Electric transfer bed

Abstract

The present invention relates to an electric transfer bed, which comprises a transfer bed body provided with a fixed bed frame assembly and a movable bed plate assembly, wherein the movable bed plate assembly comprises a transfer plate, a transfer belt, a friction roller, a belt clamping mechanism, a transfer drive motor and a support; the belt clamping mechanism comprises an angle wheel group and a pressure wheel group, wherein the angle wheel group comprises an upper and lower row of roller groups, wherein the upper and lower row of roller groups are located on the side of the friction roller facing away from the transfer plate, and the pressure wheel group is located on the side of the friction roller facing the transfer plate and pressed on the outer top surface of the transfer belt. The belt clamping mechanism of the present invention contacts the transfer belt on the back of the friction roller through the upper and lower row of roller groups, pushes the transfer belt to be close to the friction roller, and then combines with the pressure wheel group to press the transfer belt in the direction of the friction roller toward the transfer plate, so that the angle between the transfer belt and the friction roller is greater than 180 degrees, thereby forming good contact and ensuring that the power is transmitted in place, and at the same time, the outer surface of the transfer belt is in rolling friction cooperation with the roller group and the pressure wheel group, and the wear is small.

Description

Technical Field

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

[0002] In the medical field, the transfer problem of bedridden patients is often encountered. The traditional method of transportation is manual transportation. During the transportation process, the patient's body position changes greatly, which not only increases the labor intensity of medical staff, but also may cause secondary injuries to patients, causing unnecessary pain to patients. In order to overcome the above shortcomings, an electric transfer bed is available on the market, which includes a transfer bed body provided with a fixed bed frame assembly and a movable bed board assembly. The movable bed board assembly is connected to the fixed bed frame assembly through a movable bed board driving mechanism. The movable bed board driving mechanism drives the movable bed board assembly to move horizontally on the fixed bed frame assembly. The movable bed board assembly includes a transfer plate, a transfer belt, a friction roller, a U-shaped pressure block, a transfer drive motor and a support. The transfer belt is annular, and the friction roller and the transfer plate are arranged horizontally in the transfer belt. The transfer plate, the friction roller, the U-shaped pressure block and the transfer drive motor are arranged on the support. The friction roller is connected to the transfer drive motor in a transmission manner. The U-shaped pressure block is arranged outside the transfer belt and is located next to the friction roller. The side of the friction roller facing away from the transfer plate is located in the U-shaped pressure block and close to the inner wall of the U-shaped pressure block. The support is connected to the movable bed board driving mechanism in a transmission manner. Since the length of the friction roller is about 2 meters, the friction roller is deformed due to the force, and it is difficult to ensure reliable contact with the inner wall of the transfer belt, so a U-shaped pressure block is set to prevent the inner surface of the transfer belt from losing sufficient contact area with the friction roller, which causes the transfer belt to slip. However, since the outer surface of the transfer belt contacts the inner wall of the U-shaped pressure block, it is easy to cause the surface of the transfer belt to be scratched.

[0003] In addition, Chinese patent number CN201210066628.2 disclosed a medical patient electric transfer bed on July 18, 2012, which includes a bed frame and a drive motor, a synchronous belt is installed at each end of the bed frame, the synchronous belt is mounted on a synchronous wheel system, the driving wheels in the synchronous wheel systems at both ends are connected to the drive motor through a universal joint, a fixing part is fixedly installed on the synchronous belt, the fixing part is fixedly connected to the roller shaft, the roller shaft is mounted with a roller for reducing friction, the movable bed board is fixedly connected to the roller shaft, the movable bed board and the roller shaft are mounted with a transmission belt with a ring-shaped cross-section, and end clamps for fixing the upper half of the transmission belt are installed on one side of the two ends of the bed frame near the moving edge of the movable bed board, the end clamps are connected to end clamp push rods that connect or separate them from the annular surface on the transmission belt, and the end clamp push rods are connected to the drive motor or the cylinder. When the electric medical patient transfer bed of this structure transfers the patient from the bed to the movable bed board, it is necessary to control the movable bed board to extend above the bed and control the operation of the conveyor belt, and ensure that the conveyor belt on the movable bed board cannot contact the bed sheet to prevent the bed sheet on the bed from being rolled onto the movable bed board at the same time. Since the conveyor belt needs to leave the bed, and the movable bed board extends out of the bed body of the electric transfer bed in a cantilevered shape, it is easy to cause the bed body to tip over, and the patient's body needs to be lifted up on the side close to the movable bed board to overlap on the conveyor belt of the movable bed board, which is easy to cause secondary injury to the patient. Summary of the invention

