Ceiling track type critical patient lifting and moving device

Abstract

The utility model discloses a kind of sky rail type critical patient lifting and moving device, belong to medical appliance technical field.This kind of sky rail type critical patient lifting and moving device, including two connecting pieces, two connecting pieces between being provided with sky rail assembly, sky rail assembly includes track, the outer wall of two connecting pieces is fixedly connected with the both ends of track, the inside of track is slidably provided with machine head, the bottom of machine head is provided with lifting assembly;The inside of the both ends of track is provided with brake piece;Lifting assembly includes recess, the bottom of recess is welded with electric push rod, the telescopic end of electric push rod is welded with support arm, the both sides of support arm outside are equipped with hook;The bottom of machine head is installed with boss, boss and recess are inserted, and boss and recess are connected by bolt, the utility model can effectively improve critical patient transfer security, with higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a ceiling-mounted lifting and moving device for critically ill patients. Background Technology

[0002] Critically ill patients typically refer to those whose vital signs are unstable due to severe illness, trauma, or other reasons, or who suffer from multiple organ dysfunction, requiring prolonged bed rest and inability to move independently. This includes critically ill patients with a high starting weight. CT scans, as a commonly used clinical imaging diagnostic tool, can clearly show the location, extent, and severity of lesions within the patient's body, providing crucial information for assessing the condition of critically ill patients, developing treatment plans, and monitoring treatment effectiveness. Therefore, for critically ill patients with a high starting weight who require a clear diagnosis, it is necessary to safely transfer them from their regular ward to a CT scan bed to complete the examination.

[0003] Based on the above, the inventors have discovered the following problems: When performing CT scans on critically ill patients with high body weight, the transfer process from the ordinary ward bed to the CT scan bed is extremely labor-intensive and inefficient, as these patients are heavy, weak, and unable to cooperate with the transfer on their own. This may delay the examination and affect the progress of diagnosis and treatment.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a ceiling-mounted lifting and moving device for critically ill patients, in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this invention is to provide a ceiling-mounted lifting and moving device for critically ill patients to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows: A ceiling-mounted lifting and moving device for critically ill patients includes two connecting parts, with a ceiling-mounted assembly between them. The ceiling-mounted assembly includes a track, with both ends of the track fixedly connected to the outer walls of the two connecting parts. A motor head is slidably mounted inside the track, and a lifting assembly is mounted at the bottom of the motor head. Brakes are installed inside both ends of the track. The lifting assembly includes a recess, with an electric push rod welded to the bottom of the recess. A support arm is welded to the telescopic end of the electric push rod, and hooks are installed on both sides of the support arm. A protrusion is mounted at the bottom of the motor head, and the protrusion and recess are inserted into each other and connected by bolts.

[0007] The beneficial effects of adopting the above-mentioned further solution are that the two connecting parts fix the track of the ceiling rail assembly, forming a stable support structure between the hospital bed and the CT bed, ensuring the overall load-bearing capacity of the device is reliable; the machine head slides along the track to realize the horizontal transfer of the patient; the lifting assembly completes the lifting and fixing of the patient through electric push rods, support arms and hooks, and the connecting straps of medical slings and other equipment are hung on the hooks, and the extension and retraction of the electric push rods completes the lifting and moving of the patient; the plug-in cooperation of the convex and concave seats and the connection with bolts not only ensure the stable connection between the lifting assembly and the machine head, avoiding shaking during patient transfer, but also facilitate disassembly and maintenance (such as replacing the lifting assembly or repairing the machine head).

[0008] Furthermore, a dual-axis motor is installed inside the machine head. Both output ends of the dual-axis motor extend through the machine head to the outside. Rollers are fixedly installed on the two output ends of the dual-axis motor. The rotation speed and direction of the two output ends of the dual-axis motor are the same. A heat sink is embedded on one side of the outer wall of the machine head.

[0009] The beneficial effects of adopting the above-mentioned further solutions are that the dual-axis motor drives the two rollers to rotate synchronously (with the same speed and direction), ensuring that the handpiece slides smoothly along the track, avoiding deviation or jamming caused by the speed difference between the two rollers, and improving the stability of patient transfer; the heat sink increases the heat dissipation area, accelerates the dissipation of heat inside the handpiece, prevents the dual-axis motor from overheating when working under high load for a long time, extends the service life of the motor, and ensures the stability of continuous operation of the device.

