CN219629961U - Folding movable stretcher - Google Patents

Abstract

The utility model relates to a folding movable stretcher, which comprises a main stretcher and two expansion frames which are respectively and slidably arranged at two sides of the main stretcher, wherein the expansion frames are in telescopic fit with the main stretcher, and two ends of the main stretcher are respectively provided with a positioning assembly; the main stretcher comprises a main frame and main bearing cloth arranged above the main frame; the expansion frame comprises an auxiliary frame which is connected with the main frame in a sliding way and auxiliary bearing cloth which is arranged above the auxiliary frame; according to the utility model, the middle beam, the main side beam and the end cylinder are matched to form the main frame, the auxiliary side beam and the end beam are matched to form the auxiliary frame, the main frame and the auxiliary frame are connected in a sliding manner to form the telescopic matching of the main stretcher and the expansion frame, so that the folding operation is convenient, the expansion frame is locked and unlocked by the positioning assembly accommodated in the end cylinder, the stability of the stretching and folding states of the main stretcher and the expansion frame is effectively ensured, and the expansion frame is conveniently slid to stretch and fold.

Description

Folding movable stretcher

Technical Field

The utility model relates to the technical field of stretchers, in particular to a folding movable stretcher.

Background

The stretcher is mainly used for medical care activities, is used when a patient is transferred, and is usually arranged in an ambulance. The stretcher mainly comprises a stretcher rod and stretcher cloth fixed on the stretcher rod, when emergency treatment is sudden, medical staff carries the stretcher, patients are transferred into an ambulance, and after the patients arrive at a hospital, the patients are transferred to a sickbed through the stretcher.

In the prior art, the stretcher is usually of a fixed length, can not be folded in a telescopic way, is easy to cause the action obstruction of medical staff in the emergency treatment for a second, and is inconvenient to use because the stretcher is required to be moved in a very laborious manner in narrow spaces such as an elevator and the like and in the transferring use of a platform pavement. Therefore, in order to solve the above-mentioned problems, a folding movable stretcher has been proposed.

Disclosure of Invention

The utility model aims to provide a folding movable stretcher, which solves the problems that the stretcher in the prior art can not be folded in a telescopic way, is easy to cause the action obstruction of medical staff, and is inconvenient to use because the stretcher needs to be moved with great effort.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the folding movable stretcher comprises a main stretcher and two expansion frames which are respectively and slidably arranged at two sides of the main stretcher, wherein the expansion frames are in telescopic fit with the main stretcher, and positioning assemblies are arranged at two ends of the main stretcher;

the main stretcher comprises a main frame and main bearing cloth arranged above the main frame, the main frame comprises a middle beam and two main side beams arranged at two ends of the middle beam, two sides of the middle beam are respectively provided with an end cylinder connected with the ends of the main side beams, and two sides of the main bearing cloth are detachably connected with the main side beams;

the expansion frame comprises an auxiliary frame which is in sliding connection with the main frame and auxiliary bearing cloth which is arranged above the auxiliary frame, the auxiliary frame comprises two auxiliary side beams and two end beams, the two auxiliary side beams are respectively in sliding connection with the main side beams, two sides of the auxiliary bearing cloth are detachably connected with the auxiliary side beams, and two ends of the auxiliary side beams are provided with positioning holes;

the locating component comprises a driving rod accommodated in the end cylinder, two symmetrical sliding seats which are arranged on two sides of the end cylinder, two ends of the driving rod are rotationally connected with end covers which are detachable from the end cylinder, one end of the driving rod penetrating through the end covers is provided with a handle, the driving rod is connected with and drives the moving seat, the top end of the moving seat extending out of the end cylinder is detachably provided with a locating rod, and the locating rod is matched with the locating hole.

Preferably, the outer wall of the main boundary beam is provided with a first chute, the outer wall of the auxiliary boundary beam is provided with a second chute, the two ends of the main boundary beam are all detachable with a first guide block, one end of the auxiliary boundary beam, which is close to the main boundary beam, is detachable with a second guide block, the first guide block is in sliding connection with the second chute, and the second guide block is in sliding connection with the first chute.

