CN211433729U - Multifunctional push bed - Google Patents

Abstract

The utility model relates to a multifunctional pushing bed, it includes the bedstead, a power device, master control circuit and battery, the bedstead includes bedstead and lower bedstead, go up and be connected through elevating gear between bedstead and the lower bedstead, a power device, master control circuit and battery setting are on the bedstead down, lower bedstead bottom is equipped with the truckle, power device includes two sets of travel drive mechanism, travel drive mechanism includes drive wheel and travel drive motor, two sets of travel drive mechanism's drive wheel is located the bedstead bottom, and control the distribution, the drive wheel is connected with the travel drive motor transmission, travel drive motor and master control circuit electric connection. The multifunctional manipulator has the functions of electric power assistance and lifting control of the upper bed frame, and the two driving wheels of the electric power assistance are respectively controlled by one walking driving motor, so that the two driving wheels can be independently controlled, and when the two driving wheels are synchronous, the manipulator can be driven linearly; when the two driving wheels run at different speeds, the manipulator can steer and walk.

Description

Multifunctional push bed

technical field

The utility model relates to a carrier, in particular to a multifunctional push bed.

Background technique

The current medical transfer bed mainly includes a lower bed frame, an upper bed frame and a universal caster, the universal caster is arranged at the bottom of the lower bed frame, and the upper bed frame is arranged above the lower bed frame. The upper bed frame is mainly used for placing mattresses and lying on the patient, and the lower bed frame can be used for placing medical instruments and equipment. Therefore, when the medical-care transfer bed carries people, it is relatively laborious to push the medical-care transfer bed, and it is difficult to control the direction of walking when it is operated by one person. In addition, because patients with limited mobility often need to do more inspections during hospitalization, and different testing items are located in different areas, existing hospitals generally need to arrange two nurses (or arrange one nurse and require the patient's family to accompany them) Transferring patients to different testing areas through medical transfer beds for testing consumes a lot of manpower and increases hospitalization costs.

In addition, the main function of the current medical transfer bed is to transfer patients with inconvenience on the ward bed to other departments. Because the medical transfer bed is not necessarily close to the ward bed, it is difficult for the patient to pass the bed. Moreover, because the upper bed frame is high, it is not conducive for the patient to go to bed.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a multifunctional push bed with reasonable structure, electric power assist, and electric lifting function.

The purpose of this utility model is achieved in this way:

A multifunctional push bed, comprising a bed frame, a power unit, a main control circuit and a battery, the bed frame includes an upper bed frame and a lower bed frame, the upper bed frame and the lower bed frame are connected by a lifting device, the power unit, the main control circuit and the lower bed frame are connected. The battery is arranged on the lower bed frame, and the bottom of the lower bed frame is provided with casters. It is characterized in that: the power device includes two sets of walking driving mechanisms, the walking driving mechanism includes driving wheels and a walking driving motor, and the driving wheels of the two sets of walking driving mechanisms are located at The bottom of the bed frame is distributed on the left and the right. The driving wheel is connected with the traveling drive motor, and the traveling drive motor is electrically connected with the main control circuit. The upper bed frame is provided with handrails, and the handrails are provided with control signals for the main control circuit. The controller is electrically connected to the main control circuit; and/or, it also includes a remote controller for sending control signals to the main control circuit, and the remote controller is electrically connected to the main control circuit.

The purpose of this utility model can also adopt the following technical measures to solve:

As a more specific solution, the power device further includes a wheel frame, and the two sets of walking driving mechanisms are arranged at the bottom of the wheel frame; the wheel frame is arranged on the bed frame for horizontal rotation, and the bed frame is provided with a wheel frame for controlling the rotation of the wheel frame. The steering driving mechanism includes a steering driving motor, and the steering driving motor is electrically connected with the main control circuit.

