Switching control valve group and agricultural machinery

Abstract

The utility model relates to the field of agricultural machinery, and discloses a switching control valve group and agricultural machinery, the switching control valve group comprises a two-position six-way valve, a first hydraulic lock and a second hydraulic lock, the two-position six-way valve is provided with an oil inlet, an oil return port, a first working oil port, a second working oil port, a third working oil port and a fourth working oil port, the oil inlet is communicated with the first working oil port and the oil return port is communicated with the second working oil port when in the first valve position, the oil inlet is communicated with the third working oil port and the oil return port is communicated with the fourth working oil port when in the second valve position, and the first hydraulic lock is directly communicated with the first working oil port and the second working oil port; and the second hydraulic lock is directly communicated with the third working oil port and the fourth working oil port. According to the switching control valve group, the change of a hydraulic system is small when an execution mechanism needs to be newly added to agricultural machinery, the installation process is simple, convenient and flexible, and the installation cost is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the field of switching control valve groups, and in particular relates to a switching control valve group and agricultural machinery. Background Art

[0002] At present, agricultural machinery can be equipped with multiple different actuators to meet different operating requirements. In the existing technology, when agricultural machinery is equipped with an actuator, the existing hydraulic system needs to be modified. The main modification methods are to increase the number of multi-way valves or add two-position four-way valves, etc., which require adding more hydraulic pipelines and redesigning the layout of the hydraulic pipelines of the hydraulic system. The modification is large and the installation process is complicated, with high installation costs. Utility Model Content

[0003] In view of the above-mentioned deficiencies or defects in the prior art, the utility model provides a switching control valve group and agricultural machinery, aiming to solve the technical problems of large hydraulic system improvements, complex installation process and high installation cost when adding actuators to agricultural machinery.

[0004] To achieve the above object, the utility model provides a switching control valve group, the switching control valve group comprising:

[0005] A two-position six-way valve having an oil inlet, an oil return port, a first working oil port, a second working oil port, a third working oil port and a fourth working oil port. When in a first valve position, the oil inlet is connected to the first working oil port, the oil return port is connected to the second working oil port, and when in a second valve position, the oil inlet is connected to the third working oil port, and the oil return port is connected to the fourth working oil port;

[0006] a first hydraulic lock, which is arranged on the valve body of the two-position six-way valve and has a first oil inlet channel and a first oil outlet channel, wherein the oil inlet end of the first oil inlet channel is directly connected to the first working oil port, and the oil outlet end of the first oil outlet channel is directly connected to the second working oil port;

[0007] The second hydraulic lock is arranged on the valve body of the two-position six-way valve and has a second oil inlet channel and a second oil outlet channel. The oil inlet end of the second oil inlet channel is directly connected to the third working oil port, and the oil outlet end of the second oil outlet channel is directly connected to the fourth working oil port.

[0008] Optionally, the first hydraulic lock is a one-way hydraulic lock, and when the first oil inlet channel is filled with oil, the first oil outlet channel is connected, and when the first oil inlet channel stops filling with oil, the first oil outlet channel is blocked;

[0009] The second hydraulic lock is a one-way hydraulic lock. When the second oil inlet passage is filled with oil, the second oil outlet passage is connected. When the second oil inlet passage stops filling with oil, the second oil outlet passage is blocked.

[0010] Optionally, the first hydraulic lock and the second hydraulic lock are both single-hydraulic-controlled one-way valves.

[0011] Optionally, the first hydraulic lock is a bidirectional hydraulic lock, and when the first oil inlet channel is inletting oil, the first oil outlet channel is connected, and when the first oil inlet channel stops inletting oil, both the first oil inlet channel and the first oil outlet channel are blocked;

[0012] The second hydraulic lock is a one-way hydraulic lock. When the second oil inlet channel is intake oil, the second oil outlet channel is connected. When the second oil inlet channel stops intake oil, both the second oil inlet channel and the second oil outlet channel are blocked.

[0013] Optionally, the first hydraulic lock is a double hydraulically controlled one-way valve.

[0014] Optionally, the valve body of the two-position six-way valve has a first side and a second side facing each other, the first working oil port and the second working oil port are both arranged on the first side, the third working oil port and the fourth working oil port are both arranged on the second side, the first hydraulic lock is arranged on the first side, and the second hydraulic lock is arranged on the second side.

[0015] Optionally, sealing rings are respectively provided at the connection between the first hydraulic lock and the valve body of the two-position six-way valve and at the connection between the second hydraulic lock and the valve body of the two-position six-way valve.

