Straight stroke electric actuator

Abstract

The utility model discloses a straight stroke electric actuator which comprises a gear box, the top end of the gear box is fixedly connected with an electric control outer shell, the bottom of one end of the electric control outer shell is fixedly connected with a change-over switch, the top of one end of the electric control outer shell is fixedly connected with a display window, one end of the electric control outer shell is movably connected with an operation key, and the other end of the electric control outer shell is movably connected with a motor. And one side of the gear box is fixedly connected with a junction box. According to the straight-stroke electric actuator, by arranging the hand-cranking wheel, before working, the fixing shaft can be driven to move through the rocking handle, the fixing shaft can drive the hand-cranking wheel to rotate, the speed change gear in the gearbox is driven to move through the rotating shaft while the hand-cranking wheel rotates, and the internal adjusting structure is driven to move through the speed change gear; the operating speed of the device is adjusted, the anti-skid performance can be effectively improved through the anti-skid sleeve outside the rocking handle, adjustment is convenient, and the problem that the operating speed cannot be adjusted conveniently is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuators, in particular to a linear travel electric actuator. Background Art

[0002] Electric actuators are driving devices that use electric drive to drive internal structures for transmission. They play a very important role in many fields. Depending on the internal structure, they can be driven in different ways by linear or rotary motion. Linear electric actuators generally work in the form of pushing and supporting.

[0003] However, there are still some defects in the current linear electric actuators. The running speed cannot be adjusted according to the needs before use, resulting in the device only being able to move at the same speed, which results in a low scope of application.

[0004] Now a new type of linear electric actuator is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a linear electric actuator to solve the problem in the above background technology that the running speed cannot be conveniently adjusted.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a linear electric actuator, comprising a gear box, the top of the gear box is fixedly connected to an electric control housing, the bottom of one end of the electric control housing is fixedly connected to a switch, the top of one end of the electric control housing is fixedly connected to a display window, one end of the electric control housing is movably connected to an operation button, one side of the gear box is fixedly connected to a junction box, and the other side of the gear box is provided with an adjustment structure for adjusting the running speed;

[0007] The adjustment structure includes a hand-cranked wheel and a rotating shaft, one side of the gear box is movably connected with the rotating shaft, one side of the rotating shaft is fixedly connected with the hand-cranked wheel, the top of one side of the hand-cranked wheel is fixedly connected with a fixed shaft, the outside of the fixed shaft is movably connected with a crank handle, the outside of the fixed shaft is fixedly connected with an anti-slip sleeve, the bottom end of the gear box is movably connected with a speed change gear, the inside of the speed change gear is movably connected with a transmission screw main shaft, the inside of the electric control housing is fixedly connected with a DC brushless motor, the bottom end of the DC brushless motor is movably connected with a multi-turn encoder, one side of the DC brushless motor is fixedly connected with a control module, and the outside of the transmission screw main shaft is movably connected with a transmission gear.

[0008] Preferably, the center line of the fixed shaft and the center line of the crank are on the same vertical plane, and the center line of the hand-cranked wheel and the center line of the rotating shaft are on the same horizontal plane.

[0009] Preferably, the rotating shaft passes through one side of the gear box and extends to the interior of the gear box, and the output end of the brushless DC motor is fixedly connected to the transmission screw main shaft.

[0010] Preferably, the transmission screw main shaft passes through the bottom end of the gear box and extends to the outside of the gear box, and the center line of the transmission screw main shaft and the center line of the speed change gear are on the same vertical plane.

[0011] Preferably, the bottom end of the gear box is fixedly connected to a screw rod connecting seat, the bottom end of the screw rod connecting seat is fixedly connected to a fixed sleeve, the inside of the fixed sleeve is movably connected to a screw rod lifting seat, the bottom end of the outside of the screw rod lifting seat is fixedly connected to a connecting plate, the bottom end of the screw rod lifting seat is movably connected to a threaded connecting seat, the two sides of the bottom of the screw rod connecting seat are fixedly connected to supporting connecting rods, the bottom end of the supporting connecting rods is fixedly connected to a bottom plate, and a group of arc-shaped limit plates are fixedly connected to the four corners of the connecting plate.