As a further solution, the walking drive mechanism further includes a motor seat and a shaft seat, the motor seat and the shaft seat are arranged at the bottom of the wheel frame, the walking driving motor is arranged on the motor seat, and a rotating shaft is rotated on the shaft seat, and the rotating shaft One end of the shaft is drive-connected with the drive wheel, and the other end of the shaft is drive-connected with the traveling drive motor through the first pulley drive pair.

As a further solution, the steering drive mechanism includes a steering drive motor, a gear pair and a gear frame, the gear frame is arranged on the bed frame, the steering drive motor and the gear pair are connected in a transmission and are arranged on the gear frame; the bed frame corresponds to A steering wheel is arranged above the wheel frame, and a steering drive tooth slot is arranged on the outer periphery of the steering wheel, and the steering drive tooth slot meshes with the gear pair.

As a further solution, the gear frame is also provided with a reduction box, the gear pair includes a pinion and a large gear, the steering drive motor is connected to the pinion through the reduction box, the pinion meshes with the large gear, and the large gear engages the steering drive cogging of the wheel carrier.

As a further solution, the lifting device includes two sets of strut mechanisms and a lift drive mechanism, the two sets of strut mechanisms are respectively arranged at the front and rear ends of the bed frame, and the strut mechanisms include diagonal struts and lateral slides. The upper end of the sling is hinged with the upper bed frame, the lower end of the diagonal strut is hinged with the lateral sliding seat, and the lateral sliding seat is slid back and forth on the lower bed frame; the lifting driving mechanism includes a lifting driving motor and a sliding seat transmission pair for pushing the movement of the lateral sliding seat, The elevating drive motor is arranged on the lower bed frame, and is connected with the transmission pair of the sliding seat, and the elevating drive motor is electrically connected with the main control circuit. Alternatively, the lifting device includes an upper leg tube, a lower leg tube, a screw rod and a screw sleeve, the screw rod is rotatably arranged in the lower leg tube, the screw sleeve is arranged in the upper leg tube and is threadedly connected with the screw rod, and the cross section of the upper leg tube and the lower leg tube is rectangular. , the upper leg tube is sleeved with the lower leg tube and slides in a straight line, the upper end of the upper leg tube is connected with the upper bed frame, and the lower end of the lower leg tube is connected with the lower bed frame. Drive motor linkage.

As a further solution, the sliding seat transmission pair includes a synchronizing shaft and two sets of lead screw transmission pairs. The synchronizing shaft is rotatably arranged on the lower bed frame and points forward and backward, and the synchronizing shaft passes between the wheel frame and the steering wheel. The screw drive pair includes a screw rod and a nut that are threadedly connected. The screw rod is rotatably arranged on the lower bed frame and points forward and backward, and the nut is connected with the transverse sliding seat; The synchronizing shaft is also drive-connected with the lift drive motor.

As a further solution, a vertical guide telescopic rod is also arranged between the upper bed frame and the lower bed frame. The vertical guide telescopic rod includes a fixed rod and a movable sleeve. The fixed rod and the movable sleeve are both vertically arranged, and the lower end of the fixed rod is connected to the lower bed frame. The upper end of the fixed rod is sleeved with the movable sleeve and is vertically slidingly matched with each other, and the upper end of the fixed rod is connected with the upper bed frame.

As a further solution, two sets of linear guide devices are arranged between the steering wheel and the wheel frame, and the two sets of linear guide devices are evenly distributed around the rotation center of the steering wheel and are located on the left and right sides of the synchronizing shaft; the linear guide devices include Longitudinal guide rod and longitudinal guide sleeve, the upper end of the longitudinal guide rod is fixedly connected with the steering wheel, the lower end of the longitudinal guide rod passes through the longitudinal guide sleeve, the longitudinal guide sleeve is arranged on the wheel frame, and is vertically slidably matched with the longitudinal guide rod.

As a further solution, there are more than two adjusting bolts beside the linear guide device, the adjusting bolts pass through the wheel frame from bottom to top, and are threadedly connected with the wheel frame, and the upper end of the adjusting bolt is fixedly abutted or rotated with the steering wheel; A compression spring is also sleeved on the outside of the adjusting bolt, and the compression spring is crimped between the steering wheel and the wheel frame.

