A grease lubrication pump for an automotive chassis with a built-in controller

Abstract

The present invention relates to a grease lubrication pump for an automobile chassis with a built-in controller, which comprises a pump body of the grease lubrication pump. An inverted fuel tank is fixed to the upper end of the pump body. The pump body includes a cylindrical ring-shaped cavity shell. A fuel tank chassis is formed at the top of the cavity shell. A pump seat that is recessed downward is formed in the middle of the fuel tank chassis. A bushing is formed in the middle of the lower end face of the pump seat. A disc motor is inserted and fixed in the pump body cavity shell on the lower side of the fuel tank chassis. The rotating shaft of the disc motor is inserted into the bushing and connected to the input shaft of a gear pump. The gear pump is inserted and fixed in the pump seat. The grease lubrication pump designed in this way has a compact structure and a small volume. The controller is built in and installed on the lubrication pump body. Moreover, with the design of an upper fuel tank and a lower pump body, the lubricating oil in the upper fuel tank can be fully utilized.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating pumps, and more specifically to a grease lubricating pump for an automotive chassis with a built-in controller. Background Art

[0002] An oil-gas lubrication system is an auxiliary device specifically configured for lubricating bearings, gears, etc. on equipment. The performance of the oil-gas lubrication system directly affects the service life of the lubricated components on the equipment. The power of the existing lubrication system oil source is mainly obtained by driving with an electric motor, which is simply called an electric grease lubricating pump. However, the general structure of the existing electric grease lubricating pump is an upper pump body and a lower oil tank structure. During specific use, the lubricating oil at the bottom of the lower oil tank often cannot be transported for lubrication. At the same time, the overall volume of the existing electric grease lubricating pump is extremely large, occupying a large space. Some electric grease lubricating pumps require the use of a controller in the lubrication system. The controller is connected to the main circuit board of the electric grease lubricating pump through a cable, and the controller is separated from the electric grease lubricating pump and is externally fixed to the corresponding equipment. Therefore, in view of the above problems, it is necessary to design an electric grease lubricating pump with a compact structure, a small volume, and an integrated lubricating pump body and controller. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies of the existing technology and provide a grease lubricating pump for an automotive chassis with a built-in controller. The designed grease lubricating pump has a compact structure, a small volume, the controller is internally installed on the lubricating pump body, and an upper oil tank and a lower pump body design are adopted, which can make full use of the lubricating oil in the upper oil tank.

[0004] A grease lubricating pump for an automotive chassis with a built-in controller includes the pump body of the grease lubricating pump. An inverted oil tank is fixed at the upper end of the pump body. The pump body includes a cylindrical ring-shaped cavity shell. A fuel tank chassis is formed at the top of the cavity shell. A pump seat that is recessed downward is formed in the middle of the fuel tank chassis. A shaft sleeve is formed in the middle of the lower end surface of the pump seat. A disc motor is inserted and fixed in the pump body cavity shell below the fuel tank chassis. The rotating shaft of the disc motor is inserted into the shaft sleeve and connected to the input shaft of the gear pump. The gear pump is inserted and fixed in the pump seat.

[0005] On the lower end surfaces of the fuel tank chassis on the front and rear sides of the pump seat, a horizontal fuel filling channel and an oil outlet channel are respectively formed. The two ends of the fuel filling channel and the oil outlet channel respectively extend out of the pump seat to form a fuel filling port and an oil outlet port. A longitudinal pressure relief channel is formed in the middle of the oil outlet channel. The front and rear ends of the pressure relief channel are respectively formed on the inner walls of the pump seat and the rear side of the cavity shell. The inner channels of the oil outlet channel and the pressure relief channel are connected. An output hole that connects the inner channel of the pressure relief channel and the output port of the gear pump is formed on the bottom surface of the pump seat. A number of fuel filling holes that are connected to the inner channel of the fuel filling channel are formed on the bottom surface of the fuel tank chassis.

