CN106963565A - A kind of intelligent stretcher - Google Patents

Abstract

The invention discloses an intelligent stretcher vehicle, which comprises a vehicle frame, a bed mechanism installed on the vehicle frame, a lifting mechanism, a locking mechanism, an obstacle detection system, a driving device and a control device, and the bed mechanism is detachably installed on the vehicle frame above, and the bed mechanism includes a first bed board and a second bed board hinged to the first bed board, the first bed board and the second bed board are arranged on the upper surface of the vehicle frame, and the first bed board is fixedly installed on the vehicle frame ; the power output end of the lifting mechanism is connected with the second bed board to drive the second bed board to swing; The locking mechanism locks the first bed board and the second bed board together; the obstacle detection system is fixedly installed on the front end of the vehicle frame, and the obstacle detection system and the driving device are electrically connected with the control device. The invention has the beneficial effects of high intelligence, convenient use, safety and reliability.

Description

An intelligent stretcher

technical field

The invention relates to a stretcher vehicle, in particular to an intelligent stretcher vehicle.

Background technique

In the field of medical equipment, due to China's large population, most of the existing medical equipment resources are relatively scarce. Among them, medical beds are widely and frequently used by hospitals as common medical appliances. However, at present, medical beds all need to be manually pushed and adjusted, the operation is complicated, and the intelligence is low, which brings great inconvenience to users and cannot meet the needs of users.

Contents of the invention

The purpose of the present invention is to solve the problem that the medical bed is pushed and adjusted manually, the operation is complicated, and the intelligence is low, which brings great inconvenience to the user, and to provide an intelligent stretcher with high intelligence, convenient use, safety and reliability car.

The purpose of the present invention can adopt following technical scheme to reach:

An intelligent stretcher vehicle, comprising a vehicle frame and a bed mechanism installed on the vehicle frame, a lifting mechanism, a locking mechanism, an obstacle detection system, a driving device and a control device, the bed mechanism is detachably mounted on the vehicle frame, And the bed mechanism includes a first bed board and a second bed board hinged with the first bed board, the first bed board and the second bed board are arranged on the upper surface of the vehicle frame, and the first bed board is fixedly installed on the vehicle frame The power output end of the lifting mechanism is connected to the second bed board to drive the second bed board to swing; the locking mechanism is arranged on the bed mechanism, and the upper surfaces of the first bed board and the second bed board are in the same processing When it is on the horizontal plane, the locking mechanism locks the first bed board and the second bed board together; the obstacle detection system is fixedly installed on the front end of the vehicle frame, and the obstacle detection system and the driving device are electrically connected to the control device. connect.

Further, the drive device includes a first motor and a second motor, and the bottom of the frame is provided with a front wheel and a rear wheel; the first motor and the second motor are electrically connected to the control device; the front wheel It is a universal wheel, and the first motor and the second motor are respectively installed on the two rear wheels to drive the rear wheels to rotate.

Further, the frame is provided with a handle sensing control device, the handle sensing control device includes a handle, a first sensor, a second sensor and a connecting piece, the front end of the handle is fixedly connected to the frame through the first sensor, The second sensor and the connecting piece are set as two, the two ends of the handle are connected to one end of the connecting piece through the second sensor, a slot is opened on the vehicle frame, and the other end of the connecting piece can be slidably inserted. installed in the slot; the first sensor and the second sensor are electrically connected with the control device.

Further, a first groove and a second groove are formed on the sides of the first bed board and the second bed board respectively; the locking mechanism includes a first slider and a U-shaped bolt, and the first slider can Slidingly installed in the first groove and the second groove; the length of the first slider is smaller than the first groove and greater than the length of the second groove; when the first slider slides into the second groove, The two ends of the U-shaped bolt are respectively inserted into the first slide block and the second bed board to lock the first bed board and the second bed board together.

Further, a first slot and a second slot are opened on the first slider, and a third slot and a fourth slot are respectively opened on the first bed board and the second bed board; When the block slides into the second groove, the two ends of the U-shaped bolt are respectively inserted into the second slot hole and the fourth slot hole to lock the first bed board and the second bed board together; when the first slider slides to the first When in the groove, the two ends of the U-shaped bolt are respectively inserted into the first slot and the third slot to lock the first slider to the first bed board.

