CN108578155B - a multi-functional medical bed for emergency department - Google Patents

Abstract

The invention discloses a multifunctional medical bed for emergency department, which comprises a telescopic bracket, an adjustable bed board and a turnable auxiliary table; the telescopic support comprises a walking universal wheel and an adjustable lifting frame, a bearing cross beam is inserted into the top of the adjustable lifting frame, the adjustable bed plate comprises an outer fixed bed beam and an inner adjustable bed plate, and an electric push rod is connected between the outer fixed bed beam and the inner adjustable bed plate; the adjustable bed board at the inner side is provided with an adjustable platform and a sponge mattress, and the fixed bed beam at the outer side is provided with a turnover protective guard; the turnover auxiliary table comprises a turnover table which is used for being accommodated at the right side edge of the adjustable bed board, the upper surface of the turnover table is provided with a transfusion support and a disinfection storage tank, and the lower surface of the turnover table is provided with a power supply storage battery and a single chip microcomputer control board; the invention has the function of automatic lifting adjustment, can also realize the automatic angle adjustment operation of the bracket bed plate, ensures the stability of the patient in the conveying process, is convenient for moving the patient, has good damping performance of the whole emergency cot, and is also convenient for folding and storing.

Description

A multi-functional medical bed for emergency department

Technical Field

the invention relates to the field of medical equipment, in particular to a multifunctional medical bed for an emergency department.

Background

The height of the medical bed used in the hospital at present is often fixed unchangeable, therefore the patient when lying down the medical bed, need lift up patient's health back, can only make patient's health raise through the bolster when thigh portion or shank, however, the fixed effect of bolster is poor, reuse for a long time can not be enough, the health problem can not be guaranteed, cause the wound infection easily, and when carrying out operation or inspection to the patient, because the patient posture changes makes the bolster drop easily, make doctor-patient's cooperation inseparable enough, influence patient's recovery.

Chinese patent CN202776819U discloses a lifting medical bed, which comprises a bed body and a bed surface, wherein the bed body is connected with the bed surface, a surrounding frame with the same size as the bed surface is arranged on the bed surface, a canvas cover is fastened on the surrounding frame, vertical downward upright posts are arranged at four corners of the surrounding frame, and a lifting mechanism is arranged between the upright posts and the bed. However, firstly, although the bed can be lifted, the bed head cannot be lifted, the upper half of the patient cannot be inclined, the patient is inconvenient to take medicine, and the like, and the use is inconvenient; secondly, the medical bed cannot be moved, is inconvenient to move and is inconvenient to move to a required position; finally, it is not disclosed whether the lifting device can fix the bed surface after lifting the bed surface to a proper height, and only has lifting function, single function and poor stability in use.

Still like chinese patent CN202397731U discloses a nursing bed for general surgery department, which comprises a bed board, bed legs, a supporting board, a storage cabinet, a lying pillow, a supporting rod, an instrument supporting board and a handrail, wherein the bed board is connected with the bed legs, the supporting board is connected with the bed board, the storage cabinet is arranged on the supporting board, the supporting rod is connected with the bed board, the instrument supporting board is connected with the supporting rod through a shaft, the lying pillow and the handrail are arranged on the bed board, when nursing a patient in general surgery department, the nursing bed is easy and convenient to get up and down, time and labor are saved, and the work difficulty of. However, the height and the cleaning angle of the bed plate cannot be adjusted, the bed plate cannot be suitable for patients with different heights, the safety is poor, the operation is complex, and when a patient in general surgery lies on the bed and needs to eat, the bed plate cannot be inclined, so that the patient can eat food, the use is inconvenient, and the use requirement of the patient in general surgery cannot be met.

therefore, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a multifunctional medical bed for an emergency department, which can effectively solve the problems in the background art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

A multifunctional medical bed for emergency department comprises a telescopic bracket for supporting the bed, wherein the top of the telescopic bracket is connected with an adjustable bed board in a supporting way, and the side edge of the adjustable bed board is provided with a turnable auxiliary table for assisting first aid;

