Patient transfer mechanism and transfer vehicle

Abstract

The present invention belongs to the technical field of medical equipment, and specifically relates to a patient transfer mechanism and a transfer vehicle. The patient transfer mechanism includes: a panel moving mechanism and a belt rotating mechanism, the panel moving mechanism includes: a panel, a first motor, a first driving sprocket, a first driven sprocket, a first panel driving sprocket, a transmission chain, and the transmission chain is meshed with the first panel driving sprocket for transmission; the belt rotating mechanism includes: a third motor, a second driving sprocket, a first belt driving sprocket, a second belt driving sprocket, a first reel, a second reel, a third belt driving sprocket, a first guide roller, a side roller, and a second guide roller, and the two ends of the transmission belt are respectively wound on the first reel and the second reel, and then successively bypass the first guide roller and the second guide roller, and then wind upward from the bottom of the side roller to the top of the panel. The patient transfer vehicle includes: a walking mechanism, a lifting device and a patient transfer mechanism, and the patient transfer mechanism of the present invention can move in both directions.

Description

[0001] This invention patent application is a divisional application. The application number of the original application is 202010897621.X, the application date is August 31, 2020, and the name of the invention is: A transfer vehicle capable of transporting patients in both directions. Technical Field

[0002] The invention belongs to the technical field of medical equipment, and in particular relates to a patient transfer mechanism and a transfer vehicle. Background Art

[0003] After surgery or during hospitalization, patients often need to be transferred from an operating table to a bed, or from one bed to another. The traditional practice is: if a patient is transferred from an operating table to a bed, someone needs to hold or carry the patient to a wheelchair or transfer bed, which requires a lot of physical strength, and it is easy to tear the wound during the lifting process, causing secondary damage to the patient who has just undergone surgery. If a patient is transferred from one bed to another, it is generally carried and lifted, which is very laborious. On the other hand, if other professional patient transfer mechanisms are used to move patients, they are often affected by the space in the ward. For example, if the bed is next to the wall, there is only one side where the patient transfer mechanism can be placed, and the patient transfer mechanism must be constantly adjusted to adapt to the bed to achieve the transfer.

[0004] Patients usually lie on the transfer mechanism, especially when they are being transferred. In order to prevent patients from falling off the bed, handrails need to be set on both sides of the panel of the transfer mechanism or transfer vehicle. When the transfer mechanism or transfer vehicle is docked with the bed, the handrails hinder the movement of the panel and must be removed or folded down. If they want to be folded down, the handrails on the side of the bed frame will affect the seamless docking of the transfer vehicle and the bed. Summary of the invention

[0005] The purpose of the present invention is to overcome the defect in the prior art that the handrail affects the seamless connection between the transfer vehicle and the hospital bed, and to provide a patient transfer mechanism and a transfer vehicle in which the handrail can be flipped over and does not affect the connection between the transfer vehicle and the hospital bed.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A transfer vehicle capable of bidirectionally transporting patients, characterized in that it comprises: a bed frame and handrails rotatably mounted on the left and right sides of the bed frame, the handrails comprising a handrail body and at least one long connecting plate connected to the end of the handrail body and arranged perpendicularly to the handrail body; the long connecting plate is rotatably connected to the bottom of the upper plate of the bed frame through an armrest rotating shaft, and at least one long connecting plate is positioned above or below the upper plate of the bed frame by an armrest locking assembly; the locking assembly comprises a locking frame slidably connected to the lower surface of the upper plate of the bed frame and two upper locking blocks and a lower locking block arranged in parallel and fixed to the ends of the locking frame.

[0008] Furthermore, the locking assembly also includes a lock frame mounting plate fixed to the lower surface of the bed frame upper plate, the lock frame includes a connecting rod passing through the lock frame mounting plate and a pull rod fixedly installed on the end of the connecting rod, and the end of the lock frame mounting plate opposite to the armrest rotating shaft has a positioning groove for installing the armrest rotating shaft.

[0009] Furthermore, one end of the armrest rotating shaft is rotatably connected to the lower surface of the bed frame upper plate, and the other end has a square positioning block extending outward, and the positioning groove is also square and is used to position and install the square positioning block.

[0010] Furthermore, the two sides of the long connecting plate are respectively provided with an upper limit groove and a lower limit groove. When the armrest is located above the upper plate of the bed frame, the long connecting plate extends to the outer edge of the bed, the armrest is upward, and the upper locking block is against the upper limit groove; when the armrest is located below the upper plate of the bed frame, the armrest is downward, and the lower locking block is against the lower limit groove.

[0011] Furthermore, it also includes a panel that can be moved left and right for scooping and carrying patients. The panel includes a center plate and a movable plate. A plurality of bolt installation grooves are provided near the edge of the center plate. The docking bolts are installed into the center plate from the installation grooves, and the screw rods of the docking bolts extend out of the left and right sides of the center plate. The side of the movable plate is provided with docking holes corresponding to the screw rods of the docking bolts. The screw rods of the docking bolts are inserted into the docking holes of the movable plate to dock the movable plate with the center plate.

[0012] Furthermore, the panel surface also has a transmission belt for driving the patient to rise onto the panel, and a second guide roller for guiding the transmission belt is installed under the movable plate.

