An automatic lifting device suitable for a swimming pool

Abstract

The application discloses an automatic lifting device suitable for a swimming pool, which comprises two lifting columns and a shielding cover, and the top ends of the two lifting columns are rotationally connected with the shielding cover. A motor box is arranged on one side of the lifting column, a driving motor is arranged in the motor box, a transmission box is arranged between the motor box and the lifting column, a chain wheel and chain are arranged in the transmission box, the output end of the driving motor is connected with one end of the chain wheel and chain, the other end of the chain wheel and chain is connected with one end of a transmission shaft, and the other end of the transmission shaft extends into the lifting column. A massage device is further arranged, so that the massage block and the knocking column form a composite motion. The massage block first moves to the right to massage the back, then the knocking column is pressed downward to hit the acupoints of the back, after that, the knocking column is first lifted upward, the massage block moves to the left again to massage the hit part again, and the process is continuously circulated to alternately massage the back of the human body, so that the swimmer can be fully relaxed and rapidly recover the physical strength after swimming.

Description

Technical Field

[0001] This invention belongs to the field of swimming pool technology, and specifically relates to an automatic lifting device suitable for swimming pools. Background Technology

[0002] A swimming pool is a dedicated space for people to engage in swimming activities or competitions. Most swimming pools are built on land and can be categorized into regular swimming pools and heated swimming pools based on water temperature. They can also be indoors or outdoors. With technological advancements, home swimming pools have also experienced rapid growth.

[0003] Patent CN202596210U discloses a home swimming pool cover, including a frame, a transparent body, safety protection components, and a lifting device. The frame is constructed by fixing profiles into a regular shape using connectors or welding. The transparent body is laid on the upper surface of the frame. The safety protection components are installed in grooves on the sides of the frame and have lifting points. The lifting device consists of a motor and a transmission mechanism, which drives the lifting points on the pool cover to achieve smooth lifting and lowering of the cover. The advantages of this invention are: 1) It improves the utilization rate of the swimming pool, allowing it to be used like a regular surface after the cover is added; 2) It allows for the raising of fish and plants in the pool, with the fully transparent cover providing a scenic view and enhancing the quality of life; 3) It has a simple structure and is easy to install and disassemble; 4) It has a long service life.

[0004] However, the above-mentioned patent has the following shortcomings in actual use: the pool cover needs to be put on the pool manually, which is time-consuming, labor-intensive and inefficient. Summary of the Invention

[0005] Therefore, the present invention aims to solve the problem that in the prior art, pool covers need to be manually installed on the pool, which is time-consuming, labor-intensive, and inefficient.

[0006] Therefore, the technical solution adopted is an automatic lifting device for swimming pools according to the present invention, comprising: two lifting columns and a cover, wherein the tops of the two lifting columns are rotatably connected to the cover.

[0007] Preferably, a motor box is provided on one side of the lifting column, a drive motor is provided inside the motor box, a transmission box is provided between the motor box and the lifting column, a sprocket and chain are provided inside the transmission box, the output end of the drive motor is connected to one end of the sprocket and chain, the other end of the sprocket and chain is connected to one end of the transmission shaft, and the other end of the transmission shaft extends into the lifting column.

[0008] Preferably, the lifting column consists of an outer shell, a lifting structure, and a rotating structure. The lifting column is a rectangular column, and the outer shell is composed of a telescopic structure made of three C-shaped channel steels.

[0009] Preferably, the lifting structure includes: a lifting base, an input shaft, a chain, a sprocket, a pneumatic spring, a guide wheel, a small guide wheel, a movable rod, a movable bracket, a movable small rod, a single chain, a chain buckle, and a chain lock plate. The chain inside the lifting column rotates vertically, forming a relative displacement and releasing and compressing the pneumatic spring to complete the lifting. The drive chain inside the lifting column has a U-shaped path, with the lower left and upper right sides of the chain path divided into a fixed side and a movable side.

