CN211705062U

CN211705062U - Light helicopter stretcher capable of being folded in multiple directions

Info

Publication number: CN211705062U
Application number: CN201921986689.4U
Authority: CN
Inventors: 郗文; 王夫帅; 李俊杰; 薛萌萌; 马武明; 贺振; 周海波; 侯烨琦
Original assignee: AVIC Aerospace Life Support Industries Ltd
Current assignee: AVIC Aerospace Life Support Industries Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-10-20
Anticipated expiration: 2029-11-15

Abstract

The application provides a light helicopter stretcher capable of being folded in multiple directions, wherein a stretcher rod component (6) comprises an upper rod (6-1), a lower rod (6-2), a butt joint (6-3)), and an H joint (6-4), wherein the butt joint is respectively arranged at one end of the upper rod (6-1) and one end of the lower rod (6-2), and the H joint connects the upper rod and the lower rod at the butt joint, so that the upper rod and the lower rod can be folded relatively; two folding assemblies (4) are arranged in parallel relatively at the vertical position of the stretcher bar assembly, each folding assembly (4) comprises a U-shaped part (4-1), a bent bar (4-2) and two joints (4-3), one end of each bent bar (4-2) is provided with the joint (4-3) to be connected with the stretcher bar, the other end of each bent bar is a free end, the two free ends are connected through the U-shaped parts (4-1), and the two bent bars (4-2) can move towards the opening of the U-shaped part (4-1) relatively to realize folding. The foldable chair can be folded in multiple directions, and is light in weight and convenient to use.

Description

Light helicopter stretcher capable of being folded in multiple directions

Technical Field

The application relates to the technical field of aviation stretchers, in particular to a light helicopter stretcher capable of being folded in multiple directions.

Background

One of the tools that the helicopter is used for transporting the sick and wounded is the stretcher, because the space of helicopter is generally less, and the load is little, the stretcher that needs requires simple structure, light in weight, the stretcher can be folded up, facilitates the use, the stretcher can expand the use outside the cabin and can realize alone transporting the function near sick and wounded to the aircraft. The invention aims at the requirements to design a stretcher which is simple in structure, can be quickly installed and detached, and can be quickly folded and unfolded, so that the wounded and the sick can be quickly transported.

SUMMERY OF THE UTILITY MODEL

Technical objects of the present application: in order to solve the problem that the rescue helicopter can arrange a stretcher along the course, the stretcher can effectively restrain a patient, and the stretcher can be folded in multiple directions, so that the weight is light, and the use is convenient.

The technical scheme is as follows: a light helicopter stretcher capable of being folded in multiple directions comprises two stretcher rod assemblies, a folding assembly and a stretcher cloth assembly, wherein the two stretcher rod assemblies are arranged in parallel relatively and comprise an upper rod, a lower rod, a butt joint and an H joint, the butt joints are respectively arranged at one end heads of the upper rod and the lower rod, the H joint connects the upper rod and the lower rod at the butt joint so that the upper rod and the lower rod can be folded relatively, and a B positioning bead and a sliding sleeve for fixing the B positioning bead are further arranged at the joint of the two butt joints; two folding assemblies are arranged in parallel relatively at the vertical position of the stretcher bar assembly, each folding assembly comprises a U-shaped piece, two bent bars and joints, one ends of the two bent bars are provided with the joints to be connected with the stretcher bar, the other ends of the two bent bars are free ends, the two free ends are connected by the U-shaped pieces, and the two bent bars can move relatively towards the openings of the U-shaped pieces to realize folding; a supporting leg assembly for providing supporting force for the stretcher is arranged below the joint; the stretcher cloth component is designed according to the load-bearing distribution of a human body and comprises main cloth, a head fixing band, a trunk fixing band, a crotch band, pedals and a limiting ring, and the stretcher cloth and the stretcher rod are fixed together through screws and nuts.