[0013] Furthermore, a guide roller quick-release assembly is installed on the lower surface of the movable plate, and the guide roller quick-release assembly includes a quick-release mounting plate fixedly installed on one end of the movable plate, a pin shaft is pinned on the quick-release mounting plate, a pressure block is fixedly installed on the pin shaft, a retaining spring for returning the pin shaft is also installed on the pin shaft, and the pressure block is integrally connected to the first support plate; a second support plate corresponding to the first support plate is fixedly installed on the other end of the movable plate, one end of the second guide roller is overlapped on the second support plate, and the other end is overlapped on the first support plate and is pressed and fixed by the pressure block, and the second guide roller is taken out by lifting the first support plate to drive the pressure block to move.

[0014] Furthermore, the second guide rollers are two round rollers arranged in parallel, and the ends of the two round rollers are fixed on the guide roller connecting block, and the guide roller connecting block is overlapped on the first support plate and the second support plate.

[0015] The beneficial effects of the bidirectionally movable patient transfer vehicle of the present invention are:

[0016] 1. The armrest is installed on the upper plate of the bed frame through a long connecting plate perpendicular to it, and the armrest is positioned above and below the bed frame through a locking frame. When the armrest is located above the bed frame, it is located on the left and right sides of the edge of the bed frame. When the armrest is located below the bed frame, it can be close to the side plates of the bed frame, leaving a certain space below the upper plate of the bed frame so that the bed frame and the bed can be seamlessly connected.

[0017] 2. The panel is set as a center plate and a movable plate, so that the movable plate can be quickly removed and the second guide roller of the movable plate can be cleaned at the same time. Since the movable plate can be reversed, it is easier to quickly remove the second guide roller. When taking the movable plate, just fold the armrest down to under the upper plate of the bed frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a top-view stereoscopic structural diagram of an embodiment of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention from a lower viewing angle;

[0021] Figure 3 It is a partial structural stereogram of an embodiment of the present invention;

[0022] Figure 4 This is a transmission structure diagram of a panel moving mechanism according to an embodiment of the present invention;

[0023] Figure 5 This is a transmission structure diagram of a belt transmission mechanism according to an embodiment of the present invention;

[0024] Figure 6 This is a three-dimensional structural diagram of a belt transmission mechanism according to an embodiment of the present invention;

[0025] Figure 7 is a three-dimensional diagram of an armrest according to an embodiment of the present invention;

[0026] Figure 8 This is a structural diagram of an embodiment of the present invention when the armrest is located below the upper plate of the bed frame;

[0027] Fig. 9 is a structural diagram of a locking assembly according to an embodiment of the present invention;

[0028] Fig.10 This is a structural diagram of an embodiment of the present invention when the armrest is located above the upper plate of the bed frame;

[0029] Fig.11 This is a structural diagram of a guide roller quick-release assembly according to an embodiment of the present invention;

[0030] Fig.12 This is a connection diagram of one end of the second guide roller in an embodiment of the present invention;

[0031] Fig.13 is a partial structural diagram of a guide roller quick-release assembly according to an embodiment of the present invention;

[0032] Fig.14 This is a diagram of the installation structure of a travel switch according to an embodiment of the present invention;

[0033] Fig.15 This is a structural diagram of the power assist mechanism of an embodiment of the present invention;

[0034] Fig.16 This is a structural diagram of a manually disengaged coupling in a disengaged state according to an embodiment of the present invention;

[0035] Fig.17 This is a structural diagram of a closed state of a manually disengaged coupling according to an embodiment of the present invention;

[0036] Fig.18 is a partial cross-sectional view of a manually disengageable coupling according to an embodiment of the present invention;

[0037] Fig.19 is a structural diagram of a first docking block according to an embodiment of the present invention;

[0038] Fig. 20 is a structural diagram of an operation panel according to an embodiment of the present invention;

[0039] Fig.21 This is a structural diagram of the connection between the lower body bed frame and the upper body bed frame according to an embodiment of the present invention;

[0040] Fig. 22 2. It is a structural diagram of a tongue-shaped guide plate according to an embodiment of the present invention;

[0041] Fig.23 It is a structural diagram of a lock frame according to an embodiment of the present invention.

