Electric shifting machine

Abstract

The invention discloses an electric shifting machine. The electric shifting machine aims at solving the problems that in the prior art, a backrest piece of a shifting machine is not firm enough when closed, and the backrest piece is easy to open when the backrest piece is used as a backrest for an old person or a patient. Comprising a movable base; the number of the fixed supports is two, and the two fixed supports are fixedly connected to the two sides of the top of the movable base correspondingly; an adjusting assembly used for adjusting the height of the lifting support is installed on the fixed support; the seat assembly comprises two frames, the two frames are rotationally connected to the two sides of the lifting support respectively, and a seat plate is fixedly connected to the bottoms of the ends, away from the lifting support, of the two frames. Through cooperation of the first lock catch assembly and the second lock catch assembly, double fixation of the seat assembly is achieved, so that the seat assembly is fixed more firmly, and the seat assembly can be prevented from being opened.

Description

Technical Field

[0001] The invention belongs to the technical field of transfer machines, and in particular relates to an electric transfer machine. Background Art

[0002] The transfer machine is used to assist caregivers in transferring the user's position. The transfer machine can enable the elderly or people with leg injuries to transfer safely between ordinary seats, sofas, wheelchairs, and toilets, improve the initiative of the elderly or patients with inconvenient legs and feet in daily activities, and make nursing work easier and safer, greatly reducing the workload of caregivers, making the whole process easy and pleasant. The transfer machine in the prior art has a backrest that is not firm enough when closed, and the backrest is easy to open when the elderly or patients lean back, causing the elderly or patients to easily fall down when leaning back. Summary of the invention

[0003] (1) Technical issues to be solved

[0004] In view of the deficiencies of the prior art, an object of the present invention is to provide an electric transfer machine, which aims to solve the problem that the backrest of the transfer machine in the prior art is not firm enough when closed, and the backrest is easy to open when the elderly or patients lean back.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the present invention provides an electric transfer machine, which includes:

[0007] Mobile base;

[0008] A fixed bracket, wherein two fixed brackets are provided, and the two fixed brackets are respectively fixedly connected to two sides of the top of the mobile base;

[0009] A liftable bracket, wherein the fixed bracket is provided with an adjustment component for adjusting the height of the liftable bracket;

[0010] A seat assembly, the seat assembly comprising two frames, the two frames are rotatably connected to the two sides of the liftable bracket respectively, the bottom of the two frames away from the liftable bracket is fixedly connected with a seat plate, the two seat plates are rotated close to form a seat for supporting the user's buttocks, and the top of the two frames away from the liftable bracket is equipped with a backrest;

[0011] A first locking assembly, through which the upper ends of the two frames are fixed when they are rotated and closed;

[0012] A second locking assembly is used to fix the middle parts of the two frames when they are rotated and closed.

[0013] Preferably, the adjustment assembly includes an electric push rod, a left articulated bracket, a right articulated bracket and a connecting rod. Two of the left articulated bracket and two of the right articulated bracket are provided. One end of the electric push rod is hinged to the fixed bracket, and the other side of the electric push rod is hinged to the left articulated bracket located above. The two ends of the two left articulated brackets are respectively hinged to the fixed bracket and the liftable bracket, and the two ends of the two right articulated brackets are respectively hinged to the fixed bracket and the liftable bracket, and the two ends of the connecting rod are respectively fixedly connected to the left articulated bracket and the right articulated bracket located above.

[0014] Furthermore, a controller is fixedly mounted on the fixed bracket, and the electric push rod is electrically connected to the controller via a power line.

[0015] Furthermore, the first locking assembly includes two fixing belts, both ends of which are fixedly connected to two frames respectively, a male buckle is fixedly installed on the movable end of one of the fixing belts, and a female buckle matched with the male buckle is fixedly installed on the movable end of the other fixing belt, and threaded holes are provided at the top and bottom of one end of the male buckle extending to the inside of the female buckle, and the top and bottom of the female buckle are threadedly connected with threaded rods matching with the threaded holes.

[0016] Furthermore, a rubber block is fixedly mounted on one of the frames and located between the first locking assembly and the second locking assembly, and an arc-shaped groove is formed on the rubber block.

