Electromagnetic valve assembly and engineering machinery

Abstract

The utility model provides an electromagnetic valve assembly and engineering machinery, the electromagnetic valve assembly comprises a main valve block, a detachable electromagnetic valve and a pressure reducing valve are respectively arranged on the main valve block, the pressure reducing valve is arranged on one side of a shuttle valve, and the shuttle valve and a plurality of oil ducts are further arranged in the main valve block; a valve cavity is further formed in the main valve block, a plurality of oil ports are formed in the valve cavity, and a movable main valve element is arranged in the valve cavity. The oil ports comprise a first oil port and a second oil port, the first oil port and the second oil port alternately feed oil and return oil, and the pressure reducing valve and the shuttle valve are respectively communicated with the first oil port and the second oil port through the oil duct. According to the electromagnetic valve assembly of the structure, the pressure reducing valve and the shuttle valve are arranged on the main valve block at the same time, high pressure between the first oil port and the second oil port is used for controlling an oil source through the shuttle valve, the pressure reducing valve can effectively reduce impact of high-pressure oil on a control oil way, and therefore the electromagnetic valve assembly has the advantages of being capable of effectively relieving impact, prolonging the service life and being lower in use cost.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to a solenoid valve assembly and engineering machinery. Background Art

[0002] In recent years, with the continuous development of engineering technology, engineering machinery of various structures has been increasingly used in engineering construction, and my country has become the world's largest producer and seller of engineering machinery.

[0003] There are many types of construction machinery, such as excavators, pumping machinery, lifting machinery, and mining machinery. However, no matter what kind of construction machinery, it is almost inseparable from the hydraulic system of various structures. In the hydraulic system, the more important components include solenoid valves, etc., which realize different working conditions in the continuous reversal of the solenoid valves. Among the solenoid valves that are currently used more frequently, because the solenoid valves are often impacted by high-pressure oil when working, the service life of the control oil circuit in the solenoid valve is usually short, which in turn affects the service life and use cost of the solenoid valve.

[0004] In summary, how to provide a solenoid valve assembly that can effectively reduce impact, extend service life, and have lower use cost, and an engineering machinery including the solenoid valve assembly, has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a solenoid valve assembly which can effectively mitigate impact, prolong service life and has lower use cost, and an engineering machinery including the solenoid valve assembly.

[0006] The solution of the utility model is implemented as follows: the utility model proposes a solenoid valve assembly, including a main valve block, the main valve block is respectively provided with a detachable solenoid valve and a pressure reducing valve, the pressure reducing valve is arranged on one side of the shuttle valve, the main valve block is also provided with a shuttle valve and a plurality of oil passages; the main valve block is also provided with a valve cavity, the valve cavity is provided with a plurality of oil ports, and the valve cavity is provided with a movable main valve core; the oil port includes a first oil port and a second oil port, the first oil port and the second oil port alternately inlet and return oil, and the pressure reducing valve and the shuttle valve are respectively connected with the first oil port and the second oil port through the oil passage. Compared with the solenoid assembly of the existing structure, the solenoid valve assembly of this structure is provided with a pressure reducing valve and a shuttle valve on the main valve block at the same time, the shuttle valve uses the high pressure between the first oil port and the second oil port to control the oil source, and there is no need to provide control oil externally, and the pressure reducing valve can effectively reduce the impact of high-pressure oil on the control oil circuit, so it has the advantages of effectively reducing the impact, extending the service life, and lowering the cost of use.

[0007] Another technical solution of the utility model is that on the basis of the above, a control valve block is further provided at one end of the main valve block, and the solenoid valve and the pressure reducing valve are arranged on the control valve block.

[0008] Another technical solution of the utility model is that on the basis of the above, an oil outlet is further provided on one side of the pressure reducing valve, and a plurality of plugs are further provided on the main valve block and the control valve block; a plurality of first sealing rings for sealing are further provided on the contact surface between the control valve block and the main valve block.

[0009] Another technical solution of the utility model is that on the basis of the above, a receiving chamber is further provided in the control valve block, a movable electromagnetic valve core is provided in the receiving chamber, and an electromagnetic spring is also sleeved on one end of the electromagnetic valve core.

[0010] Another technical solution of the utility model is that on the basis of the above, one side of the solenoid valve core is further provided with an oil inlet and a working oil port, and the end of the solenoid valve core away from the electromagnetic spring is also provided with an oil return port that can be connected with the oil inlet and the working oil port.

[0011] Another technical solution of the utility model is that on the basis of the above, a spring cover is further provided at one end of the main valve block away from the solenoid valve, and a spring cavity is further provided in the spring cover.

[0012] Another technical solution of the utility model is that on the basis of the above, a main spring is further provided in the spring cavity, one end of the main spring is sleeved on the valve core, and the other end of the main spring is supported in the spring cover.

[0013] Another technical solution of the utility model is that on the basis of the above, a plurality of second sealing rings for sealing are further provided on the surface of the spring cover in contact with the main valve block, and the structure of the second sealing ring is consistent with that of the first sealing ring.