[0010] Furthermore, the track is equipped with a patient bed brake contact and a CT bed brake contact on the inner walls at both ends, a patient bed deceleration contact is installed on the inner wall of the track on the side of the patient bed brake contact, and a CT bed deceleration contact is installed on the inner wall of the track on the side of the CT bed brake contact.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that, corresponding to the patient bed position and the CT bed position, a patient bed position brake contact (CT bed position brake contact) and a patient bed position deceleration contact (CT bed position deceleration contact) are respectively set on the inner sidewalls at both ends of the track. This forms a graded control of deceleration first and then braking. When the machine head approaches the target position (patient bed position or CT bed position), the patient bed position deceleration contact (CT bed position deceleration contact) is triggered first to reduce the movement speed of the machine head, and then the patient bed position brake contact (CT bed position brake contact) is triggered to achieve precise locking. This avoids overshooting the position or sudden stopping and shaking due to inertia, ensuring the safety and positioning accuracy of patient transfer.

[0012] Furthermore, the bed braking contact and the CT bed braking contact are double-sided magnets, while the bed deceleration contact and the CT bed deceleration contact are single-sided magnets. The magnetic field of the bed deceleration contact is strong at the end near the bed braking contact and weak at the end near the CT bed braking contact. The magnetic field of the CT bed deceleration contact is strong at the end near the CT bed braking contact and weak at the end near the bed braking contact.

[0013] The beneficial effects of adopting the above-mentioned further solutions are that the brake contacts for the hospital bed and the CT bed use double-sided magnets, ensuring that the brakes can be triggered whenever the machine head approaches the target point from any direction, avoiding positioning failures due to directional issues; the deceleration contacts for the hospital bed and the CT bed use single-sided magnets, and the magnetic field strength increases from the direction away from the target point to the direction of approach (e.g., the magnetic field is stronger at the end of the hospital bed deceleration contact near the hospital bed and weaker at the end of the CT bed deceleration contact, and vice versa). By using the difference in magnetic field strength, deceleration is triggered only when moving towards the target point, and deceleration is not triggered when moving in the opposite direction due to the weak magnetic field, thus avoiding the problem of accidental deceleration during bidirectional movement.

[0014] Furthermore, a Hall sensor is installed inside one of the rollers.

[0015] The beneficial effects of adopting the above-mentioned further solution are that the Hall sensor is integrated inside the roller and moves synchronously with the roller, making it closer to the bed brake contact, bed deceleration contact, CT bed brake contact and CT bed deceleration contact on the inside of the track and the relative position is more stable, thereby improving the sensitivity and accuracy of magnetic field detection; the rolling contact between the roller and the track ensures that the Hall sensor always detects along the track path, reducing signal fluctuations caused by machine head shaking and ensuring the accuracy of deceleration and braking triggering.

[0016] Furthermore, the braking component includes a mounting base, the outer walls of which are fixedly connected to the inner walls of the track on both sides. An electromagnet is installed inside the mounting base, and a friction block is provided below the mounting base. The electromagnet and the friction block are magnetically connected. Sliding cavities are provided inside the four corners of the mounting base, and a light rod is slidably arranged in each of the four sliding cavities. A spring is installed at one end of the light rod, and the end of the spring away from the light rod is fixedly connected to the inner wall of the sliding cavity. The end of the light rod away from the spring is fixedly connected to the outer wall of the friction block.

[0017] The beneficial effects of adopting the above-mentioned further solution are that when the electromagnet is energized, it attracts the friction block and compresses the spring, so that the friction block separates from the roller and does not affect the normal sliding of the machine head. When the electromagnet is de-energized, the spring pushes the friction block to make close contact with the roller, and brakes quickly through friction, with rapid response and reliable braking. The smooth rod cooperates with the sliding cavity to limit the movement trajectory of the friction block and avoid braking failure caused by the friction block deflection during braking.

[0018] Furthermore, the length of the light rod is greater than the displacement distance of the friction block, and the bottom surface of the friction block mates with the roller and the outer wall of the machine head.

