An anti-falling lifting motor for the bed body of an intelligent bed

Abstract

An intelligent bed body anti-falling lifting motor belongs to the technical field of medical devices. A set of damping cylinders is arranged at the bottom of the mover. An elastic anti-falling connecting plate is installed between the telescopic shaft of the cylinder and the mover. Rollers are installed on both sides of the connecting plate. Friction plates are arranged on the rollers and installed in a specific track. When the motor rises under load, the air valves of the expansion cavities of the three cylinders in the damping cylinder are all opened according to the set opening and closing degrees. The extending speeds of the telescopic shafts of the three cylinders are the same. At this time, the anti-falling connecting plate is in a horizontal state. The friction plates on the rollers are vertically downward under the action of gravity and have no friction with the rubber layer on the side wall of the locking rail, and the mover can rise smoothly. When the mover coil is powered off or the mover is subjected to a sudden load, the main cylinder in the damping cylinder is first stressed and contracts. The anti-falling connecting plate is stressed and deformed, and the middle part of the connecting plate is concave downward. The rollers on both sides of the connecting plate contact the side wall of the locking rail and roll. The friction plates on the rollers friction-lock with the rubber layer, avoiding the fall of the mover.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an anti-falling lifting motor for the bed body of an intelligent bed. Background Art

[0002] A liftable electric hospital bed generally consists of a movable bed frame and a lifting mechanism. The lifting mechanism generally uses a pressure cylinder as the power source. Patent Publication No. CN203226972U discloses an electric liftable medical hospital bed. The bed board installed on the movable bed frame is designed as a back bed board, a hip bed board, a leg bed board, and a foot bed board. Among them, the hip bed board is fixedly installed on the bed frame, the back bed board is hinged on the hip bed board, and the leg bed board and the foot bed board are hinged to each other. The electric hospital bed with this patented structure uses a hinge frame and a hydraulic cylinder to lift the entire hospital bed, which facilitates the treatment of doctors and patients. However, the disadvantage is that the hydraulic cylinder is directly installed at the bottom of the bed board of the movable bed frame, which will generate strong vibrations during operation, the transmission is unstable, and it may cause secondary injuries to patients. Summary of the Invention

[0003] The technical task of the present invention is to solve the deficiencies of the prior art and provide an anti-falling lifting motor for the bed body of an intelligent bed.

[0004] The core idea of the technical solution involved in the present invention is:

[0005] Design a mechanism that can reduce the vibration of the bed body and prevent falling. In order to achieve the purpose of lifting the bed body within a limited space, a linear motor is designed as the power source inside the bed legs. The fixed part of the leg installs the stator of the motor, and the movable part of the leg installs the rotor of the motor. At the same time, a set of damping cylinders is arranged at the bottom of the rotor. An elastic anti-falling connecting plate is installed between the telescopic shaft of the cylinder and the rotor. Rollers are installed on both sides of the connecting plate, friction plates are arranged on the rollers and installed in a specific track. During the process of the motor lifting with load, the air valves of the expansion cavities of the three cylinders in the damping cylinder are all opened according to the set opening and closing degrees, and the extending speeds of the telescopic shafts of the three cylinders are the same. At this time, the anti-falling connecting plate is in a horizontal state, and the friction plates on the rollers are vertically downward under the action of gravity and have no friction with the rubber layer on the side wall of the locking rail, and the rotor can rise smoothly.

[0006] When the rotor coil is powered off or the rotor is subjected to a sudden load, the main cylinder in the damping cylinder is first stressed and contracts. The anti-falling connecting plate is stressed and deformed, the middle part of the connecting plate is concave downward, the rollers on both sides of the connecting plate contact the side wall of the locking rail and roll, and the friction plates on the rollers friction-lock with the rubber layer, avoiding the falling of the rotor.

