility model discloses a sensor device applied to a large straw baler, and belongs to the field of straw balers. The device comprises a sensor, a large arm shell, a connecting rod, a front end connecting seat, a sensor mounting seat and a detection connecting rod base, the front end connecting seat and the sensor mounting seat are mounted at the front end and the rear end of the large arm shell respectively, the sensor is fixedly mounted in the sensor mounting seat through a bolt, and the detection connecting rod base is fixedly mounted in the front end connecting seat through a bolt. The connecting rod is arranged in the big arm shell, and two ends are respectively connected with the detection connecting rod base and the sensor. The utility model aims to solve the problems that the connecting rod sensor component of the existing large straw baler cannot be replaced, or the baling quality is poor and the service life of the connecting rod sensor is short after replacement, and can measure the pressure change borne by the connecting rod in the working process so as to judge whether the connecting rod is in a normal working state or not. Therefore, the problem that the connecting rod is damaged or the bundling effect is poor due to the pressure problem is avoided.

Description

Technical Field

[0001] This utility model relates to a sensor device for use in large straw balers, belonging to the field of straw balers. Background Technology

[0002] With the rapid development of agricultural machinery in my country, the number of large imported straw balers has also increased rapidly. These large balers operate over a wide and dispersed area. During operation, pistons are used to compress the straw from both ends, making the connecting rod sensor connected to the piston crucial. It controls the baling pressure, directly affecting the quality of the baling operation. The connecting rod sensors of straw balers frequently fail due to the surge in workload. Once a sensor fails, the baler cannot operate, requiring immediate on-site replacement. Therefore, developing a convenient and inexpensive connecting rod sensor is of paramount importance.

[0003] Currently, the linkage sensors for large straw balers can only be imported from abroad, as there are no corresponding linkage sensors available domestically. Imported linkage sensors are expensive, have long lead times, and the linkage housings are made of seamed steel pipes, resulting in low housing strength and short linkage lifespan. Furthermore, the electronic sensor components cannot be replaced, or replacement leads to poor baling quality and a short linkage sensor lifespan.

[0004] Therefore, there is an urgent need to develop a new type of sensor device for use in large straw balers to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to solve the problems of existing large straw balers where the connecting rod sensor component cannot be replaced, or where replacement results in poor baling quality and short sensor lifespan. A brief overview of this invention is provided below to offer a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit its scope.

[0006] The technical solution of this utility model:

[0007] A sensor device for use in a large straw baler includes a sensor, a boom housing, a connecting rod, a front connecting seat, a sensor mounting seat, and a detection connecting rod base. The front connecting seat and the sensor mounting seat are respectively installed at the front and rear ends of the boom housing. The sensor is fixedly installed in the sensor mounting seat by bolts. The detection connecting rod base is fixedly installed in the front connecting seat by bolts. The connecting rod is placed inside the boom housing, and its two ends are respectively connected to the detection connecting rod base and the sensor.

[0008] Preferably, the front end connecting seat is connected to the straw baling piston via the first crankshaft, and the detection connecting rod base is in contact with the side of the end of the first crankshaft.

[0009] Preferably, the sensor mounting base is connected to the output end of the hydraulic cylinder via a second crankshaft.

[0010] Preferably, the space between the boom housing and the connecting rod is filled with a connecting rod support and fixing layer.

[0011] Preferably, the connecting rod is a rigid connecting rod.

[0012] Preferably, the boom shell is a seamless steel shell.

[0013] Preferably, the connecting rod support fixing layer is a polyurethane foam layer formed after the foaming adhesive has cured.

[0014] Preferably, the detection connecting rod base is placed inside the front connecting seat, and one end of the detection connecting rod base is fixedly connected to the connecting rod, while the other end is fixedly installed on the front connecting seat by bolts. At the same time, the end face of the other end of the detection connecting rod base is tightly fitted to the side of the end of the first crankshaft.

[0015] Preferably, the sensor is fixedly installed in the sensor mounting base by bolts.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model can measure the pressure change that the connecting rod bears during operation, thereby determining whether the connecting rod is in normal working condition and whether it is bearing excessive or abnormal pressure, thus avoiding damage to the connecting rod or poor bundling effect due to pressure problems;

[0018] 2. The components of this utility model are durable, adaptable to the complex working conditions of straw balers, have strong anti-interference capabilities, reduce the occurrence of failures, and lower maintenance costs;

[0019] 3. This utility model can feed back the linkage information to the control system in real time through sensors, which makes it easy for operators to grasp the equipment operating status in a timely manner, make quick adjustments, and ensure the efficient operation of the baler;

[0020] 4. This utility model is applicable to large imported straw balers, which are connected to an automatic control system via sensors, and the automatic control system controls the hydraulic cylinders;

[0021] 5. This utility model uses the actual pressure value sensed by the sensor to compare the values ​​with the control system, thereby eliminating sensor malfunctions and ensuring accurate pressure operating range.

