Electric push rod

Abstract

The utility model discloses an electric push rod, which belongs to the technical field of reciprocating linear application, and comprises a shell, the top of the shell is fixedly connected with a first shell, the inner side of the first shell is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a rotating shaft, and the outer side of the rotating shaft is fixedly connected with a first gear. The outer side of the first rod is fixedly connected with a third gear, the outer side of the third gear is meshed with a fourth gear, the inner side of the fourth gear is fixedly connected with a second rod, the outer side of the second rod is fixedly connected with a fifth gear, and the outer side of the fifth gear is meshed with a sixth gear. The electric push rod is reasonable in structural design, and through cooperation of the driving motor, the rotating shaft, the first gear, the second gear and the rotator, the electric push rod can provide larger pushing force in a short distance, so that the electric push rod is helped to use and work.

Description

Technical Field

[0001] The utility model relates to the technical field of reciprocating linear applications, in particular to an electric push rod. Background Art

[0002] Electric push rods, also known as linear actuators, are mainly driven by gears and screws to achieve linear reciprocating motion. The motor is powered on to drive the gear box, which is then driven by the screw and nut. In conventional use, the internal screw drive structure uses a plastic nut for transmission, which has a high efficiency, but does not have good impact resistance and good wear resistance.

[0003] In the existing electric linear actuator market, due to the lack of sufficient driving force in a short stroke, most plastic nuts cannot perform high-load movement, which easily affects the user's use; therefore, we propose an electric linear actuator to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide an electric push rod to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An electric push rod comprises: a shell, a No. 1 shell is fixedly connected to the top of the shell, and a driving motor is fixedly connected to the inner side of the No. 1 shell, an output end of the driving motor is fixedly connected to a rotating shaft, and a No. 1 gear is fixedly connected to the outer side of the rotating shaft, a No. 2 gear is meshed with the outer side of the No. 1 gear, a No. 1 rod is fixedly connected to the inner side of the No. 2 gear, a No. 3 gear is fixedly connected to the outer side of the No. 1 rod, a No. 4 gear is meshed with the outer side of the No. 3 gear, a No. 2 rod is fixedly connected to the inner side of the No. 4 gear, a No. 2 rod is fixedly connected to the outer side of the No. 2 rod, a No. 5 gear is fixedly connected to the outer side of the No. 5 gear, a No. 6 gear is meshed with the outer side of the No. 5 gear, a No. 3 rod is fixedly connected to the inside of the No. 6 gear, a No. 7 gear is fixedly connected to the outer side of the No. 3 rod, and a No. 8 gear is meshed with the outer side of the No. 7 gear.

[0007] Preferably, a cylindrical shell is fixedly connected to the inner side of the No. 8 gear, a rotating rod is fixedly connected to the inner side of the cylindrical shell, a trapezoidal screw is fixedly connected to the top of the rotating rod, and a limit block is threadedly connected to the outer side of the trapezoidal screw, a No. 2 shell is fixedly connected to the top of the outer shell, the inner side of the No. 2 shell is slidably connected to the outer side of the limit block, a moving rod is fixedly connected to the top of the limit block, and the outer side of the rotating rod is rotatably connected to the inner side of the outer shell.

[0008] Preferably, a connecting block is integrally formed on the top of the moving rod, and an anti-collision pad is fixedly connected to the top of the second shell.

[0009] Preferably, a main gear is fixedly connected to the outer side of the rotating rod, a fourth driven wheel is meshed on the outer side of the main gear, a fifth driven wheel is meshed on the outer side of the fourth driven wheel, a sixth driven wheel is meshed on the outer side of the fifth driven wheel, and a small gear is fixedly connected to the top of the sixth driven wheel, a medium gear is meshed on the outer side of the small gear, a large gear is meshed on the outer side of the medium gear, and a fixing cylinder is fixedly connected to the bottom of the large gear.

[0010] Preferably, a No. 1 driven wheel is meshed on the outer side of the main gear, a No. 2 driven wheel is fixedly connected to the bottom of the No. 1 driven wheel, a No. 3 driven wheel is meshed on the outer side of the No. 2 driven wheel, a rotator is provided on the inner side of the outer shell, and the output end of the rotator is fixedly connected to the inner side of the No. 3 driven wheel.

[0011] Preferably, the outer sides of the first rod, the second rod and the third rod are all rotatably connected to the inner side of the same shell.

[0012] In the utility model, the electric push rod is started to drive the driving motor so that the rotating shaft drives the No. 1 gear to rotate. When the No. 1 gear rotates, the No. 2 gear starts to rotate, so that the No. 3 gear drives the No. 4 gear to rotate, and further the No. 5 gear drives the No. 6 gear to rotate.

