Reversing and resetting structure of electro-hydraulic control integrated shuttle valve

Abstract

The utility model discloses a reversing reset structure of an electro-hydraulic control integrated shuttle valve, and relates to the technical field of hydraulic valves. Comprising a valve body, a valve element and an electromagnet, the two ends of the valve element extend out of the valve body, a reversing assembly is arranged at the bottom end of the valve body, a reset assembly is arranged at the top end of the valve body, the electromagnet is further arranged at the top end of the valve body, and a first electric control oil port and a second electric control oil port are formed in the bottom end of the electromagnet. The first electric control oil port and the second electric control oil port are installed in the valve body. The built-in reversing shuttle valve and the reset shuttle valve are adopted, the flow channels are arranged in the reversing assembly, the reset assembly and the valve body, compared with an electro-hydraulic integrated block adopted in the prior art, complex pipelines are reduced, and then the overall integration degree is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic valve technical field especially relates to the improvement of reversing valve structure of load sensitive proportional multiway valve. BACKGROUND

[0002] The reversing reset mechanism of the reversing valve of the load sensitive multiway valve is generally manually controlled and electrically controlled, one end of the valve core is a spring cover assembly, a spring and a check ring are arranged in the spring cavity, the upper and lower spring check rings are connected with the valve core through screws, a reset spring is arranged between the upper and lower check rings and is used for the automatic reset of the valve core, and the other end is a handle operating mechanism and is used for reversing. Figure 9 As shown in the prior art, when the reversing of the valve core is controlled by using the electric control and the hydraulic control, the electric-hydraulic composite block is connected outside the multiway valve to realize the switching of the electric control and the hydraulic control, this method adds oil port one 5 and oil port two 6 to the reset assembly and the reversing assembly, and further adds an electric-hydraulic integrated block 7, the electric-hydraulic integrated block 7 is provided with an electric control oil inlet 75, an electric control oil return port 76, a hydraulic control oil inlet one 73, a hydraulic control oil inlet two 74, an oil outlet one 71 and an oil outlet two 72, the oil port one 5 is connected with the oil outlet one 71 on the electric-hydraulic integrated block 7 through an oil pipe, and the oil port two 6 is connected with the oil outlet two 72 on the electric-hydraulic integrated block through an oil pipe. This method needs to additionally arrange the electric-hydraulic integrated block, which leads to complex installation, increased pipelines, large size, low integration degree and increased cost. SUMMARY

[0003] The utility model discloses to the above -mentioned problem, propose a kind of " built-in " electric control, hydraulic control switching function, and then reduce component, improve the reversing reset structure of electric-hydraulic control integrated shuttle valve of overall integration degree.

[0004] The technical scheme of the utility model discloses: including valve body, valve core and electromagnet, the valve core both ends extend out the valve body, be equipped with reversing assembly in the bottom of the valve body, be equipped with reset assembly in the top of the valve body, the top of the valve body is also equipped with electromagnet, the bottom of the electromagnet is equipped with electric control oil port one and electric control oil port two, electric control oil port one and electric control oil port two install in the valve body;

[0005] The reversing assembly is cuboid, the reversing cavity is formed in the top surface of the reversing assembly, the lower end of the valve core extends into the reversing cavity, the mounting hole is formed in the side surface of the reversing assembly and penetrates the reversing assembly, and the reversing oil port is formed in the surface of the reversing assembly.

[0006] The reset assembly comprises an end cover, a shell, an upper check ring, a reset spring and a lower check ring, a reset cavity is formed in the shell, the upper end of the valve core is connected with an extended valve core, the extended valve core extends to the reset cavity, the extended valve core is convex, the lower check ring is arranged at the convex step of the extended valve core, the upper check ring is arranged at the top of the extended valve core and opposite to the lower check ring, the reset spring is sleeved between the upper check ring and the lower check ring, the top of the shell is provided with the end cover, and a reset oil port is formed in the shell;

[0007] The reversing assembly is provided with a reversing spool valve arranging groove, a reversing spool valve flow channel one, a reversing spool valve flow channel two and a reversing spool valve flow channel three.