Further, a fifth slot is opened on the first slider between the first slot and the second slot, and the U-shaped pin is provided on both the first slot and the second slot; When the first slider slides into the second groove, the two ends of the U-shaped bolt on the second slot are respectively inserted into the second slot and the fourth slot to lock the first bed board and the second bed board together ; When the first slider slides into the first groove, the two ends of the U-shaped pin on the second slot are inserted into the second slot and the second slot respectively, and the U-shaped pin on the first slot The two ends are respectively inserted into the first slot and the third slot to lock the first slider to the first bed board.

Further, the lifting mechanism includes a motor, a connecting sleeve, a slide rod, a second slider and a screw rod, the motor is fixedly mounted on the frame, and two slide rods are fixedly mounted on the frame. on the frame; the second slider is slidably sleeved on the two sliders, one end of the screw rod is fixedly connected with the second slider, and the second slider presses the The bottom surface of the second bed board; the connecting sleeve is provided with an internal thread, the output end of the motor is fixedly connected with one end of the connecting sleeve, and the other rod of the screw rod is threadedly connected with the other end of the connecting sleeve.

Further, a pulley is rotatably mounted on the upper end of the second slider, and the pulley presses against the bottom surface of the second bed board.

Further, a first through hole and a second through hole are opened on the first bed plate, an insertion hole is opened on the vehicle frame, a "J" type pin is slidably installed on the first through hole, and the The longer end of the "J"-shaped pin is inserted into the first through hole, and the shorter end of the "J"-shaped pin is inserted into the second through-hole and the jack in turn to fix the first bed board on the frame superior.

Further, a limit block is provided on the longer end of the "J"-shaped plug, and the limit block prevents the longer end of the "J"-shaped plug from slipping out of the first through hole.

Implement the present invention, have following beneficial effect:

1. The present invention can detect obstacles on the road through the obstacle detection system, and then send the detected obstacle shape and position information to the control device, and then the control device drives the drive device to make the frame 1 turn and avoid the road Obstacles, automatic detection and control of the whole movement, without manual operation and control, high degree of intelligence, simple and convenient to use.

2. The lifting mechanism of the present invention is electrically connected with the control device. When it is necessary to adjust the height and angle of the second bed board, it only needs to control the lifting mechanism through the control device to control the second bed board to rise or fall to a suitable position to realize automatic and fast And the height and angle of the second bed board can be adjusted conveniently, which solves the problem that the existing medical bed has low efficiency and cannot meet the needs of users when the height and angle are adjusted manually. And when the second bed board is adjusted to swing to be in a horizontal position with the first bed board, the locking mechanism can lock the second bed board to the first bed board to form an integral fixed structure, which can prevent the second bed board from being disturbed by external forces Generate upward swing and damage the personal safety of the patient.

3. The present invention slides the first slider into the second groove when the second bed board is adjusted to swing to a level with the first bed board. At this time, since the length of the first slider is greater than that of the second The length of the groove is such that the left end of the first slider is snapped into the first groove and the first slider is fixed to the second bed board by the U-shaped bolt, so that the second bed board has a clamping effect on the first slider. The bottom cannot swing and is locked with the first bed board to realize the fixed connection of the second bed board, which can prevent the second bed board from swinging upward under the interference of external force and damage the personal safety of the patient. , just pull out the U-shaped bolt and slide it into the second groove, then the second bed board will not be locked by the first slider and will be in a swingable state, so as to realize the unlocking and release of the second bed board, The structure is simple, ingenious and convenient to use.

4. When the handle of the present invention is applied with a forward force by the user, the first sensor receives the force and sends a signal to the control device, so that the control device outputs a signal to control the synchronous rotation of the first motor and the second motor to drive the frame Move forward in a straight line. And when the user applies an active force to the left or right, the second sensor on the corresponding position at the two ends of the handle receives the active force and sends a signal to the control device. At this time, the control device outputs a signal to control the first motor and the second motor. When the differential speed is rotated, the front wheels will be twisted at a certain angle, so as to realize the left or right turn of the frame, so as to automatically control the forward or turning of the frame according to the direction of movement of the human hand. It has the characteristics of simple structure, automatic detection and control .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the first structural representation of intelligent stretcher trolley of the present invention;

Fig. 2 is a schematic structural view of the locking mechanism of the smart stretcher trolley of the present invention in a locked state;

Fig. 3 is a structural schematic diagram of the locking mechanism of the intelligent stretcher trolley of the present invention in an unlocked state;

Fig. 4 is the second structural schematic diagram of intelligent stretcher trolley of the present invention;

Fig. 5 is the 3rd structural schematic diagram of intelligent stretcher trolley of the present invention;

FIG. 6 is a top view of FIG. 5 .