[0013] In the utility model, the electric push rod, when the sixth gear rotates, the seventh gear drives the eighth gear to rotate, so that the cylindrical shell drives the rotating rod, so that the trapezoidal screw rod rotates, so that the limit block drives the moving rod to move in the vertical direction;

[0014] The utility model has a reasonable structural design. Through the cooperation among the driving motor, the rotating shaft, the first gear, the second gear and the rotator, the electric push rod can provide a greater driving force in a shorter distance, thereby facilitating the use of work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of an electric push rod proposed by the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of an electric push rod proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the eighth gear and the third gear proposed in the utility model;

[0018] Figure 4 This is a schematic diagram of the large gear and small gear structure proposed by the utility model.

[0019] In the figure: 1. shell; 2. shell No. 1; 3. shell No. 2; 4. anti-collision pad; 5. driving motor; 6. gear No. 1; 7. rotating shaft; 8. gear No. 2; 9. gear No. 3; 10. rod No. 1; 11. gear No. 4; 12. gear No. 5; 13. rod No. 2; 14. gear No. 6; 15. gear No. 7; 16. rod No. 3; 17. gear No. 8; 18. trapezoidal lead screw; 19. cylindrical shell; 20. trapezoidal lead screw; 21. limit block; 22. moving rod; 23. main gear; 24. driven wheel No. 1; 25. driven wheel No. 2; 26. driven wheel No. 3; 27. rotator; 28. driven wheel No. 4; 29. ​​driven wheel No. 5; 30. driven wheel No. 6; 31. small gear; 32. medium gear; 33. large gear; 34. fixed cylinder. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 , an electric push rod comprises: a shell 1, a No. 1 shell 2 is fixedly connected to the top of the shell 1, and a driving motor 5 is fixedly connected to the inner side of the No. 1 shell 2, a rotating shaft 7 is fixedly connected to the output end of the driving motor 5, and a No. 1 gear 6 is fixedly connected to the outer side of the rotating shaft 7, a No. 2 gear 8 is meshed with the outer side of the No. 1 gear 6, a No. 1 rod 10 is fixedly connected to the inner side of the No. 2 gear 8, a No. 3 gear 9 is fixedly connected to the outer side of the No. 1 rod 10, a No. 4 gear 11 is meshed with the outer side of the No. 3 gear 9, a No. 2 rod 13 is fixedly connected to the inner side of the No. 4 gear 11, a No. 5 gear 12 is fixedly connected to the outer side of the No. 2 rod 13, a No. 6 gear 14 is meshed with the outer side of the No. 5 gear 12, a No. 3 rod 16 is fixedly connected to the inside of the No. 6 gear 14, a No. 7 gear 15 is fixedly connected to the outer side of the No. 3 rod 16, and a No. 8 gear 17 is meshed with the outer side of the No. 7 gear 15.

[0022] In this embodiment, a cylindrical shell 19 is fixedly connected to the inner side of the eighth gear 17, a rotating rod 18 is fixedly connected to the inner side of the cylindrical shell 19, a trapezoidal screw 20 is fixedly connected to the top of the rotating rod 18, and the outer side of the trapezoidal screw 20 is threadedly connected to a limiting block 21, a No. 2 shell 3 is fixedly connected to the top of the outer shell 1, the inner side of the No. 2 shell 3 is slidingly connected to the outer side of the limiting block 21, a moving rod 22 is fixedly connected to the top of the limiting block 21, the outer side of the rotating rod 18 is rotatably connected to the inner side of the outer shell 1, a connecting block is integrally formed on the top of the moving rod 22, and a crash pad 4 is fixedly connected to the top of the No. 2 shell 3 for protecting the device.

[0023] In this embodiment, the outer side of the rotating rod 18 is fixedly connected to the main gear 23, the outer side of the main gear 23 is meshed with the fourth driven wheel 28, the outer side of the fourth driven wheel 28 is meshed with the fifth driven wheel 29, the outer side of the fifth driven wheel 29 is meshed with the sixth driven wheel 30, and the top of the sixth driven wheel 30 is fixedly connected to the small gear 31, the outer side of the small gear 31 is meshed with a medium gear 32, the outer side of the medium gear 32 is meshed with a large gear 33, and the bottom of the large gear 33 is fixedly connected to the fixed gear 31. The outer side of the main gear 23 is meshed with a No. 1 driven wheel 24, the bottom of the No. 1 driven wheel 24 is fixedly connected to the No. 2 driven wheel 25, the outer side of the No. 2 driven wheel 25 is meshed with the No. 3 driven wheel 26, a rotator 27 is arranged on the inner side of the outer shell 1, the output end of the rotator 27 is fixedly connected to the inner side of the No. 3 driven wheel 26, the outer sides of the No. 1 rod 10, the No. 2 rod 13 and the No. 3 rod 16 are all rotatably connected to the inner side of the same outer shell 1, so that the rotation of the internal mechanism of the device is more stable.