The telescopic support is characterized in that the number of the telescopic supports is two, the telescopic supports are respectively connected to two sides of the adjustable bed board, the bottommost part of each telescopic support is connected with a walking universal wheel used for driving the whole device to move, the wheel shaft of each walking universal wheel is connected with an adjustable lifting frame through a coupler, cross inclined pull beams are connected between the adjustable lifting frames through hinge shafts, bearing cross beams are inserted into the tops of the adjustable lifting frames, and the bearing cross beams are connected to the bottom of the adjustable bed board.

The adjustable bed board comprises an outer side fixed bed beam arranged at the outermost periphery and an inner side adjustable bed board arranged and fixed in the middle, and an electric push rod for adjusting the relative angle between the inner side adjustable bed board and the outer side fixed bed beam is connected between the inner side adjustable bed board and the outer side fixed bed beam; adjustable platforms with shock-absorbing function are all installed to the head and the tail of inboard adjustable bed board, the upper surface parcel of adjustable platform has the sponge mattress, the upper surface vertical installation of the fixed bed roof beam in outside has the rail guard that can overturn that has protect function.

supplementary platform can overturn including being used for accomodating the upset platform at adjustable bed board right side limit and being used for connecting the upset hinge pin of upset platform and adjustable bed board, install the infusion support that has the lift adjustment function perpendicularly on the inboard that the upper surface of upset platform is close to the bed board, the outside limit of upset platform is opened and is chiseled the disinfection holding tank that is used for placing medical instrument, the lower surface mounting of upset platform has the power supply battery, the output of power supply battery is connected with the power supply picture peg through the wire, the back side at the upset platform is inlayed to the power supply picture peg, the power output end of power supply battery still is connected with the single chip microcomputer control board that is used for carrying out automatic adjustment.

Furthermore, the adjustable lifting frame comprises a bearing base made of a hollow stainless steel plate, a rotary driving motor is arranged on the upper surface of the bearing base, a connecting flange is sleeved on an output shaft of the rotary driving motor, and a rotary sleeve shaft used for rotary lifting is sleeved at the top of the other end of the connecting flange.

Further, the rotating sleeve shaft comprises outer sleeves at the upper end and the lower end and an inner sleeve connected between the outer sleeves, a matched rotating thread is arranged at the joint of the outer sleeves and the inner sleeve, the outer sleeve at the top is connected to the lower surface of the bearing cross beam, a movable hinge is arranged at the joint, and a fixing bolt is further connected between the movable hinge and the bearing cross beam.

Furthermore, the outer fixed bed beam is a stainless steel hollow square steel pipe, a movable sliding rail used for being clamped with the electric push rod is arranged on the inner surface of the outer fixed bed beam in a chiseled mode, the electric push rod comprises a push-pull driving motor used for providing a power source, and a spring push rod with compression performance is connected to an output shaft of the driving motor.

Further, inboard adjustable bed board includes two stainless steel bed board framves that separate, the seam crossing of stainless steel bed board frame is connected with rotatory cross axle, the side of stainless steel bed board frame is inlayed and is had the motor mounting groove, the motor mounting groove is used for fixed mounting driving motor, still is connected with the expanding spring who has good tensile properties between the lower surface of two stainless steel bed board frames.

Further, adjustable platform is including the lift driving motor who is used for realizing height adjustment, lift driving motor's lift output shaft top is connected with the balance support board, the balance support board comprises upper and lower two-layer corrosion resistant plate, still installs damping spring between the upper and lower sheet layer.

further, the singlechip control board comprises a singlechip controller, an SPI bus port of the singlechip controller is connected with a signal processing module for signal acquisition, and a GPIO signal output end of the singlechip controller is connected with an action execution module for driving each motor.

