CN214104906U - Severe patient stretcher convenient to use - Google Patents

Abstract

The utility model belongs to the technical field of stretcher beds, in particular to a convenient stretcher bed for severe patients, which comprises a stretcher body, a transfusion rod, a first protective shell, a second protective shell and a damping mechanism; the top end of the stretcher body is fixedly connected with a spongy cushion, and the middle position of the bottom end of the stretcher body is fixedly connected with a medical cabinet; the transfusion rod is fixedly connected to the top end of the stretcher body and penetrates through the sponge mat; the first protective shell is fixedly connected to the bottom end of the stretcher body; the second protective shell is connected in the first protective shell in a sliding mode, and a lifting assembly is arranged in the second protective shell; the top the utility model provides a severe patient's stretcher that facilitates use to in solving the stretcher use on the current medical stretcher market, can not go up and down as required, and do not take precautions against earthquakes, not be equipped with the infusion support, it is inconvenient from the ambulance about coming, inconvenient carry out first aid measures such as oxygen uptake when removing, the inconvenient problem of depositing, for this, we propose a medical stretcher that the practicality is higher.

Description

Severe patient stretcher convenient to use

Technical Field

The utility model belongs to the technical field of the stretcher, specific severe patient's stretcher that facilitates use that says so.

Background

As rescue equipment in an ambulance, the stretcher bed is mainly matched with the ambulance for use and used for containing wounded personnel, transporting the wounded personnel to the ambulance, after the wounded personnel arrive at a hospital, containing the wounded personnel and delivering the wounded personnel to a corresponding department for rescue and treatment, if the weight ratio of the wounded personnel is heavier in the transporting process, a great deal of labor can be wasted when the wounded personnel are transported, and once the wounded personnel are toppled due to insufficient physical strength, secondary injury can be caused to the wounded personnel.

In the prior art, a stretcher bed on the market cannot be lifted as required in the using process, is not shockproof, is not provided with a transfusion frame, is inconvenient to get from an ambulance to the ambulance, and is inconvenient to take emergency measures such as oxygen inhalation during moving, and therefore the stretcher bed with higher practicability is provided.

SUMMERY OF THE UTILITY MODEL

In order to compensate the deficiency of the prior art, solve the current can not go up and down as required, and do not take precautions against earthquakes, do not be equipped with the infusion support, it is inconvenient from the ambulance about, inconvenient carry out the problem of first aid measures such as oxygen uptake when removing, the utility model provides a severe patient's stretcher of facilitating use.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a convenient stretcher bed for severe patients, which comprises a stretcher body, a transfusion rod, a first protective shell, a second protective shell and a damping mechanism; a group of U-shaped buckles are arranged on the outer side wall of the stretcher body; a fixing component is arranged on one side of the stretcher body, which is far away from the U-shaped buckle, and the fixing component corresponds to the U-shaped buckle in position; the top end of the stretcher body is fixedly connected with a spongy cushion, and the middle position of the bottom end of the stretcher body is fixedly connected with a medical cabinet; the transfusion rod is fixedly connected to the top end of the stretcher body and penetrates through the sponge mat; the first protective shell is fixedly connected to the bottom end of the stretcher body; the second protective shell is connected in the first protective shell in a sliding mode, and a lifting assembly is arranged in the second protective shell; the damping mechanism comprises a sliding rod, a buffer column, a sliding barrel and a first support plate; a second sliding groove is formed in the position, corresponding to the first protective shell, of the bottom end of the stretcher body; the sliding rod is connected in the second sliding groove in a sliding mode, and the top end of the sliding rod and the top end of the second sliding groove are fixedly connected with a first return spring; the first support plate is fixedly connected to the bottom end of the sliding rod; one end of the buffer column is fixedly connected to the bottom end of the first support plate, and the other end of the buffer column is connected in the sliding barrel in a sliding mode; the bottom end of the sliding barrel and the bottom end of the buffer column are fixedly connected with buffer springs; the sliding barrel is fixedly connected to the top end of the second protective shell.

