CN217366346U

CN217366346U - Combined backpack stretcher

Info

Publication number: CN217366346U
Application number: CN202221303161.4U
Authority: CN
Inventors: 王运斗; 宋振兴; 高树田; 温博伦
Original assignee: Institute of Medical Support Technology of Academy of System Engineering of Academy of Military Science
Current assignee: Institute of Medical Support Technology of Academy of System Engineering of Academy of Military Science
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-09-06
Anticipated expiration: 2032-05-27

Abstract

The utility model discloses a combination backpack stretcher, include: the combined back frame, the restraint device, the stretcher cloth and the back frame device; the outside of the combined back frame is sleeved with stretcher cloth, and the outside of the stretcher cloth is sleeved with a restraint device; the back carrying device is detachably connected with the second side of the combined back frame; the combination backpack stretcher is convertible between a seat mode and a stretcher mode. The utility model relates to a combined backpack stretcher, which can carry wounded in a lifting and back manner and meet the requirements of wounded transportation under complex terrains; the fixed structure is scientific and rigorous in design, and can be carried by at least one healthy operator.

Description

Combined backpack stretcher

Technical Field

The utility model belongs to the field of wounded and wounded carrying equipment, in particular to a combined backpack stretcher.

Background

When the person is injured, the wounded person needs to be transported to a related medical institution through a stretcher, and a motor-driven transportation tool is carried or carried in a short distance. However, the ordinary stretcher is greatly limited by geographical conditions, and especially, the existing stretcher is difficult to carry out effective wounded persons in the extreme geographical environments such as sealed cabins and narrow spaces in stairs, collapsed buildings, tunnels, ships and the like, and forests in plateaus and mountains.

SUMMERY OF THE UTILITY MODEL

The invention aims to solve the technical problem of providing a combined backpack stretcher.

The utility model provides a combination backpack stretcher, include:

the combined back frame, the restraint device, the stretcher cloth and the back frame device;

the outer side of the combined back frame is sleeved with stretcher cloth, and the restraint device is sleeved on the outer side of the stretcher cloth; the bearing device is detachably connected with the second side of the combined back frame;

the combined back frame comprises a first stretcher framework and a second stretcher framework; the first stretcher framework and the second stretcher framework are of tubular structures, the second end of the first stretcher framework is sleeved on the first end of the second stretcher framework, and the first end of the second stretcher framework can stretch out and draw back from the second end of the first stretcher framework;

the middle part of the first stretcher framework is connected with a first end shaft of the seat frame; the second end of the seat frame is connected with the first end shaft of the chair leg;

two sides of the second end of the second stretcher framework are respectively connected with the first end shafts of the two first folding mechanisms, and the second ends of the two first folding mechanisms are respectively connected with two side shafts of the second end of the seat frame;

the two sides of the second end of the first stretcher framework are respectively connected with the first end shafts of the two second folding mechanisms, and the second ends of the two second folding mechanisms are respectively connected with the middle shafts of the two sides of the chair legs;

when the first end of the second stretcher frame is contracted to the shortest in the second end of the first stretcher frame, the combined backpack stretcher is in a seat mode;

when the first end of the second stretcher frame is extended to the longest in the second end of the first stretcher frame, the combined backpack stretcher is in a stretcher mode.

Further, the combined back frame further comprises a locking mechanism;

the locking mechanism is of a rod type, and hooks are arranged at two ends of the locking mechanism;

first stretcher skeleton second end is provided with first horizontal pole, second stretcher skeleton second end is provided with the second horizontal pole, and when the first end of second stretcher skeleton was held in first stretcher skeleton second and is contracted to the shortest, locking mechanical system both ends couple can be hung respectively on first horizontal pole and second horizontal pole.

Further, the combined back frame also comprises a pedal;

the chair leg cross rod is arranged at the second end of the chair leg, the middle of the pedal is fixedly connected with the first end of the pedal connecting rod, and the second end of the pedal connecting rod is movably connected with the chair leg cross rod.

