A fall-proof critically ill patient transfer bed

Abstract

The present invention discloses a patient transport bed for preventing falling hazards, which belongs to the technical field of patient transport beds, and includes a frame device, on which a lifting device and four roller devices are arranged, wherein the frame device is used to drive the lifting device to rise and fall, the lifting device is used to place patients, and the roller device is used to move. The pedal mechanism provided in the present invention is provided with two usage modes, when stepped on lightly at a high frequency, it will drive the upper slide to rise, and when stepped on heavily, it will cause the upper slide to slowly descend, and the lifting and lowering of the upper slide is achieved by a pedal, which has high reliability, and at the same time, the upper slide is moved toward the outside of the mobile frame while the upper slide rises through the cooperation of the inclined slide cylinder and the inner inclined slide column, which is convenient for placing a stretcher on the mobile frame, and is easy to operate; the four roller devices provided in the present invention can rotate freely, and by providing a friction sheet and a friction plate, when the speed of the transport bed is too fast, it will automatically decelerate to prevent the patient from being injured by the excessively fast moving speed.

Description

Technical Field

[0001] The present invention relates to the technical field of patient transfer beds, and in particular to a fall-proof critically ill patient transfer bed. Background Art

[0002] In clinical work, it is often necessary to transfer patients from one department to another, such as for various examinations or transfer to wards. During the transfer process, the patient's condition may change due to bumps, moving, etc., which may seriously endanger his life. Medical transfer beds need to have certain safety, comfort, ease of use and reliability. First, they need to have a stable support structure to ensure the safety of patients during transfer. Secondly, they should have an easy-to-operate control system to facilitate medical staff to operate quickly. Finally, they should have good flexibility and can be moved conveniently and quickly. Patient transfer beds in the existing technology are either not convenient for placing patients on the bed, or they rely too much on the control mechanism. If the control mechanism fails, the entire device will fail, and it is dangerous to use. Summary of the invention

[0003] In response to the above technical problems, the technical solution adopted by the present invention is: a fall-proof critically ill patient transfer bed, including a frame device, the frame device includes a mobile frame, the mobile frame is fixedly equipped with an inclined slide cylinder, the frame device is provided with a lifting device and four roller devices, the frame device is used to drive the lifting device to rise and fall, the lifting device includes an upper slide, the upper slide is fixedly equipped with an inner sliding inclined column, the inner sliding inclined column slides in the inclined slide cylinder, the lifting device is used to place patients, the roller device includes a rotating wheel seat, the rotating wheel seat is rotatably installed with the mobile frame, and the roller device is used for movement.

[0004] Furthermore, the frame device includes two vertical sliding rods and a fixed rack fixedly mounted on the mobile frame, and a fixed guardrail is fixedly mounted on the mobile frame.

[0005] Furthermore, a pedal mechanism is provided on the movable frame, and the pedal mechanism includes a pedal slidably mounted on the movable frame, an active rack is fixedly mounted on the pedal, an external gear is rotatably mounted on the movable frame, an internal gear is fixedly mounted on the external gear, the internal gear is meshed with the active rack, a sliding block is slidably mounted on the movable frame, a transverse rack is fixedly mounted on the sliding block, the transverse rack is meshed with the external gear, a return spring is provided between the sliding block and the movable frame, a push spring is fixedly mounted on the sliding block, and a push rod is fixedly mounted on the push spring.

[0006] Furthermore, a cylinder mechanism is provided on the movable frame, and the cylinder mechanism includes a cylinder body fixedly mounted on the movable frame, an intake pipe is fixedly mounted on the cylinder body, a push rod is slidably mounted on the intake pipe, an intake port is provided on the intake pipe, a one-way baffle is slidably mounted in the intake pipe, a one-way spring is provided between the one-way baffle and the intake pipe, an inner push column is slidably mounted in the cylinder body, an inner push spring is provided between the inner push column and the cylinder body, a push rack is fixedly mounted on the inner push column, and a transfer gear is rotatably mounted on the movable frame, and the transfer gear is meshed with the push rack.

