Medical transfer bed

Abstract

The present invention discloses a medical transfer bed, which includes a bed plate part, a mobile driving mechanism and a transmission mechanism. The bed plate part includes a supporting part and a mobile part, and the mobile driving mechanism drives the mobile part to extend or reset relative to the supporting part. The mobile part includes a mobile bed plate, a bed cloth and a cloth rolling shaft, and the cloth rolling shaft is connected to the bed cloth so as to drive the bed cloth to move. The transmission mechanism includes two racks, a transmission shaft and a clutch mechanism, and a first and a second transmission gear are respectively arranged at both ends of the transmission shaft. The clutch mechanism is used to control and select the cloth rolling shaft and the first transmission gear to be in a closed state to drive the cloth rolling shaft to rotate forward, or the cloth rolling shaft and the second transmission gear are in a closed state to drive the cloth rolling shaft to rotate reversely, or the cloth rolling shaft and the first and second transmission gears are both in a separated state. It produces the following technical effects: the mobile driving mechanism can drive the mobile bed plate to move or retract, drive the cloth rolling shaft to rotate, and drive the bed cloth to move.

Description

Technical Field

[0001] The invention relates to medical equipment, in particular to a medical transfer bed. Background Art

[0002] In the field of medical care, the problem of transporting bedridden patients is often encountered, such as transferring bedridden patients from the ward to the operating room or from the operating room to the ward, especially for the transport of comatose, seriously injured and paralyzed patients. At present, the traditional transport method is manual transport, which will cause a large change in the patient's body position during the transport process. Not only is the labor intensity of medical staff high, but it may also cause secondary injuries to the patient, causing unnecessary pain to the patient. In response to this situation, Chinese invention patent application CN200610056947.X discloses a new type of operating bed that can automatically receive and deliver patients. The operating bed adopts an extendable and retractable bed frame, which cooperates with the rotation of the conveyor belt on the bed frame to receive the patient from the bed to the transfer bed or send the patient from the transfer bed back to the bed. It has the following shortcomings: 1. The existing patient transfer bed needs to be driven by multiple driving motors, which has high cost and energy consumption; 2. After the moving bed board of the existing patient transfer bed is inserted into the patient's back, the moving bed board and the conveyor belt transfer the patient to the bed board by friction. This process will cause great friction to the patient and is not suitable for patients with back injuries; 3. In the process of picking up and sending people on the moving bed board, the lower surface of the rotating conveyor belt will contact the bed sheet on the bed, which is easy to roll up the bed sheet, causing failure in picking up and sending patients. Summary of the invention

[0003] The present invention provides a medical transfer bed, which overcomes the shortcomings of the medical transfer bed in the background art.

[0004] One of the technical solutions adopted by the present invention to solve its technical problem is:

[0005] A medical transfer bed comprises a bed plate part and a mobile driving mechanism, wherein the bed plate part comprises a supporting part and a mobile part, and the mobile driving mechanism is connected to the mobile part in a transmission manner so as to drive the mobile part to translate, extend or reset relative to the supporting part; the mobile part comprises a mobile bed plate, a bed cloth connected to the mobile bed plate and a cloth rolling shaft mounted on the mobile bed plate so as to be relatively rotatable, and the cloth rolling shaft is connected to the bed cloth so as to drive the bed cloth to move; and further comprises a transmission mechanism, which comprises two racks fixed on the supporting part, a transmission shaft mounted on the mobile bed plate and a clutch mechanism; a first transmission gear and a second transmission gear respectively meshing with the two racks are respectively mounted at both ends of the transmission shaft, and the clutch mechanism is controlled to select the cloth rolling shaft and the first transmission gear to be in a closed state to drive the cloth rolling shaft to rotate forward, or the cloth rolling shaft and the second transmission gear to be in a closed state to drive the cloth rolling shaft to rotate reversely, or the cloth rolling shaft and the first transmission gear and the second transmission gear are both in a closed state.

[0006] In one embodiment: the cloth winding shaft can also move along its own axis relative to the movable part and can move to a first position, an intermediate position and a second position; the cloth winding shaft at the first position is in a engaged state with the first transmission gear and is in a disengaged state with the second transmission gear; the cloth winding shaft at the second position is in a engaged state with the second transmission gear and is in a disengaged state with the first transmission gear; the cloth winding shaft at the intermediate position is in a disengaged state with both the first transmission gear and the second transmission gear.