Furthermore, a caster is arranged on the second side of the combined back frame;

the truckles are installed on two sides of the first end of the second stretcher framework.

Furthermore, a support leg is arranged on the second side of the combined back frame;

the supporting legs are arranged on two sides of the first ends of the two first stretcher frameworks;

the first end of landing leg cup joints first stretcher skeleton first end.

Furthermore, the combined back frame also comprises a back device bracket;

a first bearing cross rod is arranged at the middle upper part of the first stretcher framework, and a second bearing cross rod is arranged at the middle lower part of the first stretcher framework;

two ends of the two bearing device supports are respectively and fixedly connected with the first bearing cross rod and the second bearing cross rod.

Further, the restraining device comprises a chest fixing belt, an abdomen fixing belt, a leg fixing belt and a head fixing belt;

the chest fixing belt, the abdomen fixing belt and the leg fixing belt all comprise woven belts, an adjusting buckle is arranged at the first end of each woven belt, and inserting buckles are further arranged at the two ends of each woven belt in a matched mode;

the head fixing band comprises a head fixing plate, a head restraint band and a head restraint position adjusting device;

head restraint position adjusting devices are arranged on two sides of the middle of the head fixing plate, and a plurality of adjusting holes are formed in the head restraint position adjusting devices;

the two ends of the head restraint strap are provided with restraint buckles in a matched mode, and the restraint buckles can penetrate through the adjusting holes;

the middle part of the head restraint strap is provided with a nylon fastener tape.

Furthermore, the backpack device comprises a foam pad, wherein the two sides of the first surface of the foam pad are provided with fastener tapes;

the two sides of the upper part of the foam pad are respectively fixedly connected with the first ends of the two shoulder straps,

the middle lower parts of the two shoulder straps are connected with a chest strap in a matching way, and the chest strap is provided with a buckle and a chest strap adjusting buckle;

the second end of the shoulder strap is fixedly connected with the first end of the gravity center adjusting strap, and the gravity center adjusting strap is provided with an adjusting strap adjusting buckle;

the second ends of the two gravity center adjusting belts are respectively fixedly connected with the bottoms of the two sides of the foam pad;

the second end of the two gravity center adjusting belts is connected with a waistband in a matching way, and the waistband is provided with an insert buckle and a waistband adjusting buckle.

The utility model relates to a combined backpack stretcher, which can carry wounded in a lifting and back manner and meet the requirements of wounded carrying under complex terrains; the fixed structure is scientific and rigorous in design, and can be carried by at least one healthy operator.

Drawings

Fig. 1 shows an overall schematic view of a combined backpack stretcher according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of a combined back frame seat mode of a combined backpack stretcher according to an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a combined back frame stretcher mode of the combined back carrying stretcher according to the embodiment of the invention;

fig. 4 shows a schematic view of a combined backpack stretcher head area stretcher cloth according to an embodiment of the present invention;

fig. 5 shows a schematic view of a combined hip region stretcher cloth and a leg region stretcher cloth of the backpack stretcher according to the embodiment of the present invention;

fig. 6 shows a schematic view of a combined backpack stretcher carrying device according to an embodiment of the present invention;

fig. 7 shows a schematic view of a chest, abdomen and leg securing straps of a combined backpack stretcher according to an embodiment of the present invention;

fig. 8 shows a schematic view of a head fixing belt of a combined backpack stretcher according to an embodiment of the present invention;

fig. 9 is a schematic view of an overall limiting connection assembly according to an embodiment of the present invention;

fig. 10 shows a rotation limiting effect diagram of the limiting connection assembly according to the embodiment of the present invention.

