Medical bed with automatic height adjustment and lateral tilting function

Abstract

The utility model discloses a kind of medical beds with automatic height adjustment and side turning function, it is related to medical instrument technical field, including universal pulley, the top end of universal pulley is fixedly connected with support frame, lifting mechanism is installed on the support frame, the one end of lifting mechanism is installed with bed board frame, side turning mechanism is installed on the bed board frame.The utility model passes through the design that oil pressure cylinder cylinder body end rotates adaptively around first linkage shaft, so that cylinder can flexibly adjust own posture with side turning angle change in the process of promoting side turning plate to overturn, avoid the additional torque generated due to fixed angle limit, completely avoid the risk of stress deformation of cylinder;Meanwhile, the hinged cooperation of first and second side turning plate, synchronous overturning around hinge shaft line, ensure that bed board is evenly stressed when side turning overall, without local overload condition, significantly prolong the service life of side turning mechanism, reduce equipment maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a medical bed with automatic height adjustment and side-tilting functions. Background Technology

[0002] Medical beds are hospital beds used by patients with limited mobility during hospitalization or home care. For patients who are paralyzed, have undergone surgery, have various physiological problems that require bed rest, or have other mobility limitations, a suitable nursing bed can help them recover.

[0003] Currently, CN 221154548 U discloses a nursing medical bed device, relating to the field of nursing medical technology. It includes a support frame arranged symmetrically on both sides; a turntable rotatably arranged between the two sets of supports, the turntable having a circular structure, wherein a first support plate and a second support plate are respectively arranged on both sides of the turntable, and each of the first and second support plates has an arc-shaped groove corresponding to the outer end face of the turntable on the side closest to it; it also includes a rotating mechanism for driving the turntable to rotate. In this invention, when a patient needs to get out of bed, medical staff first help the patient up and allow them to sit on the turntable, and then the rotating mechanism drives the turntable to rotate in the direction the patient needs to get out of bed. This invention eliminates the need for medical staff to manually rotate the patient's sitting position, achieving an automatic adjustment effect, making it more convenient.

[0004] The existing technology uses a turntable to automatically adjust the patient's sitting position, which solves the problem of the effort required for medical staff to manually adjust the patient's sitting position. However, there are still situations where the height of the medical bed cannot be adjusted and the side tilting of the medical bed cannot be adjusted.

[0005] This solution addresses the safety hazards of easy oil leakage in hydraulic lifting and easy slippage of ordinary lead screws due to lack of self-locking by using a worm gear transmission structure. It also solves the problems of synchronous rotation around the hinge axis by the hinged cooperation of the first and second side flip plates, ensuring that the bed board is evenly stressed during side flipping and there is no local overload, thus significantly extending the service life of the side flipping mechanism. Utility Model Content

[0006] The purpose of this invention is to provide a medical bed with automatic height adjustment and side-tilting functions to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A medical bed with automatic height adjustment and side-tilting function includes universal pulleys, a support frame fixedly connected to the top of the universal pulleys, a lifting mechanism installed on the support frame, a bed board frame installed at one end of the lifting mechanism, and a side-tilting mechanism installed on the bed board frame.

[0009] The lifting mechanism includes a support base and a turbine rod. The support base is threadedly connected to the surface of the support frame. A base plate is fixedly connected to the top of the support base, and a turbine disk is rotatably connected to the base plate.

[0010] A further improvement of this utility model is that: a threaded post is threadedly connected to the turbine disk, one end of the threaded post is threadedly connected to the inside of the support base, a chassis is fixedly connected to the top of the threaded post, and a bed frame is fixedly connected to one end of the chassis. After receiving a signal, the servo motor drives the turbine rod to rotate clockwise, and the turbine rod drives the meshing turbine disk to rotate counterclockwise.