[0007] Furthermore, an exhaust mechanism is provided on the cylinder body, and the exhaust mechanism includes a front exhaust plate slidably mounted on the cylinder body, an upper spring is provided between the front exhaust plate and the movable frame, an exhaust pipe is fixedly mounted on the cylinder body, a rear opening plug is slidably mounted on the exhaust pipe, and an opening spring is provided between the rear opening plug and the exhaust pipe.

[0008] Furthermore, an opening mechanism is provided on the pedal, and the opening mechanism includes an air release frame fixedly mounted on the pedal, an outward push frame and a lower push rod are fixedly mounted on the air release frame, and a slope is provided on the outward push frame.

[0009] Furthermore, a lifting mechanism is provided on the mobile frame, and the lifting mechanism includes a lower sliding block slidably mounted on the mobile frame, a lifting rack is fixedly mounted on the lower sliding block, the lifting rack is meshed with the transfer gear, an inner rotating rod is rotatably mounted on the lower sliding block, an outer rotating rod is rotatably mounted on the inner rotating rod through a center point, the outer rotating rod is rotatably mounted on the mobile frame, a lifting plate is slidably mounted on the mobile frame, a lifting slider is fixedly mounted on the lifting plate, and the lifting slider is slidably mounted on the upper slide.

[0010] The pedal is stepped on lightly at a high frequency. The pedal goes down and drives the active rack to go down, thereby driving the inner gear and the outer gear to rotate, thereby driving the cross rack and the sliding block to slide toward the cylinder body. The return spring is compressed, and the push spring drives the push rod to slide along the intake pipe to push the air into the cylinder body. The gas enters from the air hole of the intake pipe. The gas enters the cylinder body and pushes the inner push column and the push rack to move. The inner push spring is compressed. During this process, the outer push frame does not contact the rear opening plug, and the lower push rod does not contact the front exhaust plate. When the foot leaves the pedal, the return spring rebounds, driving the sliding block and the pedal to reset. Repeatedly stepping on the pedal will continuously inflate the cylinder body, and when the gas passes through the one-way baffle, it will The one-way spring is pushed open and compressed. When no gas enters, the one-way spring drives the one-way baffle to close the intake pipe, and the gas in the cylinder cannot be discharged. The pedal is lightly stepped on at a high frequency to make the pushing rack move, and the pushing rack drives the transfer gear to rotate, thereby driving the lifting rack and the lower sliding block to slide along the moving frame, thereby driving the inner rotating rod to rotate, and the inner rotating rod drives the outer rotating rod to rotate relative to the moving frame, and the lifting plate is driven to rise along the moving frame through the outer rotating rod and the inner rotating rod, and the sliding of the lifting slider and the upper slide makes the upper slide and the inner sliding inclined column rise along the inclined slide cylinder while moving in the direction away from the fixed guardrail, so as to facilitate placing the stretcher on the upper slide.

[0011] When it is necessary to lower the upper slide, step on the pedal hard and press it to the bottom. The pedal drives the deflation frame, the external push frame and the lower push rod to descend. At this time, the return spring and the push spring will be compressed, and the external push frame will contact the rear opening plug. Under normal conditions, the opening spring drives the rear opening plug to close the exhaust pipe. The external push frame descends to push the rear opening plug outward, and the opening spring is compressed. At this time, the gas in the cylinder is discharged through the exhaust pipe. At the same time, the lower push rod pushes the front exhaust plate to descend, the upper push spring is compressed, and the gas at the front end of the cylinder is discharged. The inner push column and the push rack are slowly reset under the action of the inner push spring, thereby driving the lifting plate and the lifting slider to descend, thereby driving the upper slide and stretcher to descend, and the inner sliding inclined column descends along the inclined slide cylinder. When the upper slide descends to contact with the moving frame, the pedal is released.

[0012] Furthermore, the lifting device includes a stretcher placed on an upper slide, a rotating guardrail is rotatably mounted on the upper slide, a rotating gear is fixedly mounted on the rotating guardrail, and when the upper slide is placed on the moving frame, the rotating guardrail is meshed with the fixed rack.