[0006] A unloading component is screwed inside the unloading channel of the pump body. An oil filling plug and an oil outlet plug are respectively screwed and fixed on the oil filling port and the oil outlet on one side of the pump body. An oil filling component and an oil outlet joint are respectively screwed and fixed on the oil filling port and the oil outlet on one side of the pump body; A pressure relief hole communicating with the inner channel of the oil outlet channel is formed on the bottom surface of the fuel tank chassis near the oil outlet joint. A safety valve is screwed and fixed on the pressure relief hole, and the safety valve is inserted into the fuel tank;

[0007] A rectangular controller mounting seat is formed on the front side wall of the lower part of the pump body cavity shell. A controller is fixed on the controller mounting seat, and the rear part of the controller is inserted into the cavity shell of the pump body; A base is fixed at the bottom of the pump body. The base includes a bottom cover fixed at the bottom of the pump body. A main circuit control board is inserted and fixed inside the bottom cover. The controller is electrically connected to the main circuit control board through a cable. The disc motor is electrically connected to the main circuit control board through a cable. A power cord is fixedly connected to the main circuit control board, and the power cord is inserted into the pump body.

[0008] Preferably, the unloading component includes an unloading joint screwed inside the unloading channel. A connecting column is formed at the end of the unloading joint. A support column is formed at the end of the connecting column. A spring is sleeved on the plug. One end of the spring presses against the end face of the connecting column, and the other end presses against a bowl-shaped sealing valve. An annular unloading valve seat is pressed against the sealing valve. The unloading valve seat is inserted into the end of the inner channel of the unloading channel. An oil outlet small hole is formed between the inner channel of the unloading channel and the inner channel of the oil outlet channel. The oil outlet small hole is located between the sealing valve and the connecting column. A unloading hole channel is formed on the end face of the connecting column. A unloading hole communicating with the unloading hole channel is formed on the outer wall of the connecting column. Two annular convex rings are formed on the outer wall of the connecting column between the unloading hole and the oil outlet small hole. A sealing ring is sleeved on the connecting column between the convex rings. The sealing ring presses against the inner wall of the inner channel of the unloading channel;

[0009] A pressure discharge hole communicating with the inner channel of the unloading channel is formed on the bottom surface of the fuel tank chassis at the rear side of the oil outlet channel. The pressure discharge hole is opposite to the unloading hole on the unloading component. A central column is formed on the sealing valve. One end of the central column is inserted into the unloading valve seat, and the other end is inserted into the spring.

[0010] Preferably, the gear pump includes a circular gear pump seat. A gear groove is formed on the upper end face of the gear pump seat. A driving gear and a driven gear meshing with each other are inserted into the gear groove. A driving shaft and a driven shaft are inserted and fixed on the driving gear and the driven gear. A gear pump cover is fixed on the upper end of the gear pump seat. The upper ends of the driving shaft and the driven shaft are inserted into the gear pump cover. The lower end of the driven shaft is inserted into the gear pump seat. The lower end of the driving shaft extends out of the gear pump seat and is inserted into the shaft sleeve and forms a rectangular plug;

[0011] The end of the rotating shaft of the disc motor is formed with a socket, and the plug at the lower end of the drive shaft is inserted into the socket of the rotating shaft of the disc motor; an oil seal is sleeved on the rotating shaft of the disc motor, and the oil seal is inserted at the lower end of the shaft sleeve.

[0012] Preferably, the fuel tank includes a cylindrical outer shell, a breather valve is inserted and fixed at the top of the outer shell, a flange is formed at the lower end of the outer shell, and the flange is fixed on the pump body through a bolt assembly.

[0013] Preferably, a plurality of ear seats are formed on the outer wall of the upper end of the pump body cavity shell, and the flange at the lower end of the outer shell is fixed on the ear seats;

[0014] A plurality of vertical internal thread connecting posts are formed on the inner wall of the cavity shell on the lower side of the pump seat, the disc motor is fixed on the internal thread connecting posts by screws, a plurality of reinforcing ribs are formed on the inner wall of the pump body cavity shell and are misaligned with the internal thread connecting posts, and the bottom cover is fixed on the reinforcing ribs by screws;

[0015] Vertical mounting seat plates are formed on both outer walls at the rear end of the pump body cavity shell; a wire passing hole is formed in the cavity shell of the pump body, a cable connector is inserted and fixed in the wire passing hole, and a power cord is inserted into the cable connector.

