Rotating speed adjusting hydraulic system

Abstract

The utility model relates to the field of agricultural machinery, in particular to a rotating speed adjusting hydraulic system. The utility model provides a rotating speed adjusting hydraulic system which is used for adjusting the rotating speed of a corn husker and comprises a speed adjusting oil cylinder, an electromagnetic control valve, a hydraulic pump and a throttling connector. The speed regulation oil cylinder, the throttling connector, the electromagnetic control valve and the hydraulic pump are sequentially connected. The throttling connector is arranged between the electromagnetic control valve and the speed regulation oil cylinder, and the oil inlet quantity and displacement of the speed regulation oil cylinder are controlled by controlling the power-on time of the electromagnetic control valve, so that a belt pulley of a transmission belt of the peeling machine is tensioned, and the speed regulation oil cylinder can be adjusted according to different displacements of a piston rod of the speed regulation oil cylinder. The stepless speed regulation mechanism has the advantages that the stepless speed regulation mechanism corresponds to different tensioning positions and different transmission ratios, so that stepless speed regulation of the peeling machine is realized, and the stepless speed regulation mechanism can adapt to corns of different varieties or different dry and wet degrees and can achieve the optimal operation effect.

Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery, in particular to a speed regulating hydraulic system. Background Art

[0002] The peeling machine is an important working device on the corn machine. Its speed has an important influence on the peeling effect. Currently, most peeling machines are mechanically driven, and the speed is directly related to the engine speed.

[0003] For corns of different varieties and dryness and wetness, different peeling machine speeds are required to achieve better results.

[0004] In the existing technology, the speed of the peeling machine cannot be adjusted individually. In order to achieve a better peeling effect, multiple motors or multiple peeling machines are required, which invisibly increases the cost. Alternatively, peeling corn of different varieties or dryness and wetness at the same speed cannot achieve the best peeling effect. Utility Model Content

[0005] The purpose of the utility model is to provide a speed regulating hydraulic system, which can solve the above technical problems.

[0006] The embodiment of the present utility model is achieved as follows:

[0007] The utility model provides a speed regulating hydraulic system for adjusting the speed of a corn peeling machine, comprising a speed regulating oil cylinder, an electromagnetic control valve, a hydraulic pump and a throttling joint;

[0008] The speed regulating oil cylinder, the throttling joint, the electromagnetic control valve and the hydraulic pump are connected in sequence.

[0009] In an optional embodiment, the electromagnetic control valve is an electromagnetic multi-way valve.

[0010] In an optional embodiment, the electromagnetic multi-way valve includes a reversing valve, an enabling valve and a relief valve;

[0011] The enabling valve and the overflow valve are arranged at the liquid inlet, and the outlet of the reversing valve is connected to the two liquid outlets respectively.

[0012] In an optional embodiment, the throttle joint has a damping hole.

[0013] In an optional embodiment, the number of the throttling joints is two;

[0014] The two throttling joints are respectively connected to the two sides of the piston in the speed regulating oil cylinder.

[0015] In an optional embodiment, the electromagnetic control valve is an electromagnetic proportional control valve.

[0016] In an optional embodiment, the speed regulating cylinder is a double-acting cylinder.

[0017] In an optional embodiment, a displacement sensor is provided on the speed regulating cylinder for monitoring the position of the piston rod of the speed regulating cylinder.

[0018] In an optional embodiment, a controller is further included, and the controller is connected to the displacement sensor and the electromagnetic control valve signal.

[0019] In an optional embodiment, a flow control valve is connected to the hydraulic pump.

[0020] The beneficial effects of the embodiments of the present utility model are:

[0021] A throttling joint is set between the electromagnetic control valve and the speed regulating cylinder. The oil intake and displacement of the speed regulating cylinder are controlled by controlling the power-on time of the electromagnetic control valve, thereby tensioning the pulley of the peeling machine's transmission belt. Different displacements of the piston rod of the speed regulating cylinder correspond to different tensioning positions and different transmission ratios, thereby realizing stepless speed regulation of the peeling machine. It can cope with corn of different varieties or different dryness and wetness, so that it can achieve the best operating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a working principle diagram of the speed regulation hydraulic system provided in an embodiment of the utility model.

[0024] Icons: 1-speed control cylinder; 2-throttle joint; 3-reversing valve; 4-enabling valve; 5-overflow valve; 6-hydraulic pump; 7-flow control valve. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0030] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] The following is combined with Figure 1 , some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0032] The utility model provides a speed regulating hydraulic system for adjusting the speed of a corn peeling machine, such as Figure 1As shown, it includes a speed regulating cylinder 1, an electromagnetic control valve, a hydraulic pump 6 and a throttle joint 2; the speed regulating cylinder 1, the throttle joint 2, the electromagnetic control valve and the hydraulic pump 6 are connected in sequence.

[0033] In this embodiment, the piston rod of the speed regulating cylinder 1 is connected to the spring tensioning device on the peeling machine. Through different displacements of the piston rod, different tensioning positions and different transmission ratios of the pulley on the peeling machine can be achieved, thereby achieving the purpose of speed regulation.