The beneficial effects of the present utility model are as follows:

(1) This multi-functional push bed has both electric power assist and upper bed frame lifting control functions, and the two driving wheels of the electric power assist are controlled by a walking drive motor respectively. Therefore, the two driving wheels can be controlled independently. When the wheels are synchronized, the push bed can be driven in a straight line; when the two driving wheels run at differential speeds, the push bed can be turned and walked.

(2) This multifunctional push bed can directly control the steering of the power unit through the steering drive mechanism, that is, to realize the steering of the bed frame.

(3) The steering drive mechanism of this multifunctional push bed is driven by electricity, which makes the operation more convenient.

(4) The steering drive mechanism of this multifunctional push bed and the steering wheel above the power unit are driven by cogging, which can make the power unit rotate 90 degrees. At this time, the power unit can be activated to realize the lateral movement of the bed frame.

(5) The upper bed frame of this multi-functional push bed is supported by two sets of front and rear strut mechanisms, and the two sets of strut mechanisms are supported by a set of lift drive mechanisms. Therefore, the two sets of strut mechanisms move synchronously, and the support On both ends of the bed frame, the lifting is more stable and reliable.

(6) There is also a vertical guide telescopic rod between the upper bed frame and the lower bed frame of this multifunctional push bed, so that the upper bed frame will not shake due to the virtual position of the match.

(7) This multifunctional push bed is provided with elastic parts between the wheel frame and the bed frame. The elastic parts make the wheel frame move downward, and the driving wheel has better contact with the ground.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is another perspective structural diagram of FIG. 1 .

FIG. 3 is a schematic view of the front structure of the utility model.

FIG. 4 is a schematic view of the cross-sectional structure taken along the line A-A of FIG. 3 .

FIG. 5 is a schematic diagram of the left side view of the present utility model.

FIG. 6 is a schematic diagram of the cross-sectional structure taken along the line B-B of FIG. 5 .

FIG. 7 is a schematic view of the cross-sectional structure taken along the line C-C of FIG. 5 .

FIG. 8 is a schematic view of the D-D cross-sectional structure of FIG. 5 .

FIG. 9 is a schematic view of the cross-sectional structure taken along the line E-E of FIG. 5 .

Figure 10 is a schematic diagram of the connection structure between the lower bed frame of the present invention and the power device after turning 90 degrees.

FIG. 11 is a schematic structural diagram of the steering driving mechanism in the present invention.

FIG. 12 is another perspective structural diagram of FIG. 11 .

FIG. 13 is a schematic top view of the structure of the power unit, the steering wheel and the gantry after being connected in the utility model.

FIG. 14 is a schematic diagram of the cross-sectional structure along the line G-G of FIG. 13 .

FIG. 15 is a schematic view of the H-H cross-sectional structure of FIG. 13 .

16 is a schematic diagram of the connection structure of the power device and the steering wheel in the present invention.

FIG. 17 is another perspective structural diagram of FIG. 16 .

FIG. 18 is a schematic front view of the upper bed frame of the present invention after it has been lowered.

FIG. 19 is a schematic structural diagram of another embodiment of the present invention.

FIG. 20 is a schematic structural diagram of the upper bed frame of FIG. 19 after being lowered.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

1 to 17, a multifunctional push bed includes a bed frame 100, a power unit 200, a main control circuit and a battery, the bed frame 100 includes an upper bed frame 22 and a lower bed frame 10, and the upper bed frame 22 and the lower bed The frames 10 are connected by a lifting device. The power device 200, the main control circuit and the battery are arranged on the lower bed frame 10. The bottom of the lower bed frame 10 is provided with casters 11. The power device 200 includes two sets of walking driving mechanisms, the walking driving mechanism Including a driving wheel 1 and a walking driving motor 2, the driving wheels 1 of the two sets of walking driving mechanisms are located at the bottom of the bed frame 100, and are distributed one left and one right. The circuit is electrically connected; the upper bed frame 22 is provided with an armrest, and the armrest is provided with a controller for controlling signals to the main control circuit, and the controller is electrically connected with the main control circuit, which is not shown in the figure.

