A dry wear-proof hydraulic pump seat assembly

Abstract

The present invention discloses an anti-dry wear type hydraulic pump seat assembly, comprising a hydraulic pump gear, a hydraulic pump seat, an angular contact ball bearing, a pressing sleeve, an elastic retaining ring for a hole, a nut, a cover plate assembly, an oil absorber and a controller. The side wall of the hydraulic pump seat is provided with an oil injection channel and an oil suction opening which penetrate the shaft cavity. The oil absorber comprises a shell, a plug body, oil felt, a spring and an electromagnet. The shell is installed at the oil suction opening. The plug body is located in the shell cavity of the shell and the opposite sides are respectively connected to the oil felt and one end of the spring. The other end of the spring is connected to the bottom wall of the shell. The spring has a tendency to pull the oil felt into the shell cavity of the shell. Two electromagnets are respectively installed in the bottom wall and the plug body of the shell and magnetically repel each other when energized, thereby forcing the oil felt to extend out of the shell cavity of the shell. The oil injection channel can be used to directly inject lubricating oil into the shaft cavity, and the oil absorber can be used to quickly suck away excess lubricating oil in the shaft cavity.

Description

[Technical field]

[0001] The invention relates to the technical field of a hydraulic pump seat assembly, in particular to the technical field of an anti-dry wear type hydraulic pump seat assembly. [Background technology]

[0002] In the engine, the hydraulic pump is an important part of the hydraulic system and can provide sufficient pressure for the high-pressure pipeline. However, the gears of the existing hydraulic pumps are usually not lubricated with oil or are insufficiently lubricated, which poses a huge risk of gear and spline meshing wear failure. In addition, when too much oil is added, the oil is easy to leak out from the gap due to excessive oil pressure, causing component contamination. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose an anti-dry wear hydraulic pump seat assembly, which can utilize the oil injection channel to directly inject lubricating oil into the shaft cavity, thereby fully lubricating the center shaft, angular contact ball bearing and pressure sleeve of the pressure pump gear, effectively solving the wear failure caused by insufficient lubrication, improving the quality of the engine, and can use an oil suction device to quickly suck away excess lubricating oil in the shaft cavity without disassembling the hydraulic pump seat assembly, thereby avoiding the problem of lubricating oil leakage caused by excessive oil pressure.

[0004] To achieve the above-mentioned purpose, the present invention proposes an anti-dry wear hydraulic pump seat assembly, including a hydraulic pump gear, a hydraulic pump seat, an angular contact ball bearing, a press sleeve, a hole elastic ring, a nut, a cover plate assembly, an oil absorber and a controller. The central axis of the hydraulic pump gear extends into the shaft cavity from one side of the hydraulic pump seat, and a plurality of the angular contact ball bearings and the press sleeves are sequentially sleeved outside the central axis to form a shaft sleeve group. The nut is threadedly connected to the free end of the central axis, the hole elastic ring is sleeved outside the central axis and is located between the shaft sleeve group and the nut, and the cover plate assembly seals the shaft cavity on the other side of the hydraulic pump seat. The side wall of the hydraulic pump seat is provided with an oil injection channel and an oil suction opening which pass through the shaft cavity. The oil absorber includes a shell, a plug body, an oil felt, a spring and an electromagnet. The shell is installed at the oil suction opening. The plug body is located in the shell cavity of the shell and the opposite sides are respectively connected to the oil felt and one end of the spring. The other end of the spring is connected to the bottom wall of the shell. The spring has a tendency to pull the oil felt into the shell cavity of the shell. The two electromagnets are respectively installed in the bottom wall of the shell and the plug body and magnetically repel each other when power is turned on, thereby forcing the oil felt to extend out of the shell cavity of the shell. The controller is electrically connected to the oil absorber.

[0005] Preferably, the cover plate assembly includes a hydraulic pump inner plate, a hydraulic pump outer plate, a gasket and bolts, the hydraulic pump inner plate is located at the step on the other side of the hydraulic pump seat, the hydraulic pump outer plate is located at the end surface on the other side of the hydraulic pump seat, the gasket is arranged between the hydraulic pump inner plate and the hydraulic pump outer plate, and the bolts are threadedly connected to the hydraulic pump seat and the hydraulic pump outer plate.

[0006] Preferably, the shaft sleeve assembly includes two angular contact ball bearings and a press sleeve, the outlet of the oil injection channel is arranged opposite to one of the angular contact ball bearings, and the outlet of the oil suction opening is arranged opposite to the press sleeve.