[0019] The beneficial effects of adopting the above-mentioned further solution are that the length of the smooth rod is greater than the displacement distance of the friction block, ensuring that the friction block is always in the sliding cavity during the braking process, avoiding structural failure caused by derailment; the bottom surface of the friction block cooperates with the roller and the outer wall of the machine head to increase the friction contact area and improve the braking friction force.

[0020] Furthermore, the track is made of aviation aluminum alloy or stainless steel, the longitudinal section of the track is H-shaped, the inner bottom surface of the track is provided with a groove, and the protrusion slides in the groove.

[0021] The advantages of adopting the above-mentioned further solutions are that the rails made of aviation aluminum alloy or stainless steel have strong load-bearing capacity and can reduce the installation load; the H-shaped cross-section rails provide stable sliding guidance for the nose, and the slide grooves limit the displacement of the cams, preventing the nose from derailing and ensuring operational safety.

[0022] Furthermore, the machine head is equipped with a controller, which is electrically connected to the dual-axis motor via a motor driver, and the controller's ADC interface is electrically connected to a Hall sensor; the controller is electrically connected to an electromagnet via a relay; the controller is electrically connected to an electric push rod; the controller receives the magnetic field strength signal transmitted by the Hall sensor, and controls the rotation speed of the dual-axis motor, the on / off state of the electromagnet, and the extension and retraction of the electric push rod according to the signal strength.

[0023] The beneficial effects of adopting the above-mentioned further solution are that the controller, as the core, receives and analyzes the magnetic field signal from the Hall sensor, controls the speed of the dual-axis motor through the motor driver to achieve deceleration, controls the on and off of the electromagnet through the relay to achieve braking, and directly controls the extension and retraction of the electric push rod to achieve lifting and lowering; all components are connected by wires to ensure real-time and reliable signal transmission, avoid the risk of delay or interference in wireless communication, and ensure the safety of transferring critically ill patients.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: This ceiling-track type lifting and moving device for critically ill patients hangs the straps of a medical sling on a hook, and uses the extension and retraction of the telescopic end of an electric push rod to complete the patient's ascent. A dual-axis motor drives two rollers to rotate synchronously, ensuring the machine head slides smoothly along the track, realizing the lifting and moving of critically ill patients for CT scans. When the machine head moves the lifting assembly from the ward bed position to the CT bed position, it moves high-weight patients from ordinary ward beds to the CT examination bed; the inner walls at both ends of the track correspond to the ward bed positions. For the CT bed location, separate bed braking contacts (CT bed braking contacts) and bed deceleration contacts (CT bed deceleration contacts) are set up to form a graded control system of deceleration first and braking later. When the machine head approaches the target location (patient bed location or CT bed location), the bed deceleration contact (CT bed deceleration contact) is triggered first to reduce the machine head's movement speed, and then the bed braking contact (CT bed braking contact) is triggered to achieve precise locking. This avoids overshooting the location or sudden stopping and shaking due to inertia, ensuring the safety and positioning accuracy of patient transfer. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of a ceiling-rail type lifting and moving device for critically ill patients provided by this utility model; Figure 2 An exploded three-dimensional structural diagram of the lifting component of a ceiling-rail type critical patient lifting and moving device provided by this utility model; Figure 3 A side cross-sectional view of the head unit of a ceiling-mounted lifting and moving device for critically ill patients provided by this utility model; Figure 4 An exploded three-dimensional structural diagram of the braking component of a ceiling-rail type lifting and moving device for critically ill patients provided by this utility model; Figure 5 This is a partial top cross-sectional structural diagram of a ceiling-mounted lifting and moving device for critically ill patients provided by this utility model.