[0042] In the figure: 1, first motor, 2, first electric push rod, 3, sprocket drive rod, 4, first driving sprocket, 5, auxiliary sprocket, 6, first driven sprocket, 7, auxiliary frame, 8, bed frame, 81, lower body bed frame, 82, upper body bed frame, 83, bed frame upper plate, 831, overlap, 84, bed frame side plate, 841, limit guide groove, 9, first panel drive sprocket, 11, transmission chain, 12, panel guide rail, 13, guide groove, 14, panel, 143, center plate, 1431, bolt mounting groove, 144 , movable plate, 16, connecting rod shaft, 17, connecting plate, 18, third motor, 19, second driving sprocket, 20, first belt drive sprocket, 21, first reel, 22, second belt drive sprocket, 23, second reel, 24, third belt drive sprocket, 25, first guide roller, 26, side roller, 27, second guide roller, 28, docking bolt, 291, first support plate, 292, quick release mounting plate, 293, pin shaft, 294, pressure block, 295, retaining spring, 296, second support plate, 30, handrail, 3 01, armrest body, 302, long connecting plate, 3021, upper limit groove, 3022, lower limit groove, 303, armrest rotation axis, 31, locking assembly, 311, lock frame, 3111, connecting rod, 3112, pull rod, 312, upper lock block, 313, lower lock block, 315, positioning groove, 316, lock frame mounting plate, 32, travel switch, 321, limit rod, 33, lifting device, 34, first docking block, 341, first docking tooth, 342, disengage adjustment groove, 35, first Second docking block, 351, second docking tooth, 36, output mounting rod, 37, manual adjustment rod, 38, sliding key, 39, docking slide groove, 40, disengagement adjustment plate, 411, power-assisted electric push rod, 412, wedge block, 413, power-assisted wheel, 4131, square shaft, 414, power-assisted mounting plate, 415, horizontal guide rail, 416, horizontal slider, 417, inclined guide rail, 418, inclined slider, 419, wheel mounting frame, 4191, upper sleeve cam, 420, vertical guide rail, 421, vertical slider. 43. Operation panel, 44. Reserved hole, 45. Bottle rack, 46. Transmission belt, 47. Transfer frame body, 48. Plug-in shaft, 481. Lower sleeve convex shaft, 482. Plug-in groove, 49. Shock-absorbing spring, 50. Tongue-shaped guide plate, 501. Bed frame rotating shaft, 51. Panel hinge block, 52. Guide roller connecting block, 53. Reset spring. DETAILED DESCRIPTION

[0043] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0044] like Figure 1-Figure 23A specific embodiment of a patient transfer mechanism and a transfer vehicle of the present invention is shown, and the patient transfer vehicle comprises: a bed frame 8, a patient transfer panel installed on the bed frame 8 for transferring patients, flippable armrests 30 arranged on both sides of the bed frame 8, and a walking mechanism for driving the transfer vehicle to move.

[0045] See also Figure 1-Figure 6 The patient transfer panel includes a panel moving mechanism and a belt transmission mechanism, wherein the panel moving mechanism includes: a first motor 1 installed on a bed frame 8, a first driving sprocket 4 coaxially installed with an output shaft of the first motor 1, two auxiliary sprockets 5 for tensioning a chain arranged on the left and right sides of the first driving sprocket 4, and a first driven sprocket 6 symmetrically arranged on both sides of the first driving sprocket 4, wherein the auxiliary sprocket 5 is located obliquely above the first driving sprocket 4, and the chain sequentially passes around the first driving sprocket 4, passes around from above the auxiliary sprocket 5, and then passes around from below to above the first driven sprocket 6. The auxiliary sprocket 5 is installed on the auxiliary frame 7, and the auxiliary frame 7 is fixedly installed on the bed frame 8. The two first driven sprockets 6 are fixedly installed on the sprocket transmission rod 3. The first panel driving sprocket 9 is installed on the sprocket transmission rod 3 in parallel with the first driven sprocket 6. The other end of the sprocket transmission rod 3 is fixedly installed with the second panel driving sprocket. The lower surface of the panel 14 is fixedly installed with a transmission chain 11. In this embodiment, there are two transmission chains 11, which are respectively meshed with the first panel driving sprocket 9 and the second panel driving sprocket for transmission.

[0046] In order to guide the panel 14 , the bed frame 8 has a panel guide rail 12 arranged parallel to the transmission chain 11 , and the lower surface of the panel 14 has a guide groove 13 matched with the panel guide rail 12 .

[0047] In this embodiment, the bed frame 8 is divided into two parts, including a lower body bed frame 81 and an upper body bed frame 82. The panel 14 is also divided into two parts, including an upper body panel and a lower body panel. The lower body bed frame 81 is installed with a first electric push rod 2. The output shaft of the first electric push rod 2 is connected to a connecting rod shaft 16. Both ends of the connecting rod shaft 16 are fixedly installed with a connecting frame plate 17. The connecting frame plate 17 is fixedly connected to the upper body bed frame 82. The lower body bed frame 81 and the upper body bed frame 82 are rotatably connected. Fig.21 and Fig. 22 A tongue-shaped guide plate 50 is fixedly connected to the lower body bed frame 81, and the end of the tongue-shaped guide plate 50 is fixedly connected to the lower body bed frame 81. The upper body bed frame 82 is rotatably connected to the tongue-shaped guide plate 50 through a bed frame rotating shaft 501, and the upper body bed frame 82 has a guide hole for the tongue-shaped guide plate 50 to pass through.

[0048] The upper body panel and the lower body panel are rotatably connected by the panel hinge block 51. Therefore, the upper body panel can move together with the lower body panel. In this embodiment, the driving device of the panel moving mechanism is arranged on the lower body bed frame 81, and panel guide rails 12 are arranged at both ends and the middle of the bed frame 8, so that the upper body panel and the lower body panel can move synchronously and smoothly.