[0008] A reversing spool valve is arranged in the reversing spool valve arranging groove, the reversing spool valve flow channel one is connected with the reversing oil port and a reversing spool valve hole one, the reversing spool valve flow channel two is connected with the electric control oil port one and a reversing spool valve hole two, and the reversing spool valve flow channel three is connected with the reversing cavity and a reversing spool valve hole three.

[0009] The reset assembly is provided with a reset spool valve arranging groove, a reset spool valve flow channel one, a reset spool valve flow channel two and a reset spool valve flow channel three.

[0010] A reset spool valve is arranged in the reset spool valve arranging groove, the reset spool valve flow channel one is connected with the reset oil port and a reset spool valve hole one, the reset spool valve flow channel two is connected with the electric control oil port two and a reset spool valve hole two, and the reset spool valve flow channel three is connected with the reset cavity and a reset spool valve hole three.

[0011] Further, a groove is formed on the reversing spool valve, and a sealing ring one is arranged on the groove.

[0012] Further, a groove is formed on the reset spool valve, and a sealing ring two is arranged on the groove.

[0013] Further, a transition plate is arranged between the top of the valve body and the bottom of the shell.

[0014] The reversing spool valve and the reset spool valve are arranged in the valve body, the flow channels are arranged in the reversing assembly, the reset assembly and the valve body, compared with the electro-hydraulic integrated block in the prior art, the number of complex pipelines is reduced, and the integration degree is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model,

[0016] Figure 2 is a three-dimensional schematic view of the reversing assembly in the utility model,

[0017] Figure 3 is a structural schematic view of the reversing assembly in the utility model,

[0018] Figure 4 is the structure diagram of the reset assembly in the utility model,

[0019] Figure 5 is the three-dimensional diagram of the reset assembly in the utility model,

[0020] Figure 6 is the working state of the shuttle valve assembly in the utility model Figure 1 ,

[0021] Figure 7 is the working state of the shuttle valve assembly in the utility model Figure 2 ,

[0022] Figure 8 is the structure diagram of the electric control oil port in the utility model,

[0023] Figure 9 is the working principle diagram of the shuttle valve assembly in the utility model,

[0024] Figure 10 the structure diagram of the background art,

[0025] In the drawing: 1 is a reversing assembly, 11 is a reversing oil port, 12 is a reversing shuttle valve, 121 is a reversing shuttle valve hole one, 122 is a reversing shuttle valve hole two, 123 is a reversing shuttle valve hole three, 124 is a sealing ring one, 13 is a reversing shuttle valve flow channel one, 14 is a reversing shuttle valve flow channel two, 15 is a reversing shuttle valve flow channel three, 16 is a reversing cavity, 17 is a steel ball one, 18 is a mounting hole,

[0026] 2 is a valve body,

[0027] 3 is a valve core,

[0028] 4 is a reset assembly, 41 is an end cover, 42 is a shell, 43 is an extended valve core, 44 is a transition plate, 45 is an upper retainer ring, 46 is a reset spring, 47 is a screw, 48 is a lower retainer ring, 49 is a reset oil port, 410 is a reset shuttle valve, 4101 is a reset shuttle valve hole one, 4102 is a reset shuttle valve hole two, 4103 is a reset shuttle valve hole three, 4104 is a sealing ring two, 411 is a reset shuttle valve flow channel one, 412 is a reset shuttle valve flow channel two, 413 is a reset shuttle valve flow channel three, 414 is a reset cavity, 415 is a steel ball two,

[0029] 5 is an oil port one, 6 is an oil port two, 7 is an electro-hydraulic integrated block, 71 is an oil outlet one, 72 is an oil outlet two, 73 is a hydraulic control oil inlet one, 74 is a hydraulic control oil inlet two, 75 is an electric control oil inlet, 76 is an electric control oil return,

