CN113374667A - Compact split structure flashlight pump - Google Patents

Abstract

A compact split structure manual electric pump belongs to the technical field of auto parts. The invention aims to better complete lifting or descending compact split structure manual-electric pump by combining manual and electric modes and changing an oil way. The oil storage tank is inserted in the pump body through the oil storage tank oil inlet mounting hole and the oil storage tank oil return mounting hole and is communicated with a pipeline in the pump body through the oil storage tank oil inlet mounting hole and the oil storage tank oil return mounting hole; a transparent oil pipe communicated with the inside of the oil storage tank is arranged on the oil storage tank, and an oil scale is arranged on the side wall of the oil storage tank corresponding to the transparent oil pipe; the motor is arranged on the pump body through the motor mounting hole; the interior of the pump body is divided into a manual part and an electric part. The oil storage tank and the pump body are installed in a shape matching mode, so that the whole installation space is saved, and manual control or electric control can be switched conveniently through improvement of manual and electric control oil ways in the pump body.

Description

Compact split structure flashlight pump

Technical Field

The invention belongs to the technical field of automobile accessories.

Background

The cab lifting pump is a lifting device which is indispensable to the lifting and descending ratio of a cab of a large automobile, and the performance of the lifting pump can ensure the performances of safety, effect and the like in the lifting process. The existing lifting pumps are various, most of the existing lifting pumps are simple lifting oil cylinders, the service life is short, accidents often occur, and accordingly some oil cylinder type lifting devices, namely manual lifting devices and electric lifting devices, can be used for solving a lot of problems compared with the conventional pumps, but the existing lifting pumps can also have a lot of problems in the using process.

Disclosure of Invention

The invention aims to better complete lifting or descending compact split structure manual-electric pump by combining manual and electric modes and changing an oil way.

The oil storage tank is inserted in the pump body through the oil storage tank oil inlet mounting hole and the oil storage tank oil return mounting hole and is communicated with a pipeline in the pump body through the oil storage tank oil inlet mounting hole and the oil storage tank oil return mounting hole; a transparent oil pipe communicated with the inside of the oil storage tank is arranged on the oil storage tank, and an oil scale is arranged on the side wall of the oil storage tank corresponding to the transparent oil pipe; the motor is arranged on the pump body through the motor mounting hole; the interior of the pump body is divided into a manual part and an electric part;

manual part structure: the bottom of an oil inlet mounting hole of an oil storage tank is provided with a pump body main oil inlet hole, the pump body main oil inlet hole is communicated with an annular space on the outer side of a large oil sealing screw plug through a manual pressurizing oil inlet passage, the annular space on the outer side of the large oil sealing screw plug is communicated with an inner space of the large oil sealing screw plug through the oil inlet hole of the large oil sealing screw plug, the inner space of the large oil sealing screw plug is communicated with an oil suction inlet passage of an oil filling valve, the oil suction inlet passage of the oil filling valve is communicated with an oil suction one-way sealing passage of the oil filling valve, the inner diameter of the oil suction inlet passage of the oil filling valve is smaller than the inner diameter of the oil suction one-way sealing passage of the oil filling valve, an oil suction one-way sealing steel ball of the oil filling valve is arranged in the oil suction one-way sealing passage of the oil filling valve, the diameter of the oil suction one-way sealing passage of the oil filling valve is larger than the inner diameter of the oil suction inlet passage of the oil filling valve but smaller than the oil suction one-way sealing passage of the oil filling valve, the oil suction one-way sealing passage of the oil filling valve is communicated with a manual pressurizing variable space, and a large piston rod is inserted in the manual pressurizing variable space, the upper end of the large piston rod is fixedly provided with a large piston rod reset spring limiting check ring, a piston cylinder structure consisting of the large piston rod and a manual pressurizing variable space is sleeved with the large piston rod reset spring, the upper end of the large piston rod reset spring abuts against the large piston rod reset spring limiting check ring, the lower end of the large piston rod reset spring abuts against the outside of the manual pressurizing variable space in the pump body, the top end of the large piston rod is contacted with a roller, the roller is arranged at the front end of a cam through a shaft, the other end of the cam is fixedly arranged on a handle, and the handle extends out of the pump body; the manual variable pressing space is communicated with the oil outlet one-way sealing passage of the oil filling valve through the oil outlet passage of the oil filling valve, the inner diameter of the oil outlet one-way sealing passage of the oil filling valve is larger than that of the oil outlet passage of the oil filling valve, the bottom end of the oil outlet one-way sealing passage of the oil filling valve is plugged through a hexagon socket screw plug of the oil filling valve, an oil outlet one-way sealing spring of the oil filling valve is arranged in the oil outlet one-way sealing passage of the oil filling valve, the lower end of the oil outlet one-way sealing spring of the oil filling valve is fixed on the hexagon socket screw plug of the oil filling valve, the upper end of the oil outlet one-way sealing spring of the oil filling valve props against an oil outlet one-way sealing steel ball of the oil filling valve, the oil outlet one-way sealing steel ball of the oil filling valve is arranged between the oil outlet one-way sealing passage of the oil filling valve and the oil outlet passage of the oil filling valve, the diameter of the oil outlet one-way sealing steel ball of the oil filling valve is larger than that of the oil outlet passage of the oil filling valve but smaller than that of the oil outlet one-way sealing passage of the oil filling valve, the oil inlet one-way sealing passage of the oil valve and the oil valve, and the oil valve enters the oil valve, The oil outlet passage of the oil filling valve and the oil outlet one-way sealing passage of the oil filling valve are arranged in the oil filling valve, the oil filling valve is arranged in the pump body, the outer wall of the oil filling valve is provided with an annular space of the oil filling valve, the oil outlet one-way sealing passage of the oil filling valve enters the annular space passage through the oil outlet passage of the oil filling valve and is communicated with the annular space of the oil filling valve, the pump body corresponding to the annular space of the oil filling valve is provided with a manual pressing oil outlet passage, and the manual pressing oil outlet passage is sequentially communicated with a first manual pressing oil outlet common passage, a second manual pressing oil outlet common passage and a third manual pressing oil outlet common passage; a straight valve core is inserted in the pump body, a handle is arranged at the part of the straight valve core extending out of the pump body, a 90-degree angle limiting clamping groove is arranged at the end part of the straight valve core extending into the pump body, one end of a straight valve core limiting bolt is inserted in the limiting clamping groove, the other end of the straight valve core limiting bolt is fixedly connected with the pump body, a straight valve core internal passage is longitudinally arranged in the straight valve core, a first straight valve core oil inlet passage, a first straight valve core oil outlet passage, a second straight valve core oil inlet passage and a first straight valve core oil inlet passage and a second straight valve core oil inlet passage are arranged on the straight valve core, the positions of the first straight valve core oil inlet passage and the second straight valve core oil inlet passage form 90 degrees and correspond to the 90 degrees of the limiting clamping groove, a first pipe joint and a second pipe joint are arranged outside the pump body, a first pipe joint connecting passage and a second pipe joint connecting passage are respectively arranged in the pump body corresponding to the first pipe joint and the second pipe joint, a third manual pressing oil outlet common passage, The outer edges of straight valve cores of a first pipe joint connecting passage and a second pipe joint connecting passage are provided with a circle of straight valve core oil return passage, the straight valve core oil return passage is sequentially communicated with a pump body straight valve core oil return shared passage and an oil storage tank oil return passage, a first valve core plug and a third valve core plug which have sealing functions are respectively arranged on the straight valve cores corresponding to a third manual pressing oil outlet shared passage and a second pipe joint connecting passage, two ends of the first valve core plug are respectively communicated with the third manual pressing oil outlet shared passage and the first straight valve core oil inlet passage, a first valve core plug oil outlet passage is arranged in the third valve core plug, two ends of the first valve core plug are respectively communicated with the second pipe joint connecting passage and the first straight valve core oil outlet passage, the first pipe joint connecting passage is communicated with the straight valve core oil inlet passage, and the oil storage tank oil return passage is communicated with the oil storage tank through a pipeline; the upper end of the oil return shared passage of the straight valve core of the pump body is communicated with the internal space of the pump body through an oil return passage of the pump body, and a cam is arranged in the internal space of the pump body; a second valve core plug is arranged on the straight valve core corresponding to the second straight valve core oil inlet passage, and a second valve core plug oil inlet passage with two ends respectively communicated with the third manual pressing oil outlet shared passage and the second straight valve core oil inlet passage is arranged in the second valve core plug; a straight valve core corresponding to the first pipe joint connecting passage is provided with a second straight valve core oil outlet passage, a fourth valve core plug is arranged on a straight valve core at the outer end of the second straight valve core oil outlet passage, and a second valve core plug oil outlet passage with two ends respectively communicated with the first pipe joint connecting passage and the second straight valve core oil outlet passage is arranged in the fourth valve core plug;