[0007] In one embodiment: the transmission mechanism includes a rotatable third transmission gear and a fourth transmission gear, the third transmission gear is transmission-connected to the first transmission gear, and the fourth transmission gear is transmission-connected to the second transmission gear; a first clutch is provided between the third transmission gear and the first end of the cloth winding shaft, and a second clutch is provided between the fourth transmission gear and the second end of the cloth winding shaft, when the cloth winding shaft is in the first position, the first clutch is in a closed state and the second clutch is in a disengaged state, when the cloth winding shaft is in the second position, the second clutch is in a closed state and the first clutch is in a disengaged state, and when the cloth winding shaft is in an intermediate position, both the first clutch and the second clutch are in a disengaged state; the clutch mechanism includes the above-mentioned first clutch and the above-mentioned second clutch.

[0008] In one embodiment: a first connecting frame and a second connecting frame are provided under the moving part, the first connecting frame connects the first end of the transmission shaft and the first end of the cloth rolling shaft, and the second connecting frame connects the second end of the transmission shaft and the second end of the cloth rolling shaft.

[0009] In one embodiment: the third transmission gear is meshed with the first transmission gear; the second connecting frame is further provided with a transition gear, the fourth transmission gear is meshed with the transition gear, and the transition gear is meshed with the second transmission gear.

[0010] In one embodiment: the rack is arranged along the moving direction of the movable bed plate, and the cloth rolling shaft and the transmission shaft are parallel and perpendicular to the rack.

[0011] In one embodiment, the transmission shaft is fixedly connected to the movable bed plate, and the first transmission gear and the second transmission gear can both rotate relative to the transmission shaft.

[0012] In one embodiment, the clutch mechanism further comprises a clutch driving mechanism, and the clutch driving mechanism is connected to the cloth rolling shaft so as to drive the cloth rolling shaft to move to a first position, a middle position and a second position.

[0013] In one embodiment: the clutch drive mechanism includes two electromagnetic drivers, which include a main body installed under the movable bed plate, a movable rod connected to the main body, and an elastic body arranged between the movable rod and the main body. The movable rods of the two electromagnetic drivers are connected to the cloth rolling shaft and can be controlled to drive the cloth rolling shaft to move in a preset direction.

[0014] In one embodiment: the front end of the movable bed plate is set to be inclined, and the front end of the movable bed plate is provided with a pre-pressing roller.

[0015] In one embodiment: two rows of transmission rollers are arranged under the movable bed plate, the two rows of transmission rollers are arranged vertically and alternately, and the part of the bed cloth located under the movable bed plate is connected between the two rows of transmission rollers.

[0016] In one embodiment: the mobile driving mechanism includes a motor and a screw-nut mechanism, and the motor is connected to the mobile bed plate through the screw-nut mechanism.

[0017] In one embodiment, the moving part includes a plurality of moving bed plates, and the plurality of moving bed plates are arranged at intervals along the axis of the cloth rolling shaft.

[0018] The second technical solution adopted by the present invention to solve its technical problem is:

[0019] A medical transfer bed comprises a bed plate part and a mobile driving mechanism, wherein the bed plate part comprises a supporting part and a mobile part, and the mobile driving mechanism is connected to the mobile part in a transmission manner so as to drive the mobile part to translate, extend or reset relative to the supporting part; the mobile part comprises a mobile bed plate, a bed cloth connected to the mobile bed plate and a cloth rolling shaft mounted on the mobile bed plate so as to be relatively rotatable, and the cloth rolling shaft is connected to the bed cloth so as to drive the bed cloth to move; and further comprises a transmission mechanism, which comprises two racks fixedly mounted on the supporting part and a clutch mechanism, and is further provided with a first transmission gear and a second transmission gear respectively meshing with the two racks, and the clutch mechanism is controlled to select the cloth rolling shaft and the first transmission gear to be in a closed state to drive the cloth rolling shaft to rotate forward, or the cloth rolling shaft and the second transmission gear to be in a closed state to drive the cloth rolling shaft to rotate reversely, or the cloth rolling shaft and the first transmission gear and the second transmission gear to be in a closed state.