[0026] In the diagram: 1. Connector; 2. Ceiling rail assembly; 21. Rail; 22. Head unit; 23. Dual-axis motor; 24. Roller; 25. Hall sensor; 26. Bed brake contact; 27. Bed deceleration contact; 28. CT bed brake contact; 29. ​​CT bed deceleration contact; 210. Slide rail; 211. Protruding seat; 3. Lifting assembly; 31. Recessed seat; 32. Electric push rod; 33. Support arm; 34. Hook; 4. Brake component; 41. Mounting base; 42. Electromagnet; 43. Friction block; 44. Smooth rod; 45. Spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 This utility model provides a technical solution: a ceiling-mounted lifting and moving device for critically ill patients, comprising two connecting parts 1, with a ceiling-mounted assembly 2 between the two connecting parts 1. The ceiling-mounted assembly 2 includes a track 21, with both ends of the track 21 fixedly connected to the outer walls of the two connecting parts 1 respectively. A machine head 22 is slidably mounted inside the track 21, and a lifting assembly 3 is mounted at the bottom end of the machine head 22. Brakes 4 are mounted inside both ends of the track 21. The lifting assembly 3 includes a recess 31, with an electric push rod 32 welded to the bottom end of the recess 31. A support arm 33 is welded to the telescopic end of the electric push rod 32, and hooks 34 are installed on both sides of the support arm 33. A protrusion 211 is mounted at the bottom end of the machine head 22. The seat 211 and the recessed seat 31 are inserted together, and the convex seat 211 and the recessed seat 31 are connected by bolts. The machine head 22 is equipped with a dual-axis motor 23. Both output ends of the dual-axis motor 23 extend through the machine head 22 to the outside. Rollers 24 are fixedly installed on the two output ends of the dual-axis motor 23. The speed and direction of the two output ends of the dual-axis motor 23 are the same. A heat sink is embedded on one side of the outer wall of the machine head 22. The sling of the medical sling is hung on the hook 34. The extension and retraction of the telescopic end of the electric push rod 32 is used to complete the upward movement of the patient. The dual-axis motor 23 drives the two rollers 24 to rotate synchronously, ensuring that the machine head 22 slides smoothly along the track 21 and slides stably from the patient bed to the CT bed.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-5This utility model provides a technical solution: A bed brake contact 26 and a CT bed brake contact 28 are respectively installed on the inner walls of the track 21 at both ends. A bed deceleration contact 27 is installed on the inner wall of the track 21 on the side of the bed brake contact 26, and a CT bed deceleration contact 29 is installed on the inner wall of the track 21 on the side of the CT bed brake contact 28. The bed brake contact 26 and the CT bed brake contact 28 are double-sided magnets, while the bed deceleration contact 27 and the CT bed deceleration contact 29 are single-sided magnets. The magnetic field of the bed deceleration contact 27 is strong at the end near the bed brake contact 26 and weak at the end near the CT bed brake contact 28. The magnetic field of the CT bed deceleration contact 29 is strong at the end near the CT bed brake contact 28. The magnetic field of the contact 29 is weak at the end near the bed brake contact 26. A Hall sensor 25 is installed inside one of the rollers 24. When the head assembly 22 moves to the vicinity of the CT bed deceleration contact 29, since the CT bed deceleration contact 29 is a single-sided magnet and the magnetic field strength increases along the direction of the CT bed brake contact 28, the Hall sensor 25 in the roller 24 will detect the gradually increasing magnetic field as the head 22 approaches. When the magnetic field strength exceeds the low-speed trigger threshold preset by the controller, the controller reduces the speed of the dual-axis motor 23 through the motor driver, so that the head 22 decelerates and approaches the CT bed position. When the head 22 moves in the opposite direction and passes the CT bed deceleration contact 29, the magnetic field strength decreases and does not exceed the threshold, so deceleration is not triggered. This achieves precise deceleration control when moving towards the CT bed position and prevents accidental touch when moving in the opposite direction.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5This utility model provides a technical solution: the braking component 4 includes a mounting base 41, the outer walls of the mounting base 41 are fixedly connected to the inner walls of the track 21 on both sides, an electromagnet 42 is installed inside the mounting base 41, a friction block 43 is provided below the mounting base 41, the electromagnet 42 and the friction block 43 are magnetically connected, a sliding cavity is provided inside each of the four corners of the mounting base 41, a guide rod 44 is slidably arranged in each of the four sliding cavities, a spring 45 is installed at one end of the guide rod 44, the end of the spring 45 away from the guide rod 44 is fixedly connected to the inner wall of the sliding cavity, and the end of the guide rod 44 away from the spring 45 is fixedly connected to the outer wall of the friction block 43, the length of the guide rod 44 is greater than the displacement distance of the friction block 43, the bottom surface of the friction block 43 cooperates with the outer wall of the roller 24 and the machine head 22, the track 21 is made of aviation aluminum alloy or stainless steel, the longitudinal section of the track 21 is H-shaped, and a groove is provided on the inner bottom surface of the track 21. 210, the boss 211 slides in the slide groove 210; when the machine head 22 does not need to be braked, the electromagnet 42 is energized to generate magnetic force, attracting the friction block 43 to compress the spring 45 upward, and the guide rod 44 moves upward along the sliding cavity with the friction block 43. At this time, the friction block 43 separates from the roller 24 and the outer wall of the machine head 22, without affecting the normal movement of the machine head 22; when the machine head 22 moves to the target position, such as the CT bed position, the Hall sensor 25 detects the strong magnetic field signal of the CT bed position brake contact 28, and transmits the magnetic field strength signal to the ADC interface of the controller. After the controller analyzes the signal, it determines that the brake needs to be triggered, and then controls the electromagnet 42 to be de-energized through the relay. At this time, the magnetic force of the electromagnet 42 disappears, the spring 45 resets and pushes the friction block 43 to move downward, and the guide rod 44 extends synchronously along the sliding cavity, so that the bottom surface of the friction block 43 is in close contact with the roller 24 and the outer wall of the machine head 22, and the machine head 22 is braked quickly by friction, achieving precise locking.