Preferably, a first sliding groove is formed in one side, far away from the U-shaped buckle, of the stretcher body, and corresponds to the U-shaped buckle in position; the fixing component comprises a clamping block, a contraction spring, a reel and a trapezoidal block; the clamping block is connected in the first sliding groove in a sliding mode and is connected with the reel through a safety belt; the top end of the clamping block is provided with a third sliding groove, and the clamping block is in a fork shape; the trapezoidal block is connected in the No. four through grooves in a sliding mode, and the bottom end of the trapezoidal block and the bottom end of the No. three sliding groove are fixedly connected with a No. five return spring; a square sliding groove is formed in the stretcher body and is communicated with the first sliding groove, and the square sliding groove is perpendicular to the first sliding groove; the scroll is rotationally connected to the inner wall of the square sliding groove; one end of the contraction spring is fixedly connected with the reel, and the other end of the contraction spring is fixedly connected with the bottom end of the square sliding chute.

Preferably, the lifting assembly comprises a compression motor, a first gear and a square block; a moving seat is slidably connected in the second protective shell; the top end of the movable seat is provided with a through hole, and the bottom end of the movable seat is fixedly connected with a rotating wheel; the square block is fixedly connected to the top end of the inner part of the second protective shell, and the position of the square block corresponds to that of the through hole; a first rack is fixedly connected to the bottom end of the square block; one end of the first rack, which is far away from the square block, is fixedly connected with a limiting block; the bottom end of the moving seat is provided with a transmission assembly, and the transmission assembly corresponds to the position of the limiting block; the first gear is contacted with the side wall of the bottom end of the first rack, and the first gear is fixedly connected with the output end of the compression motor; the compression motor is fixedly connected to the inner side wall of the movable seat.

Preferably, the transmission assembly comprises an air bag, a second support plate, a piston cylinder, a piston rod and a first rotating shaft; the second support plate is fixedly connected to the inner wall of the moving seat, and corresponds to the position of the limiting block; the air bag is fixedly connected to the top end of the second support plate and is communicated with the piston cylinder through a hose; the piston cylinder is fixedly connected to the inner side wall of the bottom end of the movable base; the piston rod is connected in the piston cylinder in a sliding manner, and one end of the piston rod and the bottom end of the piston cylinder are fixedly connected with a second reset spring; the other end of the piston rod is fixedly connected with a second rack; one end of the bottom end of the second rack, which is far away from the piston rod, is contacted with a second gear; the second gear is fixedly connected with the first rotating shaft through a winding roller; the first rotating shaft is rotatably connected to the inner wall of the movable seat; the winding roller is fixedly connected with a thin rope; and one end of the thin rope, which is far away from the winding roller, is fixedly connected with an auxiliary assembly.

Preferably, a through groove is formed in the position, corresponding to the second gear, of the bottom end of the moving seat; the auxiliary assembly comprises a square block, a first roller, a second roller, a first linkage rod and a second linkage rod; the square block is connected in the through groove in a sliding mode, the top end of the square block is fixedly connected with the thin rope, and the bottom end of the square block and the bottom end of the movable seat are fixedly connected with a third reset spring; a first iron sheet and a second iron sheet are hinged to the side end of the square block; one end of the first iron sheet, which is far away from the square block, is hinged with the first roller; one end, far away from the square block, of the second iron sheet is hinged with the second roller; one end of the first linkage rod is hinged with the first idler wheel, and the other end of the first linkage rod is hinged with the second rotating shaft; one end of the second linkage rod is hinged with the second idler wheel, and the other end of the second linkage rod is hinged with a second rotating shaft; and the second rotating shaft is rotatably connected to the inner wall of the through groove.

Preferably, the first roller and the second roller are both connected with brake wheel assemblies in a sliding manner; the brake wheel assembly comprises a first support rod, a second support rod, a mounting block and a brake pad; the first supporting rod is connected with the first roller in a sliding manner; the second support rod is connected with the second roller in a sliding manner; the first support rod and the second support rod are hinged in the moving seat, and mounting blocks are arranged at the ends of the support rods, which are far away from the roller; and one end of the mounting block is fixedly connected with a brake pad.

Preferably, one end of the mounting block, which is far away from the brake pad, is fixedly connected with a fourth reset spring; one end of the fourth reset spring, which is far away from the mounting block, is fixedly connected with a vertical plate; the vertical plate is fixedly connected to the bottom end of the movable base.

