Medical lathe with automatic transferring function
By designing a bed-passing mechanism and a braking mechanism on the medical lathe, and using electric push rods and motor drives, combined with the friction between the brake pads and the rotating shaft, the problems of heavy burden on medical staff and deviation during the transfer process of existing medical lathes have been solved, achieving fast, stable and safe patient transfer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WOMEN & CHILDRENS MEDICAL CENTER AFFILIATED WITH GUANGZHOU MEDICAL UNIVERSITY
- Filing Date
- 2025-03-21
- Publication Date
- 2026-04-14
AI Technical Summary
Existing medical trolleys with automatic bed transfer functions lack stable braking devices when transporting patients, requiring medical staff to exert force to prevent them from veering off course, increasing their burden and posing a risk of secondary injury.
A medical lathe with automatic patient transfer function was designed, including a transfer mechanism and a braking mechanism. Through the cooperation of the moving plate and the transfer belt, the patient transfer is achieved quickly and smoothly by using electric push rods and motor drive, combined with the friction between the brake pads and the rotating shaft. The design of limit grooves and limit posts prevents the lathe from deviating.
It enables easy, smooth and fast patient transfer, reduces the burden on medical staff, ensures patient safety, and avoids the risk of the lathe deviating during the transfer process.
Smart Images

Figure CN224112907U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical lathe technology, specifically a medical lathe with automatic bed-crossing function. Background Technology
[0002] Medical trolleys (patient transport equipment) are tools specifically designed for the safe transfer of patients in medical settings. They achieve smooth transfer between different environments such as hospital beds, operating tables, and ambulances through lifting mechanisms or electric drive systems, avoiding secondary injuries to patients during transport. A common method for patient transport involves placing a transport tray under the patient's body, then multiple medical staff working together to slide the tray and patient onto the medical trolley for a smooth transfer. This method places a significant burden on medical staff, hence the development of medical trolleys with automatic transfer functions. Existing medical trolleys with automatic transfer functions mostly consist of a sliding mechanism and a lifting mechanism. During use, the motor drives a connecting rod to deflect, adjusting the height of the bed. When the trolley's bed height is aligned with the hospital bed height, one medical staff member needs to firmly hold the trolley from the outside, while two other medical staff members stand at the front and rear ends to support the trolley and prevent it from veering off course. Then, the electric push rod drives the slide plate to move, and the slide plate slowly moves under the patient's body. At the same time, several medical staff lift the patient, who is wrapped in a sheet, to prevent the slide plate from hitting the patient and causing injury. Once the patient is completely on the slide plate, the slide plate returns to its original position with the patient and moves the patient above the lathe. When it is time to move the patient from the lathe to the hospital bed, the slide plate delivers the patient to the bedside. Medical staff lift the patient, who is wrapped in a sheet, and move him towards the hospital bed, achieving a smooth transfer of the patient. Traditional medical lathes with automatic bed transfer functions lack stable braking devices when transferring patients, requiring medical staff to hold them firmly to prevent them from veering off course. When using a slide plate to transfer patients, multiple medical staff need to lift the patient and move him onto the slide plate and the hospital bed. This is a heavy burden for medical staff, and there is a risk of accidentally bumping into the patient and causing secondary injury. Therefore, we propose a medical lathe with an automatic bed transfer function. Utility Model Content
[0003] The technical problem this utility model aims to solve is to overcome the existing defects and provide a medical lathe with an automatic transfer function. It is equipped with a transfer mechanism and a braking mechanism. Through the cooperation of the moving plate and the transfer belt, patients can be transferred easily, smoothly and quickly, reducing the burden on medical staff and ensuring patient safety. The relative movement of two brake pads to the contact shaft avoids the generation of huge frictional forces, thereby effectively braking the medical lathe and preventing it from deviating during the transfer process. This effectively solves the problems in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a medical lathe with automatic bed transfer function, comprising a base, a bed transfer mechanism, and a braking mechanism;
[0005] Base: It has a liftable bed board at the top;
[0006] Bed transfer mechanism: It includes a moving plate, a receiving roller, a guide roller 1, a guide roller 2, and a transfer belt. The moving plate is slidably connected to the upper end of the bed board. The receiving rollers are respectively set at the upper and lower ends of the left side of the base. The guide roller 1 is rotatably connected to the upper left side of the base, and the guide roller 2 is rotatably connected to the right end of the base. The two receiving rollers are connected by a transfer belt. The outer surfaces of the guide roller 1, guide roller 2, and moving plate are all fitted with the outer surface of the transfer belt to provide a basis for the smooth transfer of patients.