Furthermore, the signal processing module comprises an angle sensor arranged on the inner side adjustable bed board and a rotating speed sensor arranged on the output shafts of the push-pull driving motor and the lifting driving motor, the output ends of the angle sensor and the rotating speed sensor are connected with a digital signal acquisition card for signal acquisition, and the digital signal acquisition card outputs digital signals to the SPI input end of the single chip microcomputer control board.

Furthermore, the action execution module comprises a synchronous reset switch for controlling the on-off of the circuit and a power regulator for adjusting the working state of the motor, the power regulator is connected to the PWM wave output module of the singlechip control board, the synchronous reset switch is connected to the driving ends of the push-pull driving motor and the lifting driving motor, and a power amplifier is connected between the power regulator and the synchronous reset switch.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the invention, the telescopic support is arranged, the turnable adjustable lifting frame is arranged below the bearing cross beam, the rotary driving motor is used as a power source, and the generated power drives the outer sleeve and the inner sleeve of the rotary sleeve shaft to relatively rotate, so that the automatic adjustment of the whole height is realized, the height of the whole bed can be automatically adjusted, the height of the bed can be conveniently adjusted to the same height of a sickbed or an operating table in an emergency room, the patient can be moved in a state of keeping the body position of the patient unchanged, the secondary damage to the patient in the moving process is conveniently reduced, the moving operation difficulty is effectively reduced, and the labor force of medical staff is saved;

(2) According to the invention, the adjustable bed boards are arranged, the electric push rod is arranged between the inner adjustable bed board and the outer fixed bed beam, the push-pull driving motor is used as a driving source to drive the spring push rod to move back and forth in the movable slide rail, so that the included angle between the two inner adjustable bed boards and the rotary transverse shaft is adjusted, the automatic leveling and folding operation of the inner adjustable bed boards is automatically realized, and the operation is rapid and convenient; the turnover guard rails are arranged on the side edges of the bed board, so that the patient is effectively prevented from turning over when being moved, and can be turned over for storage when not in use, and the occupied space is effectively saved;

(3) According to the invention, the adjustable platform is arranged on the stainless steel bed plate frame, the lifting driving motor is used as a driving source, and the size of an included angle between the balance supporting plate and the horizontal direction is changed, so that the angle of the bed can be automatically adjusted in a non-horizontal environment, the lying position of a seriously injured patient is ensured, and the effectiveness of timely rescue is ensured; the vibration in the height adjusting process can be effectively buffered by arranging the damping spring, so that the influence on a patient is reduced to the minimum, and the patient is effectively protected;

(4) According to the invention, the singlechip control board is arranged on the turnable auxiliary table, the power supply storage battery is used as a power supply, the angle sensor and the rotating speed sensor in the signal processing module are used for carrying out real-time acquisition operation, the singlechip controller is combined for carrying out analysis and judgment, a control instruction is output to the action execution module, the adjustment of the output power is realized by changing the duty ratio of the power regulator, the rotating speed of the motor is further changed, the adjustment of the current inclination angle is realized, a closed-loop feedback regulation system is formed, the anti-interference capability is strong, and the control precision is high.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic structural view of an adjustable platform;

FIG. 5 is a schematic view of a reversible auxiliary table;

fig. 6 is a schematic diagram of the single chip microcomputer control board.

reference numbers in the figures:

1-a telescopic support; 2-adjustable bed board; 3-a reversible auxiliary table;

101-a walking universal wheel; 102-an adjustable lifting frame; 103-cross diagonal tension beams; 104-a load-bearing beam; 105-a load-bearing base; 106-a rotary drive motor; 107-connecting flange; 108-rotating sleeve shaft; 109-an outer sleeve; 110-an inner sleeve; 111-a living hinge; 112-fixing the bolt;

201-fixing the bed beam at the outer side; 202-adjustable bed board at the inner side; 203-electric push rod; 204-an adjustable platform; 205-sponge mattress; 206-reversible guard rails; 207-movable slide rail; 208-push-pull driving motor; 209-spring push rod; 210-stainless steel bed plate frame; 211-rotating the horizontal axis; 212-motor mounting slot; 213-a telescoping spring; 214-a lift drive motor; 215-balance support plate; 216-a damping spring;

301-a flipping table; 302-turning the hinge axis; 303-a transfusion stand; 304-a sterile storage tank; 305-a power supply accumulator; 306-a power supply plug board; 307-singlechip control panel; 308-a single chip controller; 309-a signal processing module; 310-action execution module; 311-angle sensor; 312-rotational speed sensor; 313-a digital signal acquisition card; 314-synchronous reset switch; 315-power regulator; 316-power amplifier.