[0034] A throttle joint 2 is a component used in hydraulic systems. Its primary function is to regulate or limit the flow or pressure of an actuator. A throttle joint 2 typically contains a throttle orifice. Its operating principle is based on the Bernoulli equation, controlling flow by varying the orifice's opening or adjusting the pressure differential upstream and downstream of the orifice. In a hydraulic system, a throttle joint 2 can be used to control the flow rate of the oil, thereby achieving precise control of the speed of the hydraulic actuator.

[0035] In this embodiment, after the throttle joint 2 is provided between the speed regulating oil cylinder 1 and the electromagnetic control valve, the speed of the speed regulating oil cylinder 1 can be controlled, thereby achieving a stepless speed change effect of the peeling machine.

[0036] In an optional embodiment, the electromagnetic control valve is an electromagnetic multi-way valve.

[0037] Specifically, in an optional embodiment, the electromagnetic multi-way valve includes a reversing valve 3, an enabling valve 4 and a relief valve 5; the enabling valve 4 and the relief valve 5 are arranged at the liquid inlet, and the outlet of the reversing valve 3 is connected to two liquid outlets respectively.

[0038] The enabling valve 4 (also called the pilot valve) is usually used to control the opening of other valves. Its specific functions may include a hydraulic lock function to lock the hydraulic oil to prevent it from flowing back to the oil tank, thereby reducing vehicle body vibration and noise.

[0039] The relief valve 5 in the hydraulic system primarily provides constant pressure relief, pressure stabilization, system unloading, and safety protection. It ensures that the system pressure does not exceed the set safety value, preventing system overload. The relief valve 5 can be a direct-acting or pilot-operated type, offering a wide pressure regulation range and minimal pressure deviation.

[0040] The reversing valve 3 is responsible for changing the direction of the hydraulic oil flow and realizing the reversing control in the hydraulic system. It has a variety of flow forms and oil ports, which can be two-position or three-position, as well as multi-way types such as two-way, three-way, and four-way.

[0041] Specifically, in this embodiment, the reversing valve 3 is a three-position four-way valve.

[0042] More specifically, in this embodiment, the reversing valve 3 is an electromagnetic reversing valve 3 , and the valve core is directly driven by an electromagnet to move to achieve reversal.

[0043] In this embodiment, the enabling valve 4, the relief valve 5 and the reversing valve 3 are integrated, which reduces the complexity of the pipeline connection and improves the reliability and efficiency of the system.

[0044] In an optional embodiment, the throttle joint 2 has a damping hole.

[0045] In this embodiment, the damping hole provided in the throttle joint 2 can control the hydraulic flow and pressure, thereby achieving fine adjustment of the hydraulic cylinder.

[0046] In an optional embodiment, there are two throttling joints 2 ; the two throttling joints 2 are respectively connected to the two sides of the piston in the speed regulating cylinder 1 .

[0047] In this embodiment, the number of the throttle joints 2 is two.

[0048] Among them, one end of a throttle joint 2 is connected to an outlet of the electromagnetic multi-way valve, and the other end is connected to a hydraulic chamber of the speed control cylinder 1; one end of another throttle joint 2 is connected to another outlet of the electromagnetic multi-way valve, and the other end is connected to another hydraulic chamber of the speed control cylinder 1.

[0049] In an optional embodiment, the electromagnetic control valve is an electromagnetic proportional control valve.

[0050] A solenoid proportional control valve is a high-precision valve that uses electromagnetic force to achieve proportional control of fluid flow or pressure. The solenoid proportional control valve operates by varying the current in the solenoid coil to balance the spring force, thereby controlling the movement of the valve core and adjusting the valve opening.

[0051] In this embodiment, the electromagnetic control valve adopts an electromagnetic proportional regulating valve, which can control the ratio of the hydraulic oil of the two outlets, thereby adjusting the position of the piston rod of the speed regulating cylinder 1, thereby realizing the adjustment of the transmission ratio of the tensioning device and the peeling machine drive pulley.

[0052] In an optional embodiment, the speed regulating cylinder 1 is a double-acting cylinder.

[0053] A double-acting cylinder is a hydraulic actuator capable of operating in both directions, thanks to its internal hydraulic system design. This cylinder consists of a cylinder body, piston, piston rod, and seals. The cylinder body is divided into two working chambers, connected to the hydraulic system's supply and return ports, respectively. When the hydraulic system supplies pressurized oil to one working chamber through the supply port, the piston, under pressure, moves in the opposite direction, producing output force and motion. Meanwhile, the pressurized oil in the other working chamber flows back into the hydraulic system through the return port, forming a return flow.

[0054] In this embodiment, the two working chambers of the double-acting oil cylinder are respectively connected to the two throttling joints 2 to accurately control the position of the piston rod of the speed regulating oil cylinder 1.

[0055] In an optional embodiment, a displacement sensor is provided on the speed regulating cylinder 1 for monitoring the position of the piston rod of the speed regulating cylinder 1 .