[0010] Preferably, the fixed side is a lifting base, and the movable side has upper and lower layers. The lower layer consists of the movable rod, guide wheel, pneumatic spring 1, and small guide wheel, while the upper layer consists of the movable rod, chain lock plate, single chain, and chain buckle. The pneumatic spring 1 connects the lifting base and the lower layer of the movable side. The pneumatic spring cylinder connects the movable rod to the movable bracket at the end of the movable rod. The single chain connects the lifting base and the upper layer of the movable side. The two ends of the single chain are connected to the lifting base and the chain lock plate respectively by chain buckles. The chain lock plate is fixed at one point on the chain and is also connected to the movable rod.

[0011] Preferably, the rotating structure includes: a cover mounting plate, a rotating shaft, movable rod one, movable rod two, movable rod three, movable rod four, movable rod five, movable rod six, pneumatic spring two, a pneumatic spring connecting frame, pneumatic spring three, and a rotating top shell. The rotating top shell is assembled from U-shaped grooves into a C-shape, with a long side, a short side, and a middle section. The middle section is the top of the rotating top shell. Each of the long and short sides has a hole as a hinge point for the movable connecting rod. The short side hole is the center of rotation of the cover and also the starting point of the movable connecting rod. The long side hole is the middle connection point of the movable connecting rod. A fan-shaped cut is opened above the middle connection point to limit the rotation of the cover. The rotating shaft is rotatably connected to the short side hole of the rotating top shell. One end of the rotating shaft is connected to one end of the cover mounting plate, and the other end of the cover mounting plate is connected to the cover. The other end of the rotating shaft is connected to one end of the movable rod one, and the other end of the movable rod one is connected to one end of the movable rod two. The movable rod three is arc-shaped. The middle of the movable rod two is hinged to the upper end of the movable rod three, and the lower end of the movable rod three is hinged to the movable rod four. One end of the movable rod four is hinged to the fixing hole on the long side of the rotating top shell. The other end of the movable rod four is hinged to one end of the movable rod five, and the other end of the movable rod five is hinged to one end of the movable rod six. The other end of the movable rod six is ​​connected to the gas spring connecting frame. The upper end of the gas spring connecting frame is connected to the pneumatic spring two, and the lower end of the gas spring connecting frame is connected to the pneumatic spring three.

[0012] Preferably, the device includes a massage mechanism comprising: a power box, a swing motor, a first swing arm, a fixed column, and a second swing arm. The power box is located at the bottom of the cover. The swing motor is mounted on the inner wall of the power box. The output shaft of the swing motor is perpendicularly connected to one end of the first swing arm. The fixed column is located on the inner wall of the power box. The output shaft of the swing motor and the fixed column are on the same horizontal plane. One end of the second swing arm is hinged to the fixed column. The first and second swing arms are parallel and of the same length. The other end of the first swing arm is hinged to one end of a horizontal rod. The other end of the horizontal rod is connected to one end of a vertical rod. The other end of the vertical rod extends through a sliding tube to the bottom of the power box and connects to the top of the flat plate. The vertical rod is slidably connected to the sliding tube. Several striking posts are located at the bottom of the flat plate.

[0013] Preferably, one end of the first rocker arm is hinged to the first swing arm, the other end of the first rocker arm is hinged to one end of the connecting arm, one end of the second rocker arm is hinged to the second swing arm, the first rocker arm and the second swing arm are parallel and of the same length, the outer wall of the second swing arm is connected to one end of the rotating column, the other end of the rotating column is rotatably connected to the outer wall of the slide tube, the other end of the second rocker arm is hinged to the connecting arm, the other end of the connecting arm is connected to the massage disc, and a plurality of massage blocks are provided at the bottom of the massage disc.

[0014] Preferably, the massage block is hemispherical.

[0015] Preferably, an inspection port is provided on the side wall of the power box, and a cover plate is provided on the inspection port. The cover plate is connected to the side wall of the power box by screws.