Detailed Description

as shown in fig. 1, the invention provides a multifunctional medical bed for emergency department, comprising a telescopic bracket 1 for supporting the bed, an adjustable bed board 2 is connected to the top support of the telescopic bracket 1, and a reversible auxiliary table 3 for emergency assistance is installed at the side of the adjustable bed board 2; the telescopic bracket 1 is used for supporting the adjustable bed board 2 and can automatically adjust the height of the bed board, and the turnable auxiliary table 3 can assist first aid.

But telescopic bracket 1 is total four, and two a set of both sides of connecting respectively at adjustable bed board 2, telescopic bracket 1 bottommost is connected with the walking universal wheel 101 that is used for driving whole device removal, walking universal wheel 101 can conveniently drive whole emergency cot and remove, is convenient for transport the patient, saves first-aid staff's physical power for rescue speed.

As shown in fig. 1 and 3, the wheel axle of the walking universal wheel 101 is connected with adjustable lifting frames 102 through a coupling, cross inclined tension beams 103 are connected between the adjustable lifting frames 102 through hinge shafts, a bearing cross beam 104 is inserted into the top of the adjustable lifting frame 102, and the bearing cross beam 104 is connected to the bottom of the adjustable bed plate 2; the crossed oblique tension beams 103, the bearing cross beams 104 and the adjustable lifting frames 102 form a stable triangular frame structure, so that the stability and the bearing capacity of the emergency cot are improved.

preferably, the adjustable lifting frame 102 comprises a bearing base 105 made of a hollow stainless steel plate, a rotary driving motor 106 is arranged on the upper surface of the bearing base 105, a connecting flange 107 is sleeved on an output shaft of the rotary driving motor 106, and a rotary sleeve shaft 108 for rotary lifting is sleeved at the top of the other end of the connecting flange 107; the rotating sleeve shaft 108 comprises an outer sleeve 109 and an inner sleeve 110, wherein the outer sleeve 109 and the inner sleeve 110 are connected between the outer sleeve 109 and the inner sleeve 109, matched rotating threads are arranged at the joint of the outer sleeve 109 and the inner sleeve 110, and the outer sleeve 109 at the top is connected to the lower surface of the bearing cross beam 104.

It is further supplementary to explain, the activity hinge 111 is installed with the junction of bearing crossbeam 104 to outer sleeve 109, still be connected with fixed bolt 112 between activity hinge 111 and the bearing crossbeam 104, when the activity hinge 111 is not fixed, the outer sleeve 109 of bottom can rotate round the axle center, and then can conveniently put down whole adjustable crane 102 and substructure or fold to the lower surface of adjustable bed board 2, realizes accomodating the operation, when needs put down the use, pegs graft the locating hole on bearing crossbeam 104 with fixed bolt 112 in, just can realize adjustable crane 102 and adjustable bed board 104 relatively fixed, guarantees emergency cot's stability.

When the adjustable lifting frame 102 is put down, the overall height can be adjusted according to actual conditions, for example, when a certain severe patient cannot move greatly, the emergency treatment bed is directly moved beside the operation bed, the rotary driving motor 106 is adjusted, the output shaft of the rotary driving motor 106 rotates, the rotary sleeve shaft 108 is synchronously driven to rotate through the connecting flange 107, when the rotary driving motor 106 rotates anticlockwise, the output shaft of the rotary driving motor 106 drives the outer sleeve 109 of the rotary sleeve shaft 108 to rotate anticlockwise, the inner sleeve 110 rotates reversely relative to the outer sleeve 109 at the moment and is screwed out of the outer sleeve 109, the overall height is further improved, the emergency treatment bed is directly adjusted to be parallel to the operation bed, the moving amplitude of the patient is reduced, and the damage to the patient is reduced to the maximum extent.

