Device for detecting working state of hay cutter of harvester
By designing a working state detection device for the grass cutter in the rice harvester, the speed of the grass cutter is monitored in real time and alarm is called, the problem of difficulty for the driver to detect in time when the grass cutter load suddenly becomes larger, and the safe operation and operation of the equipment are achieved Improved efficiency.
Patent Information
- Application Number
- CN202420359326.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-27
AI Technical Summary
In rice harvesters, when the load of the grass cutter suddenly increases, it is difficult for the driver to detect and make adjustments in time, resulting in the grass cutter being blocked or the shaft breaks, damaging the equipment and affecting the operating efficiency.
Design a working state detection device for the harvester cutting machine, including a speed sensor and an alarm, to monitor the rotation speed of the cutting machine shaft in real time. When the rotation speed drops abnormally or is below the minimum limit value, the controller controls the alarm system to alarm and shuts down the engine. Remind the driver to check the grass cutter.
It effectively reduces the risk of broken shaft of the grass cutter, extends the service life of the equipment, improves operating efficiency, and ensures that the grass cutter is timely inspected and maintained when the load is too high.
Smart Images
Figure CN222465374U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural equipment, in particular to a working state detection device for a grass cutter of a harvester. Background Art
[0002] Since rice harvesters (harvesters) harvest at different speeds, the rice yields in fields in different regions are also different. During the harvesting operation, it is inevitable that there will be sudden and large changes in the feed amount.
[0003] When the feed amount increases, the amount of straw discharged by the threshing drum to the grass cutter increases, causing the load of the harvester (harvester) grass cutter to suddenly increase. If the driver cannot perceive the change in the load of the grass cutter during actual work and does not make corresponding driving adjustments, the grass cutter will continue to work under high load conditions, which will cause the grass cutter to jam. If the jam is severe, the shaft of the grass cutter will break and other parts will be damaged, causing losses to users and affecting the efficiency of the harvesting operation. Utility Model Content
[0004] The utility model aims to provide a device for detecting the working state of a grass cutter of a harvester, which can monitor the working state of the grass cutter in real time. When the load of the grass cutter becomes large, a controller controls the alarm system to start an alarm to remind the driver to reduce the driving speed or stop harvesting, and continue harvesting after the alarm is lifted and the rotation speed is normal. When the rotation speed of the grass cutter shaft is lower than the minimum limit value, the controller directly controls the engine to stop, which is convenient for the driver to check the grass cutter to prevent the grass cutter from being damaged due to excessive load and affecting the operation, thereby greatly reducing the risk of the grass cutter shaft being broken, which not only prolongs the service life of the equipment, but also greatly improves the operation efficiency.
[0005] The above technical objectives of the utility model are achieved through the following technical solutions:
[0006] A device for detecting the working state of a grass cutter of a harvester comprises a speed sensor for real-time monitoring the rotation speed of a grass cutter shaft and an alarm for alarming abnormal rotation speed of the grass cutter shaft. The speed sensor and the alarm are both electrically connected to a controller.
[0007] By adopting the above technical solution, the speed sensor monitors the speed of the mower in real time during operation. When the load of the mower increases, the speed of the mower shaft will decrease. Therefore, when the speed of the mower shaft suddenly decreases abnormally, the controller controls the alarm system to start the alarm, reminding the driver to reduce the driving speed or stop harvesting, and continue harvesting after the alarm is lifted and the speed returns to normal. When the speed of the mower shaft is lower than the minimum limit, the controller directly controls the engine to stop, which is convenient for the driver to check the mower to prevent the mower from being damaged due to excessive load and affecting the operation. The risk of the mower shaft breaking is greatly reduced, which not only prolongs the service life of the equipment, but also greatly improves the operation efficiency.
[0008] The utility model is further configured as follows: the speed sensor is fixed on the bearing end cover at one end of the grass cutter shaft through a speed sensor bracket, and the sensing contact of the speed sensor is opposite to the circumference of the sensing teeth on the sensing toothed disk fixedly arranged on the grass cutter shaft.