[0007] Braking mechanism: Located at the front center of the base, it is equipped with a bed transfer mechanism and a braking mechanism. Through the cooperation of the moving plate and the transfer belt, patients can be transferred easily, smoothly and quickly, reducing the burden on medical staff and ensuring patient safety. The relative movement of the two brake pads contacts the rotating shaft to avoid generating huge friction, thereby effectively braking the medical lathe and preventing it from deviating during the transfer process.
[0008] Furthermore, the bed transfer mechanism also includes an electric push rod and a motor. The electric push rod is respectively located on the left end of the front and rear sides inside the bed board. The right end of the telescopic end of the electric push rod is fixedly connected to the rear end of the moving plate. The motor is located on the left end of the front side of the bed board. The rear end of the output shaft of the motor is fixedly connected to the front end of the longitudinally adjacent receiving roller. The input ends of the electric push rod and the motor are electrically connected to the output end of the microcontroller, providing a stable driving effect for the smooth transfer of patients.
[0009] Furthermore, the braking mechanism includes a rotating shaft, a brake housing, brake pads, limiting posts, limiting blocks, limiting groove one, and limiting groove two. The rotating shaft is rotatably connected to the inner front end of the base. An installation groove is provided in the middle of the front end of the base. The brake housing is disposed inside the installation groove. The brake pads are slidably connected to the front and rear sides inside the brake housing. The inner walls of the brake pads are fitted with the middle of the outer surface of the rotating shaft. The limiting posts are disposed at the rear end of the brake pads. The limiting blocks are slidably connected to the middle of the rear side inside the installation groove. Limiting groove one is respectively opened at the upper and lower ends inside the limiting block. Limiting groove two is opened in the middle of the inside of the limiting block. The outer surfaces of the limiting posts at the upper and lower ends are slidably connected to the inner walls of limiting groove one. The outer surface of the limiting post in the middle is slidably connected to the inner wall of limiting groove two, providing a basis for braking the medical lathe.
[0010] Furthermore, the braking mechanism also includes an electric push rod two, which is located at the middle of the upper front side of the base. The lower end of the telescopic end of the electric push rod two is fixedly connected to the upper end of the limiting block, and the input end of the electric push rod two is electrically connected to the output end of the microcontroller to provide stable drive for the braking of the medical lathe.
[0011] Furthermore, it also includes a moving block, a second motor, and a bidirectional lead screw. The moving block is slidably connected to the front and rear sides of the upper end of the base. A support rod is rotatably connected between the upper end of the moving block and the lower end of the bed board. The bidirectional lead screw is rotatably connected to the upper left side of the base. The middle of the left side of the moving block is threadedly connected to the outer surface of the bidirectional lead screw. The second motor is located on the front left side of the base. The input end of the second motor is electrically connected to the output end of the microcontroller. The rear end of the output shaft of the second motor is fixedly connected to the front end of the bidirectional lead screw, providing a basis for the lifting and lowering of the medical lathe.
[0012] Furthermore, it also includes load-bearing wheels and casters. The load-bearing wheels are respectively located at the left and right ends of the pivot, and the casters are respectively located at the left and right ends of the lower rear side of the base, providing a basis for the movement of the medical lathe.
[0013] Furthermore, it also includes a battery and a microcontroller. The battery is located in the middle of the interior of the base, and the microcontroller is located in the middle of the front side of the bed board. The input terminal of the microcontroller is electrically connected to the output terminal of the battery to provide control for the medical trolley.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This medical lathe with automatic bed-changing function has the following advantages:
[0015] 1. By pushing the electric push rod, the mobile board can be quickly extended under the patient's body. With the release and retraction of the transport belt, the patient can be quickly moved onto the mobile board without having to lift the patient up, reducing the burden on medical staff. Patients can be transferred easily, smoothly and quickly, ensuring patient safety.