[0014] Another technical solution of the utility model is that on the basis of the above, a third oil port, a fourth oil port, a fifth oil port and a sixth oil port are respectively provided on both sides of the main valve core, and the third oil port, the fourth oil port, the fifth oil port and the sixth oil port are cross-arranged with the first oil port and the second oil port.

[0015] On the other hand, the utility model further proposes an engineering machine, comprising a hydraulic system, wherein the hydraulic system is provided with a solenoid valve assembly, and the solenoid valve assembly is the solenoid valve assembly as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0017] Figure 1 This is a structural schematic diagram of a solenoid valve assembly of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the main view;

[0019] Figure 3 for Figure 1 Bottom view of

[0020] Figure 4 for Figure 2 Schematic cross-sectional view of CC;

[0021] Figure 5 for Figure 2 Schematic diagram of the cross-section of BB.

[0022] The corresponding relationship of the reference numerals is:

[0023] 1 Pressure reducing valve 2 First plug 3 Second plug

[0024] 4 shuttle valve 5 third plug 6 oil outlet

[0025] 7 Spring cover 8 Spring chamber 9 Main spring

[0026] 10 first sealing ring 11 main valve block 12 second sealing ring

[0027] 13 control valve block 14 oil return port 15 working oil port

[0028] 16 Oil inlet 17 Solenoid valve 18 Main valve core

[0029] 19 First oil port 20 Second oil port 21 Third oil port

[0030] 22 Fourth oil port 23 Fifth oil port 24 Sixth oil port

[0031] 25 electromagnetic valve core 26 electromagnetic spring DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention. In addition, those skilled in the art can make corresponding combinations of the features in the embodiments and in different embodiments of the present invention according to the description of this document.

[0033] The utility model embodiments are as follows, see Figures 1 to 5The solenoid valve assembly shown in the figure specifically includes a main valve block 11, on which a detachable solenoid valve 17 and a pressure reducing valve 1 are respectively provided, the pressure reducing valve 1 is specifically arranged on one side of the shuttle valve 4, and the shuttle valve 4 and a plurality of oil passages are also provided in the main valve block 11. A valve cavity is also provided in the main valve block 11, and a plurality of oil ports are provided in the valve cavity, and a movable main valve core 18 is provided in the valve cavity. The oil ports specifically include a first oil port 19 and a second oil port 20, and the first oil port 19 and the second oil port 20 alternately inlet and return oil, and the pressure reducing valve 1 and the shuttle valve 4 are respectively connected to the first oil port 19 and the second oil port 20 through the oil passages. Compared with the electromagnetic assembly of the existing structure, the electromagnetic valve assembly of this structure has a pressure reducing valve 1 and a shuttle valve 4 simultaneously arranged on the main valve block 11. The shuttle valve 4 uses the high pressure between the first oil port 19 and the second oil port 20 to control the oil source, and there is no need to provide control oil externally. The pressure reducing valve 1 can effectively reduce the impact of high-pressure oil on the control oil circuit. Therefore, it has the advantages of effectively reducing the impact, extending the service life, and lowering the cost of use.

[0034] Based on the above embodiment, in another embodiment of the utility model, as Figures 1 to 5 As shown, one end of the main valve block 11 , specifically the left end shown in the figure, is also provided with a control valve block 13 , and the solenoid valve 17 and the pressure reducing valve 1 are both arranged on the control valve block 13 .

[0035] Based on the above embodiment, in another embodiment of the utility model, as Figure 4 and Figure 5 As shown, one side of the pressure reducing valve 1, i.e. Figure 4 The left side is also provided with an oil outlet 6, and the main valve block 11 and the control valve block 13 are also provided with a plurality of plugs. The plugs specifically include a first plug 2, a second plug 3 and a third plug 5, and the first plug 2 is provided on the end face of the control valve block 13. The second plug 3 and the third plug 5 are provided on the main valve block 11. The surface of the control valve block 13 in contact with the main valve block 11 is also provided with a plurality of first sealing rings 10 for sealing.

[0036] Based on the above embodiment, in another embodiment of the utility model, as Figure 4 and Figure 5 As shown, the control valve block 13 is further provided with a receiving chamber (not shown in the figure), in which a movable electromagnetic valve core 25 is provided. One end of the electromagnetic valve core 25, i.e. Figure 5 The upper end is also sleeved with an electromagnetic spring 26, which is used to assist the electromagnetic valve core 25 in resetting.

[0037] Based on the above embodiment, in another embodiment of the utility model, as Figure 4 and Figure 5 As shown, one side of the solenoid valve core 25, namely Figure 5The left side is also provided with an oil inlet 16 and a working oil port 15, and the end of the solenoid valve core 25 is away from the solenoid spring 26, that is, Figure 5 The lower end shown is also provided with an oil return port 14 which can be communicated with the oil inlet port 16 and the working oil port 15.

[0038] Based on the above embodiment, in another embodiment of the utility model, as Figure 5 As shown, a spring cover 7 is further provided at one end of the main valve block 11 which faces away from the solenoid valve 17 , namely the right end as shown in the figure, and a spring chamber 8 is further provided in the spring cover 7 .

