An integrated assembly of a micro-hydraulic station

Abstract

The utility model belongs to the technical field of hydraulic equipment relates to a kind of integrated assembly of micro hydraulic station, including valve block and oil pump, the front side of the valve block is provided with sealing assembly, gear cavity is provided in the oil pump, a pair of meshing gears is provided in the gear cavity, the rear side of the gear cavity is provided with the floating side plate of axial closed gear cavity, the front side of the valve block is sealed with the rear side of oil pump, the front side of the floating side plate and the end face of gear are in contact, rear side and sealing assembly are in contact to form floating sealing structure.The utility model provides the integrated assembly of micro hydraulic station, increases the integration of valve block and oil pump, further reduces its occupied volume, to meet the space occupation demand of micro hydraulic station;Meanwhile, the sealing performance of equipment is also improved, and its service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic equipment and relates to an integrated component of a micro hydraulic station. Background Technology

[0002] Miniature hydraulic power units are hydraulic devices with extremely high space requirements, and existing miniature hydraulic power units mostly adopt an integrated design. Chinese utility model patent CN205001269U (2016-01-27) discloses a miniature hydraulic power unit, including a base, a gear pump valve body assembly, an oil bladder, and a motor. The gear cavity inside the gear pump valve body assembly has a forward oil inlet and a reverse oil inlet communicating with the oil bladder. One-way valves are installed at both the forward and reverse oil inlets. The motor drives the gears inside the gear cavity. The key feature is that the gear pump valve body assembly also has a forward pressure output channel and a reverse pressure output channel communicating with the gear cavity. The two pressure output channels form a bidirectional channel for output and return. The gear pump valve body assembly also includes a piston chamber, which is connected to the two pressure output channels (positive and negative). These channels divide the piston chamber into a middle section and left and right ends. One-way valves are installed at the connections between the positive and negative pressure output channels and the left and right ends. A piston is located inside the middle section of the piston chamber, with push rods at both ends. The piston's left and right movement causes the push rods to open the one-way valve on one side. The outlets at the left and right ends of the piston chamber are connected to the positive and negative channels of the base, respectively. Connecting joints are located at the other ends of the positive and negative channels of the base. While this micro hydraulic station increases integration, there is still room for further optimization. Additionally, during operation, the end faces of the gears are prone to wear, leading to oil leakage. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing an integrated component for a micro hydraulic power station. It increases the integration of the valve block and oil pump, further reducing its volume to meet the space requirements of a micro hydraulic power station. At the same time, it also improves the sealing performance of the equipment and extends its service life.

[0004] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0005] An integrated component of a micro hydraulic station includes a valve block and an oil pump. A sealing component is provided on the front side of the valve block. A gear cavity is provided inside the oil pump, and a pair of meshing gears are provided inside the gear cavity. A floating side plate that axially closes the gear cavity is provided on the rear side of the gear cavity. The front side of the valve block is in contact with the rear side of the oil pump for sealing. The front side of the floating side plate abuts against the end face of the gear and the rear side abuts against the sealing component to form a floating sealing structure.

[0006] In the aforementioned integrated component of a micro hydraulic station, the front side of the valve block is provided with an installation groove of the same shape as the sealing component. After the sealing component is assembled, the front side of the sealing component is flush with the front side of the valve block. The "after the sealing component is assembled" refers to the state after the micro hydraulic station is fully assembled.

[0007] In the aforementioned integrated component of a micro hydraulic station, the axial cross-section of the floating side plate has the same shape as the axial cross-section of the gear cavity. After the floating side plate is installed, the rear side of the floating side plate is flush with the rear side of the oil pump. The state after the floating side plate is assembled refers to the state after the micro hydraulic station is assembled. The floating side plate is fitted onto the gear shaft on the rear side of the gear to complete the assembly.

[0008] In the integrated component of the aforementioned micro hydraulic station, the sealing component includes a sealing gasket and a sealing skeleton, wherein the sealing skeleton is fitted within the sealing gasket.