In the figure: 1. a combined back frame; 2. a restraint device; 3. a stretcher cloth; 4. a carrying device; 11. a first stretcher frame; 12. a backpack device support; 13. a seat frame; 141. a first folding mechanism; 142. a second folding mechanism; 15. a chair leg; 16. pedaling; 17. a locking mechanism; 18. a second stretcher frame; 191. a caster wheel; 192. a support leg; 21. inserting and buckling; 22. adjusting buckles; 23. weaving a belt; 24. a head restraint band; 25. a head restraint position adjustment device; 31. a head region stretcher cloth; 32. an aerial self-locking zipper; 35. the bottom is an aerial self-locking zipper; 41. a foam pad; 42. shoulder straps; 43. a chest strap; 44. a center of gravity adjusting belt; 45. a waistband; 51. a first connecting rod; 52. a connecting member; 53. a connecting circular pipe; 54. an outer limit piece; 61. a first cross bar; 62. a first inner limiting member; 63. and a second inner limiting part.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The utility model provides a combination backpack stretcher, as shown in figure 1, include: a combined back frame 1, a restraint device 2, a stretcher cloth 3 and a back carrying device 4; the combined backpack stretcher adopts the technical form of quick insertion combination and can be flexibly combined according to the requirement.

The combined back frame 1 is a main bearing part of the combined back-pack stretcher and mainly plays a role in supporting and connecting; the restraint device 2 can restrain the wounded and fix the wounded on the stretcher, the stretcher cloth 3 is a main body for directly bearing load transfer, is sleeved on the combined back frame 1 and is fixed by adopting a zipper mode; the carrying device 4 is used for carrying the stretcher on the back of the rescue personnel.

The outside of the combined back frame 1 is sleeved with a stretcher cloth 3, and the outside of the stretcher cloth 3 is sleeved with the restraint device 2; the bearing device 4 is detachably connected with the second side of the combined back frame 1;

the combined backpack stretcher is designed to be mainly used for carrying the sick and wounded in a lifting and back mode.

As shown in fig. 2 and fig. 3, fig. 2 is a schematic structural view of a seat mode of the combined back frame 1, and fig. 3 is a schematic structural view of a stretcher mode.

The combined back frame 1 comprises a first stretcher framework 11 and a second stretcher framework 18; the first stretcher framework 11 and the second stretcher framework 18 are of tubular structures, the second end of the first stretcher framework 11 is sleeved on the first end of the second stretcher framework 18, and the first end of the second stretcher framework 18 can stretch from the second end of the first stretcher framework 11 to the second stretcher framework 18; the two are connected into a telescopic rod structure.

The middle part of the first stretcher framework 11 is connected with a first end shaft of the seat frame 13; the seat frame 13 adopts a tubular structure and is mainly used for supporting the buttocks of the wounded in a single-person bearing working mode. The second end of the seat frame 13 is connected with the first end shaft of the chair leg 15; the seat legs 15 are of a tubular structure and support the seat frame 13 in a single-person-carrying mode (seat mode).

Two sides of the second end of the second stretcher frame 18 are respectively connected with the first end shafts of the two first folding mechanisms 141, and the second ends of the two first folding mechanisms 141 are respectively connected with two side shafts of the second end of the seat frame 13;

two sides of the second end of the first stretcher framework 11 are respectively connected with the first end shafts of the two second folding mechanisms 142, and the second ends of the two second folding mechanisms 142 are respectively connected with the middle shafts of two sides of the chair legs 15;

the folding mechanism is a connecting mechanism and is matched with the seat frame 13 and the chair legs 15 to realize switching under different working modes.

The combined back frame 1 further comprises a pedal 16; the pedals 16 adopt a tubular structure, so that the pedals can be used by wounded, the comfort of the wounded can be improved by the single carrying working mode, and the wounded can be prevented from sliding off the stretcher by the single dragging working mode.