The power device 200 also includes a wheel frame 3, and the two sets of walking driving mechanisms are arranged at the bottom of the wheel frame 3; the wheel frame 3 is horizontally rotatably arranged on the bed frame 100, and the bed frame 100 is provided with a wheel frame for controlling the wheel frame 3. The rotating steering driving mechanism 300 includes a steering driving motor 24, and the steering driving motor 24 is electrically connected with the main control circuit.

The walking drive mechanism also includes a motor seat 21 and a shaft seat 17, the motor seat 21 and the shaft seat 17 are arranged at the bottom of the wheel frame 3, the walking driving motor 2 is arranged on the motor seat 21, and the shaft seat 17 is rotated with a A rotating shaft 16, one end of the rotating shaft 16 is drivingly connected with the driving wheel 1, and the other end of the rotating shaft 16 is drivingly connected with the traveling drive motor 2 through the first pulley transmission pair. The first pulley transmission pair includes a first traveling drive gear 20, a first synchronous pulley 18 and a first synchronous belt 19, the first traveling drive gear 20 is arranged on the motor shaft of the traveling drive motor 2, and the first synchronous pulley 18 is arranged on the other end of the rotating shaft 16 , and the first timing belt 19 is wound around the first traveling drive gear 20 and the first timing pulley 18 .

The steering driving mechanism 300 includes a steering driving motor 24, a gear pair and a gear frame 26, the gear frame 26 is arranged on the bed frame 100, and the steering driving motor 24 is connected to the gear pair and arranged on the gear frame 26; the bed A steering wheel 4 is provided above the frame 100 corresponding to the wheel frame 3 . The steering wheel 4 is provided with a steering drive cogging on the outer periphery, and the steering driving cogging is engaged with the gear pair.

The gear frame 26 is also provided with a reduction box 25, the gear pair includes a pinion 27 and a large gear 28, the steering drive motor 24 is connected to the pinion 27 through the reduction box 25, and the pinion 27 is connected with the large gear 28. Meshing, the large gear 28 meshes with the steering drive cogging of the wheel carrier 3 .

Two sets of linear guide devices are arranged between the steering wheel 4 and the wheel frame 3, and the two sets of linear guide devices are evenly distributed around the rotation center of the steering wheel 4 and are located on the left and right sides of the synchronizing shaft 29; the linear guide devices include longitudinal The guide rod 5 and the longitudinal guide sleeve 6, the upper end of the longitudinal guide rod 5 is fixedly connected with the steering wheel 4, the lower end of the longitudinal guide rod 5 passes through the longitudinal guide sleeve 6, and the longitudinal guide sleeve 6 is arranged on the wheel frame 3 and is connected with the longitudinal guide The rod 5 is a vertical sliding fit.

There are more than two adjusting bolts 8 beside the linear guide device. The adjusting bolts 8 pass through the wheel frame 3 from bottom to top and are threadedly connected with the wheel frame 3. The upper ends of the adjusting bolts 8 are fixedly abutted or rotated with the steering wheel 4. ; The adjusting bolt 8 is also sleeved with a compression spring 7, and the compression spring 7 is crimped between the steering wheel 4 and the wheel frame 3. The distance between the wheel frame and the steering wheel can be changed by adjusting the bolt, so as to adjust the elastic strength of the elastic piece. The bottom of the bed frame 100 is rectangular and has four casters 11 ; the bed frame 100 is rectangular, and the four casters 11 are respectively arranged at four corners of the bottom of the bed frame 100 , and the power device 200 is located at the bottom of the bed frame 100 . The middle of the bottom of the bed frame. The power unit is located at the center of the bottom of the bed frame 100, so that the center of the carrying device is more centered, the center of gravity is lower, and the use is more stable. The bed frame is supported by four casters, and the power unit is located in the middle. When there is an angle difference between the contact positions of the front and rear end casters and the ground, the distance between the middle of the bed frame and the ground changes. At this time, the compression spring 7 makes the wheel frame have The downward movement trend ensures that the drive wheels have good contact with the ground.

