CN111297572A

CN111297572A - Electric transfer bed

Info

Publication number: CN111297572A
Application number: CN202010158861.8A
Authority: CN
Inventors: 吕鸿钧; 林尚雷; 黄乐军; 吕鸿雁; 黄勇军
Original assignee: Foshan Yuanyuan Automation Equipment Technology Co ltd
Current assignee: Lv Hongjun
Priority date: 2020-02-13
Filing date: 2020-03-09
Publication date: 2020-06-19
Also published as: CN212037985U; CN212214046U

Abstract

The invention relates to an electric transfer bed, which comprises a transfer bed body provided with a fixed bed frame assembly and a movable bed board assembly, wherein the movable bed board assembly comprises a transfer plate, a transfer belt, a friction roller, a belt clamping mechanism, a transfer driving motor and a supporting piece; the belt clamping mechanism comprises an angle wrapping wheel group and a pressing wheel group, the angle wrapping wheel group comprises an upper row of roller groups and a lower row of roller groups, the upper row of roller groups and the lower row of roller groups are positioned on one side of the friction roller, which is back to the transfer plate, and the pressing wheel group is positioned on one side of the friction roller, which faces the transfer plate, and is pressed on the top surface outside the transfer belt. According to the belt clamping mechanism, the upper and lower rows of roller groups are in contact with the transfer belt on the back of the friction roller, the transfer belt is pushed to be tightly attached to the friction roller, and the pressing roller group is combined to press the transfer belt of the friction roller towards the direction of the transfer plate, so that the wrap angle of the transfer belt and the friction roller is larger than 180 degrees, good contact is formed, the transmission of power is ensured to be in place, and meanwhile, the outer surface of the transfer belt is in rolling friction fit with the roller groups and the pressing roller groups, and the abrasion is small.

Description

Electric transfer bed

Technical Field

The invention relates to a medical apparatus, in particular to an electric transfer bed.

Background

In the medical field, often can meet the transfer problem of bed patient, traditional transport method adopts artifical transport, and patient's position change is great in handling, and not only medical personnel intensity of labour is big, still probably makes patient produce secondary damage, causes patient unnecessary misery. In order to overcome the defects, an electric transfer bed is available on the market, which comprises a transfer bed body provided with a fixed bedstead assembly and a movable bedplate assembly, wherein the movable bedplate assembly is in transmission connection with the fixed bedstead assembly through a movable bedplate driving mechanism, the movable bedplate driving mechanism drives the movable bedplate assembly to transversely move on the fixed bedstead assembly, the movable bedplate assembly comprises a transfer plate, a transfer belt, a friction roller, a U-shaped press block, a transfer driving motor and a supporting piece, the transfer belt is annular, the friction roller and the transfer plate are transversely arranged in the transfer belt, the transfer plate is arranged on the transfer belt, the friction roller, the U-shaped pressing block and the transfer driving motor are arranged on the supporting piece, the friction roller is in transmission connection with the transfer driving motor, the U-shaped pressing block is arranged outside the transfer belt and beside the friction roller, one side of the friction roller, back to the transfer plate, is located in the U-shaped pressing block and close to the inner wall of the U-shaped pressing block, and the supporting piece is in transmission connection with the movable bed board driving mechanism. Because the length of friction roller is about 2 meters, the friction roller is out of shape because of the atress, is difficult to guarantee to have reliable contact with the transfer area inner wall, so set up U type briquetting, avoid the internal surface in transfer area and friction roller to lose sufficient area of contact through the structure of U type briquetting, and lead to the transfer area to skid. However, since the outer surface of the transfer belt comes into contact with the inner wall surface of the U-shaped briquette, the surface of the transfer belt is easily scratched.