Furthermore, a second wedge-shaped surface and a third wedge-shaped surface which are in surface contact with the joint surfaces and limit the bent rod are arranged in the U-shaped part.

Furthermore, the lower part of the joint is provided with a convex structure for limiting the supporting leg assembly.

Furthermore, the other side of the lower part of the joint is provided with a first wedge-shaped surface which is used for limiting the bent rod and is in surface-to-surface contact with the bent rod.

Further, the joint lower part also comprises an A positioning bead.

Furthermore, a spherical handle is arranged at the other end of the upper rod.

Furthermore, the other end of the lower rod also comprises a roller, and the roller is connected with the lower rod through a roller joint.

Furthermore, the stretcher also comprises shoulder belts, wherein the shoulder belts are polyester belts, one ends of the shoulder belts are fixed on the two upper stretcher bars, the other ends of the shoulder belts are free ends, the free ends are connected with the length-adjustable Chinese character 'ri' buckles, and the shoulder belts can be fastened and fixed by nylon hasps after being folded.

Furthermore, the stretcher cloth component comprises main cloth, a head fixing belt, a trunk fixing belt, a crotch belt, pedals and a limiting ring, wherein the head fixing belt and the trunk fixing belt are fixed and unfastened by sewing buckles on the cloth surface, and the crotch belt is provided with a thigh sewing insert buckle for fixing; the length of the pedal is adjusted to adapt to people with different heights by sewing the Chinese character 'ri' buckles; the stretcher cloth is mainly sewn through canvas silk cloth, polyester silk belts, inserting ports, Chinese character buttons and buckling belts, and the polyester silk belts are arranged at a plurality of positions on the cloth surface according to the weight of the human body; a limiting ring for limiting the shoulder belt.

Furthermore, the safety belt has two points, and the end connecting piece round hole is fixed with the stretcher bar through a screw and a nut; the winch hanging belt is formed by sewing a polyester fiber belt and is fixed by sharing a screw, a nut and a gasket with the safety belt.

The application has the following beneficial technical effects:

the stretcher has the advantages of simple structure, light weight and quick operation, and can realize the transportation of the sick and wounded by one person.

Drawings

FIG. 1 is a schematic view of the present application in use on a nacelle.

Wherein: 1-1 front support piece and 2-2 rear support piece

Fig. 2 is a schematic view of a stretcher of the present application.

Fig. 3 is a schematic view of a folding assembly in the present application.

Wherein: 3-1U-shaped part, 3-2 bent rod, 3-3 joint, 3-4 positioning bead and 3-5 supporting leg assembly

Fig. 4 is an enlarged view of a portion a of fig. 3 of the present application.

FIG. 5 is a schematic view of a support leg assembly configuration in accordance with the present application.

Wherein: 5-1 landing leg joint, 5-2 landing legs and 5-3 landing leg foot margin

Fig. 6 is a schematic structural view of the litter assembly of the present application.

Wherein: 6-1 upper rod, 6-2 lower rod, 6-3 butt joint, 6-4H joint, 6-5 spherical joint, 6-6 roller joint, 6-7 roller, 6-8 retaining ring, 6-9 positioning bead and 6-10 sliding sleeve.

Fig. 7 is a schematic structural view of the stretcher cloth of the present application.

Wherein: 7-1 head fixing strap, 7-2 trunk fixing strap, 7-3 crotch strap, 7-4 pedal, 7-5 main cloth, 7-6 spacing ring, 7-7 polyester ribbon

Fig. 8 is a schematic view of the inventive stretcher tab.

Wherein: 8-1 eye-splice, 8-2 Chinese character 'ri' fastener, 8-3 fastener suede and 8-4 fastener hook surface

Fig. 9 is a schematic view of the structure of the stretcher bar joint of the present application.

Wherein: wedge-shaped surfaces on 9-1 convex structure, 9-2 wedge-shaped surface I and 9-3 convex structure

Fig. 10 is a schematic structural view of a U-shaped member of the present application.