[0016] Preferably, the fuel filling assembly includes a cylindrical filter screen and a fuel filling joint, the filter screen is inserted into the fuel filling channel and fixed on the fuel filling joint, the fuel filling joint is screwed and fixed in the fuel filling channel, and the fuel filling joint adopts a self-sealing joint.

[0017] Preferably, the safety valve includes a lower connecting pipe screwed on the pump body, an upper connecting pipe and a tubular valve body are arranged above the lower connecting pipe, a socket is formed on the upper end face of the valve body, a valve hole penetrating the lower end face of the valve body is formed on the bottom surface of the socket, the lower end of the valve body is screwed on the upper end of the upper connecting pipe, and the upper end of the lower connecting pipe is screwed on the lower end of the upper connecting pipe; a cylindrical valve core is inserted into the valve hole of the valve body, a support column is formed at the upper end of the valve core, a backing plate is inserted and fixed on the support column, the lower end face of the backing plate is pressed against the bottom surface of the socket, a compression spring is sleeved on the support column above the backing plate, the lower end of the compression spring is pressed against the backing plate, a pressure regulating screw is pressed against the upper end of the compression spring, the pressure regulating screw is screwed in the socket of the valve body, and the upper end of the pressure regulating screw extends out of the valve body and is screwed with a locking nut;

[0018] An annular cut groove is formed on the outer wall of the valve core, a vertical drilling hole is formed on the bottom surface of the valve core, and a plurality of communication holes communicating with the drilling hole are formed on the bottom surface of the cut groove.

[0019] The beneficial effects of the present invention are as follows:

[0020] The grease lubrication pump of the present design has a compact structure and a small volume. The controller is internally installed on the pump body of the lubrication pump, and the design of an upper fuel tank and a lower pump body is adopted, which can make full use of the lubricating oil in the upper fuel tank. Description of the Drawings

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 is a front-view structural schematic diagram of the present invention;

[0023] Figure 3 is a rear-view structural schematic diagram of the present invention;

[0024] Figure 4 is a partial structural schematic diagram in the front view direction of the present invention;

[0025] Figure 5 is an exploded structural schematic diagram of the present invention;

[0026] Figure 6 is a three-dimensional structural schematic diagram of the present invention without a fuel tank;

[0027] Figure 7 is a three-dimensional structural schematic diagram of the inner pump body of the present invention;

[0028] Figure 8 is a cross-sectional schematic diagram in the side view direction of the inner pump body of the present invention;

[0029] Figure 9 is a cross-sectional schematic diagram of the internal unloading component of the present invention;

[0030] Figure 10 is a cross-sectional schematic diagram of the internal safety valve of the present invention;

[0031] Figure 11 is a three-dimensional structural schematic diagram of the inner gear pump of the present invention without a pump cover.

[0032] In the figure: 1. Pump body; 11. Oil tank chassis; 111. Refueling hole; 112. Discharge pressure hole; 113. Pressure relief hole; 12. Pump base; 121. Output hole; 13. Bush; 14. Oil outlet channel; 141. Oil outlet; 15. Relief channel; 16. Refueling channel; 161. Refueling port; 17. Controller mounting seat; 18. Internal thread stud; 19. Reinforcing rib; 110. Ear seat; 120. Mounting seat plate; 130. Wire passing hole; 2. Oil tank; 21. Outer shell; 22. Breather valve; 3. Base; 31. Bottom cover; 32. Main circuit control board; 4. Disc motor; 41. Oil seal; 5. Gear pump; 51. Gear pump seat; 52. Driving gear; 53. Driven gear; 54. Driven shaft; 55. Driving shaft; 56. Gear pump cover; 6. Controller; 7. Relief component; 71. Relief joint; 711. Connecting column; 712. Relief hole passage; 713. Relief hole; 714. Convex ring; 72. Sealing valve; 721. Central column; 73. Relief valve seat; 74. Spring; 75. Sealing ring; 8. Safety valve; 81. Valve body; 811. Jack; 812. Valve hole; 82. Upper connecting pipe; 83. Valve core; 831. Support column; 832. Drilled hole; 833. Groove; 834. Communication hole; 84. Pressure regulating screw; 85. Pad; 86. Compression spring; 87. Lower connecting pipe; 9. Oil outlet plug; 10. Oil outlet joint; 20. Refueling component; 30. Refueling plug; 40. Cable joint; 50. Power cord. Detailed implementation mode