As shown in fig. 1 and 2, the adjustable bed plate 2 includes an outer fixed bed beam 201 installed at the outermost periphery and an inner adjustable bed plate 202 installed and fixed in the middle, and an electric push rod 203 for adjusting the relative angle between the inner adjustable bed plate 202 and the outer fixed bed beam 201 is connected between the two bed plates; the outer fixed bed beam 201 is a stainless steel hollow square steel tube, a movable sliding rail 207 used for being clamped with the electric push rod 203 is arranged on the inner surface of the outer fixed bed beam 201 in a chiseled mode, the electric push rod 203 comprises a push-pull driving motor 208 used for providing a power source, and a spring push rod 209 with compression performance is connected to an output shaft of the push-pull driving motor 208.

It is further explained that the inner adjustable bed plate 202 comprises two discrete stainless steel bed plate frames 210, a rotary cross shaft 211 is connected to the joint of the stainless steel bed plate frames 210, a motor mounting groove 212 is inlaid in the side edge of the stainless steel bed plate frame 210, the motor mounting groove 212 is used for fixedly mounting the push-pull driving motor 208, and a telescopic spring 213 with good tensile property is further connected between the lower surfaces of the two stainless steel bed plate frames 210.

generally, when the bed is not used, the entire adjustable bed plate 2 is in a folded state, the extension spring 213 connected to the lower surface of the stainless steel bed plate frame 210 is also in a relaxed state, and when the bed is needed, the electric push rod 203 starts to work: firstly, a push-pull driving motor 208 is started, the output shaft of the motor pushes outwards to drive a spring push rod 209 to move outwards, the spring push rod 209 moves outwards along a movable sliding rail 207, and then the stainless steel bed board frame 210 is pulled open towards two ends until the stainless steel bed board frame is flattened; when the bed needs to be stored, the spring push rod 209 is retracted towards the center of the inner side by pushing and pulling the driving motor 208, so that the stainless steel bed plate frame 210 is retracted inwards around the rotating transverse shaft 211, and the bed is automatically folded.

As shown in fig. 2, 3 and 4, the adjustable platforms 204 with a shock-absorbing function are mounted at the head and the tail of the inner adjustable bed board 202, the upper surface of the adjustable platform 204 is wrapped by a sponge mattress 205, a patient can be prevented from generating secondary collision damage by arranging the sponge mattress 205, the upper surface of the outer fixed bed beam 201 is vertically provided with a reversible guard rail 206 with a protection function, the reversible guard rail 206 can rotate around the outer fixed bed beam 201, the reversible guard rail 206 can be turned up when needed to effectively prevent the patient from falling down in the conveying process, and the patient can be supported and supported by the adjustable bed board without being turned down, so that the adjustable bed board is convenient to store and saves storage space.

Because different patients have different conditions and different requirements on the lying posture of each patient, excessive inclination in the process of carrying at the early stage of rescue not only can increase the pain of the sick and wounded, but also can cause the deterioration of the state of illness of the sick and wounded, and can easily cause secondary injury to the sick and wounded, so that the rescue efficiency is greatly reduced, and particularly, the life safety of the sick and wounded with fracture, internal injury and internal bleeding can be even threatened. Therefore, it is important to maintain a correct posture when rescuing a critically ill patient. For patients with fractures, a relaxed position should be maintained to relieve compression of the bone; for patients with sudden cardiac arrest, the patient should lie on a hard wood bed to avoid the distortion of the head, neck and trunk; in addition, the inclination of the emergency cot during intravenous injection may cause air leakage in the intravenous tube, which brings life risk to the sick and wounded, so that the sponge mattress 205 needs to be automatically adjusted in inclination angle by the adjustable platform 204 according to actual conditions.