[0012] Preferably, the arc-shaped limit plate is slidably connected to the supporting connecting rod, the screw lifting seat is threadedly connected to the transmission screw main shaft, and the center line of the screw lifting seat and the center line of the connecting plate are on the same vertical plane.

[0013] Preferably, the supporting connecting rods at the bottom end of the screw rod connecting seat are arranged symmetrically, and the fixing sleeve is connected to the interior of the screw rod connecting seat.

[0014] Preferably, the center line of the screw lifting seat and the center line of the fixed sleeve are on the same vertical plane, and the arc-shaped limit plates outside the connecting plate are arranged symmetrically.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the linear electric actuator can not only adjust the movement speed, but also improve the movement stability;

[0016] (1) By providing a hand-cranked wheel, a rotating shaft, a crank handle, a speed gear, a transmission screw main shaft, a fixed shaft and an anti-skid sleeve, before working, the crank handle can be used to drive the fixed shaft to move, and the fixed shaft can drive the hand-cranked wheel to rotate. When the hand-cranked wheel rotates, the speed gear inside the gear box is driven to move through the rotating shaft, and the speed gear drives the internal adjustment structure to move to adjust the running speed of the device. The anti-skid sleeve outside the crank handle can effectively improve the anti-skid performance to facilitate adjustment, thereby realizing that the running speed of the device can be adjusted;

[0017] (2) By providing a fixed sleeve, a screw lifting seat, a bottom plate, a supporting connecting rod, a connecting plate and an arc-shaped limit plate, during operation, the transmission screw main shaft drives the screw lifting seat inside the fixed sleeve to move, which will also drive the connecting plate outside it to move. The arc-shaped limit plate outside the connecting plate fits on the outside of the supporting connecting rod and can effectively limit the screw lifting seat through the connecting plate, thereby improving the stability of the screw lifting seat during movement, thereby achieving the goal of improving the stability of the output unit of the device during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the side cross-sectional structure of the electric control housing of the utility model;

[0020] Figure 3 This is a side view of the structure of the hand-cranked wheel of the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the connecting plate of the utility model from top view.

[0022] In the figure: 1. gear box; 2. hand wheel; 3. rotating shaft; 4. crank handle; 5. switching switch; 6. operating button; 7. display window; 8. electric control housing; 9. junction box; 10. screw connecting seat; 11. fixed sleeve; 12. screw lifting seat; 13. threaded connecting seat; 14. bottom plate; 15. supporting connecting rod; 16. connecting plate; 17. control module; 18. DC brushless motor; 19. multi-turn encoder; 20. transmission gear; 21. speed change gear; 22. transmission screw main shaft; 23. fixed shaft; 24. anti-slip sleeve; 25. arc limit plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-4 A linear electric actuator comprises a gear box 1, an electric control housing 8 is fixedly connected to the top of the gear box 1, a switch 5 is fixedly connected to the bottom of one end of the electric control housing 8, a display window 7 is fixedly connected to the top of one end of the electric control housing 8, an operation button 6 is movably connected to one end of the electric control housing 8, a junction box 9 is fixedly connected to one side of the gear box 1, and an adjustment structure for adjusting the running speed is arranged on the other side of the gear box 1;

[0025] The adjustment structure includes a hand-cranked wheel 2 and a rotating shaft 3, one side of the gear box 1 is movably connected with the rotating shaft 3, one side of the rotating shaft 3 is fixedly connected with the hand-cranked wheel 2, the top of one side of the hand-cranked wheel 2 is fixedly connected with a fixed shaft 23, the outside of the fixed shaft 23 is movably connected with a crank handle 4, the outside of the fixed shaft 23 is fixedly connected with an anti-slip sleeve 24, the bottom end of the gear box 1 is movably connected with a speed change gear 21, the inside of the speed change gear 21 is movably connected with a transmission screw main shaft 22, the inside of the electric control housing 8 is fixedly connected with a DC brushless motor 18, the bottom end of the DC brushless motor 18 is movably connected with a multi-turn encoder 19, one side of the DC brushless motor 18 is fixedly connected with a control module 17, and the outside of the transmission screw main shaft 22 is movably connected with a transmission gear 20;