[0009] By adopting the above technical solution, when the induction gear disc rotates synchronously with the grass cutter shaft, each induction tooth on the induction gear disc passes through the induction contact of the speed sensor in turn, so that the speed sensor senses each induction tooth in turn, thereby realizing the speed measurement of the induction gear disc, thereby realizing the real-time monitoring of the grass cutter shaft speed.
[0010] The utility model is further configured as follows: the speed sensor bracket includes a fixed end one for fixing the speed sensor and a fixed end two for fixing the fixed end one on a bearing end cover at one end of a grass cutter shaft, the fixed end one and the fixed end two are integrally formed, the fixed end two is provided with a waist-shaped hole opposite to the fixing screw hole on the bearing end cover at one end of the grass cutter shaft, and the waist-shaped hole is connected to the fixing screw hole by bolts.
[0011] By adopting the above technical scheme, the speed sensor is fixedly connected to the fixed end one and then fixed to the bearing end cover at one end of the grass cutter shaft through the fixed end two, thereby realizing the fixation of the speed sensor. The waist-shaped hole on the fixed end two can adjust the installation position of the fixed end two on the bearing end cover at one end of the grass cutter shaft, thereby realizing the adjustment of the distance between the sensing contact of the speed sensor and each sensing tooth on the sensing tooth disk, so that the distance between the sensing contact of the speed sensor and each sensing tooth on the sensing tooth disk can maintain the optimal distance (generally 2mm), thereby making the measurement accuracy of the speed sensor higher.
[0012] The utility model is further configured as follows: a mounting hole matching the speed sensor is provided on the fixed end, an annular boss matching the speed sensor is fixedly provided on one axial side of the mounting hole, a matching hole matching the fixing hole on the speed sensor is provided on one radial side of the mounting hole, and the mounting hole and the matching hole are connected by bolts.
[0013] By adopting the above technical solution, the speed sensor is matched with the mounting hole, and the matching hole on one radial side of the mounting hole is connected with the fixing hole on the speed sensor through bolts to realize the fixed connection between the speed sensor and the fixed end. The fixing process is simple and easy to operate.
[0014] The utility model is further configured as follows: an annular groove is provided in the annular boss, an elastic gasket is provided in the annular groove, an outer wall of the elastic gasket is tightly matched with the annular groove, and an inner hole of the elastic gasket is tightly matched with the rotation speed sensor.
[0015] By adopting the above technical solution, the annular boss further supports the speed sensor through the elastic washer, so that the speed sensor has better stability after being fixed. At the same time, the elastic washer also has a good shock-absorbing effect, so that the speed sensor is less susceptible to vibration shock during operation, thereby further improving the measurement accuracy and service life of the speed sensor.
[0016] The utility model is further configured as follows: the speed sensor bracket is also fixedly provided with a protective cover, and the sensing contact of the speed sensor and the sensing gear disk fixedly provided on the grass cutter shaft respectively penetrate the speed sensor and the grass cutter shaft and extend into the protective cover.
[0017] By adopting the above technical solution, the protective cover is used to protect the sensing contacts of the speed sensor and the sensing gear disc fixed on the grass cutter shaft, thereby preventing the sensing contacts of the speed sensor and the sensing gear disc fixed on the grass cutter shaft from being damaged by collision, thereby further improving the measurement accuracy and service life of the speed sensor.
[0018] The beneficial effects of the utility model are:
[0019] 1. The utility model uses a speed sensor to monitor the speed of the grass cutter in real time during operation. When the load of the grass cutter increases, the speed of the grass cutter shaft will decrease. Therefore, when the speed of the grass cutter shaft suddenly decreases abnormally, the controller controls the alarm system to start an alarm, reminding the driver to reduce the driving speed or stop harvesting, and continue harvesting after the alarm is lifted and the speed returns to normal. When the speed of the grass cutter shaft is lower than the minimum limit, the controller directly controls the engine to stop, which is convenient for the driver to check the grass cutter to prevent the grass cutter from being damaged due to excessive load and affecting the operation. The risk of the grass cutter shaft breaking is greatly reduced, which not only prolongs the service life of the equipment, but also greatly improves the operating efficiency.