[0016] The technical solution of this invention has the following advantages:

[0017] 1. An automatic lifting device for swimming pools according to the present invention includes: two lifting columns and a shielding cover, the top ends of the two lifting columns being rotatably connected to the shielding cover. A motor box is provided on one side of the lifting column, a drive motor is provided inside the motor box, a transmission box is provided between the motor box and the lifting column, a sprocket and chain are provided inside the transmission box, the output end of the drive motor is connected to one end of the sprocket and chain, the other end of the sprocket and chain is connected to one end of a transmission shaft, and the other end of the transmission shaft extends into the lifting column. The lifting and rotation of the shielding cover can be achieved by the drive motor, and the reverse rotation of the shielding cover and its lowering can be achieved by rotating the motor in the opposite direction. No additional drive source and control unit are required, which improves efficiency and reduces costs.

[0018] 2. The massage device of the present invention makes the massage block and the tapping column form a compound movement. The massage block first moves to the right to massage the back, and then the tapping column presses down to strike the acupoints on the back. After that, the tapping column first lifts up, and the massage block moves to the left again to massage the struck area. This cycle is repeated continuously, alternating to massage the back of the human body, so that swimmers can fully relax and quickly recover their strength after swimming.

[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a usage state diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the lifting column in this invention;

[0025] Figure 4 This is a schematic diagram of the lifting structure in this invention;

[0026] Figure 5 This is an initial state diagram of the lifting structure in this invention;

[0027] Figure 6 This is a diagram showing the fully raised state of the lifting structure in this invention;

[0028] Figure 7 This is a schematic diagram of the rotating structure in this invention;

[0029] Figure 8 This is a state diagram after the rotation is completed in this invention;

[0030] Figure 9 This is a schematic diagram of the massage device in this invention;

[0031] The components are as follows: 1-Lifting column, 2-Shielding cover, 3-Motor box, 4-Transmission box, 5-Drive shaft, 6-Lifting base, 7-Input shaft, 8-Chain, 9-Sprocket, 10-Pneumatic spring one, 11-Guide wheel, 12-Small guide wheel, 13-Moving rod, 14-Moving bracket, 15-Moving small rod, 16-Single chain, 17-Chain buckle, 18-Chain lock plate, 19-Shielding mounting plate, 20-Rotating shaft, 21-Moving rod one, 22-Moving rod two, 23-Moving rod three, 24-Moving rod four. 25-Moving rod five, 26-Moving rod six, 27-Pneumatic spring two, 28-Pneumatic spring connecting frame, 29-Pneumatic spring three, 30-Rotating top shell, 31-Power box, 32-Oscillating motor, 33-First swing arm, 34-Fixed column, 35-Second swing arm, 36-Horizontal rod, 37-Vertical rod, 38-Sliding tube, 39-Plate, 40-Striking column, 41-First rocker arm, 42-Connecting arm, 43-Second rocker arm, 44-Rotating column, 45-Massage plate, 46-Massage block, 100-Swimming pool. Detailed Implementation

[0032] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] This invention provides an automatic lifting device suitable for swimming pools, such as... Figure 1-3 As shown, it includes: two lifting columns 1 and a shielding cover 2, with the top ends of the two lifting columns 1 rotatably connected to the shielding cover 2. A motor box 3 is provided on one side of the lifting column 1, and a drive motor is provided inside the motor box 3. A transmission box 4 is provided between the motor box 3 and the lifting column 1, and a sprocket and chain are provided inside the transmission box 4. The output end of the drive motor is connected to one end of the sprocket and chain, and the other end of the sprocket and chain is connected to one end of the transmission shaft 5. The other end of the transmission shaft 5 extends into the lifting column 1.

[0037] The working principle and beneficial effects of the above technical solution are as follows: When the cover 2 needs to be lowered, the drive shaft 5 rotates in the opposite direction, driving the lifting structure chain inside the lifting column. The chain movement compresses the main pneumatic spring, which in turn drives the movable part of the lifting mechanism to descend until it reaches a certain height. At this point, the pneumatic spring of the rotating structure begins to compress, and the movable link converts the linear power into circular motion, causing the cover to rotate from tilted to horizontal, thus covering the pool 100. When the cover rises, the drive shaft 5 rotates, driving the lifting structure chain inside the lifting column. The chain movement releases the main pneumatic spring, which lifts the lifting column. Simultaneously, the pneumatic spring of the rotating mechanism begins to release its stroke, and the movable link rotates the cover 2 from horizontal to tilted. The rise and rotation of the cover can be achieved by driving a motor, and the reverse rotation and descent of the cover can be achieved by rotating the motor in the opposite direction. No additional drive source or control unit is required, which improves efficiency and reduces costs.