[0026] The center line of the fixed shaft 23 and the center line of the crank handle 4 are in the same vertical plane, and the center line of the hand-cranked wheel 2 and the center line of the rotating shaft 3 are in the same horizontal plane;

[0027] The rotating shaft 3 passes through one side of the gear box 1 and extends to the inside of the gear box 1. The output end of the DC brushless motor 18 is fixedly connected to the transmission screw main shaft 22;

[0028] The transmission screw main shaft 22 passes through the bottom end of the gear box 1 and extends to the outside of the gear box 1. The center line of the transmission screw main shaft 22 and the center line of the speed change gear 21 are on the same vertical plane;

[0029] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, before working, the fixed shaft 23 can be driven to move by the crank handle 4, and the fixed shaft 23 can drive the hand wheel 2 to rotate. While the hand wheel 2 rotates, the speed change gear 21 inside the gear box 1 is driven to move through the rotating shaft 3, and the internal adjustment structure is driven to move through the speed change gear 21 to adjust the operating speed of the device. The anti-slip sleeve 24 outside the crank handle 4 can effectively improve the anti-slip performance to facilitate adjustment, thereby realizing that the operating speed of the device can be adjusted.

[0030] Embodiment 2: The bottom end of the gear box 1 is fixedly connected with a screw connection seat 10, the bottom end of the screw connection seat 10 is fixedly connected with a fixed sleeve 11, the inside of the fixed sleeve 11 is movably connected with a screw lifting seat 12, the bottom end of the outside of the screw lifting seat 12 is fixedly connected with a connecting plate 16, the bottom end of the screw lifting seat 12 is movably connected with a threaded connection seat 13, and a group of arc-shaped limit plates 25 are fixedly connected to the four corners of the connecting plate 16;

[0031] The arc-shaped limit plate 25 is slidably connected to the supporting connecting rod 15, the screw lifting seat 12 is threadedly connected to the transmission screw main shaft 22, and the center line of the screw lifting seat 12 and the center line of the connecting plate 16 are in the same vertical plane;

[0032] The supporting connecting rods 15 at the bottom end of the screw rod connecting seat 10 are arranged symmetrically, and the fixing sleeve 11 is connected to the inside of the screw rod connecting seat 10;

[0033] The center line of the screw lifting seat 12 and the center line of the fixed sleeve 11 are on the same vertical plane, and the arc-shaped limit plates 25 outside the connecting plate 16 are arranged symmetrically;

[0034] Specifically, Figure 1 , Figure 2 and Figure 4 As shown, during operation, the transmission screw spindle 22 drives the screw lifting seat 12 inside the fixed sleeve 11 to move, which will also drive the connecting plate 16 outside it to move. The arc-shaped limiting plate 25 outside the connecting plate 16 fits on the outside of the supporting connecting rod 15 and can effectively limit the screw lifting seat 12 through the connecting plate 16, thereby improving the stability of the screw lifting seat 12 during movement, thereby achieving the goal of improving the stability of the output unit of the device during movement.

[0035] Embodiment 3: Support connecting rods 15 are fixedly connected to both sides of the bottom of the screw rod connecting seat 10, and the bottom end of the support connecting rod 15 is fixedly connected to the bottom plate 14;

[0036] Specifically, Figure 1 and Figure 4 As shown, a bottom plate 14 is connected to the bottom of the device via a supporting connecting rod 15. The bottom plate 14 can support the entire device at the top via the supporting connecting rod 15 to improve the stability of the device during operation.

[0037] Working principle: When the utility model is in use, before working, the fixed shaft 23 can be driven to move by the crank handle 4, and the fixed shaft 23 can drive the hand-cranked wheel 2 to rotate. While the hand-cranked wheel 2 rotates, the speed change gear 21 inside the gear box 1 is driven to move through the rotating shaft 3, and the internal adjustment structure is driven to move through the speed change gear 21 to adjust the operating speed of the device. The anti-slip sleeve 24 outside the crank handle 4 can effectively improve the anti-slip performance to facilitate adjustment. During operation, the transmission screw spindle 22 drives the screw lifting seat 12 inside the fixed sleeve 11 to move, which will also drive the external connecting plate 16 to move. The arc-shaped limiting plate 25 outside the connecting plate 16 fits on the outside of the supporting connecting rod 15, which can effectively limit the screw lifting seat 12 through the connecting plate 16, thereby improving the stability of the screw lifting seat 12 during movement. The bottom of the device is connected to a bottom plate 14 through a supporting connecting rod 15, and the bottom plate 14 can support the entire device on the top through the supporting connecting rod 15, thereby improving the stability of the device during operation.