[0011] A further improvement of this utility model is that: a turbine disk is meshed with one side of the turbine rod, and a housing is provided outside the turbine rod and the turbine disk. A servo motor is fixedly connected to one side of the housing, and the output end of the servo motor is fixedly connected to the turbine rod. The internal thread of the turbine disk is engaged with the external thread of the threaded column. Since the axial displacement of the turbine disk is restricted by the base plate, the rotational motion is converted into the axial upward motion of the threaded column.

[0012] A further improvement of the present invention is that the side-tilting mechanism includes a side-tilting frame, which is mounted on a bed frame. A vertical plate is fixedly connected to the side-tilting frame, and a first linkage shaft is mounted on the vertical plate. The design of the hydraulic cylinder body end rotating adaptively around the first linkage shaft allows the cylinder to flexibly adjust its posture according to the change of the side-tilting angle during the process of pushing the side-tilting plate to flip.

[0013] A further improvement of this utility model is that: a hydraulic cylinder is movably connected to the first linkage shaft, a second linkage shaft is installed on the telescopic end of the hydraulic cylinder, a first side flip plate is fixedly connected to the second linkage shaft, and the first and second side flip plates are hinged together and rotate synchronously around the hinge axis to ensure that the bed board is subjected to uniform force when it flips.

[0014] A further improvement of the present invention is that: a second side flap is hinged to one side of the first side flap, and a second linkage shaft is fixedly connected to the top of the second side flap. The design of the hydraulic cylinder body end rotating adaptively around the first linkage shaft allows the cylinder to flexibly adjust its posture according to the change of the side flap angle during the process of pushing the side flap to flip.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] 1. This utility model provides a medical bed with automatic height adjustment and tilting functions. After receiving a signal, the servo motor drives the worm gear to rotate clockwise, which in turn drives the meshing worm disk to rotate counterclockwise. The internal thread of the worm disk engages with the external thread of the threaded column. Since the axial displacement of the worm disk is restricted by the base plate, the rotational motion is converted into the axial upward motion of the threaded column. The threaded column drives the base to move upward axially, causing the bed frame to rise synchronously. When lowering the medical bed, the servo motor rotates in the opposite direction, the worm gear rotates counterclockwise, the worm disk rotates clockwise, and the threaded column descends axially. The threaded column drives the base to descend axially until the target height is reached. Compared with the hydraulic lifting mechanism commonly used in the prior art, the worm gear transmission structure has a large transmission ratio and has its own mechanical self-locking characteristics. When the power is off, the threaded column can stably maintain the current height, avoiding the safety hazards of easy oil leakage in hydraulic lifting and easy slippage in ordinary screws without self-locking.

[0017] 2. This utility model provides a medical bed with automatic height adjustment and side-tilting functions. The design of the hydraulic cylinder body rotating adaptively around the first linkage shaft allows the cylinder to flexibly adjust its posture according to the side-tilting angle during the process of pushing the side-tilting plate to flip, avoiding the extra torque caused by the fixed angle limitation and completely avoiding the risk of cylinder deformation due to force. At the same time, the hinged cooperation of the first and second side-tilting plates and their synchronous flipping around the hinge axis ensure that the bed board is subjected to uniform force during side-tilting, without local overload, significantly extending the service life of the side-tilting mechanism and reducing equipment maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the lifting mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the side-tilting mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the side-tilting mechanism of this utility model.

[0022] In the diagram: 1. Universal pulley; 2. Support frame; 3. Lifting mechanism; 30. Support base; 31. Base plate; 32. Servo motor; 33. Turbine rod; 34. Housing; 35. Threaded column; 36. Chassis; 37. Turbine disk; 4. Bed board frame; 5. Side tilting mechanism; 50. Side tilting frame; 51. First side tilting plate; 52. Second side tilting plate; 53. Vertical plate; 54. First linkage shaft; 55. Hydraulic cylinder; 56. Second linkage shaft. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to embodiments:

[0024] Example 1

[0025] like Figure 1-4 As shown, this utility model provides a medical bed with automatic height adjustment and side-tilting function, including universal pulley 1, a support frame 2 fixedly connected to the top of the universal pulley 1, a lifting mechanism 3 installed on the support frame 2, a bed board frame 4 installed at one end of the lifting mechanism 3, a side-tilting mechanism 5 installed on the bed board frame 4, the lifting mechanism 3 includes a support base 30 and a turbine rod 33, the support base 30 is threadedly connected to the surface of the support frame 2, a base plate 31 is fixedly connected to the top of the support base 30, a turbine disk 37 is rotatably connected to the base plate 31, a threaded post 35 is threadedly connected to the turbine disk 37, one end of the threaded post 35 is threadedly connected to the inside of the support base 30, a base plate 36 is fixedly connected to the top of the threaded post 35, a bed board frame 4 is fixedly connected to one end of the base plate 36, a turbine disk 37 is meshed with one side of the turbine rod 33, a housing 34 is provided outside the turbine rod 33 and the turbine disk 37, a servo motor 32 is fixedly connected to one side of the housing 34, and the turbine rod 33 is fixedly connected to the output end of the servo motor 32;

[0026] Specifically, when it is necessary to raise the medical bed, medical staff send an "raise" command through the controller:

[0027] After receiving the signal, the servo motor 32 drives the turbine rod 33 to rotate clockwise. The turbine rod 33 drives the meshing turbine disk 37 to rotate counterclockwise. The internal thread of the turbine disk 37 engages with the external thread of the threaded column 35. Since the axial displacement of the turbine disk 37 is restricted by the base plate 31, the rotational motion is converted into the axial upward motion of the threaded column 35. The threaded column 35 drives the base plate 36 to perform axial upward motion, which drives the bed frame 4 to rise synchronously.

[0028] By installing a grating ruler on the base plate 31, the grating ruler can detect the rising distance of the threaded column 35 in real time. When the target height is reached, the main control chip sends a stop signal, the servo motor 32 stops running, and at the same time triggers the motor brake function to prevent the bed frame 4 from sliding down due to its own weight.

[0029] When the medical bed is lowered, the servo motor 32 rotates in the reverse direction, the turbine rod 33 rotates counterclockwise, the turbine disk 37 rotates clockwise, the threaded column 35 descends axially, and the threaded column 35 drives the chassis 36 to descend axially until the target height is reached.

[0030] Example 2

[0031] like Figure 1-4As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the side-flipping mechanism 5 includes a side-flipping frame 50, which is mounted on the bed frame 4. A vertical plate 53 is fixedly connected to the side-flipping frame 50. A first linkage shaft 54 ​​is mounted on the vertical plate 53. A hydraulic cylinder 55 is movably connected to the first linkage shaft 54. A second linkage shaft 56 is mounted on the telescopic end of the hydraulic cylinder 55. A first side-flipping plate 51 is fixedly connected to the second linkage shaft 56. A second side-flipping plate 52 is hinged to one side of the first side-flipping plate 51. The second linkage shaft 56 is fixedly connected to the top of the second side-flipping plate 52.

[0032] Specifically,

[0033] The hydraulic cylinder 55 is connected to the hydraulic pump station controller and linked with the hydraulic pump station. The extension and retraction direction of the hydraulic cylinder 55 is controlled by the solenoid valve (not shown in the figure). At the same time, an angle sensor can be installed on the side tilting frame 50. The tilting angle of the side tilting plate is collected in real time by the angle sensor (model WDD35D4) to form an angle closed-loop control.

[0034] When the hydraulic pump station starts, the solenoid valve switches to the left position, and high-pressure oil enters the rodless chamber of the hydraulic cylinder 55, pushing the telescopic end to extend.

[0035] The extension end of the hydraulic cylinder 55 drives the first side flap 51 to flip upward around the hinge axis via the second linkage shaft 56. At the same time, the second side flap 52, which is hinged to the first side flap 51, tilts to the left. During this process, the cylinder body end of the hydraulic cylinder 55 rotates adaptively around the first linkage shaft 54 ​​to avoid deformation of the cylinder under force.

