An assembly for detecting internal hydraulic manifold defects

Abstract

A kind of assembly for detecting the internal oil passage defect of hydraulic integrated valve plate, including oil passage connecting block one, oil passage connecting block two, oil passage connecting block three, sealing block, joint and plug;Oil passage connecting block one, oil passage connecting block three inside are provided with a passageway one, oil passage connecting block two inside are provided with two passageways two, the port of passageway is equipped with annular sink, the binding surface of sealing block is equipped with circular sink, annular sink and circular sink are all installed with sealing ring, the oil passage connecting block one, oil passage connecting block two, oil passage connecting block three and oil passage sealing block are fixedly installed in the corresponding position on hydraulic integrated valve plate, with hydraulic integrated valve plate sealed butt joint, plug is used to block the single external interface of internal oil passage of hydraulic integrated valve plate, so that internal oil passage of hydraulic integrated valve plate at least forms a through oil passage, joint is sealedly connected in one end of the oil passage;Whether the oil passage is through or whether there is through defect is verified by injecting hydraulic oil through the joint.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic integrated valve plate detection technology, and in particular relates to a component for detecting internal oil circuit defects of hydraulic integrated valve plates. Background Technology

[0002] The hydraulic integrated valve plate is a core component of the hydraulic system. The valve plate contains multiple three-dimensional intersecting oil passages (see...). Figure 3 The oil circuits are machined by drilling or milling. Currently, the depth of these oil circuits can only be measured simply with calipers. It is impossible to test the continuity of each oil circuit inside the valve plate and whether there are through defects between multiple passages after the valve plate is manufactured. The test can only be performed after the valve plate is installed and during the operation of the hydraulic system. If the hydraulic system is not working properly, the pump, hydraulic valve, valve plate and other components need to be checked one by one, which is time-consuming. If the valve plate is the problem, all components need to be removed and replaced with a new valve plate, which seriously affects production efficiency. Summary of the Invention

[0003] This invention provides a component for detecting defects in the internal oil circuits of a hydraulic integrated valve plate. It can detect the continuity of each oil circuit inside the valve plate and whether there are through defects between multiple circuits after the valve plate is manufactured, thereby overcoming the shortcomings caused by problems after the valve plate is installed.

[0004] The technical solution adopted by this utility model is: a component for detecting defects in the internal oil circuit of a hydraulic integrated valve plate, including an oil circuit connecting block one, an oil circuit connecting block two, an oil circuit connecting block three, a sealing block, a connector, and a plug; the oil circuit connecting block one has a passage one inside, and both ports one of the passage one are located on the mating surface between the oil circuit connecting block one and the hydraulic integrated valve plate; the oil circuit connecting block two has two passage two inside, and all four ports two of the two passage two are located on the mating surface between the oil circuit connecting block two and the hydraulic integrated valve plate; the oil circuit connecting block three has a passage three inside, and both ports two of the passage three are located on the mating surface between the oil circuit connecting block three and the hydraulic integrated valve plate; the sealing block has two circular countersunks on the mating surface between the sealing block and the hydraulic integrated valve plate; the ports one, Port 2 and Port 3 are each equipped with an annular recess, and sealing rings are installed on both the annular and circular recesses. Oil circuit connecting blocks 1, 2, and 3, along with the oil circuit sealing block, are fixedly installed at corresponding positions on the hydraulic integrated valve plate, ensuring that Port 1, Port 2, Port 3, and the circular recess are sealed and connected to the corresponding external interfaces of the internal oil circuits of the hydraulic integrated valve plate. The plug is used to seal a single external interface of the internal oil circuit of the hydraulic integrated valve plate, ensuring that at least one continuous oil circuit is formed within the hydraulic integrated valve plate. The connector is sealed and connected to one end of this oil circuit. Hydraulic oil is injected through this connector to verify the continuity of the oil circuit. Furthermore, sealing the other end of the oil circuit verifies whether there are any through-thrust defects between different oil circuits within the hydraulic integrated valve plate.