[0009] In the aforementioned integrated component of a micro hydraulic station, the sealing skeleton and the floating side plate have a matching shape and are connected in abutment. The sealing skeleton drives the floating side plate to move toward the oil pump through the elastic deformation of the sealing gasket. Both the sealing fastener and the floating side plate adopt a figure-eight structure.

[0010] In the aforementioned integrated component of a micro hydraulic station, the valve block is provided with a first shaft hole, the oil pump is provided with a second shaft hole, and the gear shaft of the gear is respectively assembled in the first shaft hole and the second shaft hole.

[0011] In the integrated component of the aforementioned micro hydraulic station, the valve block and the oil pump are fixedly connected by several axial fasteners; after the fixed connection, the sides of the valve block and the pump block are attached to form a sealing structure; the fasteners are preferably bolts and are assembled in corresponding countersunk holes.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] This invention provides an integrated component for a miniature hydraulic power unit. Through the cooperation of a sealing component, particularly a sealing skeleton within the sealing component, and a floating side plate, a sealing structure for the oil pump is formed. When the gear end face wears, the deformation of the sealing component generates a force that pushes the floating side plate towards the oil pump, forming a floating sealing structure. This prevents the sealing structure of the valve block and oil pump from failing after gear wear. Furthermore, integrating the oil seal component onto the side of the valve block and forming a sealing structure through the contact between the valve block and the oil pump side further increases the integration of the gear pump valve body component, significantly reducing the component size to meet the compact requirements of a miniature hydraulic power unit. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 This is an exploded view of this utility model;

[0016] Figure 3 This is a cross-sectional view of the present invention;

[0017] Figure 4 This is a perspective view of the valve block of this utility model;

[0018] Figure 5 This is a perspective view of the pump block of this utility model;

[0019] Figure 6 This is a perspective view of the oil seal of this utility model;

[0020] Reference numerals: 1. Valve block; 2. Oil pump; 3. Sealing assembly; 4. Gear cavity; 5. Gear; 6. Floating side plate; 7. Mounting groove; 8. Sealing gasket; 9. Sealing skeleton; 10. First shaft hole; 11. Second shaft hole. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-6 :

[0022] An integrated component of a micro hydraulic station includes a valve block 1 and an oil pump 2. A sealing component 3 is provided on the front side of the valve block 1. A gear cavity 4 is provided inside the oil pump 2. A pair of meshing gears 5 are provided inside the gear cavity 4. A floating side plate 6 is provided on the rear side of the gear cavity 4 to axially close the gear cavity 4. The front side of the valve block 1 is in contact with the rear side of the oil pump 2 for sealing. The front side of the floating side plate 6 abuts against the end face of the gears 5 and the rear side abuts against the sealing component 3 to form a floating sealing structure.

[0023] In this embodiment, a gear 5 pump valve body assembly is formed by combining a highly integrated valve block 1 and an oil pump 2. The valve block 1 and oil pump 2 are assembled using a side-fitting method. After assembly, the sealing component 3 cooperates with the floating side plate 6 to seal the cavity of the oil pump 2. During use, the elastic deformation of the sealing component 3 will press the floating side plate 6 towards the oil pump 2 to automatically compensate for the wear of the gear 5 end face and prevent seal failure. In this embodiment, the conveying channel configuration within the valve block 1 and oil pump 2 is the same as in the prior art, and the process and principle of the gear 5 pump conveying oil are also the same as in the prior art, and will not be repeated here. This embodiment also modularly integrates the valve block 1 and oil pump 2. After pre-assembly, the valve block 1 and oil pump 2 are fixed together with fasteners in one go, reducing assembly complexity and facilitating maintenance.

[0024] The valve block 1 has a mounting groove 7 with the same shape as the sealing component 3 on its front side. After the sealing component 3 is assembled, the front side of the sealing component 3 is flush with the front side of the valve block 1. The "after the sealing component 3 is assembled" refers to the state after the micro hydraulic station is assembled.

[0025] The axial section of the floating side plate 6 has the same shape as the axial section of the gear cavity 4. After the floating side plate 6 is installed, the rear side of the floating side plate 6 is flush with the rear side of the oil pump 2. The floating side plate 6 after assembly refers to the state after the micro hydraulic station is assembled. The floating side plate 6 is fitted onto the gear shaft on the rear side of the gear 5 to complete the assembly.