In this embodiment, the adjustable platform 204 includes a lifting driving motor 214 for realizing height adjustment, a balance support plate 215 is connected to the top of a lifting output shaft of the lifting driving motor 214, the balance support plate 215 is composed of an upper stainless steel plate and a lower stainless steel plate, and a damping spring 216 is further installed between the upper and lower plate layers.

as shown in fig. 2 and 5, the auxiliary table 3 comprises a turnover table 301 for being received at the right side of the adjustable bed board 2, the turnover table 301 is connected with the adjustable bed board 2 through a turnover hinge shaft 302, an infusion support 303 with a lifting adjusting function is vertically installed on the upper surface of the turnover table 301 close to the inner side of the bed board, and a disinfection storage slot 304 for placing medical instruments is drilled at the outer side of the turnover table 301; the overturning platform 301 is connected with the emergency cot main body in an overturning manner through an overturning hinge shaft 302, so that the overturning platform 301 can be conveniently overturned up and down, the storage operation can be conveniently carried out, the occupied space is effectively saved, and the storage is convenient; the infusion stand 303 can be used to hang an infusion bottle for infusion, and the sterilization storage tank 304 is used to store medical instruments and can be easily sterilized, so that the emergency cot can be used as a simple operating table.

Further, a power supply storage battery 305 is mounted on the lower surface of the turnover table 301, an output end of the power supply storage battery 305 is connected with a power supply plugboard 306 through a wire, the power supply plugboard 306 is embedded in the rear side edge of the turnover table 301, and a power supply output end of the power supply storage battery 305 is further connected with a single chip microcomputer control board 307 for automatically adjusting the adjustable bed board 2; the power supply plugboard 306 is used for supplying power to all motors and supplying power to the single chip microcomputer control board 307, and the power supply plugboard 306 is used for supplying power to other electrical appliances, so that emergency medical devices can be conveniently used.

When the angle needs to be adjusted, the head and tail lifting driving motors 214 are respectively started, and when the head and tail lifting driving motors 214 do not synchronously move, an upper and lower inclination angle is generated, so that the inclination angle of the top balance supporting plate 215 is changed to meet different inclination angle requirements; when absolute balance of the device is ensured, synchronous action of the head-tail lifting driving motors 214 is realized, starting and stopping of the lifting driving motors 214 at different positions are controlled by an electronic driving circuit in the single chip microcomputer control board 307, closed-loop feedback automatic regulation and control are realized, accurate regulation can be realized, and complete synchronization is ensured; because the lifting driving motor 214 can generate larger vibration when moving up and down, the damping spring 216 is additionally arranged to reduce the vibration so as to ensure the stability of the emergency cot and reduce the damage to the wounded.

As shown in fig. 6, the single chip microcomputer control board 307 includes a single chip microcomputer controller 308, an SPI bus port of the single chip microcomputer controller 308 is connected to a signal processing module 309 for signal acquisition, and a GPIO signal output end of the single chip microcomputer controller 308 is connected to an action execution module 310 for driving each motor; the single-chip microcomputer controller 308 is used for acquiring and analyzing signals, and performing real-time acquisition operation on the current state of the emergency cot through the signal processing module 309.

It should be added that the controller adopts an ARM chip with a core of Cortex-M3 and a model of LM3S308, and Cortex-M3 has the advantages of low power consumption, low cost and high performance; the ARM receives sensor signals through a serial port, and each frame of data adopts a transmission format of 1-bit start bit, 8-bit data bit and 1-bit end bit; on one hand, the human body is insensitive to the small-angle inclination angle, on the other hand, in order to reduce disturbance at the balance point and avoid frequent repeated starting of the electric push rod at the balance point, although the angle measurement precision of the sensor is 0.1 degrees, the threshold value at the balance point is set to be +/-1 degrees in the program algorithm, when the included angle between the emergency treatment bed and the horizontal plane is larger than +/-1 degree, the controller sends an instruction to the driver to control the electric push rod to act, and otherwise, the electric push rod keeps the original state.