[0005] The oil circuit connection block is a rectangular structure. The four corners of the rectangular structure are fixed to the hydraulic integrated valve plate by bolts. The passage is formed by two vertical blind holes and one horizontal blind hole. The opening end of the horizontal blind hole is blocked. A valve is installed on the horizontal blind hole and the valve is located between the two vertical blind holes.

[0006] The second oil circuit connection block is a rectangular structure. The four corners of the rectangular structure are fixed to the hydraulic integrated valve plate by bolts. The second passage is formed by two vertical blind holes and one horizontal blind hole. The opening end of the horizontal blind hole is blocked, and the two horizontal blind holes are arranged alternately.

[0007] The oil circuit connection block three is a rectangular structure. The four corners of the rectangular structure are fixed to the hydraulic integrated valve plate by bolts. The passage three is formed by two vertical blind holes three and one horizontal blind hole three, and the opening end of the horizontal blind hole three is blocked.

[0008] The sealing block is a rectangular structure, and its four corners are fixed to the hydraulic integrated valve plate by bolts.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. This utility model fixes oil circuit connecting blocks, sealing blocks, joints, and plugs of different structures to corresponding positions on the hydraulic integrated valve plate, so that the oil circuit inside the hydraulic integrated valve plate forms several through-paths. By injecting hydraulic oil into the path and performing a pressure holding test, the continuity of different oil circuits inside the valve plate and the presence of through defects can be effectively detected.

[0011] 2. This utility model enables the separate detection of the continuity of each oil passage inside the valve plate and the presence of through defects between multiple passages after the valve plate is manufactured, overcoming the shortcomings caused by problems after valve plate installation; moreover, it has a simple structure and low cost, making it suitable for widespread use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the detection state of this utility model;

[0013] Figure 2 This is a schematic diagram of the second detection state structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal oil circuit structure of the hydraulic integrated valve plate to be tested in this utility model;

[0015] Figure 4 This is a cross-sectional view of the structure of the oil circuit connecting block of this utility model;

[0016] Figure 5 , Figure 6 This is a schematic diagram of the structure of the oil circuit connection block II of this utility model;

[0017] Figure 7 This is a three-dimensional cross-sectional view of the oil circuit connecting block of this utility model;

[0018] Figure 8 This is a cross-sectional view of the sealing block structure of this utility model. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-8 The present invention will be described in detail with reference to specific embodiments.

[0020] An assembly for detecting defects in the internal oil circuit of a hydraulic integrated valve plate includes an oil circuit connection block 1, an oil circuit connection block 2, an oil circuit connection block 3, a sealing block 4, a connector 7, and a plug 8. The oil circuit connection block 1 has an internal passage 1-1, with both ports 1-2 of this passage 1-1 located on the mating surface between the oil circuit connection block 1 and the hydraulic integrated valve plate 6. The oil circuit connection block 2 has two internal passages 2-1, with all four ports 2-2 of these two passages 2-1 located on the mating surface between the oil circuit connection block 2 and the hydraulic integrated valve plate 6. The oil circuit connection block 3 has an internal passage 3-1, with both ports 3-2 of this passage 3-1 located on the mating surface between the oil circuit connection block 3 and the hydraulic integrated valve plate 6. The sealing block 4 has two circular countersunk edges 4-1 on its mating surface with the hydraulic integrated valve plate 6. The ports 1-2... Both port 2-2 and port 3-2 are provided with annular recesses 5, and sealing rings are installed on the annular recesses 5 and the circular recesses 4-1. The oil circuit connecting block 1, oil circuit connecting block 2, oil circuit connecting block 3, and oil circuit sealing block 4 are respectively fixedly installed at corresponding positions on the hydraulic integrated valve plate 6, and the port 1-2, port 2-2, port 3-2, and the circular recesses 4-1 are respectively sealed and connected to the corresponding external interfaces of the internal oil circuit of the hydraulic integrated valve plate 6. The plug 8 is used to block a single external interface of the internal oil circuit of the hydraulic integrated valve plate 6, so that the internal oil circuit of the hydraulic integrated valve plate 6 forms at least one through oil circuit. The connector 7 is sealed and connected to one end of the oil circuit. Hydraulic oil is injected through the connector 7 to verify whether the oil circuit is through. On this basis, the other end of the oil circuit is blocked to verify whether there is a through defect between different oil circuits inside the hydraulic integrated valve plate 6.