[0004] The object of the present invention is to provide an electric transfer bed which has a reasonable structure, a long service life, makes the transfer of the bed occupant easier and safer, and prevents the bed sheet from rolling up during the transfer.

[0005] The object of the present invention is achieved in that:

[0006] The movable bed plate assembly is connected to the fixed bed frame assembly through a movable bed plate driving mechanism, and the movable bed plate driving mechanism drives the movable bed plate assembly to move horizontally on the fixed bed frame assembly. The movable bed plate assembly comprises a transfer plate, a transfer belt, a friction roller, a belt clamping mechanism, a transfer drive motor and a support member. The transfer belt is annular, and the friction roller and the transfer plate are arranged horizontally in the transfer belt. The transfer plate, the friction roller, the belt clamping mechanism and the transfer drive motor are arranged on the support member, the friction roller is transmission-connected to the transfer drive motor, the belt clamping mechanism is arranged outside the transfer belt and is located next to the friction roller, and the support member is transmission-connected to the movable bed plate driving mechanism; it is characterized in that: the belt clamping mechanism comprises an angle wheel group and a pressure wheel group, the angle wheel group comprises two upper and lower rows of roller groups, the upper and lower rows of roller groups are distributed up and down and are located on the side of the friction roller facing away from the transfer plate, and the pressure wheel group is located on the side of the friction roller facing the transfer plate and is pressed on the outer top surface of the transfer belt.

[0007] The purpose of the present invention can also be solved by the following technical measures:

[0008] As a more specific solution, the belt clamping mechanism further includes a support beam, which is arranged beside a side of the angle wheel set facing away from the friction roller, and the angle wheel set and the pressure wheel set are respectively arranged on the support beam.

[0009] As a further solution, the angle wheel group also includes multiple first wheel frames and two first optical axes. Each first wheel frame is arranged on the support beam along the axial direction of the support beam. The first wheel frame is provided with an upper and lower axle seats. The two first optical axes are respectively inserted into the upper axle seat and the lower axle seat. The upper and lower rows of roller groups each include multiple rollers. At least one of the rollers is provided between the axle seats of two adjacent first wheel frames, and the roller sleeves are arranged outside the corresponding first optical axes.

[0010] As a further solution, the clamping wheel group includes multiple clamping wheels, multiple second wheel frames and a second optical axis. Each second wheel frame is arranged on the support beam along the axis direction of the support beam. The second wheel frame is in a 7-shape. The upper part of the first wheel frame is directly supported on the support beam or supported by an upper pad, and connected to the support beam by bolts. The upper part of the wheel frame is provided with a waist-shaped hole corresponding to the bolt. The second optical axis is arranged at the lower end of the second wheel frame. There is more than one clamping wheel between two adjacent second wheel frames. The clamping wheel sleeve is arranged outside the second optical axis. The clamping wheel group is clamped on the outer top surface of the transfer belt through the clamping wheel. After loosening the bolt, the second wheel frame can move left and right along the waist-shaped hole to adjust the distance between the clamping wheel and the friction roller, and to adjust the wrap angle between the transfer belt and the friction roller.

[0011] As a further solution, the transfer plate is provided with a plurality of friction-reducing wheels at both ends corresponding to its lateral moving direction, so that the left and right ends of the transfer plate are subjected to rolling friction with the transfer belt.

[0012] As a further solution, the movable bed board assembly also includes a lower support plate and a driven belt. The lower support plate is arranged below the transfer belt and connected to the support member. The driven belt is wound around the outside of the lower support plate. The end of the driven belt away from the friction roller is fixedly connected to the fixed bed frame assembly. There are multiple driven belts, and each driven belt is separated from each other. A supporting wheel is also provided on the lower support plate, which is separated from the driven belt. The supporting wheel protrudes from the top surface of the lower support plate and is higher than the top surface of the driven belt.