The utility model has the advantages that:

1. the utility model provides a severe patient stretcher who facilitates use has made things convenient for medical personnel's work through combining of transfusion rod and medical cabinet, and better rescue patient utilizes fixed subassembly to let patient stabilize on the stretcher, and cooperation damper has avoided patient's secondary wound.

2. The stretcher bed can be moved to a required position at will by utilizing the brake wheel assembly and the lifting assembly, the height of the stretcher bed can be adjusted, and the rescue efficiency of medical personnel is effectively improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a perspective view of the present invention;

fig. 2 is a partial side view of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is an enlarged view of area B of FIG. 2;

FIG. 5 is an enlarged view of area C of FIG. 2;

FIG. 6 is an enlarged view of region D of FIG. 2;

fig. 7 is an enlarged view of the region E in fig. 2.

Illustration of the drawings:

1. a stretcher body; 11. a U-shaped buckle; 111. a fixing assembly; 12. a sponge cushion; 13. a medical cabinet; 14. a clamping block; 15. a retraction spring; 16. a reel; 17. a trapezoidal block; 18. a seat belt; 19. a fifth return spring; 2. a transfusion rod; 3. a protective shell; 31. a slide bar; 32. a buffer column; 33. sliding the barrel; 34. a first support plate; 35. a first return spring; 36. a buffer spring; 4. a second protective shell; 41. a compression motor; 42. a first gear; 43. a square block; 431. a first rack; 432. a limiting block; 44. a movable seat; 441. a square block; 442. a first roller; 443. a second roller; 444. a first linkage rod; 445. a second linkage rod; 446. a third return spring; 45. a rotating wheel; 46. a brake pad; 461. an air bag; 462. a second support plate; 463. a piston cylinder; 464. a piston rod; 465. a first rotating shaft; 466. a second rack; 467. a second gear; 468. a wind-up roll; 469. a second return spring; 47. a first strut; 48. a second strut; 49. mounting blocks; 491. a fourth return spring; 492. a vertical plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Specific examples are given below.

Referring to fig. 1-5, the utility model provides a convenient stretcher for severe patients, which comprises a stretcher body 1, a transfusion rod 2, a first protective shell 3, a second protective shell 4 and a damping mechanism; a group of U-shaped buckles 11 are arranged on the outer side wall of the stretcher body 1; a fixing component 111 is arranged on one side of the stretcher body 1 away from the U-shaped buckle 11, and the fixing component 111 corresponds to the U-shaped buckle 11 in position; the top end of the stretcher body 1 is fixedly connected with a sponge cushion 12, and the middle position of the bottom end of the stretcher body 1 is fixedly connected with a medical cabinet 13; the transfusion rod 2 is fixedly connected to the top end of the stretcher body 1, and the transfusion rod 2 penetrates through the sponge cushion 12; the first protective shell 3 is fixedly connected to the bottom end of the stretcher body 1; the second protective shell 4 is connected in the first protective shell 3 in a sliding mode, and a lifting assembly is arranged in the second protective shell 4; the damping mechanism comprises a sliding rod 31, a buffer column 32, a sliding barrel 33 and a first support plate 34; a second sliding groove is formed in the position, corresponding to the first protective shell 3, of the bottom end of the stretcher body 1; the sliding rod 31 is connected in the second sliding groove in a sliding mode, and a first return spring 35 is fixedly connected to the top end of the sliding rod 31 and the top end of the second sliding groove; the first support plate 34 is fixedly connected to the bottom end of the sliding rod 31; one end of the buffer column 32 is fixedly connected to the bottom end of the first support plate 34, and the other end is slidably connected in the sliding barrel 33; a buffer spring 36 is fixedly connected between the bottom end of the sliding barrel 33 and the bottom end of the buffer column 32; the sliding barrel 33 is fixedly connected to the top end of the second protective shell 4; the during operation, on lifting the stretcher body 1 with the patient, transfusion rod 2 can hang the bottle infusion, when needs medical supplies, open medical cabinet 13 and take, medical personnel's use has been made convenient, foam-rubber cushion 12 is then effectual the comfort level of stretcher body 1 has been improved, promote the in-process of stretcher body 1, stretcher body 1 atress extrudees reset spring 35 No. one, make slide bar 31 pressurized, make extension board 34 pressurized downstream, make bumping post 32 downstream, make bumping spring 36 atress, thereby avoided patient secondary wound on the way of the transportation, the effectual whole shock attenuation effect that improves the stretcher.