[0033] Embodiment: See Figures 1 to 11 As shown, a grease lubrication pump for an automotive chassis with a built-in controller includes a pump body 1 of the grease lubrication pump. An inverted oil tank 2 is fixed to the upper end of the pump body 1. The pump body 1 includes a cylindrical ring-shaped cavity shell. An oil tank chassis 11 is formed at the top of the cavity shell. A downwardly recessed pump base 12 is formed in the middle of the oil tank chassis 11. A bush 13 is formed in the middle of the lower end face of the pump base 12. A disc motor 4 is inserted and fixed in the cavity shell of the pump body 1 below the oil tank chassis 11. The rotating shaft of the disc motor 4 is inserted into the bush 13 and connected to the input shaft of the gear pump 5. The gear pump 5 is inserted and fixed in the pump base 12.

[0034] On the lower end surfaces of the fuel tank chassis 11 on the front and rear sides of the pump base 12, a transverse fuel filling passage 16 and an oil outlet passage 14 are respectively formed. At both ends of the fuel filling passage 16 and the oil outlet passage 14, a fuel filling port 161 and an oil outlet port 141 extend out of the pump base 12. In the middle of the oil outlet passage 14, a longitudinal unloading passage 15 is formed. The front and rear ends of the unloading passage 15 are respectively formed on the inner wall of the pump base 12 and the rear side of the cavity housing. The inner channel of the oil outlet passage 14 and the inner channel of the unloading passage 15 are connected; on the bottom surface of the pump base 12, an output hole 121 connecting the inner channel of the unloading passage 15 and the output port of the gear pump 5 is formed; on the bottom surface of the fuel tank chassis 11, a number of fuel filling holes 111 connected to the inner channel of the fuel filling passage 16 are formed;

[0035] An unloading component 7 is screwed in the unloading passage 15 of the pump body 1. A fuel filling plug 30 and an oil outlet plug 9 are respectively screwed and fixed on the fuel filling port 161 and the oil outlet port 141 on one side of the pump body 1. A fuel filling component 20 and an oil outlet joint 10 are respectively screwed and fixed on the fuel filling port 161 and the oil outlet port 141 on one side of the pump body 1; on the bottom surface of the fuel tank chassis 11 near one side of the oil outlet joint 10, a pressure relief hole 113 connected to the inner channel of the oil outlet passage 14 is formed. A safety valve 8 is screwed and fixed on the pressure relief hole 113. The safety valve 8 is inserted into the fuel tank 2;

[0036] On the front side wall of the lower part of the cavity housing of the pump body 1, a rectangular controller mounting seat 17 is formed. A controller 6 is fixed on the controller mounting seat 17. The rear part of the controller 6 is inserted into the cavity housing of the pump body 1; the bottom of the pump body 1 is fixed with a base 3. The base 3 includes a bottom cover 31 fixed on the bottom of the pump body 1. A main circuit control board 32 is inserted and fixed in the bottom cover 31. The controller 6 is electrically connected to the main circuit control board 32 through a cable. The disc motor 4 is electrically connected to the main circuit control board 32 through a cable. A power cord 50 is fixedly connected to the main circuit control board 32. The power cord 50 is inserted into the pump body 1.

[0037] Preferably, the pressure relief component 7 includes a pressure relief joint 71 screwed in the pressure relief channel 15. A connecting column 711 is formed at the end of the pressure relief joint 71. A support column is formed at the end of the connecting column 711. A spring 74 is sleeved on the plug. One end of the spring 74 abuts against the end face of the connecting column 711, and the other end abuts against a bowl-shaped sealing valve 72. An annular pressure relief valve seat 73 is pressed against the sealing valve 72. The pressure relief valve seat 73 is inserted into the end of the inner channel of the pressure relief channel 15. An oil outlet small hole is formed between the inner channel of the pressure relief channel 15 and the inner channel of the oil outlet channel 14, and the oil outlet small hole is located between the sealing valve 72 and the connecting column 711. A pressure relief hole channel 712 is formed on the end face of the connecting column 711. A pressure relief hole 713 communicating with the pressure relief hole channel 712 is formed on the outer wall of the connecting column 711. Two annular convex rings 714 are formed on the outer wall of the connecting column 711 between the pressure relief hole 713 and the oil outlet small hole. A sealing ring 75 is sleeved on the connecting column 711 between the convex rings 714, and the sealing ring 75 abuts against the inner wall of the inner channel of the pressure relief channel 15;