[0013] As a further solution, the fixed bed frame assembly includes a bed frame and a base plate, the base plate is arranged on the bed frame, and the movable bed board assembly is located above the base plate; the movable bed board driving mechanism includes a movable bed board driving motor, a synchronous shaft, a first synchronous pulley, a second synchronous pulley and a synchronous belt, the movable bed board driving motor and the synchronous shaft are arranged at the bottom of the bed frame, the synchronous shaft points forward and backward and cooperates with the bed frame to rotate, the movable bed board driving motor is connected to the synchronous shaft by transmission, the first synchronous pulley and the second synchronous pulley are laterally distributed at the end of the bed frame, the synchronous belt is sleeved outside the first synchronous pulley and the second synchronous pulley, the first synchronous pulley is connected to the synchronous shaft by transmission, and the top of the synchronous belt is connected to the support member of the movable bed board assembly by transmission.

[0014] As a further solution, the front and rear ends of the transfer plate are both provided with a transfer drive motor and a support member, the support member includes a motor frame and a connecting arm connected to each other, the friction roller is rotatably matched with the motor frame, the transfer drive motor is arranged on the motor frame, the connecting arm is connected to the transfer plate and the lower support plate through a clamping plate assembly, and the connecting arm is also connected to a synchronous belt. Both ends of the friction roller are driven by the transfer drive motor, and its power is more reliable.

[0015] As a further solution, support plate assemblies are provided at the front and rear ends of the bed frame, and the support plate assembly includes an inner support plate and an outer support plate. The first synchronous pulley, the second synchronous pulley and the synchronous belt are arranged between the inner support plate and the outer support plate. A tensioning wheel is also provided between the inner support plate and the outer support plate. The inner support plate and the outer support plate are both provided with upward and downward pointing grooves corresponding to the axle of the tensioning wheel. The axle and the slide groove slide up and down, and a tensioning adjustment screw is provided at the bottom of the slide groove. The tensioning adjustment screw is screwed into the slide groove from bottom to top and resists against the bottom of the axle.

[0016] As a further solution, fixed guardrails and movable guardrails are respectively provided on both sides of the transfer bed body. The fixed guardrail is arranged on the side of the movable bed frame assembly where the belt clamping mechanism is provided, and the movable guardrail is turned upside down and arranged on the fixed bed frame assembly and is located on the side opposite to the fixed guardrail.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) The belt clamping mechanism of this electric transfer bed contacts the transfer belt on the back of the friction roller through the upper and lower rows of roller groups, and pushes the transfer belt to be close to the friction roller. Then, the transfer belt is pressed against the transfer plate by the pressure wheel group, so that the wrap angle between the transfer belt and the friction roller is greater than 180 degrees, thereby forming a good contact and ensuring the transmission of power. At the same time, the outer surface of the transfer belt is in rolling friction with the roller group and the pressure wheel group, and its wear is small.

[0019] (2) This electric transfer bed has a lower support plate below the transfer plate. The lower support plate is covered with a driven belt. The lower support plate and the transfer plate extend out of the fixed bed frame assembly at the same time. The lower support plate can be placed on the external bed body. The driven belt rolls on the bed sheet of the external bed body like a track, so the bed sheet will not be rolled up. Moreover, through such a design, the transfer plate and the driven belt can be closer to the bed surface of the external bed body, so that the person on the bed surface can be transferred to the movable bed board assembly more easily and safely.

[0020] (3) The transfer belt and the lower support plate of this electric transfer bed are in rolling cooperation through the support wheels to reduce the resistance of the transfer belt rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure after one embodiment of the present invention is connected to a transfer vehicle.

[0022] Figure 2 for Figure 1 Another angle diagram of the structure of the movable bed board assembly in the extended state.

[0023] Figure 3 It is a schematic diagram of the decomposition structure of the present invention.

[0024] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0025] Figure 5 for Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0026] Figure 6 It is a schematic diagram of the overall decomposition structure of the movable bed board in the present invention.