In addition, chinese patent No. CN201210066628.2 discloses a medical patient electric transfer bed at 7/18/2012, which includes a bed frame and a driving motor, wherein two ends of the bed frame are respectively installed with a synchronous belt, the synchronous belts are sleeved on the synchronous wheel trains, driving wheels in the synchronous wheel trains at the two ends are connected with the driving motor through universal joints, fixing members are fixedly installed on the synchronous belts, the fixing members are fixedly connected with roller shafts, rollers for reducing friction are sleeved on the roller shafts, a movable bed plate is fixedly connected with the roller shafts, a transmission belt with an annular cross section is sleeved on the movable bed plate and the roller shafts, end clamps for fixing the upper half part of the transmission belt are installed at the two ends of the bed frame near the moving-out side of the movable bed plate, the end clamps are connected with end clamp push rods which are connected with or separated from the upper ring surface of the transmission belt, and the end clamp push. When the medical patient electric transfer bed with the structure transfers a patient on a sickbed to the movable bed board, the movable bed board needs to be controlled to stretch out to the upper part of the sickbed and the operation of the transmission belt is controlled, and the transmission belt on the movable bed board cannot be contacted with a bed sheet, so that the bed sheet on the sickbed is prevented from being simultaneously rolled on the movable bed board. The transmission belt needs to leave the sickbed, and the movable bed board extends out of the outer side of the bed body of the electric transfer bed in a cantilever shape, so that the bed body is easy to topple, and moreover, one side of the body of a patient, which is close to the movable bed board, needs to be lifted up to be lapped on the transmission belt of the movable bed board, so that secondary injury is easy to be brought to the patient.

Disclosure of Invention

The invention aims to provide an electric transfer bed which has reasonable structure and long service life, is easier and safer to transfer for a lying person and prevents a bed sheet from being rolled up during transfer.

The purpose of the invention is realized as follows:

an electric transfer bed comprises a transfer bed body provided with a fixed bed frame assembly and a movable bed board assembly, wherein the movable bed board assembly is in transmission connection with 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 transversely move on the fixed bed frame assembly, the movable bed board assembly comprises a transfer plate, a transfer belt, a friction roller, a belt clamping mechanism, a transfer driving motor and a supporting piece, the transfer belt is annular, the friction roller and the transfer plate are transversely arranged in the transfer belt, the transfer plate, the friction roller, the belt clamping mechanism and the transfer driving motor are arranged on the supporting piece, the friction roller is in transmission connection with the transfer driving motor, the belt clamping mechanism is arranged outside the transfer belt and positioned beside the friction roller, and the supporting piece is in transmission connection with the movable bed board driving mechanism; the method is characterized in that: the belt clamping mechanism comprises an angle wrapping wheel group and a pressing wheel group, the angle wrapping wheel group comprises an upper row of roller groups and a lower row of roller groups, the upper row of roller groups and the lower row of roller groups are distributed up and down and are positioned on one side of the friction roller, which is back to the transfer plate, and the pressing wheel group is positioned on one side of the friction roller, which faces the transfer plate, and is pressed on the top surface outside the transfer belt.

The aim of the invention can also be solved by the following technical measures:

as a more specific scheme, the belt clamping mechanism further comprises a supporting beam, the supporting beam is arranged beside one side, back to the friction roller, of the corner wrapping wheel set, and the corner wrapping wheel set and the pressing wheel set are respectively arranged on the supporting beam.

As a further scheme, the wrapped-angle wheel set further comprises a plurality of first wheel frames and two first optical axes, each first wheel frame is arranged on the supporting beam along the axial direction of the supporting beam, each first wheel frame is provided with an upper shaft seat and a lower shaft seat, the two first optical axes are respectively inserted into the upper shaft seat and the lower shaft seat, the upper row of roller sets and the lower row of roller sets respectively comprise a plurality of rollers, more than one roller is arranged between the shaft seats of the two adjacent first wheel frames, and the rollers are sleeved outside the corresponding first optical axes.