[0033] Specifically, the working principle of this type of ceiling-mounted critical patient lifting and moving device is as follows: During use, expansion bolts are used to fix two connecting parts 1 to the load-bearing structure of the CT room ceiling, positioning the track 21 between the CT bed location and the preset location of the patient bed. The patient bed is moved outside the CT room, and medical staff place the patient in a medical sling. The controller activates the electric push rod 32, extending its telescopic end to lower the support arm 33, hooking the sling of the medical sling onto the hooks 34 on both sides of the support arm 33. The controller then activates the electric push rod 32 again, retracting its telescopic end to raise the support arm 33, completing the patient lifting and lowering adjustment. The controller controls the dual-axis motor 23. The machine head 22 moves smoothly along the slide groove 210 of the track 21, driving two rollers 24 to rotate synchronously. When the machine head 22 moves from the patient bed position to the CT bed position, it passes the deceleration contact 27 at the patient bed position. Because the direction of movement is opposite to the direction of magnetic field enhancement of the contact, the signal detected by the Hall sensor 25 does not reach the threshold, and the machine head 22 maintains a normal speed. When it approaches the deceleration contact 29 at the CT bed position, the magnetic field strength detected by the Hall sensor 25 gradually increases as the direction of movement is consistent with the direction of magnetic field enhancement. After exceeding the low speed threshold, the controller reduces the speed of the dual-axis motor 23 through the motor driver, and the machine head 22 decelerates and approaches. When it reaches the CT bed position, the Hall sensor... Sensor 25 detects a strong magnetic field signal from the CT bed brake contact 28. The controller immediately de-energizes the electromagnet 42 of the brake 4 via a relay. Spring 45 pushes the friction block 43 into close contact with the roller 24 and the outer wall of the machine head 22, achieving rapid braking and precise locking through friction. After a series of operations are completed, the machine head 22 moves in the opposite direction from the CT bed position to the patient bed position. When it passes the CT bed deceleration contact 29, because the direction of movement of the machine head 22 is opposite to the direction of magnetic field enhancement of the contact, the signal detected by the Hall sensor 25 does not reach the threshold, and the machine head 22 maintains normal speed. When the head 22 approaches the deceleration contact 27 of the hospital bed, the magnetic field strength detected by the Hall sensor 25 gradually increases as the movement direction is consistent with the direction of magnetic field enhancement. After exceeding the low speed threshold, the controller reduces the speed of the dual-axis motor 23 through the motor driver, and the head 22 decelerates and approaches. When it reaches the hospital bed position, the Hall sensor 25 detects the strong magnetic field signal of the bed brake contact 26. The controller immediately controls the electromagnet 42 of the corresponding brake 4 to be de-energized through the relay. The spring 45 pushes the friction block 43 to make close contact with the roller 24 and the outer wall of the head 22, and achieves precise locking by rapid braking through friction. Throughout the process, the heat sink dissipates heat for the dual-axis motor 23.