the electric part structure: the manual pressurizing oil inlet passage is communicated with the electric pressurizing oil inlet passage, the electric pressurizing oil inlet passage is communicated with an annular space outside the small oil sealing screw plug, the annular space outside the small oil sealing screw plug is communicated with an inner space of the small oil sealing screw plug through an oil inlet hole of the small oil sealing screw plug, the inner space of the small oil sealing screw plug is communicated with a small valve seat space through an inner passage of the small valve seat, the small valve seat space is communicated with a first electric pressurizing oil outlet passage through an oil outlet passage of the small valve body, the first electric pressurizing oil outlet passage is communicated with an electric pressurizing oil outlet one-way sealing passage, an electric pressurizing oil outlet one-way sealing spring is arranged in the electric pressurizing oil outlet one-way sealing passage, the bottom end of the electric pressurizing oil outlet one-way sealing spring is propped against the bottom end of the electric pressurizing oil outlet one-way sealing passage, the upper end of the electric pressurizing oil outlet one-way sealing steel ball is propped against the electric pressurizing oil outlet one-way sealing steel ball, and the electric pressurizing oil outlet one-way sealing steel ball corresponds to an oil outlet opening of the first electric pressurizing oil outlet passage, the diameter of the electric oil-pressing one-way sealing steel ball is larger than that of the first electric oil-pressing passage, and the electric oil-pressing one-way sealing passage is communicated with the first manual oil-pressing shared passage through the second electric oil-pressing passage.

The oil storage tank and the pump body are installed in a shape matching mode, so that the whole installation space is saved, and manual control or electric control can be switched conveniently through improvement of manual and electric control oil ways in the pump body. The invention has reasonable design, convenient adjustment, simple and practical operation, and safer and more reliable oil inlet and outlet oil paths, and provides convenience, namely safety for lifting or lowering the cab. The invention can not generate the phenomena of sealing failure, oil leakage and the like, and can basically reach more than 10000 times or even more in the using process through practice, thereby saving a large amount of cost.

Drawings

FIG. 1 is a schematic view of the external structure of the connection between the oil tank and the pump body according to the present invention;

FIG. 2 is a top plan view of the contact surface of the pump body and the oil reservoir of the present invention;

FIG. 3 is a left side view of FIG. 2 of the present invention;

FIG. 4 is a cross-sectional view C-C of FIG. 2 of the present invention;

FIG. 5 is a cross-sectional view D-D of FIG. 2 of the present invention;

FIG. 6 is a cross-sectional view F-F of FIG. 3 of the present invention;

FIG. 7 is an enlarged view of portion Q of FIG. 6 in accordance with the present invention;

FIG. 8 is a cross-sectional view E-E of FIG. 2 of the present invention;

FIG. 9 is an enlarged view of the portion S of FIG. 8 of the present invention;

FIG. 10 is a structural sectional view of the straight spool subassembly of the present invention in an elevated state with the handle direction aligned with the sectioning direction;

FIG. 11 is an enlarged view of the Y portion of FIG. 10 of the present invention;

FIG. 12 is an enlarged view of the X portion of FIG. 10 in accordance with the present invention;

fig. 13 is a structural sectional view of a straight valve core subassembly handle of the invention in a descending state when the direction is vertical to the cutting direction after the handle is rotated clockwise by 90 degrees and the oil path of the straight valve core is reversed.