[0016] 2. By pressing the limiting post with different inclination directions of limiting groove one and limiting groove two, the two brake pads move synchronously. The huge friction generated by the inner wall of the brake pads and the outer surface of the rotating shaft prevents the rotating shaft from continuing to rotate, thereby preventing the load-bearing wheel from continuing to rotate, realizing the rapid braking of the medical lathe and avoiding the occurrence of the medical lathe running off course during transportation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a cross-sectional structural diagram of the over-bed mechanism and braking mechanism of this utility model;
[0019] Figure 3This is a schematic cross-sectional view of the over-bed mechanism of this utility model;
[0020] Figure 4 This is a cross-sectional structural diagram of the braking mechanism of this utility model.
[0021] In the diagram: 1. Base, 2. Bed board, 3. Transfer mechanism, 31. Moving plate, 32. Receiving roller, 33. Guide roller 1, 34. Guide roller 2, 35. Transfer belt, 36. Electric push rod 1, 37. Motor 1, 4. Braking mechanism, 41. Rotating shaft, 42. Brake housing, 43. Brake pad, 44. Limiting post, 45. Limiting block, 46. Limiting groove 1, 47. Limiting groove 2, 48. Electric push rod 2, 5. Moving block, 6. Support rod, 7. Motor 2, 8. Bidirectional lead screw, 9. Load-bearing wheel, 10. Universal wheel, 11. Battery, 12. Microcontroller. Detailed Implementation
[0022] 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.
[0023] Please see Figure 1-4 This embodiment provides a technical solution: a medical lathe with automatic bed transfer function, including a base 1, a bed transfer mechanism 3 and a braking mechanism 4;
[0024] Base 1: Its upper end is equipped with a height-adjustable bed board 2. Handles are provided at both the front and rear ends of the bed board 2 for moving and holding the medical gurney. A guard plate is located on the middle left side of the bed board 2 for mounting and installing medical equipment. It also includes a moving block 5, a second motor 7, and a bidirectional lead screw 8. The moving block 5 is slidably connected to the front and rear sides of the upper end of base 1. Sliding columns are provided on both the left and right sides of the upper end of base 1, and the moving block 5 is slidably connected between the two sliding columns. A support rod 6 is rotatably connected between the upper end of the moving block 5 and the lower end of the bed board 2. The bidirectional lead screw 8 is rotatably connected to the upper left side of base 1. The inner left middle of the moving block 5 is threadedly connected to the outer surface of the bidirectional lead screw 8. The second motor 7 is located on the front left side of base 1, and its input terminal is electrically connected to the microcontroller 12. At the output end, the rear end of the output shaft of motor 2 7 is fixedly connected to the front end of the bidirectional lead screw 8, providing a basis for the lifting and lowering of the medical lathe. It also includes a load-bearing wheel 9 and a universal wheel 10. The load-bearing wheel 9 is respectively set at the left and right ends of the rotating shaft 41. The load-bearing wheel 9 plays the role of bearing weight and braking. The universal wheel 10 is respectively set at the left and right ends of the lower rear side of the base 1. The universal wheel 10 is a mechanical self-locking universal wheel, which can adjust the movement direction of the medical lathe and provide a basis for the movement of the medical lathe. It also includes a battery 11 and a microcontroller 12. The battery 11 is set in the middle of the interior of the base 1. The battery 11 provides power to the entire medical lathe. The microcontroller 12 is set in the middle of the front side of the bed board 2. The input end of the microcontroller 12 is electrically connected to the output end of the battery 11 to provide control effect for the medical lathe.