[0027] Figure 7 for Figure 6 Enlarged structural diagram at point C in the middle.

[0028] Figure 8 It is a schematic diagram of the reverse partial structure of the lower support plate in the present invention.

[0029] Fig. 9 This is a schematic diagram of the connection structure from another angle in the present invention.

[0030] Fig.10 It is a schematic diagram of the structure of the movable bed board assembly in the folded state according to the present invention from above.

[0031] Fig.11 for Fig.10 Schematic diagram of DD cross-sectional structure.

[0032] Fig.12 for Fig.11 Enlarged structural diagram at G in the middle.

[0033] Fig.13 for Fig.10 Schematic diagram of EE cross-sectional structure.

[0034] Fig.14 for Fig.13 Enlarged structural diagram at H in the middle.

[0035] Fig.15 for Fig.10 Schematic diagram of the FF cross-sectional structure.

[0036] Fig.16 for Fig.15 The enlarged structural diagram at point I in the middle.

[0037] Fig.17 It is a schematic diagram of the structure of the movable bed board assembly in the extended state according to the present invention from above.

[0038] Fig.18 for Fig.17 The enlarged structural diagram at JJ is shown in FIG.

[0039] Fig.19 for Fig.18 Enlarged structural diagram at K in the middle.

[0040] Fig. 20 for Fig.19 Enlarged structural diagram at L in the middle. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] See also Figure 1-Figure 20 As shown, an electric transfer bed includes a transfer bed body 100 provided with a fixed bed frame assembly 10 and a movable bed board assembly 20, the movable bed board assembly 20 is connected to the fixed bed frame assembly 10 through a movable bed board driving mechanism 2, the movable bed board driving mechanism 2 drives the movable bed board assembly 20 to move horizontally on the fixed bed frame assembly 10, the movable bed board assembly 20 includes a transfer plate 4, a transfer belt 6, a friction roller 8, a belt clamping mechanism 3, a transfer drive motor 1 and a support member, the transfer belt 6 is annular, the friction roller 8 and the transfer plate 4 are horizontally arranged in the transfer belt 6, the transfer plate 4, the friction roller 8 and the transfer plate 4 are horizontally arranged in the transfer belt 6, and the transfer plate 4, the friction roller 8 and the transfer plate 4 are horizontally arranged in the transfer belt 6. The roller 8, the belt clamping mechanism 3 and the transfer drive motor 1 are arranged on the support member, the friction roller 8 is connected to the transfer drive motor 1, the belt clamping mechanism 3 is arranged outside the transfer belt 6 and is located next to the friction roller 8, and the support member is connected to the movable bed board drive mechanism 2; the belt clamping mechanism 3 includes an angle wheel group 31 and a pressure wheel group 33, the angle wheel group 31 includes two upper and lower rows of roller groups, the upper and lower rows of roller groups are distributed up and down and are located on the side of the friction roller 8 facing away from the transfer plate 4, and the pressure wheel group 33 is located on the side of the friction roller 8 facing the transfer plate 4 and is pressed on the outer top surface of the transfer belt 6.

[0043] The front and rear ends of the transfer plate 4 are both provided with a transfer drive motor 1 and a support member.

[0044] The belt clamping mechanism 3 further comprises a support beam 32 , which is arranged beside a side of the angle wheel set 31 facing away from the friction roller 8 , and the angle wheel set 31 and the pressure wheel set 33 are respectively arranged on the support beam 32 .

[0045] The angle wheel group 31 also includes a plurality of first wheel frames 35 and two first optical axes 341. Each first wheel frame 35 is arranged on the support beam 32 along the axial direction of the support beam 32. The first wheel frame 35 is provided with two upper and lower axle seats. The two first optical axes 341 are respectively inserted into the upper axle seat and the lower axle seat. The upper and lower rows of roller groups each include a plurality of rollers 34. At least one roller 34 is provided between the axle seats of two adjacent first wheel frames 35, and the roller 34 is sleeved outside the corresponding first optical axis 341.

[0046] The support beam 32 is a channel steel, and its notch faces the friction roller 8 . The angle wheel set 31 is connected to the inner groove bottom of the support beam 32 through a rear pad 36 .