Wherein: 10-1 wedge surface II and 10-2 wedge surface III

Fig. 11 is a schematic view of the folding of the stretcher bar of the present application.

Fig. 12 is a schematic view of the folded stretcher frame of the present application.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The helicopter is installed in a helicopter along the course.

Example one

A light helicopter stretcher capable of being folded in multiple directions comprises stretcher bar assemblies 6, folding assemblies 4 and a stretcher cloth assembly 7, and is characterized in that the stretcher bar assemblies 6 are two and are arranged in parallel, the stretcher bar assemblies 6 comprise upper bars 6-1, lower bars 6-2, butt joints 6-3 and H joints 6-4, the butt joints 6-3 are respectively arranged at one end ends of the upper bars 6-1 and the lower bars 6-2, the H joints 6-4 connect the upper bars 6-1 and the lower bars 6-2 at the butt joints 6-3, so that the upper bars 6-1 and the lower bars 6-2 can be folded in a relative mode, and B positioning beads 6-9 and sliding sleeves 6-10 for fixing the positioning beads are further arranged at the joints 6-3 of the two butt joints; two folding assemblies 4 are arranged in parallel relatively at the vertical position of the stretcher bar assembly, each folding assembly 4 comprises a U-shaped part 4-1, two bent bars 4-2 and two joints 4-3, one end of each bent bar 4-2 is provided with the joint 4-3 to be connected with the stretcher bar, the other end of each bent bar 4-3 is a free end, the two free ends are connected by the U-shaped parts 4-1, and the two bent bars 4-2 can move relatively towards the opening of the U-shaped part 4-1 to realize folding; a supporting leg assembly 5 for providing supporting force for the stretcher is arranged below the joint 4-3; the stretcher cloth component is designed according to the load-bearing distribution of a human body and comprises 7-5 parts of main cloth, 7-1 parts of head fixing belts, 7-2 parts of trunk fixing belts, 7-3 parts of crotch belts, 7-4 parts of pedals and 7-6 parts of limiting rings, and the stretcher cloth and the stretcher rod are fixed together through screws and nuts.

A second wedge-shaped surface 10-1 and a third wedge-shaped surface 10-2 which are in surface-to-surface contact with the joint 4-3 and limit the bent rod are arranged in the U-shaped part 4-1.

The lower part of the joint 4-3 is provided with a convex structure 9-1 for limiting the supporting leg assembly.

The other side of the lower part of the joint 4-3 is provided with a wedge-shaped surface I9-2 which limits the bent rod 4-2 and is in surface-to-surface contact.

The lower part of the joint 4-3 also comprises an A positioning bead 4-4.

The other end of the upper rod 6-1 is provided with a spherical handle 6-5.

The other end of the lower rod 6-2 also comprises a roller 6-7, and the roller 6-7 is connected with the lower rod 6-2 by a roller joint 6-6.

The stretcher also comprises shoulder belts, wherein the shoulder belts are polyester silk belts, one ends of the shoulder belts are fixed on the two stretcher bars, the other ends of the shoulder belts are free ends, the free ends are connected with the Y-shaped buckles with adjustable lengths, and the shoulder belts can be tightly bound and fixed by nylon hasps after being folded.

The stretcher cloth component 7 comprises main cloth 7-5, a head fixing belt 7-1, a trunk fixing belt 7-2, a crotch belt 7-3, pedals 7-4 and a limiting ring 7-6, wherein the head fixing belt 7-1 and the trunk fixing belt 7-2 are fixed and unfastened through sewing buckles on cloth surfaces, and the crotch belt 7-3 is provided with a thigh sewing insert buckle for fixing; the length of the pedal is adjusted to adapt to people with different heights by sewing the Chinese character 'ri' buckles; the stretcher cloth is mainly sewn through canvas silk cloth, polyester silk belts 7-7, inserting ports, Chinese character 'ri' buckles and buckling belts, the polyester silk belts are arranged at a plurality of positions on the cloth surface according to the weight of the human body; a limiting ring 7-6 for limiting the shoulder belt.