[0007] Preferably, the plug body is in the shape of an inverted truncated cone, and a flange adapted to the plug body is provided on the inner wall of the shell cavity opening of the shell.

[0008] Preferably, an annular groove is provided on the flange, and a sealing ring is installed in the annular groove.

[0009] Preferably, the oil absorber also includes a suction assembly, which includes a hose, an oil storage box and a suction pump. A plurality of pipe holes are provided on the bottom wall of the shell. One end of the hose is connected to the suction pump and the other end passes through the pipe hole and is connected to the plug body. The plug body is provided with an oil channel connecting the hose and the oil felt. The oil outlet of the suction pump is connected to the oil inlet of the oil storage box through a pipe.

[0010] Preferably, the connection between the hose and the plug body is located on the side of the plug body where the spring is installed.

[0011] Preferably, a first annular groove and a second annular groove are respectively provided at two axial ends of the central axis of the hydraulic pump gear so as to respectively surround the shaft sleeve assembly and the nut to form a first oil storage chamber and a second oil storage chamber.

[0012] Beneficial effects of the present invention: The present invention provides an oil injection channel and an oil suction opening that penetrate the shaft cavity on the side wall of the hydraulic pump seat, and installs an oil suction device at the oil suction opening, so that lubricating oil can be directly injected into the shaft cavity by using the oil injection channel, thereby fully lubricating the central shaft, angular contact ball bearing and pressing sleeve of the pressure pump gear, effectively solving the wear failure caused by insufficient lubrication, improving the quality of the engine, and can use the oil suction device to quickly suck away the excess lubricating oil in the shaft cavity without disassembling the hydraulic pump seat assembly, thereby avoiding the problem of lubricating oil leakage caused by excessive oil pressure; by A first annular groove and a second annular groove are respectively arranged at the two axial ends to respectively surround the shaft sleeve group and the nut to form a first oil storage chamber and a second oil storage chamber, which can temporarily store excess lubricating oil, assist the work of the oil absorber, and then gradually release the lubricating oil; the oil absorber is composed of a shell, a plug body, an oil felt and an electromagnet, which can use the magnetic repulsive force to force the oil felt to extend into the shaft cavity to absorb oil when oil absorption is required, and can use the spring elastic force to drive the oil felt to retract into the shell when oil absorption is not required, with low power consumption and high oil absorption efficiency; the oil absorption efficiency can be further improved by adding a hose, an oil storage box and a suction pump.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of an anti-dry wear type hydraulic pump seat assembly of the present invention;

[0015] Figure 2 It is a cross-sectional view of an anti-dry wear type hydraulic pump seat assembly of the present invention when the oil storage box and the suction pump are removed;

[0016] Figure 3 The invention discloses a cross-sectional view of an oil suction device of an anti-dry wear type hydraulic pump seat assembly when an oil storage box and a suction pump are removed.

[0017] In the figure: 1-hydraulic pump gear, 11-first annular groove, 12-second annular groove, 2-hydraulic pump seat, 21-oil injection channel, 22-oil suction opening, 3-angular contact ball bearing, 4-pressing sleeve, 5-elastic retaining ring for hole, 6-nut, 7-hydraulic pump inner plate, 8-hydraulic pump outer plate, 9-oil absorber, 91-housing, 911-flange, 912-tube hole, 92-plug body, 921-oil channel, 93-oil felt, 94-spring, 95-electromagnet, 96-hose. [Specific implementation method]

[0018] See also Figure 1 , Figure 2 and Figure 3The present invention discloses an anti-dry wear hydraulic pump seat assembly, comprising a hydraulic pump gear 1, a hydraulic pump seat 2, an angular contact ball bearing 3, a press sleeve 4, a hole elastic retaining ring 5, a nut 6, a cover plate assembly, an oil absorber 9 and a controller. The central axis of the hydraulic pump gear 1 extends into the shaft cavity from one side of the hydraulic pump seat 2. A plurality of the angular contact ball bearings 3 and the press sleeve 4 are sequentially sleeved outside the central axis to form a shaft sleeve group. The nut 6 is threadedly connected at the free end of the central axis. The hole elastic retaining ring 5 is sleeved outside the central axis and is located between the shaft sleeve group and the nut 6. The cover plate assembly seals the shaft cavity on the other side of the hydraulic pump seat 2. The side wall of the hydraulic pump seat 2 is provided with an oil injection channel 2 that passes through the shaft cavity. 1 and an oil suction opening 22, the oil absorber 9 includes a shell 91, a plug body 92, an oil felt 93, a spring 94 and an electromagnet 95, the shell 91 is installed at the oil suction opening 22, the plug body 92 is located in the shell cavity of the shell 91 and the opposite sides are respectively connected to the oil felt 93 and one end of the spring 94, the other end of the spring 94 is connected to the bottom wall of the shell 91, the spring 94 has a tendency to pull the oil felt 93 into the shell cavity of the shell 91, the two electromagnets 95 are respectively installed in the bottom wall of the shell 91 and the plug body 92 and magnetically repel each other when powered on, thereby forcing the oil felt 93 to extend out of the shell cavity of the shell 91, and the controller is electrically connected to the oil absorber 9.