[0020] Compared with the background technology, this technical solution has the following advantages:

[0021] The transmission mechanism includes two racks, a transmission shaft and a clutch mechanism, and the first and second transmission gears are respectively arranged at both ends of the transmission shaft. The clutch mechanism is used to control the cloth rolling shaft and the first transmission gear to be in a closed state to drive the cloth rolling shaft to rotate forward, or the cloth rolling shaft and the second transmission gear are in a closed state to drive the cloth rolling shaft to rotate reversely, or the cloth rolling shaft and the first and second transmission gears are all in a closed state. Therefore, the shortcomings of the background technology are overcome and the following technical effects are produced: first, the mobile driving mechanism can not only drive the mobile bed board to move or retract, but also drive the cloth rolling shaft to rotate, and can drive the bed cloth to move. Single drive can achieve multi-functions, can reduce production costs, simplify structure, have a compact structure, and reduce energy consumption; second, the clutch mechanism can control the cloth rolling shaft to rotate forward, reverse, or not rotate, so as to realize the mobile bed to pick up and send patients, and can realize the function of automatic patient transportation.

[0022] The cloth winding shaft moves to the first position, the middle position and the second position to realize the control of forward rotation, non-rotation or reverse rotation, and the control switching is convenient, the structure is simple and compact, and the stability is high.

[0023] The first connecting frame connects the first end of the transmission shaft and the first end of the cloth winding shaft, and the second connecting frame connects the second end of the transmission shaft and the second end of the cloth winding shaft. The layout is reasonable, the structure is compact, and the assembly is convenient, which improves the stability of clutch control and transmission.

[0024] The transmission shaft is fixedly connected to the movable bed plate, and the first transmission gear and the second transmission gear can rotate relative to the transmission shaft. The structure is simple, the assembly is convenient, and the clutch control and transmission stability are improved.

[0025] A pre-pressing roller is arranged at the front end of the movable bed board. Since the bed cloth does not cover the pre-pressing roller, the pre-pressing roller rolls along with the movement of the bed board. When the movable bed board is extended to the hospital bed, the pre-pressing roller can roll forward to press the bed sheet to prevent the bed sheet from rolling up.

[0026] Two rows of transmission rollers are arranged under the moving bed board, and the part of the bed cloth located under the moving bed board is connected between the two rows of transmission rollers. The equipment is simple, and the bed sheet is prevented from rolling up, and the sliding friction is optimized to rolling friction.

[0027] The moving part comprises a plurality of moving bed plates, which are arranged at intervals along the axis of the cloth rolling shaft, thereby simplifying the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Figure 1 It is a three-dimensional schematic diagram of a medical transfer bed according to a specific implementation method.

[0030] Figure 2 It is one of the three-dimensional schematic diagrams of the transmission mechanism of the bed board part in the specific implementation method.

[0031] Figure 3 This is the second stereoscopic schematic diagram of the transmission mechanism of the bed board part according to the specific implementation method.

[0032] Figure 4 It is the third three-dimensional schematic diagram of the transmission mechanism of the bed board part according to the specific implementation method.

[0033] Figure 5 It is a structural schematic diagram of the transmission mechanism of the bed board part according to a specific implementation method.

[0034] Figure 6 2 is a schematic structural diagram of a first clutch according to a specific implementation manner.

[0035] Figure 7 2 is a schematic diagram of the structure of the second clutch in a specific implementation manner.

[0036] Figure 8 It is a structural schematic diagram of a clutch drive mechanism in a specific implementation manner.

[0037] Fig. 9 It is a schematic diagram of the connection structure of a movable bed board and a bed cloth according to a specific implementation method. DETAILED DESCRIPTION

[0038] Please refer to Figure 1 , a medical transfer bed, comprising a base B, a lifting column C, a bed plate part A and a moving drive mechanism 30. Please refer to Figures 1 to 9 The bed plate part A includes a support part 10 and a moving part 20, and the moving part 20 can be extended horizontally or retracted relative to the support part 10. The base B is provided with a walking wheel B1 for easy movement. The lower end of the lifting column C is fixed on the base B. The support part 10 is fixed on the upper end of the lifting column B so that the lifting of the support part can be controlled by the lifting column B; the moving drive mechanism 30 is connected to the moving part 20 in a transmission manner so as to drive the moving part 20 to extend horizontally or retract relative to the support part 10.