[0049] Belt transmission mechanisms are provided on both the lower body bed frame 81 and the upper body bed frame 82, which can realize the separate movement of the lower body and the upper body of the patient, thereby adjusting the angle at which the patient lies. Here, the belt transmission mechanism used for moving the lower body is described.

[0050] See also Figure 2 , Figure 5 and Figure 6 The belt transmission mechanism includes a third motor 18 installed on the bed frame 8 through a bracket, a second active sprocket 19 installed coaxially with the output shaft of the third motor 18, a first belt drive sprocket 20 connected to the second active sprocket 19 through a chain transmission, a second belt drive sprocket 22 installed on the first reel 21 in parallel with the first belt drive sprocket 20, a second reel 23 arranged parallel to the first reel 21, a third belt drive sprocket 24 is installed on the second reel 23, the second belt drive sprocket 22 is connected to the third belt drive sprocket 24 through a chain, the first reel 21 and the second reel 23 are both rotatably connected to the bed frame 8, and first guide rollers 25 are correspondingly arranged above the first reel 21 and the second reel 23, and both ends of the first guide roller 25 are mounted on the bed frame 8 through bearings. Side rollers 26 are installed on the left and right sides of the panel 14, and second guide rollers 27 are installed on the inner sides of the side rollers 26; the two ends of the transmission belt 46 are respectively wound on the first reel 21 and the second reel 23, and the transmission belt 46 is wound around the first guide roller 25 in sequence after winding out from the first reel 21 and the second reel 23, and then wound around the upper surface of the second guide roller 27, and then wound around the lower surface of the side roller 26 to the top of the panel 14. The transmission belt 46 contacts the patient's body and transfers the patient to the panel 14.

[0051] As a preferred embodiment, two first guide rollers 25 arranged in parallel are respectively arranged above the first reel 21 and the second reel 23. Although the panel 14 moves left and right, the total length of the transmission belt 46 rolled out from the first reel 21 and the second reel 23 remains unchanged, and as the panel 14 moves left and right, the transmission belt 46 adaptively contacts one of the two first guide rollers 25 arranged in parallel.

[0052] In the process of transporting patients, especially patients who have just undergone surgery, the transmission belt 46 is easily stained with blood and other dirt. After the transmission belt 46 contacts the second guide roller 27, the second guide roller 27 will be contaminated. Therefore, this embodiment designs a mechanism that allows the second guide roller 27 to be quickly disassembled and replaced.

[0053] Panel 14 is used to scoop up and carry the patient by moving left and right, see Figure 5 The panel 14 includes a central plate 143 and a movable plate 144. The central plate 143 is provided with a plurality of bolt installation slots 1431 near the left and right edges. The docking bolts 28 are inserted into the central plate 143 through the bolt docking installation slots, and the screws of the docking bolts 28 extend out of the left and right sides of the central plate 143. The side of the movable plate 144 is provided with docking holes corresponding to the screws of the docking bolts 28. The screws of the docking bolts 28 are inserted into the docking holes of the movable plate 144 to dock the movable plate 144 with the central plate 143. Figure 11-13 Taking the panel transfer mechanism and belt transmission mechanism of the lower body as an example, a guide roller quick-release assembly is installed on the lower surface of the movable plate 144, and the guide roller quick-release assembly includes a quick-release mounting plate 292 fixedly installed with one end of the movable plate 144, a pin shaft 293 is pinned on the quick-release mounting plate 292, a pressure block 294 is fixedly installed on the pin shaft 293, and a retaining spring 295 for returning the pin shaft 293 is also installed on the pin shaft 293, and the pressure block 294 is integrally connected with the first support plate 291; a second support plate 296 corresponding to the first support plate 291 is fixedly installed at the other end of the movable plate 144, one end of the second guide roller 27 is overlapped on the second support plate 296, and the other end is overlapped on the first support plate 291 and is pressed and fixed by the pressure block 294, and the pressure block 294 is driven to move by pressing down the first support plate to take out the second guide roller 27. One end of the second guide roller 27 is fixed by the guide roller quick release assembly, and the other end is directly overlapped on the second support plate 296 fixed at the other end of the panel 14 and corresponding to the first support plate 291. In fact, to realize the quick release of the second guide roller 27, it is only necessary to naturally overlap one end of the second guide roller 27 on the support plate, and press the other end by the pressing block 294. When the second guide roller 27 needs to be removed, the first support plate 291 is pressed down to make the pressing block release the second guide roller 27, and the second guide roller 27 is pushed to the other end to take out the second guide roller 27. Due to the elastic force of the retaining spring 295, it can be ensured that the second guide roller 27 is always pressed by the pressing block 294 without being affected by external forces. The second guide roller 27 is two round rollers arranged in parallel, and the ends of the two round rollers are fixed on the guide roller connecting block 52, and the guide roller connecting block 52 is overlapped on the first support plate 291 and the second support plate 296. The movable plate 144 can also be pulled outward to be separated from the central plate 143, and the second guide roller 27 can be exposed upward by turning the movable plate 144, so that the disassembly and replacement can be more convenient.

[0054] In the process of transferring patients, in order to achieve a perfect overlap with the hospital bed, the transfer panel 14 needs to be raised and lowered to a height close to the bed surface.