[0038] On the bottom surface of the fuel tank chassis 11 at the rear side of the oil outlet channel 14, a pressure discharge hole 112 communicating with the inner channel of the pressure relief channel 15 is formed. The pressure discharge hole 112 is directly opposite to the pressure relief hole 713 on the pressure relief component 7. A central column 721 is formed on the sealing valve 72. One end of the central column 721 is inserted into the pressure relief valve seat 73, and the other end is inserted into the spring 74.

[0039] Preferably, the gear pump 5 includes a circular gear pump seat 51. A gear groove is formed on the upper end surface of the gear pump seat 51. A driving gear 52 and a driven gear 53 engaged with each other are inserted into the gear groove. A driving shaft 55 and a driven shaft 54 are inserted and fixed on the driving gear 52 and the driven gear 53. A gear pump cover 56 is fixed on the upper end of the gear pump seat 51. The upper ends of the driving shaft 55 and the driven shaft 54 are inserted into the gear pump cover 56. The lower end of the driven shaft 54 is inserted into the gear pump seat 51. The lower end of the driving shaft 55 extends out of the gear pump seat 51 and is inserted into the bushing 13 and forms a rectangular plug;

[0040] An insertion port is formed at the end of the rotating shaft of the disc motor 4. The plug at the lower end of the driving shaft 55 is inserted into the insertion port of the rotating shaft of the disc motor 4; An oil seal 41 is sleeved on the rotating shaft of the disc motor 4, and the oil seal 41 is inserted into the lower end of the bushing 13.

[0041] Preferably, the fuel tank 2 includes a cylindrical outer shell 21. A breathing valve 22 is inserted and fixed on the top of the outer shell 21. A flange is formed at the lower end of the outer shell 21, and the flange is fixed on the pump body 1 through a bolt assembly.

[0042] Preferably, a plurality of ear seats 110 are formed on the outer wall of the upper end of the cavity shell of the pump body 1, and the lower flange of the outer shell 21 is fixed on the ear seats 110;

[0043] On the inner wall of the cavity shell on the lower side of the pump base 12, several vertical internal-threaded connecting posts 18 are formed. The disc motor 4 is fixed on the internal-threaded connecting posts 18 by screws. On the inner wall of the cavity shell of the pump body 1, several reinforcing ribs 19 are formed which are misaligned with the internal-threaded connecting posts 18. The bottom cover 31 is fixed on the reinforcing ribs 19 by screws;

[0044] On the outer walls on both sides of the rear end of the cavity shell of the pump body 1, vertical mounting seat plates 120 are formed; On the cavity shell of the pump body 1, a wire passing hole 130 is formed. A cable connector 40 is inserted and fixed in the wire passing hole 130, and a power cord 50 is inserted in the cable connector 40.

[0045] Preferably, the fuel filling assembly 20 includes a cylindrical filter screen and a fuel filling connector. The filter screen is inserted in the fuel filling passage 16 and fixed on the fuel filling connector. The fuel filling connector is screwed and fixed in the fuel filling passage 16, and the fuel filling connector adopts a self-sealing connector.