[0013] After the upper slide is raised, the stretcher with the patient is placed on the upper slide. At this time, the rotating guardrail is in a tilted state, which is convenient for placing the stretcher on the upper slide. As the upper slide descends, the rotating gear and the fixed rack will engage. Since the upper slide is descended by sliding the inner sliding inclined column and the inclined slide cylinder, the rotating gear will also move to the right when it descends. The rotating gear and the fixed rack have a certain meshing gap. When the rotating gear just engages with the fixed rack, it starts to rotate under the action of the fixed rack. When the upper slide completely falls on the mobile frame, the rotating gear and the rotating guardrail will rotate ninety degrees and stand up. That is, when the upper slide falls on the mobile frame, the rotating guardrail stands up, and together with the fixed guardrail, prevents the patient from falling during transportation.

[0014] Furthermore, the roller device comprises a rotating wheel rotatably mounted on a rotating wheel seat, a friction plate is fixedly mounted on the rotating wheel seat, a friction seat is fixedly mounted on the rotating wheel, a plurality of friction plates are rotatably mounted on the friction seat, and a torsion spring is arranged between the friction plate and the friction seat.

[0015] The mobile frame is moved by pushing it by medical staff. Each rotating wheel seat is rotatable relative to the mobile frame, so that the mobile frame can move in all directions. The rotation of the rotating wheel will drive the friction seat to rotate. When the moving speed is too fast, the friction plate will rotate relative to the friction seat due to centrifugal force, and the torsion spring will be twisted, so that the friction plate will contact with the friction plate. Under the action of the friction plate, the friction plate will be decelerated, thereby decelerating the rotating wheel to prevent the danger caused by excessive moving speed.

[0016] Compared with the prior art, the present invention has the following advantages: (1) The pedal mechanism provided in the present invention has two usage modes. When the pedal is stepped on lightly at a high frequency, the upper slide will be driven to rise. When the pedal is stepped on hard, the upper slide will be slowly lowered. The lifting and lowering of the upper slide is achieved by a pedal, which has high reliability. At the same time, the upper slide is moved toward the outside of the mobile frame while rising through the cooperation of the inclined slide cylinder and the inner inclined slide column, which is convenient for placing the stretcher on the mobile frame and easy to operate; (2) The upper slide provided in the present invention will automatically lower the rotating guardrail during the rising process, which is convenient for placing the stretcher and the patient on it on the upper slide. After the upper slide is lowered, the rotating guardrail automatically stands up and cooperates with the fixed guardrail to prevent the patient from falling during the transportation process and causing injury; (3) The four roller devices provided in the present invention can rotate freely, and by providing friction plates and friction plates, when the speed of the transfer bed is too fast, it will automatically slow down to prevent the patient from being injured by the excessive movement speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 The structure of the frame device of the present invention is shown in FIG. Figure 1 .

[0019] Figure 3 The structure of the frame device of the present invention is shown in FIG. Figure 2 .

[0020] Figure 4 It is a schematic diagram of the exhaust mechanism structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the cylinder mechanism of the present invention.

[0022] Figure 6 The structure of the lifting mechanism of the present invention is shown in FIG. Figure 1 .

[0023] Figure 7 The structure of the lifting mechanism of the present invention is shown in FIG. Figure 2 .

[0024] Figure 8 The lifting device structure of the present invention is shown in FIG. Figure 1 .

[0025] Fig. 9 The lifting device structure of the present invention is shown in FIG. Figure 2 .

[0026] Fig.10 The structure of the roller device of the present invention is shown in FIG. Figure 1 .

[0027] Fig.11 The structure of the roller device of the present invention is shown in FIG. Figure 2 .