[0017] Furthermore, the second locking assembly includes a limit pin, which is fixedly connected to one of the frames. The second locking assembly also includes a U-shaped plate, a rotating shaft is fixedly connected to the U-shaped plate, a barb is rotatably connected to the rotating shaft, an upper fixed rod is fixedly connected to the side of the barb close to the U-shaped plate, a gap is left between the upper fixed rod and the U-shaped plate, a lower fixed rod is fixedly connected to the U-shaped plate, and a torsion spring is sleeved on the rotating shaft.

[0018] Furthermore, the two pins of the torsion spring are respectively installed on the upper fixing rod and the lower fixing rod. After the two frames are rotated and closed, the U-shaped plate is inserted into the two frames and then clamped on the limit pin by the barb to fix the two frames. An extension plate is fixedly connected to the barb.

[0019] Furthermore, a support assembly for supporting the feet is installed on one side of the movable base away from the seat assembly, and the support assembly includes a support plate, a movable sleeve is fixedly installed on the bottom of the support plate, a fixed sleeve is slidably connected inside the movable sleeve, an end of the fixed sleeve away from the support plate is fixedly connected to a mounting bracket, the mounting bracket is fixedly connected to the movable base, the movable sleeve is provided with a plurality of limiting holes, and a limiting column matching the limiting holes is installed on the fixed sleeve.

[0020] Furthermore, a spring cavity is provided inside the fixed sleeve, a spring is arranged inside the spring cavity, one end of the spring is fixedly connected to the inner top wall of the fixed sleeve, the other end of the spring is fixedly connected to one end of the limiting column, and the fixed sleeve is provided with a through hole for the limiting column to pass through.

[0021] Furthermore, an L-shaped plate is fixedly connected to a side of the backrest away from the liftable bracket, a rotating rod is fixedly connected to the middle position of the bottom of one end of the L-shaped plate away from the backrest, an arc groove for rotating the rotating rod in the front and rear directions is opened on the frame, one end of the rotating rod away from the backrest is fixedly connected to a damping shaft, the damping shaft is rotatably connected to the frame, and a handle is fixedly connected to the backrest.

[0022] (3) Beneficial effects

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention realizes double fixation of the seat assembly through the cooperation of the first locking assembly and the second locking assembly, so that the seat assembly is fixed more firmly, thereby preventing the seat assembly from opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0026] Figure 2 It is a three-dimensional schematic diagram of the adjustment component of the present invention.

[0027] Figure 3 Schematic diagram of the seat assembly of the present invention.

[0028] Figure 4 It is a schematic cross-sectional view of a male buckle of the present invention.

[0029] Figure 5 It is a three-dimensional schematic diagram of the barb of the present invention.

[0030] Figure 6 It is a three-dimensional schematic diagram of the limiting pin of the present invention.

[0031] Figure 7 It is a bottom view schematic diagram of the support plate of the present invention.

[0032] Figure 8 It is a cross-sectional schematic diagram of the fixed sleeve of the present invention.

[0033] Fig. 9 It is a side view schematic diagram of the L-shaped plate of the present invention.

[0034] The markings in the accompanying drawings are:

[0035] 1. Mobile base; 2. Fixed bracket; 3. Liftable bracket; 4. Adjustment assembly; 5. Seat assembly; 6. First locking assembly; 7. Second locking assembly; 8. Support assembly; 9. Controller; 10. Rubber block; 41. Electric push rod; 42. Left hinged bracket; 43. Right hinged bracket; 44. Connecting rod; 51. Frame; 52. Seat plate; 53. Backrest; 61. Fixing belt; 62. Male buckle; 63. Female buckle; 64. Threaded rod; 71. Limiting pin; 72. U-shaped plate; 73. Rotating shaft; 74. Barb; 75. Upper fixing rod; 76. Lower fixing rod; 77. Torsion spring; 78. Extension plate; 81. Support plate; 82. Movable sleeve; 83. Fixed sleeve; 84. Mounting bracket; 85. Limiting column; 86. Spring; 531. L-shaped plate; 532. Rotating rod; 533. Handle. DETAILED DESCRIPTION

[0036] This specific embodiment is an electric transfer machine, and its structural schematic diagram is as follows Figure 1-Figure 9 As shown, the electric transfer machine includes:

[0037] A mobile base 1, wherein two self-locking universal wheels are installed at the bottom of the mobile base 1;

[0038] A fixed bracket 2, two fixed brackets 2 are provided, and the two fixed brackets 2 are respectively fixedly connected to the top two sides of the mobile base 1, and two self-locking universal wheels are installed at the bottom of the fixed bracket 2. The electric shifting machine can be moved by the universal wheels at the bottom of the mobile base 1 and the fixed bracket 2, and when the electric shifting machine moves to a suitable position, the wheel brakes on the self-locking universal wheels can be used to lock the wheels, thereby fixing the electric shifting machine;