[0007] The technical solution adopted by the present invention to solve its technical problems is:

[0008] An anti-falling lifting motor for the bed body of an intelligent bed, comprising a main cylinder. The telescopic shaft of the main cylinder is connected to an anti-falling connecting plate. The anti-falling connecting plate is an elastic steel plate. The two sides of the steel plate are connected to the telescopic shafts of a first driven cylinder and a second driven cylinder. There are mounting rollers on both sides of the anti-falling connecting plate. There are a first friction plate and a second friction plate on the rollers. The rollers are installed in a first locking rail and a second locking rail. The first locking rail and the second locking rail are of a groove structure. Rubber pads are installed on both sides of the rail. The groove width of the first locking rail and the second locking rail is greater than the diameter of the rollers. The anti-falling connecting plate is connected to the mover in the column motor.

[0009] A first solenoid valve and a second solenoid valve are installed on the main cylinder, the first driven cylinder and the second driven cylinder.

[0010] The mover is formed by laminating silicon steel sheets. Grooves are opened on the silicon steel sheets. Coils are installed in the grooves. The mover is installed on a slider. The slider is installed on a guide rail. The guide rail is installed in the housing of the column motor. There is a stator in the column motor. The stator is composed of two parts, a magnetic yoke and a permanent magnet.

[0011] A bracket is installed on the column motor. A load-bearing cross roller is installed in the bracket. A housing is installed outside the bracket.

[0012] The beneficial effects of the anti-falling lifting motor for the bed body of the intelligent bed of the present invention compared with the prior art are as follows:

[0013] (1) The cylinder damping structure designed in the present invention can produce a damping effect on the movement of the motor during the rising and falling processes of the bed body, making the bed body operate more smoothly and avoiding the vibration of the bed body caused by the jogging of the motor.

[0014] (2) The designed anti-falling structure can prevent the rollers on both sides of the elastic steel plate from getting stuck on the side walls of the guide groove in the state where the bed body is subjected to a sudden load or the motor power fails, avoiding the fall of the bed body and enhancing the safety performance of the equipment. Description of the Drawings

[0015] Attached Figure 1 is the structure diagram of the bed body of the present invention;

[0016] Attached Figure 2 is the front view of the motor of the present invention;

[0017] Attached Figure 3 is the left view of the motor of the present invention;

[0018] Attached Figure 4 is the front view of the roller of the present invention;

[0019] In the figure:

[0020] 1. Column motor, 2. Main cylinder, 3. First slave cylinder, 4. Second slave cylinder, 501. First solenoid valve, 502. Second solenoid valve, 6. Anti-fall connecting plate, 701. First locking rail, 702. Second locking rail, 8. Stator, 9. Rotor, 10. Guide rail, 11. Slide block, 13. Roller, 131. First friction plate, 132. Second friction plate, 14. Housing, 15. Bracket, 16. Load-bearing cross roller, 17. Rubber pad. Detailed implementation mode

[0021] The following will make a detailed description of the present invention in conjunction with the accompanying drawings.

[0022] An anti-fall lifting motor for the bed body of an intelligent bed, including a main cylinder 2. The telescopic shaft of the main cylinder 2 is connected to an anti-fall connecting plate 6. The anti-fall connecting plate is an elastic steel plate. The two sides of the steel plate are connected to the telescopic shafts of a first slave cylinder 3 and a second slave cylinder 4. There are mounting rollers 13 on both sides of the anti-fall connecting plate 6. There are a first friction plate 131 and a second friction plate 132 on the rollers 13. The rollers 13 are installed in a first locking rail 701 and a second locking rail 702. The first locking rail 701 and the second locking rail 702 are of a groove structure. Rubber pads 17 are installed on both sides of the track. The groove width of the first locking rail 701 and the second locking rail 702 is greater than the diameter of the roller 13. The anti-fall connecting plate 6 is connected to the rotor 9 in the column motor 1.

[0023] As the first embodiment of the present invention, when the anti-fall connecting plate is in a horizontal state, the friction plates on the rollers have no friction with the rubber layer on the side wall of the locking rail vertically downward under the action of gravity, and the rotor can rise smoothly.

[0024] When the rotor coil is powered off or the rotor is subjected to a sudden load, the main cylinder in the damping cylinder is first stressed and contracts. The anti-fall connecting plate is stressed and deformed. The middle part of the connecting plate is concave downward. The rollers on both sides of the connecting plate contact the side wall of the locking rail and roll. The friction plates on the rollers friction-lock with the rubber layer, preventing the rotor from falling.