[0021] In one embodiment, the oil circuit connection block 1 is a rectangular structure, and the four corners of the rectangular structure are fixedly installed on the hydraulic integrated valve plate 6 by bolts 9. The passage 1-1 is formed by two vertical blind holes 1-3 and one horizontal blind hole 1-4, and the opening end of the horizontal blind hole 1-4 is blocked. A valve 1-5 is installed on the horizontal blind hole 1-4 and the valve 1-5 is located between the two vertical blind holes 1-3.

[0022] In one embodiment, the oil circuit connection block 2 is a rectangular structure, and the four corners of the rectangular structure are fixedly installed on the hydraulic integrated valve plate 6 by bolts 9. The passage 2-1 is formed by two vertical blind holes 2-3 and one horizontal blind hole 2-4, and the opening end of the horizontal blind hole 2-4 is blocked, and the two horizontal blind holes 2-4 are arranged alternately.

[0023] In one embodiment, the oil circuit connection block 3 is a rectangular structure, and the four corners of the rectangular structure are fixedly installed on the hydraulic integrated valve plate 6 by bolts 9. The passage 3-1 is formed by two vertical blind holes 3-3 and one horizontal blind hole 3-4, and the opening end of the horizontal blind hole 3-4 is blocked.

[0024] In one embodiment, the sealing block 4 is a rectangular structure, and the four corners of the rectangular structure are fixedly mounted on the hydraulic integrated valve plate 6 by bolts 9.

[0025] The specific testing method is as follows: The internal oil circuit layout of the hydraulic integrated valve plate 6 to be tested is as follows: Figure 3 As shown, black indicates the first group of oil circuits to be tested, and green indicates the second group of oil circuits to be tested.

[0026] A. The first set of oil circuits is tested using two oil circuit connectors (1), two oil circuit connectors (2), one oil circuit connector (3), one sealing block (4), one connector (7), and one plug (8). These components are respectively and sealed and installed at corresponding positions on the hydraulic integrated valve plate (6). The specific installation positions are as follows: Figure 1 As shown, oil line 21 6-21 is connected to oil line 11 6-11 and oil line 12 6-12. Oil line 11 6-11 is connected to oil line 13 6-13 through the first oil line connecting block 1 (1a). The other end of oil line 13 6-13 is connected to oil line 14 6-14 through the first oil line connecting block 2 (2). The other end of oil line 14 6-14 is connected to oil line 20 6-20. Oil line 12 6-12 and oil line 15 6-15 are connected through the second oil line connecting block 1 (1b). The other end of oil circuit 15 6-15 is connected to oil circuit 16 6-16 through oil circuit connecting block 3. The other end of oil circuit 16 6-16 is connected to oil circuit 17 6-17 and oil circuit 18 6-18. Oil circuit 17 6-17 is connected to oil circuit 19 6-19 through the second oil circuit connecting block 2. The port of oil circuit 18 6-18 is sealed by sealing block 4. The other end of oil circuit 19 6-19 is connected to oil circuit 20 6-20, connecting multiple oil circuits in the hydraulic integrated valve plate 6 into two passages.