[0030] 8 is an electromagnet, 81 is an electric control oil port one, 82 is an electric control oil port two,

[0031] Figure 6 , 7 The arrows in the diagram indicate the direction of hydraulic oil flow. Detailed Implementation

[0032] To make the purpose, technical solution, and beneficial technical effects of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0033] For simplicity, this application only explicitly discloses some numerical ranges. However, any lower limit can be combined with any upper limit to form a range not explicitly stated; and any lower limit can be combined with other lower limits to form a range not explicitly stated, just as any upper limit can be combined with any other upper limit to form a range not explicitly stated. Furthermore, although not explicitly stated, every point or individual value between the endpoints of the range is included within that range. Therefore, each point or individual value can be used as its own lower or upper limit and combined with any other point or individual value or with other lower or upper limits to form a range not explicitly stated.

[0034] In the description of this application, it should be noted that, unless otherwise stated, "above" and "below" include the stated number, and "multiple" in "one or more" means two or more.

[0035] The foregoing description of this application is not intended to describe every disclosed implementation or method. Instead, the following description provides more specific examples of exemplary embodiments. Throughout the application, guidance is provided through a series of embodiments that can be used in various combinations. The examples listed are representative only and should not be construed as exhaustive.

[0036] The following is in conjunction with the appendix Figures 1-9 The embodiments of this utility model are described in detail below.

[0037] This utility model includes a valve body 2, a valve core 3, and an electromagnet 8. Both ends of the valve core 3 extend out of the valve body 2. A reversing assembly 1 is provided at the bottom of the valve body 2, and a reset assembly 4 is provided at the top of the valve body 2. An electromagnet 8 is also provided at the top of the valve body 2. An electrically controlled oil port 1 81 and an electrically controlled oil port 2 82 are provided at the bottom of the electromagnet. The electrically controlled oil port 1 81 and the electrically controlled oil port 2 82 are installed inside the valve body 2.

[0038] The reversing assembly 1 is rectangular. A reversing cavity 16 is provided on the top surface of the reversing assembly 1. The lower end of the valve core 3 extends into the reversing cavity 16. A mounting hole 18 is provided on the side of the reversing assembly 1, which passes through the reversing cavity 16 and penetrates the reversing assembly 1. A reversing oil port 11 is provided on the surface of the reversing assembly 1.

[0039] The reset assembly 4 comprises an end cover 41, a shell 42, an upper check ring 45, a reset spring 46 and a lower check ring 48, the shell is provided with a reset cavity 414, the upper end of the valve core 3 is connected with an extension valve core 43, the extension valve core 43 extends to the reset cavity 414, the extension valve core 43 is convex, the lower check ring 48 is arranged at the convex step of the extension valve core 43, the upper end of the extension valve core 43 is provided with the upper check ring 45 opposite to the lower check ring 48, the reset spring 46 is sleeved between the upper check ring 45 and the lower check ring 48, the top of the shell 42 is provided with the end cover 41, and the shell 42 is provided with a reset oil port 49.

[0040] The reversing assembly 1 is provided with a reversing shuttle valve setting groove, a reversing shuttle valve flow channel one 13, a reversing shuttle valve flow channel two 14 and a reversing shuttle valve flow channel three 15.

[0041] The reversing shuttle valve 12 is arranged in the reversing shuttle valve setting groove, the reversing shuttle valve flow channel one 13 communicates the reversing oil port 11 with a reversing shuttle valve hole one 121, the reversing shuttle valve flow channel two 14 communicates the electric control oil port one 81 with a reversing shuttle valve hole two 122, and the reversing shuttle valve flow channel three 15 communicates the reversing cavity 16 with a reversing shuttle valve hole three 123.