As a further scheme, the pressing wheel set comprises a plurality of pressing wheels, a plurality of second wheel carriers and a second optical axis, each second wheel carrier is arranged on the supporting beam along the axial direction of the supporting beam, each second wheel carrier is 7-shaped, the upper portion of each first wheel carrier is directly connected with or connected with the supporting beam through an upper padding plate and connected with the supporting beam through a bolt, waist-shaped holes are formed in the upper portions of the wheel carriers corresponding to the bolts, the second optical axis is arranged at the lower end of each second wheel carrier, more than one pressing wheel is arranged between every two adjacent second wheel carriers, the pressing wheel is sleeved outside the second optical axis, and the pressing wheel set is pressed on the top surface outside the transfer belt through the pressing wheels. After the bolts are unscrewed, the second wheel frame can move left and right along the waist-shaped hole so as to adjust the distance between the pressing wheel and the friction roller and adjust the wrap angle between the transfer belt and the friction roller.

As a further scheme, a plurality of friction reducing wheels are respectively arranged at two ends of the transfer plate corresponding to the transverse moving direction of the transfer plate, so that the left end and the right end of the transfer plate are in rolling friction with the transfer belt.

As a further scheme, the movable bed board assembly further comprises a lower supporting board and a driven belt, the lower supporting board is arranged below the transfer belt and connected with the supporting piece, the driven belt is wound outside the lower supporting board, and one end of the driven belt, which is far away from the friction roller, is fixedly connected with the fixed bed frame assembly; the driven belts are arranged in a plurality of spaced-apart rows, the lower supporting plate is further provided with a supporting wheel, the supporting wheel is separated from the driven belts, and the supporting wheel protrudes out of the top surface of the lower supporting plate and is higher than the top surface of the driven belts.

As a further scheme, the fixed bed frame assembly comprises a bed frame and a bottom plate, the bottom plate is arranged on the bed frame, and the movable bed plate assembly is positioned above the bottom plate; the movable bed board driving mechanism comprises a movable bed board driving motor, a synchronizing shaft, a first synchronous belt wheel, a second synchronous belt wheel and a synchronous belt, wherein the movable bed board driving motor and the synchronizing shaft are arranged at the bottom of the bedstead, the synchronizing shaft points forward and backward and is in running fit with the bedstead, the movable bed board driving motor is in transmission connection with the synchronizing shaft, the first synchronous belt wheel and the second synchronous belt wheel are transversely distributed at the end part of the bedstead, the synchronous belt is sleeved outside the first synchronous belt wheel and the second synchronous belt wheel, the first synchronous belt wheel is in transmission connection with the synchronizing shaft, and the top of the synchronous belt is in transmission connection with a supporting piece of the movable bed board.

As a further scheme, both ends all are equipped with around the board and shift driving motor and support piece, and support piece includes interconnect's motor frame and linking arm, and friction roller and motor frame normal running fit shift driving motor set up on the motor frame, and the linking arm passes through splint subassembly and shifts board and bottom plate and be connected, and the linking arm still is connected with the hold-in range. Both ends of the friction roller are driven by a transfer driving motor, so that the power is more reliable.

As a further scheme, the front end and the rear end of the bed frame are respectively provided with a support plate assembly, the support plate assembly comprises an inner support plate and an outer support plate, a first synchronous pulley, a second synchronous pulley and a synchronous belt are arranged between the inner support plate and the outer support plate, a tension pulley is further arranged between the inner support plate and the outer support plate, the inner support plate and the outer support plate are respectively provided with a sliding groove which points up and down corresponding to a wheel shaft of the tension pulley, the wheel shaft is in up-down sliding fit with the sliding groove, the bottom of the sliding groove is provided with a tension adjusting screw, and the tension adjusting screw is screwed into the sliding groove from.

As a further scheme, both sides of the transfer bed body are respectively provided with a fixed guardrail and a movable guardrail, the fixed guardrail is arranged on one side of the movable bed frame assembly on which the belt clamping mechanism is arranged, and the movable guardrail is arranged on the fixed bed frame assembly in an up-and-down overturning manner and is positioned on one side opposite to the fixed guardrail.