The bed frame 100 is provided with a gantry frame 9 , the inner top surface of the gantry frame 9 is provided with a vertical shaft 13 , and the steering wheel 4 is connected with the vertical shaft 13 through a bearing 15 . The steering wheel 4 is provided with a central hole on which a fixing sleeve 14 is arranged. The bearing 15 includes an outer ring and an inner ring that rotate and cooperate with each other.

The walking drive mechanism also includes a motor seat 21 and a shaft seat 17, the motor seat 21 and the shaft seat 17 are arranged at the bottom of the wheel frame 3, the walking driving motor 2 is arranged on the motor seat 21, and the shaft seat 17 is rotated with a A rotating shaft 16, one end of the rotating shaft 16 is drivingly connected with the driving wheel 1, and the other end of the rotating shaft 16 is drivingly connected with the traveling drive motor 2 through the first pulley transmission pair. The first pulley transmission pair includes a first traveling drive gear 20, a first synchronous pulley 18 and a first synchronous belt 19, the first traveling drive gear 20 is arranged on the motor shaft of the traveling drive motor 2, and the first synchronous pulley 18 is arranged on the other end of the rotating shaft 16 , and the first timing belt 19 is wound around the first traveling drive gear 20 and the first timing pulley 18 .

The wheel frame 3 is in the shape of a plate, and the motor bases 21 are arranged on the left and right bisectors of the wheel frame 3 , and the two motor bases 21 are distributed front and rear.

The lifting device includes two sets of strut mechanisms and a lift drive mechanism 400. The two sets of strut mechanisms are respectively arranged at the front and rear ends of the bed frame 100. The strut mechanisms include diagonal struts 23 and lateral slides 41. The diagonal struts 23 The upper end is hinged with the upper bed frame 22, the lower end of the diagonal strut 23 is hinged with the lateral slide 41, and the lateral slide 41 is slid back and forth on the lower bed frame 10; 41 is a moving sliding seat transmission pair, the lift driving motor 36 is arranged on the lower bed frame 10 and is connected with the sliding seat transmission pair, and the lifting driving motor 36 is electrically connected with the main control circuit.

The sliding seat transmission pair includes a synchronizing shaft 29 and two sets of screw transmission pairs. The synchronizing shaft 29 is rotatably arranged on the lower bed frame 10 and points forward and backward. The synchronizing shaft 29 passes between the wheel frame 3 and the steering wheel 4, The screw drive pair includes a screw 40 and a nut 42 that are threadedly connected. The screw 40 is rotatably arranged on the lower bed frame 10 and points forward and backward. The nut 42 is connected with the lateral slide 41; the two ends of the synchronous shaft 29 are respectively connected with two sets of screws. The lead screw 40 of the transmission pair is in driving connection, and the synchronizing shaft 29 is also in driving connection with the elevating drive motor 36 .

The elevating drive motor 36 is located at one end of the synchronizing shaft 29. The elevating drive motor 36 is connected to the synchronizing shaft 29 through a drive pair of the prime mover pulley.