The signal processing module 309 comprises an angle sensor 311 installed on the inner adjustable bed plate 202 and a rotation speed sensor 312 installed on the output shafts of the push-pull driving motor 208 and the lifting driving motor 214, the output ends of the angle sensor 311 and the rotation speed sensor 312 are connected with a digital signal acquisition card 313 for signal acquisition, the digital signal acquisition card 313 outputs digital signals to the SPI input end of the singlechip control board 307, the angle sensor 311 is used for acquiring the current angle value between the lifting driving motor 214 and the balance support plate 215 in real time, meanwhile, the current rotation speed of each motor is acquired through the rotation speed sensor 312, the acquired value is subjected to signal acquisition through the digital signal acquisition card 307 and is converted into digital signals to be sent to the singlechip control board 307, and the singlechip control board 307 compares the current inclination angle value with an actual set value, if the setting value is not satisfied, the motion execution module 310 is started to perform motor adjustment.

the action execution module 310 includes a synchronous reset switch 314 for controlling the on/off of the circuit and a power regulator 315 for making motor operating state adjustments, the power regulator 315 is connected to a PWM wave output module of the one-chip microcomputer control board 307, the synchronous reset switch 314 is connected to the driving ends of the push-pull driving motor 208 and the lifting driving motor 214, and a power amplifier 316 is connected between the power regulator 315 and the synchronous reset switch 314, the power regulator 315 is driven by the PWM signal output from the single chip microcomputer control board 307, by adjusting the duty ratio of the PWM wave signal to adjust the magnitude of the output current of the power regulator 315, the synchronous reset switch 314 can conveniently adjust the switching states of different motors to form a closed-loop feedback adjustment mechanism.

For example, when the four-corner lifting driving motors 214 need to synchronously operate, the synchronous reset switch 314 outputs a reset signal to control each lifting driving motor 214 to be restored to the original position of the lowest limit, then the four lifting driving motors 214 are simultaneously started, and the rotation speeds are controlled to be completely the same through the power regulator 315, so that the synchronous operation and the synchronous start and stop are realized, the complete synchronization is realized, and the balance performance of the top mechanism is ensured.

It should be added that the closed-loop feedback control principle is adopted, and based on the principle of 'detecting deviation and correcting deviation', the control system is designed into a closed-loop feedback control system.

Claims (3)

1. A multi-functional medical bed for emergency department which characterized in that: the emergency treatment bed comprises a telescopic bracket (1) for supporting a bed, wherein the top of the telescopic bracket (1) is connected with an adjustable bed board (2) in a supporting way, and a turnable auxiliary table (3) for assisting emergency treatment is arranged on the side edge of the adjustable bed board (2);

The telescopic support is characterized in that the number of the telescopic supports (1) is two, the telescopic supports are respectively connected to two sides of the adjustable bed plate (2), the bottommost part of each telescopic support (1) is connected with a walking universal wheel (101) for driving the whole device to move, the wheel shaft of each walking universal wheel (101) is connected with an adjustable lifting frame (102) through a coupling, cross inclined pull beams (103) are connected between the adjustable lifting frames (102) through hinge shafts, the top of each adjustable lifting frame (102) is connected with a bearing cross beam (104) in an inserted mode, and the bearing cross beam (104) is connected to the bottom of the adjustable bed plate (;

The adjustable bed board (2) comprises an outer side fixed bed beam (201) arranged at the outermost periphery and an inner side adjustable bed board (202) arranged and fixed in the middle, and an electric push rod (203) used for adjusting the relative angle between the inner side adjustable bed board (202) and the outer side fixed bed beam (201) is connected between the inner side adjustable bed board (202) and the outer side fixed bed beam; adjustable platforms (204) with a shock absorption function are mounted at the head and the tail of the inner adjustable bed board (202), a sponge mattress (205) is wrapped on the upper surface of each adjustable platform (204), and a reversible protective guard (206) with a protection function is vertically mounted on the upper surface of the outer fixed bed beam (201);