[0016] Optionally, the switching control valve group is an integral casting structure.

[0017] Optionally, the two-position six-way valve is a solenoid valve, which switches to the first valve position when powered, and switches to the second valve position when powered off.

[0018] The utility model also provides an agricultural machine, which comprises the above-mentioned switching control valve group.

[0019] Through the above technical solution, the switching control valve group of the present utility model can be applied to the hydraulic system of agricultural machinery. The oil inlet and oil return port of the two-position six-way valve are respectively connected to the hydraulic oil source of the hydraulic system, and the first hydraulic lock is connected to the original actuator. When a new actuator needs to be added to the agricultural machinery, connecting the new actuator to the second hydraulic lock can connect the new actuator to the hydraulic system of the agricultural machinery. With such a setting, it is not necessary to add a large number of hydraulic pipelines and redesign the layout of the hydraulic pipelines of the hydraulic system, the modification to the hydraulic system is small, the installation process is relatively simple and flexible, and the installation cost is effectively reduced. In addition, the switching control valve group is integrated by a two-position six-way valve, a first hydraulic lock and a second hydraulic lock, the overall structure is compact and small, and the versatility is strong. Moreover, the first hydraulic lock and the second hydraulic lock have the characteristic of being able to lock the hydraulic oil in the circuit, so that the switching control valve group can be applied to the situation where the actuator needs to perform pressure-holding operation.

[0020] Other features and advantages of the present utility model will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0022] Figure 1 is a schematic structural diagram of the switching control valve group in an embodiment of the present utility model;

[0023] Figure 2 is Figure 1 a sectional view of the switching control valve group in

[0024] Figure 3 is Figure 1 a schematic principle diagram of the switching control valve group in

[0025] DESCRIPTION OF THE REFERENCE NUMERALS:

[0026] 1 Two-position six-way valve

[0027] 2 First hydraulic lock

[0028] 21 First oil inlet passage 22 First oil outlet passage

[0029] 3 Second hydraulic lock

[0030] 31 Second oil inlet passage 32 Second oil outlet passage

[0031] B Oil inlet port A Oil return port

[0032] B1 First working oil port A1 Second working oil port

[0033] The third working oil port B2 and the fourth working oil port A2 Specific embodiments

[0034] The specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0035] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0036] In the present utility model, unless otherwise stated, the orientation terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. usually refer to the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present utility model; the orientation terms "inner" and "outer" refer to the inside and outside relative to the contour of each component itself.

[0037] The present utility model will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0038] The present utility model first provides a switching control valve group.

[0039] In one embodiment, referring to the attached Figure 1 to the attached Figure 3 as shown, the switching control valve group includes:

[0040] A two-position six-way valve 1, having an oil inlet B, an oil return port A, a first working oil port B1, a second working oil port A1, a third working oil port B2, and a fourth working oil port A2. When in the first valve position, the oil inlet B is communicated with the first working oil port B1, and the oil return port A is communicated with the second working oil port A1. When in the second valve position, the oil inlet B is communicated with the third working oil port B2, and the oil return port A is communicated with the fourth working oil port A2;

[0041] A first hydraulic lock 2, arranged on the valve body of the two-position six-way valve 1, and having a first oil inlet passage 21 and a first oil outlet passage 22. The oil inlet end of the first oil inlet passage 21 is directly communicated with the first working oil port B1, and the oil outlet end of the first oil outlet passage 22 is directly communicated with the second working oil port A1;

[0042] The second hydraulic lock 3 is arranged on the valve body of the two-position six-way valve 1, and has a second oil inlet channel 31 and a second oil outlet channel 32. The oil inlet end of the second oil inlet channel 31 is directly connected to the third working oil port B2, and the oil outlet end of the second oil outlet channel 32 is directly connected to the fourth working oil port A2.