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example

Referring to Figures 1 to 4, the present embodiment relates to an intelligent stretcher vehicle, including a vehicle frame 1 and a bed mechanism 2, a lifting mechanism 3, a locking mechanism 4, a driving device, an obstacle detection system and a control device installed on the vehicle frame 1, The bed mechanism 2 is detachably mounted on the vehicle frame 1, and the bed mechanism 2 includes a first bed board 21 and a second bed board 22 hinged to the first bed board 21, the first bed board 21 and the second bed board 22 is arranged on the upper surface of the vehicle frame 1, and the first bed board 21 is fixedly installed on the vehicle frame 1; the power output end of the lifting mechanism 3 is connected with the second bed board 22 to drive the second bed board 22 to swing The locking mechanism 4 is located on the bed mechanism 2; when the upper surfaces of the first bed board 21 and the second bed board 22 are at the same horizontal level, the locking mechanism 4 will lock the first bed board 21 and the second bed board 22 are locked together; the obstacle detection system is fixedly installed on the front end of the vehicle frame 1, and the obstacle detection system and the driving device are electrically connected with the control device. The control device is a single-chip microcomputer or PLC.

The stretcher can detect obstacles on the road through the obstacle detection system, and then send the detected obstacle shape and position information to the control device, and then the control device drives the driving device to make the frame 1 turn and avoid the obstacles on the road. Obstacles, automatic detection and control of the whole movement, no need for manual operation and control, high degree of intelligence, simple and convenient to use. The obstacle detection system performs distance detection through the ultrasonic module 10 to realize the function of obstacle detection.

The lifting mechanism 3 of this structure is electrically connected with the control device. When the height and angle of the second bed board 22 need to be adjusted, the lifting mechanism 3 only needs to be controlled by the control device to control the second bed board 22 to rise or fall to a suitable position. 1. The height and angle of the second bed board 22 can be adjusted quickly and conveniently, which solves the problem that the existing medical bed is inefficiently adjusted by manual height and angle and cannot meet the needs of users.

When the second bed board 22 is adjusted to swing to be in a horizontal position with the first bed board 21, the locking mechanism 4 can lock the second bed board 22 to the first bed board 21 to form an integral fixed structure, which can prevent the second bed board 22 from Under the interference of external force, it will swing upward and damage the personal safety of the patient.

As shown in Fig. 5 and Fig. 6, a handle sensing control device 11 is provided on the vehicle frame 1, and the handle sensing control device 11 includes a handle 12, a first sensor 13, a second sensor 14 and a connecting piece 15. The front end of the handle 12 is fixedly connected to the vehicle frame 1 through a first sensor 13; One end is connected; the frame 1 has a slot 16, and the other end of the connector 15 can be slidably inserted into the slot 16; the first sensor 13 and the second sensor 14 are electrically connected to the control device.

When the obstacle detection system fails, the stretcher is activated in standby mode. At this time, the user applies a forward force, so that one end of the connecting piece 15 can slide in the slot 16, so that the handle 12 can move forward and press the first sensor 13, and then the first sensor 13 can send Pressure signal to the control unit. And when the user applies an active force to the left or right, the connecting piece 15 is stuck in the slot 16, so that the active force of the handle 12 can be transmitted to the second sensor 14 and press the second sensor 14, and then This enables the second sensor 14 to send a pressure signal to the control device. Therefore, under the function of the connecting piece 15, the handle 12 can realize the pressing action of the first sensor 13 and the second sensor 14 against the hand, and the structure is simple and the installation is convenient.

As shown in Figure 5, the drive device includes a first motor 51 and a second motor 52, and the bottom of the vehicle frame 1 is provided with a front wheel 17 and a rear wheel 18; The control device is electrically connected; the front wheel 17 is a universal wheel, and the first motor 17 and the second motor 18 are respectively installed on the two rear wheels 18 to drive the rear wheels 18 to rotate.