[0039] The liftable bracket 3 is provided with an adjustment component 4 for adjusting the height of the liftable bracket 3;

[0040] The seat assembly 5 includes two frames 51, which are rotatably connected to the two sides of the liftable bracket 3, and the bottom of the two frames 51 away from the liftable bracket 3 is fixedly connected with a seat plate 52. The two seat plates 52 rotate close to form a seat for supporting the user's buttocks. The top of the two frames 51 away from the liftable bracket 3 is equipped with a backrest 53. The height of the liftable bracket 3 is adjusted by the adjustment component 4. Since the seat assembly 5 is installed on the liftable bracket 3, the height of the seat assembly 5 can be adjusted under the action of the adjustment component 4. When the two frames 51 are rotated and opened, the user can enter or move out.

[0041] A first locking assembly 6, through which the upper ends of the two frames 51 are fixed when they are rotated and closed;

[0042] The second locking component 7 is used to fix the middle parts of the two frames 51 when they are rotated and closed. The cooperation of the first locking component 6 and the second locking component 7 realizes the double fixation of the seat component 5, so that the seat component 5 is fixed more securely, thereby preventing the seat component 5 from opening.

[0043] like Figure 1 and Figure 2 As shown, the adjustment assembly 4 includes an electric push rod 41, a left articulated bracket 42, a right articulated bracket 43 and a connecting rod 44. Two left articulated brackets 42 and two right articulated brackets 43 are provided. One end of the electric push rod 41 is hinged to the fixed bracket 2, and the other side of the electric push rod 41 is hinged to the left articulated bracket 42 located above. The two ends of the two left articulated brackets 42 are respectively hinged to the fixed bracket 2 and the liftable bracket 3, and the two ends of the two right articulated brackets 43 are respectively hinged to the fixed bracket 2 and the liftable bracket 3, and the two ends of the connecting rod 44 are respectively fixedly connected to the left articulated bracket 42 and the right articulated bracket 43 located above.

[0044] The fixed bracket 2 is fixedly mounted with a controller 9, and the electric push rod 41 is electrically connected to the controller 9 through a power line. The controller 9 is provided with two buttons, an up button and a down button. When adjusting the height of the liftable bracket 3 and the seat assembly 5, the buttons on the controller 9 can be pressed. Specifically:

[0045] When the height of the seat assembly 5 needs to be adjusted, the rising button is pressed, and the telescopic end of the electric push rod 41 extends, and the telescopic end of the electric push rod 41 drives the left articulated bracket 42 located above to rise, and the left articulated bracket 42 drives the right articulated bracket 43 located above to rise synchronously through the connecting rod 44, and the lifting bracket 3 is driven to move upward under the joint action of the left articulated bracket 42 and the right articulated bracket 43, and the lifting bracket 3 drives the frame 51 to move upward when moving upward, and the frame 51 can drive the seat plate 52 to move upward during the upward movement, and the height of the seat assembly 5 is adjusted.

[0046] When the height of the seat assembly 5 needs to be lowered, the descending button is pressed, the telescopic end of the electric push rod 41 is retracted, and the telescopic end of the electric push rod 41 drives the left articulated bracket 42 located above to descend, and the left articulated bracket 42 drives the right articulated bracket 43 located above to descend synchronously through the connecting rod 44, and the liftable bracket 3 is driven to move downward under the joint action of the left articulated bracket 42 and the right articulated bracket 43, and the liftable bracket 3 drives the frame 51 to move downward when moving downward, and the frame 51 can drive the seat plate 52 to move downward during the downward movement, and the height of the seat assembly 5 is adjusted.

[0047] Two left articulated brackets 42 distributed from top to bottom and two right articulated brackets 43 distributed from top to bottom form a four-link parallel structure, which is driven to rise and fall by an electric push rod 41, which is smooth and reliable. The rising height is completed by pressing the rising button switch by hand, and the descending adjustment is completed by pressing the descending button switch by hand. The whole process is electric height adjustment.