[0047] The pressure wheel group 33 includes multiple pressure wheels 39, multiple second wheel frames 38 and a second optical axis 391. Each second wheel frame 38 is arranged on the support beam 32 along the axial direction of the support beam 32. The second wheel frame 38 is in a 7 shape. The upper part of the first wheel frame 35 is connected to the support beam 32. The second optical axis 391 is arranged at the lower end of the second wheel frame 38. There is more than one pressure wheel 39 between two adjacent second wheel frames 38. The pressure wheel 39 is sleeved outside the second optical axis 391. The pressure wheel group 33 is pressed on the outer top surface of the transfer belt 6 through the pressure wheel 39.

[0048] The upper part of the second wheel frame 38 is supported on the support beam 32 through the upper pad 37 and connected to the support beam 32 through bolts (not shown in the figure). The upper part of the second wheel frame 38 is provided with waist-shaped holes 381 corresponding to the bolts. After loosening the bolts, the second wheel frame can move left and right along the waist-shaped holes 381 to adjust the distance between the pressure wheel and the friction roller 8, and to adjust the wrap angle between the transfer belt and the friction roller 8.

[0049] The transfer plate 4 is provided with a plurality of friction-reducing wheels 42 at both ends (left and right ends) corresponding to the lateral moving direction thereof. The friction-reducing wheels 42 are arranged on a third wheel frame 41, and the third wheel frame 41 is connected to the transfer plate 4, wherein the third wheel frame 41 at one end of the transfer plate 4 away from the friction roller 8 is slightly tilted downward, so that the end of the transfer belt 6 extending out of the fixed bed frame assembly 10 is closer to the surface of the external bed body, so that the bedridden person on the external bed body can be more easily transferred to the movable bed board assembly 20.

[0050] The movable bed plate assembly 20 further includes a lower support plate 5 and a driven belt 7. The lower support plate 5 is arranged below the transfer belt 6 and connected to the support member. The driven belt 7 is wound outside the lower support plate 5. One end of the driven belt 7 away from the friction roller 8 is fixedly connected to the fixed bed frame assembly 10. A supporting wheel 9 is also provided on the lower support plate 5. The driven belt 7 is wound outside the lower support plate 5 and avoids the supporting wheel 9. One end of the driven belt 7 away from the friction roller 8 is fixedly connected to the fixed bed frame assembly 10. The supporting wheel 9 protrudes from the top surface of the lower support plate 5 and is higher than the top surface of the driven belt 7.

[0051] There are a plurality of driven belts 7 , each of which is spaced apart from the other. The supporting wheel 9 is located at a position outside the lower support plate 5 covered by the driven belt 7 .

[0052] The supporting wheels 9 are also provided on the front and rear edges of the lower support plate 5 .

[0053] The lower support plate 5 is provided with a wheel groove 52 corresponding to the supporting wheel 9, and axle seats 53 are provided at the front and rear ends of the wheel groove 52. A pin shaft 91 is provided at the center of the supporting wheel 9, and both ends of the pin shaft 91 extend out of the supporting wheel 9 and are supported on the axle seat 53; the height of the plane where the lower end of the supporting wheel 9 is located is higher than the height of the bottom surface of the driven belt 7.

[0054] The lower support plate 5 and the transfer plate 4 are connected by a clamping plate assembly, which includes an upper clamping block 61 and a lower clamping block 51 that are connected to each other, the upper clamping block 61 is connected to the transfer plate 4, and the lower clamping block 51 is connected to the lower support plate 5; the support member includes a motor frame 11 and a connecting arm 12 that are connected to each other, the transfer drive motor 1 is arranged on the motor frame 11, and the connecting arm 12 is transmission-connected to the lower clamping block 51 and the movable bed board driving mechanism 2.