[0034] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. Furthermore, since this application is mainly used to protect mechanical devices, the control methods and circuit connections will not be explained in detail in this application.

Claims

1. A ceiling-rail type lifting and moving device for critically ill patients, characterized in that, The device includes two connectors (1), and a ceiling track assembly (2) is provided between the two connectors (1). The ceiling track assembly (2) includes a track (21). The two ends of the track (21) are fixedly connected to the outer walls of the two connectors (1). A machine head (22) is slidably provided inside the track (21). A lifting assembly (3) is provided at the bottom end of the machine head (22). Brakes (4) are provided inside both ends of the track (21). The lifting assembly (3) includes a recess (31). An electric push rod (32) is welded to the bottom end of the recess (31). A support arm (33) is welded to the telescopic end of the electric push rod (32). Hooks (34) are installed on both sides of the support arm (33). A boss (211) is installed at the bottom end of the machine head (22). The boss (211) and the recess (31) are inserted into each other and connected by bolts.

2. The overhead track type lifting and moving device for critically ill patients according to claim 1, characterized in that, The machine head (22) is equipped with a dual-axis motor (23). Both output ends of the dual-axis motor (23) extend through the machine head (22) to the outside. Rollers (24) are fixedly installed on the two output ends of the dual-axis motor (23). The rotation speed and direction of the two output ends of the dual-axis motor (23) are the same. A heat sink is embedded on one side of the outer wall of the machine head (22).

3. The overhead track type lifting and moving device for critically ill patients according to claim 2, characterized in that, The track (21) has a bed brake contact (26) and a CT bed brake contact (28) installed on the inner wall at both ends, and a bed deceleration contact (27) installed on the inner wall on the side of the bed brake contact (26), and a CT bed deceleration contact (29) installed on the inner wall on the side of the CT bed brake contact (28).

4. A ceiling-mounted lifting and moving device for critically ill patients according to claim 3, characterized in that, The bed brake contact (26) and CT bed brake contact (28) are double-sided magnets, and the bed deceleration contact (27) and CT bed deceleration contact (29) are single-sided magnets. The magnetic field of the bed deceleration contact (27) is strong at the end near the bed brake contact (26) and weak at the end near the CT bed brake contact (28). The magnetic field of the CT bed deceleration contact (29) is strong at the end near the CT bed brake contact (28) and weak at the end near the bed brake contact (26).

5. A ceiling-mounted lifting and moving device for critically ill patients according to claim 4, characterized in that, One of the rollers (24) has a Hall sensor (25) installed inside.

6. A ceiling-mounted lifting and moving device for critically ill patients according to claim 1, characterized in that, The braking component (4) includes a mounting base (41). The outer walls of the mounting base (41) are fixedly connected to the inner walls of the track (21). An electromagnet (42) is installed inside the mounting base (41). A friction block (43) is provided below the mounting base (41). The electromagnet (42) and the friction block (43) are magnetically connected. A sliding cavity is provided inside each of the four corners of the mounting base (41). A light rod (44) is slidably arranged in each of the four sliding cavities. A spring (45) is installed at one end of the light rod (44). The end of the spring (45) away from the light rod (44) is fixedly connected to the inner wall of the sliding cavity. The end of the light rod (44) away from the spring (45) is fixedly connected to the outer wall of the friction block (43).

7. A ceiling-mounted lifting and moving device for critically ill patients according to claim 6, characterized in that, The length of the light rod (44) is greater than the displacement distance of the friction block (43), and the bottom surface of the friction block (43) is in contact with the outer wall of the roller (24) and the machine head (22).

8. A ceiling-mounted lifting and moving device for critically ill patients according to claim 7, characterized in that, The track (21) is made of aviation aluminum alloy or stainless steel. The longitudinal section of the track (21) is H-shaped. The inner bottom surface of the track (21) is provided with a groove (210). The boss (211) slides in the groove (210).

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