[0039] The moving part 20 includes a plurality of moving bed boards 21, bed cloths 22 connected to the moving bed boards 21, a cloth rolling shaft 23 rotatably mounted on the moving bed boards 21, and a transmission mechanism 24; the plurality of moving bed boards 21 are arranged at intervals along the axis of the cloth rolling shaft 23 so that the plurality of moving bed boards 21 are arranged in a fork-like structure; the cloth rolling shaft 23 is connected to the bed cloth 22 so as to drive the bed cloth 22 to move.

[0040] The transmission mechanism 24 includes two racks 11 fixed to the support part 10, a transmission shaft 241 installed on the moving bed 21, and a clutch mechanism. The racks 11 are arranged along the moving direction of the moving bed 21, and the two racks 11 are arranged at intervals along the axis of the cloth rolling shaft 23; the cloth rolling shaft 23 and the transmission shaft 241 are parallel to and perpendicular to the racks 11.

[0041] The first transmission gear 242 and the second transmission gear 243 are respectively mounted at both ends of the transmission shaft 241, which are respectively engaged with the two racks 11, so that the first transmission gear 242 and the second transmission gear 243 can rotate coaxially and in the same direction when the moving part moves relative to the supporting part. In this specific embodiment: the transmission shaft 241 is fixedly connected to the moving bed plate 21, and the first transmission gear 242 and the second transmission gear 243 are both rotatably connected to the transmission shaft 241. The transmission mechanism 24 also includes a rotatable third transmission gear 244, a fourth transmission gear 245, and a transition gear 246. The third transmission gear 244 is arranged at the first end of the cloth rolling shaft 23, and the fourth transmission gear 245 is arranged at the second end of the cloth rolling shaft 23; the first cloth rolling shaft gear is connected to the first transmission gear 242 in a transmission manner, such as the first cloth rolling shaft gear is meshed with the first transmission gear 242, so that the direction of the third transmission gear 244 is opposite to the direction of the first transmission gear 242; the fourth transmission gear 245 is connected to the second transmission gear 243 in a transmission manner, such as the second transmission gear 243 is meshed with the transition gear 246, and the transition gear 246 is meshed with the fourth transmission gear 245; due to the provision of the transition gear 246, the fourth transmission gear 245 and the second transmission gear have the same direction of rotation, and the following description takes clockwise rotation as an example. If necessary, a transmission stage can also be added between the transmission shaft and the cloth rolling shaft.

[0042] As required, the two ends of the moving part 20 are respectively provided with a first connecting frame 251 and a second connecting frame 252, the first connecting frame 251 connects the first end of the transmission shaft 241 and the first end of the cloth rolling shaft 23, and the second connecting frame 252 connects the second end of the transmission shaft 241 and the second end of the cloth rolling shaft 23. The specific structure is as follows: the first connecting frame 251 includes two first rods and a first fixed rod fixedly connected to the two first rods, one first rod is rotatably connected to the first end of the transmission shaft 241, and the other first rod is rotatably connected to the cloth rolling shaft The first end of the shaft 23 forms a connection that can rotate and move along the axis of the cloth rolling shaft, and the third transmission gear is rotatably connected to the first rod; the second connecting frame 252 includes two second rods and a second fixed rod fixed to the two second rods, one second rod is rotatably connected to the second end of the transmission shaft, and the other second rod and the second end of the cloth rolling shaft 23 form a connection that can rotate and move along the axis of the cloth rolling shaft, the fourth transmission gear is rotatably connected to the second rod, and a convex portion is convexly provided on the second fixed rod, and the transition gear is rotatably connected to the convex portion. If necessary, the transmission shaft can also be omitted, and the first and second transmission gears are rotatably connected to the first and second connecting frames respectively, and the first and second rods are fixed to the movable bed board.