Detailed Description

An oil storage tank 4 is inserted in a pump body 1 through an oil storage tank oil inlet mounting hole 2 and an oil storage tank oil return mounting hole 7 and is communicated with a pipeline in the pump body 1 through the oil storage tank oil inlet mounting hole 2 and the oil storage tank oil return mounting hole 7; a transparent oil pipe 6 communicated with the inside of the oil storage tank 4 is arranged on the oil storage tank 4, and an oil scale 5 is arranged on the side wall of the oil storage tank 4 corresponding to the transparent oil pipe 6; the motor is arranged on the pump body 1 through the motor mounting hole 8; the interior of the pump body 1 is divided into a manual part and an electric part;

manual part structure: the bottom of an oil inlet mounting hole 2 of an oil storage tank is provided with a pump body main oil inlet hole 9, the pump body main oil inlet hole 9 is communicated with an outer annular space 15 of a large oil sealing screw plug through a manual pressurizing oil inlet passage 14, the outer annular space 15 of the large oil sealing screw plug is communicated with an inner space 33 of the large oil sealing screw plug through an oil inlet hole 13 of the large oil sealing screw plug, the inner space 33 of the large oil sealing screw plug is communicated with an oil suction inlet passage 43 of an oil filling valve, the oil suction inlet passage 43 of the oil filling valve is communicated with an oil suction one-way sealing passage 41 of the oil filling valve, the inner diameter of the oil suction inlet passage 43 of the oil filling valve is smaller than the inner diameter of the oil suction one-way sealing passage 41 of the oil filling valve, the oil suction one-way sealing steel ball 42 of the oil filling valve is arranged in the oil suction one-way sealing passage 41 of the oil filling valve, the diameter of the oil suction one-way sealing steel ball 42 of the oil filling valve is larger than the oil suction inlet passage 43 of the oil filling valve but smaller than the inner diameter of the oil suction one-way sealing passage 41 of the oil filling valve, the one-way sealing passage 41 of the oil filling valve is communicated with the manual pressurizing variable space 25, a large piston rod 27 is inserted into the manual pressurizing variable space 25, a large piston rod return spring limiting check ring 28 is fixedly installed at the upper end of the large piston rod 27, a large piston rod return spring 26 is sleeved outside a piston cylinder structure formed by the large piston rod 27 and the manual pressurizing variable space 25, the upper end of the large piston rod return spring 26 abuts against the large piston rod return spring limiting check ring 28, the lower end of the large piston rod return spring abuts against the outer side of the manual pressurizing variable space 25 in the pump body 1, the top end of the large piston rod 27 is in contact with a roller 29, the roller 29 is installed at the front end of the cam 30 through a shaft, the other end of the cam 30 is fixedly installed on a handle 31, and the handle 31 extends out of the pump body 1; the manual pressurizing variable space 25 is communicated with the oiling valve oil outlet one-way sealing passage 38 through the oiling valve oil outlet passage 40, the inner diameter of the oiling valve oil outlet one-way sealing passage 38 is larger than that of the oiling valve oil outlet passage 40, the bottom end of the oiling valve oil outlet one-way sealing passage 38 is blocked by an oiling valve inner hexagonal screw plug 34, an oiling valve oil outlet one-way sealing spring 75 is arranged in the oiling valve oil outlet one-way sealing passage 38, the lower end of the oiling valve oil outlet one-way sealing spring 75 is fixed on the oiling valve inner hexagonal screw plug 34, the upper end of the oiling valve oil outlet one-way sealing spring 75 props against an oiling valve oil outlet one-way sealing steel ball 39, the oiling valve oil outlet one-way sealing steel ball 39 is arranged between the oiling valve oil outlet one-way sealing passage 38 and the oiling valve oil outlet passage 40, the diameter of the oiling valve oil outlet one-way sealing steel ball 39 is larger than that of the oiling valve oil outlet passage 40 but smaller than that of the oiling valve oil outlet one-way sealing passage 38, the oil filling valve oil suction one-way sealing passage 41, the oil filling valve oil suction inlet passage 43, the oil filling valve oil outlet passage 40 and the oil filling valve oil outlet one-way sealing passage 38 are arranged in the oil filling valve 35, the oil filling valve 35 is arranged in the pump body 1, the outer wall of the oil filling valve 35 is provided with an oil filling valve annular space 36, the oil filling valve oil outlet one-way sealing passage 38 is communicated with the oil filling valve annular space 36 through the oil filling valve oil outlet inlet annular space passage 37, the pump body 1 corresponding to the oil filling valve annular space 36 is provided with a manual pressing oil outlet passage 24, and the manual pressing oil outlet passage 24 is sequentially communicated with the first manual pressing oil outlet common passage 23, the second manual pressing oil outlet common passage 50 and the third manual pressing oil outlet common passage 51; a straight valve core 32 is inserted in the pump body 1, a handle is arranged on the part of the straight valve core 32 extending out of the pump body 1, a 90-degree angle limit clamping groove 76 is arranged on the end part of the straight valve core 32 extending into the pump body 1, one end of a straight valve core limit bolt 66 is inserted in the limit clamping groove 76, the other end is fixedly connected with the pump body 1, a straight valve core internal passage 52 is longitudinally arranged in the straight valve core 32, a first straight valve core oil inlet passage 53, a first straight valve core oil outlet passage 69, a second straight valve core oil inlet passage 56 and a second straight valve core oil outlet passage 72 are arranged on the straight valve core 32, the positions of the first straight valve core oil inlet passage 53 and the second straight valve core oil inlet passage 56 form a 90-degree angle and correspond to the 90-degree angle of the limit clamping groove 76, a first pipe joint 67 and a second pipe joint 68 are arranged outside the pump body 1, and a first pipe joint connecting passage 59 and a second pipe joint connecting passage 65 are respectively arranged in the pump body 1 corresponding to the first pipe joint 67 and the second pipe joint 68, a straight valve core oil return passage 60 is arranged on the outer edge of the straight valve core 32 corresponding to the third manual pressing oil outlet common passage 51, the first pipe joint connecting passage 59 and the second pipe joint connecting passage 65, the straight valve core oil return passage 60 is communicated with the pump body straight valve core oil return common passage 63 and the oil storage tank oil return passage 61 in sequence, a first valve core plug 55 and a third valve core plug 73 with sealing function are respectively arranged on the straight valve core 32 corresponding to the third manual pressing oil outlet common passage 51 and the second pipe joint connecting passage 65, a first valve core plug oil inlet passage 54 with two ends respectively communicated with the third manual pressing oil outlet common passage 51 and the first straight valve core oil inlet passage 53 is arranged in the first valve core plug 55, a first valve core plug oil outlet passage 64 with two ends respectively communicated with the second pipe joint connecting passage 65 and the first straight valve core oil outlet passage 69 is arranged in the third valve core plug 73, and the first pipe joint connecting passage 59 is communicated with the straight valve core oil outlet passage 60, the oil storage tank oil return passage 61 is communicated with the oil storage tank 4 through a pipeline; the upper end of the pump body straight valve core oil return common passage 63 is communicated with the pump body inner space 70 through the pump body oil return passage 62, and the cam 30 is arranged in the pump body inner space 70; a second valve core plug 57 is arranged on the straight valve core 32 corresponding to the second straight valve core oil inlet passage 56, and a second valve core plug oil inlet passage 58 is arranged in the second valve core plug 57, and two ends of the second valve core plug oil inlet passage are respectively communicated with the third manual pressing oil outlet shared passage 51 and the second straight valve core oil inlet passage 56; a second straight valve core oil outlet passage 72 is formed in the straight valve core 32 corresponding to the first pipe joint connecting passage 59, a fourth valve core plug 74 is arranged on the straight valve core 32 at the outer end of the second straight valve core oil outlet passage 72, and a second valve core plug oil outlet passage 71 is formed in the fourth valve core plug 74, and two ends of the second valve core plug oil outlet passage 71 are respectively communicated with the first pipe joint connecting passage 59 and the second straight valve core oil outlet passage 72;