[0038] In one embodiment, the lifting column 1 consists of an outer shell, a lifting structure, and a rotating structure. The lifting column 1 is a rectangular column, and the outer shell is a telescopic structure composed of three C-shaped channel steels. The telescopic outer shell, composed of three layers of C-shaped channel steels, has an initial height of 1.1 meters and can be fully extended to 2.3 meters.

[0039] In one embodiment, such as Figure 4-6 As shown, the lifting structure includes: a lifting base 6, an input shaft 7, a chain 8, a sprocket 9, a pneumatic spring 10, a guide wheel 11, a small guide wheel 12, a movable rod 13, a movable bracket 14, a movable small rod 15, a single chain 16, a chain buckle 17, and a chain locking plate 18. The chain 8, which runs vertically inside the lifting column 1, rotates to form a relative displacement, releasing and compressing the pneumatic spring 10 to complete the lifting. The internal drive chain 8 of the lifting column 1 has a U-shaped path, with the lower left and upper right sides of the chain 8 path divided into a fixed side and a movable side.

[0040] The fixed side is the lifting base 6, and the movable side has two layers. The lower layer consists of the movable rod 13, guide wheel 11, pneumatic spring 10, and small guide wheel 12. The upper layer consists of the movable rod 15, chain lock plate 18, single chain 16, and chain buckle 17. The pneumatic spring 10 connects the lifting base 6 and the lower layer of the movable side. The pneumatic spring cylinder connects the movable rod 13 to the movable bracket 14 at the end of the movable rod. The single chain 16 connects the lifting base 6 and the upper layer of the movable side. The two ends of the single chain 16 are connected to the lifting base 6 and the chain lock plate 18 by chain buckles. The chain lock plate 18 is fixed at a point on the chain 8 and is also connected to the movable rod 15.

[0041] The working principle and beneficial technical effects of the above technical solution are as follows: The drive motor transmits power to the transmission shafts 5 on both sides via sprockets and chains, and then to the lifting column. The chains 8 running vertically inside the lifting columns on both sides rotate, creating relative displacement and releasing the compression of the pneumatic spring-10 to complete the lifting and lowering process. During descent, the chain locking plate 18 on the movable side of the rotating chain 8 will decrease in distance from the ground as the chain moves, causing the center of the single chain 16 to move downward and compressing the pneumatic spring-10 to contract downward. At this time, the chain locking plate 18 drives the movable rod 15, and the pneumatic spring-10 drives the movable rod 13. The movable rod 15 and the movable rod 13 move downward simultaneously, and the height of the lifting column decreases.

[0042] In one implementation, such as Figure 7-8 As shown, the rotating structure includes: a cover mounting plate 19, a rotating shaft 20, movable rod 1 21, movable rod 22, movable rod 3 23, movable rod 4 24, movable rod 5 25, movable rod 6 26, a pneumatic spring 27, a pneumatic spring connecting frame 28, a pneumatic spring 3 29, and a rotating top shell 30. The rotating top shell 30 is assembled into a C-shape by U-shaped grooves, with a long side, a short side, and a middle section. The middle section is the top of the rotating top shell. Each of the long and short sides has a hole as a hinge point for the movable connecting rod. The short side hole is the center of rotation of the cover 2 and also the starting point of the movable connecting rod. The long side hole is the middle connection point of the movable connecting rod. At the same time, a fan-shaped cut is opened above the middle connection point to limit the rotation of the cover 2. The rotating shaft 20 is rotatably connected to the short side hole of the rotating top shell 30. One end of the rotating shaft 20 is connected to the cover. One end of the mounting plate 19 is connected to the cover plate 2, and the other end of the mounting plate 19 is connected to the cover plate 2. The other end of the rotating shaft 20 is connected to one end of the movable rod 1 21. The other end of the movable rod 1 21 is connected to one end of the movable rod 22. The movable rod 3 23 is arc-shaped. The middle part of the movable rod 22 is hinged to the upper end of the movable rod 3 23. The lower end of the movable rod 3 23 is hinged to the movable rod 4 24. One end of the movable rod 4 24 is hinged to the fixing hole on the long side of the rotating top shell 30. The other end of the movable rod 4 24 is hinged to one end of the movable rod 5 25. The other end of the movable rod 5 25 is hinged to one end of the movable rod 6 26. The other end of the movable rod 6 26 is connected to the gas spring connecting frame 28. The upper end of the gas spring connecting frame 28 is connected to the pneumatic spring 2 27. The lower end of the gas spring connecting frame 28 is connected to the pneumatic spring 3 29.