[0055] When the patient is lying on the transfer cart, in order to prevent the patient from falling off the bed, handrails 30 need to be provided on both sides of the transfer panel 14 of the transfer cart. However, when the patient is transferred, since the transfer panel 14 needs to move left and right, the handrails 30 need to be folded down. After the handrails 30 are folded down, in order not to affect the docking of the moving panel 14 and the bed, the folding mechanism of the handrails 30 is also specially designed in this embodiment.

[0056] See also Figure 7-Figure 10 The armrest 30 includes an armrest body 301 and at least one long connecting plate 302 connected to the end of the armrest body 301 and arranged perpendicularly to the armrest body 301; the long connecting plate 302 is rotatably connected to the bottom of the bed frame upper plate 83 through the armrest rotating shaft 303, and at least one long connecting plate 302 is positioned above or below the bed frame upper plate 83 by the armrest locking assembly 31.

[0057] The locking assembly 31 includes a locking frame 311 slidably connected to the lower surface of the bed frame upper plate 83 and two upper locking blocks 312 and lower locking blocks 313 fixed to the ends of the locking frame 311 and arranged in parallel. The locking assembly 31 also includes a locking frame mounting plate 316 fixed to the lower surface of the bed frame upper plate 83, see Fig.23 The lock frame 311 includes a connecting rod 3111 passing through the lock frame mounting plate 316 and a pull rod 3112 fixedly mounted at the end of the connecting rod 311. The end of the lock frame mounting plate 316 opposite to the armrest rotating shaft 303 has a positioning groove 315 for mounting the armrest rotating shaft 303. One end of the armrest rotating shaft 303 is rotatably connected to the lower surface of the bed frame upper plate 83, and the other end has a square positioning block extending outward. The positioning groove 315 is also square and is used to position and install the square positioning block. The two sides of the long connecting plate 302 are respectively provided with an upper limiting groove 3021 and a lower limiting groove 3022. When the armrest 30 is located above the upper plate 83 of the bed frame, the long connecting plate 302 extends toward the outer edge of the bed, the armrest 30 is upward, the upper locking block 312 abuts against the upper limiting groove 3021, and the square positioning block is located in the positioning groove 315. When the armrest 30 needs to be folded downward, the locking frame 311 is pulled to disengage the upper locking block 312 from the upper limiting groove 3021, and the armrest 30 is rotated downward, and the long connecting plate 302 is folded 180°. At this time, the armrest 30 is close to the bed frame 8, leaving space below the upper plate 83 of the bed frame. After the armrest 30 is folded downward into place, the locking frame 311 is pulled to abut the lower locking block 313 against the lower limiting groove 3022. The positioning block and the positioning groove can also be of other shapes to ensure that the armrest rotation shaft 303 does not rotate.

[0058] See also Figure 2 and Fig.14The bed frame side plate 84 is provided with a travel switch 32, and the bed frame side plate 84 has a limit guide groove 841. The limit rod 321 of the travel switch 32 extends from the limit guide groove 841. The bed frame 8 is installed on the lifting device 33. When the bed frame 8 is docked with the bed, the edge of the bed frame upper plate 83 is placed on the bed. The lifting device 33 drives the bed frame 8 to rise and fall. When the limit rod 321 hits the bed, the lifting device 33 drives the bed frame 8 to continue to fall. The distance of the bed frame upper plate 83 can be calculated and determined according to the upward movement distance of the limit rod 321. The driving mechanism of the comprehensive control travel switch 32 and the lifting device 33 realizes the perfect seamless docking of the bed and the transfer vehicle panel 14.

[0059] The method for docking the patient transfer vehicle and the hospital bed according to the embodiment of the present invention is as follows:

[0060] Step 1: Flip the handrail 30 on the side where the patient transfer cart is connected to the bed downward to below the upper plate 83 of the bed frame, close to the side plate 84 of the bed frame;

[0061] Step 2, move the patient transfer cart to the left or right side of the bed, so that the patient transfer cart and the bed are placed side by side, and the panel 14 of the transfer cart just corresponds to the body of the patient on the bed, and the overlapping part 831 of the upper plate 83 of the bed frame overlaps with the edge of the bed; when the patient is in a sitting or lying position, drive the first electric push rod 2 to extend and retract, so that the upper body bed frame 82 is flipped upward at the same angle as the head of the bed is flipped upward.

[0062] Step 3, control the lifting device 33 to drive the bed frame 8 to descend. During the descent, the bed contacts the limit rod 321 of the travel switch 32. As the limit rod 321 rises, the travel switch 32 feeds back the calculated distance from the bed to the upper plate 83 of the bed frame to the control system in real time and displays it on the operation panel 43;

[0063] Step 4: When the travel switch detects that the patient bed is in contact with the upper plate 83 of the bed frame, the control system sends a command to disconnect the drive of the lifting device 33, the bed frame 8 stops moving, and the docking is completed.