As an implementation manner of the present invention, a first sliding groove is formed in one side of the stretcher body 1 away from the U-shaped buckle 11, and the first sliding groove corresponds to the U-shaped buckle 11; the fixing assembly 111 comprises a clamping block 14, a contraction spring 15, a reel 16 and a trapezoidal block 17; the fixture block 14 is slidably connected in the first sliding groove, and the fixture block 14 is connected with the reel 16 through a safety belt 18; the top end of the fixture block 14 is provided with a third sliding groove, and the fixture block 14 is in a fork shape; the trapezoidal block 17 is connected in the No. four through groove in a sliding mode, and a No. five return spring 19 is fixedly connected to the bottom end of the trapezoidal block 17 and the bottom end of the No. three sliding groove; a square sliding groove is formed in the stretcher body 1 and is communicated with the first sliding groove, and the square sliding groove is perpendicular to the first sliding groove; the scroll 16 is rotationally connected to the inner wall of the square sliding chute; one end of the contraction spring 15 is fixedly connected with the scroll 16, and the other end of the contraction spring is fixedly connected with the bottom end of the square sliding chute; during operation, when the patient is lifted up the stretcher, pulling fixture block 14, make safety belt 18 take out, make spool 16 rotate, make retraction spring 15 tighten up, then extrude fixture block 14 both ends inwards, insert U type buckle 11 with fixture block 14 simultaneously, make fixture block 14 fixed by U type buckle 11, trapezoidal piece 17 plays limiting displacement, when the patient needs to seek medical advice, extrude fixture block 14 both ends inwards, make fixture block 14 break away from the buckle, make retraction spring 15 reset, make safety belt 18 reset, make fixture block 14 not excessively reset under trapezoidal piece 17's restriction, the effectual patient that has stabilized of fixed subassembly 111, secondary wound has been avoided.

As an embodiment of the present invention, the lifting assembly includes a compression motor 41, a first gear 42 and a square 43; a moving seat 44 is slidably connected in the second protective shell 4; the top end of the moving seat 44 is provided with a through hole, and the bottom end of the moving seat 44 is fixedly connected with a rotating wheel 45; the square 43 is fixedly connected to the top end inside the second protective shell 4, and the position of the square 43 corresponds to that of the through hole; a first rack 431 is fixedly connected to the bottom end of the square 43; a limiting block 432 is fixedly connected to one end of the first rack 431 far away from the square 43; the bottom end of the moving seat 44 is provided with a transmission assembly, and the transmission assembly corresponds to the position of the limiting block 432; the first gear 42 is in contact with the side wall of the bottom end of the first rack 431, and the first gear 42 is fixedly connected with the output end of the compression motor 41; the compression motor 41 is fixedly connected on the inner side wall of the movable seat 44; when the stretcher is in work and the height of the stretcher needs to be adjusted, the compression motor 41 is started, the first gear 42 is rotated, the first rack 431 moves up and down and is adjusted to a proper height, and the limiting block 432 prevents the stretcher body 1 from being excessively lifted, so that the work of medical personnel is reduced, and the rescue efficiency is improved.

As an embodiment of the present invention, the transmission assembly includes an air bag 461, a second support plate 462, a piston cylinder 463, a piston rod 464, and a first rotating shaft 465; the second support plate 462 is fixedly connected to the inner wall of the moving seat 44, and the second support plate 462 corresponds to the position of the limiting block 432; the air bag 461 is fixedly connected to the top end of the second support plate 462, and the air bag 461 is communicated with the piston cylinder 463 through a hose; the piston cylinder 463 is fixedly connected to the inner side wall of the bottom end of the movable base 44; the piston rod 464 is connected in the piston cylinder 463 in a sliding manner, and one end of the piston rod 464 is fixedly connected with the bottom end of the piston cylinder 463 with a second reset spring 469; a second rack 466 is fixedly connected to the other end of the piston rod 464; the second gear 467 is contacted with one end of the bottom end of the second rack 466 far away from the piston rod 464; the second gear 467 is fixedly connected with a first rotating shaft 465 through a winding roller 468; the first rotating shaft 465 is rotatably connected to the inner wall of the movable seat 44; the winding roller 468 is fixedly connected with a string; an auxiliary component is fixedly connected to one end of the thin rope, which is far away from the winding roller 468; during operation, when stopper 432 moves down, extrusion gasbag 461 for gasbag 461 compressed air makes compressed air pass through the hose and gets into piston cylinder 463, makes piston rod 464 outwards slide, makes No. two rack 466 slide, makes No. two gear 467 rotate, makes wind-up roll 468 rolling string, thereby starts auxiliary assembly.