The invention has the following beneficial effects:

(1) this kind of belt clamping mechanism of electronic transfer bed contacts through the transfer area at upper and lower two rows of roller trains and the friction roller back, and pushes away the transfer area to paste tightly with the friction roller, and the transfer area that combines pinch roller group to the friction roller towards the transfer board direction compresses tightly, makes the transfer area be greater than 180 degrees with the wrap angle of friction roller, thereby forms good contact, ensures that the transmission of power targets in place, and simultaneously, transfer takes the surface and the roller train, compresses tightly the cooperation of wheelset rolling friction, and its wearing and tearing are little.

(2) This kind of electronic transfer bed's transfer board below still is equipped with the bottom plate, and the bottom plate overcoat has the driven area, and outside the fixed bedstead assembly was stretched out simultaneously with the transfer board to the bottom plate, the bottom plate can bear and put on the bed body of outside, and the driven area rolls like the track on the bed body sheet of outside, so, can not curl up the sheet, moreover, through such design, can make transfer board and driven area be close to the bed surface of the outside bed body more, more easily, shift the people on bed surface to the activity bed board assembly more safely.

(3) The transfer belt of the electric transfer bed is matched with the lower supporting plate in a rolling mode through the supporting wheel, so that the rotating resistance of the transfer belt is reduced.

Drawings

FIG. 1 is a schematic view of the structure of a transfer vehicle according to an embodiment of the present invention.

Fig. 2 is a schematic view of another angle and the extended state of the movable bed board assembly shown in fig. 1.

FIG. 3 is an exploded view of the present invention.

Fig. 4 is a schematic view of a part a of the enlarged structure in fig. 3.

Fig. 5 is a schematic view of a part of the enlarged structure at B in fig. 3.

Fig. 6 is a schematic view of the total decomposition structure of the movable bed plate of the present invention.

Fig. 7 is an enlarged schematic view of the structure at C in fig. 6.

Fig. 8 is a schematic view of a reverse partial structure of the lower support plate of the present invention.

FIG. 9 is a schematic view of another angle connection structure according to the present invention.

Fig. 10 is a schematic top view of the foldable movable bed board assembly of the present invention.

Fig. 11 is a schematic sectional view of fig. 10 taken along line D-D.

Fig. 12 is an enlarged schematic view of G in fig. 11.

FIG. 13 is a schematic cross-sectional view of E-E of FIG. 10.

Fig. 14 is an enlarged schematic view of H in fig. 13.

Fig. 15 is a schematic sectional view of fig. 10 taken along line F-F.

Fig. 16 is an enlarged schematic view of the structure at the point I in fig. 15.

Fig. 17 is a schematic top view of the movable bed board assembly in an extended state.

Fig. 18 is an enlarged view of the structure at J-J of fig. 17.

Fig. 19 is an enlarged view of the structure at K in fig. 18.

Fig. 20 is an enlarged schematic view of the structure at L in fig. 19.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1-20, an electric transfer bed comprises 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 in transmission connection with 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 transversely on the fixed bed frame assembly 10, the movable bed board assembly 20 comprises a transfer plate 4, a transfer belt 6, a friction roller 8, a belt clamping mechanism 3, a transfer driving motor 1 and a support member, the transfer belt 6 is in a ring shape, the friction roller 8 and the transfer plate 4 are transversely arranged in the transfer belt 6, the transfer plate 4, the friction roller 8, the belt clamping mechanism 3 and the transfer driving motor 1 are arranged on the support member, the friction roller 8 is in transmission connection with the transfer driving motor 1, the belt clamping mechanism 3 is arranged outside the transfer belt 6 and beside the friction roller 8, the supporting piece is in transmission connection with the movable bed board driving mechanism 2; the belt clamping mechanism 3 comprises a wrap angle wheel group 31 and a pressing wheel group 33, the wrap angle wheel group 31 comprises an upper row of roller groups and a lower row of roller groups, the upper row of roller groups and the lower row of roller groups are vertically distributed and are positioned on one side of the friction roller 8, which is back to the transfer plate 4, and the pressing wheel group 33 is positioned on one side of the friction roller 8, which faces the transfer plate 4, and is pressed on the outer top surface of the transfer belt 6.