[0043] The cloth-rolling shaft 23 can also move along its own axis relative to the movable part 20 and can move to a first position, an intermediate position and a second position, wherein the intermediate position is between the first position and the second position; a first clutch 247 is provided between the third transmission gear 244 and the first end of the cloth-rolling shaft 23, and a second clutch 248 is provided between the fourth transmission gear 245 and the second end of the cloth-rolling shaft 23. Wherein: 1. When the cloth-rolling shaft 23 is located at the first position, the first clutch 247 is in a closed state and the second clutch 248 is in a closed state, that is, the cloth-rolling shaft 23 and the third transmission gear 244 are in a closed state, the first transmission gear 242 drives the third transmission gear 244 to rotate, and the third transmission gear 244 drives the cloth-rolling shaft 23 to rotate forwardly, and the cloth-rolling shaft 23 and the fourth transmission gear 245 are in a closed state, and the second transmission gear 243 and the fourth transmission gear 245 are idle; 2. When the cloth-rolling shaft 23 is located at the intermediate position, the first clutch 247 and the second clutch 248 are both in a closed state, and the cloth-rolling shaft 23 and the third transmission gear 244, the third transmission gear 244 drive the cloth-rolling shaft 23 to rotate forwardly, and the cloth-rolling shaft 23 and the fourth transmission gear 245 are in a closed state, and the second transmission gear 243 and the fourth transmission gear 245 are idle; The four transmission gears 245 are all in the disengaged state, the first transmission gear 242, the second transmission gear 243, the third transmission gear 244 and the fourth transmission gear 245 are idling, and the cloth-winding shaft 23 does not rotate; 3. When the cloth-winding shaft 23 is in the second position, the second clutch 248 is in the engaged state and the first clutch 247 is in the disengaged state, that is, the cloth-winding shaft and the fourth transmission gear 245 are in the engaged state, the second transmission gear 243 drives the fourth transmission gear to rotate, and the fourth transmission gear 245 drives the cloth-winding shaft 23 to reverse, and the cloth-winding shaft 23 and the third transmission gear 244 are in the disengaged state, and the first transmission gear 242 and the third transmission gear 244 are idling. The above-mentioned forward rotation and reverse rotation are only to illustrate that the two directions are opposite, and the forward rotation can be clockwise rotation or counterclockwise rotation. The structures of the first clutch 247 and the second clutch 248 can be the same, for example, the end faces of the third and fourth transmission gears 244 and 245 are convexly provided with convex portions, and the end of the cloth winding shaft 23 is concavely provided with a supply slot. When the convex portion is inserted into the supply slot, the two are in a meshing state, and the rotation of the fourth transmission gear 245 can drive the cloth winding shaft 23 to rotate. When the convex portion is pulled out of the supply slot, the two are in a disengaged state.

[0044] The clutch mechanism includes a clutch drive mechanism and the above-mentioned first clutch 247 and second clutch 248. The clutch drive mechanism is connected to the cloth rolling shaft 23 so as to drive the cloth rolling shaft 23 to move to the first position, the middle position and the second position. As needed, the clutch drive mechanism may not be provided and the cloth rolling shaft 23 may be moved manually by the operator. In the specific structure: the clutch drive mechanism includes two electromagnetic drivers 249, and the electromagnetic driver 249 includes a main body 2491 fixed under the moving bed plate 21, a movable rod 2492 connected to the main body 2491, and an elastic body 2493 provided between the movable rod 2492 and the main body 2491. A convex ring 231 is provided in the middle of the cloth rolling shaft 23. The two electromagnetic drivers 249 are axially symmetrically arranged on both sides of the convex ring 231, and the movable rods 2492 of the two electromagnetic drivers 249 are in the initial state. They respectively press against the two sides of the convex ring 231, and the cloth-winding shaft 23 is in the middle position; wherein: the electromagnetic driver 249 on the right is controlled to drive the movable rod 2492 to move, and the movable rod 2492 presses against the convex ring 231 to move the cloth-winding shaft 23 to the first position, and at the same time, the elastic body of the second electromagnetic driver is compressed to store energy; when the first electromagnetic driver releases the control, the cloth-winding shaft is reset under the elastic force of the elastic body of the second electromagnetic driver; similarly, the electromagnetic driver 249 on the left is controlled to drive the movable rod 2492 to move, and the cloth-winding shaft 23 is driven to move to the second position. Other clutch drive mechanisms, such as hydraulic mechanisms, can be used as needed, and the piston rod of the hydraulic mechanism can be connected to the cloth-winding shaft in a rotatable but non-sliding manner, and the movement of the cloth-winding shaft is controlled by the hydraulic mechanism.

[0045] In this specific embodiment, the front end of the movable bed plate 21 is set to be inclined, and a pre-pressing roller 213 is provided below the front end of the movable bed plate.

[0046] In this specific embodiment, two rows of transmission rollers 211 are arranged under the movable bed board 21 . The two rows of transmission rollers 211 are arranged vertically and alternately. The part of the bed cloth 22 located under the movable bed board is connected between the two rows of transmission rollers 211 .

