Hydraulic oil way switching ball valve for excavator accessory

Abstract

The utility model discloses a hydraulic oil circuit switching ball valve for excavator accessories, which comprises a valve body, the middle position of the valve body is movably connected with a chaining pin shaft, a first ball valve steel ball is arranged above the chaining pin shaft, a second ball valve steel ball is arranged below the chaining pin shaft, and the first ball valve steel ball is connected with the second ball valve steel ball. A slant oil port A1, a slant oil port C1 and an oil port H are formed in one side outside the valve body, a slant oil port A2, a slant oil port C2 and an oil port E are formed in the opposite side outside the valve body, the upper portion in an inner cavity of the valve body is divided into an oil way A and an oil way B through a first ball valve steel ball, and the lower portion in the inner cavity of the valve body is divided into an oil way C and an oil way D through a second ball valve steel ball. The oil way B and the oil way D are each provided with a plug, the other side of the valve body is provided with an oil port F and an oil port G. The two-position six-way reversing requirement is met through the two ball valves connected in series, eight reversing oil ports can be arranged according to the requirement of the part, and the structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a hydraulic oil circuit switching ball valve for excavator accessories. Background Art

[0002] An excavator, also known as excavating machinery, is an earth-moving machine that uses a bucket to dig materials above or below the surface of the machine and load them into transport vehicles or unload them to a stockpile.

[0003] In the prior art, with the increase in freedom in the design of excavator attachments, the number of hydraulic pipelines has doubled, the pipeline distribution is very tight, and the oil port position must meet specific position requirements. Currently, there is no ball valve product on the market that can achieve two-position six-way. The existing two-position six-way valve technology and structure are large in size and cannot meet our use requirements for compact structure and directional oil port distribution.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a hydraulic oil circuit switching ball valve for excavator accessories to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A hydraulic oil circuit switching ball valve for excavator accessories comprises a valve body, wherein a link pin shaft for driving a steel ball to rotate is movably connected to the middle position of the valve body, a first ball valve steel ball is arranged above the link pin shaft, a second ball valve steel ball is arranged below the link pin shaft, steel ball sealing gaskets are arranged at the outer walls on both sides of the first ball valve steel ball and the second ball valve steel ball in the vertical direction of the axis of the link pin shaft, an A1 oblique oil port, a C1 oblique oil port and an H oil port are opened on the outer side of the valve body, an A2 oblique oil port, a C2 oblique oil port and an E oil port are opened on the opposite side of the valve body, the upper part of the inner cavity of the valve body is divided into an A oil circuit and a B oil circuit by the first ball valve steel ball, and the lower part of the inner cavity of the valve body is divided into a C oil circuit and a D oil circuit by the second ball valve steel ball, plugs are arranged on the B oil circuit and the D oil circuit, and an F oil port and a G oil port are opened on the other side of the valve body.

[0008] As a further solution of the utility model, the first ball valve steel ball and the second ball valve steel ball are connected in series through the linking pin shaft, and the first ball valve steel ball and the second ball valve steel ball are both provided with oil ports.

[0009] As a further solution of the utility model, the A oil circuit is connected to the A1 oblique oil port and the A2 oblique oil port, and the C oil circuit is connected to the C1 oblique oil port and the C2 oblique oil port.

[0010] As a further solution of the utility model, the B oil circuit is connected to the E oil port, and the D oil circuit is connected to the H oil port.

[0011] As a further solution of the utility model, the first ball valve steel ball is provided with M ring grooves on the outside, and the second ball valve steel ball is provided with N ring grooves on the outside.

[0012] As a further solution of the utility model, the F oil port is communicated with the M ring groove, and the G oil port is communicated with the N ring groove.

[0013] The beneficial effects of the utility model are:

[0014] 1. Two ball valves in series are used to achieve the two-position six-way switching requirement.

[0015] 2. 8 reversing oil ports can be arranged according to our needs, with a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of a hydraulic oil circuit switching ball valve for excavator attachments according to an embodiment of the utility model;

[0018] Figure 2 A hydraulic oil circuit switching ball valve for excavator attachments according to an embodiment of the utility model Figure 1 Symmetrical graph;

[0019] Figure 3 It is a first cross-sectional view of a hydraulic oil circuit switching ball valve for excavator attachments according to an embodiment of the utility model;

[0020] Figure 4 It is a second cross-sectional view of a hydraulic oil circuit switching ball valve for excavator attachments according to an embodiment of the utility model.

[0021] In the figure:

[0022] 1. Valve body; 2. Linking pin; 3. First ball valve steel ball; 4. Second ball valve steel ball; 5. Steel ball sealing gasket; 6. A1 oblique oil port; 7. C1 oblique oil port; 8. H oil port; 9. A2 oblique oil port; 10. C2 oblique oil port; 11. E oil port; 12. A oil circuit; 13. B oil circuit; 14. C oil circuit; 15. D oil circuit; 16. Plug; 17. F oil port; 18. G oil port; 19. M ring groove; 20. N ring groove. DETAILED DESCRIPTION

[0023] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] According to an embodiment of the utility model, a hydraulic oil circuit switching ball valve for excavator accessories is provided.