[0056] The displacement sensor is installed on the double-acting cylinder to achieve precise position control and closed-loop control system. It provides accurate and reliable position feedback by monitoring the linear displacement of the hydraulic cylinder piston.

[0057] Types of displacement sensors include magnetostrictive displacement sensors, variable resistance sensors, variable inductance sensors, etc.

[0058] Magnetostrictive displacement sensors are widely used in hydraulic cylinders due to their high precision, stability, reliability, and repeatability. These sensors utilize non-contact measurement, offer a long service life, are highly adaptable to environmental conditions, require no regular calibration or maintenance, and provide absolute output, eliminating the need for reset upon restart. For example, a hydraulic cylinder with a built-in YMJ7318-41 displacement sensor has been successfully used in a remotely controlled tunnel boring machine, enabling orientation, positioning, and shaping during the tunneling process.

[0059] Displacement sensors can be installed internally or externally. The internal installation method is suitable for space-constrained working environments and can prevent damage from external forces. However, it increases the design and manufacturing complexity of the hydraulic cylinder. External installation is relatively simple, but may take up more space and may be more susceptible to damage in environments with strong shock or vibration. Different installation methods are used depending on the installation and use environment.

[0060] When selecting a displacement sensor, it's important to consider factors such as sensitivity, bandwidth, output mode, and range, and to choose based on the application environment and cost-effectiveness. For example, when purchase cost is a significant factor, a variable resistor (potentiometer) sensor might be an option. For heavy industrial and mobile equipment subject to high shock and vibration, a variable inductance displacement sensor with high tolerance to mechanical shock and vibration might be an option.

[0061] The application of displacement sensors in hydraulic cylinders is not limited to providing position feedback. They can also be integrated into intelligent systems for self-diagnosis and self-adjustment, becoming a key component of intelligent manufacturing systems. As technology develops, displacement sensors will be better integrated with the Internet of Things, big data, and artificial intelligence technologies to achieve smarter and more integrated industrial automation control.

[0062] In an optional embodiment, a controller is further included, and the controller is connected to the displacement sensor and the electromagnetic control valve signal.

[0063] The controller controls the electromagnetic control valve to adjust the position of the piston rod of the speed control cylinder 1. After the displacement sensor detects the position of the piston rod of the speed control cylinder 1, it transmits the signal to the controller. The controller adjusts the piston rod again according to the feedback of the displacement sensor to finally reach the precise position.

[0064] In an optional embodiment, a flow control valve 7 is connected to the hydraulic pump 6 .

[0065] In this embodiment, after the flow control valve 7 is connected to the hydraulic pump 6, the flow of the entire hydraulic oil circuit can be controlled, so that different workloads can be used.

[0066] The beneficial effects of the embodiments of the present utility model are:

[0067] A throttling joint 2 is set between the electromagnetic control valve and the speed regulating cylinder 1. The oil intake and displacement of the speed regulating cylinder 1 are controlled by controlling the power-on time of the electromagnetic control valve, thereby tensioning the pulley of the peeling machine transmission belt. Different displacements of the piston rod of the speed regulating cylinder 1 correspond to different tensioning positions and different transmission ratios, thereby realizing stepless speed regulation of the peeling machine, which can cope with different varieties or different dryness and wetness of corn, so that it can achieve the best operating effect.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A speed regulating hydraulic system for adjusting the speed of a corn peeling machine, characterized in that: It includes a speed regulating cylinder, an electromagnetic control valve, a hydraulic pump and a throttle joint; The speed regulating oil cylinder, the throttling joint, the electromagnetic control valve and the hydraulic pump are connected in sequence.

2. The speed regulating hydraulic system according to claim 1, characterized in that: The electromagnetic control valve is an electromagnetic multi-way valve.

3. The speed regulating hydraulic system according to claim 2, characterized in that: The electromagnetic multi-way valve includes a reversing valve, an enabling valve and a relief valve; The enabling valve and the overflow valve are arranged at the liquid inlet, and the outlet of the reversing valve is connected to the two liquid outlets respectively.

4. The speed regulating hydraulic system according to claim 1, characterized in that: The throttling joint is provided with a damping hole.

5. The speed regulating hydraulic system according to claim 1, characterized in that: The number of the throttling joints is two; The two throttling joints are respectively connected to the two sides of the piston in the speed regulating oil cylinder.

6. The speed regulating hydraulic system according to claim 1, characterized in that: The electromagnetic control valve is an electromagnetic proportional regulating valve.

7. The speed regulating hydraulic system according to claim 1, characterized in that: The speed regulating cylinder is a double-acting cylinder.

8. The speed regulating hydraulic system according to claim 1, characterized in that: The speed regulating oil cylinder is provided with a displacement sensor for monitoring the position of the piston rod of the speed regulating oil cylinder.

9. The speed regulating hydraulic system according to claim 8, characterized in that: It also includes a controller, which is connected to the displacement sensor and the electromagnetic control valve signal.

10. The speed regulating hydraulic system according to claim 1, characterized in that: The hydraulic pump is connected with a flow control valve.

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