The safety belt is a two-point safety belt, and the circular hole of the end connecting sheet is fixed with the stretcher bar through a screw and a nut; the winch hanging belt is formed by sewing a polyester fiber belt and is fixed by sharing a screw, a nut and a gasket with the safety belt.

Example two

The folding assembly consists of a U-shaped piece 4-1, a bent rod 4-2, a joint 4-3, an A positioning bead 4-4 and a leg assembly 4-5, and the folding assembly needs to cross over a dead point position after being unfolded and forms a triangle with a connecting line between the two joints.

The U-shaped part 4-1 is characterized by comprising a wedge-shaped surface II 10-1 and a wedge-shaped surface III 10-2, wherein the wedge-shaped structures are used for limiting the bent rod to ensure that the bent rod is in surface-to-surface contact with the bent rod, and the bent rod is not easy to wear.

The connector 4-3 is characterized by comprising a convex structure 9-1 and a wedge-shaped surface I9-2 structure, wherein the convex structure is used for limiting the landing leg assembly and is also provided with a wedge-shaped structure II (9-3) to ensure that the landing leg connector (5-1) after the landing leg assembly is unfolded is not easy to wear due to surface-to-surface contact with the landing leg connector, and the wedge-shaped structure I is used for limiting the bent rod 4-2 to ensure that the landing leg connector and the bent rod are in surface-to-surface contact and are not easy to wear.

The A positioning beads 4-4 are used for increasing the friction force of the supporting leg assembly and preventing the supporting leg from rebounding after being opened.

The supporting leg assembly consists of a supporting leg joint 5-1, a supporting leg pipe 5-2 and a supporting leg base 5-3.

The stretcher bar component consists of an upper bar 6-1, a lower bar 6-2, a butt joint 6-3, an H joint 6-4, a spherical handle 6-5, a roller joint 6-6, a roller 6-7, a baffle ring 6-8, a positioning bead B6-9 and a sliding sleeve 6-10.

The B positioning beads are used for increasing the friction force of the sliding sleeve and preventing the sliding sleeve from automatically sliding out of the H joint.

The shoulder strap is composed of a polyester silk strap, a nylon hasp strap and a Chinese character 'ri' buckle 8-2, the length of the free end of the shoulder strap can be adjusted through the Chinese character 'ri' buckle 8-2, the shoulder strap can be fastened and fixed through the nylon hasp after being folded, and the shoulder strap is used for assisting a rescuer to use the stretcher more conveniently.

The safety belt has two points, and the circular hole of the end connecting sheet is fixed with the stretcher bar through a screw and a nut and is used for restraining the upper trunk and the lower trunk of the sick and wounded.

The clip fixes the stretcher cloth component 7 and the stretcher bar component 6 together through a screw and a nut.

The winch hanging belt is formed by sewing a polyester fiber belt and is fixed by sharing a screw, a nut and a gasket with the safety belt. The winch hanging belt is used for providing a hanging point, and is convenient for a winch on an airplane to hoist and transport the stretcher.

The stretcher is provided with a main cloth 7-5, a head fixing belt 7-1, a trunk fixing belt 7-2, a crotch belt 7-3, pedals 7-4 and a limit ring 7-6, wherein the head fixing belt 7-1 and the trunk fixing belt 7-2 are fixed and unfastened through sewing buckles on the cloth surface. The crotch strap 7-3 is sewed with a buckle thereon for fixing the thigh. The length of the pedal 7-4 is adjusted to adapt to people with different heights by sewing the Chinese character 'ri' button. The stretcher cloth component 7 is mainly formed by sewing sailcloth, polyester silk belts 7-7, inserting openings, Chinese character 'ri' buckles 8-2 and buckle belts. The polyester silk belts 7-7 are arranged at a plurality of positions on the cloth surface, the reinforcing belts are arranged according to the weight of the human body part and are used for reinforcing the strength of the cloth surface, and the limiting rings are used for limiting the shoulder straps.