[0025] The bed-passing mechanism 3 includes a moving plate 31, a take-up roller 32, a first guide roller 33, a second guide roller 34, and a conveyor belt 35. The moving plate 31 is slidably connected to the upper end of the bed plate 2. Guide columns are provided on both the left and right sides of the bed plate 2. The moving plate 31 is slidably connected between the two guide columns. The right side of the moving plate 31 is a thin plate. The take-up rollers 32 are respectively set at the upper and lower ends of the left side of the base 1. The first guide roller 33 is rotatably connected to the upper left side of the base 1, and the second guide roller 34 is rotatably connected to the right side of the base 1. The two take-up rollers 32 are connected by the conveyor belt 35. The outer surfaces of the first guide roller 33, the second guide roller 34, and the moving plate 31 are all fitted with the outer surface of the conveyor belt 35. The upper end of the conveyor belt 35 is fixedly connected to the surface of the upper take-up roller 32, and the lower end of the conveyor belt 35 is connected to the lower... The surface of the receiving roller 32 is fixedly connected. The guide roller 33 can make the conveyor belt 35 close to the upper part of the moving plate 31. The guide roller 34 can make the conveyor belt 35 close to the lower part of the moving plate 31 when the moving plate 31 is extended, providing a basis for the smooth transfer of the patient. The bed transfer mechanism 3 also includes an electric push rod 36 and a motor 37. The electric push rod 36 is respectively set on the left end of the front and rear sides inside the bed plate 2. The right end of the extension end of the electric push rod 36 is fixedly connected to the rear end of the moving plate 31. The motor 37 is set on the left end of the front side of the bed plate 2. The rear end of the output shaft of the motor 37 is fixedly connected to the front end of the longitudinally adjacent receiving roller 32. The input ends of the electric push rod 36 and the motor 37 are electrically connected to the output end of the single-chip microcomputer 12, providing a stable driving effect for the smooth transfer of the patient.
[0026] Braking mechanism 4: Located at the front center of base 1, braking mechanism 4 includes a rotating shaft 41, brake housing 42, brake pads 43, limiting posts 44, limiting blocks 45, limiting groove 1 46, and limiting groove 2 47. The rotating shaft 41 is rotatably connected to the front end of the base 1. A mounting groove is provided in the middle of the front end of base 1. The brake housing 42 is located inside the mounting groove. The brake pads 43 are slidably connected to the front and rear sides of the brake housing 42. The inner walls of the brake pads 43 are fitted with the middle of the outer surface of the rotating shaft 41. The rotating shaft 41 passes through the middle of the interior of the brake housing 42. The middle of the outer surface of the rotating shaft 41 is located between the two brake pads 43. The inner walls of the brake pads 43 are made of asbestos material, which has a high coefficient of friction. The limiting posts 44 are all located at the rear end of the brake pads 43. The limiting blocks 45 are slidably connected to the middle of the rear side of the mounting groove. Limiting groove 1 46 is opened at the upper and lower ends of the limiting block 45. Limiting groove 2 47 is opened at the middle of the limiting block 45. The outer surfaces of the upper and lower limit posts 44 in the middle are slidably connected to the inner wall of the first limit groove 46, and the outer surface of the middle limit post 44 is slidably connected to the inner wall of the second limit groove 47, providing a basis for the braking of the medical lathe. The braking mechanism 4 also includes an electric push rod 48, which is located in the middle of the upper front side of the base 1. The lower end of the telescopic end of the electric push rod 48 is fixedly connected to the upper end of the limit block 45. The input end of the electric push rod 48 is electrically connected to the output end of the microcontroller 12, providing a stable drive for the braking of the medical lathe. It is equipped with a bed transfer mechanism 3 and a braking mechanism 4. Through the cooperation of the moving plate 31 and the transfer belt 35, patients can be transferred easily, smoothly and quickly, reducing the burden on medical staff and ensuring patient safety. The relative movement of the two brake pads 43 to contact the rotating shaft 41 avoids the generation of huge friction, thereby forming an effective brake on the medical lathe and preventing the medical lathe from deviating during the transfer.