As an embodiment of the present invention, a through groove is formed at a position of the bottom end of the movable seat 44 corresponding to the second gear 467; the auxiliary component comprises a square block 441, a first roller 442, a second roller 443, a first linkage 444 and a second linkage 445; the square block 441 is slidably connected in the through groove, the top end of the square block 441 is fixedly connected with the thin rope, and the bottom end of the square block 441 and the bottom end of the movable seat 44 are fixedly connected with a third reset spring 446; a first iron sheet and a second iron sheet are hinged to the side end of the square block 441; one end, far away from the square block 441, of the first iron sheet is hinged with a first roller 442; one end of the second iron sheet, which is far away from the square block 441, is hinged with a second roller 443; one end of the first linkage rod 444 is hinged with the first roller 442, and the other end of the first linkage rod is hinged with a second rotating shaft; one end of the second linkage rod 445 is hinged with the second roller 443, and the other end of the second linkage rod is hinged with a second rotating shaft; the second rotating shaft is rotatably connected to the inner wall of the through groove; during operation, the string upward movement for square piece 441 upwards slides in logical inslot, makes an iron sheet and No. two iron sheets open to the outside, because the restriction of No. two connecting rods of a connecting rod, makes the iron sheet can not excessively open, the effectual loss that reduces the iron sheet, thereby improved the life of iron sheet.

As an embodiment of the present invention, the first roller 442 and the second roller 443 are both slidably connected with a brake wheel assembly; the brake wheel assembly comprises a first support rod 47, a second support rod 48, a mounting block 49 and a brake pad 46; the first supporting rod 47 is connected with the first roller 442 in a sliding manner; the second strut 48 is slidably connected with the second roller 443; the first support rod 47 and the second support rod 48 are hinged in the moving seat 44, and mounting blocks 49 are arranged at the ends of the support rods far away from the roller; one end of the mounting block 49 is fixedly connected with a brake pad 46; during operation, because the motion of iron sheet for the gyro wheel slides on branch, makes the upper end atress of both ends branch outwards open, thereby makes branch lower extreme installation piece 49 move to runner 45, makes brake block 46 contact runner 45, thereby makes runner 45 stall, and the effectual stretcher that has stabilized is whole, makes the stable decline of stretcher, thereby has reduced medical personnel's work, better improvement rescue efficiency.

As an embodiment of the present invention, a fourth return spring 491 is fixedly connected to one end of the mounting block 49 away from the brake pad 46; a vertical plate 492 is fixedly connected to one end of the fourth return spring 491, which is far away from the mounting block 49; the vertical plate 492 is fixedly connected to the bottom end of the movable base 44; during operation, No. four reset spring 491 of branch lower extreme resets for the runner 45 is kept away from to installation piece 49, thereby makes runner 45 can rotate, the effectual position of stabilizing brake block 46, makes brake block 46 can used repeatedly, gives brake block 46's loss when having avoided runner 45 to rotate, the effectual life who increases brake block 46.