The working principle of this real application:

as shown in fig. 1 to 12, the stretcher (fig. 2) is composed of a stretcher frame assembly (fig. 3) and a stretcher cloth (fig. 7), and the stretcher (fig. 2) is fixed by a front support 1-1 and a rear support 1-2 on the floor structure of the airplane (fig. 1). After the stretcher shown in fig. 2 is installed in the cabin, a rescuer can take the stretcher out of the machine to unfold the leg assembly 5, place the stretcher shown in fig. 2 beside the sick and wounded, confirm that the head fixing strap 7-1, the crotch strap 7-3, the pedals 7-4, the trunk fixing strap 7-2 and the safety strap are unfolded 3-4, gently lift the sick and wounded on the stretcher, place the stretcher on the surface of the stretcher cloth 7, fix the head fixing strap 7-1, the crotch strap 7-3, the pedals 7-4, the fixing strap 7-2 and the safety strap 3-4 on the sick and wounded, lift the rescuer onto the rescue airplane by respectively lifting the main rods at the two ends of the stretcher after two rescuers are in front and back, clamp the upper rod 6-1 of the stretcher to the rear support position on the airplane floor to the bottom, place the lower rod 6-2 of the stretcher into the clamping groove of the front support of the airplane floor and fix the stretcher on the front lock catch The pole, finally, the supporting leg assembly 5 of the stretcher is folded inwards along the axis of the stretcher pole. If necessary, the rescue personnel can hang on the two shoulders by the aid of the shoulder belts 3-3 at the two ends of the stretcher so as to facilitate the rescue personnel to transfer the sick and wounded, and the stretcher is fixed on an airplane and then needs to be fixed by the buckle belts on the shoulder belts after the shoulder belts are folded, so that the rescue personnel can be prevented from being stepped on dirty or stumbled over other personnel. When only one rescue worker transfers the wounded, the support legs 5 of the stretcher are folded, then the rescue worker stands between the two upper rods of the stretcher to carry the head of the wounded, holds the stretcher rods with hands and drags the stretcher by the aid of the shoulder straps 3-3 to transfer the wounded, and when the wounded is moved to the position near the helicopter, the two workers lift the wounded on the plane.

When the helicopter can only be suspended, the stretcher is put down by connecting a winch on the rescue helicopter with a winch hanging belt 3-5 on the stretcher, the sick and wounded are transferred to the stretcher and fixed, then the stretcher and the sick and wounded are hung into a cabin by the winch, and finally the stretcher is fixed on the front support and the rear support of the airplane floor. When the stretcher is not used for a long time on an airplane, the stretcher can be taken down and stored after being folded, at the moment, the U-shaped part 4-1 needs to be pulled outwards to the two ends of the stretcher to fold the folding components 3-1, then the sliding sleeve 6-10 slides out of the H joint 6-4, and the frame of the stretcher is folded as shown in figure 12.