[0028] Figure numerals: 101-mobile frame; 102-vertical slide bar; 103-fixed rack; 104-fixed guardrail; 105-pedal; 106-active rack; 107-external gear; 108-transverse rack; 109-cylinder; 110-pushing rack; 111-transfer gear; 112-lifting rack; 113-inclined slide cylinder; 114-lifting plate; 115-lifting slider; 116-internal gear; 117-sliding block; 118-return spring; 119-pushing spring; 120-pushing rod; 121-intake pipe; 122-front exhaust plate; 123-upper Top spring; 124-one-way baffle; 125-one-way spring; 126-rear opening plug; 127-opening spring; 128-exhaust pipe; 129-deflation rack; 130-lower push rod; 131-outward push rack; 132-inner push column; 133-inner push spring; 134-lower sliding block; 135-outer rotating rod; 136-inner rotating rod; 201-upper sliding frame; 202-stretcher; 203-rotating guardrail; 204-rotating gear; 205-inner sliding inclined column; 301-rotating wheel seat; 302-rotating wheel; 303-friction plate; 304-friction seat; 305-friction plate. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Example: Reference Figure 1-Figure 11 A fall-proof critically ill patient transport bed comprises a frame device, the frame device comprises a mobile frame 101, an inclined slide 113 is fixedly mounted on the mobile frame 101, a lifting device and four roller devices are arranged on the frame device, the frame device is used to drive the lifting device to rise and fall, the lifting device comprises an upper slide 201, an inner sliding inclined column 205 is fixedly mounted on the upper slide 201, the inner sliding inclined column 205 slides in the inclined slide 113, the lifting device is used to place the patient, the roller device comprises a rotating wheel seat 301, the rotating wheel seat 301 is rotatably mounted with the mobile frame 101, and the roller device is used to move.

[0031] like Figure 2-Figure 7 As shown, the frame device includes two vertical sliding rods 102 and a fixed rack 103 fixedly mounted on the mobile frame 101, and a fixed guardrail 104 is fixedly mounted on the mobile frame 101.

[0032] like Figure 2-Figure 7 As shown, a pedal mechanism is provided on the mobile frame 101, and the pedal mechanism includes a pedal 105 slidably mounted on the mobile frame 101, an active rack 106 is fixedly mounted on the pedal 105, an external gear 107 is rotatably mounted on the mobile frame 101, an internal gear 116 is fixedly mounted on the external gear 107, the internal gear 116 is meshed with the active rack 106, a sliding block 117 is slidably mounted on the mobile frame 101, a transverse rack 108 is fixedly mounted on the sliding block 117, the transverse rack 108 is meshed with the external gear 107, a return spring 118 is provided between the sliding block 117 and the mobile frame 101, a push spring 119 is fixedly mounted on the sliding block 117, and a push rod 120 is fixedly mounted on the push spring 119.

[0033] like Figure 2-Figure 7 As shown, a cylinder mechanism is provided on the movable frame 101, and the cylinder mechanism includes a cylinder body 109 fixedly mounted on the movable frame 101, an air intake pipe 121 is fixedly mounted on the cylinder body 109, a push rod 120 is slidably mounted with the air intake pipe 121, an air inlet is provided on the air intake pipe 121, a one-way baffle 124 is slidably mounted in the air intake pipe 121, a one-way spring 125 is provided between the one-way baffle 124 and the air intake pipe 121, an inner push column 132 is slidably mounted in the cylinder body 109, an inner push spring 133 is provided between the inner push column 132 and the cylinder body 109, a push rack 110 is fixedly mounted on the inner push column 132, and a transfer gear 111 is rotatably mounted on the movable frame 101, and the transfer gear 111 is meshed with the push rack 110.

[0034] like Figure 2-Figure 7As shown, an exhaust mechanism is provided on the cylinder body 109, and the exhaust mechanism includes a front exhaust plate 122 slidably mounted on the cylinder body 109, an upper spring 123 is provided between the front exhaust plate 122 and the movable frame 101, an exhaust pipe 128 is fixedly mounted on the cylinder body 109, a rear opening plug 126 is slidably mounted on the exhaust pipe 128, and an opening spring 127 is provided between the rear opening plug 126 and the exhaust pipe 128.

[0035] like Figure 2-Figure 7 As shown, the pedal 105 is provided with an opening mechanism, which includes a deflation frame 129 fixedly mounted on the pedal 105, on which an outward push frame 131 and a lower push rod 130 are fixedly mounted, and on which a slope is provided.