The working principle is as follows: when the stretcher is in work, a patient is lifted on the stretcher body 1, the infusion rod 2 can be used for bottle hanging infusion, when medical supplies are needed, the medical cabinet 13 is opened for taking, the use of medical staff is facilitated, the comfort level of the stretcher body 1 is effectively improved through the sponge cushion 12, in the process of pushing the stretcher body 1, the stretcher body 1 is stressed to extrude the first reset spring 35, the sliding rod 31 is stressed, the first support plate 34 is stressed to move downwards, the buffer column 32 moves downwards, the buffer spring 36 is stressed, secondary trauma of the patient in the transportation process is avoided, the overall damping effect of the stretcher bed is effectively improved, when the patient needs to be fixed, the clamping block 14 is pulled, the safety belt 18 is pulled out, then the two ends of the clamping block 14 are inwards extruded, the clamping block 14 is inserted into the U-shaped clamping buckle 11, the clamping block 14 is fixed through the U-shaped clamping buckle 11, the trapezoidal block 17 plays a limiting role, when the patient needs to take, the fixture block 14 is separated from the U-shaped buckle 11, so that the retraction spring 15 is reset, so that the safety belt 18 is reset, the fixing assembly 111 effectively stabilizes the patient, secondary trauma is avoided, when the height of the stretcher bed needs to be adjusted, the compression motor 41 is started, the first gear 42 rotates, the first rack 431 moves up and down and is adjusted to a proper height, the limiting block 432 prevents the stretcher body 1 from excessively rising, the work of medical workers is reduced, and the rescue efficiency is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (7)

1. A convenient-to-use stretcher bed for severe patients is characterized by comprising a stretcher body (1), a transfusion rod (2), a first protective shell (3), a second protective shell (4) and a damping mechanism; a group of U-shaped buckles (11) are arranged on the outer side wall of the stretcher body (1); a fixing component (111) is arranged on one side, away from the U-shaped buckle (11), of the stretcher body (1), and the fixing component (111) corresponds to the U-shaped buckle (11); a sponge cushion (12) is fixedly connected to the top end of the stretcher body (1), and a medical cabinet (13) is fixedly connected to the middle position of the bottom end of the stretcher body (1); the transfusion rod (2) is fixedly connected to the top end of the stretcher body (1), and the transfusion rod (2) penetrates through the sponge mat (12); the first protective shell (3) is fixedly connected to the bottom end of the stretcher body (1); the second protective shell (4) is connected in the first protective shell (3) in a sliding mode, and a lifting assembly is arranged in the second protective shell (4); the damping mechanism comprises a sliding rod (31), a buffering column (32), a sliding barrel (33) and a first support plate (34); a second sliding groove is formed in the position, corresponding to the first protective shell (3), of the bottom end of the stretcher body (1); the sliding rod (31) is connected in the second sliding groove in a sliding mode, and a first return spring (35) is fixedly connected to the top end of the sliding rod (31) and the top end of the second sliding groove; the first support plate (34) is fixedly connected to the bottom end of the sliding rod (31); one end of the buffer column (32) is fixedly connected to the bottom end of the first support plate (34), and the other end of the buffer column is connected in the sliding barrel (33) in a sliding mode; a buffer spring (36) is fixedly connected between the bottom end of the sliding barrel (33) and the bottom end of the buffer column (32); the sliding barrel (33) is fixedly connected to the top end of the second protective shell (4).

2. The convenient-to-use severe patient stretcher according to claim 1, wherein one side of the stretcher body (1) far away from the U-shaped buckle (11) is provided with a first sliding groove, and the first sliding groove corresponds to the U-shaped buckle (11); the fixing assembly (111) comprises a clamping block (14), a contraction spring (15), a reel (16) and a trapezoidal block (17); the clamping block (14) is connected in the first sliding groove in a sliding mode, and the clamping block (14) is connected with the reel (16) through a safety belt (18); the top end of the clamping block (14) is provided with a third sliding groove, and the clamping block (14) is in a fork shape; the trapezoidal block (17) is connected in the fourth through groove in a sliding mode, and a fifth reset spring (19) is fixedly connected to the bottom end of the trapezoidal block (17) and the bottom end of the third sliding groove; a square sliding groove is formed in the stretcher body (1), the square sliding groove is communicated with the first sliding groove, and the square sliding groove is perpendicular to the first sliding groove; the reel (16) is rotationally connected to the inner wall of the square sliding groove; one end of the contraction spring (15) is fixedly connected with the scroll (16), and the other end of the contraction spring is fixedly connected with the bottom end of the square sliding groove.