[0055] The fixed bed frame assembly 10 includes a bed frame 101 and a bottom plate 102, the bottom plate 102 is arranged on the bed frame 101, and the movable bed board assembly 20 is located above the bottom plate 102; the two sides of the transfer bed body 100 are respectively provided with a fixed guardrail 50 and a movable guardrail 30, the fixed guardrail 50 is arranged on the side of the movable bed board assembly 20 where the belt clamping mechanism 3 is arranged, and the movable guardrail 30 is arranged upside down on the fixed bed frame assembly 10 and is located on the side opposite to the fixed guardrail 50. A cover shell 80 is arranged above the belt clamping mechanism 3, and the inner wall of the cover shell 80 is connected to the back of the support beam 32 through a connecting block 321, and the fixed guardrail 50 is arranged above the cover shell 80 and connected to the motor frame 11.

[0056] The movable bed board driving mechanism 2 includes a movable bed board driving motor 21, a synchronous shaft 23, a first synchronous pulley 24, a second synchronous pulley 27 and a synchronous belt 28. The movable bed board driving motor 21 and the synchronous shaft 23 are arranged at the bottom of the bed frame 101. The synchronous shaft 23 points forward and backward and rotates with the bed frame 101. The movable bed board driving motor 21 is connected to the synchronous shaft 23 by transmission. The first synchronous pulley 24 and the second synchronous pulley 27 are laterally distributed at the end of the bed frame 101. The synchronous belt 28 is sleeved outside the first synchronous pulley 24 and the second synchronous pulley 27. The first synchronous pulley 24 is connected to the synchronous shaft 23 by transmission. The top of the synchronous belt 28 is connected to the connecting arm 12 of the movable bed board assembly 20 by transmission.

[0057] The front and rear ends of the bed frame 101 are provided with support plate assemblies, and the support plate assemblies include an inner support plate 25 and an outer support plate 29. The first synchronous pulley 24, the second synchronous pulley 27 and the synchronous belt 28 are arranged between the inner support plate 25 and the outer support plate 29. A tensioning wheel 26 is also arranged between the inner support plate 25 and the outer support plate 29. The inner support plate 25 and the outer support plate 29 are both provided with upward and downward directional slide grooves 291 corresponding to the axle 261 of the tensioning wheel 26. The axle 261 and the slide groove 291 are slidably matched up and down, and a tensioning adjustment screw is provided at the bottom of the slide groove 291. The tensioning adjustment screw is screwed into the slide groove 291 from bottom to top and abuts against the bottom of the axle 261.

[0058] The bed frame 101 is provided with side guard plates 70 on its periphery, and upper outer covers 60 are provided at the front and rear ends of the bed frame 101 corresponding to the front and rear ends of the movable bed board assembly 20 . The ends of the transfer plate 4 and the lower support plate 5 are provided with inner covers 601 , and the upper outer cover 60 is covered on the inner cover 601 .

[0059] The rear end of the bed frame 101 is also provided with a footrest board 40 , and the footrest board 40 is provided with a control panel.

[0060] The transfer bed body 100 is mainly arranged on the transfer vehicle body 200 for use. Figure 1 and Figure 2 shown.

[0061] Its working principle is: when the transfer bed body 100 is Figure 1 When a person lies on the movable bed board assembly 20 in the state, if the person needs to be transferred to another bed body (hereinafter referred to as the "outer bed"), the movable guardrail 30 of the transfer bed body 100 is turned down, and the side provided with the movable guardrail 30 is moved close to the outer bed, and the bottom of the movable bed board assembly 20 is made to be almost flush with the bed surface of the outer bed, and then the movable bed board driving motor 21 is controlled to rotate forward, so that the movable bed board assembly 20 extends to the bed surface of the outer bed, and the movable bed board assembly 20 is moved to the outer bed. Figure 2Finally, on the one hand, the movable bed board driving motor 21 is controlled to reverse and retract the movable bed board assembly 20, and on the other hand, the transfer driving motor 1 is controlled to rotate forward, so that the person on the transfer belt 6 of the movable bed board assembly 20 is sent out of the movable bed board assembly 20 and falls onto the bed surface of the outer bed, thus completing the transfer from the transfer bed body 100 to the outer bed. At this time, the movable guardrail 30 can be turned up, and the person on the transfer bed body 100 can be transferred to other places with the help of the transfer vehicle body 200.