[0043] The switching control valve group of the present embodiment can be applied to the hydraulic system of agricultural machinery. The oil inlet B and the oil return port A of the two-position six-way valve 1 are respectively connected to the hydraulic oil source of the hydraulic system. The first hydraulic lock 2 is connected to the original actuator, specifically, the original actuator is connected to the oil outlet end of the first oil inlet channel 21 and the oil inlet end of the first oil outlet channel 22. When the agricultural machinery needs to add a new actuator, the new actuator is connected to the second hydraulic lock 3, specifically, the new actuator is connected to the oil outlet end of the second oil inlet channel 31 and the oil inlet end of the second oil outlet channel 32. In this way, the new actuator can be connected to the hydraulic system of the agricultural machinery. With this arrangement, there is no need to add more hydraulic pipelines and redesign the hydraulic pipeline layout of the hydraulic system. The changes to the hydraulic system are relatively small, the installation process is relatively simple and flexible, and the installation cost is effectively reduced. In addition, the switching control valve group is integrated with a two-position six-way valve 1, a first hydraulic lock 2 and a second hydraulic lock 3. The overall structure is compact and has strong versatility. Moreover, the first hydraulic lock 2 and the second hydraulic lock 3 have the characteristic of being able to lock the circuit hydraulic oil, so that the switching control valve group can be used in situations where the actuator needs to maintain pressure. For example, through the locking effect of the first hydraulic lock 2 and the second hydraulic lock 3, the piston rod of the hydraulic cylinder can be maintained in a predetermined extended position.

[0044] In one embodiment, the first hydraulic lock 2 is a one-way hydraulic lock. When the first oil inlet channel 21 is filled with oil, the first oil outlet channel 22 is connected. When the first oil inlet channel 21 stops filling with oil, the first oil outlet channel 22 is blocked.

[0045] The second hydraulic lock 3 is a one-way hydraulic lock. When the second oil inlet channel 31 is supplied with oil, the second oil outlet channel 32 is connected. When the second oil inlet channel 31 stops supplying oil, the second oil outlet channel 32 is blocked.

[0046] It can be understood that the switching control valve group of this embodiment is suitable for an actuator that needs to lock the hydraulic oil output side during operation.

[0047] In one embodiment, referring to the attached Figure 2 and attached Figure 3 As shown, the first hydraulic lock 2 and the second hydraulic lock 3 are both single hydraulic controlled one-way valves. The structure and working principle of the single hydraulic controlled one-way valve are well known to those skilled in the art, so they will not be described here.

[0048] In one embodiment, the first hydraulic lock 2 is a bidirectional hydraulic lock. When the first oil inlet channel 21 is filled with oil, the first oil outlet channel 22 is connected. When the first oil inlet channel 21 stops filling with oil, both the first oil inlet channel 21 and the first oil outlet channel 22 are closed.

[0049] The second hydraulic lock 3 is a one-way hydraulic lock. When the second oil inlet channel 31 is filled with oil, the second oil outlet channel 32 is connected. When the second oil inlet channel 31 stops filling with oil, both the second oil inlet channel 31 and the second oil outlet channel 32 are blocked.

[0050] It can be understood that the switching control valve group of this embodiment is suitable for an actuator that needs to lock the input side and the output side of the hydraulic oil during operation.

[0051] In one embodiment, the first hydraulic lock 2 is a double hydraulically controlled one-way valve. The structure and working principle of the double hydraulically controlled one-way valve are well known to those skilled in the art, so they will not be described in detail here.

[0052] In one embodiment, referring to the attached Figure 1 and attached Figure 2 As shown, the valve body of the two-position six-way valve 1 has a first side surface and a second side surface opposite to each other, the first working oil port B1 and the second working oil port A1 are both arranged on the first side surface, the third working oil port B2 and the fourth working oil port A2 are both arranged on the second side surface, the first hydraulic lock 2 is arranged on the first side surface, and the second hydraulic lock 3 is arranged on the second side surface. In this way, the first hydraulic lock 2 and the second hydraulic lock 3 are separated by a large space to avoid mutual interference between the pipelines connected to the actuators.

[0053] Of course, in some other embodiments, the arrangement of the first working oil port B1, the second working oil port A1, the third working oil port B2 and the fourth working oil port A2 is not limited thereto and can be designed according to actual needs.

[0054] In one embodiment, referring to the attached Figure 2 As shown, sealing rings are respectively provided at the connection between the first hydraulic lock 2 and the valve body of the two-position six-way valve 1 and at the connection between the second hydraulic lock 3 and the valve body of the two-position six-way valve 1. Such a configuration effectively improves the hydraulic oil sealing of the switching control valve group and avoids oil leakage.

[0055] In one embodiment, the switching control valve group is an integral casting structure, which is formed by casting. Compared with a conventional plate-type valve group, it has a smaller size and a lower manufacturing cost.

[0056] Of course, in some other embodiments, the switching control valve group can also be formed by machining.