[0039] Based on the above embodiment, in another embodiment of the utility model, as Figure 5 As shown, a main spring 9 is also provided in the spring chamber 8. One end of the main spring 9, namely the left end shown in the figure, is sleeved on the valve core, and the other end of the main spring 9, namely the right end shown in the figure, is supported in the spring cover 7. The main spring 9 is used to assist the main valve core 18 in resetting.

[0040] Based on the above embodiment, in another embodiment of the utility model, as Figure 4 and Figure 5 As shown, a plurality of second sealing rings 12 for sealing are provided on the contact surface between the spring cover 7 and the main valve block 11 . The second sealing rings 12 have the same structure and material as the first sealing rings 10 .

[0041] Based on the above embodiment, in another embodiment of the utility model, as Figure 5 As shown, a third oil port 21, a fourth oil port 22, a fifth oil port 23 and a sixth oil port 24 are respectively provided on both sides of the main valve core 18, and the third oil port 21, the fourth oil port 22, the fifth oil port 23 and the sixth oil port 24 are cross-arranged with the first oil port 19 and the second oil port 20. More specifically, in the valve cavity of the main valve block 11, from left to right, there are respectively the third oil port 21, the first oil port 19, the fourth oil port 22, the fifth oil port 23, the second oil port 20 and the sixth oil port 24.

[0042] The solenoid valve assembly of the above structure is provided with a pressure reducing valve 1 and a shuttle valve 4 on the main valve block 11 at the same time. During operation, the shuttle valve 4 can use the high pressure between the first oil port 19 and the second oil port 20 to control the oil source without providing control oil externally. The pressure reducing valve 1 can effectively reduce the impact of the high-pressure oil on the control oil circuit. Therefore, it has the advantages of effectively reducing the impact, extending the service life, and lowering the cost of use.

[0043] In addition, the utility model also proposes an engineering machine, including a hydraulic system, wherein a solenoid valve assembly is provided in the hydraulic system, and the solenoid valve assembly is specifically the solenoid valve assembly as described above.

[0044] The engineering machinery of this structure correspondingly has the advantages possessed by the above-mentioned solenoid valve assembly.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A solenoid valve assembly, characterized in that: It comprises a main valve block, on which a detachable electromagnetic valve and a pressure reducing valve are respectively arranged, wherein the pressure reducing valve is arranged on one side of the electromagnetic valve, and a shuttle valve and a plurality of oil passages are also arranged in the main valve block; The main valve block is also provided with a valve cavity, the valve cavity is provided with a plurality of oil ports, and the valve cavity is provided with a movable main valve core; The oil port comprises a first oil port and a second oil port, the first oil port and the second oil port alternately take in and return oil, and the pressure reducing valve and the shuttle valve are respectively connected to the first oil port and the second oil port through the oil passage.

2. The solenoid valve assembly according to claim 1, characterized in that: A control valve block is also provided at one end of the main valve block, and the solenoid valve and the pressure reducing valve are arranged on the control valve block.

3. The solenoid valve assembly according to claim 2, characterized in that: An oil outlet is also provided on one side of the pressure reducing valve, and a plurality of plugs are also provided on the main valve block and the control valve block; A plurality of first sealing rings for sealing are also arranged on the surface of the control valve block in contact with the main valve block.

4. The solenoid valve assembly according to claim 3, characterized in that: The control valve block is further provided with an accommodating cavity, in which a movable electromagnetic valve core is arranged, and one end of the electromagnetic valve core is also sleeved with an electromagnetic spring.

5. The solenoid valve assembly according to claim 4, characterized in that: An oil inlet and a working oil port are also provided on one side of the electromagnetic valve core, and an oil return port which can communicate with the oil inlet and the working oil port is also provided on one end of the electromagnetic valve core away from the electromagnetic spring.

6. The solenoid valve assembly according to claim 5, characterized in that: A spring cover is also provided at one end of the main valve block away from the solenoid valve, and a spring cavity is also provided in the spring cover.

7. The solenoid valve assembly according to claim 6, characterized in that: A main spring is also arranged in the spring cavity. One end of the main spring is sleeved on the valve core, and the other end of the main spring is supported in the spring cover.

8. The solenoid valve assembly according to claim 7, characterized in that: A plurality of second sealing rings for sealing are also arranged on the surface of the spring cover in contact with the main valve block, and the structure of the second sealing ring is consistent with that of the first sealing ring.

9. The solenoid valve assembly according to claim 8, characterized in that: A third oil port, a fourth oil port, a fifth oil port and a sixth oil port are respectively disposed on both sides of the main valve core, and the third oil port, the fourth oil port, the fifth oil port and the sixth oil port are arranged crosswise with the first oil port and the second oil port.

10. An engineering machine, comprising a hydraulic system, wherein the hydraulic system is provided with a solenoid valve assembly, characterized in that: The solenoid valve assembly is the solenoid valve assembly according to any one of claims 1 to 9.

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