The second ends of the chair legs 15 are provided with chair leg cross bars, the middle parts of the pedals 16 are fixedly connected with the first ends of the pedal connecting rods, and the second ends of the pedal connecting rods are movably connected with the chair leg cross bars. The second end of the pedal connecting rod is of a hollow round tube structure and is sleeved on the cross rod of the chair leg, and the pedal connecting rod and the cross rod can rotate concentrically. When in the stretcher mode, as shown in fig. 3, the pedal connecting rod rotates around the chair leg cross rod, and the pedals 16 are folded, so that the stretcher is more convenient to carry.

Furthermore, the pedal connecting rod and the chair leg cross rod are movably connected by using a limiting connecting assembly technology. The limiting connecting assembly can be connected with the cross rod and the straight rod, and the straight rod can rotate in a certain angle around the cross rod. As shown in fig. 9, the limiting connection assembly includes a first connection rod 51, a second end of the first connection rod 51 is fixedly provided with a connection member 52, and the second end of the first connection rod 51 is fixedly connected with a connection circular tube 53 through the connection member 52; an outer limiting member 54 is fixedly connected to the outer side of the connecting circular tube 53. The limiting connecting assembly further comprises a first cross rod 61, the connecting circular tube 53 is sleeved on the outer side of the first cross rod 61, and the connecting circular tube 53 and the first cross rod 61 can concentrically rotate; preferably, the contact surface between the circular connecting tube 53 and the first cross bar 61 is rough, and if rubber is disposed on the contact surface, the circular connecting tube 53 and the first cross bar 61 cannot rotate freely, and can only rotate after a certain force is applied. A first inner limiting member 62 and a second inner limiting member 63 are arranged outside the first cross bar 61. When the first connecting rod 51 rotates around the first cross rod 61, the outer limiting member 54 contacts with the first inner limiting member 62 or the second inner limiting member 63, so as to limit the rotation. When the outer limiting part 54 is located between the first inner limiting part 62 and the second inner limiting part 63, the first cross bar 61 can rotate freely relative to the connecting circular tube 53; when the outer limiting member 54 abuts against the first inner limiting member 62 or the second inner limiting member 63, the first connecting rod 51 cannot rotate in a direction away from the first inner limiting member 62 or the second inner limiting member 63. The specific positions of the first inner limiting member 62 and the second inner limiting member 63 determine the rotation angle of the first connecting rod 51. The motion path of the outer limiting member 54 between the first inner limiting member 62 and the second inner limiting member 63 is an arc, and the arc radian thereof is the rotation angle of the first connecting rod 51. If the radian of the motion track is pi/2, the rotation angle of the first connecting rod 51 is 90 degrees. By adjusting the specific positions of the first inner limiting member 62 and the second inner limiting member 63, the rotation angle of the first connecting rod 51 relative to the first cross rod 61 can be set.

Fig. 10 shows the effect of the outer limiting member 54 abutting against the first inner limiting member 62, in which the first connecting rod 51 cannot rotate upward but only rotates downward.

The second side of the combined back frame 1 is also provided with a caster 191;

the caster wheels 191 are installed at both sides of the first end of the second stretcher frame 18. When the stretcher mode is adopted, the rescue personnel can crawl by a single person, and the stretcher is more convenient to drag by using the caster 191; when the seat mode is adopted, a single person can incline and combine the backpack stretcher, and the backpack stretcher is pulled like a double-wheel trolley.

The second side of the combined back frame 1 is also provided with a supporting leg 192;

the supporting legs 192 are installed on two sides of the first ends of the two first stretcher frames 11; the legs 192 are primarily used to support the stretcher and provide sufficient hand space for the rescuer to operate. The support legs 192 can be retracted towards the inside of the stretcher to avoid colliding with the head of the rescue worker. Preferably, the first end of the supporting leg 192 is a hollow circular tube structure, and the first end of the supporting leg 192 is sleeved on the straight rods on the two sides of the first end of the first stretcher frame 11 and can concentrically rotate. Further, the leg 192 is movably connected to the straight rod by using a limit connection assembly technology, and the leg 192 can only rotate a quarter of a circle, namely 90 degrees.

