A new type of hydraulically controlled main clutch device

Abstract

The utility model relates to the technical field of main clutch, and specifically to a novel hydraulically controlled main clutch device, comprising a travel pump, a tensioning assembly for tensioning a belt, and an oil circuit assembly for connecting the travel pump and the tensioning assembly; the beneficial effects of the utility model are as follows: in actual use, hydraulic oil is drawn out from the travel pump to supply pressure to the main clutch cylinder, so that after the main clutch cylinder is extended, the belt is tensioned by the tensioning wheel; at the same time, the pressure supplied to the main clutch cylinder is accurately adjusted by a control valve, so that the belt is at a suitable tension; that is, the present application adopts a travel pump to supply oil to the main clutch cylinder, with a small flow rate, a small and stable pressure, and will not be affected by the size of the vehicle throttle, thereby ensuring a stable extension speed of the main clutch cylinder and avoiding impact damage to the belt.

Description

Technical Field

[0001] The utility model relates to the technical field of main clutch, in particular to a novel hydraulically controlled main clutch device. Background Art

[0002] In modern agricultural machinery, engineering machinery and various vehicles, the main clutch device is a key component for controlling power transmission and disconnection. Its stability and reliability directly affect the operating efficiency and safety of the equipment. Although the traditional mechanical main clutch device has a relatively simple structure, it is cumbersome to operate and requires high operating skills from the driver. With the continuous development of hydraulic technology, the hydraulic main clutch device has gradually been widely used in various equipment due to its advantages such as simple operation and quick response.

[0003] However, the existing hydraulic main clutch device still has some problems that need to be solved in the design and application process. First, its structure is relatively complex, including multiple hydraulic components and mechanical parts, which not only increases the manufacturing cost, but also increases the difficulty of maintenance and maintenance. Secondly, since the hydraulic main clutch device is directly controlled by the vehicle throttle, when the throttle opening is large, the cylinder extends too fast, which can easily cause excessive impact on the transmission belt, causing belt damage and even equipment failure.

[0004] Therefore, a novel hydraulically controlled main clutch device is needed to overcome the occurrence of the above problems. Utility Model Content

[0005] In order to solve the above problems, the embodiment of the utility model provides a new hydraulically controlled main clutch device, which achieves the purpose of solving the problems raised in the background technology.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: a new hydraulically controlled main clutch device, including a travel pump, a tensioning assembly for tensioning a belt, and an oil circuit assembly for connecting the travel pump and the tensioning assembly; the tensioning assembly includes a main clutch cylinder and a tensioning wheel arranged at the end of the main clutch cylinder; the oil circuit assembly includes a control valve for adjusting the oil pressure, an oil circuit 1 for connecting the control valve and the travel pump, an oil circuit 2 and an oil circuit 3 for connecting the control valve and the main clutch cylinder, and an oil circuit 4 for connecting the control valve and the hydraulic oil tank.

[0007] As a further improvement of the above technical solution:

[0008] The oil circuit 1 is connected to the pressure port of the oil replenishment pump of the travel pump.

[0009] The control valve adjusts the pressure of oil circuit 2 to 1.5-2.0 Bar.

[0010] The beneficial effects of the embodiments of the utility model are:

[0011] In actual use, hydraulic oil is drawn from the travel pump to supply pressure to the main clutch cylinder, so that after the main clutch cylinder is extended, the belt is tensioned through the tensioner; at the same time, the pressure supplied to the main clutch cylinder is accurately adjusted through the control valve to make the belt at an appropriate tension; that is, the present application uses a travel pump to supply oil to the main clutch cylinder, with a small flow rate, small and stable pressure, and will not be affected by the size of the vehicle's throttle, thereby ensuring that the extension speed of the main clutch cylinder is stable and avoiding impact damage to the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] In the figure: 1. Travel pump; 2. Tensioning assembly; 21. Main clutch cylinder; 22. Tensioning wheel; 3. Oil circuit assembly; 31. Control valve; 32. Oil circuit one; 33. Oil circuit two; 34. Oil circuit three; 35. Oil circuit four; 4. Hydraulic oil tank. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0015] See also Figure 1 The embodiment of the utility model discloses a novel hydraulically controlled main clutch device, comprising a travel pump 1, a tensioning assembly 2 for tensioning a belt, and an oil circuit assembly 3 for connecting the travel pump 1 and the tensioning assembly 2;