[0042] When the reversing assembly 1 is controlled by electricity, the oil pressure in the reversing shuttle valve flow channel two 14 is greater than the oil pressure in the reversing shuttle valve flow channel one 13, the steel ball one 17 is pressed against the reversing shuttle valve hole one 121 under the action of the hydraulic oil, at this time, the hydraulic oil flows out from the electric control oil port one 81, flows into the reversing shuttle valve 12 through the reversing shuttle valve flow channel two 14, and then flows into the reversing cavity 16 through the reversing shuttle valve hole three 123 and the reversing shuttle valve flow channel three 15, so as to control the upward movement of the valve core 3, thereby realizing the reversing function.

[0043] When the reversing assembly 1 is controlled by liquid, the oil pressure in the reversing shuttle valve flow channel two 14 is less than the oil pressure in the reversing shuttle valve flow channel one 13, the steel ball one 17 is pressed against the reversing shuttle valve hole two 122 under the action of the hydraulic oil, at this time, the hydraulic oil flows into the reversing shuttle valve 12 from the reversing oil port 11 through the reversing shuttle valve hole one 121, and then flows into the reversing cavity 16 through the reversing shuttle valve hole three 123 and the reversing shuttle valve flow channel three 15, so as to control the upward movement of the valve core 3, thereby realizing the reversing function.

[0044] The reset assembly 4 is provided with a reset shuttle valve setting groove, a reset shuttle valve flow channel one 411, a reset shuttle valve flow channel two 412 and a reset shuttle valve flow channel three 413.

[0045] The reset shuttle valve 410 is arranged in the reset shuttle valve setting groove, the reset shuttle valve flow channel one 411 communicates the reset oil port 49 with a reset shuttle valve hole one 4101, the reset shuttle valve flow channel two 412 connects the electric control oil port two 82 with a reset shuttle valve hole two 4102, and the reset shuttle valve flow channel three 413 connects the reset cavity 414 with a reset shuttle valve hole three 4103.

[0046] When the reset assembly 4 is electrically controlled, the oil pressure in the reset spool valve flow passage two 412 is greater than the oil pressure in the reset spool valve flow passage one 411, the steel ball two 415 is pressed against the reset spool valve hole one 4101 under the action of the hydraulic oil, at this time, the hydraulic oil flows out from the electric control oil port two 82, flows into the reset spool valve 410 through the reset spool valve flow passage two 412, and then flows into the reset cavity 414 through the reset spool valve flow passage three 413 from the reset spool valve hole three 4103, so as to control the spool to move downward, and realize the reversing function.

[0047] When the reset assembly 4 is hydraulically controlled, the oil pressure in the reset spool valve flow passage two 412 is less than the oil pressure in the reset spool valve flow passage one 411, the steel ball two 415 is pressed against the reset spool valve hole two 4102 under the action of the hydraulic oil, at this time, the hydraulic oil flows into the reset spool valve 410 from the reset oil port 49 through the reset spool valve hole one 4101, and then flows into the reset cavity 414 through the reset spool valve flow passage three 413 from the reset spool valve hole three 4103, so as to control the spool to move downward, and realize the reversing function.

[0048] Further, a groove is formed on the reversing spool valve 12, and a sealing ring one 124 is arranged on the groove to prevent the hydraulic oil from flowing out.

[0049] Further, a groove is formed on the reset spool valve 410, and a sealing ring two 4104 is arranged on the groove to prevent the hydraulic oil from flowing out.

[0050] Further, a transition plate 44 is arranged between the top of the valve body 2 and the bottom of the shell 42. In order to ensure the consistency of the installation hole size of the valve body 2 and the reset assembly 4, increase the universality of the product, the threaded hole position on the valve body 2 remains unchanged, the transition plate 44 is increased, and two groups of installation holes are arranged on the transition plate 44, one group of installation holes is connected with the valve body 2 through fasteners, and the other group of installation holes is connected with the reset assembly 4 through fasteners.