[0048] like Figure 1 , Figure 3 and Figure 4 As shown, the first locking assembly 6 includes two fixing belts 61, and the two ends of the two fixing belts 61 are fixedly connected to the two frames 51 respectively, a male buckle 62 is fixedly installed on the movable end of one fixing belt 61, and a female buckle 63 matched with the male buckle 62 is fixedly installed on the movable end of the other fixing belt 61, and the male buckle 62 extends to the top and bottom of one end of the female buckle 63, and threaded holes are opened, and the top and bottom of the female buckle 63 are threadedly connected with a threaded rod 64 matched with the threaded hole;

[0049] After the two frames 51 are rotated and closed, the user holds the male buckle 62 and the female buckle 63 with both hands respectively, and then inserts the raised part of the male buckle 62 into the recessed part of the female buckle 63 so that the threaded hole on the male buckle 62 corresponds to the position of the threaded rod 64 on the female buckle 63, and then screws the threaded rod 64 into the threaded hole to fix the male buckle 62 and the female buckle 63. In this way, with the cooperation of the two fixing belts 61 and the male buckle 62 and the female buckle 63, the two rotated and closed backrests 53 can be limited to prevent the two backrests 53 from opening.

[0050] like Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the second locking assembly 7 includes a limiting pin 71, which is fixedly connected to one of the frames 51, and the second locking assembly 7 also includes a U-shaped plate 72, a rotating shaft 73 is fixedly connected to the U-shaped plate 72, a barb 74 is rotatably connected to the rotating shaft 73, an upper fixing rod 75 is fixedly connected to the side of the barb 74 close to the U-shaped plate 72, a gap is left between the upper fixing rod 75 and the U-shaped plate 72, a lower fixing rod 76 is fixedly connected to the U-shaped plate 72, and a torsion spring 77 is sleeved on the rotating shaft 73;

[0051] The two pins of the torsion spring 77 are respectively installed on the upper fixing rod 75 and the lower fixing rod 76. After the two frames 51 are rotated and closed, the U-shaped plate 72 is inserted into the two frames 51 and then the two frames 51 are fixed by the barb 74 on the limit pin 71. The barb 74 is fixedly connected with an extension plate 78. The setting of the extension plate 78 can facilitate the user to operate the barb 74.

[0052] After the two frames 51 are rotated and closed, the limiting groove of the U-shaped plate 72 is first aligned with the limiting pin 71, and then the barb 74 is rotated upward through the extension plate 78. The barb 74 can compress the torsion spring 77 during the rotation process, and then the U-shaped plate 72 is inserted into the middle of the two frames 51, and the limiting pin 71 is located in the limiting groove of the U-shaped plate 72. Then the extension plate 78 is slowly loosened, and the barb 74 can be rotated downward under the action of the restoring force of the torsion spring 77 until the barb 74 is stuck on the limiting pin 71 through the provided slot. At this time, the two frames 51 that are rotated and closed can be limited by the cooperation of the limiting pin 71, the barb 74 and the U-shaped plate 72 to prevent the two frames 51 from opening;

[0053] After opening the two frames 51, in order to prevent the second locking assembly 7 from being lost, rotate the hook 74 to open it, then insert the U-shaped plate 72 into one of the frames 51, and then release the hook 74. Under the action of the torsion spring 77, the hook 74 can be stuck on the limit pin 71, so that the second locking assembly 7 is hung on one of the frames 51 at an angle.

[0054] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, a support assembly 8 for supporting the feet is installed on one side of the mobile base 1 away from the seat assembly 5, and the support assembly 8 includes a support plate 81, a movable sleeve 82 is fixedly installed at the bottom of the support plate 81, a fixed sleeve 83 is slidably connected inside the movable sleeve 82, and a mounting bracket 84 is fixedly connected to one end of the fixed sleeve 83 away from the support plate 81, and the mounting bracket 84 is fixedly connected to the mobile base 1, a plurality of limiting holes are opened in the movable sleeve 82, and a limiting column 85 matching the limiting holes is installed on the fixed sleeve 83;

[0055] A spring cavity is provided inside the fixed sleeve 83, and a spring 86 is provided inside the spring cavity. One end of the spring 86 is fixedly connected to the inner top wall of the fixed sleeve 83, and the other end of the spring 86 is fixedly connected to one end of the limiting column 85. The limiting column 85 includes an upper cylinder and a lower cylinder. The upper cylinder contacts the inner wall of the spring cavity, and the upper cylinder can slide inside the spring cavity. The upper cylinder is fixedly connected to the spring 86. The fixed sleeve 83 is provided with a through hole for the limiting column 85 to pass through. The diameter of the through hole is smaller than the diameter of the upper cylinder, so that the limiting column 85 can be prevented from detaching from the fixed sleeve 83.