[0027] To check if the first passage is open, connect the oil pump to connector 7. The two oil circuit connectors are 1a and 1b respectively. Open valve 1-5 on 1a and close valve 1-5 on 1b. Then inject hydraulic oil into the passage. After the hydraulic oil enters oil circuit 20 (6-20), it splits into two paths. One path flows through oil circuit 11 (6-11), oil circuit 13 (6-13), and oil circuit 14 (6-14) before flowing out through oil circuit 20 (6-20). This indicates that the passage is normal. If no hydraulic oil flows out, it means that the passage is not open.

[0028] To check for through-through defects between different oil circuits, seal the port of oil circuit 2020 with plug 8, start the oil pump to pressurize to 10MPa and maintain it for 1 hour, and observe the pressure change. If the pressure remains unchanged, it indicates that there are no through-through defects between this passage and other oil circuits; if the pressure drops, it indicates that there are through-through defects in the oil circuits inside the valve plate.

[0029] To test the second passage, close valves 1-5 on 1a and open valves 1-5 on 1b. Hydraulic oil should flow sequentially through oil passages 12 (6-12), 15 (6-15), 16 (6-16), 17 (6-17), 19 (6-19), and 20 (6-20). This indicates the passage is normal. If no hydraulic oil flows out, the passage is blocked. Seal the port of oil passage 20 (6-20) using plug 8. Start the oil pump to pressurize to 10 MPa and maintain this pressure for 1 hour. Observe the pressure change. If the pressure remains constant, there is no interconnection defect between this passage and other oil passages. If the pressure drops, there is an interconnection defect within the valve plate's oil passages.

[0030] B. Inspect the second set of oil circuits, and change the installation positions of the two oil circuit connection blocks 1 and connector 7. The specific installation positions are as follows: Figure 2 As shown, oil circuit 6-10 is connected to oil circuit 6-1 and oil circuit 6-2 respectively; oil circuit 6-1 is connected to oil circuit 6-3; oil circuit 6-2 and oil circuit 6-5 are connected through the first oil circuit connecting block 1a; the other end of oil circuit 6-3 is connected to oil circuit 6-4 through the first oil circuit connecting block 22; the other end of oil circuit 6-4 is connected to oil circuit 6-9; the other end of oil circuit 6-5 is connected to oil circuit 6-6 and oil circuit 7-7; oil circuit 6-6 is blocked by sealing block 4; oil circuit 7-7 and oil circuit 6-8 are connected through the second oil circuit connecting block 22; the other end of oil circuit 6-8 is connected to oil circuit 9-9, thus connecting the multiple oil circuits in the hydraulic integrated valve plate 6 into two paths.

[0031] During testing, open valve 1-5 on 1a and close valve 1-5 on 1b. Connect the oil pump to connector 7 and inject hydraulic oil into the passage. After entering oil circuit 6-10, the hydraulic oil splits into two paths. One path flows out sequentially through oil circuit 6-1, oil circuit 6-3, oil circuit 6-4, and oil circuit 6-9. This indicates that the passage is normal. If no hydraulic oil flows out, the passage is blocked. Seal the port of oil circuit 6-9 with plug 8, start the oil pump to pressurize to 10MPa and maintain it for 1 hour. Observe the pressure change. If the pressure remains unchanged, it indicates that there is no defect of mutual penetration between this passage and other oil circuits. If the pressure drops, it indicates that there is a defect of mutual penetration between the oil circuits inside the valve plate.

[0032] Close valve 1-5 on 1a and open valve 1-5 on 1b. Hydraulic oil flows out sequentially through oil passage 2 6-2, oil passage 5 6-5, oil passage 7 6-7, oil passage 8 6-8, and oil passage 9 6-9. This indicates that the other passage is also normal. If no hydraulic oil flows out, it means that the other passage is blocked. Seal the port of oil passage 9 6-9 with plug 8, start the oil pump to pressurize to 10MPa and maintain it for 1 hour. Observe the pressure change. If the pressure remains unchanged, it means that there is no defect of mutual penetration between this passage and other oil passages. If the pressure drops, it means that there is a defect of mutual penetration between the oil passages inside the valve plate.