[0020] 2. The waist-shaped hole on the second fixed end of the utility model can adjust the installation position of the second fixed end on the bearing end cover at one end of the grass cutter shaft, thereby realizing the adjustment of the distance between the sensing contact of the speed sensor and each sensing tooth on the sensing gear disc, so that the distance between the sensing contact of the speed sensor and each sensing tooth on the sensing gear disc can be maintained at the optimal distance (generally 2mm), thereby making the measurement accuracy of the speed sensor higher.
[0021] 3. The utility model provides an annular boss and an elastic washer inside the annular boss, so that the speed sensor has better stability after being fixed, and utilizes the good shock-absorbing effect of the elastic washer to reduce the vibration impact received by the speed sensor during operation, thereby further improving the measurement accuracy and service life of the speed sensor.
[0022] 4. The utility model provides a protective cover to protect the sensing contacts of the speed sensor and the sensing toothed disc fixed on the grass cutter shaft, thereby preventing the sensing contacts of the speed sensor and the sensing toothed disc fixed on the grass cutter shaft from being damaged by collision, thereby further improving the measurement accuracy and service life of the speed sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0024] Figure 1 The utility model is a schematic diagram of the installation structure of a rotation speed sensor and an induction gear disc in a device for detecting the working state of a grass cutter of a harvester.
[0025] Figure 2 The utility model is a structural schematic diagram of a rotation speed sensor bracket in a device for detecting the working state of a grass cutter of a harvester.
[0026] Figure 3 The utility model is a structural schematic diagram of a rotation speed sensor in a working state detection device of a grass cutter of a harvester.
[0027] Figure 4 The utility model is a structural schematic diagram of a protective cover in a device for detecting the working state of a grass cutter of a harvester.
[0028] Figure 5 The utility model is a schematic diagram of the overall structure of a harvester grass cutter working state detection device after a protective cover is installed.
[0029] Figure 6The utility model is a structural schematic diagram of an alarm module in a device for detecting the working state of a grass cutter of a harvester.
[0030] In the figure, 1. speed sensor; 2. speed sensor bracket; 21. fixed end one; 22. fixed end two; 23. annular boss; 24. matching hole; 25. annular groove; 26. elastic gasket; 3. grass cutter shaft; 4. bearing end cover; 5. induction contact; 6. induction gear disc; 7. induction tooth; 8. fixing screw hole; 9. mounting hole; 10. protective cover; 11. waist-shaped hole; 12. fixing hole. DETAILED DESCRIPTION
[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] like Figures 1 to 6 As shown, a device for detecting the working status of a grass cutter of a harvester is characterized in that it includes a speed sensor 1 for real-time monitoring the rotation speed of a grass cutter shaft 3 and an alarm for alarming abnormal rotation speed of the grass cutter shaft, and the speed sensor 1 and the alarm are both electrically connected to a controller.
[0033] Furthermore, the speed sensor 1 is fixed to the bearing end cover 4 at one end of the grass cutter shaft 3 through the speed sensor bracket 2, and the sensing contact 5 of the speed sensor 1 is opposite to the circumference of the sensing teeth 7 on the sensing toothed disc 6 fixedly arranged on the grass cutter shaft 3.
[0034] Furthermore, the speed sensor bracket 2 includes a fixed end 21 for fixing the speed sensor 1 and a fixed end 22 for fixing the fixed end 21 on the bearing end cover 4 at one end of the grass cutter shaft 3. The fixed end 21 and the fixed end 22 are integrally formed, and the fixed end 22 is provided with a waist-shaped hole 11 opposite to the fixing screw hole 8 on the bearing end cover 4 at one end of the grass cutter shaft 3. The waist-shaped hole 11 is connected to the fixing screw hole 8 by bolts.
[0035] Furthermore, a mounting hole 9 matching the speed sensor 1 is provided on the fixed end 21, an annular boss 23 matching the speed sensor 1 is fixedly provided on one axial side of the mounting hole 9, a matching hole 24 matching the fixing hole 12 on the speed sensor 1 is provided on one radial side of the mounting hole 9, and the fixing hole 12 and the matching hole 24 are connected by bolts.