[0056] The limiting column 85 is pressed to make the limiting column 85 enter the interior of the spring cavity. The limiting column 85 can squeeze the spring 86 in the process of entering the spring cavity. When the limiting column 85 is moved out of the limiting hole provided in the movable sleeve 82, the fixation of the movable sleeve 82 can be released. When the support plate 81 is pulled to drive the movable sleeve 82 to move to a suitable distance, the limiting hole provided in the movable sleeve 82 corresponds to the position of the limiting column 85. At this time, the limiting column 85 is no longer pressed, and the spring 86 is no longer compressed. Under the resetting action of the spring 86, the limiting column 85 can be pushed into the interior of the limiting hole. At this time, the fixing of the movable sleeve 82 can be achieved under the cooperation of the limiting column 85 and the limiting hole, so that the support plate 81 is also fixed;

[0057] When people of different heights use the electric lift, their legs and feet are in different positions on the support plate 81 after they sit on the seat plate 52. Thus, by sliding the movable sleeve 82 on the fixed sleeve 83, the position of the support plate 81 can be changed. Therefore, the electric lift can be suitable for people of different heights and is comfortable to use.

[0058] like Figure 1 , Figure 3 and Fig. 9 As shown, an L-shaped plate 531 is fixedly connected to one side of the backrest 53 away from the liftable bracket 3, a rotating rod 532 is fixedly connected to the middle position of the bottom of one end of the L-shaped plate 531 away from the backrest 53, an arc groove for the rotating rod 532 to rotate in the front-back direction is opened on the frame 51, and one end of the rotating rod 532 away from the backrest 53 is fixedly connected to a damping shaft, and the damping shaft is rotatably connected to the frame 51;

[0059] First, the user is located between the two frames 51. After the two frames 51 are rotated and closed, the two seat plates 52 form a seat for supporting the user's buttocks. The first locking assembly 6 and the second locking assembly 7 cooperate to fix the seat assembly 5. The user sits on the seat plate 52, and the user's back fits against the two backrests 53. When the user wants to adjust the sitting posture and tilt his back backward, the user's back can drive the backrest 53 to tilt backward, and the backrest 53 drives the rotating rod 532 to rotate inside the arc groove, so that the angle of the backrest 53 can be adjusted. Compared with the traditional backrest 53 set in the vertical direction, this can make the patient's back in a more comfortable posture;

[0060] A handle 533 is fixedly connected to the backrest 53 . The handle 533 can be used to enable the user's caregiver to push the electric lift to move, and can also facilitate opening and closing of the frame 51 .

[0061] like Figure 3 and Figure 5As shown, a rubber block 10 is fixedly installed on one of the frames 51 and is located between the first locking component 6 and the second locking component 7. An arc-shaped groove is provided on the rubber block 10. When the two frames 51 are rotated and closed, the other frame 51 squeezes the edge of the rubber block 10 and enters the arc-shaped groove provided in the rubber block 10. A gap is left between the other frame 51 and the inner wall of the groove of the rubber block 10, so that the two frames 51 are convenient to open.

[0062] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. An electric lift, characterized in that: The electric transfer lift includes: Mobile base (1); A fixed bracket (2), wherein two fixed brackets (2) are provided, and the two fixed brackets (2) are respectively fixedly connected to two sides of the top of the mobile base (1); A liftable bracket (3), wherein an adjustment component (4) for adjusting the height of the liftable bracket (3) is installed on the fixed bracket (2); A seat assembly (5), the seat assembly (5) comprising two frames (51), the two frames (51) being rotatably connected to two sides of a liftable bracket (3), the bottom of one end of the two frames (51) away from the liftable bracket (3) being fixedly connected to a seat plate (52), the two seat plates (52) being rotated close to form a seat for supporting the buttocks of a user, and the top of one end of the two frames (51) away from the liftable bracket (3) being installed with a backrest (53); A first locking assembly (6), through which the upper ends of the two frames (51) are fixed when they are rotated and closed; A second locking assembly (7) is used to fix the middle parts of the two frames (51) when they are rotated and closed.