The drive pair of the drive pulley includes a drive belt 35, a first drive pulley 34 and a second drive pulley 30; the drive pair of the driven pulley is provided with two pairs, which are the first driven pulley drive pair and the second driven pulley. Drive pair of driven pulley, the first driven pulley drive pair includes a first driven belt 31, a first upper driven pulley 33 and a first lower driven pulley 32; the second driven pulley drive pair includes a second driven belt 44 , the second upper driven pulley 45 and the second lower driven pulley 43 . The first driven pulley drive pair and the second driven pulley drive pair are located at both ends of the synchronous shaft 29, respectively, the first drive pulley 34 is drivingly connected to the lift drive motor 36, the second drive pulley 30 and the first upper driven pulley 33 are coaxially arranged and jointly arranged at one end of the synchronizing shaft 29, the prime mover belt 35 is wound around the first prime mover pulley 34 and the second prime mover pulley 30; the first lower driven pulley 32 is arranged on the first upper The first driven belt 31 is wound around the first upper driven pulley 33 and the first lower driven pulley 32 on the lead screw 40 of a set of screw drive pairs below the driven pulley 33 . The second upper driven pulley 45 is arranged on the other end of the synchronizing shaft 29, the second lower driven pulley 43 is arranged on the lead screw 40 of another set of screw drive pairs below the second upper driven pulley 45, the second driven pulley 43 is The driven belt 44 is wound around the second upper driven pulley 45 and the second lower driven pulley 43 .

The lower bed frame 10 is provided with a front limit detection frame 37 and a rear limit detection frame 39 corresponding to the front and rear ends of the screw rod 40 . The front limit detection frame 37 and the rear limit detection frame 39 are respectively provided with a rising detection switch and a falling detection switch, which are not shown in the figures. When the nut 42 moves to the position of the raising detection switch and the lowering detection switch, the signals of the raising detection switch and the lowering detection switch change, so as to judge whether the upper bed frame 22 is raised and lowered in place.

Each set of strut mechanisms includes two diagonal struts 23, and the two diagonal struts 23 are distributed in parallel on the left and the right.

The lower bed frame 10 is provided with lateral guide rods 47 corresponding to the left and right ends of the lateral sliding seat 41 . The lateral guiding rod 47 points forward and backward.

The lateral guide rod 47 is disposed at the bottom of the lower bed frame 10 , and the lateral sliding seat 41 is disposed at the bottom of the sliding block 46 .

There is also a vertical guide telescopic rod between the upper bed frame 22 and the lower bed frame 10. The vertical guide telescopic rod includes a fixed rod 49 and a movable sleeve 48. Both the fixed rod 49 and the movable sleeve 48 are vertically arranged. The bed frame 10 is connected, the upper end of the fixed rod 49 is sleeved with the movable sleeve 48 and is vertically slidingly matched with each other, and the upper end of the fixed rod 49 is connected with the upper bed frame 22 .

The above-mentioned upper bed frame 22 and lower bed frame 10 are made of steel, and the total weight of the whole push bed is more than 250KG. They can be used together with the transfer bed. The bed rolls over.

Its working principle is: when the power device 200 is in the state of FIG. 1 : when the two driving wheels 1 are synchronized in the same direction, the bed frame can walk in a straight line; when the two driving wheels 1 run in the same direction with differential speed, the bed can be realized. The frame is turned to the outside of the drive wheel 1 that travels slowly. When one driving wheel 1 is locked and the other driving wheel 1 rotates, the bed frame 100 turns with the locked driving wheel 1 as the center of the circle. When the two driving wheels 1 run in a forward rotation and a reverse rotation, the bed frame 100 rotates with the center between the two driving wheels 1 as the axis.

When the power unit 200 is in the state shown in FIG. 10 : the main control circuit only allows two sets of traveling drive mechanisms to jog, and the two drive wheels 1 move synchronously to realize the lateral movement of the bed frame 100 , which is especially suitable when the bed frame needs to be parked on the side.

When the steering driving mechanism 300 controls the steering of the power unit 200 , the two sets of traveling driving mechanisms of the power unit 200 are in a stopped state, and the power unit 200 turns relative to the bed frame 100 (the bed frame 100 does not move relative to the ground).

When the lift drive mechanism 400 controls the front and rear lateral slides 41 to move backwards, the upper bed frame 22 rises; when the lift drive mechanism 400 controls the front and rear lateral slides 41 to move relative to each other, the upper bed frame 22 descends, as shown in FIG. 18 , is a schematic diagram of the structure after the upper bed frame 22 is lowered.