[0046] Preferably, the safety valve 8 includes a lower connecting pipe 87 screwed on the pump body 1. Above the lower connecting pipe 87, there are an upper connecting pipe 82 and a tubular valve body 81. On the upper end surface of the valve body 81, a jack 811 is formed. On the bottom surface of the jack 811, a valve hole 812 penetrating the lower end surface of the valve body 81 is formed. The lower end of the valve body 81 is screwed on the upper end of the upper connecting pipe 82, and the upper end of the lower connecting pipe 87 is screwed on the lower end of the upper connecting pipe 82; A cylindrical valve core 83 is inserted in the valve hole 812 of the valve body 81. On the upper end of the valve core 83, a support column 831 is formed. A backing plate 85 is inserted and fixed on the support column 831. The lower end surface of the backing plate 85 is pressed against the bottom surface of the jack 811. A compression spring 86 is inserted on the support column 831 above the backing plate 85. The lower end of the compression spring 86 is pressed against the backing plate 85, and the upper end of the compression spring 86 is pressed against a pressure adjusting screw 84. The pressure adjusting screw 84 is screwed in the jack 811 of the valve body 81, and the upper end of the pressure adjusting screw 84 extends out of the valve body 81 and is screwed with a locking nut; An oil outlet groove is formed on the side wall of the pressure adjusting screw 84;

[0047] On the outer wall of the valve core 83, an annular cutting groove 833 is formed. On the bottom surface of the valve core 83, a vertical drilling 832 is formed. On the bottom surface of the cutting groove 833, several communication holes 834 connected to the drilling 832 are formed.

[0048] Working principle: The present invention is a grease lubricating pump for an automotive chassis with a built-in controller. The main technical points of the grease lubricating pump are divided into two points. One is to adopt a structure with a fuel tank 2 arranged on the upper part and a pump body 1 arranged on the lower part. Thus, the lubricating oil in the fuel tank 2 will not accumulate at the bottom of the fuel tank like a fuel tank arranged at the lower part and cannot be transported and used;

[0049] Another main technology is reflected in the structure of the pump body 1 and the connection structure of its body components, making the entire grease lubrication pump structure compact, small in size, convenient for installation, not occupying much space, and the controller 6 can be installed on the cavity shell of the pump body 1 and inserted into the cavity shell, integrating the controller 6 and the pump body 1, solving many inconveniences of the external controller 6;

[0050] When the grease lubrication pump works specifically, the disc motor 4 drives the gear pump 5 to work. The gear pump 5 can suck the lubricating oil in the fuel tank 2, then input it into the unloading channel 15 through the output hole 121, and then enter the oil outlet channel 14, and output through one side of the oil outlet joint 10;

[0051] An unloading component 7 is provided in the unloading channel 15. Based on the unloading hole 712 on the unloading joint 71 of the unloading component 7, pressure stabilization is achieved. In the initial oil output stage, the lubricating oil output from the output hole 121 first pushes the sealing valve 72 to move towards the unloading joint 71. During the movement, the lubricating oil between the unloading joint 71 and the sealing valve 72 can be output through the unloading hole 712, thereby balancing the pressure. When the sealing valve 72 covers the unloading hole 712, the lubricating oil output through the output hole 121 can continuously enter the oil outlet channel 14;

[0052] When the oil pipe is blocked, the oil pressure in the oil outlet channel 14 increases. Therefore, a safety valve 8 is designed. The oil pressure can overcome the acting force of the internal pressure spring 86 in the safety valve 8, causing the valve core 83 to move upward. Then, pressure relief is carried out through the drilling 832, communication hole 834 and cutting groove 833 of the valve core 83.

[0053] The described embodiments are used to illustrate the present invention by way of example, rather than to limit the present invention. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of the rights protection of the present invention should be as listed in the claims of the present invention.