[0047] In this specific embodiment, the mobile driving mechanism 30 includes a motor 31 and a screw nut mechanism; the support part 10 is fixed with a guide rail 12, and the movable bed plate 21 can be slidably connected to the guide rail 12. The screw nut mechanism includes a screw 32 and a nut, the screw 32 can be rotatably mounted on a mounting frame 33 fixed to the support part 10, the nut is screwed on the screw, and the nut is fixed to the movable bed plate. The motor drives the screw to drive the screw to rotate, and the screw rotation drives the movable bed plate to move out or retract relative to the support part 10. The cloth rolling shaft 23 is divided into several sections, and each adjacent section is connected by a coupling 232.

[0048] The process of picking up a patient from a hospital bed: 1. Bring the transfer bed close to the hospital bed and adjust the bed surface height of the transfer bed to be flush with the hospital bed; 2. Start the motor 31 of the mobile drive mechanism 30, the lead screw 32 rotates and drives the mobile bed board 21 to extend, and the transmission shaft 241 fixed to the mobile bed board 21 moves forward, driving the first transmission gear 242 and the second transmission gear 243 at both ends of the transmission shaft 241 to roll forward on the racks 11 on both sides of the bed body, driving the third transmission gear 244 to rotate; under the thrust of the electromagnetic clutch 249 on the right, the cloth rolling shaft 23 slides to the left to the first position and meshes with the first clutch 247, and the first transmission gear 242 on the left indirectly meshes with the cloth rolling shaft 23, and the third transmission gear 244 drives the cloth rolling shaft 23 to rotate clockwise, driving the bed cloth 22 along the movable bed board 2 1, and the moving speed of the side of the bed sheet 22 in contact with the patient (the side located on the movable bed board) is the same as the moving speed of the movable bed board 21 but in the opposite direction, so that the bed sheet 22 and the patient's body actually remain relatively still; as the movable bed board 21 moves forward, the patient is completely transferred to the bed sheet 22 on the extended movable bed board 21; 3. The electromagnetic clutches 249 on the left and right are controlled not to work, the cloth rolling shaft 23 is reset to the middle position, the cloth rolling shaft 23 is disengaged from the third and fourth transmission gears 244 and 245, the first and second clutches are in the off state, and the cloth rolling shaft 23 no longer rotates with the movement of the movable bed board; 4. The motor 31 of the movable drive mechanism 30 is reversed, and the lead screw 32 rotates to drive the movable bed board to retract and reset, and the patient is transferred to the transfer bed.

[0049] The process of sending the patient back to the bed: 1. Bring the transfer bed close to the bed and adjust the bed surface height of the transfer bed to be flush with the bed; 2. Start the motor 31 of the mobile drive mechanism 30, the screw 32 rotates to drive the mobile bed board 21 to extend, and the transmission shaft 241 also moves forward, driving the first transmission gear 242 and the second transmission gear 243 to roll forward on the rack 11, controlling the electromagnetic clutches 249 on the left and right to not work, the cloth rolling shaft 23 and the third and fourth transmission gears 244 and 245 are not engaged, the first clutch 247 and the second clutch 248 are in the disengaged state, and the cloth rolling shaft 23 will not rotate with the movement of the mobile bed board 21; 3. When the mobile bed board 21 contacts the bed, the electromagnetic clutch 249 on the left is controlled to work, and the thrust of the electromagnetic clutch 249 on the left Under the action, the cloth rolling shaft 23 slides to the right to the second position and meshes with the second clutch 248, the second transmission gear 243 indirectly meshes with the cloth rolling shaft 23, and the fourth transmission gear 245 drives the cloth rolling shaft 23 to start rotating counterclockwise, and the cloth rolling shaft 23 drives the bed cloth 22 to move in the same direction as the extending direction of the movable bed board 21, and the patient is transferred to the hospital bed under the action of the bed cloth 23; 4. The electromagnetic clutches 249 on the left and right are controlled not to work, the cloth rolling shaft 23 is disengaged from the third and fourth transmission gears 244 and 245, the first and second clutches are in the disengaged state, and the cloth rolling shaft 23 no longer rotates with the movement of the movable bed board 21; 5. The motor 31 of the mobile drive mechanism 30 is reversed, and the screw 32 rotates to drive the movable bed board 21 to retract, and the movable bed board 21 is recovered to the bed body of the transfer bed.