[0064] The output shaft of the first motor 1 is connected to the first driving sprocket 4 through a coupling. In order to ensure the absolute safety of the patient and prevent the panel 14 from being forced to move and injuring the patient during the left and right movement, the coupling used here is designed to be manually disengaged, see Figure 16-Figure 20The manual disengagement coupling comprises a first docking block 34 mounted on the rotating shaft on the output shaft side of the first motor 1 through a spline, an output mounting rod 36 for mounting an output mechanism (the first driving sprocket 4 in this embodiment), and a second docking block 35 mounted on the output mounting rod 36 and connected to the first docking block 34; the output mounting rod 36 is a hollow shaft, and the manual adjustment rod 37 passes through the center of the output mounting rod 36. A sliding key 38 is fixed on the rotating shaft on the output shaft side of the first motor 1, a docking slot 39 corresponding to the sliding key 38 is provided on the inner wall of the first docking block 34, a first docking tooth 341 is provided on the side of the first docking block 34 facing the second docking block 35, a second docking tooth 351 corresponding to the first docking tooth 341 is provided on the second docking block 35, a disengagement adjustment slot 342 is provided at the center of the first docking tooth 341, and a disengagement adjustment sheet 40 is provided on the end of the manual adjustment rod 37 facing the first docking tooth 341, and the disengagement adjustment sheet 40 is used in correspondence with the disengagement adjustment slot 342. A reset seat is installed between the first docking block 34 and the first motor 1, and a reset spring 53 is installed between the reset seat and the first docking block 34. The outer end of the manual adjustment rod 37 passes through the hollow shaft of the output mounting rod 36 and is located in the reserved hole 44 reserved on the bed frame 8. A person's hand reaches into the reserved hole 44 to push the manual adjustment rod 37, disengages the adjustment plate 40 to push the first docking block 34 away from the second docking block 35, and when the docking teeth of the two docking blocks are disengaged from each other, the output mounting rod 36 is rotated to make the tooth shapes of the first docking teeth 341 and the second docking teeth 351 abut against each other, and the coupling is disengaged. When the coupling needs to be reconnected, it is only necessary to slightly rotate the output mounting rod so that the first docking teeth 341 and the second docking teeth 351 can mesh with each other under the action of the reset spring 53. The coupling is disengaged manually to ensure the safety of the patient in an emergency.

[0065] An operation panel 43 is installed at the end of the bed frame 8 near the foot or head of the person, the reserved hole is located near the operation panel 43, and in this embodiment, the reserved hole is located below the operation panel 43, and the control button of the power-assisted electric push rod 411 is located on the operation panel 43. The operation panel 43 is located in the middle of the head or tail of the bed frame.

[0066] See also Figure 1-Figure 3 The bed frame 8 is installed on the transfer vehicle frame body 47, and the height of the bed frame 8 is adjusted by the lifting device 33 on the transfer vehicle. The four corners of the transfer vehicle have four wheels, but sometimes a power-assisting mechanism is needed to provide auxiliary power for pushing patients for a long time or uphill.

[0067] See also Fig.15The power-assisting mechanism includes a power-assisting electric push rod 411 installed on the transfer frame body 47 through a bracket, a wedge block 412 connected to the telescopic end of the power-assisting electric push rod 411, and a self-powered power-assisting wheel 413. The wedge block 412 is slidably connected to the transfer frame body 47. Specifically, a power-assisting mounting plate 414 is fixedly installed on the transfer frame body 47, a horizontal guide rail 415 is fixedly installed on the power-assisting mounting plate 414, and a horizontal slide 415 is fixedly installed on the upper right-angle side of the wedge block 412. Block 416; an inclined guide rail 417 consistent with the direction of the lower inclined side of the wedge block 412 is fixed on the lower inclined side of the wedge block 412, an inclined slider 418 is slidably connected to the inclined guide rail 417, the power-assisting wheel 413 is mounted on a wheel mounting frame 419, the upper part of the wheel mounting frame 419 is fixedly connected to the inclined slider 418, a vertical guide rail 420 is fixedly installed on the side of the wheel mounting frame 419, the vertical guide rail is provided with a vertical slider 421 which slides with it, and the vertical slider 421 is fixed on the transfer frame body 47. The power-assisting wheel is mounted on the plug-in shaft 48, and the lower part of the wheel mounting frame is provided with an upper sleeve cam 4191, and the two ends of the rotating shaft of the power-assisting wheel are square shafts 4131; the upper end of the plug-in shaft 48 is provided with a lower sleeve cam 481 corresponding to the sleeve cam, and the lower end is provided with a socket groove 482 plugged into the square shaft 4131; the two ends of a shock-absorbing spring 49 are respectively sleeved on the upper sleeve cam 4191 and the lower sleeve cam 481.

[0068] The working process of the supporting organization is:

[0069] The power-assisted wheel 413 is usually higher than the other four wheels of the transfer vehicle and does not participate in the work. When the power-assisted wheel 413 needs to work, the power-assisted electric push rod 411 pushes the wedge block 412 outward. Since the lower surface of the wedge block 412 is an inclined surface, and the front and rear positions of the wheel mounting frame 419 do not change, the contact surface between the wedge block 412 and the wheel mounting frame 419 becomes lower and lower, thereby pushing the wheel mounting frame 419 to move downward and causing the power-assisted wheel 413 to touch the ground. Since the power-assisted wheel 413 is a self-powered wheel, you only need to control the operation panel 43 or the remote control or turn on the switch of the power-assisted wheel 413 to start the power-assisted wheel 413 to provide assistance.