the electric part structure: the manual pressurizing oil inlet passage 14 is communicated with the electric pressurizing oil inlet passage 12, the electric pressurizing oil inlet passage 12 is communicated with the small oil sealing plug outer annular space 10, the small oil sealing plug outer annular space 10 is communicated with the small oil sealing plug inner side space 16 through the small oil sealing plug oil inlet hole 11, the small oil sealing plug inner side space 16 is communicated with the small valve seat space 17 through the small valve seat inner passage 22, the small valve seat space 17 is communicated with the first electric pressurizing oil outlet passage 45 through the small valve body oil outlet passage 44, the first electric pressurizing oil outlet passage 45 is communicated with the electric pressurizing oil outlet one-way sealing passage 48, an electric pressurizing oil outlet one-way sealing spring 47 is arranged in the electric pressurizing oil outlet one-way sealing passage 48, the bottom end of the electric pressurizing oil outlet one-way sealing spring 47 is propped against the bottom end of the electric pressurizing oil outlet one-way sealing steel ball 46, and the electric pressurizing oil outlet one-way sealing steel ball 46 is correspondingly arranged on the electric pressurizing oil outlet opening of the first electric pressurizing oil outlet passage 45, the inner diameter of the electric oil-pressing one-way sealing passage 48 is larger than the diameter of the electric oil-pressing one-way sealing steel ball 46, the diameter of the electric oil-pressing one-way sealing steel ball 46 is larger than the inner diameter of the first electric oil-pressing passage 45, and the electric oil-pressing one-way sealing passage 48 is communicated with the first manual oil-pressing shared passage 23 through the second electric oil-pressing passage 49.

The figures in the drawings illustrate the invention:

1. pump body

2. Oil inlet mounting hole of oil storage tank

3. Fixing point of oil storage tank

4. Oil storage tank

5. Oil scale

6. Transparent oil pipe

7. Oil return mounting hole of oil storage tank

8. Motor mounting hole

9. Pump body total oil inlet

10. Annular space outside small oil seal plug

11. Small oil seal plug screw inlet

12. Electric pressurizing oil inlet passage

13. Large oil seal screw plug oil inlet

14. Manual pressurizing oil inlet passage

15. Annular space outside large oil seal plug screw

16. Inner space of small oil seal plug screw

17. Space of small valve seat

18. Small valve body

19. Small piston rod return spring

20. Small piston rod reset spring limit retainer ring

21. Small piston rod

22. Internal passage of small valve seat

23. First-number manual and electric pressing oil outlet shared passage

24. Manual pressing oil outlet passage

25. Manual pressing variable space

26. Large piston rod reset spring

27. Big piston rod

28. Large piston rod reset spring limit retainer ring

29. Roller wheel

30. Cam wheel

31. Handle bar

32. Straight valve core

33. Inner space of large oil seal screw plug

34. Inner hexagonal plug screw of oil filling valve

35. Oil filling valve

36. Oil filling valve annular space

37. Oil outlet passage of oil filling valve into annular space

38. Oil outlet one-way sealing passage of oil filling valve

39. Oil outlet one-way sealing steel ball of oil filling valve

40. Oil outlet passage of oil filling valve

41. Oil suction one-way sealing passage of oil injection valve

42. Oil suction one-way sealing steel ball of oil injection valve

43. Oil suction inlet passage of oil injection valve

44. Small valve body oil outlet passage

45. No. one electronic oil outlet way of suppressing

46. Electric pressing oil outlet one-way sealing steel ball

47. Electric pressing oil outlet one-way sealing spring

48. Electric pressurizing oil outlet one-way sealing passage

49. No. two electric pressing oil outlet passage

50. Second-number manual and electric pressing oil outlet shared passage

51. Three-number manual and electric pressing oil outlet shared passage

52. Straight valve core internal passage

53. Oil inlet passage of first straight valve core

54. First valve core plug oil inlet passage

55. Valve core plug (separating oil inlet and return of straight valve core)

56. No. two straight valve core oil inlet passage

57. Second valve core plug (separating oil inlet and return of straight valve core)

58. No. two case stopper oil inlet passage

59. First pipe joint connecting passage

60. Oil return passage with straight valve core

61. Oil return passage of oil storage tank

62. Pump body oil return passage

63. Pump body straight valve core oil return shared passage

64. First valve core plug oil outlet passage

65. Second pipe joint connecting passage

66. Straight valve core limiting bolt

67. First pipe joint

68. Second pipe joint

69. Oil outlet passage of first straight valve core

70. Internal space of pump body

71. No. two case stopper oil outlet passage

72. No. two straight valve core oil outlet passage

73. Valve core plug No. three (separating oil inlet and return of straight valve core)

74. Valve core plug No. four (separating oil inlet and return of straight valve core)

75. Oil outlet one-way sealing spring of oil filling valve

76. Limiting clamping groove

The invention adopts electric and manual ascending or descending principles:

lifting state, No. two coupling 68 produce oil, No. one coupling 67 manual oil pumping principle of oil return:

hydraulic oil in the oil storage tank 4) enters a main oil inlet 9 of a pump body through an oil outlet 2 of the oil storage tank, flows through a manual pressurizing oil inlet passage 14, enters an outer annular space 15 of a large oil seal screw plug, enters an inner space 33 of the large oil seal screw plug through an oil inlet hole 13 of the large oil seal screw plug, when a handle 31 is rotated to drive a cam 30 and a roller 29 to rotate upwards, a large piston rod return spring 26 drives a large piston rod 27 and a large piston rod return spring limit retainer ring 28 to move upwards together, the manual pressurizing variable space 25 is enlarged to form negative pressure, an oil suction one-way sealing steel ball 42 of the oil filling valve is lifted, the hydraulic oil enters a passage 43 and an oil suction one-way sealing passage 41 of the oil filling valve through the oil suction valve from the inner space 33 of the large oil seal screw plug and enters the enlarged manual pressurizing variable space 25, then the handle 31 is rotated to drive the cam 30 and the roller 29 to rotate downwards, the roller 29 presses the large piston rod 27 to move downwards, the manual pressurizing variable space 25 is reduced, the pressure of hydraulic oil in the manual pressurizing variable space is increased, the oil suction one-way sealing steel ball 42 of the oil filling valve is pressed down, the oil suction one-way sealing passage 41 of the oil filling valve is sealed, the oil outlet one-way sealing steel ball 39 of the oil filling valve is jacked open, pressurized hydraulic oil flows into the oil outlet one-way sealing passage 38 of the oil filling valve through the oil outlet passage 40 of the oil filling valve, and flows into the annular space passage 37 of the oil filling valve to enter the annular space 36 of the oil filling valve through the oil outlet passage 37 of the oil filling valve. Finally, the hydraulic oil flows through the manual and electric pressure oil outlet passage 24, the manual and electric pressure oil outlet passage 50 and the manual and electric pressure oil outlet passage 51, the valve plug oil inlet passage 54 of the valve plug 55 on the straight valve plug 32 and the straight valve plug oil inlet passage 53 into the straight valve plug internal passage 52, at the moment, the valve plug 73 is communicated with the pipe joint 2 connecting passage 65, and the hydraulic oil flows through the straight valve plug internal passage 52, the straight valve plug oil outlet passage 69, the valve plug oil outlet passage 64 and the pipe joint 2 connecting passage 65 and flows to the hydraulic cylinder lower cavity from the pipe joint 268. Hydraulic oil in the upper chamber of the hydraulic cylinder enters a connecting passage 59 of the pipe joint 1 through a pipe joint 67, passes through a straight valve core oil return passage 60, a pump body and straight valve core oil return shared passage 63 and an oil storage tank oil return passage 61, and flows back to the oil storage tank 4. If the oil level in the pump body is higher than the plane of the inlet of the oil return passage of the pump body, the redundant hydraulic oil of the pump body also flows back to the oil storage tank 4 through the oil return shared passage 63 of the pump body and the straight valve core and the oil return passage 61 of the oil storage tank.

Descending, oil outlet of the pipe joint 67 and oil return of the pipe joint 68 based on a manual oil pumping principle:

the straight valve core rotates 90 degrees anticlockwise, hydraulic oil in the oil storage tank 4) enters a main oil inlet 9 of a pump body through an oil outlet 2 of the oil storage tank, flows through a manual pressurizing oil inlet passage 14, enters an outer annular space 15 of a large oil seal screw plug, enters an inner space 33 of the large oil seal screw plug through an oil inlet hole 13 of the large oil seal screw plug, when a handle 31 is rotated to drive the cam 30 and the roller 29 to rotate upwards, a large piston rod return spring 26 drives a large piston rod 27 and a large piston rod return spring limit retainer ring 28 to move upwards together, the manual pressurizing variable space 25 is enlarged to form negative pressure, an oil suction one-way sealing steel ball 42 of the oil filling valve is lifted, the hydraulic oil enters a passage 43 and an oil suction one-way sealing passage 41 of the oil filling valve from the inner space 33 of the large oil seal screw plug through the oil suction valve, enters the enlarged manual pressurizing variable space 25, then the handle 31 is rotated to drive the cam 30 and the roller 29 to rotate downwards, the roller 29 presses the large piston rod 27 to move downwards, the manual pressing variable space 25 becomes small, the pressure of hydraulic oil in the manual pressing variable space becomes large, the oil suction one-way sealing steel ball 42 of the oil filling valve is pressed down, the oil suction one-way sealing passage 41 of the oil filling valve is sealed, the oil outlet one-way sealing steel ball 39 of the oil filling valve is pushed open, the pressurized hydraulic oil flows into the oil outlet one-way sealing passage 38 of the oil filling valve through the oil outlet passage 40 of the oil filling valve, and the pressurized hydraulic oil enters the annular space passage 37 of the oil filling valve to enter the annular space 36 of the oil filling valve. Finally, the hydraulic oil flows through the manual and electric pressure oil outlet passage 24, the manual and electric pressure oil outlet common passage 23, the manual and electric pressure oil outlet common passage 50 and the manual and electric pressure oil outlet common passage 51, the valve plug oil inlet passage 58 of the valve plug 57 on the straight valve plug 32 and the straight valve plug oil inlet passage 56 into the straight valve plug inner passage 52, at the moment, the valve plug 74 is communicated with the pipe joint 1 connecting passage 59, the hydraulic oil flows through the straight valve plug inner passage 52, the straight valve plug oil outlet passage 71, the valve plug oil outlet passage 72 and the pipe joint 1 connecting passage 59 and flows to the lower cavity of the hydraulic cylinder through the pipe joint 67. Hydraulic oil in the upper chamber of the hydraulic cylinder enters a connecting passage 65 of the pipe joint 2 through a pipe joint 68 and flows back to the oil storage tank 4 through a straight valve core oil return passage 60, a pump body and a straight valve core oil return shared passage 63 and an oil storage tank oil return passage 61. If the oil level in the pump body is higher than the plane of the inlet of the oil return passage of the pump body, the redundant hydraulic oil of the pump body also flows back to the oil storage tank 4 through the oil return shared passage 63 of the pump body and the straight valve core and the oil return passage 61 of the oil storage tank.

Lifting state, the pipe joint 68 produces oil, and the pipe joint 67 returns oil and adopts an electric oil pumping principle:

hydraulic oil in the oil storage tank 4) enters a main oil inlet 9 of a pump body through an oil outlet 2 of the oil storage tank, flows through an electric pressurizing oil inlet passage 12, enters an outer annular space 10 of the small oil sealing plug, enters an inner space 16 of the small oil sealing plug through an oil inlet hole 11 of the small oil sealing plug, when a motor rotates eccentrically, a small piston rod return spring 26 is continuously compressed and rebounded, a small piston rod 21 and a small piston rod return spring limit retainer ring 20 move up and down repeatedly together to realize continuous change of an electric pressurizing variable space 17, when the electric pressurizing variable space 17 is enlarged, negative pressure is formed, a small valve seat one-way sealing structure is opened, the hydraulic oil enters the enlarged electric pressurizing variable space 17 through an inner passage 22 of the small oil sealing plug from the inner space 16 of the small oil sealing plug, when the electric pressurizing variable space 17 is enlarged, the internal pressure of the hydraulic oil is enlarged, and the small valve seat one-way sealing structure is closed, the internal passage 22 of the small valve seat is sealed, the pressurized hydraulic oil flows into the electric oil pumping passage 45 through the oil pumping passage 44 of the small valve body, and the electric oil pumping one-way sealing steel ball 46 and the electric oil pumping one-way sealing spring 47 are pushed open to enter the electric oil pumping one-way sealing passage 48. Finally, the hydraulic oil flows through the electric pressurizing oil outlet passage 49, the manual and electric pressurizing oil outlet common passage 23, the manual and electric pressurizing oil outlet common passage 50 and the manual and electric pressurizing oil outlet common passage 51, the valve plug oil inlet passage 54 of the valve plug 55 on the straight valve plug 32 and the straight valve plug oil inlet passage 53 into the straight valve plug internal passage 52, at the moment, the valve plug 73 is communicated with the pipe joint 2 connecting passage 65, and the hydraulic oil flows through the straight valve plug internal passage 52, the straight valve plug oil outlet passage 69, the valve plug oil outlet passage 64 and the pipe joint 2 connecting passage 65 and flows to the lower cavity of the hydraulic cylinder through the pipe joint 68. Hydraulic oil in the upper chamber of the hydraulic cylinder enters a connecting passage 59 of the pipe joint 1 through a pipe joint 67, passes through a straight valve core oil return passage 60, a pump body and straight valve core oil return shared passage 63 and an oil storage tank oil return passage 61, and flows back to the oil storage tank 4. If the oil level in the pump body is higher than the plane of the inlet of the oil return passage of the pump body, the redundant hydraulic oil of the pump body also flows back to the oil storage tank 4 through the oil return shared passage 63 of the pump body and the straight valve core and the oil return passage 61 of the oil storage tank.

Descending, oil outlet of the pipe joint 67 and oil return of the pipe joint 68 are realized according to the electric oil pumping principle:

the straight valve core rotates 90 degrees anticlockwise, hydraulic oil in the oil storage tank 4) enters a main oil inlet 9 of a pump body through an oil outlet 2 of the oil storage tank, flows through an electric pressurizing oil inlet passage 12 and enters an outer annular space 10 of a small oil sealing plug, and enters an inner space 16 of the small oil sealing plug through an oil inlet hole 11 of the small oil sealing plug, when a motor rotates eccentrically, a small piston rod reset spring 26 is continuously compressed and rebounded, a small piston rod 21 and a small piston rod reset spring limit retainer ring 20 move up and down repeatedly together to realize continuous change of an electric pressurizing variable space 17, when the electric pressurizing variable space 17 is enlarged, negative pressure is formed, a small valve seat one-way sealing structure is opened, the hydraulic oil enters the enlarged electric pressurizing variable space 17 from the inner space 16 of the small oil sealing plug through an inner passage 22 of the small valve seat, and when the electric pressurizing variable space 17 is enlarged, the pressure of the hydraulic oil in the small oil sealing plug is increased, the one-way sealing structure of the small valve seat is closed to seal the internal passage 22 of the small valve seat, the pressurized hydraulic oil flows into the electric pressurizing oil outlet passage 45 through the small valve body oil outlet passage 44, and the electric pressurizing oil outlet one-way sealing steel ball 46 and the electric pressurizing oil outlet one-way sealing spring 47 are ejected to enter the electric pressurizing oil outlet one-way sealing passage 48. Finally, the hydraulic oil flows through the electric pressurizing oil outlet passage 49, the manual and electric pressurizing oil outlet common passage 23, the manual and electric pressurizing oil outlet common passage 50 and the manual and electric pressurizing oil outlet common passage 51, the valve core plug oil inlet passage 58 of the valve core plug 57 on the straight valve core 32 and the straight valve core inner passage 52 through the straight valve core oil inlet passage 56, at the moment, the valve core plug 74 is communicated with the pipe joint connecting passage 59, and the hydraulic oil flows to the lower cavity of the hydraulic cylinder through the straight valve core inner passage 52, the straight valve core oil outlet passage 71, the valve core plug oil outlet passage 72 and the pipe joint connecting passage 59 and flows to the lower cavity of the hydraulic cylinder through the pipe joint 67. Hydraulic oil in the upper chamber of the hydraulic cylinder enters the pipe joint connecting passage 65 through the pipe joint 68 and flows back to the oil storage tank 4 through the straight valve core oil return passage 60, the pump body and the straight valve core oil return shared passage 63 and the oil storage tank oil return passage 61. If the oil level in the pump body is higher than the plane of the inlet of the oil return passage of the pump body, the redundant hydraulic oil of the pump body also flows back to the oil storage tank 4 through the oil return shared passage 63 of the pump body and the straight valve core and the oil return passage 61 of the oil storage tank.

Claims (1)

1. The utility model provides a compact body structure hand electric pump which characterized in that: the oil storage tank (4) is inserted in the pump body (1) through the oil storage tank oil inlet mounting hole (2) and the oil storage tank oil return mounting hole (7) and is communicated with a pipeline in the pump body (1) through the oil storage tank oil inlet mounting hole (2) and the oil storage tank oil return mounting hole (7); a transparent oil pipe (6) communicated with the inside of the oil storage tank (4) is arranged on the oil storage tank (4), and an oil scale (5) is arranged on the side wall of the oil storage tank (4) corresponding to the transparent oil pipe (6); the motor is arranged on the pump body (1) through a motor mounting hole (8); the interior of the pump body (1) is divided into a manual part and an electric part;