[0025] Please refer to the instruction manual Figure 1-4According to an embodiment of the utility model, a hydraulic oil circuit switching ball valve for excavator accessories comprises a valve body 1, a link pin 2 for driving a steel ball to rotate is movably connected to the middle position of the valve body 1, a first ball valve steel ball 3 is arranged above the link pin 2, a second ball valve steel ball 4 is arranged below the link pin 2, the first ball valve steel ball 3 and the second ball valve steel ball 4 are provided with steel ball sealing gaskets 5 at the outer walls on both sides of the vertical direction of the axis of the link pin 2, an A1 oblique oil port 6, a C1 oblique oil port 7 and an H oil port 8 are opened on one side outside the valve body 1, an A2 oblique oil port 9, a C2 oblique oil port 10 and an E oil port 11 are opened on the opposite side outside the valve body 1, the upper part of the inner cavity of the valve body 1 is divided into an A oil circuit 12 and a B oil circuit 13 by the first ball valve steel ball 3, and the lower part of the inner cavity of the valve body 1 is divided into a C oil circuit by the second ball valve steel ball 4 Oil circuit 14 and D oil circuit 15, the B oil circuit 13 and the D oil circuit 15 are both provided with plugs 16, the other side of the valve body 1 is provided with F oil port 17 and G oil port 18, the first ball valve steel ball 3 and the second ball valve steel ball 4 are connected in series through the link pin 2, the first ball valve steel ball 3 and the second ball valve steel ball 4 are both provided with oil ports, the A oil circuit 12 is connected with the A1 oblique oil port 6 and the A2 oblique oil port 9, the C oil circuit 14 is connected with the C1 oblique oil port 7 and the C2 oblique oil port 10, the B oil circuit 13 is connected with the E oil port 11, the D oil circuit 15 is connected with the H oil port 8, the first ball valve steel ball 3 is provided with an M ring groove 19 on the outside, the second ball valve steel ball 4 is provided with an N ring groove 20 on the outside, the F oil port 17 is communicated with the M ring groove 19, and the G oil port 18 is communicated with the N ring groove 20.

[0026] The two-position six-way switching requirement is achieved through two ball valves connected in series. Eight switching oil ports can be arranged according to our needs, and the structure is compact.

[0027] When in use, the first ball valve steel ball 3 and the second ball valve steel ball 4 are driven to rotate by manually twisting the connecting pin 2, and one oil hole of the steel ball is always connected to the ring groove in the valve body 1, thereby realizing the mutual switching of the oil circuit (M ring groove 19-A oil circuit 12 and M ring groove 19-B oil circuit 13) (N ring groove 20-C oil circuit 14 and N ring groove 20-D oil circuit 15). The A oil circuit 12 and the C oil circuit 14 are respectively divided into two interconnected A1 oblique oil ports 6 and A2 oblique oil ports 9 and C1 oblique oil ports 7 and C2 oblique oil ports 10, thereby being able to drive the two cylinders to act simultaneously.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic oil circuit switching ball valve for excavator accessories, comprising a valve body (1), characterized in that: The middle position of the valve body (1) is movably connected with a link pin (2) for driving the steel ball to rotate, a first ball valve steel ball (3) is arranged above the link pin (2), and a second ball valve steel ball (4) is arranged below the link pin (2), and steel ball sealing gaskets (5) are arranged on the outer walls of the first ball valve steel ball (3) and the second ball valve steel ball (4) on both sides of the vertical direction of the axis of the link pin (2), and an A1 oblique oil port (6), a C1 oblique oil port (7) and an H oil port (8) are opened on one side of the valve body (1). The opposite side of the valve body (1) is provided with an A2 oblique oil port (9), a C2 oblique oil port (10) and an E oil port (11); the upper part of the inner cavity of the valve body (1) is divided into an A oil circuit (12) and a B oil circuit (13) by a first ball valve steel ball (3); the lower part of the inner cavity of the valve body (1) is divided into a C oil circuit (14) and a D oil circuit (15) by a second ball valve steel ball (4); plugs (16) are provided on the B oil circuit (13) and the D oil circuit (15); and the other side of the valve body (1) is provided with an F oil port (17) and a G oil port (18).

2. The hydraulic oil circuit switching ball valve for excavator attachments according to claim 1, characterized in that: The first ball valve steel ball (3) and the second ball valve steel ball (4) are connected in series via the linking pin shaft (2), and both the first ball valve steel ball (3) and the second ball valve steel ball (4) are provided with oil ports.

3. The hydraulic oil circuit switching ball valve for excavator attachments according to claim 2, characterized in that: The A oil circuit (12) is in communication with the A1 oblique oil port (6) and the A2 oblique oil port (9), and the C oil circuit (14) is in communication with the C1 oblique oil port (7) and the C2 oblique oil port (10).

4. The hydraulic oil circuit switching ball valve for excavator attachments according to claim 3 is characterized in that: The B oil path (13) is in communication with the E oil port (11), and the D oil path (15) is in communication with the H oil port (8).

5. The hydraulic oil circuit switching ball valve for excavator attachments according to claim 4, characterized in that: The first ball valve steel ball (3) is provided with an M ring groove (19) on the outside, and the second ball valve steel ball (4) is provided with an N ring groove (20) on the outside.

6. The hydraulic oil circuit switching ball valve for excavator attachments according to claim 5, characterized in that: The F oil port (17) is in communication with the M ring groove (19), and the G oil port (18) is in communication with the N ring groove (20).

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