[0022] 6. The boom shell of this utility model is made of seamless steel shell, which has high strength. The connecting rod support fixing layer filled in the cavity has high strength, effectively extending the service life of the device. It is also low in cost and more practical. Attached Figure Description

[0023] Figure 1 This is a 3D view of a sensor device used in large straw balers;

[0024] Figure 2 This is a diagram showing the installation of a sensor device used in large straw balers;

[0025] Figure 3 This is a usage status diagram of a sensor device applied to a large straw baler;

[0026] Figure 4 This is a schematic diagram of the sensor structure;

[0027] Figure 5 This is a diagram showing the assembly of the circuit board and the magnet.

[0028] In the diagram: 1-Sensor, 2-Arm housing, 3-Connecting rod, 4-Front-end connector, 5-Sensor mounting base, 6-Detection connecting rod base, 7-First crankshaft, 8-Straw baling piston, 9-Second crankshaft, 10-Hydraulic cylinder, 11-Connecting rod support fixing layer, 12-Sensor housing, 13-Magnet, 14-Plastic top column, 15-Spring, 16-Circuit board, 17-Pressure cap. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0030] The connections mentioned in this utility model are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as threaded connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can always be found to achieve the function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a hinged connection can be chosen for detachable connections.

[0031] Specific implementation method one: Combining Figures 1-5This embodiment describes a sensor device applied to a large straw baler, comprising a sensor 1, a boom housing 2, a connecting rod 3, a front connecting seat 4, a sensor mounting seat 5, and a detection connecting rod base 6. The front connecting seat 4 and the sensor mounting seat 5 are respectively installed at the front and rear ends of the boom housing 2. The sensor 1 is installed inside the sensor mounting seat 5, and the detection connecting rod base 6 is installed inside the front connecting seat 4. The connecting rod 3 is placed inside the boom housing 2, and its two ends are respectively connected to the detection connecting rod base 6 and the sensor 1.

[0032] The front connecting seat 4 is connected to the straw baling piston 8 via the first crankshaft 7, and the detection connecting rod base 6 is fitted to the side of the end of the first crankshaft 7. The sensor mounting seat 5 is connected to the output end of the hydraulic cylinder 10 via the second crankshaft 9.

[0033] During the compression stage, the hydraulic cylinder 10 transmits pressure to the front first crankshaft 7 through the boom housing 2, and the front crankshaft 7 then transmits it to the straw baling piston 8 to compress the straw blocks.

[0034] During the feedback phase, the actual squeezing reaction force generated by the straw baling piston 8 is transmitted to the detection connecting rod 3 via the first crankshaft 7, and the pressure parameters are converted by the sensor 1 and transmitted to the automatic control system via cable.

[0035] The boom housing 2 is a hollow shell structure made of seamless steel. The connecting rod 3 passes through the hollow cavity of the boom connecting rod housing 2, and a support and fixing layer 11 is filled between the inside of the boom housing 2 and the connecting rod 3.

[0036] The connecting rod 3 is a rigid connecting rod.

[0037] The connecting rod support fixing layer 11 is a polyurethane foam layer formed after the foaming adhesive has been cured.

[0038] The detection connecting rod base 6 is placed inside the front connecting seat 4, and one end of the detection connecting rod base 6 is fixedly connected to the connecting rod 3, while the other end is fixedly installed on the front connecting seat 4 by bolts. At the same time, the end face of the other end of the detection connecting rod base 6 is tightly fitted to the side of the end of the first crankshaft 7.

[0039] The sensor 1 is fixedly installed in the sensor mounting base 5 by bolts. The measuring end of the sensor 1 falls into the hollow cavity of the boom connecting rod housing 2. The detection connecting rod base 6 is fixedly installed in the front connecting base 4 by bolts.

[0040] The sensor 1 measures the squeezing reaction force applied to the straw baling piston 8 via the connecting rod 3.

[0041] The sensor 1 is a pressure sensor, and its measuring end is in contact with the end face of the connecting rod 3. The first crankshaft 7 applies the squeezing reaction force from the straw baling piston 8 to the detection connecting rod base 6. The detection connecting rod base 6 transmits the squeezing reaction force to the measuring end of the sensor 1 through the connecting rod 3. Then, the sensor 1 converts the squeezing reaction force into a frequency through the coil on the circuit board 16 and sends it to the automatic control system. The automatic control system then compares the pressure conversion value of the real-time transmitted squeezing reaction force with the preset set value. If a deviation occurs, the automatic control system adjusts the output pressure of the hydraulic cylinder 10 to increase or decrease the actual pressure value of the straw baling piston 8 until the pressure fed back to the automatic control system matches the set value and ensures that the pressure on both sides is the same, ensuring that this process is carried out automatically and dynamically.