Preferably, the positioning assembly further comprises guide seats arranged on two sides of the end cylinder, the guide seats are matched with one ends of the positioning rods penetrating through the movable seats, and the guide seats can be detached to form third sliding blocks in sliding connection with the auxiliary side beams.

Preferably, the landing gear further comprises two landing gears which are connected with the expansion frame respectively, the landing gear comprises two guide rods which are arranged on two sides of the bottom surface of the auxiliary frame respectively, and a first fixing rod and a second fixing rod which are arranged between the two guide rods in parallel, both ends of the first fixing rod and both ends of the second fixing rod are connected with the guide rods, the first fixing rod is hinged with a foot wheel frame, moving wheels are arranged on two sides of the bottom end of the foot wheel frame respectively, and the second fixing rod is hinged with a telescopic piece which is connected with and drives the foot wheel frame to rise and fall.

Preferably, the landing gear further comprises a moving rod which is arranged on one side of the first fixed rod, deviating from the second fixed rod, wherein two ends of the moving rod are in sliding connection with the guide rod, the moving rod slides between the end part of the guide rod and the first fixed rod, the moving rod is hinged with a follow-up frame, and the bottom end of the follow-up frame is hinged with a cross beam at the bottom of the foot wheel frame.

Preferably, the landing gear further comprises an auxiliary frame arranged on one side, deviating from the follow-up frame, of the caster frame, the top end of the auxiliary frame is hinged with the first fixing rod, the bottom end of the auxiliary frame is hinged with a cross beam at the bottom of the caster frame, and the cross beam at the top of the auxiliary frame is hinged with the extending end of the telescopic piece.

The utility model has at least the following beneficial effects:

1. according to the utility model, the middle beam, the main side beam and the end cylinder are matched to form the main frame, the auxiliary side beam and the end beam are matched to form the auxiliary frame, the main frame and the auxiliary frame are connected in a sliding manner to form the telescopic matching of the main stretcher and the expansion frame, so that the folding operation is facilitated, the expansion frame is locked and unlocked by the positioning assembly accommodated in the end cylinder, the stability of the stretching and folding states of the main stretcher and the expansion frame is effectively ensured, and the expansion frame is conveniently stretched and folded in a sliding manner;

2. according to the utility model, the landing gear is adopted, the first fixing rod and the second fixing rod are erected through the guide rod, the first fixing rod is used for hinging and positioning the foot wheel frame, the second fixing rod is used for hinging and installing the telescopic piece, so that the foot wheel frame is driven by the telescopic piece to fold and rise and fall, the auxiliary frame is matched with the follow-up frame to assist the foot wheel frame, the foot wheel frame is driven by the telescopic piece to retract and fall, and the whole auxiliary movement is carried out through the moving wheel, so that the tilting and horizontal state of a patient can be conveniently transported, and the folding and lifting mechanism is more labor-saving and more convenient.

Drawings

FIG. 1 is a schematic perspective view of a folded state of the present utility model;

FIG. 2 is a schematic view of an exploded construction of the present utility model in a folded state;

FIG. 3 is a schematic perspective view of the utility model in an unfolded state;

FIG. 4 is a schematic view of the front view of the present utility model in an expanded state;

FIG. 5 is a schematic perspective view of the primary stretcher;

FIG. 6 is a schematic diagram of the exploded construction of the primary stretcher;

FIG. 7 is a schematic perspective view of an expansion bracket;

FIG. 8 is a schematic diagram of an exploded construction of the expansion shelf;

FIG. 9 is a schematic view of an exploded view of the engagement of the end barrel with the positioning assembly;

fig. 10 is a schematic perspective view of the landing gear in a folded state.