And the front end and the rear end of the transfer plate 4 are provided with a transfer driving motor 1 and a supporting piece.

The belt clamping mechanism 3 further comprises a supporting beam 32, the supporting beam 32 is arranged beside one side of the cornerite wheel set 31, which faces away from the friction roller 8, and the cornerite wheel set 31 and the pressing wheel set 33 are respectively arranged on the supporting beam 32.

The wrapped-angle wheel set 31 further comprises a plurality of first wheel frames 35 and two first optical axes 341, each first wheel frame 35 is arranged on the supporting beam 32 along the axial direction of the supporting beam 32, the first wheel frame 35 is provided with an upper shaft seat and a lower shaft seat, the two first optical axes 341 are respectively inserted into the upper shaft seat and the lower shaft seat, the upper and lower rows of roller sets respectively comprise a plurality of rollers 34, more than one roller 34 is arranged between the shaft seats of the two adjacent first wheel frames 35, and the rollers 34 are sleeved outside the corresponding first optical axes 341.

The supporting beam 32 is a channel steel, the notch of the channel steel faces the direction of the friction roller 8, and the cornerite wheel set 31 is connected with the inner groove bottom of the supporting beam 32 through a back cushion plate 36.

The pressing wheel set 33 comprises a plurality of pressing wheels 39, a plurality of second wheel frames 38 and a second optical axis 391, each second wheel frame 38 is arranged on the supporting beam 32 along the axial direction of the supporting beam 32, each second wheel frame 38 is 7-shaped, the upper part of each first wheel frame 35 is connected with the supporting beam 32, the second optical axis 391 is arranged at the lower end of each second wheel frame 38, more than one pressing wheel 39 is arranged between every two adjacent second wheel frames 38, the pressing wheels 39 are sleeved outside the second optical axis 391, and the pressing wheel set 33 is pressed on the outer top surface of the transfer belt 6 through the pressing wheels 39.

The upper portion of the second wheel frame 38 is supported on the support beam 32 by an upper cushion plate 37 and connected to the support beam 32 by bolts (not shown), and the upper portion of the second wheel frame 38 is provided with a waist-shaped hole 381 corresponding to the bolts. After the bolts are unscrewed, the second wheel frame can move left and right along the waist-shaped hole 381 to adjust the distance between the pressing wheel and the friction roller 8 and adjust the wrap angle between the transfer belt and the friction roller 8.

The transfer plate 4 is provided with a plurality of friction reducing wheels 42 corresponding to both ends (left and right ends) in the transverse moving direction thereof, respectively. The friction reducing wheel 42 is arranged on the third wheel frame 41, the third wheel frame 41 is connected with the transfer plate 4, wherein the third wheel frame 41 at one end of the transfer plate 4 far away from the friction roller 8 is slightly inclined downwards, 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, and a bedridden person on the external bed body can be transferred onto the movable bed plate assembly 20 more easily.

The movable bed board assembly 20 further comprises a lower supporting board 5 and a driven belt 7, the lower supporting board 5 is arranged below the transfer belt 6 and connected with the supporting piece, the driven belt 7 is wound outside the lower supporting board 5, and one end, far away from the friction roller 8, of the driven belt 7 is fixedly connected with the fixed bed frame assembly 10. The lower supporting plate 5 is also provided with a supporting wheel 9, the driven belt 7 is wound outside the lower supporting plate 5 and avoids the supporting wheel 9, one end of the driven belt 7 far away from the friction roller 8 is fixedly connected with a fixed bedstead assembly 10, and the supporting wheel 9 protrudes out of the top surface of the lower supporting plate 5 and is higher than the top surface of the driven belt 7.

The driven belts 7 are provided in plural numbers, the driven belts 7 are spaced apart from each other, and the support wheels 9 are located at positions other than the positions where the driven belts 7 cover the lower pallet 5.

The front edge and the rear edge of the lower supporting plate 5 are also provided with the supporting wheels 9.