[0036] Furthermore, an annular groove 25 is provided in the annular boss 23 , and an elastic washer 26 is provided in the annular groove 25 . The outer wall of the elastic washer 26 is tightly matched with the annular groove 25 , and the inner hole of the elastic washer 26 is tightly matched with the speed sensor 1 .
[0037] Furthermore, the speed sensor bracket 2 is also fixedly provided with a protective cover 10, and the sensing contact 5 of the speed sensor 1 and the sensing gear plate 6 fixedly provided on the grass cutter shaft 3 respectively penetrate the speed sensor 1 and the grass cutter shaft 3 and extend into the protective cover 10.
[0038] Working principle of the utility model: the speed sensor 1 monitors the speed of the mower shaft 3 in real time during the operation of the mower. When the load of the mower increases, the speed of the mower shaft 3 will decrease. Therefore, when the speed of the mower shaft 3 suddenly decreases abnormally, the controller controls the alarm system to start the alarm, reminding the driver to reduce the driving speed or stop harvesting, and continue harvesting after the alarm is lifted and the speed is normal. When the speed of the mower shaft 3 is lower than the minimum limit, the controller directly controls the engine to stop, which is convenient for the driver to check the mower to prevent the mower from being damaged due to excessive load and affecting the operation, greatly reducing the risk of the mower shaft 3 breaking, not only making the equipment service life longer, but also greatly improving the operation efficiency.
Claims
1. A device for detecting the working state of a harvester grass cutter, characterized in that: It comprises a rotation speed sensor (1) for real-time monitoring of the rotation speed of a grass cutter shaft (3) and an alarm for alarming when the rotation speed of the grass cutter shaft is abnormal, wherein the rotation speed sensor (1) and the alarm are both electrically connected to a controller; The speed sensor (1) is fixed to a bearing end cover (4) at one end of a grass cutter shaft (3) via a speed sensor bracket (2); the sensing contact (5) of the speed sensor (1) is opposite to the circumference of each sensing tooth (7) on a sensing toothed disc (6) fixedly arranged on the grass cutter shaft (3).
2. A harvester grass cutter working state detection device according to claim 1, characterized in that: The speed sensor bracket (2) comprises a fixed end (21) for fixing the speed sensor (1) and a fixed end (22) for fixing the fixed end (21) on a bearing end cover (4) at one end of a grass cutter shaft (3); the fixed end (21) and the fixed end (22) are integrally formed; the fixed end (22) is provided with a waist-shaped hole (11) opposite to a fixing screw hole (8) on the bearing end cover (4) at one end of the grass cutter shaft (3); the waist-shaped hole (11) is connected to the fixing screw hole (8) by bolts.
3. A harvester grass cutter working state detection device according to claim 2, characterized in that: The first fixed end (21) is provided with a mounting hole (9) matching the rotation speed sensor (1); an annular boss (23) matching the rotation speed sensor (1) is fixedly provided on one axial side of the mounting hole (9); a matching hole (24) matching the fixing hole (12) on the rotation speed sensor (1) is provided on one radial side of the mounting hole (9); the fixing hole (12) and the matching hole (24) are connected by bolts.
4. A harvester grass cutter working state detection device according to claim 3, characterized in that: An annular groove (25) is provided in the annular boss (23), an elastic gasket (26) is provided in the annular groove (25), an outer wall of the elastic gasket (26) is tightly matched with the annular groove (25), and an inner hole of the elastic gasket (26) is tightly matched with the rotation speed sensor (1).
5. A harvester grass cutter working state detection device according to claim 4, characterized in that: The rotation speed sensor bracket (2) is also fixedly provided with a protective cover (10), and the sensing contact (5) of the rotation speed sensor (1) and the sensing toothed disc (6) fixedly provided on the grass cutter shaft (3) respectively penetrate the rotation speed sensor (1) and the grass cutter shaft (3) and extend into the protective cover (10).