[0057] In one embodiment, referring to the attached Figure 2 and attached Figure 3As shown, the two-position six-way valve 1 is a solenoid valve. When energized, it switches to the first valve position, and when de-energized, it switches to the second valve position. With such a setting, in actual application, the operator can control the two-position six-way valve 1 to switch between the first valve position and the second valve position through the controller, so as to control the switching connection of the agricultural machinery between the original actuator and the newly added actuator.

[0058] The present utility model also provides an agricultural machinery, and the agricultural machinery includes the above-mentioned switching control valve group. Obviously, this agricultural machinery also has the beneficial effects possessed by the above-mentioned switching control valve group.

[0059] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0061] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0062] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as a limitation to the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A switching control valve group, characterized in that, The switching control valve group comprises: A two-position six-way valve (1) having an oil inlet (B), an oil return port (A), a first working oil port (B1), a second working oil port (A1), a third working oil port (B2) and a fourth working oil port (A2); when the valve is in a first valve position, the oil inlet (B) is connected to the first working oil port (B1), and the oil return port (A) is connected to the second working oil port (A1); when the valve is in a second valve position, the oil inlet (B) is connected to the third working oil port (B2), and the oil return port (A) is connected to the fourth working oil port (A2); A first hydraulic lock (2) is arranged on the valve body of the two-position six-way valve (1) and comprises a first oil inlet channel (21) and a first oil outlet channel (22), wherein the oil inlet end of the first oil inlet channel (21) is directly connected to the first working oil port (B1), and the oil outlet end of the first oil outlet channel (22) is directly connected to the second working oil port (A1); The second hydraulic lock (3) is arranged on the valve body of the two-position six-way valve (1) and has a second oil inlet channel (31) and a second oil outlet channel (32), wherein the oil inlet end of the second oil inlet channel (31) is directly connected to the third working oil port (B2), and the oil outlet end of the second oil outlet channel (32) is directly connected to the fourth working oil port (A2).

2. The switching control valve group according to claim 1, wherein The first hydraulic lock (2) is a one-way hydraulic lock. When the first oil inlet channel (21) is flowing with oil, the first oil outlet channel (22) is connected. When the first oil inlet channel (21) stops flowing with oil, the first oil outlet channel (22) is blocked. The second hydraulic lock (3) is a one-way hydraulic lock. When the second oil inlet channel (31) is inletting oil, the second oil outlet channel (32) is connected. When the second oil inlet channel (31) stops inletting oil, the second oil outlet channel (32) is blocked.

3. The switching control valve group according to claim 2, wherein, The first hydraulic lock (2) and the second hydraulic lock (3) are both single-liquid-controlled one-way valves.

4. The switching control valve group according to claim 1, wherein, The first hydraulic lock (2) is a bidirectional hydraulic lock. When the first oil inlet channel (21) is flowing with oil, the first oil outlet channel (22) is connected. When the first oil inlet channel (21) stops flowing with oil, both the first oil inlet channel (21) and the first oil outlet channel (22) are blocked. The second hydraulic lock (3) is a one-way hydraulic lock. When the second oil inlet channel (31) is flowing with oil, the second oil outlet channel (32) is connected. When the second oil inlet channel (31) stops flowing with oil, both the second oil inlet channel (31) and the second oil outlet channel (32) are blocked.

5. The switching control valve group according to claim 4, characterized in that The first hydraulic lock (2) is a double hydraulically controlled one-way valve.

6. The switching control valve group according to claim 1, wherein, The valve body of the two-position six-way valve (1) has a first side surface and a second side surface opposite to each other; the first working oil port (B1) and the second working oil port (A1) are both arranged on the first side surface; the third working oil port (B2) and the fourth working oil port (A2) are both arranged on the second side surface; the first hydraulic lock (2) is arranged on the first side surface; and the second hydraulic lock (3) is arranged on the second side surface.

7. The switching control valve group according to claim 6, wherein Sealing rings are respectively arranged at the connection between the first hydraulic lock (2) and the valve body of the two-position six-way valve (1) and at the connection between the second hydraulic lock (3) and the valve body of the two-position six-way valve (1).

8. The switching control valve group according to claim 1, characterized in that, The switching control valve group is of an integral casting structure.

9. The switching control valve group according to claim 1, wherein The two-position six-way valve (1) is an electromagnetic valve, which switches to the first valve position when powered on and switches to the second valve position when powered off.

10. An agricultural machine, characterized in that, The agricultural machinery includes the switching control valve group according to any one of claims 1 to 9.

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