[0016] The tensioning assembly 2 includes a main clutch oil cylinder 21 and a tensioning wheel 22 arranged at the end of the main clutch oil cylinder 21;

[0017] The oil circuit assembly 3 includes a control valve 31 for adjusting oil pressure, an oil circuit 1 32 for connecting the control valve 31 and the travel pump 1, an oil circuit 2 33 and an oil circuit 3 34 for connecting the control valve 31 and the main clutch cylinder 21, and an oil circuit 4 35 for connecting the control valve 31 and the hydraulic oil tank 4;

[0018] The hydraulic oil in the travel pump 1 is passed into the control valve 31 through the oil circuit 1 32. After the oil pressure is precisely regulated by the control valve 31, the hydraulic oil is supplied to the main clutch cylinder 21 through the oil circuit 2 33, and the oil is returned to the control valve 31 through the oil circuit 3 34. The oil return port in the control valve 31 is connected to the hydraulic oil tank 4 through the oil circuit 4 35.

[0019] In actual use, hydraulic oil is drawn from the travel pump 1 to supply pressure to the main clutch cylinder 21, so that after the main clutch cylinder 21 is extended, the belt is tensioned by the tensioning wheel 22; at the same time, the pressure supplied to the main clutch cylinder 21 is accurately adjusted by the control valve to make the belt at an appropriate tension; that is, the present application uses the travel pump 1 to supply oil to the main clutch cylinder 21, with a small flow rate, small and stable pressure, and will not be affected by the size of the vehicle's throttle, thereby ensuring that the extension speed of the main clutch cylinder 21 is stable and avoiding impact damage to the belt.

[0020] As a further illustration of this application:

[0021] The oil circuit 1 32 is connected to the pressure port of the oil replenishing pump of the travel pump 1; hydraulic oil is supplied through the oil replenishing pump of the travel pump 1 to avoid affecting the operating oil volume of the travel pump 1, that is, to ensure that the oil volume of the travel pump 1 is sufficient when it is running.

[0022] As a further illustration of this application:

[0023] The control valve 31 adjusts the pressure of the oil circuit 2 33 to 1.5-2.0 Bar, and reasonably controls the thrust of the main clutch cylinder 21 to keep the belt at a suitable tension.

[0024] As a further illustration of this application:

[0025] When manufacturing the master clutch cylinder 21, the stroke of the master clutch cylinder 21 is designed according to the position of the belt, and 20 mm is added to the determined stroke to compensate for the deformation of the belt after long-term use.

[0026] As a further illustration of this application:

[0027] After the engine is turned off, the engine power wheel will rotate for a short time due to inertia, and the rotation of the engine power wheel will drive the travel pump 1 to rotate, thereby realizing the oil return of the travel pump 1, that is, realizing the oil return of the main clutch cylinder 21, so that the connection between the tensioning wheel 22 and the belt is disconnected, making the belt in a relaxed state, which will not affect the next ignition start.

[0028] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0030] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0031] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A new hydraulically controlled main clutch device, characterized in that: It comprises a travel pump (1), a tensioning assembly (2) for tensioning a belt, and an oil circuit assembly (3) for connecting the travel pump (1) and the tensioning assembly (2); the tensioning assembly (2) comprises a main clutch oil cylinder (21) and a tensioning wheel (22) arranged at the end of the main clutch oil cylinder (21); The oil circuit assembly (3) comprises a control valve (31) for adjusting oil pressure, an oil circuit 1 (32) for connecting the control valve (31) and a travel pump (1), an oil circuit 2 (33) and an oil circuit 3 (34) for connecting the control valve (31) and a main clutch cylinder (21), and an oil circuit 4 (35) for connecting the control valve (31) and a hydraulic oil tank (4).

2. The novel hydraulically controlled main clutch device according to claim 1 is characterized in that: The oil circuit 1 (32) is connected to the oil replenishment pump pressure port of the travel pump (1).

3. The novel hydraulically controlled main clutch device according to claim 1 is characterized in that: The control valve (31) adjusts the pressure of the second oil circuit (33) to be between 1.5 and 2.0 Bar.

Images