[0036] like Figure 2-Figure 7 As shown, a lifting mechanism is provided on the mobile frame 101, and the lifting mechanism includes a lower sliding block 134 slidably mounted on the mobile frame 101, a lifting rack 112 is fixedly mounted on the lower sliding block 134, the lifting rack 112 is meshed with the transfer gear 111, an inner rotating rod 136 is rotatably mounted on the lower sliding block 134, an outer rotating rod 135 is rotatably mounted on the inner rotating rod 136 through a center point, the outer rotating rod 135 is rotatably mounted on the mobile frame 101, a lifting plate 114 is slidably mounted on the mobile frame 101, a lifting slider 115 is fixedly mounted on the lifting plate 114, and the lifting slider 115 is slidably mounted on the upper slide 201.

[0037] The pedal 105 is stepped on lightly at a high frequency, and the pedal 105 moves downward, driving the active rack 106 to move downward, thereby driving the inner gear 116 and the outer gear 107 to rotate, thereby driving the cross rack 108 and the sliding block 117 to slide toward the cylinder body 109, and the return spring 118 is compressed, and the push spring 119 drives the push rod 120 to slide along the intake pipe 121, pushing the air into the cylinder body 109, and the gas enters from the air hole of the intake pipe 121, and the gas enters the cylinder The inner push column 132 and the rack 110 are pushed in the cylinder 109 to move, and the inner push spring 133 is compressed. During this process, the outer push frame 131 does not contact the rear opening plug 126, and the lower push rod 130 does not contact the front exhaust plate 122. When the foot leaves the pedal 105, the return spring 118 rebounds, driving the sliding block 117 and the pedal 105 to return to their original position. Repeatedly stepping on the pedal 105 will continuously inflate the cylinder 109, and when the gas passes through the one-way baffle 124, it will The one-way spring 125 is pushed open and the one-way spring 125 is compressed. When no gas enters, the one-way spring 125 drives the one-way baffle 124 to close the intake pipe 121, and the gas in the cylinder 109 cannot be discharged. As a result, the pedal 105 is lightly stepped on at a high frequency to make the push rack 110 move, and the push rack 110 drives the transfer gear 111 to rotate, thereby driving the lifting rack 112 and the lower sliding block 134 to slide along the moving frame 101, thereby driving the inner rotating rod 136 to rotate, and the inner rotating rod 136 drives the outer rotating rod 135 to rotate relative to the moving frame 101, and the lifting plate 114 is driven to rise along the moving frame 101 through the outer rotating rod 135 and the inner rotating rod 136, and the sliding of the lifting slider 115 and the upper slide 201 is coordinated, so that the upper slide 201 and the inner sliding inclined column 205 move in the direction away from the fixed guardrail 104 while rising along the inclined slide cylinder 113, so as to facilitate the stretcher 202 to be placed on the upper slide 201.

[0038] When the upper slide 201 needs to be lowered, the pedal 105 is stepped on hard and pushed to the bottom. The pedal 105 drives the deflation frame 129, the external push frame 131 and the lower push rod 130 to descend. At this time, the return spring 118 and the push spring 119 will be compressed, and the external push frame 131 will contact the rear opening plug 126. Under normal conditions, the opening spring 127 drives the rear opening plug 126 to close the exhaust pipe 128. The external push frame 131 descends to push the rear opening plug 126 outward, and the opening spring 127 is compressed. At this time, the air in the cylinder 109 is The gas is discharged through the exhaust pipe 128, and at the same time, the lower push rod 130 pushes the front exhaust plate 122 to descend, the upper push spring 123 is compressed, and the gas at the front end of the cylinder 109 is discharged. The inner push column 132 and the push rack 110 are slowly reset under the action of the inner push spring 133, thereby driving the lifting plate 114 and the lifting slider 115 to descend, thereby driving the upper slide 201 and the stretcher 202 to descend, and the inner sliding inclined column 205 descends along the inclined slide cylinder 113. When the upper slide 201 descends to contact with the moving frame 101, the pedal 105 is released.