[0043] The working principle and beneficial technical effects of the above technical solution are as follows: During the lifting process, the stroke of pneumatic spring 10 is released, and the linear stroke of pneumatic spring 1 is converted into a circular stroke through multiple movable linkages to achieve rotation. In the initial state, pneumatic spring 27 and pneumatic spring 39 are in a compressed state. The lifting column 1 rises, pneumatic spring 27 releases its stroke, the pneumatic spring connecting frame 28 moves downward relative to the rotating top shell 30, and movable rod 5 25 moves downward, dragging movable rod 4 24 downward to rotate. Movable rod 4 24 rotates downward and drags movable rod 22 and movable rod 1 21 at the same angle as the cover plate in a tangential direction through movable rod 3 23 until the limit is reached to complete the rotation process, thereby driving the cover mounting plate 19 and the cover 2 to complete the rotation.

[0044] In one embodiment, such as Figure 9 As shown, the device includes a massage mechanism, comprising: a power box 31, a swing motor 32, a first swing arm 33, a fixed column 34, and a second swing arm 35. The power box 31 is located at the bottom of the cover 2. The swing motor 32 is mounted on the inner wall of the power box 31. The output shaft of the swing motor 32 is vertically connected to one end of the first swing arm 33. The fixed column 34 is mounted on the inner wall of the power box 31. The output shaft of the swing motor 32 and the fixed column 34 are on the same horizontal plane. One end of the second swing arm 35 is hinged to the fixed column 34. The first swing arm 33 and the second swing arm 35 are parallel and of the same length. The other end of the first swing arm 33 is hinged to one end of a horizontal rod 36. The other end of the horizontal rod 36 is connected to one end of a vertical rod 37. The other end of the vertical rod 37 extends through a slide tube 38 to the bottom of the power box 31 and connects to the top of a plate 39. The vertical rod 37 is slidably connected to the slide tube 38. Several tapping columns 40 are located at the bottom of the plate 39.

[0045] One end of the first rocker arm 41 is hinged to the first swing arm 33, and the other end of the first rocker arm 41 is hinged to one end of the connecting arm 42. One end of the second rocker arm 43 is hinged to the second swing arm 35. The first rocker arm 41 and the second swing arm 35 are parallel and of the same length. The outer wall of the second swing arm 35 is connected to one end of the rotating column 44. The other end of the rotating column 44 is rotatably connected to the outer wall of the slide tube 38. The other end of the second rocker arm 43 is hinged to the connecting arm 42. The other end of the connecting arm 42 is connected to the massage plate 45. Several massage blocks 46 are provided at the bottom of the massage plate 45. The massage blocks 46 are hemispherical.