The difference between the second embodiment and the first embodiment is: as shown in FIG. 19 and FIG. 20 , the lifting device includes an upper leg tube 51, a lower leg tube 50, a screw and a screw sleeve, and the screw is rotated and arranged in the lower leg tube 50, and the screw The sleeve is arranged in the upper leg tube 51 and connected with the screw thread. The cross section of the upper leg tube 51 and the lower leg tube 50 is rectangular. The upper bed frame 22 is connected, the lower end of the lower leg tube 50 is connected with the lower bed frame 10, at least two sets of lifting devices are provided, front and rear, and the screw rod of each lifting device is linked with the lifting driving motor 36. In this embodiment, four sets of lifting devices are provided, and the four sets of lifting devices are distributed in a rectangular shape. The surface of the lifting device of this embodiment looks more compact.

Claims (10)

1. A multifunctional push bed, comprising a bed frame (100), a power device (200), a main control circuit and a battery, the bed frame (100) comprising an upper bed frame (22) and a lower bed frame (10), the upper bed frame ( 22) is connected with the lower bed frame (10) through a lifting device, the power device (200), the main control circuit and the battery are arranged on the lower bed frame (10), and the bottom of the lower bed frame (10) is provided with casters (11), It is characterized in that: the power device (200) includes two sets of travel drive mechanisms, the travel drive mechanism includes a drive wheel (1) and a travel drive motor (2), and the drive wheels (1) of the two sets of travel drive mechanisms are located on the bed frame (1). 100) The bottom is distributed with one left and one right, the driving wheel (1) is drivingly connected with the walking driving motor (2), and the walking driving motor (2) is electrically connected with the main control circuit; The upper bed frame (22) is provided with a handrail, the handrail is provided with a controller for sending control signals to the main control circuit, and the controller is electrically connected to the main control circuit; and/or, it also includes a controller for sending control signals to the main control circuit. The remote control is electrically connected with the main control circuit. 2 . The multifunctional push bed according to claim 1 , characterized in that: the power device ( 200 ) further comprises a wheel frame ( 3 ), and the two sets of walking driving mechanisms are arranged at the bottom of the wheel frame ( 3 ); the The wheel frame (3) is arranged on the bed frame (100) for horizontal rotation, and the bed frame (100) is provided with a steering driving mechanism (300) for controlling the rotation of the wheel frame (3), and the steering driving mechanism (300) includes a steering driving motor (24), the steering drive motor (24) is electrically connected with the main control circuit. 3. The multifunctional push bed according to claim 2, characterized in that: the walking driving mechanism further comprises a motor seat (21) and a shaft seat (17), and the motor seat (21) and the shaft seat (17) are arranged at the At the bottom of the wheel frame (3), the walking drive motor (2) is arranged on the motor base (21), and a rotating shaft (16) is rotated on the shaft base (17), and one end of the rotating shaft (16) is connected to the driving wheel (1) In the transmission connection, the other end of the rotating shaft (16) is in transmission connection with the traveling drive motor (2) through the first pulley transmission pair. 4. The multifunctional push bed according to claim 2, characterized in that: the steering driving mechanism (300) comprises a steering driving motor (24), a gear pair and a gear rack (26), and the gear rack (26) is arranged on the bed On the frame (100), the steering drive motor (24) is connected with the gear pair and arranged on the gear frame (26); the bed frame (100) is provided with a steering wheel (4) above the corresponding wheel frame (3), The outer periphery of the steering wheel (4) is provided with a steering drive cogging, which meshes with the gear pair. 5. The multifunctional push bed according to claim 4, characterized in that: the gear frame (26) is further provided with a reduction box (25), and the gear pair comprises a pinion (27) and a large gear (28) , the steering drive motor (24) is drivingly connected with the pinion (27) through the reduction box (25), the pinion (27) is meshed with the large gear (28), and the large gear (28) is connected with the wheel carrier (3) The steering drive cogging is engaged. 