[0039] like Figure 8 , Fig. 9 As shown, the lifting device includes a stretcher 202 placed on an upper slide 201, a rotating guardrail 203 is rotatably mounted on the upper slide 201, and a rotating gear 204 is fixedly mounted on the rotating guardrail 203. When the upper slide 201 is placed on the moving frame 101, the rotating guardrail 203 is meshed with the fixed rack 103.

[0040] After the upper slide 201 is raised, the stretcher 202 carrying the patient is placed on the upper slide 201. At this time, the rotating guardrail 203 is in a tilted state, which is convenient for placing the stretcher 202 on the upper slide 201. As the upper slide 201 descends, the rotating gear 204 and the fixed rack 103 will mesh. Since the upper slide 201 is descended by sliding the inner sliding inclined column 205 and the inclined slide cylinder 113, the rotating gear 204 will move to the right when descending, and the rotating gear 204 will move to the right when descending. 04 has a certain meshing clearance with the fixed rack 103. When the rotating gear 204 just meshes with the fixed rack 103, it starts to rotate under the action of the fixed rack 103. When the upper slide 201 completely falls onto the mobile frame 101, the rotating gear 204 and the rotating guardrail 203 will rotate ninety degrees and stand up. That is, when the upper slide 201 falls onto the mobile frame 101, the rotating guardrail 203 stands up, and together with the fixed guardrail 104, prevents the patient from falling during transportation.

[0041] like Fig.10 , Fig.11 As shown, the roller device includes a rotating wheel 302 rotatably mounted on a rotating wheel seat 301, a friction plate 303 is fixedly mounted on the rotating wheel seat 301, a friction seat 304 is fixedly mounted on the rotating wheel 302, a plurality of friction plates 305 are rotatably mounted on the friction seat 304, and a torsion spring is arranged between the friction plates 305 and the friction seat 304.

[0042] The medical staff pushes the mobile frame 101 to move, and each rotating wheel seat 301 is rotatable relative to the mobile frame 101, so that the mobile frame 101 can move in all directions. The rotation of the rotating wheel 302 will drive the friction seat 304 to rotate. When the moving speed is too fast, due to the centrifugal force, the friction plate 305 will rotate relative to the friction seat 304, the torsion spring will be twisted, and the friction plate 305 will contact with the friction plate 303. Under the action of the friction plate 303, the friction plate 305 is decelerated, thereby decelerating the rotating wheel 302 to prevent the danger caused by excessive moving speed.