In the reference numerals:

1. a main stretcher; 11. a main frame; 111. a middle beam; 112. a main side beam; 113. a first chute; 114. an end cylinder; 115. a limiting hole; 12. a primary load-bearing cloth; 13. a main support lug; 14. a main handle; 15. a first slider; 16. a first guide block;

2. an expansion frame; 21. a subframe; 211. a secondary side beam; 212. an end beam; 213. a second chute; 214. positioning holes; 22. an auxiliary carrying cloth; 23. an auxiliary support lug; 24. an auxiliary handle; 25. a second slider; 26. a second guide block; 27. a grip lever;

3. a positioning assembly; 31. a driving rod; 32. a rotary base; 33. an end cap; 34. a handle (runner); 35. a movable seat; 36. a positioning rod; 37. a guide seat; 38. a spring; 39. a third slider;

4. landing gear; 41. a first fixing rod; 42. a guide rod; 43. a second fixing rod; 44. a leg frame; 45. a moving wheel; 46. an auxiliary frame; 47. a telescoping member; 48. a moving rod; 49. and a follow-up frame.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-10, the present utility model provides a technical solution: the folding movable stretcher comprises a main stretcher 1 and two expansion frames 2 which are respectively and slidably arranged at two sides of the main stretcher 1, wherein the expansion frames 2 are in telescopic fit with the main stretcher 1, and two ends of the main stretcher 1 are respectively provided with a positioning assembly 3;

the main stretcher 1 comprises a main frame 11 and a main carrying cloth 12 arranged above the main frame 11, wherein the main frame 11 comprises a middle beam 111 and two main side beams 112 arranged at two ends of the middle beam 111, both sides of the middle beam 111 are respectively provided with an end cylinder 114 connected with the end parts of the main side beams 112, specifically, the end cylinders 114 are fixedly connected with the bottom surfaces of the end parts of the main side beams 112, and both sides of the main carrying cloth 12 are detachably connected with the main side beams 112;

the expansion frame 2 comprises an auxiliary frame 21 in sliding connection with the main frame 11 and auxiliary carrying cloth 22 arranged above the auxiliary frame 21, wherein the auxiliary frame 21 comprises two auxiliary side beams 211 and two end beams 212, the auxiliary frame 21 is a frame body formed by the two auxiliary side beams 211 and the two end beams 212, the two auxiliary side beams 211 are respectively parallel to the two main side beams 112, the two end beams 212 are respectively connected with the bottom surfaces of the two ends of the auxiliary side beams 211, the two auxiliary side beams 211 are respectively in sliding connection with the main side beams 112, two sides of the auxiliary carrying cloth 22 are detachably connected with the auxiliary side beams 211, and positioning holes 214 are respectively formed in the two ends of the auxiliary side beams 211;

the positioning assembly 3 comprises a driving rod 31 accommodated in an end cylinder 114, two movable seats 35 symmetrically and slidably installed on two sides of the end cylinder 114, specifically, limit holes 115 are formed in the top surfaces of two sides of the end cylinder 114, the movable seats 35 are matched with the limit holes 115, the bottom ends of the movable seats 35 are attached to the inner wall of the end cylinder 114, end covers 33 detachable from the end cylinder 114 are rotatably connected to the two ends of the driving rod 31, specifically, the end parts of the driving rod 31 are matched with the end covers 33 through stepped shaft holes, handles 34 are arranged at one ends of the driving rod 31 penetrating through the end covers 33, specifically, the handles 34 are detachably connected with the driving rod 31, the driving rod 31 is connected with and drives the movable seats 35, specifically, internal threaded holes are formed in the bottoms of the movable seats 35, external threads matched with the internal threaded holes in the bottoms of the movable seats 35 are formed in the outer walls of the bottoms of the driving rod 31, positioning rods 36 are detachably arranged at the tops of the movable seats 35 in opposite directions, specifically, positioning rods 36 are arranged at the tops of the movable seats 35 extend out of the end cylinders 114, handles 34 are etched in the internal threaded holes, the positioning rods 36 are detachably matched with the threaded holes in the tops of the positioning rods 36, and the positioning rods 214 are matched with the internal threaded holes in the bottoms of the positions of the movable seats.