[0033] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Therefore, all equivalent variations made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A component for detecting defects in the internal oil circuit of a hydraulic integrated valve plate, characterized in that: It includes an oil circuit connection block one (1), an oil circuit connection block two (2), an oil circuit connection block three (3), a sealing block (4), a connector (7), and a plug (8); the oil circuit connection block one (1) has a passage one (1-1) inside, and the two ports one (1-2) of the passage one (1-1) are located on the mating surface between the oil circuit connection block one (1) and the hydraulic integrated valve plate (6); the oil circuit connection block two (2) has two passage two (2-1) inside, and the two passage two (2-1) The four ports 2 (2-2) are all located on the mating surface of the oil circuit connecting block 2 (2) and the hydraulic integrated valve plate (6); the oil circuit connecting block 3 (3) has a passage 3 (3-1) inside, and the two ports (3-2) of the passage 3 (3-1) are all located on the mating surface of the oil circuit connecting block 3 (3) and the hydraulic integrated valve plate (6); the sealing block (4) and the hydraulic integrated valve plate (6) have two circular countersunk platforms (4-1); the port 1 (1-2), port 2 ( 2-2) Both ports (3-2) are provided with annular recesses (5), and sealing rings are installed on both the annular recesses (5) and the circular recesses (4-1); the oil circuit connecting block one (1), the oil circuit connecting block two (2), the oil circuit connecting block three (3) and the oil circuit sealing block (4) are respectively fixedly installed on the corresponding positions on the hydraulic integrated valve plate (6), and the ports one (1-2), ports two (2-2), ports (3-2) and the circular recesses (4-1) are respectively connected to the hydraulic integrated valve plate (6). 6) The corresponding external interfaces of the internal oil circuit are sealed and connected. The plug (8) is used to block a single external interface of the internal oil circuit of the hydraulic integrated valve plate (6) so that the internal oil circuit of the hydraulic integrated valve plate (6) forms at least one through oil circuit. The joint (7) is sealed and connected to one end of the oil circuit. Hydraulic oil is injected through the joint (7) to verify whether the oil circuit is through. On this basis, the other end of the oil circuit is blocked to verify whether there is a through defect between different oil circuits inside the hydraulic integrated valve plate (6).

2. The component according to claim 1, characterized in that: The oil circuit connection block (1) is a rectangular structure. The four corners of the rectangular structure are fixedly installed on the hydraulic integrated valve plate (6) by bolts (9). The passage (1-1) is formed by two vertical blind holes (1-3) and one horizontal blind hole (1-4) passing through each other. The opening end of the horizontal blind hole (1-4) is blocked, and a valve (1-5) is installed on the horizontal blind hole (1-4) and the valve (1-5) is located between the two vertical blind holes (1-3).

3. The component according to claim 1, characterized in that: The oil circuit connection block two (2) is a rectangular structure. The four corners of the rectangular structure are fixedly installed on the hydraulic integrated valve plate (6) by bolts (9). The passage two (2-1) is formed by two vertical blind holes two (2-3) and one horizontal blind hole two (2-4) passing through each other. The opening end of the horizontal blind hole two (2-4) is blocked, and the two horizontal blind holes two (2-4) are arranged alternately.

4. The component according to claim 1, characterized in that: The oil circuit connection block three (3) is a rectangular structure. The four corners of the rectangular structure are fixedly installed on the hydraulic integrated valve plate (6) by bolts (9). The passage three (3-1) is formed by two vertical blind holes three (3-3) and one horizontal blind hole three (3-4) passing through each other, and the opening end of the horizontal blind hole three (3-4) is blocked.

5. The component according to claim 1, characterized in that: The sealing block (4) is a rectangular structure, and the four corners of the rectangular structure are fixedly installed on the hydraulic integrated valve plate (6) by bolts (9).

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