[0036] An angle sensor detects the flipping angle of the first side flap 51 in real time. When it reaches 15°, the controller sends a signal to the hydraulic pump station to stop the oil supply. At the same time, the solenoid valve is de-energized and reset, and the hydraulic cylinder 55 maintains the current extension length. The side flap is stabilized at the 15° side flipping position. The second side flap 52 is also equipped with a hydraulic cylinder 55 at the bottom. Therefore, the second side flap 52 can be flipped by the hydraulic cylinder 55.

[0037] To reset or flip to the right, the controller switches the solenoid valve to the right position, and high-pressure oil enters the rod chamber of the hydraulic cylinder 55, pushing the telescopic end to retract, and the side flap gradually returns to a horizontal position or flips to the right.

[0038] The working principle of this medical bed with automatic height adjustment and tilting function will be explained in detail below.

[0039] like Figure 1-4As shown, the internal thread of the turbine disk 37 engages with the external thread of the threaded column 35. Since the turbine disk 37 is restricted from axial displacement by the base plate 31, the rotational motion is converted into the axial upward motion of the threaded column 35. The threaded column 35 drives the base plate 36 to move upward in an axial direction, which in turn drives the bed frame 4 to rise synchronously. The telescopic end of the hydraulic cylinder 55 drives the first side flap 51 to flip upward around the hinge axis through the second linkage shaft 56. At the same time, the second side flap 52 tilts to the left synchronously because it is hinged to the first side flap 51. During this process, the cylinder body end of the hydraulic cylinder 55 rotates adaptively around the first linkage shaft 54 ​​to avoid deformation of the cylinder under force.

[0040] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A medical bed with automatic height adjustment and tilting function, comprising universal casters (1), characterized in that: The top of the universal pulley (1) is fixedly connected to a support frame (2), a lifting mechanism (3) is installed on the support frame (2), a bed board frame (4) is installed at one end of the lifting mechanism (3), and a side-turning mechanism (5) is installed on the bed board frame (4). The lifting mechanism (3) includes a support base (30) and a turbine rod (33). The support base (30) is threadedly connected to the surface of the support frame (2). A base plate (31) is fixedly connected to the top of the support base (30), and a turbine disk (37) is rotatably connected to the base plate (31).

2. The medical bed with automatic height adjustment and tilting function according to claim 1, characterized in that: A threaded post (35) is threaded onto the turbine disk (37). One end of the threaded post (35) is threaded onto the inside of the support base (30). A chassis (36) is fixedly connected to the top of the threaded post (35). A bed frame (4) is fixedly connected to one end of the chassis (36).

3. A medical bed with automatic height adjustment and tilting function according to claim 2, characterized in that: A turbine disk (37) is engaged with one side of the turbine rod (33). A housing (34) is provided outside the turbine rod (33) and the turbine disk (37). A servo motor (32) is fixedly connected to one side of the housing (34). The output end of the servo motor (32) is fixedly connected to the turbine rod (33).

4. A medical bed with automatic height adjustment and tilting function according to claim 1, characterized in that: The side-flipping mechanism (5) includes a side-flipping frame (50), which is mounted on the bed frame (4). A vertical plate (53) is fixedly connected to the side-flipping frame (50), and a first linkage shaft (54) is mounted on the vertical plate (53).

5. A medical bed with automatic height adjustment and tilting function according to claim 4, characterized in that: A hydraulic cylinder (55) is movably connected to the first linkage shaft (54), and a second linkage shaft (56) is installed on the telescopic end of the hydraulic cylinder (55). A first side flap (51) is fixedly connected to the second linkage shaft (56).

6. A medical bed with automatic height adjustment and tilting function according to claim 5, characterized in that: A second side flap (52) is hinged to one side of the first side flap (51), and a second linkage shaft (56) is fixedly connected to the top of the second side flap (52).

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