[0019] The cover plate assembly includes a hydraulic pump inner plate body 7, a hydraulic pump outer plate body 8, a gasket and a bolt. The hydraulic pump inner plate body 7 is located at the step on the other side of the hydraulic pump seat 2, and the hydraulic pump outer plate body 8 is located at the end surface on the other side of the hydraulic pump seat 2. The gasket is arranged between the hydraulic pump inner plate body 7 and the hydraulic pump outer plate body 8. The bolts are threadedly connected to the hydraulic pump seat 2 and the hydraulic pump outer plate body 8.

[0020] The shaft sleeve assembly includes two angular contact ball bearings 3 and a press sleeve 4 . The outlet of the oil injection channel 21 is arranged opposite to one of the angular contact ball bearings 3 , and the outlet of the oil suction opening 22 is arranged opposite to the press sleeve 4 .

[0021] The plug body 92 is in the shape of an inverted truncated cone, and a flange 911 adapted to the plug body 92 is provided on the inner wall of the shell cavity opening of the shell 91 .

[0022] The flange 911 is provided with an annular groove, and a sealing ring is installed in the annular groove.

[0023] The oil absorber 9 also includes a suction assembly, which includes a hose 96, an oil storage box and a suction pump. A plurality of pipe holes 912 are provided on the bottom wall of the shell 91. One end of the hose 96 is connected to the suction pump and the other end passes through the pipe hole 912 and is connected to the plug body 92. The plug body 92 is provided with an oil channel 921 connecting the hose 96 and the oil felt 93. The oil outlet of the suction pump is connected to the oil inlet of the oil storage box through a pipeline.

[0024] The connection between the hose 96 and the plug body 92 is located on the side of the plug body 92 where the spring 94 is installed.

[0025] A first annular groove 11 and a second annular groove 12 are respectively provided at two axial ends of the central axis of the hydraulic pump gear 1 so as to respectively surround the shaft sleeve assembly and the nut 6 to form a first oil storage chamber and a second oil storage chamber.

[0026] Working process of the present invention:

[0027] When oil injection is required, lubricating oil can be directly injected into the shaft cavity through the oil injection channel 21, so that the lubricating oil can fully contact the angular contact ball bearing 3 facing the oil injection channel 21, and then gradually lubricate the press sleeve 4, the other angular contact ball bearing 3 and the central axis of the hydraulic pump gear 1 along the gap. In addition, excess lubricating liquid can be temporarily stored in the first oil storage chamber and the second oil storage chamber located at the axial ends of the central axis of the hydraulic pump gear 1, and then slowly released.

[0028] When oil absorption is required, the two electromagnets 95 are energized and repel each other, thereby forcing the plug body 92 and the felt 93 to gradually move to the side away from the bottom wall of the housing 91 by means of magnetic repulsion, until the felt 93 extends out of the housing cavity of the housing 91 and contacts the press sleeve 4. At this time, the felt 93 can gradually absorb the lubricating oil in the shaft cavity by capillary effect. In addition, the suction pump can be started to suck the lubricating oil absorbed in the felt 93 into the oil storage box through the oil passage 921, the hose, the suction pump and the pipeline.

[0029] The present invention provides an oil injection channel and an oil suction opening that penetrate the shaft cavity on the side wall of the hydraulic pump seat, and installs an oil suction device at the oil suction opening, so that lubricating oil can be directly injected into the shaft cavity by using the oil injection channel, thereby fully lubricating the central shaft, angular contact ball bearing and pressing sleeve of the pressure pump gear, effectively solving the wear failure caused by insufficient lubrication, improving the quality of the engine, and can use the oil suction device to quickly suck away the excess lubricating oil in the shaft cavity without disassembling the hydraulic pump seat assembly, thereby avoiding the problem of lubricating oil leakage caused by excessive oil pressure; by A first annular groove and a second annular groove are respectively arranged to surround the shaft sleeve group and the nut to form a first oil storage chamber and a second oil storage chamber, which can temporarily store excess lubricating oil, assist the work of the oil absorber, and then gradually release the lubricating oil; the oil absorber is composed of a shell, a plug body, an oil felt and an electromagnet, and when oil absorption is required, the magnetic repulsion force can be used to force the oil felt to extend into the shaft cavity to absorb oil, and when oil absorption is not required, the spring force can be used to drive the oil felt to retract into the shell, with low power consumption and high oil absorption efficiency; the oil absorption efficiency can be further improved by adding a hose, an oil storage box and a suction pump.