The combined back frame 1 also comprises a back device bracket 12; the carrier support 12 is of a tubular construction and is mainly used for supporting and connecting the carrier 4.

A first bearing cross rod is arranged at the middle upper part of the first stretcher framework 11, and a second bearing cross rod is arranged at the middle lower part of the first stretcher framework;

two ends of the two bearing device brackets 12 are respectively fixedly connected with the first bearing cross rod and the second bearing cross rod.

The combined back frame 1 further comprises a locking mechanism 17; the locking mechanism 17 is mainly used in a single-person carrying mode to lock the combined back frame 1, so that the stretcher can still be kept in the single-person carrying mode (seat mode) after being loaded.

The locking mechanism 17 is a rod, preferably a flat long thin rod, which has flexibility and avoids breaking caused by too high rigidity. Both ends are provided with hooks; the hook has elasticity.

First stretcher skeleton 11 second end is provided with first horizontal pole, second stretcher skeleton 18 second end is provided with the second horizontal pole, and when the first end of second stretcher skeleton 18 contracts to the shortest in first stretcher skeleton 11 second end, locking mechanical system 17 both ends couple can be hung respectively on first horizontal pole and second horizontal pole, and at this moment under locking mechanical system 17 effect, first horizontal pole and the unable displacement of second horizontal pole, the unable outside extension of the first end of second stretcher skeleton 18.

The combination backpack stretcher is switched between the seat mode and the stretcher mode using:

transition from seat mode to stretcher mode:

when the first end of the second stretcher frame 18 is retracted to the shortest in the second end of the first stretcher frame 11, the combined backpack stretcher is in a seat mode;

11) the legs 192 are flared outwardly;

12) removing the locking mechanism 17;

13) pulling the second cross bar towards the second end of the second stretcher frame 18 to extend the first end of the second stretcher frame 18, driving the two first folding mechanisms 141 and the seat frame 13 to rotate towards the stretcher direction, moving the chair legs 15 towards the second end of the second stretcher frame 18, and rotating the two second folding mechanisms 142 towards the stretcher direction; finally, the first folding mechanism 141, the second folding mechanism 142, the seat frame 13 and the chair legs 15 are basically parallel to the first stretcher framework 11;

14) the pedals 16 are rotated to be folded in the combined backpack stretcher;

at this time, the first end of the second litter frame 18 is extended to the longest within the second end of the first litter frame 11, and the combination backpack litter is in the litter mode.

Steps 11), 12), 13) and 14) are reference steps, and an operator can perform the steps according to own habits, such as 12) then 11) then 14) then 13) or the like.

Transition from stretcher mode to seat mode:

21) the pedals 16 are rotated to be unfolded outside the combined backpack stretcher;

22) the second cross bar is pushed towards the first end of the second stretcher framework 18, so that the first end of the second stretcher framework 18 is shortened, the two first folding mechanisms 141 and the seat frame 13 are driven at the same time, the junction of the two first folding mechanisms 141 and the seat frame 13 moves towards the direction far away from the stretcher, the second ends of the two second folding mechanisms 142 and the chair legs 15 move towards the direction far away from the stretcher, and finally the first end of the second stretcher framework 18 is shortened to the shortest;

23) mounting a locking mechanism 17;

24) the legs 192 converge inwardly;

steps 21), 22), 23), 24) are reference steps.

The combined backpack stretcher further comprises a dragging belt, the dragging belt is an auxiliary spare part for a single dragging gesture, the use is flexible, one end of the dragging belt can be tied on the stretcher, the other end of the dragging belt is placed on the shoulder of a dragging person, and the dragging efficiency is improved. The dragging belt can be a common belt and can also be designed in relation to CN 213910912U.

In this application, the stretcher cloth 3 is sleeved outside the combined back frame 1. The stretcher cloth 3 in the present application is divided into a head area stretcher cloth, a hip area stretcher cloth and a leg area stretcher cloth, and fig. 4 is an effect view of the head area stretcher cloth 31.