[0043] The working principle of the anti-fall critically ill patient transport bed disclosed in the present invention is: the pedal 105 is stepped on lightly at a high frequency, and the pedal 105 is lowered to drive the active rack 106 to lower, thereby driving the internal gear 116 and the external gear 107 to rotate, thereby driving the cross rack 108 and the sliding block 117 to slide toward the cylinder 109, and the return spring 118 is compressed, and the push spring 119 drives the push rod 120 to slide along the air inlet pipe 121, pushing air into the cylinder 109, and the air The gas enters from the air hole of the intake pipe 121, and the gas enters the cylinder 109 to push the inner push column 132 and the push rack 110 to move, and the inner push spring 133 is compressed. During this process, the outer push frame 131 does not contact the rear opening plug 126, and the lower push rod 130 does not contact the front exhaust plate 122. When the foot leaves the pedal 105, the return spring 118 rebounds, driving the sliding block 117 and the pedal 105 to return to their original position. Repeatedly stepping on the pedal 105 will continuously inflate the cylinder 109, and the gas When passing through the one-way baffle 124, the one-way spring 125 will be pushed open, and the one-way spring 125 will be compressed. When no gas enters, the one-way spring 125 drives the one-way baffle 124 to close the intake pipe 121, and the gas in the cylinder 109 cannot be discharged. Therefore, by stepping on the pedal 105 at a high frequency, the rack 110 is pushed to move, and the rack 110 drives the transfer gear 111 to rotate, thereby driving the lifting rack 112 and the lower sliding block 134 to slide along the moving frame 101. Thereby, the inner rotating rod 136 is driven to rotate, and the inner rotating rod 136 drives the outer rotating rod 135 to rotate relative to the moving frame 101, and the lifting plate 114 is driven to rise along the moving frame 101 through the outer rotating rod 135 and the inner rotating rod 136, and the sliding of the lifting slider 115 and the upper slide 201 is coordinated, so that the upper slide 201 and the inner sliding inclined column 205 rise along the inclined slide cylinder 113 and move in the direction away from the fixed guardrail 104, so as to facilitate the stretcher 202 to be placed on the upper slide 201. After the upper slide 201 is raised, the stretcher 202 carrying the patient is placed on the upper slide 201. At this time, the rotating guardrail 203 is in a tilted state, which is convenient for placing the stretcher 202 on the upper slide 201. As the upper slide 201 descends, the rotating gear 204 and the fixed rack 103 will mesh. Since the upper slide 201 is descended by sliding the inner sliding inclined column 205 and the inclined slide cylinder 113, the rotating gear 204 will move to the right when descending, and the rotating gear 204 will move to the right when descending. 04 has a certain meshing clearance with the fixed rack 103. When the rotating gear 204 just meshes with the fixed rack 103, it starts to rotate under the action of the fixed rack 103. When the upper slide 201 completely falls onto the mobile frame 101, the rotating gear 204 and the rotating guardrail 203 will rotate ninety degrees and stand up. That is, when the upper slide 201 falls onto the mobile frame 101, the rotating guardrail 203 stands up, and together with the fixed guardrail 104, prevents the patient from falling during transportation.Then, the pedal 105 is stepped on again until it reaches the bottom. The pedal 105 drives the deflation frame 129, the push frame 131 and the lower push rod 130 to descend. At this time, the return spring 118 and the push spring 119 are compressed. The push frame 131 contacts the rear opening plug 126. Under normal conditions, the opening spring 127 drives the rear opening plug 126 to close the exhaust pipe 128. The push frame 131 descends to push the rear opening plug 126 outward. The opening spring 127 is compressed. At this time, the gas in the cylinder 109 passes through the exhaust pipe 128. 128 is discharged, and at the same time, the lower push rod 130 pushes the front exhaust plate 122 to descend, the upper push spring 123 is compressed, the gas at the front end of the cylinder 109 is discharged, and the inner push column 132 and the push rack 110 are slowly reset under the action of the inner push spring 133, thereby driving the lifting plate 114 and the lifting slider 115 to descend, thereby driving the upper slide 201 and the stretcher 202 to descend, and the inner sliding inclined column 205 descends along the inclined slide cylinder 113. When the upper slide 201 descends to contact with the moving frame 101, the pedal 105 is released. The medical staff pushes the mobile frame 101 to move, and each rotating wheel seat 301 is rotatable relative to the mobile frame 101, so that the mobile frame 101 can move in all directions. The rotation of the rotating wheel 302 will drive the friction seat 304 to rotate. When the moving speed is too fast, due to the centrifugal force, the friction plate 305 will rotate relative to the friction seat 304, the torsion spring will be twisted, and the friction plate 305 will contact with the friction plate 303. Under the action of the friction plate 303, the friction plate 305 is decelerated, thereby decelerating the rotating wheel 302 to prevent the danger caused by excessive moving speed.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fall-proof critically ill patient transport bed, comprising a frame device, characterized in that: The frame device comprises a movable frame (101), an inclined slide cylinder (113) is fixedly mounted on the movable frame (101), a lifting device and four roller devices are arranged on the frame device, the frame device is used to drive the lifting device to rise and fall, the lifting device comprises an upper slide frame (201), an inner sliding inclined column (205) is fixedly mounted on the upper slide frame (201), the inner sliding inclined column (205) slides in the inclined slide cylinder (113), the lifting device is used to place the patient, the roller device comprises a rotating wheel seat (301), the rotating wheel seat (301) is rotatably mounted with the movable frame (101), and the roller device is used to move; The movable frame (101) is provided with a pedal mechanism, the pedal mechanism comprising a pedal (105) slidably mounted on the movable frame (101), an active rack (106) fixedly mounted on the pedal (105), an external gear (107) rotatably mounted on the movable frame (101), an internal gear (116) fixedly mounted on the external gear (107), the internal gear (116) meshing with the active rack (106), a sliding block (117) slidably mounted on the movable frame (101), a transverse rack (108) fixedly mounted on the sliding block (117), the transverse rack (108) meshing with the external gear (107), a return spring (118) being arranged between the sliding block (117) and the movable frame (101), a push spring (119) fixedly mounted on the sliding block (117), and a push rod (120) fixedly mounted on the push spring (119); The movable frame (101) is provided with a cylinder mechanism, the cylinder mechanism comprising a cylinder body (109) fixedly mounted on the movable frame (101), an air intake pipe (121) fixedly mounted on the cylinder body (109), and a push rod (120) slidably mounted on the air intake pipe (121).