[0024] In this embodiment, when in use, by starting the driving motor 5, the rotating shaft 7 drives the No. 1 gear 6 to rotate. When the No. 1 gear 6 rotates, the No. 2 gear 8 starts to rotate, so that the No. 3 gear 9 drives the No. 4 gear 11 to rotate, and further the No. 5 gear 12 drives the No. 6 gear 14 to rotate. When the No. 6 gear 14 rotates, the No. 7 gear 15 drives the No. 8 gear 17 to rotate, so that the cylindrical shell 19 drives the rotating rod 18, so that the trapezoidal lead screw 20 rotates, so that the limit block 21 drives the moving rod 22 to move in the vertical direction.

[0025] The above is a detailed introduction to an electric push rod provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An electric push rod, characterized in that: include: A housing (1), wherein a No. 1 housing (2) is fixedly connected to the top of the housing (1), and a driving motor (5) is fixedly connected to the inner side of the No. 1 housing (2), and a rotating shaft (7) is fixedly connected to the output end of the driving motor (5), and a No. 1 gear (6) is fixedly connected to the outer side of the rotating shaft (7), and a No. 2 gear (8) is meshed with the outer side of the No. 1 gear (6), and a No. 1 rod (10) is fixedly connected to the inner side of the No. 2 gear (8), and a No. 3 gear (9) is fixedly connected to the outer side of the No. 1 rod (10), and the No. 3 gear (9) is fixedly connected to the outer side of the No. 1 gear (6). The outer side of the third gear (9) is meshed with the fourth gear (11), the inner side of the fourth gear (11) is fixedly connected with the second rod (13), the outer side of the second rod (13) is fixedly connected with the fifth gear (12), the outer side of the fifth gear (12) is meshed with the sixth gear (14), the inner side of the sixth gear (14) is fixedly connected with the third rod (16), the outer side of the third rod (16) is fixedly connected with the seventh gear (15), and the outer side of the seventh gear (15) is meshed with the eighth gear (17).

2. The electric push rod according to claim 1, characterized in that: The inner side of the No. 8 gear (17) is fixedly connected to a cylindrical shell (19), the inner side of the cylindrical shell (19) is fixedly connected to a rotating rod (18), the top of the rotating rod (18) is fixedly connected to a trapezoidal screw rod (20), and the outer side of the trapezoidal screw rod (20) is threadedly connected to a limit block (21), the top of the outer shell (1) is fixedly connected to a No. 2 shell (3), the inner side of the No. 2 shell (3) is slidably connected to the outer side of the limit block (21), the top of the limit block (21) is fixedly connected to a moving rod (22), and the outer side of the rotating rod (18) is rotatably connected to the inner side of the outer shell (1).

3. The electric push rod according to claim 2, characterized in that: A connecting block is integrally formed on the top of the moving rod (22), and an anti-collision pad (4) is fixedly connected to the top of the second shell (3).

4. The electric push rod according to claim 2, characterized in that: The outer side of the rotating rod (18) is fixedly connected to a main gear (23), the outer side of the main gear (23) is meshed with a fourth driven wheel (28), the outer side of the fourth driven wheel (28) is meshed with a fifth driven wheel (29), the outer side of the fifth driven wheel (29) is meshed with a sixth driven wheel (30), and the top of the sixth driven wheel (30) is fixedly connected to a small gear (31), the outer side of the small gear (31) is meshed with a medium gear (32), the outer side of the medium gear (32) is meshed with a large gear (33), and the bottom of the large gear (33) is fixedly connected to a fixing cylinder (34).

5. The electric push rod according to claim 4, characterized in that: A first driven wheel (24) is meshed on the outer side of the main gear (23), a second driven wheel (25) is fixedly connected to the bottom of the first driven wheel (24), a third driven wheel (26) is meshed on the outer side of the second driven wheel (25), a rotator (27) is arranged on the inner side of the housing (1), and an output end of the rotator (27) is fixedly connected to the inner side of the third driven wheel (26).

6. The electric linear actuator according to claim 1, characterized in that: The outer sides of the first rod (10), the second rod (13) and the third rod (16) are all rotatably connected to the inner side of the same housing (1).

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