Claims

1. A light helicopter stretcher capable of being folded in multiple directions, which comprises a stretcher rod component (6), a folding component (4) and a stretcher cloth component (7), it is characterized in that the two stretcher bar components (6) are arranged in parallel and comprise an upper bar (6-1), a lower bar (6-2), a butt joint (6-3)) and an H joint (6-4), the end heads of one ends of the upper rod (6-1) and the lower rod (6-2) are respectively provided with a butt joint (6-3), the H joint (6-4) connects the upper rod (6-1) and the lower rod (6-2) at the butt joint (6-3) to enable the upper rod (6-1) and the lower rod (6-2) to be relatively folded, and a B positioning bead (6-9) and a sliding sleeve (6-10) for fixing the B positioning bead are further arranged at the joint of the two butt joints (6-3); two folding assemblies (4) are arranged in parallel relatively at the vertical position of the stretcher bar assembly, each folding assembly (4) comprises a U-shaped part (4-1), a bent bar (4-2) and a joint (4-3), the number of the bent bars (4-2) is two, one end of each bent bar is provided with the joint (4-3) to be connected with a stretcher bar, the other end of each bent bar is a free end, the two free ends are connected through the U-shaped parts (4-1), and the two bent bars (4-2) can move towards the opening of the U-shaped part (4-1) relatively to realize folding; a supporting leg assembly (5) for providing supporting force for the stretcher is arranged below the joint (4-3); the stretcher cloth component is designed according to the load-bearing distribution of a human body and comprises main cloth (7-5), a head fixing band (7-1), a trunk fixing band (7-2), a crotch band (7-3), pedals (7-4) and a limiting ring (7-6), and the stretcher cloth and the stretcher rod are fixed together through screws and nuts.

2. A light-weight helicopter stretcher that can be folded in multiple directions according to claim 1 characterized by that the inside of said U-shaped member (4-1) is equipped with the second wedge surface (10-1) and the third wedge surface (10-2) that make the surface contact with the joint (4-3) and limit the position of the curved bar.

3. A light weight helicopter stretcher that can be folded in multiple directions as claimed in claim 1 characterized by that the lower part of the joint (4-3) is provided with a "convex" structure (9-1) that limits the supporting leg assembly.

4. A light weight helicopter stretcher that can be folded in multiple directions as claimed in claim 1 characterized by that the other side of the lower part of the joint (4-3) is equipped with a wedge face one (9-2) that limits the curved bar (4-2) and contacts the surface.

5. A light weight helicopter stretcher that can be folded in multiple directions according to claim 1 characterized by that the lower part of the joint (4-3) further comprises a positioning bead (4-4).

6. A light weight helicopter stretcher foldable in multiple directions as claimed in claim 3 characterized by that the other end of said upper bar (6-1) is provided with a knob (6-5).

7. A light weight helicopter stretcher foldable in multiple directions according to claim 1 characterized by that the other end of said lower bar (6-2) further comprises a roller (6-7), the roller (6-7) is connected with said lower bar (6-2) by a roller joint (6-6).

8. The light weight helicopter stretcher that can be folded in multiple directions of claim 1 further comprising shoulder straps that are polyester straps, one end of which is fixed on the two upper stretcher bars and the other end of which is a free end, the free end is connected with a length-adjustable buckle, and the shoulder straps can be fastened and fixed by nylon buckles after being folded.

9. The light helicopter stretcher capable of being folded in multiple directions according to claim 1, characterized in that the stretcher cloth component (7) comprises a main cloth (7-5), a head fixing belt (7-1), a trunk fixing belt (7-2), a crotch belt (7-3), pedals (7-4) and a limit ring (7-6), wherein the head fixing belt (7-1) and the trunk fixing belt (7-2) are fixed and unfastened by sewing buckles on the cloth surface, and the crotch belt (7-3) is provided with buckles for fixing the thigh; the length of the pedal is adjusted to adapt to people with different heights by sewing the Chinese character 'ri' buckles; the stretcher cloth is mainly sewn through canvas silk cloth, polyester silk belts 7-7, inserting ports, Chinese character 'ri' buckles and buckling belts, the polyester silk belts are arranged at a plurality of positions on the cloth surface according to the weight of the human body; a limiting ring (7-6) for limiting the shoulder strap.

10. The light weight helicopter stretcher that can be folded in multiple directions of claim 1 further comprising a safety belt, wherein the safety belt is a two-point safety belt, and the circular hole of the end connecting sheet is fixed with the stretcher bar by a screw and a nut; the stretcher further comprises a winch hanging belt, wherein the winch hanging belt is formed by sewing a polyester fiber belt and is fixed by sharing a screw, a nut and a gasket with the safety belt.