The lower supporting plate 5 is provided with a wheel groove 52 corresponding to the supporting wheel 9, the front end and the rear end of the wheel groove 52 are provided with shaft seats 53, the center of the supporting wheel 9 is provided with a pin shaft 91, and two ends of the pin shaft 91 extend out of the supporting wheel 9 and are connected to the shaft seats 53; the lower end of the supporting wheel 9 is positioned on a plane with a height higher than that of the bottom surface of the driven belt 7.

The lower supporting plate 5 is connected with the transfer plate 4 through a clamping plate assembly, the clamping plate assembly comprises an upper clamping block 61 and a lower clamping block 51 which are connected with each other, the upper clamping block 61 is connected with the transfer plate 4, and the lower clamping block 51 is connected with the lower supporting plate 5; the supporting piece comprises a motor frame 11 and a connecting arm 12 which are connected with each other, the transfer driving motor 1 is arranged on the motor frame 11, and the connecting arm 12 is in transmission connection with the lower clamping block 51 and the movable bed board driving mechanism 2.

The fixed bed frame assembly 10 comprises 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 positioned 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 one side of the movable bed board assembly 20 on which the belt clamping mechanism 3 is arranged, and the movable guardrail 30 is arranged on the fixed bed frame assembly 10 in a vertically-reversed manner and is located on one side opposite to the fixed guardrail 50. The upper part of the belt clamping mechanism 3 is provided with a housing 80, the inner wall of the housing 80 is connected with the back surface of the supporting beam 32 through a connecting block 321, and the fixed guardrail 50 is arranged above the housing 80 and connected with the motor frame 11.

The movable bed board driving mechanism 2 comprises a movable bed board driving motor 21, a synchronizing shaft 23, a first synchronous belt pulley 24, a second synchronous belt pulley 27 and a synchronous belt 28, the movable bed board driving motor 21 and the synchronizing shaft 23 are arranged at the bottom of the bed frame 101, the synchronizing shaft 23 points forwards and backwards and is in running fit with the bed frame 101, the movable bed board driving motor 21 is in transmission connection with the synchronizing shaft 23, the first synchronous belt pulley 24 and the second synchronous belt pulley 27 are transversely distributed at the end part 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 in transmission connection with the synchronizing shaft 23, and the top of the synchronous belt 28 is in transmission connection with the connecting arm 12 of the movable bed board.

The front end and the rear end of the bedstead 101 are provided with support plate components, the support plate components comprise 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 tension pulley 26 is further 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 respectively provided with a sliding groove 291 which points up and down corresponding to a wheel shaft 261 of the tension pulley 26, the wheel shaft 261 is in up-down sliding fit with the sliding groove 291, and a tension adjusting screw is arranged at the bottom of the sliding groove 291 and screwed from bottom to top into the sliding groove 291 and abuts against the bottom of.

The periphery of the bed frame 101 is provided with side guard plates 70, the front and rear ends of the bed frame 101 are provided with upper outer covers 60 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 covers 60 cover the inner covers 601.

The rear end of the bedstead 101 is also provided with a bed tail handrail plate 40, and the bed tail handrail plate 40 is provided with a control panel.

The transfer bed body 100 is mainly disposed on a transfer car body 200 for use, as shown in fig. 1 and 2.

The working principle is as follows: when the transfer bed body 100 lies on a person on the movable bed board assembly 20 in the state shown in fig. 1, if the person needs to be transferred to another bed body (hereinafter referred to as an "external bed"), the movable guard rails 30 of the transfer bed body 100 are turned down, one side provided with the movable guard rails 30 is close to the external bed, the bottom of the movable bed board assembly 20 is approximately level with the bed surface of the external 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 external bed, as shown in fig. 2. Finally, on one hand, the movable bed board driving motor 21 is controlled to reversely rotate to withdraw the movable bed board assembly 20, and on the other hand, the transfer driving motor 1 is simultaneously controlled to forwardly rotate, 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, and the transfer from the transfer bed body 100 to the outer bed is completed. At this time, the movable fence 30 may be turned up and the person who transfers the bed body 100 may be transported to another place by the trolley body 200.