6 . The multifunctional push bed according to claim 4 , wherein the lifting device comprises two sets of strut mechanisms and a lift drive mechanism ( 400 ), and the two sets of strut mechanisms are respectively arranged at the front and rear of the bed frame ( 100 ). 7 . At both ends, the strut mechanism includes a diagonal strut (23) and a lateral slide (41), the upper end of the diagonal strut (23) is hinged with the upper bed frame (22), and the lower end of the diagonal strut (23) is connected to the lateral slide ( 41) Hinged, the lateral slide (41) is slid back and forth on the lower bed frame (10); the lift drive mechanism (400) includes a lift drive motor (36) and a slide drive pair for pushing the lateral slide (41) to move , the lift drive motor (36) is arranged on the lower bed frame (10), and is connected with the sliding seat transmission pair, and the lift drive motor (36) is electrically connected with the main control circuit; Alternatively, the lifting device includes an upper leg tube (51), a lower leg tube (50), a screw rod and a screw sleeve, the screw rod is rotatably arranged in the lower leg tube (50), and the screw sleeve is arranged in the upper leg tube (51) and is connected with the upper leg tube (51). The screw thread is connected, the upper leg tube (51) and the lower leg tube (50) are rectangular in cross section, the upper leg tube (51) and the lower leg tube (50) are sleeved and slid in a straight line, and the upper end of the upper leg tube (51) is connected to the upper bed The frame (22) is connected, and the lower end of the lower leg tube (50) is connected with the lower bed frame (10). 7. The multifunctional push bed according to claim 6, characterized in that: the sliding seat transmission pair comprises a synchronizing shaft (29) and two sets of screw transmission pairs, and the synchronizing shaft (29) is rotatably arranged on the lower bed frame (10) The synchronizing shaft (29) passes through between the wheel frame (3) and the steering wheel (4), and the lead screw transmission pair includes a threaded lead screw (40) and a nut (42). The lead screw (40) It is rotatably arranged on the lower bed frame (10) and points forward and backward, and the nut (42) is connected with the transverse slide seat (41); ) drive connection, the synchronizing shaft (29) is also drive connection with the lift drive motor (36). 8. The multifunctional push bed according to claim 1, wherein a vertical guide telescopic rod is further provided between the upper bed frame (22) and the lower bed frame (10), and the vertical guide telescopic rod comprises a fixed rod (49). ) and the movable sleeve (48), the fixed rod (49) and the movable sleeve (48) are vertically arranged, the lower end of the fixed rod (49) is connected with the lower bed frame (10), and the upper end of the fixed rod (49) is connected with the movable sleeve (48) The upper ends of the fixing rods (49) are connected with the upper bed frame (22) by being sleeved and slidably matched with each other. 9 . The multifunctional push bed according to claim 7 , wherein two sets of linear guide devices are arranged between the steering wheel ( 4 ) and the wheel frame ( 3 ), and the two sets of linear guide devices surround the steering wheel ( 4 ). 10 . ) rotation centers are evenly distributed and located on the left and right sides of the synchronizing shaft (29); the linear guide device includes a longitudinal guide rod (5) and a longitudinal guide sleeve (6), the upper end of the longitudinal guide rod (5) and the steering wheel ( 4) Fixed connection, the lower end of the longitudinal guide rod (5) passes through the longitudinal guide sleeve (6), the longitudinal guide sleeve (6) is arranged on the wheel frame (3), and vertically slides with the longitudinal guide rod (5). 10. The multifunctional push bed according to claim 9, characterized in that: there are more than two adjusting bolts (8) beside the linear guide device, and the adjusting bolts (8) pass through the wheel frame (3) from bottom to top , and is threadedly connected with the wheel frame (3), the upper end of the adjusting bolt (8) is fixedly abutted or rotatably matched with the steering wheel (4); the adjusting bolt (8) is also sleeved with a compression spring (7). (7) Crimp between the steering wheel (4) and the wheel frame (3).

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