[0025] First solenoid valve 501 and second solenoid valve 502 are installed on the main cylinder 2, the first slave cylinder 3 and the second slave cylinder 4.

[0026] As the first embodiment of the present invention, the opening and closing degrees of the first solenoid valve 501 and the second solenoid valve 502 on the main cylinder 2, the first slave cylinder 3 and the second slave cylinder 4 can be adjusted. By adjusting the opening and closing degrees of the solenoid valves, during the rising process of the motor, the rising speed of the telescopic shaft of the cylinder is slightly lower than the rising speed of the rotor of the motor, thereby providing a damping force for the motor.

[0027] As the second embodiment of the present invention, during the descending process of the bed body, relying on the gravity provided by the load and the damping force provided by the damping system. Specifically, by controlling the solenoid valves on the main cylinder 2, the first slave cylinder 3, and the second slave cylinder 4 to slowly release air from the cylinders, the bed body is thus lowered. During this process, the motor is in a power-off state.

[0028] The mover 9 is formed by laminating silicon steel sheets. Grooves are opened on the silicon steel sheets, and coils are installed in the grooves. The mover 9 is installed on the slider 11, the slider 11 is installed on the guide rail 10, and the guide rail 10 is installed in the housing of the column motor 1. There is a stator 8 in the column motor 1, and the stator 8 is composed of two parts: a magnetic yoke and a permanent magnet.

[0029] As the first embodiment of the present invention, a magnetic grating is pasted on the side of the stator 8, and a magnetic grating reader is installed on the mover 9. The optoelectronic system composed of the magnetic grating and the reader can accurately control the start and stop positions of the mover.

[0030] A bracket 15 is installed on the column motor 1, a load-bearing cross roller 16 is installed inside the bracket 15, and a housing 14 is installed outside the bracket 15.

[0031] In summary, the content of the present invention is not limited to the above embodiments. Those skilled in the art can propose other embodiments within the guiding ideology of the present invention, but these embodiments are all included within the scope of the present invention.

Claims

1. An anti-fall lifting motor for the bed body of an intelligent bed, Characterized in that, it includes a main cylinder (2), the telescopic shaft of the main cylinder (2) is connected to an anti-fall connecting plate (6), the anti-fall connecting plate is an elastic steel plate, both sides of the steel plate are connected to the telescopic shafts of a first slave cylinder (3) and a second slave cylinder (4), both sides of the anti-fall connecting plate (6) are provided with mounting rollers (13), the rollers (13) are provided with a first friction plate (131) and a second friction plate (132), the rollers (13) are installed in a first locking rail (701) and a second locking rail (702), the first locking rail (701) and the second locking rail (702) are of a groove structure, rubber pads (17) are installed on both sides of the track, and the groove width of the first locking rail (701) and the second locking rail (702) is greater than the diameter of the rollers (13); the anti-fall connecting plate (6) is connected to a mover (9) in a column motor (1).

2. The anti-fall lifting motor for the bed body of an intelligent bed according to claim 1, Characterized in that, a first solenoid valve (501) and a second solenoid valve (502) are installed on the main cylinder (2), the first slave cylinder (3) and the second slave cylinder (4).

3. The anti-fall lifting motor for the bed body of an intelligent bed according to claim 1, Characterized in that, the mover (9) is laminated by silicon steel sheets, grooves are formed on the silicon steel sheets, coils are installed in the grooves, the mover (9) is installed on a slider (11), the slider (11) is installed on a guide rail (10), the guide rail (10) is installed in the housing of the column motor (1), and a stator (8) is arranged in the column motor (1), and the stator (8) is composed of a magnetic yoke and a permanent magnet.

4. The anti-fall lifting motor for the bed body of an intelligent bed according to claim 1, Characterized in that, a bracket (15) is installed on the column motor (1), a load-bearing cross roller (16) is installed in the bracket (15), and a housing (14) is installed outside the bracket (15).

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