When the handle 12 of this structure is applied forward force by the user, the first sensor 13 receives the force and sends a signal to the control device, so that the control device outputs a signal to control the first motor 17 and the second motor 18 to rotate synchronously and drive The vehicle frame 1 moves forward in a straight line. And when the user applied an active force to the left or right, the second sensor 14 on the corresponding position at the two ends of the handle 12 was subjected to the active force and sent a signal to the control device. At this time, the control device output signal to control the first motor 17 and The second motor 18 rotates at a differential speed, and the front wheel 17 will twist a certain angle, thereby realizing the left turn or right turn of the vehicle frame 1, thereby automatically controlling the forward or turning of the vehicle frame 1 according to the direction of action of the human hand, and has a simple structure. , Automatic detection and control features.

When the handle 12 of this structure is applied with a forward force by the user, the first sensor 13 receives the force and sends a signal to the control device, so that the control device outputs a signal to control the vehicle frame to move forward in a straight line. And when the user applies the active force to the left or the right, the second sensor 14 on the corresponding position at the two ends of the handle 12 is subjected to the active force and sends a signal to the control device. Turn or turn right, thereby automatically controlling the forward or turning of the frame 11 according to the movement direction of the human hand, judging the movement direction of the human hand, and then judging the user's willingness to use. It has the characteristics of simple structure, automatic detection and control.

As shown in Fig. 2 and Fig. 3, the first bed board 21 and the second bed board 22 have a first groove 211 and a second groove 221 respectively on the sides; the locking mechanism 4 includes a first slider 41 and U-shaped bolt 42, the first slider 41 can be slidably installed in the first groove 211 and the second groove 221; the length of the first slider 41 is smaller than the first groove 211 and longer than the second groove The length of groove 221; 22 locked together. As shown in Fig. 3 and Fig. 4, when the second bed board 22 is adjusted to swing to the horizontal position with the first bed board 21, the first slide block 41 is slid into the second groove 221. The length of a slider 41 is greater than the length of the second groove 221, so that the left end of the first slider 41 is snapped into the first groove 211 and the first slider 41 is fixed to the second bed board 22 through the U-shaped bolt 42 so that the second bed board 22 cannot swing under the clamping action of the first slider 41 and is locked together with the first bed board 21 to realize the fixed connection of the second bed board 22 and prevent the second bed board 22 from being affected by the external force. Under the interference, the upward swing is generated and the personal safety of the patient is damaged, and when the second bed board 22 needs to be adjusted, only the U-shaped latch 42 is pulled out and slides into the second groove 221, and the second bed board 22 will not Clamped by the first slider 41 to be in a swingable state, so as to realize the unlocking and releasing of the second bed board 22, the structure is simple, ingenious and easy to use.

The first slider 41 has a first slot 411 and a second slot 412, and the first bed board 21 and the second bed board 22 have a third slot 212 and a fourth slot 222 respectively; When the first slider 41 slides into the second groove 221, the two ends of the U-shaped bolt 42 are respectively inserted into the second slot 412 and the fourth slot 222 to lock the first bed board 21 and the second bed board 22 in place. together; when the first slider 41 slides into the first groove 211, the two ends of the U-shaped bolt 42 are respectively inserted into the first slot 411 and the third slot 212 to lock the first slider 41 to the first slot. On the bed board 21. When the second bed board 22 is adjusted to swing to be in a horizontal position with the first bed board 21, slide the first slider 41 into the second groove 221, and insert the two ends of the U-shaped bolt 42 into the first groove respectively. The first slider 41 is fixed to the second bed board 22 through the hole 411 and the third slot hole 212 to prevent the first slider 41 from sliding, so that the second bed board 22 is under the clamping action of the first slider 41 It cannot swing but is locked together with the first bed board 21 to realize the fixed connection of the second bed board 22 .