[0027] The working principle of the medical lathe with automatic bed-transfer function provided by this utility model is as follows: When using the medical lathe with automatic bed-transfer function to transfer patients, after moving the medical lathe to the side of the bed, in order to prevent the medical lathe from deviating, it is necessary to brake the medical lathe. The microcontroller 12 controls the operation of the electric push rod 48. The telescopic end of the electric push rod 48 moves downward, driving the limiting block 45 to move downward. The limiting groove 46 and the limiting groove 47 squeeze the internal limiting post 44. Since the end of the limiting groove 46 that contacts the limiting post 44 is tilted forward, and the end of the limiting groove 47 that contacts the limiting post 44 is tilted backward, as the limiting block 45 moves downward, the limiting groove 46 squeezes the limiting post 44, causing the front brake pad 43 to move backward. 7. The compression limit post 44 drives the rear brake pad 43 to move forward until the inner wall of the brake pad is in contact with the outer surface of the rotating shaft 41. At this time, the huge friction force prevents the rotating shaft 41 from continuing to rotate, the load wheel 9 cannot rotate, the medical lathe is braked, and the microcontroller 12 controls the second motor 7 to operate. When the second motor 7 rotates forward, the double-acting screw 8 rotates forward, driving the two moving blocks 5 to move outward, and the support rod 6 also deflects outward, and the bed board 2 moves upward. When the second motor 7 rotates in reverse, the double-acting screw 8 rotates in reverse, driving the two moving blocks 5 to move inward, and the support rod 6 also deflects inward, and the bed board 2 moves downward until the moving plate 31 is flush with the bed. Then, the microcontroller 12 controls the electric push rod 36 and the upper motor 37 to work simultaneously. The telescopic end of the electric push rod 36 extends and drives the moving plate 31 to move inward. As the hospital bed moves, the upper motor 37 drives the upper take-up roller 32 to reverse, releasing the conveyor belt 35 wrapped around its surface. This provides clearance for the extension of the moving plate 31. Since the moving plate 31 also moves simultaneously, and with the guidance and limiting of guide rollers 33 and 34, the conveyor belt 35, released by the upper take-up roller 32, remains taut. At this point, medical staff gently lift the side of the patient's body closest to the moving plate 31. When the front end of the moving plate 31, carrying the conveyor belt 35, extends halfway under the patient's body, the patient is lowered. Half of the patient's body is now above the moving plate 31 and the conveyor belt 35. At this time, the microcontroller 12 controls the electric push rod 36 and the upper motor 37 to operate. The telescopic end of 6 retracts, causing the moving plate 31 to move to the left. Simultaneously, the upper motor 37 rotates forward, and the upper take-up roller 32 winds and retracts the transfer belt 35. The transfer belt 35 simultaneously moves the patient to the left, and with the help of medical staff, the patient can be quickly and smoothly moved above the moving plate 31 and the transfer belt 35. When the moving plate 31 returns to its original position, the patient is transferred to the medical gurney. Then, the microcontroller 12 controls the electric push rod 48 to release the brake. After the medical gurney reaches the designated location, the microcontroller 12 controls the electric push rod 48 to engage the brake, and the moving plate 31 moves to the right. At the same time, the upper take-up roller 32 also reverses, releasing the transfer belt 35 and moving the patient to the side of the bed. At this point, the upper take-up roller 32 stops rotating.The microcontroller 12 controls the lower motor 37 to rotate forward, winding the conveyor belt 35 around the surface of the lower take-up roller 32. As the conveyor belt 35 moves to the right, the patient is also moved to the bed, achieving stable patient transport.
[0028] It is worth noting that the microcontroller 12 disclosed in the above embodiments is a microcontroller, the electric actuator 36 and the electric actuator 48 are both SY-A04B electric actuators, the motor 37 is a Z2 motor, and the motor 7 is a YPT motor. The microcontroller 12 controls the operation of the electric actuator 36, the motor 37, the electric actuator 48 and the motor 7 using methods commonly used in the prior art.