A head cross rod is arranged at the first end of the first stretcher framework 11, and the first end of the stretcher cloth 31 in the head area is sleeved on the head cross rod; the two sides of the first stretcher frame 11 are respectively provided with a first stretcher frame straight rod, and the middle part of the stretcher cloth 31 in the head area is sleeved on the first stretcher frame straight rods on the two sides; the second end of the head area stretcher cloth 31 is sleeved on the second bearing cross rod, the head area stretcher cloth 31 is further provided with a plurality of aviation self-locking zippers 32, and after the head area stretcher cloth 31 is sleeved on the second bearing cross rod, the head area stretcher cloth 31 is fixed at a corresponding position through the aviation self-locking zippers 32. The aviation self-locking zipper 32 adopts a high-strength 9 mm self-locking aviation zipper, and the horizontal pulling strength (transverse tensile strength) is not less than 400N/10 mm.

A partial space is provided in the middle of the head region stretcher 31, so that the backpack support 12 is not completely enclosed in the head region stretcher 31. Preferably, a gap is provided in the middle of the head region stretcher cloth 31, and the carrier frame 12 can be exposed from the gap after the head region stretcher cloth 31 is fitted on the outside of the pack frame 1.

The hip region stretcher cloth and the leg region stretcher cloth are of square structures as shown in fig. 5, and the middle part is provided with an aviation self-locking zipper. When the chair is installed, the chair is also sleeved on the corresponding position (the seat frame 13 and the chair legs 15) and is fixed by using an aviation self-locking zipper.

The restraint device 2 comprises a chest fixing belt, an abdomen fixing belt, a leg fixing belt and a head fixing belt;

the chest fixing strap, the abdomen fixing strap and the leg fixing strap are all shown in fig. 7 and comprise a mesh belt 23, wherein a first end of the mesh belt 23 is provided with an adjusting buckle 22, and two ends of the mesh belt 23 are also provided with inserting buckles 21 in a matching manner; the eye-splice can realize the quick restraint of fixed band and release, and adjustable fixed band length is detained in the regulation, adapts to the wounded of weight. In the present application, the adjusting buckle and the insert buckle are both in the prior art, such as the 07-type woven outer waistband. When the wounded is on the stretcher, the wounded is tied at the corresponding position by using a fixing belt.

As shown in fig. 8, the head fixing band can restrain the head of the wounded, and can reduce the probability of secondary neck injury during the transportation process of the wounded, and comprises a head fixing plate, a head restraint band 24 and a head restraint position adjusting device 25;

head restraint position adjusting devices 25 are arranged on two sides of the middle of the head fixing plate, and the head restraint position adjusting devices 25 are provided with a plurality of adjusting holes; the position of the head restraint strap 24 can be adjusted according to the height of the injured person. Preferably, the head restraint position adjusting means 25 are provided on both sides of the first end of the head region stretcher 31 in the middle.

Two ends of the head restraint strap 24 are provided with restraint buckles in a matched manner, and the restraint buckles can penetrate through the adjusting holes and are buckled on the adjusting holes in a matched manner;

the middle of the head restraint strap 24 is provided with a velcro tape, the head restraint strap 24 is connected through the velcro tape, the length can be adjusted according to the head size of the wounded, and the head can be reliably fixed.

As shown in fig. 6, the backpack 4 includes a foam pad 41, and two sides of a first surface of the foam pad 41 are provided with fastener tapes; when the back frame is installed, the first surface of the foam pad 41 is close to the back frame 1, and the second surface of the foam pad 41 is far away from the back frame 1. The foam pad 41 is mainly used for relieving back oppression of rescue workers, avoiding back damage of the rescue workers and improving bearing comfort, and the foam pad 41 is fixed on the bearing device support 12 of the combined bearing stretcher through the buckling belt. Preferably, the backpack device bracket 12 is provided with a hook and loop fastener, and the foam pad 41 is adhered to the hook and loop fastener by means of a hook and loop fastener. Furthermore, a magic tape is also disposed at the contact position of the head region stretcher cloth 31 and the foam pad 41. The foam pad 41 is provided with a support (e.g., a support plate) inside, which can withstand a sufficient tensile force.