The first slider 41 between the first slot 411 and the second slot 412 is provided with a fifth slot 413, and the first slot 411 and the second slot 412 are provided with the U U-shaped pin 42; when the first slider 41 slides into the second groove 221, the two ends of the U-shaped pin 42 on the second slot 412 are respectively inserted into the second slot 412 and the fourth slot 222 to place the second slot 412 The first bed board 21 and the second bed board 22 are locked together; when the first slider 41 slides into the first groove 211, the two ends of the U-shaped bolt 42 on the second slot 412 are respectively inserted into the second slot 412 and the second slot 412, and the two ends of the U-shaped bolt 42 on the first slot 411 are respectively inserted into the first slot 411 and the third slot 212 to lock the first slider 41 to the first bed board 21 . In this structure, the first slot 411 and the second slot 412 at both ends of the first slider 41 are respectively provided with a U-shaped pin 42 . When the first slider 41 is located in the first groove 211, the two ends of the U-shaped pin 42 on the first slot 411 are respectively inserted into the first slot 411 and the third slot 212. At this time, the second slot Two ends of the U-shaped bolt 42 in the hole 412 are respectively inserted into the second slot 412 and the fifth slot 413 . And when the first slider 41 was located in the second groove 221, the two ends of the U-shaped bolt 42 on the first slot 411 were inserted into the first slot 411 and the fifth slot 413 respectively. The two ends of the U-shaped pin 42 in the slot 412 are respectively inserted into the second slot 412 and the fourth slot 222 to form a mounting structure for the pins at both ends, which solves the problem of the low efficiency of a single U-shaped pin 42 for replacement and insertion. problem, greatly improving the efficiency and convenience of installing and fixing the first slider 41 .

As shown in Figure 1, the lifting mechanism 3 includes a motor 31, a connecting sleeve 32, a slide rod 33, a second slider 34 and a screw rod 35, the motor 31 is fixedly mounted on the vehicle frame 1, and the slide Bar 33 is set as two, and slide bar 33 is fixedly installed on the described vehicle frame 1; The second slider 34 is fixedly connected, and the second slider 34 presses the bottom surface of the second bed board 22; the connecting sleeve 32 is provided with an internal thread, and the output end of the motor 31 is connected to the connecting sleeve One end of 32 is fixedly connected, and the other end of the screw rod 35 is screwed with the other end of the connecting sleeve 32 for transmission connection. When working, the control device controls the motor 31 to drive the connecting sleeve 32 to rotate. The second slider 34 is guided by the slide rod 33, and the lower end of the screw rod 35 that is screwed with the connecting sleeve 32 moves up or down under the drive of the connecting sleeve 32, so that the upper end of the screw rod 35 that is fixedly connected The second slider 34 is driven to move up or down, thereby realizing the function of adjusting the height and angle of the second bed board 22 , and has the characteristics of automatically, quickly and conveniently adjusting the height and angle of the second bed board 22 .

A pulley 36 is rotatably mounted on the upper end of the second sliding block 34 , and the pulley 36 presses against the bottom surface of the second bed board 22 . When the second slide block 34 moves up or down, there is rotational friction between the pulley 36 and the second bed board 22, which prevents rigid friction from occurring between the second bed board 22 and the second slide block 34 and causes the second bed board 22 to swing incorrectly. Smooth and noiseless appearance.

As shown in Figures 1 and 4, a first through hole and a second through hole are opened on the first bed board 21, an insertion hole is opened on the vehicle frame 1, and a "J" type pin 5, the longer end of the "J" type pin 5 is inserted into the first through hole, and the shorter end of the "J" type pin 5 is inserted into the second through hole and the jack in turn Inside, the first bed board 21 is fixedly installed on the vehicle frame 1 . This structure can quickly install the first bed board 21 on the vehicle frame 1 through the plug-in structure of the "J" type latch 5, or quickly disassemble the first bed board 21 from the vehicle frame 1. The structure is simple, easy to replace and install. Easy to disassemble.

The longer end of the "J"-shaped pin 5 is provided with a limit block, which prevents the longer end of the "J"-shaped pin 5 from going out of the first through hole. Under the blocking effect of the limit block, the longer end of the "J"-shaped latch 5 cannot escape from the first through hole, which can prevent the latch from being lost, and facilitates the installation and disassembly of the first bed board 21.