[0070] In this embodiment, the lifting device 33 is an electric push rod.

[0071] In this embodiment, an operation panel 43 is also provided at the end of the bed, which is used to control the operation of the first motor 1 to drive the panel 14 to move left and right, control the rotation of the first electric push rod 2 and the third motor 18 to drive the transmission belt 46 to rotate, control the lifting and lowering of the bed frame 8, the lifting of the power-assisted wheel 413, and the working status of the power-assisted wheel 413, etc.

[0072] In this embodiment, the reserved hole 44 for the manual adjustment rod 37 to extend out is located below the operating panel 43. On the one hand, it is covered by the operating panel 43 above and does not affect the overall appearance. On the other hand, it is located near the operating panel 43 and in the middle of the bed frame 8, which is convenient for the operator to operate nearby and in a timely manner.

[0073] In this embodiment, travel switches 32 are provided on both sides of the lower body bed frame 81 and the upper body bed frame 82 , and a total of four travel switches 32 are provided.

[0074] The transmission belt 46 in this embodiment can be made of a special bed sheet that is easy to disassemble and wash. In order to facilitate disassembly, the side rollers 26 are divided into multiple sections, each side roller 26 is connected to a transmission belt 46, and each transmission belt 46 can also be made of multiple sections glued together by Velcro. If a section of the transmission belt 46 is contaminated, it only needs to be removed and replaced with a clean section of the transmission belt 46.

[0075] In this embodiment, a bottle rack 45 for placing oxygen bottles is fixedly installed below the bed frame 8.

[0076] The specific working process of the embodiment of the present invention is as follows:

[0077] Since the left and right armrests 30 can be flipped, the panel 14 can be moved to the left and right sides, so the patient can be transferred regardless of whether the bed is on the left or right side of the transfer vehicle. Specifically, the transfer vehicle is pushed near the bed and placed in parallel with the bed, and the edge of the bed frame 8 can be slightly overlapped with the bed, and then the lifting device 33 is controlled to slowly lower the bed frame 8. When the limit rod 321 of the travel switch 32 touches the bed, the limit rod 321 moves upward to the position where the travel switch 32 can determine the distance between the lower surface of the bed frame 8 and the bed. When the lower surface of the bed frame 8 contacts the bed, the travel switch 32 is immediately The horse disconnects the switch of the lifting device 33, and the bed frame 8 stops the lifting movement; taking the left side of the hospital bed as an example, the first motor 1 rotates to drive the upper body panel and the lower body panel to move synchronously to the left, and the transmission belt 46 rotates clockwise at the same time. When the panel 14 moves under the patient's body, the panel 14 continuously moves under the patient's body, and the transmission belt 46 rotates clockwise to transfer the patient to the panel 14 using friction; if the patient is lying on the panel 14 in an inclined posture, the third motor 18 of the belt transmission mechanism for moving the upper body and the lower body can be turned on respectively, or the speeds of the two motors can be different to adjust the body position of the person. When all the patients are transferred to the panel 14, the transfer vehicle can be pushed to transfer the patients.

[0078] If the patient has just undergone surgery and it is inconvenient to transfer the bed by lifting, the transfer vehicle can smoothly transfer the patient. After the transmission belt 46 is contaminated, the transmission belt 46 can be replaced in sections as needed. If the second guide roller 27 is contaminated, it is only necessary to pull the movable plate 144 outward to disengage the movable plate 144 from the docking bolt 28, thereby exposing the second guide roller 27. The second guide roller 27 can be removed and replaced by pulling the first support plate 291 to push the second guide roller 27 to the other end. The guide roller can be quickly replaced, and the time for cleaning the second guide roller 27 on the transfer vehicle is saved.

[0079] The patient transfer vehicle of the present invention is not limited by the space of the ward, and the patient can be easily transferred to the panel 14 regardless of whether the bed is on the left or right side of the transfer vehicle.

[0080] The transfer vehicle can also provide active power as needed, which is convenient and labor-saving.

[0081] The coupling can be manually adjusted and disconnected to ensure the absolute safety of the patient.

[0082] In this embodiment, the panel 14 is an arched structure, the bolt installation slot 1431 opens downward, the center plate 143 is a plane, and the outer edge of the movable plate 144 is tilted downward. The middle of the panel 14 is higher, and the left and right edges are relatively low and thin, so that the panel 14 can be easily shoveled under the human body.