[0062] If the person lying on the outer bed needs to be transferred to the movable bed board assembly 20, Figure 1 The movable guardrail 30 of the transfer bed body 100 in the state is turned down, and the side with the movable guardrail 30 is moved close to the outer bed, and the bottom of the movable bed board assembly 20 is made almost flush with the bed surface of the outer bed, and then the movable bed board drive motor 21 is controlled to rotate forward and the transfer drive motor 1 is controlled to reverse, so that the movable bed board assembly 20 extends to the bed surface of the outer bed and is inserted between the lying person and the bed surface. At the same time, the lying person gradually moves onto the movable bed board assembly 20 under the action of the reversed transfer belt 6, and the movable bed board assembly 20 also gradually covers the bed surface of the outer bed at the same time, until the person is completely located on the movable bed board assembly 20, the movable bed board drive motor 21 is controlled to reverse and retract the movable bed board assembly 20, thereby completing the transfer from the outer bed to the transfer bed body 100.

[0063] When the movable bed board assembly 20 is extended, the driven belt rolls on the bed surface of the outer bed, so even if a bed sheet is provided on the bed surface, the bed sheet will not be rolled up.

Claims

1. An electric transfer bed, comprising a transfer bed body (100) provided with a fixed bed frame assembly (10) and a movable bed board assembly (20), the movable bed board assembly (20) being transmission-connected to the fixed bed frame assembly (10) via a movable bed board driving mechanism (2), the movable bed board driving mechanism (2) driving the movable bed board assembly (20) to move laterally on the fixed bed frame assembly (10), the movable bed board assembly (20) comprising a transfer plate (4), a transfer belt (6), a friction roller (8), and a belt clamping mechanism (3) , a transfer drive motor (1) and a support member, the transfer belt (6) is annular, the friction roller (8) and the transfer plate (4) are arranged transversely in the transfer belt (6), the transfer plate (4), the friction roller (8), the belt clamping mechanism (3) and the transfer drive motor (1) are arranged on the support member, the friction roller (8) is connected to the transfer drive motor (1) by transmission, the belt clamping mechanism (3) is arranged outside the transfer belt (6) and next to the friction roller (8), and the support member is connected to the movable bed plate drive mechanism (2) by transmission; characterized in that: The belt clamping mechanism (3) comprises an angle wheel group (31) and a pressure wheel group (33), the angle wheel group (31) comprising two upper and lower rows of roller groups, the upper and lower rows of roller groups being distributed vertically and located on the side of the friction roller (8) facing away from the transfer plate (4), and the pressure wheel group (33) being located on the side of the friction roller (8) facing the transfer plate (4) and pressed against the outer top surface of the transfer belt (6); The belt clamping mechanism (3) further comprises a support beam (32), the support beam (32) being arranged beside a side of the angle wheel assembly (31) facing away from the friction roller (8), and the angle wheel assembly (31) and the pressure wheel assembly (33) being arranged on the support beam (32) respectively; The angle wheel assembly (31) further comprises a plurality of first wheel frames (35) and two first optical axes (341), each of the first wheel frames (35) being arranged on the support beam (32) along the axis direction of the support beam (32), the first wheel frame (35) being provided with two upper and lower shaft seats, the two first optical axes (341) being respectively inserted into the upper shaft seat and the lower shaft seat, the upper and lower rows of roller assemblies each comprising a plurality of rollers (34), one or more of the rollers (34) being arranged between the shaft seats of two adjacent first wheel frames (35), and the rollers (34) being sleeved outside the corresponding first optical axes (341); The clamping wheel assembly (33) comprises a plurality of clamping wheels (39), a plurality of second wheel frames (38) and a second optical axis (391), each second wheel frame (38) being arranged on the support beam (32) along the axis direction of the support beam (32), the second wheel frame (38) being in a 7-shape, the upper portion of the first wheel frame (35) being directly supported on the support beam (32) or supported by an upper pad (37), and being connected to the support beam (32) by bolts, the upper portion of the wheel frame being provided with waist-shaped holes (381) corresponding to the bolts, the second optical axis (391) being arranged at the lower end of the second wheel frame (38), one or more clamping wheels (39) being arranged between two adjacent second wheel frames (38), the clamping wheels (39) being sleeved outside the second optical axis (391), and the clamping wheel assembly (33) being clamped on the outer top surface of the transfer belt (6) by the clamping wheels (39); The movable bed plate assembly (20) further comprises a lower support plate (5) and a driven belt (7), wherein the lower support plate (5) is arranged below the transfer belt (6) and connected to the support member, and the driven belt (7) is wound around the outside of the lower support plate (5), and one end of the driven belt (7) away from the friction roller (8) is fixedly connected to the fixed bed frame assembly (10); a plurality of driven belts (7) are provided, and each driven belt (7) is separated from each other. A supporting wheel (9) is also provided on the lower support plate (5), and the supporting wheel (9) is separated from the driven belt (7), and the supporting wheel (9) protrudes from the top surface of the lower support plate (5) and is higher than the top surface of the driven belt (7).