The above disclosure is only a preferred embodiment of the present invention, which certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (10)

1. An intelligent stretcher vehicle, characterized in that: it comprises a vehicle frame and a bed mechanism installed on the vehicle frame, a lifting mechanism, a locking mechanism, an obstacle detection system, a driving device and a control device, and the described bed mechanism is detachably mounted on on the vehicle frame, and the bed mechanism includes a first bed board and a second bed board hinged with the first bed board, the first bed board and the second bed board are arranged on the upper surface of the vehicle frame, and the first bed board Fixedly installed on the vehicle frame; the power output end of the lifting mechanism is connected with the second bed board to drive the second bed board to swing; the locking mechanism is arranged on the bed position mechanism, between the first bed board and the second bed board When the upper surface of the bed is at the same horizontal level, the locking mechanism locks the first bed board and the second bed board together; the obstacle detection system is fixedly installed on the front end of the vehicle frame, and the obstacle detection system and the driving device Electrically connected with the control device. 2. An intelligent stretcher vehicle according to claim 1, characterized in that: the frame is provided with a handle sensing control device, and the handle sensing control device includes a handle, a first sensor, a second sensor and a connecting piece , the front end of the handle is fixedly connected to the vehicle frame through the first sensor; the second sensor and the connecting piece are set as two, and the two ends of the handle are connected to one end of the connecting piece through the second sensor; the vehicle frame A slot hole is opened on the top, and the other end of the connector can be slidably inserted into the slot hole; the first sensor and the second sensor are electrically connected with the control device. 3. A kind of intelligent stretcher vehicle according to claim 1, characterized in that: said driving device comprises a first motor and a second motor, said vehicle frame bottom is provided with a front wheel and a rear wheel; said first motor and the second motor are electrically connected with the control device; the front wheel is a universal wheel, and the first motor and the second motor are respectively installed on the two rear wheels to drive the rear wheels to rotate. 4. A kind of intelligent stretcher trolley according to claim 1, characterized in that: first grooves and second grooves are formed on the sides of the first bed board and the second bed board; the locking mechanism includes A first slider and a U-shaped bolt, the first slider can be slidably installed in the first groove and the second groove; the length of the first slider is less than the first groove and greater than that of the second groove Length; when the first slider slides into the second groove, the two ends of the U-shaped bolt are respectively inserted into the first slider and the second bed board to lock the first bed board and the second bed board together. 5. An intelligent stretcher trolley according to claim 4, characterized in that: the first slider is provided with a first slot and a second slot, and the first bed board and the second bed board are respectively There are a third slot and a fourth slot; when the first slider slides into the second groove, the two ends of the U-shaped bolt are respectively inserted into the second slot and the fourth slot to connect the first bed board and the second slot. The two bed boards are locked together; when the first slider slides into the first groove, the two ends of the U-shaped bolt are respectively inserted into the first slot and the third slot to lock the first slider to the first bed board superior. 6. An intelligent stretcher trolley according to claim 5, characterized in that: a fifth slot is opened on the first slider between the first slot and the second slot, and the first slot Both the hole and the second slot are provided with the U-shaped pin; when the first slider slides into the second groove, the two ends of the U-shaped pin on the second slot are inserted into the second slot and the second slot respectively. The first bed board and the second bed board are locked together by four slots; when the first slider slides into the first groove, the two ends of the U-shaped bolt on the second slot are inserted into the second slot and the second slot respectively. The second slot, and the two ends of the U-shaped bolt on the first slot are respectively inserted into the first slot and the third slot to lock the first slider to the first bed board. 7. An intelligent stretcher vehicle according to claim 1, characterized in that: the lifting mechanism includes a motor, a connecting sleeve, a slide rod, a second slider and a screw rod, and the motor is fixedly installed on the vehicle frame On the above, two sliders are set, and the sliders are fixedly installed on the frame; The second slider is fixedly connected, and the second slider presses the bottom surface of the second bed board; the connecting sleeve is provided with internal threads, and the output end of the motor is fixedly connected with one end of the connecting sleeve, so that The other rod of the screw rod is screwed to the other end of the connecting sleeve. 8 . The intelligent stretcher trolley according to claim 7 , wherein a pulley is rotatably mounted on the upper end of the second slider, and the pulley presses against the bottom surface of the second bed board. 9. An intelligent stretcher trolley according to claim 4, characterized in that: a first through hole and a second through hole are opened on the first bed plate, an insertion hole is opened on the frame, and the first through hole is opened on the frame. A "J" type pin is slidably installed on a through hole, the longer end of the "J" type pin is inserted into the first through hole, and the shorter end of the "J" type pin is inserted into the second through hole in turn. The first bed board is fixedly installed on the vehicle frame in the through hole and the jack. 10. An intelligent stretcher trolley according to claim 9, characterized in that: the longer end of the "J" type pin is provided with a limit block, and the limit block prevents the longer end of the "J" type pin from coming out first via.