When a person lying on the external bed needs to be transferred onto the movable bed board assembly 20, the movable guardrail 30 of the transfer bed body 100 in the state of figure 1 is turned down, and the side provided with the movable guardrail 30 is close to the side of the external bed, so that the bottom of the movable bed board assembly 20 is approximately equal to the bed surface of the external bed, then simultaneously controlling the movable bed board driving motor 21 to rotate forwards and the transfer driving motor 1 to rotate backwards, so that the movable bed board assembly 20 extends to the bed surface of the external bed and is inserted between the lying person and the bed surface, meanwhile, the lying person gradually moves to the movable bed board assembly 20 under the action of the reversed transfer belt 6, the movable bed board assembly 20 also gradually covers the bed surface of the external bed until the people is completely positioned on the movable bed board assembly 20, the movable bed board driving motor 21 is controlled to reversely rotate to withdraw the movable bed board assembly 20, namely, the transfer from the outer bed to the transfer bed body 100 is completed.

In the process of extending the movable bed board assembly 20, the driven belt rolls on the bed surface of the external bed, so that the bed sheet cannot be rolled up even if the bed sheet is arranged on the bed surface.

Claims

1. An electric transfer bed comprises a transfer bed body (100) provided with a fixed bed frame assembly (10) and a movable bed board assembly (20), wherein the movable bed board assembly (20) is in transmission connection with 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 transversely move on the fixed bed frame assembly (10), the movable bed board assembly (20) comprises a transfer plate (4), a transfer belt (6), a friction roller (8), a belt clamping mechanism (3), a transfer driving motor (1) and a support piece, the transfer belt (6) is annular, the friction roller (8) and the transfer plate (4) are transversely arranged in the transfer belt (6), the transfer plate (4), the friction roller (8), the belt clamping mechanism (3) and the transfer driving motor (1) are arranged on the support piece, and the friction roller (8) is in transmission connection with the transfer driving motor (1), the belt clamping mechanism (3) is arranged outside the transfer belt (6) and beside the friction roller (8), and the supporting piece is in transmission connection with the movable bed board driving mechanism (2); the method is characterized in that: the belt clamping mechanism (3) comprises an angle wrapping wheel set (31) and a pressing wheel set (33), the angle wrapping wheel set (31) comprises an upper row of roller sets and a lower row of roller sets, the upper row of roller sets and the lower row of roller sets are distributed up and down and are located on one side, back to the transfer plate (4), of the friction roller (8), and the pressing wheel set (33) is located on one side, facing the transfer plate (4), of the friction roller (8) and is pressed on the outer top surface of the transfer belt (6).

2. The motorized transfer bed of claim 1, wherein: the belt clamping mechanism (3) further comprises a supporting beam (32), the supporting beam (32) is arranged beside one side, back to the friction roller (8), of the corner wrapping wheel set (31), and the corner wrapping wheel set (31) and the pressing wheel set (33) are respectively arranged on the supporting beam (32).

3. The motorized transfer bed of claim 2, wherein: the cornerite wheelset (31) further comprises a plurality of first wheel frames (35) and two first optical axes (341), each first wheel frame (35) is arranged on the supporting beam (32) along the axial direction of the supporting beam (32), the first wheel frames (35) are provided with an upper shaft seat and a lower shaft seat, the two first optical axes (341) are respectively inserted into the shaft seats above and below, the upper and lower two rows of roller sets respectively comprise a plurality of rollers (34), more than one roller (34) is arranged between the shaft seats of the two adjacent first wheel frames (35), and the rollers (34) are sleeved outside the corresponding first optical axes (341).