[0046] The working principle and beneficial effects of the above technical solution are as follows: When the user gets tired from swimming, the cover 2 moves downward, causing the massage block 46 to descend and contact the user's back. This activates the swing motor 32, which drives the first swing arm 33 to swing back and forth. The first swing arm 33 and the second swing arm 35 swing back and forth simultaneously, which in turn drives the first rocker arm 41 and the second rocker arm 43 to swing back and forth simultaneously. The relative movement of the first swing arm 33 and the first rocker arm 41 causes the connecting arm 42 to move back and forth horizontally, which in turn moves the massage plate 45 and the massage block 46 back and forth to massage the back. In addition, the horizontal bar 36 and the vertical bar 37 move back and forth horizontally. Simultaneously, the vertical rod 37 moves up and down relative to the sliding tube 38, causing the flat plate 39 and the striking column 40 to move back and forth along an arc, striking acupoints on the back of the human body, promoting blood circulation, relieving fatigue. The massage block 46 and the striking column 40 are a compound movement. The massage block 46 first moves to the right to massage the back, and then the striking column 40 presses down to strike acupoints on the back. After that, the striking column 40 first lifts up, and the massage block 46 moves to the left again to massage the struck area. This cycle continues, alternating to massage the back of the human body, allowing swimmers to fully relax and quickly recover their strength after swimming.

[0047] In one embodiment, a maintenance port 47 is provided on the side wall of the power box 31, and a cover plate 48 is provided on the maintenance port 47. The cover plate 48 is connected to the side wall of the power box 31 by screws, so as to facilitate opening the cover plate 48 and inspecting the components of the power box.

[0048] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An automatic lifting device suitable for swimming pools, characterized in that, include: Two lifting columns (1) and a shielding cover (2), with the tops of the two lifting columns (1) rotatably connected to the shielding cover (2); The lifting column (1) consists of an outer shell, a lifting structure, and a rotating structure. The lifting column (1) is a rectangular column, and the outer shell is composed of three C-shaped channel steels forming a telescopic structure. The lifting structure includes: a lifting base (6), an input shaft (7), a chain (8), a sprocket (9), a pneumatic spring (10), a guide wheel (11), a small guide wheel (12), a movable rod (13), a movable bracket (14), a movable small rod (15), a single chain (16), a chain buckle (17), and a chain lock plate (18). The input shaft (7) is located inside the lifting base (6), and the outer end of the input shaft (7) is connected to the transmission shaft (5). A sprocket (9) is installed outside the input shaft (7). The guide wheel (11) and the small guide wheel (12) are installed vertically in the inner cavity of the lifting column (1). The chain (8) is wrapped around the sprocket (9), the guide wheel (11), and the small guide wheel (12) in sequence. The vertically moving chain (8) inside the lifting column (1) rotates to form a relative displacement. The lifting is completed by releasing and compressing the pneumatic spring (10) for one stroke. The internal drive chain (8) of the lifting column (1) forms a U-shaped path. The lower left and upper right sides of the chain (8) path are divided into a fixed side and a movable side. The fixed side is the lifting base (6), and the movable side has two layers. The lower layer consists of the movable rod (13), guide wheel (11), pneumatic spring 1 (10), and small guide wheel (12). The upper layer consists of the movable rod (15), chain lock plate (18), single chain (16), and chain buckle (17). The pneumatic spring 1 (10) connects the lifting base (6) and the lower layer of the movable side. The pneumatic spring cylinder connects the movable rod (13) to the movable bracket (14) at the end of the movable rod. The single chain (16) connects the lifting base (6) and the upper layer of the movable side. The two ends of the single chain (16) are connected to the lifting base (6) and the chain lock plate (18) respectively by the chain buckle (17). The chain lock plate (18) is fixed at a point on the chain (8) and connected to the movable rod (15).

2. The automatic lifting device suitable for swimming pools according to claim 1, characterized in that, A motor box (3) is provided on one side of the lifting column (1). A drive motor is provided inside the motor box (3). A transmission box (4) is provided between the motor box (3) and the lifting column (1). A sprocket and chain are provided inside the transmission box (4). The output end of the drive motor is connected to one end of the sprocket and chain. The other end of the sprocket and chain is connected to one end of the transmission shaft (5). The other end of the transmission shaft (5) extends into the lifting column (1).