The auxiliary table (3) that can overturn is including being used for accomodating upset platform (301) at adjustable bed board (2) right side limit, be connected with upset hinge pin (302) between upset platform (301) and adjustable bed board (2), install infusion support (303) that have lift adjustment function on the upper surface of upset platform (301) is close to the inboard of bed board perpendicularly, the outside limit of upset platform (301) is opened and is dug and is had disinfection holding tank (304) that are used for placing medical instrument, the lower surface mounting of upset platform (301) has power supply battery (305), the output of power supply battery (305) is connected with power supply picture peg (306) through the wire, power supply picture peg (306) are inlayed at the back side of upset platform (301), the power output end of power supply battery (305) still is connected with and is used for carrying out automatic adjustment's single chip microcomputer control board (307) to adjustable bed, the inner surface of the outer fixed bed beam (201) is provided with a movable sliding rail (207) which is used for being clamped with the electric push rod (203), the electric push rod (203) comprises a push-pull driving motor (208) which is used for providing a power source, an output shaft of the push-pull driving motor (208) is connected with a spring push rod (209) with compression performance, the inner adjustable bed plate (202) comprises two discrete stainless steel bed plate frames (210), a seam of each stainless steel bed plate frame (210) is connected with a rotating cross shaft (211), a telescopic spring (213) is connected between the lower surfaces of the two stainless steel bed plate frames (210), the adjustable platform (204) comprises a lifting driving motor (214) which is used for realizing height adjustment, the top of a lifting output shaft of the lifting driving motor (214) is connected with a balance supporting plate (215), the balance supporting plate (215) is an upper layer and a lower layer, singlechip control board (307) includes singlechip controller (308), the SPI bus port of singlechip controller (308) is connected with signal processing module (309) that is used for carrying out signal acquisition, the GPIO signal output part of singlechip controller (308) is connected with action execution module (310) that is used for driving each motor, signal processing module (309) is including installing angle sensor (311) on inboard adjustable bed board (202) and installing in push-and-pull driving motor (208), rotational speed sensor (312) on lift driving motor (214) output shaft, the output of angle sensor (311) and rotational speed sensor (312) is connected with digital signal acquisition card (313) that is used for carrying out signal acquisition, digital signal acquisition card (313) output digital signal is to the SPI input of singlechip control board (307), action execution module (310) is including synchronous reset switch (314) that are used for control circuit break-make-break and power regulation that is used for carrying out motor operating condition adjustment The power regulator (315) is connected to a PWM wave output module of the single chip microcomputer control board (307), the synchronous reset switch (314) is connected to the driving ends of the push-pull driving motor (208) and the lifting driving motor (214), and a power amplifier (316) is connected between the power regulator (315) and the synchronous reset switch (314).

2. the multifunctional medical bed for emergency department according to claim 1, wherein: the adjustable lifting frame (102) comprises a bearing base (105) made of a hollow stainless steel plate, a rotary driving motor (106) is arranged on the upper surface of the bearing base (105), a connecting flange (107) is sleeved on an output shaft of the rotary driving motor (106), and a rotary sleeve shaft (108) used for rotary lifting is sleeved at the top of the other end of the connecting flange (107).

3. The multifunctional medical bed for emergency department according to claim 2, wherein: rotatory sleeve shaft (108) include outer sleeve (109) at upper and lower both ends and connect inner skleeve (110) between outer sleeve (109), outer sleeve (109) and inner skleeve (110) junction are provided with supporting rotatory screw thread, and the lower surface at bearing crossbeam (104) is connected in outer sleeve (109) at top, and the junction installs activity hinge (111), still be connected with fixing bolt (112) between activity hinge (111) and bearing crossbeam (104).