2. The anti-fall critically ill patient transfer bed according to claim 1, characterized in that: The frame device comprises two vertical sliding rods (102) and a fixed rack (103) fixedly mounted on the mobile frame (101); a fixed guardrail (104) is fixedly mounted on the mobile frame (101).

3. The anti-fall critically ill patient transfer bed according to claim 1, characterized in that: The air inlet pipe (121) is provided with an air inlet port, a one-way baffle (124) is slidably mounted in the air inlet pipe (121), a one-way spring (125) is arranged between the one-way baffle (124) and the air inlet pipe (121), an inner push column (132) is slidably mounted in the cylinder body (109), an inner push spring (133) is arranged between the inner push column (132) and the cylinder body (109), a pushing rack (110) is fixedly mounted on the inner push column (132), a transfer gear (111) is rotatably mounted on the movable frame (101), and the transfer gear (111) is meshed with the pushing rack (110).

4. The anti-fall critically ill patient transfer bed according to claim 3, characterized in that: An exhaust mechanism is provided on the cylinder body (109), and the exhaust mechanism comprises a front exhaust plate (122) slidably mounted on the cylinder body (109), an upper spring (123) is provided between the front exhaust plate (122) and the movable frame (101), an exhaust pipe (128) is fixedly mounted on the cylinder body (109), a rear opening plug (126) is slidably mounted on the exhaust pipe (128), and an opening spring (127) is provided between the rear opening plug (126) and the exhaust pipe (128).

5. The anti-fall critically ill patient transfer bed according to claim 1, characterized in that: The pedal (105) is provided with an opening mechanism, the opening mechanism comprising a deflation frame (129) fixedly mounted on the pedal (105), an outward push frame (131) and a lower push rod (130) fixedly mounted on the deflation frame (129), and a slope is provided on the outward push frame (131).

6. The anti-fall critically ill patient transfer bed according to claim 3, characterized in that: The movable frame (101) is provided with a lifting mechanism, and the lifting mechanism comprises a lower sliding block (134) slidably mounted on the movable frame (101), a lifting rack (112) fixedly mounted on the lower sliding block (134), the lifting rack (112) meshing with the transfer gear (111), an inner rotating rod (136) rotatably mounted on the lower sliding block (134), an outer rotating rod (135) rotatably mounted on the inner rotating rod (136) through a center point, the outer rotating rod (135) is rotatably mounted on the movable frame (101), a lifting plate (114) is slidably mounted on the movable frame (101), a lifting slider (115) is fixedly mounted on the lifting plate (114), and the lifting slider (115) is slidably mounted on the upper sliding frame (201).

7. The anti-fall critically ill patient transfer bed according to claim 2, characterized in that: The lifting device comprises a stretcher (202) placed on an upper slide (201); a rotating guardrail (203) is rotatably mounted on the upper slide (201); a rotating gear (204) is fixedly mounted on the rotating guardrail (203); when the upper slide (201) is placed on the moving frame (101), the rotating guardrail (203) meshes with the fixed rack (103).

8. The anti-fall critically ill patient transfer bed according to claim 1, characterized in that: The roller device comprises a rotating wheel (302) rotatably mounted on a rotating wheel seat (301), a friction plate (303) fixedly mounted on the rotating wheel seat (301), a friction seat (304) fixedly mounted on the rotating wheel (302), a plurality of friction plates (305) rotatably mounted on the friction seat (304), and a torsion spring is arranged between the friction plates (305) and the friction seat (304).

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