The two sides of the upper part of the second surface of the foam pad 41 are respectively fixedly connected with the first ends of the two shoulder straps 42,

the middle lower parts of the two shoulder straps 42 are connected with a chest strap 43 in a matching way, and the chest strap 43 is provided with a buckle and a chest strap adjusting buckle; the chest strap 43 is mainly used for preventing the shoulder strap 42 from sliding towards the outer sides of the two shoulders of the rescue worker, so that the bearing efficiency is improved, the fatigue is relieved, the bearing time is prolonged (the rest time is reduced), and the rescue efficiency is further improved. The chest strap 43 is provided with a buckle which can be fixed and released quickly; the chest belt 43 is provided with an adjusting buckle which can adjust the length of the chest belt and adapt to rescue workers in different carrying positions.

The second end of the shoulder strap 42 is fixedly connected with the first end of the gravity center adjusting strap 44, and the gravity center adjusting strap 44 is provided with an adjusting strap adjusting buckle; the gravity center adjusting belt 44 can adjust the gravity center position of the stretcher, so that rescue workers can conveniently find the proper carrying posture.

The second ends of the two gravity center adjusting belts 44 are respectively fixedly connected with the bottoms of the two sides of the foam pad 41;

the second ends of the two gravity center adjusting belts 44 are connected with a waist belt 45 in a matching way, and the waist belt 45 is provided with a plug-in buckle and a waist belt adjusting buckle. The belt 44 is mainly used for preventing the stretcher from fluctuating and oscillating on the back of the rescuers, so as to avoid accelerated fatigue, prolong the bearing time (reduce the rest time) and further improve the rescue efficiency.

The combined backpack stretcher further comprises two crotch straps, as shown in fig. 6, each crotch strap comprises a mesh belt 23, a first end of each mesh belt 23 is provided with an adjusting buckle 22, and two ends of each mesh belt 23 are also provided with inserting buckles 21 in a matching manner. The crotch strap is more flexible to use, can be used as the crotch strap when in a dragging posture, and is tied on a cross beam in the middle of the stretcher or the stretcher (the crotch of the wounded is fixed); can be used as a leg strap in a sitting posture to tie the legs of the wounded with the legs of the stretcher.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A combined backpack stretcher is characterized in that the combined backpack stretcher comprises a combined back frame (1), a restraint device (2), stretcher cloth (3) and a backpack device (4);

the outer side of the combined back frame (1) is sleeved with a stretcher cloth (3), and the outer side of the stretcher cloth (3) is sleeved with the restraint device (2); the bearing device (4) is detachably connected with the second side of the combined back frame (1);

the combined back frame (1) comprises a first stretcher framework (11) and a second stretcher framework (18); the first stretcher framework (11) and the second stretcher framework (18) are of tubular structures, the second end of the first stretcher framework (11) is sleeved on the first end of the second stretcher framework (18), and the first end of the second stretcher framework (18) can stretch out and draw back from the second end of the first stretcher framework (11);

the middle part of the first stretcher framework (11) is connected with a first end shaft of the seat frame (13); the second end of the seat frame (13) is connected with the first end shaft of the chair leg (15);

two sides of the second end of the second stretcher framework (18) are respectively connected with first end shafts of the two first folding mechanisms (141), and second ends of the two first folding mechanisms (141) are respectively connected with two side shafts of the second end of the seat frame (13);

two sides of the second end of the first stretcher framework (11) are respectively connected with first end shafts of two second folding mechanisms (142), and second ends of the two second folding mechanisms (142) are respectively connected with middle shafts of two sides of the chair legs (15);

when the first end of the second stretcher framework (18) is retracted to the shortest in the second end of the first stretcher framework (11), the combined backpack stretcher is in a chair mode;

when the first end of the second stretcher frame (18) extends to the longest in the second end of the first stretcher frame (11), the combined backpack stretcher is in a stretcher mode.