manual part structure: the bottom of an oil inlet mounting hole (2) of an oil storage tank is provided with a pump body main oil inlet hole (9), the pump body main oil inlet hole (9) is communicated with an annular space (15) at the outer side of a large oil sealing screw plug through a manual oil pumping channel (14), the annular space (15) at the outer side of the large oil sealing screw plug is communicated with an inner side space (33) of the large oil sealing screw plug through an oil inlet hole (13) of the large oil sealing screw plug, the inner side space (33) of the large oil sealing screw plug is communicated with an oil suction inlet channel (43) of an oil filling valve, the oil suction inlet channel (43) of the oil filling valve is communicated with an oil suction one-way sealing channel (41) of the oil filling valve, the inner diameter of the oil suction inlet channel (43) of the oil filling valve is smaller than the inner diameter of the oil suction one-way sealing channel (41) of the oil filling valve, an oil suction one-way sealing steel ball (42) of the oil filling valve is arranged in the oil suction one-way sealing channel (41) of the oil filling valve, the diameter of the oil filling valve is larger than the inner diameter of the oil suction inlet channel (43) of the oil filling valve but smaller than the oil suction one-way sealing channel (41) of the oil filling valve, the oil suction one-way sealing passage (41) of the oil filling valve is communicated with the manual pressurizing variable space (25), a large piston rod (27) is inserted in the manual pressing variable space (25), a large piston rod return spring limiting retainer ring (28) is fixedly arranged at the upper end of the large piston rod (27), a large piston rod return spring (26) is sleeved outside a piston cylinder body structure formed by a large piston rod (27) and a manual pressing variable space (25), the upper end of the large piston rod return spring (26) is propped against a large piston rod return spring limiting retainer ring (28), the lower end of the large piston rod return spring (26) is propped against the outer side of the manual pressing variable space (25) in the pump body (1), the top end of the large piston rod (27) is contacted with a roller (29), the roller (29) is installed at the front end of a cam (30) through a shaft, the other end of the cam (30) is fixedly installed on a handle (31), and the handle (31) extends out of the pump body (1); the manual pressing variable space (25) is communicated with the oiling valve oiling one-way sealing passage (38) through the oiling valve oiling passage (40), the inner diameter of the oiling valve oiling one-way sealing passage (38) is larger than that of the oiling valve oiling passage (40), the bottom end of the oiling valve oiling one-way sealing passage (38) is blocked through an oiling valve inner hexagonal plug (34), an oiling valve oiling one-way sealing spring (75) is arranged in the oiling valve oiling one-way sealing passage (38), the lower end of the oiling valve oiling one-way sealing spring (75) is fixed on the oiling valve inner hexagonal plug (34), the upper end of the oiling valve oiling one-way sealing spring (75) pushes against an oiling valve oiling one-way sealing steel ball (39), the oiling valve oiling one-way sealing steel ball (39) is arranged between the oiling valve oiling one-way sealing passage (38) and the oiling valve oiling passage (40), and the diameter of the oiling valve oiling one-way sealing steel ball (39) is larger than that of the oiling valve oiling passage (40), but is smaller than the inner diameter of the oil outlet one-way sealing passage (38) of the oil filling valve, the oil suction one-way sealing passage (41) of the oil filling valve, the oil suction inlet passage (43) of the oil filling valve, the oil outlet passage (40) of the oil filling valve and the oil outlet one-way sealing passage (38) of the oil filling valve are arranged in the oil filling valve (35), the oil filling valve (35) is arranged in the pump body (1), an oil filling valve annular space (36) is arranged on the outer wall of the oil filling valve (35), an oil outlet one-way sealing passage (38) of the oil filling valve enters the annular space passage (37) through oil outlet of the oil filling valve and is communicated with the oil filling valve annular space (36), a manual oil-pressing and discharging passage (24) is formed in the pump body (1) corresponding to the annular space (36) of the oil filling valve, and the manual oil-pressing and discharging passage (24) is sequentially communicated with a first manual oil-pressing and discharging shared passage (23), a second manual oil-pressing and discharging shared passage (50) and a third manual oil-pressing and discharging shared passage (51); a straight valve core (32) is inserted in the pump body (1), a handle is installed on the part of the straight valve core (32) extending out of the pump body (1), a 90-degree angle limiting clamping groove (76) is formed in the end part of the straight valve core (32) extending into the pump body (1), one end of a straight valve core limiting bolt (66) is inserted in the limiting clamping groove (76), the other end of the straight valve core limiting bolt is fixedly connected with the pump body (1), a straight valve core inner passage (52) is longitudinally formed in the straight valve core (32), a first straight valve core oil inlet passage (53), a first straight valve core oil outlet passage (69), a second straight valve core oil inlet passage (56), a second straight valve core oil outlet passage (72), a first straight valve core oil inlet passage (53) and a second straight valve core oil inlet passage (56) are arranged on the straight valve core (32) at 90-degree angles and correspond to the 90-degree angle of the limiting clamping groove (76), a first pipe joint (67) and a second pipe joint (68) are installed outside the pump body (1), a first pipe joint connecting passage (59) and a second pipe joint connecting passage (65) are respectively arranged in a pump body (1) corresponding to a first pipe joint (67) and a second pipe joint (68), a circle of straight valve core oil return passage (60) is arranged at the outer edge of a straight valve core (32) corresponding to a third manual pressing oil outlet common passage (51), the first pipe joint connecting passage (59) and the second pipe joint connecting passage (65), the straight valve core oil return passage (60) is sequentially communicated with a pump body straight valve core oil return common passage (63) and an oil storage tank oil return passage (61), a first valve core plug (55) and a third valve core plug (73) with sealing functions are respectively arranged on the straight valve core (32) corresponding to the third manual pressing oil outlet common passage (51) and the second pipe joint connecting passage (65), and two ends in the first valve core plug (55) are respectively communicated with the third manual pressing oil outlet common passage (51) and the first valve plug (53) The oil inlet passage (54), the first valve core plug oil outlet passage (64) with two ends respectively communicated with the second pipe joint connecting passage (65) and the first straight valve core oil outlet passage (69) is arranged in the third valve core plug (73), the first pipe joint connecting passage (59) is communicated with the straight valve core oil return passage (60), and the oil storage tank oil return passage (61) is communicated with the oil storage tank (4) through a pipeline; the upper end of a pump body straight valve core oil return common passage (63) is communicated with the pump body inner space (70) through a pump body oil return passage (62), and a cam (30) is arranged in the pump body inner space (70); a second valve core plug (57) is arranged on the straight valve core (32) corresponding to the second straight valve core oil inlet passage (56), and two ends of the second valve core plug (57) are respectively communicated with a third manual pressing oil outlet common passage (51) and the second straight valve core oil inlet passage (56) to form a second valve core plug oil inlet passage (58); a second straight valve core oil outlet passage (72) is formed in the straight valve core (32) corresponding to the first pipe joint connecting passage (59), a fourth valve core plug (74) is arranged on the straight valve core (32) at the outer end of the second straight valve core oil outlet passage (72), and a second valve core plug oil outlet passage (71) with two ends respectively communicated with the first pipe joint connecting passage (59) and the second straight valve core oil outlet passage (72) is formed in the fourth valve core plug (74);

the electric part structure: the manual pressurizing oil inlet passage (14) is communicated with the electric pressurizing oil inlet passage (12), the electric pressurizing oil inlet passage (12) is communicated with an annular space (10) at the outer side of the small oil sealing screw plug, the annular space (10) at the outer side of the small oil sealing screw plug is communicated with an inner side space (16) of the small oil sealing screw plug through a small oil sealing screw plug oil inlet hole (11), the inner side space (16) of the small oil sealing screw plug is communicated with a small valve seat space (17) through a small valve seat inner passage (22), the small valve seat space (17) is communicated with a first electric pressurizing oil outlet passage (45) through a small valve body oil outlet passage (44), the first electric pressurizing oil outlet passage (45) is communicated with an electric pressurizing oil outlet one-way sealing passage (48), an electric pressurizing oil outlet one-way sealing spring (47) is arranged in the electric pressurizing oil outlet one-way sealing passage (48), and the bottom end of the electric pressurizing oil outlet one-way sealing spring (47) is arranged at the bottom end of a top sealing passage (48) of the electric pressurizing oil outlet one-way sealing passage (48), the upper end is propped against the electric oil-pressing one-way sealing steel ball (46), the electric oil-pressing one-way sealing steel ball (46) corresponds to an oil port of the first electric oil-pressing passage (45), wherein the inner diameter of the electric oil-pressing one-way sealing passage (48) is larger than the diameter of the electric oil-pressing one-way sealing steel ball (46), the diameter of the electric oil-pressing one-way sealing steel ball (46) is larger than the inner diameter of the first electric oil-pressing passage (45), and the electric oil-pressing one-way sealing passage (48) is communicated with the first manual oil-pressing shared passage (23) through the second electric oil-pressing passage (49).

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