Claims

1. An oil grease lubrication pump for an automotive chassis with a built-in controller, comprising a pump body (1) of the oil grease lubrication pump, characterized in that: An inverted fuel tank (2) is fixed to the upper end of the pump body (1). The pump body (1) includes a cylindrical ring-shaped cavity shell. A fuel tank chassis (11) is formed at the top of the cavity shell. A pump seat (12) that is recessed downward is formed in the middle of the fuel tank chassis (11). A shaft sleeve (13) is formed in the middle of the lower end surface of the pump seat (12). A disc motor (4) is inserted and fixed in the cavity shell of the pump body (1) below the fuel tank chassis (11). The rotating shaft of the disc motor (4) is inserted into the shaft sleeve (13) and connected to the input shaft of the gear pump (5). The gear pump (5) is inserted and fixed in the pump seat (12). On the lower end surfaces of the fuel tank chassis (11) on the front and rear sides of the pump seat (12), a transverse fuel filling channel (16) and an oil outlet channel (14) are respectively formed. The two ends of the fuel filling channel (16) and the oil outlet channel (14) respectively extend out of the pump seat (12) to form a fuel filling port (161) and an oil outlet (141). A longitudinal unloading channel (15) is formed in the middle of the oil outlet channel (14). The front and rear ends of the unloading channel (15) are respectively formed on the inner wall of the rear side of the pump seat (12) and the cavity shell. The inner channel of the oil outlet channel (14) is communicated with the inner channel of the unloading channel (15). An output hole (121) that communicates the inner channel of the unloading channel (15) and the output port of the gear pump (5) is formed on the bottom surface of the pump seat (12). A number of fuel filling holes (111) that are communicated with the inner channel of the fuel filling channel (16) are formed on the bottom surface of the fuel tank chassis (11). A unloading component (7) is screwed in the unloading channel (15) of the pump body (1). A fuel filling plug (30) and an oil outlet plug (9) are respectively screwed and fixed on the fuel filling port (161) and the oil outlet (141) on one side of the pump body (1). A fuel filling component (20) and an oil outlet joint (10) are respectively screwed and fixed on the fuel filling port (161) and the oil outlet (141) on one side of the pump body (1). A pressure relief hole (113) that is communicated with the inner channel of the oil outlet channel (14) is formed on the bottom surface of the fuel tank chassis (11) near one side of the oil outlet joint (10). A safety valve (8) is screwed and fixed on the pressure relief hole (113). The safety valve (8) is inserted into the fuel tank (2). A rectangular controller mounting seat (17) is formed on the front side wall of the lower part of the cavity shell of the pump body (1). A controller (6) is fixed on the controller mounting seat (17). The rear part of the controller (6) is inserted into the cavity shell of the pump body (1). A base (3) is fixed to the bottom of the pump body (1). The base (3) includes a bottom cover (31) fixed to the bottom of the pump body (1). A main circuit control board (32) is inserted and fixed in the bottom cover (31). The controller (6) is electrically connected to the main circuit control board (32) through a cable. The disc motor (4) is electrically connected to the main circuit control board (32) through a cable. A power cord (50) is fixedly connected to the main circuit control board (32). The power cord (50) is inserted into the pump body (1).

2. The grease lubrication pump for an automotive chassis with a built-in controller according to claim 1, characterized in that: The described pressure relief component (7) includes a pressure relief joint (71) screwed in the pressure relief channel (15). A connecting column (711) is formed at the end of the pressure relief joint (71). A support column is formed at the end of the connecting column (711). A spring (74) is sleeved on the plug. One end of the spring (74) is pressed against the end face of the connecting column (711), and a bowl-shaped sealing valve (72) is pressed against the other end. An annular pressure relief valve seat (73) is pressed against the sealing valve (72). The pressure relief valve seat (73) is inserted into the end of the inner channel of the pressure relief channel (15). An oil outlet small hole is formed between the inner channel of the pressure relief channel (15) and the inner channel of the oil outlet channel (14). The oil outlet small hole is located between the sealing valve (72) and the connecting column (711). A pressure relief hole channel (712) is formed on the end face of the connecting column (711). A pressure relief hole (713) communicating with the pressure relief hole channel (712) is formed on the outer wall of the connecting column (711). Two annular convex rings (714) are formed on the outer wall of the connecting column (711) between the pressure relief hole (713) and the oil outlet small hole. A sealing ring (75) is sleeved on the connecting column (711) between the convex rings (714). The sealing ring (75) is pressed against the inner wall of the inner channel of the pressure relief channel (15). A pressure discharge hole (112) communicating with the inner channel of the pressure relief channel (15) is formed on the bottom surface of the fuel tank chassis (11) behind the oil outlet channel (14). The pressure discharge hole (112) is directly opposite to the pressure relief hole (713) on the pressure relief component (7). A central column (721) is formed on the sealing valve (72). One end of the central column (721) is inserted into the pressure relief valve seat (73), and the other end is inserted into the spring (74).