[0030] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. An anti-dry wear hydraulic pump seat assembly, characterized in that: The invention comprises a hydraulic pump gear (1), a hydraulic pump seat (2), an angular contact ball bearing (3), a press sleeve (4), a hole elastic ring (5), a nut (6), a cover plate assembly, an oil absorber (9) and a controller, wherein the central axis of the hydraulic pump gear (1) extends into the shaft cavity from one side of the hydraulic pump seat (2), a plurality of the angular contact ball bearings (3) and the press sleeve (4) are sequentially sleeved outside the central axis to form a shaft sleeve group, the nut (6) is threadedly connected to the free end of the central axis, the hole elastic ring (5) is sleeved outside the central axis and is located between the shaft sleeve group and the nut ( 6), the cover plate assembly seals the shaft cavity on the other side of the hydraulic pump seat (2), the side wall of the hydraulic pump seat (2) is provided with an oil injection channel (21) and an oil suction opening (22) penetrating the shaft cavity, the oil absorber (9) comprises a shell (91), a plug body (92), an oil felt (93), a spring (94) and an electromagnet (95), the shell (91) is installed at the oil suction opening (22), the plug body (92) is located in the shell cavity of the shell (91) and the opposite sides are respectively connected to the oil felt (93) and one end of the spring (94), the The other end of the spring (94) is connected to the bottom wall of the shell (91), and the spring (94) has a tendency to pull the oil felt (93) into the shell cavity of the shell (91). The two electromagnets (95) are respectively installed in the bottom wall of the shell (91) and the plug body (92) and magnetically repel each other when energized, thereby forcing the oil felt (93) to extend out of the shell cavity of the shell (91). The controller is electrically connected to the oil suction device (9); the cover plate assembly includes a hydraulic pump inner plate body (7), a hydraulic pump outer plate body (8), a gasket and bolts, and the hydraulic pump inner plate body (7) is located at the step on the other side of the hydraulic pump seat (2), the hydraulic pump outer plate (8) is located at the end surface on the other side of the hydraulic pump seat (2), the gasket is arranged between the hydraulic pump inner plate (7) and the hydraulic pump outer plate (8), and the bolt threadedly connects the hydraulic pump seat (2) and the hydraulic pump outer plate (8); the shaft sleeve assembly includes two angular contact ball bearings (3) and a press sleeve (4), the outlet of the oil injection channel (21) is arranged opposite to one of the angular contact ball bearings (3), and the outlet of the oil suction opening (22) is arranged opposite to the press sleeve (4).

2. The anti-dry wear hydraulic pump seat assembly according to claim 1, characterized in that: The plug body (92) is in the shape of an inverted truncated cone, and a flange (911) adapted to the plug body (92) is provided on the inner wall of the shell cavity opening of the shell (91).

3. The anti-dry wear hydraulic pump seat assembly according to claim 2, characterized in that: An annular groove is provided on the flange (911), and a sealing ring is installed in the annular groove.

4. The anti-dry wear hydraulic pump seat assembly according to claim 1, characterized in that: The oil absorber (9) further comprises a suction assembly, which comprises a hose (96), an oil storage box and a suction pump. A plurality of pipe holes (912) are provided on the bottom wall of the shell (91). One end of the hose (96) is connected to the suction pump, while the other end passes through the pipe hole (912) and is connected to the plug body (92). The plug body (92) is provided with an oil passage (921) connecting the hose (96) and the oil felt (93). The oil outlet of the suction pump is connected to the oil inlet of the oil storage box via a pipeline.

5. The anti-dry wear hydraulic pump seat assembly according to claim 4, characterized in that: The connection point between the hose (96) and the plug body (92) is located on the side of the plug body (92) where the spring (94) is installed.

6. An anti-dry wear hydraulic pump seat assembly according to any one of claims 1 to 5, characterized in that: A first annular groove (11) and a second annular groove (12) are respectively provided at two axial ends of the central axis of the hydraulic pump gear (1), thereby respectively surrounding the shaft sleeve assembly and the nut (6) to form a first oil storage chamber and a second oil storage chamber.

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