[0026] By setting the end faces to be flush (the mounting groove 7 of valve block 1 is flush with the side of sealing component 3, and the floating side plate 6 is flush with the side of oil pump 2), it is ensured that there is no gap between the mating surfaces of valve block 1 and oil pump 2, thus eliminating the risk of seal failure caused by assembly errors.

[0027] The sealing assembly 3 includes a sealing gasket 8 and a sealing skeleton 9. The sealing skeleton 9 is fitted inside the sealing gasket 8. The sealing gasket 8 provides sufficient elastic deformation and sealing effect, while the sealing skeleton 9 provides support and can better act on the floating side plate 6 to push it to compensate for the wear of the gear 5.

[0028] In the integrated component of the aforementioned micro hydraulic station, the sealing frame 9 and the floating side plate 6 have a matching shape and are connected in contact. The sealing frame 9 drives the floating side plate 6 to move toward the oil pump 2 through the elastic deformation of the sealing gasket 8. Both the sealing fastener and the floating side plate 6 adopt a figure-eight structure.

[0029] The valve block 1 is provided with a first shaft hole 10, the oil pump 2 is provided with a second shaft hole 11, and the gear 5 shaft of the gear 5 is respectively assembled in the first shaft hole 10 and the second shaft hole 11; the gear 5 mounting structure can increase the rigidity of the shaft system, form a double support structure, suppress the vibration of the gear 5 during operation, and extend its service life.

[0030] In the integrated component of the aforementioned micro hydraulic station, the valve block 1 and the oil pump 2 are fixedly connected by several axial fasteners; after the fixed connection, the valve block 1 and the side of the pump block are attached to form a sealing structure; the fasteners are preferably bolts and are assembled in the corresponding countersunk holes.

[0031] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. An integrated component of a micro hydraulic power unit, comprising a valve block (1) and an oil pump (2), characterized in that, The valve block (1) is provided with a sealing assembly (3) on its front side. The oil pump (2) is provided with a gear cavity (4). A pair of meshing gears (5) are provided in the gear cavity (4). The rear side of the gear cavity (4) is provided with a floating side plate (6) that axially closes the gear cavity (4). The front side of the valve block (1) is in contact with the rear side of the oil pump (2) for sealing. The front side of the floating side plate (6) abuts against the end face of the gear (5) and the rear side abuts against the sealing assembly (3) to form a floating sealing structure.

2. The integrated component of a micro hydraulic station according to claim 1, characterized in that, The front side of the valve block (1) is provided with an installation groove (7) that is the same shape as the sealing assembly (3). After the sealing assembly (3) is assembled, the front side of the sealing assembly (3) is flush with the front side of the valve block (1).

3. The integrated component of a micro hydraulic station according to claim 1, characterized in that, The axial section of the floating side plate (6) has the same shape as the axial section of the gear cavity (4). After the floating side plate (6) is installed, the rear side of the floating side plate (6) is flush with the rear side of the oil pump (2).

4. The integrated component of a micro hydraulic station according to claim 1, characterized in that, The sealing assembly (3) includes a sealing gasket (8) and a sealing skeleton (9), the sealing skeleton (9) being fitted inside the sealing gasket (8).

5. The integrated component of a micro hydraulic station according to claim 4, characterized in that, The sealing frame (9) and the floating side plate (6) have a matching shape and are connected in contact. The sealing frame (9) drives the floating side plate (6) to move toward the oil pump (2) through the elastic deformation of the sealing gasket (8).

6. The integrated component of a micro hydraulic station according to claim 1, characterized in that, The valve block (1) is provided with a first shaft hole (10), the oil pump (2) is provided with a second shaft hole (11), and the gear shaft of the gear (5) is respectively assembled in the first shaft hole (10) and the second shaft hole (11).

7. The integrated component of a micro hydraulic station according to claim 1, characterized in that, The valve block (1) and the oil pump (2) are fixedly connected by several axial fasteners.

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