3. The grease lubricating pump for an automotive chassis with a built-in controller according to claim 1, characterized in that: The described gear pump (5) includes a circular gear pump base (51). A gear groove is formed on the upper end surface of the gear pump base (51). A driving gear (52) and a driven gear (53) engaged with each other are inserted into the gear groove. A driving shaft (55) and a driven shaft (54) are inserted and fixed on the driving gear (52) and the driven gear (53). A gear pump cover (56) is fixed on the upper end of the gear pump base (51). The upper ends of the driving shaft (55) and the driven shaft (54) are inserted into the gear pump cover (56). The lower end of the driven shaft (54) is inserted into the gear pump base (51). The lower end of the driving shaft (55) extends out of the gear pump base (51) and is inserted into the bushing (13) and forms a rectangular plug. An insertion port is formed at the end of the rotating shaft of the disc motor (4). The plug at the lower end of the driving shaft (55) is inserted into the insertion port of the rotating shaft of the disc motor (4). An oil seal (41) is sleeved on the rotating shaft of the disc motor (4). The oil seal (41) is inserted into the lower end of the bushing (13).

4. The grease lubrication pump for an automotive chassis with a built-in controller according to claim 1, characterized in that: The described fuel tank (2) includes a cylindrical outer shell (21). A breather valve (22) is inserted and fixed on the top of the outer shell (21). A flange is formed at the lower end of the outer shell (21). The flange is fixed on the pump body (1) through a bolt assembly.

5. The grease lubrication pump for an automotive chassis with a built-in controller according to claim 4, characterized in that: A plurality of ear seats (110) are formed on the outer wall of the upper end of the cavity shell of the pump body (1). The lower flange of the outer shell (21) is fixed on the ear seats (110). On the inner wall of the cavity shell at the lower side of the pump base (12), several vertical internal-threaded connecting posts (18) are formed. The disc motor (4) is fixed on the internal-threaded connecting posts (18) by screws. On the inner wall of the cavity shell of the pump body (1), several reinforcing ribs (19) are formed, which are misaligned with the internal-threaded connecting posts (18). The bottom cover (31) is fixed on the reinforcing ribs (19) by screws. On the outer walls at both sides of the rear end of the cavity shell of the pump body (1), vertical mounting seat plates (120) are formed; on the cavity shell of the pump body (1), a wire passing hole (130) is formed. A cable connector (40) is inserted and fixed in the wire passing hole (130), and a power cord (50) is inserted into the cable connector (40).

6. The grease lubrication pump for an automotive chassis with a built-in controller according to claim 1, characterized in that: The described oil filling assembly (20) includes a cylindrical filter screen and an oil filling connector. The filter screen is inserted into the oil filling passage (16) and fixed on the oil filling connector. The oil filling connector is screwed and fixed in the oil filling passage (16), and the described oil filling connector adopts a self-sealing connector.

7. The grease lubrication pump for an automotive chassis with a built-in controller according to claim 1, wherein: The described safety valve (8) includes a lower connecting pipe (87) screwed on the pump body (1). Above the lower connecting pipe (87), there are an upper connecting pipe (82) and a tubular valve body (81). On the upper end face of the valve body (81), a jack (811) is formed. On the bottom surface of the jack (811), a valve hole (812) penetrating the lower end face of the valve body (81) is formed. The lower end of the valve body (81) is screwed on the upper end of the upper connecting pipe (82), and the upper end of the lower connecting pipe (87) is screwed on the lower end of the upper connecting pipe (82); A cylindrical valve core (83) is inserted into the valve hole (812) of the valve body (81). On the upper end of the valve core (83), a support column (831) is formed. A backing plate (85) is inserted and fixed on the support column (831). The lower end face of the backing plate (85) is pressed against the bottom surface of the jack (811). A compression spring (86) is inserted on the support column (831) above the backing plate (85). The lower end of the compression spring (86) is pressed against the backing plate (85), and a pressure adjusting screw (84) is pressed against the upper end of the compression spring (86). The pressure adjusting screw (84) is screwed in the jack (811) of the valve body (81), and the upper end of the pressure adjusting screw (84) extends out of the valve body (81) and is screwed with a locking nut. On the outer wall of the valve core (83), an annular cutting groove (833) is formed. On the bottom surface of the valve core (83), a vertical drilling (832) is formed. On the bottom surface of the cutting groove (833), several communication holes (834) communicating with the drilling (832) are formed.

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