4. The motorized transfer bed of claim 2 or 3, wherein: the pressing wheel set (33) comprises a plurality of pressing wheels (39), a plurality of second wheel carriers (38) and a second optical axis (391), each second wheel carrier (38) is arranged on the supporting beam (32) along the axial direction of the supporting beam (32), each second wheel carrier (38) is 7-shaped, the upper portion of each first wheel carrier (35) is directly connected with the supporting beam (32) or connected with the supporting beam (32) through an upper backing plate (37), waist-shaped holes (381) are formed in the upper portions of the wheel carriers corresponding to the bolts, the second optical axis (391) is arranged at the lower end of each second wheel carrier (38), more than one pressing wheel (39) is arranged between every two adjacent second wheel carriers (38), the pressing wheels (39) are sleeved outside the second optical axis (391), and the pressing wheel set (33) is pressed on the outer top surface of the transfer belt (6) through the pressing wheels (39).

5. The motorized transfer bed of claim 1, wherein: the two ends of the transfer plate (4) corresponding to the transverse moving direction are respectively provided with a plurality of friction reducing wheels (42).

6. The motorized transfer bed of claim 1, wherein: the movable bed board assembly (20) further comprises a lower supporting plate (5) and a driven belt (7), the lower supporting plate (5) is arranged below the transfer belt (6) and connected with the supporting piece, the driven belt (7) is wound outside the lower supporting plate (5), and one end, far away from the friction roller (8), of the driven belt (7) is fixedly connected with the fixed bed frame assembly (10); the driven belts (7) are arranged in a plurality of spaced-apart manners, the lower supporting plate (5) is further provided with a supporting wheel (9), the supporting wheel (9) is separated from the driven belts (7), and the supporting wheel (9) protrudes out of the top surface of the lower supporting plate (5) and is higher than the top surface of the driven belts (7).

7. The motorized transfer bed of claim 6, wherein: the fixed bed frame assembly (10) comprises 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 positioned above the bottom plate (102); the movable bed board driving mechanism (2) comprises a movable bed board driving motor (21), a synchronizing shaft (23), a first synchronous belt wheel (24), a second synchronous belt wheel (27) and a synchronous belt (28), the movable bed board driving motor (21) and the synchronizing shaft (23) are arranged at the bottom of a bed frame (101), the synchronous shaft (23) points forwards and backwards and is in running fit with the bed frame (101), the movable bed board driving motor (21) is in transmission connection with the synchronizing shaft (23), the first synchronous belt wheel (24) and the second synchronous belt wheel (27) are transversely distributed at the end part of the bed frame (101), the synchronous belt (28) is sleeved outside the first synchronous belt wheel (24) and the second synchronous belt wheel (27), the first synchronous belt wheel (24) is in transmission connection with the synchronizing shaft (23), and the top of the synchronous belt (28) is in transmission connection with a supporting piece of the movable bed board assembly (20).

8. The motorized transfer bed of claim 7, wherein: the transfer board (4) both ends all are equipped with around and transfer driving motor (1) and support piece, and support piece includes interconnect's motor frame (11) and linking arm (12), and friction roller (8) and motor frame (11) normal running fit shift driving motor (1) and set up on motor frame (11), and linking arm (12) are connected with transfer board (4) and bottom plate (5) through splint subassembly, and linking arm (12) still are connected with hold-in range (28).

9. The motorized transfer bed of claim 7, wherein: the front end and the rear end of the bedstead (101) are respectively provided with a support plate component, each support plate component comprises 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 tension pulley (26) is further 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 respectively provided with a sliding groove (291) which points up and down corresponding to a wheel shaft (261) of the tension pulley (26), a wheel shaft (261) and the sliding groove (291) are in up-and-down sliding fit, the bottom of the sliding groove (291) is provided with a tension adjusting screw, and the tension adjusting screw is screwed up like the sliding groove (291) from.

10. The motorized transfer bed of claim 1, wherein: the transfer bed is characterized in that 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 one side of the movable bed frame (101) on which a belt clamping mechanism (3) is arranged, and the movable guardrail (30) is arranged on the fixed bed frame assembly (10) in an up-and-down overturning manner and is positioned on one side opposite to the fixed guardrail (50).