2. The electric lift according to claim 1, characterized in that: The adjustment assembly (4) comprises an electric push rod (41), a left articulated bracket (42), a right articulated bracket (43) and a connecting rod (44). The left articulated bracket (42) and the right articulated bracket (43) are both provided with two. One end of the electric push rod (41) is hinged on the fixed bracket (2), and the other side of the electric push rod (41) is hinged on the left articulated bracket (42) located above. The two ends of the two left articulated brackets (42) are respectively hinged on the fixed bracket (2) and the liftable bracket (3). The two ends of the two right articulated brackets (43) are respectively hinged on the fixed bracket (2) and the liftable bracket (3). The two ends of the connecting rod (44) are respectively fixedly connected to the left articulated bracket (42) and the right articulated bracket (43) located above.

3. The electric lift according to claim 2, characterized in that: A controller (9) is fixedly mounted on the fixed bracket (2), and the electric push rod (41) is electrically connected to the controller (9) via a power line.

4. The electric lift according to claim 1, characterized in that: The first locking component (6) comprises two fixing belts (61), the two ends of the two fixing belts (61) are respectively fixedly connected to the two frames (51), the movable end of one of the fixing belts (61) is fixedly installed with a male buckle (62), and the movable end of the other fixing belt (61) is fixedly installed with a female buckle (63) matched with the male buckle (62), and the top and bottom of one end of the male buckle (62) extending to the inside of the female buckle (63) are both provided with threaded holes, and the top and bottom of the female buckle (63) are both threadedly connected with a threaded rod (64) matched with the threaded hole.

5. The electric lift according to claim 1, characterized in that: A rubber block (10) is fixedly mounted on one of the frames (51) and located between the first locking assembly (6) and the second locking assembly (7), and an arc-shaped groove is formed on the rubber block (10).

6. The electric lift according to claim 1, characterized in that: The second locking assembly (7) comprises a limit pin (71), wherein the limit pin (71) is fixedly connected to one of the frames (51); the second locking assembly (7) further comprises a U-shaped plate (72), wherein a rotating shaft (73) is fixedly connected to the U-shaped plate (72), wherein a barb (74) is rotatably connected to the rotating shaft (73), wherein an upper fixing rod (75) is fixedly connected to the side of the barb (74) close to the U-shaped plate (72), wherein a gap is left between the upper fixing rod (75) and the U-shaped plate (72), wherein a lower fixing rod (76) is fixedly connected to the U-shaped plate (72), and a torsion spring (77) is sleeved on the rotating shaft (73).

7. The electric lift according to claim 6, characterized in that: The two pins of the torsion spring (77) are respectively mounted on the upper fixing rod (75) and the lower fixing rod (76). After the two frames (51) are rotated and closed, the U-shaped plate (72) is inserted into the two frames (51) and then clamped on the limiting pin (71) through the barb (74) to achieve the fixation of the two frames (51). The barb (74) is fixedly connected with an extension plate (78).

8. The electric lift according to claim 1, characterized in that: A support assembly (8) for supporting a foot is installed on a side of the movable base (1) away from the seat assembly (5), and the support assembly (8) includes a support plate (81), a movable sleeve (82) is fixedly installed on the bottom of the support plate (81), a fixed sleeve (83) is slidably connected inside the movable sleeve (82), an end of the fixed sleeve (83) away from the support plate (81) is fixedly connected to a mounting bracket (84), and the mounting bracket (84) is fixedly connected to the movable base (1), the movable sleeve (82) is provided with a plurality of limiting holes, and a limiting column (85) matching the limiting holes is installed on the fixed sleeve (83).

9. The electric lift according to claim 8, characterized in that: A spring cavity is provided inside the fixed sleeve (83), a spring (86) is arranged inside the spring cavity, one end of the spring (86) is fixedly connected to the inner top wall of the fixed sleeve (83), the other end of the spring (86) is fixedly connected to one end of the limiting column (85), and the fixed sleeve (83) is provided with a through hole for the limiting column (85) to pass through.

10. The electric lift according to claim 1, characterized in that: An L-shaped plate (531) is fixedly connected to a side of the backrest (53) away from the liftable bracket (3); a rotating rod (532) is fixedly connected to the middle position of the bottom of one end of the L-shaped plate (531) away from the backrest (53); an arc groove for rotating the rotating rod (532) in the front-rear direction is provided on the frame (51); one end of the rotating rod (532) away from the backrest (53) is fixedly connected to a damping rotating shaft; the damping rotating shaft is rotatably connected to the frame (51); and a handle (533) is fixedly connected to the backrest (53).

Images