[0051] It should be noted that the above specific embodiments are only preferred embodiments of the utility model and the technical principles applied. Those skilled in the art should understand that, on the basis of the technical content disclosed in the present application file, various modifications, equivalent replacements, changes and the like can be made to the utility model. However, as long as these changes do not deviate from the spirit of the utility model, they should be within the protection scope of the utility model. In addition, some terms used in the application specification and claims are not limited, but only for the convenience of description.

Claims

1. A reversing reset structure of an electro-hydraulic integrated shuttle valve, comprising a valve body (2), a valve core (3) and an electromagnet (8), both ends of the valve core (3) extending out of the valve body (2), a reversing assembly (1) being arranged at the bottom end of the valve body (2), a reset assembly (4) being arranged at the top end of the valve body (2), and the top end of the valve body (2) being further provided with the electromagnet (8), the bottom end of the electromagnet being provided with an electric control oil port one (81) and an electric control oil port two (82), and the electric control oil port one (81) and the electric control oil port two (82) being installed in the valve body (2); the reversing assembly (1) is a cuboid, a reversing cavity (16) being arranged on the top surface of the reversing assembly (1), the lower end of the valve core (3) extending into the reversing cavity (16), an installation hole (18) being arranged on the side surface of the reversing assembly (1) and penetrating through the reversing assembly (1), and a reversing oil port (11) being arranged on the surface of the reversing assembly (1); the reset assembly (4) comprises an end cover (41), a shell (42), an upper retainer ring (45), a reset spring (46) and a lower retainer ring (48), a reset cavity (414) being arranged in the shell, an extended valve core (43) being connected to the upper end of the valve core (3) and extending into the reset cavity (414), the extended valve core (43) being convex, the lower retainer ring (48) being arranged at the convex step of the extended valve core (43), the upper retainer ring (45) being arranged on the top of the extended valve core (43) and opposite to the lower retainer ring (48), the reset spring (46) being sleeved between the upper retainer ring (45) and the lower retainer ring (48), and the end cover (41) being arranged on the top of the shell (42), and a reset oil port (49) being arranged on the shell (42); characterized in that the reversing assembly (1) is provided with a reversing shuttle valve setting groove, a reversing shuttle valve flow passage one (13), a reversing shuttle valve flow passage two (14) and a reversing shuttle valve flow passage three (15); a reversing shuttle valve (12) is arranged in the reversing shuttle valve setting groove, the reversing shuttle valve flow passage one (13) connects the reversing oil port (11) and a reversing shuttle valve hole one (121), the reversing shuttle valve flow passage two (14) connects the electric control oil port one (81) and a reversing shuttle valve hole two (122), and the reversing shuttle valve flow passage three (15) connects the reversing cavity (16) and a reversing shuttle valve hole three (123); the reset assembly (4) is provided with a reset shuttle valve setting groove, a reset shuttle valve flow passage one (411), a reset shuttle valve flow passage two (412) and a reset shuttle valve flow passage three (413); a reset shuttle valve (410) is arranged in the reset shuttle valve setting groove, the reset shuttle valve flow passage one (411) connects the reset oil port (49) and a reset shuttle valve hole one (4101), the reset shuttle valve flow passage two (412) connects the electric control oil port two (82) and a reset shuttle valve hole two (4102), and the reset shuttle valve flow passage three (413) connects the reset cavity (414) and a reset shuttle valve hole three (4103).

2. The reversing reset structure of an electro-hydraulic control integrated spool valve according to claim 1, characterized in that, A circle of notches is formed on the reversing shuttle valve (12), and a sealing ring I (124) is arranged on the notches.

3. The reversing reset structure of an electro-hydraulic control integrated spool valve according to claim 1, characterized in that, A circle of notches is formed on the reset shuttle valve (410), and a sealing ring II (4104) is arranged on the notches.

4. The reversing reset structure of an electro-hydraulic control integrated spool valve according to claim 1, characterized in that, A transition plate (44) is arranged between the top of the valve body (2) and the bottom of the shell (42).

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