2. The combination backpack stretcher of claim 1,

the combined back frame (1) further comprises a locking mechanism (17);

the locking mechanism (17) is of a rod type, and hooks are arranged at two ends of the locking mechanism;

first stretcher skeleton (11) second end is provided with first horizontal pole, second stretcher skeleton (18) second end is provided with the second horizontal pole, and when first end of second stretcher skeleton (18) was held in first stretcher skeleton (11) second and is contracted to the shortest, locking mechanical system (17) both ends couple can be hung respectively on first horizontal pole and second horizontal pole.

3. The combination backpack stretcher of claim 2,

the combined back frame (1) also comprises a pedal (16);

the second ends of the chair legs (15) are provided with chair leg cross rods, the middle parts of the pedals (16) are fixedly connected with the first ends of the pedal connecting rods, and the second ends of the pedal connecting rods are movably connected with the chair leg cross rods.

4. The combination backpack stretcher of claim 3,

the second side of the combined back frame (1) is also provided with a caster (191);

the caster wheels (191) are arranged on two sides of the first end of the second stretcher framework (18).

5. The combination backpack stretcher of claim 4,

the second side of the combined back frame (1) is also provided with a supporting leg (192);

the supporting legs (192) are arranged on two sides of the first ends of the two first stretcher frameworks (11);

the first end of the supporting leg (192) is sleeved at the first end of the first stretcher framework (11).

6. The combination backpack stretcher of claim 5,

the combined back frame (1) also comprises a back device bracket (12);

a first bearing cross rod is arranged at the middle upper part of the first stretcher framework (11), and a second bearing cross rod is arranged at the middle lower part of the first stretcher framework;

two ends of the two bearing device brackets (12) are respectively and fixedly connected with the first bearing cross rod and the second bearing cross rod.

7. The combination backpack stretcher of claim 6,

the restraint device (2) comprises a chest fixing belt, an abdomen fixing belt, a leg fixing belt and a head fixing belt;

the chest fixing belt, the abdomen fixing belt and the leg fixing belt all comprise woven belts (23), an adjusting buckle (22) is arranged at the first end of each woven belt (23), and inserting buckles (21) are further arranged at the two ends of each woven belt (23) in a matched mode;

the head fixing band comprises a head fixing plate, a head restraint band (24) and a head restraint position adjusting device (25);

head restraint position adjusting devices (25) are arranged on two sides of the middle of the head fixing plate, and a plurality of adjusting holes are formed in the head restraint position adjusting devices (25);

two ends of the head restraint strap (24) are provided with restraint buckles in a matched mode, and the restraint buckles can penetrate through the adjusting holes;

the middle part of the head restraint strap (24) is provided with a nylon fastener tape.

8. The combination backpack stretcher of claim 7,

the backpack device (4) comprises a foam pad (41), and two sides of the first surface of the foam pad (41) are provided with fastener tapes;

the two sides of the upper part of the foam pad (41) are respectively fixedly connected with the first ends of the two shoulder straps (42),

the middle lower parts of the two shoulder straps (42) are connected with a chest strap (43) in a matching way, and the chest strap (43) is provided with a buckle and a chest strap adjusting buckle;

the second end of the shoulder strap (42) is fixedly connected with the first end of the gravity center adjusting strap (44), and the gravity center adjusting strap (44) is provided with an adjusting strap adjusting buckle;

the second ends of the two gravity center adjusting belts (44) are respectively fixedly connected with the bottoms of the two sides of the foam pad (41);

the second ends of the two gravity center adjusting belts (44) are connected with a waist belt (45) in a matching manner, and the waist belt (45) is provided with an insert buckle and a waist belt adjusting buckle.