2. The electric transfer bed according to claim 1, characterized in that: The transfer plate (4) is provided with a plurality of friction-reducing wheels (42) at both ends corresponding to its transverse moving direction.

3. The electric transfer bed according to claim 1, characterized in that: The fixed bed frame assembly (10) comprises a bed frame (101) and a bottom plate (102), wherein the bottom plate (102) is arranged on the bed frame (101), and the movable bed board assembly (20) is located above the bottom plate (102); the movable bed board driving mechanism (2) comprises a movable bed board driving motor (21), a synchronous shaft (23), a first synchronous pulley (24), a second synchronous pulley (27) and a synchronous belt (28), wherein the movable bed board driving motor (21) and the synchronous shaft (23) are arranged at the bottom of the bed frame (101), and the movable bed board driving motor (21) and the synchronous shaft (23) are arranged at the bottom of the bed frame (101), and the movable bed board assembly (20) is located above the bottom plate (102); The step shaft (23) points forward and backward and is rotatably matched with the bed frame (101); the movable bed board driving motor (21) is transmission-connected to the synchronous shaft (23); the first synchronous belt pulley (24) and the second synchronous belt pulley (27) are laterally distributed at the end of the bed frame (101); the synchronous belt (28) is sleeved outside the first synchronous belt pulley (24) and the second synchronous belt pulley (27); the first synchronous belt pulley (24) is transmission-connected to the synchronous shaft (23); and the top of the synchronous belt (28) is transmission-connected to the support member of the movable bed board assembly (20).

4. The electric transfer bed according to claim 3, characterized in that: The transfer plate (4) is provided with a transfer drive motor (1) and a support member at both the front and rear ends. The support member comprises a motor frame (11) and a connecting arm (12) which are connected to each other. The friction roller (8) is rotatably matched with the motor frame (11). The transfer drive motor (1) is arranged on the motor frame (11). The connecting arm (12) is connected to the transfer plate (4) and the lower support plate (5) through a clamping plate assembly. The connecting arm (12) is also connected to a synchronous belt (28).

5. The electric transfer bed according to claim 3, characterized in that: The bed frame (101) is provided with support plate assemblies at both the front and rear ends, the support plate assemblies comprising an inner support plate (25) and an outer support plate (29), a first synchronous pulley (24), a second synchronous pulley (27) and a synchronous belt (28) are arranged between the inner support plate (25) and the outer support plate (29), a tensioning wheel (26) is also arranged between the inner support plate (25) and the outer support plate (29), the inner support plate (25) and the outer support plate (29) are both provided with upward and downward directional sliding grooves (291) corresponding to the wheel axle (261) of the tensioning wheel (26), the wheel axle (261) and the sliding groove (291) are slidably matched with each other up and down, a tensioning adjustment screw is provided at the bottom of the sliding groove (291), the tensioning adjustment screw is screwed into the sliding groove (291) from bottom to top and abuts against the bottom of the wheel axle (261).

6. The electric transfer bed according to claim 1, characterized in that: A fixed guardrail (50) and a movable guardrail (30) are respectively provided on both sides of the transfer bed body (100); the fixed guardrail (50) is arranged on one side of the movable bed frame (101) assembly on which a belt clamping mechanism (3) is provided; and the movable guardrail (30) is arranged on the fixed bed frame assembly (10) in an upside-down manner and is located on a side opposite to the fixed guardrail (50).

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