[0050] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A medical transfer bed, comprising a bed plate portion and a mobile driving mechanism, wherein the bed plate portion comprises a supporting portion and a moving portion, wherein the mobile driving mechanism is connected to the moving portion to drive the moving portion to translate, extend or reset relative to the supporting portion; the moving portion comprises a moving bed plate, a bed cloth connected to the moving bed plate, and a cloth rolling shaft mounted on the moving bed plate so as to be relatively rotatable, wherein the cloth rolling shaft is connected to the bed cloth to drive the bed cloth to move; characterized in that: The transmission mechanism also includes two racks fixed on the support part, a transmission shaft installed on the movable bed plate and a clutch mechanism; the two ends of the transmission shaft are respectively provided with a first transmission gear and a second transmission gear meshing with the two racks; the clutch mechanism is used to control and select the cloth-rolling shaft and the first transmission gear to be in a closed state to drive the cloth-rolling shaft to rotate forward, or the cloth-rolling shaft and the second transmission gear to be in a closed state to drive the cloth-rolling shaft to rotate reversely, or the cloth-rolling shaft and the first transmission gear and the second transmission gear to be in a closed state; The cloth-winding shaft can also move along its own axis relative to the movable part, and can move to a first position, an intermediate position, and a second position; the cloth-winding shaft at the first position is in a closed state with the first transmission gear and is in a closed state with the second transmission gear, the cloth-winding shaft at the second position is in a closed state with the second transmission gear and is in a closed state with the first transmission gear, and the cloth-winding shaft at the intermediate position is in a closed state with both the first transmission gear and the second transmission gear; The transmission mechanism comprises a rotatable third transmission gear and a fourth transmission gear, the third transmission gear is transmission-connected to the first transmission gear, and the fourth transmission gear is transmission-connected to the second transmission gear; a first clutch is arranged between the third transmission gear and the first end of the cloth winding shaft, a second clutch is arranged between the fourth transmission gear and the second end of the cloth winding shaft, when the cloth winding shaft is in the first position, the first clutch is in a closed state and the second clutch is in a disengaged state, when the cloth winding shaft is in the second position, the second clutch is in a closed state and the first clutch is in a disengaged state, and when the cloth winding shaft is in the middle position, both the first clutch and the second clutch are in a disengaged state; the clutch mechanism comprises the above-mentioned first clutch and the above-mentioned second clutch; A first connecting frame and a second connecting frame are provided under the moving part, the first connecting frame connects the first end of the transmission shaft and the first end of the cloth rolling shaft, and the second connecting frame connects the second end of the transmission shaft and the second end of the cloth rolling shaft; The third transmission gear is meshed with the first transmission gear; the second connecting frame is also provided with a transition gear, the fourth transmission gear is meshed with the transition gear, and the transition gear is meshed with the second transmission gear; The rack is arranged along the moving direction of the moving bed plate, and the cloth rolling shaft and the transmission shaft are parallel and perpendicular to the rack; The transmission shaft is fixedly connected to the movable bed plate, and the first transmission gear and the second transmission gear can rotate relative to the transmission shaft; The front end of the movable bed plate is set to be inclined, and a pre-pressing roller is provided at the front end of the movable bed plate; two rows of transmission rollers are arranged under the movable bed plate, and the two rows of transmission rollers are arranged up and down and staggered, and the part of the bed cloth located under the movable bed plate is connected between the two rows of transmission rollers.

2. The medical transfer bed according to claim 1, characterized in that: The clutch mechanism also includes a clutch driving mechanism, which is connected to the cloth-winding shaft so as to drive the cloth-winding shaft to move to a first position, a middle position and a second position.

3. The medical transfer bed according to claim 2, characterized in that: The clutch drive mechanism includes two electromagnetic drivers, which include a main body installed under the moving bed plate, a movable rod connected to the main body, and an elastic body arranged between the movable rod and the main body. The movable rods of the two electromagnetic drivers are connected to the cloth rolling shaft and can be controlled to drive the cloth rolling shaft to move in a preset direction.

4. The medical transfer bed according to any one of claims 1 to 3, characterized in that: The mobile driving mechanism comprises a motor and a screw-nut mechanism, and the motor is connected to the mobile bed plate via the screw-nut mechanism.

5. The medical transfer bed according to any one of claims 1 to 3, characterized in that: The moving part comprises a plurality of moving bed plates, and the plurality of moving bed plates are arranged at intervals along the axis of the cloth rolling shaft.

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