[0083] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A patient transfer mechanism, characterized in that: include: The panel moving mechanism and the belt rotating mechanism, the panel moving mechanism comprises: a panel, a first motor mounted on the bed frame, a first driving sprocket coaxially mounted with the output shaft of the first motor, and a first driven sprocket arranged on the left and right sides of the first driving sprocket and connected to the first driving sprocket by chain transmission; The first driven sprocket is fixedly mounted on the sprocket transmission rod, and a first panel driving sprocket is mounted on the sprocket transmission rod in parallel with the first driven sprocket, and a transmission chain is fixedly mounted on the lower surface of the panel, and the transmission chain meshes with the first panel driving sprocket for transmission; the belt rotation mechanism includes: a third motor mounted on the bed frame through a bracket, a second driving sprocket coaxially mounted with an output shaft of the third motor, a first belt driving sprocket driven by the second driving sprocket through a chain, a second belt driving sprocket mounted on the first drum in parallel with the first belt driving sprocket, a second drum arranged parallel to the first drum, a third belt driving sprocket mounted on the second drum and chain-driven with the second belt driving sprocket, and a first guide roller arranged parallel to the first drum and the second drum The first reel and the second reel are both rotatably mounted on the bed frame, side rollers are mounted on the left and right sides of the panel, and a second guide roller arranged parallel to the first guide roller is mounted on the inner side of the side roller, and the two ends of the transmission belt are respectively wound on the first reel and the second reel, and then successively bypass the first guide roller and the second guide roller, and then bypass the bottom of the side roller to the top of the panel; the patient transfer mechanism also includes armrests rotatably mounted on the left and right sides of the bed frame, the armrests include an armrest body and at least one long connecting plate connected to the end of the armrest body and vertically arranged with the armrest body; the long connecting plate is rotatably connected to the bottom of the upper plate of the bed frame through an armrest rotating shaft, and at least one long connecting plate is positioned above or below the upper plate of the bed frame by an armrest locking assembly.

2. A patient transfer mechanism according to claim 1, characterized in that: The panel moving mechanism also includes: two auxiliary sprockets for tensioning the chain, which are arranged on the left and right sides of the first driving sprocket, and the auxiliary sprockets are located obliquely above the outer side of the first driving sprocket. The chain successively passes around the first driven sprocket, passes over the auxiliary sprocket, and finally passes from the bottom of the first driven sprocket to the top.

3. A patient transfer mechanism according to claim 2, characterized in that: A second panel drive sprocket is fixedly mounted on the other end of the sprocket drive rod, and two drive chains respectively meshing with the first panel drive sprocket and the second panel drive sprocket are fixed on the lower surface of the panel. The bed frame also has a panel guide rail arranged parallel to the drive chain, and the lower surface of the panel has a guide groove matching the panel guide rail.

4. A patient transfer mechanism according to claim 1, characterized in that: Two first guide rollers arranged in parallel are respectively arranged above the first reel and the second reel. As the panel moves left and right, the transmission belt adaptively contacts one of the two first guide rollers arranged in parallel.

5. A patient transfer mechanism according to claim 3, characterized in that: It also includes a guide roller quick-release assembly, which includes: a quick-release mounting plate fixedly mounted on one end of the panel, a pin connected to the quick-release mounting plate, a pressure block fixedly mounted on the pin, a retaining spring for returning the pin to its original position also mounted on the pin, and the pressure block is integrally connected to the first support plate; a second support plate corresponding to the first support plate is fixedly mounted on the other end of the panel, one end of the second guide roller is overlapped on the second support plate, and the other end is overlapped on the first support plate and is pressed and fixed by the pressure block, and the second guide roller is taken out by lifting the first support plate to drive the pressure block to move.

6. A patient transfer mechanism according to claim 1, characterized in that: The transmission belt is formed by gluing together multiple sections of special sheets with Velcro, and the side rollers are divided into multiple sections, each of which is connected to a transmission belt.

7. A patient transfer mechanism according to any one of claims 1 to 6, characterized in that: The bed frame is divided into a lower body bed frame and an upper body bed frame, the panel is divided into an upper body panel and a lower body panel, the first motor is installed on the lower body bed frame, the lower body panel is connected to the upper body panel through a rotating hinge, and the lower body panel drives the upper body panel to move left and right synchronously.

8. A patient transfer vehicle, characterized in that: It comprises the patient transfer mechanism as claimed in claim 1, a transfer vehicle frame, a walking mechanism for driving the transfer vehicle to move, and a lifting device for driving the bed frame to rise and fall.

9. A patient transfer vehicle according to claim 8, characterized in that: A travel switch is installed on the side plate of the bed frame, and the side plate of the bed frame is provided with a limit guide groove, and a limit rod of the travel switch extends out from the limit guide groove.

10. The patient transfer vehicle according to claim 10, further comprising a power-assist electric push rod installed on the transfer vehicle frame body, a wedge block connected to the telescopic end of the power-assist electric push rod and a self-powered power-assist wheel, the wedge block is slidably connected to the transfer vehicle frame body; the transfer vehicle frame body is fixedly installed with a power-assist mounting plate, and the horizontal guide rail is fixedly installed with a horizontal sliding block that cooperates and slides with the horizontal guide rail; the lower oblique edge of the wedge block is fixed with an inclined guide rail consistent with the direction of the lower oblique edge of the wedge block, the oblique sliding block is slidably connected to the inclined guide rail, the power-assist wheel is installed on the wheel mounting frame, the upper part of the wheel mounting frame is fixedly connected with the inclined sliding block, and the side of the wheel mounting frame is fixedly installed with a vertical guide rail, and the vertical guide rail has a vertical sliding block that cooperates and slides therewith, and the vertical sliding block is fixed on the transfer vehicle frame body.

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