Claims

1. A linear electric actuator, comprising a gear box (1), characterized in that: The top of the gear box (1) is fixedly connected to an electric control housing (8), the bottom of one end of the electric control housing (8) is fixedly connected to a switch (5), the top of one end of the electric control housing (8) is fixedly connected to a display window (7), one end of the electric control housing (8) is movably connected to an operation button (6), one side of the gear box (1) is fixedly connected to a junction box (9), and the other side of the gear box (1) is provided with an adjustment structure for adjusting the operating speed; The adjustment structure comprises a hand-cranked wheel (2) and a rotating shaft (3); one side of the gear box (1) is movably connected to the rotating shaft (3); one side of the rotating shaft (3) is fixedly connected to the hand-cranked wheel (2); the top of one side of the hand-cranked wheel (2) is fixedly connected to a fixed shaft (23); the outside of the fixed shaft (23) is movably connected to a crank handle (4); the outside of the fixed shaft (23) is fixedly connected to an anti-slip sleeve (24); the bottom of the gear box (1) is movably connected to a speed change gear (21); the inside of the speed change gear (21) is movably connected to a transmission screw main shaft (22); the inside of the electric control housing (8) is fixedly connected to a DC brushless motor (18); the bottom of the DC brushless motor (18) is movably connected to a multi-turn encoder (19); one side of the DC brushless motor (18) is fixedly connected to a control module (17); the outside of the transmission screw main shaft (22) is movably connected to a transmission gear (20).

2. A linear electric actuator according to claim 1, characterized in that: The center line of the fixed shaft (23) and the center line of the crank handle (4) are on the same vertical plane, and the center line of the hand-cranked wheel (2) and the center line of the rotating shaft (3) are on the same horizontal plane.

3. A linear electric actuator according to claim 1, characterized in that: The rotating shaft (3) passes through one side of the gear box (1) and extends into the interior of the gear box (1); the output end of the DC brushless motor (18) is fixedly connected to the transmission screw main shaft (22).

4. A linear electric actuator according to claim 1, characterized in that: The transmission screw main shaft (22) passes through the bottom end of the gear box (1) and extends to the outside of the gear box (1), and the center line of the transmission screw main shaft (22) and the center line of the speed change gear (21) are on the same vertical plane.

5. A linear electric actuator according to claim 1, characterized in that: The bottom end of the gear box (1) is fixedly connected to a screw rod connection seat (10), the bottom end of the screw rod connection seat (10) is fixedly connected to a fixed sleeve (11), the interior of the fixed sleeve (11) is movably connected to a screw rod lifting seat (12), the bottom end of the outside of the screw rod lifting seat (12) is fixedly connected to a connecting plate (16), the bottom end of the screw rod lifting seat (12) is movably connected to a threaded connection seat (13), the two sides of the bottom of the screw rod connection seat (10) are fixedly connected to support connecting rods (15), the bottom end of the support connecting rod (15) is fixedly connected to a bottom plate (14), and a group of arc-shaped limit plates (25) are fixedly connected to the four corners of the connecting plate (16).

6. A linear electric actuator according to claim 5, characterized in that: The arc-shaped limit plate (25) is slidably connected to the supporting connecting rod (15), the screw rod lifting seat (12) is threadedly connected to the transmission screw rod main shaft (22), and the center line of the screw rod lifting seat (12) and the center line of the connecting plate (16) are on the same vertical plane.

7. A linear electric actuator according to claim 5, characterized in that: The supporting connecting rods (15) at the bottom end of the screw rod connecting seat (10) are arranged symmetrically, and the fixing sleeve (11) is connected to the interior of the screw rod connecting seat (10).

8. A linear electric actuator according to claim 5, characterized in that: The center line of the screw rod lifting seat (12) and the center line of the fixed sleeve (11) are on the same vertical plane, and the arc-shaped limiting plates (25) outside the connecting plate (16) are arranged symmetrically.

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