3. An automatic lifting device suitable for swimming pools according to claim 1, characterized in that, The rotating structure includes: a cover mounting plate (19), a rotating shaft (20), a movable rod one (21), a movable rod two (22), a movable rod three (23), a movable rod four (24), a movable rod five (25), and a movable rod six (26). Pneumatic spring 2 (27), pneumatic spring connecting frame (28), pneumatic spring 3 (29), rotating top shell (30). The rotating top shell (30) is spliced ​​into a letter C shape by U-shaped grooves, with a long side, a short side and a middle section. The middle section is the top of the rotating top shell. There is a hole on each of the long and short sides as the hinge point of the movable connecting rod. The short side hole is the center of rotation of the cover (2) and also the starting point of the movable connecting rod. The long side hole is the middle connection point of the movable connecting rod. At the same time, a fan-shaped cut is opened above the middle connection point as the rotation limit of the cover (2). The rotating shaft (20) is rotatably connected to the short side hole of the rotating top shell (30). One end of the rotating shaft (20) is connected to one end of the cover mounting plate (19). The other end of the cover mounting plate (19) is connected to the cover (2). The other end of the rotating shaft (20) is connected to the movable top shell (30). One end of the movable rod (21) is connected to the other end of the movable rod (21) and one end of the movable rod (22). The movable rod (23) is arc-shaped. The middle part of the movable rod (22) is hinged to the upper end of the movable rod (23). The lower end of the movable rod (23) is hinged to the movable rod (24). One end of the movable rod (24) is hinged to the fixed hole on the long side of the rotating top shell (30). The other end of the movable rod (24) is hinged to one end of the movable rod (25). The other end of the movable rod (25) is hinged to one end of the movable rod (26). The other end of the movable rod (26) is connected to the gas spring connecting frame (28). The upper end of the gas spring connecting frame (28) is connected to the pneumatic spring (27). The lower end of the gas spring connecting frame (28) is connected to the pneumatic spring (29).

4. An automatic lifting device suitable for swimming pools according to claim 1, characterized in that, The device includes a massage unit, comprising: a power box (31), a swing motor (32), a first swing arm (33), a fixed column (34), and a second swing arm (35). The power box (31) is located at the bottom of the cover (2). The swing motor (32) is located on the inner wall of the power box (31). The output shaft of the swing motor (32) is perpendicularly connected to one end of the first swing arm (33). The fixed column (34) is located on the inner wall of the power box (31). The output shaft of the swing motor (32) and the fixed column (34) are on the same horizontal plane. One end of the second swing arm (35) is hinged to the fixed column (34). The first swing arm (33) is parallel to the second swing arm (35) and has the same length. The other end of the first swing arm (33) is hinged to one end of the horizontal rod (36). The other end of the horizontal rod (36) is connected to one end of the vertical rod (37). The other end of the vertical rod (37) passes through the slide tube (38) and extends to the bottom of the power box (31) and is connected to the top of the plate (39). The vertical rod (37) is slidably connected to the slide tube (38). Several striking columns (40) are provided at the bottom of the plate (39).

5. An automatic lifting device suitable for swimming pools according to claim 4, characterized in that, One end of the first rocker arm (41) is hinged to the first swing arm (33), and the other end of the first rocker arm (41) is hinged to one end of the connecting arm (42). One end of the second rocker arm (43) is hinged to the second swing arm (35). The first rocker arm (41) and the second swing arm (35) are parallel and of the same length. The outer wall of the second swing arm (35) is connected to one end of the rotating column (44). The other end of the rotating column (44) is rotatably connected to the outer wall of the slide tube (38). The other end of the second rocker arm (43) is hinged to the connecting arm (42). The other end of the connecting arm (42) is connected to the massage plate (45). Several massage blocks (46) are provided at the bottom of the massage plate (45).

6. An automatic lifting device suitable for swimming pools according to claim 4, characterized in that, The massage block (46) is hemispherical.

7. An automatic lifting device suitable for swimming pools according to claim 4, characterized in that, An inspection port (47) is provided on the side wall of the power box (31), and a cover plate (48) is provided on the inspection port (47). The cover plate (48) is connected to the side wall of the power box (31) by screws.

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