[0042] The sensor 1 includes a sensor housing 12, a magnet 13, a plastic top post 14, a spring 15, a circuit board 16, and a pressure cap 17. The pressure cap 17 is installed at the end of the sensor housing 12, and the circuit board 16 is installed inside the sensor housing 12. The circuit board 16 has a through hole in the center to accommodate the magnet 13. The magnet 13 is placed in the through hole of the circuit board 16. One end of the magnet 13 is connected to the spring 15 through the plastic top post 14. The spring 15 is clamped between the plastic top post 14 and the sensor housing 12. The other end of the magnet 13 passes through the central through hole of the circuit board 16 and is tightly connected to the end of the connecting rod 3 that is inserted into the sensor housing 12. The end of the connecting rod 3, the magnet 13, the plastic top post 14, the spring 15, and the pressure cap 17 are sequentially pressed together and compressed by the pressure cap 17.

[0043] The magnet 13 converts the linear change of the connecting rod 3 into a linear inductance change through the circuit board 16. The coil of the circuit board 16 on the sensor 1 detects the linear change of inductance through frequency and sends it to the main control system for comparison with the set value. If a deviation occurs, the pressure transmitted from the boom housing 2 to the straw baling piston 8 is increased or decreased by adjusting the stroke of the hydraulic cylinder 10, thereby achieving intelligent adjustment.

[0044] The baler has two fundamental embodiments. One embodiment describes a sensor device applied to a large straw baler. The baler adjusts the impact force of the straw baling pistons 8 on both sides according to the density of the straw (or bales). The impact force of the straw baling pistons 8 is converted into corresponding inductance through the linear change (linkage displacement) of the connecting rod 3. The sensor 1 detects the linear change of inductance through the coil frequency on the circuit board. After calibration, the sensor device described in this embodiment, applied to a large straw baler, ensures that the force of the connecting rods on both sides is equal and basically the same as the set value, thereby pressing out bales with uniform tension.

[0045] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, this utility model will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by this utility model.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sensor device applied to a large straw baling machine, characterized by: The utility model relates to a sensor (1), a big arm casing (2), a connecting rod (3), a front end connecting seat (4), a sensor mounting seat (5) and a detection connecting rod base (6), the big arm casing (2) front and rear two ends are equipped with the front end connecting seat (4) and the sensor mounting seat (5) respectively, the sensor mounting seat (5) is equipped with the sensor (1) in, the front end connecting seat (4) is equipped with the detection connecting rod base (6) in, the connecting rod (3) is placed in the big arm casing (2) inside, and both ends are connected with the detection connecting rod base (6) and the sensor (1) respectively.

2. The sensor device applied to a large straw baling machine according to claim 1, characterized in that: The front end connecting seat (4) is connected with the straw baling piston (8) through the first crankshaft (7), and the detection connecting rod base (6) is attached to the side surface of the end of the first crankshaft (7).

3. The sensor device for use in a large-scale straw baler according to claim 2, characterized in that The sensor mounting seat (5) is connected with the output end of the hydraulic oil cylinder (10) through the second crankshaft (9).

4. The sensor device applied to a large straw baling machine according to claim 1, characterized in that: The big arm casing (2) is filled with a connecting rod supporting and fixing layer (11) between the inside and the connecting rod (3).

5. The sensor device for use in a large straw baler according to claim 1, characterized in that The connecting rod (3) is a rigid connecting rod.

6. The sensor device for use in a large straw baler according to claim 1, characterized in that The big arm casing (2) is a seamless steel casing.

7. The sensor device for use in a large-scale straw baler according to claim 4, characterized in that: The connecting rod supporting and fixing layer (11) is a polyurethane foam layer formed after foaming glue solidification.

8. The sensor device applied to a large straw baling machine according to claim 2, characterized in that: The detection connecting rod base (6) is placed in the front end connecting seat (4), one end of the detection connecting rod base (6) is fixedly connected with the connecting rod (3), the other end is fixedly installed on the front end connecting seat (4) through bolts, and the end face of the other end of the detection connecting rod base (6) is tightly attached to the end side of the first crankshaft (7).

9. The sensor device for use in a large straw baler according to claim 1, characterized in that: The sensor (1) is fixedly installed in the sensor mounting seat (5) through bolts; The sensor (1) comprises a sensor outer casing (12), a magnet (13), a plastic top column (14), a spring (15), a circuit board (16) and a gland (17), the gland (17) is installed at the end of the sensor outer casing (12), the circuit board (16) is installed in the sensor outer casing (12), the circuit board (16) is provided with a through hole for accommodating the magnet (13) to pass through in the center, the magnet (13) is arranged in the through hole of the circuit board (16), one end of the magnet (13) is connected with the spring (15) through the plastic top column (14), the spring (15) is clamped between the plastic top column (14) and the gland (17), the other end of the magnet (13) passes through the center through hole of the circuit board (16) and is tightly connected with the end of the connecting rod (3) that penetrates into the inside of the sensor outer casing (12).

10. The sensor device for use in a large straw baler according to claim 1, characterized in that The sensor (1) measures the extrusion reaction force applied to the straw baling piston (8) through the connecting rod (3).

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