3. A convenient use critically ill patient cot as claimed in claim 1, wherein the lifting assembly comprises a compression motor (41), a first gear (42) and a block (43); a moving seat (44) is connected in the second protective shell (4) in a sliding manner; the top end of the movable seat (44) is provided with a through hole, and the bottom end of the movable seat (44) is fixedly connected with a rotating wheel (45); the square block (43) is fixedly connected to the top end of the interior of the second protective shell (4), and the position of the square block (43) corresponds to that of the through hole; a first rack (431) is fixedly connected to the bottom end of the square block (43); a limiting block (432) is fixedly connected to one end, away from the square block (43), of the first rack (431); the bottom end of the moving seat (44) is provided with a transmission assembly, and the transmission assembly corresponds to the position of the limiting block (432); the first gear (42) is in contact with the side wall of the bottom end of the first rack (431), and the first gear (42) is fixedly connected with the output end of the compression motor (41); the compression motor (41) is fixedly connected to the inner side wall of the moving seat (44).

4. A convenient use severe patient cot according to claim 3, wherein the drive assembly comprises a bladder (461), a second support plate (462), a piston cylinder (463), a piston rod (464), and a spindle (465); the second support plate (462) is fixedly connected to the inner wall of the moving seat (44), and the second support plate (462) corresponds to the limiting block (432); the air bag (461) is fixedly connected to the top end of the second support plate (462), and the air bag (461) is communicated with the piston cylinder (463) through a hose; the piston cylinder (463) is fixedly connected to the inner side wall of the bottom end of the movable seat (44); the piston rod (464) is connected in the piston cylinder (463) in a sliding manner, and one end of the piston rod (464) is fixedly connected with the bottom end of the piston cylinder (463) to form a second reset spring (469); the other end of the piston rod (464) is fixedly connected with a second rack (466); one end of the bottom end of the second rack (466), which is far away from the piston rod (464), is contacted with a second gear (467); the second gear (467) is fixedly connected with the first rotating shaft (465) through a winding roller (468); the first rotating shaft (465) is rotatably connected to the inner wall of the movable seat (44); the winding roller (468) is fixedly connected with a string; and one end of the string far away from the winding roller (468) is fixedly connected with an auxiliary component.

5. The convenient-to-use severe patient stretcher according to claim 4, wherein a through groove is formed at the bottom end of the moving seat (44) corresponding to the second gear (467); the auxiliary assembly comprises a square block (441), a first roller (442), a second roller (443), a first linkage rod (444) and a second linkage rod (445); the square block (441) is slidably connected in the through groove, the top end of the square block (441) is fixedly connected with the thin rope, and the bottom end of the square block (441) and the bottom end of the movable seat (44) are fixedly connected with a third reset spring (446); a first iron sheet and a second iron sheet are hinged to the side end of the square block (441); one end, far away from the square block (441), of the first iron sheet is hinged with a first roller (442); one end of the second iron sheet, which is far away from the square block (441), is hinged with a second roller (443); one end of the first linkage rod (444) is hinged with the first roller (442), and the other end of the first linkage rod is hinged with a second rotating shaft; one end of the second linkage rod (445) is hinged with the second roller (443), and the other end of the second linkage rod is hinged with the second rotating shaft; and the second rotating shaft is rotatably connected to the inner wall of the through groove.

6. A convenient critically ill patient stretcher as claimed in claim 5 wherein a brake wheel assembly is slidably attached to both the first roller (442) and the second roller (443); the brake wheel assembly comprises a first support rod (47), a second support rod (48), a mounting block (49) and a brake pad (46); the first support rod (47) is connected with the first roller (442) in a sliding manner; the second strut (48) is connected with the second roller (443) in a sliding manner; the first support rod (47) and the second support rod (48) are hinged in the moving seat (44), and mounting blocks (49) are arranged at the ends of the support rods, which are far away from the roller; one end of the mounting block (49) is fixedly connected with a brake pad (46).

7. The convenient-to-use stretcher for severe patients as claimed in claim 6, wherein a four-number return spring (491) is fixed to one end of the mounting block (49) far away from the brake pad (46); a vertical plate (492) is fixedly connected to one end, far away from the mounting block (49), of the fourth return spring (491); the vertical plate (492) is fixedly connected to the bottom end of the movable seat (44).

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