[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A medical lathe with automatic bed transfer function, characterized in that: It includes a base (1), a bed-crossing mechanism (3), and a braking mechanism (4); Base (1): Its upper end is equipped with a liftable bed board (2); The bed-passing mechanism (3) includes a moving plate (31), a receiving roller (32), a guide roller one (33), a guide roller two (34), and a conveyor belt (35). The moving plate (31) is slidably connected to the upper end of the bed plate (2). The receiving rollers (32) are respectively set at the upper and lower ends of the left side of the base (1). The guide roller one (33) is rotatably connected to the upper left side of the base (1). The guide roller two (34) is rotatably connected to the right end of the base (1). The two receiving rollers (32) are connected by the conveyor belt (35). The outer surfaces of the guide roller one (33), the guide roller two (34), and the moving plate (31) are all fitted with the outer surface of the conveyor belt (35). Braking mechanism (4): It is located at the front center of the base (1).
2. A medical lathe with automatic bed transfer function according to claim 1, characterized in that: It also includes a battery (11) and a microcontroller (12). The battery (11) is located in the middle of the interior of the base (1), and the microcontroller (12) is located in the middle of the front side of the bed board (2). The input terminal of the microcontroller (12) is electrically connected to the output terminal of the battery (11).
3. A medical lathe with automatic bed transfer function according to claim 2, characterized in that: The bed-passing mechanism (3) also includes an electric push rod (36) and a motor (37). The electric push rod (36) is respectively located on the left side of the front and rear sides inside the bed plate (2). The right side of the telescopic end of the electric push rod (36) is fixedly connected to the rear end of the moving plate (31). The motor (37) is located on the left side of the front side of the bed plate (2). The rear end of the output shaft of the motor (37) is fixedly connected to the front end of the longitudinally adjacent receiving roller (32). The input ends of the electric push rod (36) and the motor (37) are electrically connected to the output end of the microcontroller (12).
4. A medical lathe with automatic bed transfer function according to claim 2, characterized in that: The braking mechanism (4) includes a rotating shaft (41), a brake housing (42), brake pads (43), a limiting post (44), a limiting block (45), a first limiting groove (46), and a second limiting groove (47). The rotating shaft (41) is rotatably connected to the inner front end of the base (1). An installation groove is provided in the middle of the front end of the base (1). The brake housing (42) is disposed inside the installation groove. The brake pads (43) are slidably connected to the front and rear sides inside the brake housing (42). The inner walls of the brake pads (43) are all connected to the rotating shaft (41). The outer surface of the device is fitted in the middle. The limiting posts (44) are all located at the rear end of the brake pad (43). The limiting block (45) is slidably connected to the middle of the rear side of the mounting groove. The first limiting groove (46) is opened at the upper and lower ends of the limiting block (45). The second limiting groove (47) is opened in the middle of the limiting block (45). The outer surfaces of the limiting posts (44) at the upper and lower ends are slidably connected to the inner wall of the first limiting groove (46). The outer surface of the limiting post (44) in the middle is slidably connected to the inner wall of the second limiting groove (47).
5. A medical lathe with automatic bed transfer function according to claim 4, characterized in that: The braking mechanism (4) also includes an electric push rod two (48), which is located at the middle of the upper front side of the base (1). The lower end of the telescopic end of the electric push rod two (48) is fixedly connected to the upper end of the limit block (45), and the input end of the electric push rod two (48) is electrically connected to the output end of the microcontroller (12).
6. A medical lathe with automatic bed transfer function according to claim 2, characterized in that: It also includes a movable block (5), a second motor (7) and a bidirectional lead screw (8). The movable block (5) is slidably connected to the front and rear sides of the upper end of the base (1). The upper end of the movable block (5) and the lower end of the bed board (2) are rotatably connected to a support rod (6). The bidirectional lead screw (8) is rotatably connected to the left side of the upper end of the base (1). The middle of the left side of the movable block (5) is threadedly connected to the outer surface of the bidirectional lead screw (8). The second motor (7) is located on the left side of the front end of the base (1). The input end of the second motor (7) is electrically connected to the output end of the microcontroller (12). The rear end of the output shaft of the second motor (7) is fixedly connected to the front end of the bidirectional lead screw (8).
7. A medical lathe with automatic bed transfer function according to claim 1, characterized in that: It also includes load-bearing wheels (9) and casters (10). The load-bearing wheels (9) are respectively located at the left and right ends of the pivot (41), and the casters (10) are respectively located at the left and right ends of the lower rear side of the base (1).