The outer wall of the main side beam 112 is provided with a first sliding groove 113, the main side beam 112 is specifically an aluminum profile, the outer walls of four sides are respectively provided with a first sliding groove 113, the outer wall of the auxiliary side beam 211 is specifically a second sliding groove 213, the outer walls of four sides are respectively provided with a second sliding groove 213, the two ends of the main side beam 112 are respectively provided with a first guide block 16, one end of the auxiliary side beam 211, which is close to the main side beam 112, is provided with a second guide block 26 in a detachable mode, the first guide block 16 is in sliding connection with the second sliding groove 213, the second guide block 26 is in sliding connection with the first sliding groove 113, specifically, two sides of the first guide block 16 are respectively in sliding connection with the first sliding groove 113 and the second sliding groove 213 of the outer wall of the adjacent side beam 112 and the auxiliary side beam 211, the two sides of the second guide block 26 are respectively in sliding connection with the first sliding groove 113 and the second sliding groove 213 of the outer wall of the adjacent side beam 112, and the second guide block 26 is in sliding connection with the second sliding groove 213 of the outer wall of the adjacent side beam 211, and the second guide block 26 is in sliding connection with the auxiliary side beam 211 through the first guide block 21 and the second guide block 211, and the two-way side frame 21 is prevented from being in sliding connection with the auxiliary side beam 21 and vice side frame 21.

The positioning assembly 3 further comprises a guide seat 37 installed on two sides of the end cylinder 114, the guide seat 37 is matched with one end of the positioning rod 36 penetrating through the movable seat 35, specifically, the top end of the guide seat 37 is matched with a hole shaft of the positioning rod 36, a third sliding block 39 slidably connected with the auxiliary side beam 211 is detachably arranged on the guide seat 37, specifically, the third sliding block 39 is arranged on the end face of one side, away from the movable seat 35, of the guide seat 37, the third sliding block 39 is slidably matched with a second sliding groove 213 on the side wall of the auxiliary side beam 211, namely, the guide seat 37 can be matched with the main side beam 112 to clamp the auxiliary side beam 211, and the auxiliary side beam 211 is further guided through the third sliding block 39, so that the structure is more stable.

The positioning assembly 3 further comprises two symmetrical rotary seats 32 arranged in the end barrels 114, the rotary seats 32 are rotationally connected with the driving rod 31, specifically, two stepped shaft sections are arranged in parallel in the middle of the driving rod 31, the outer diameter of each stepped shaft section is larger than that of each shaft section on two sides of the stepped shaft section, the rotary seats 32 are matched with the hole shafts of the stepped shaft sections, the rotary seats 32 are connected with the end barrels 114 through screws, springs 38 sleeved on the outer sides of the driving rod 31 are arranged between the rotary seats 32 and the movable seats 35, the driving rod 31 can be rotationally installed through the rotary seats 32, the movable seats 35 are tensioned through the springs 38, and stable matching of the positioning rods 36 and the positioning holes 214 is effectively improved.

In this embodiment, the main frame 11 is formed by matching the middle beam 111, the main side beam 112 and the end cylinder 114, the auxiliary frame 21 is formed by matching the auxiliary side beam 211 and the end beam 212, the main frame 11 and the auxiliary frame 21 are connected in a sliding manner by the first guide block 16 and the second guide block 26, the telescopic matching of the main stretcher 1 and the extension frame 2 is formed, the folding and using are convenient, the main carrying cloth 12 and the auxiliary carrying cloth 22 are matched, a patient is carried, the extension frame 2 is locked and unlocked by the positioning component 3 accommodated in the end cylinder 114, in the process of locking and unlocking the position of the extension frame 2, the driving rod 31 is rotated by the handle 34 to drive the two movable seats 35 to slide back or face to face each other, the positioning rod 36 is driven by the movable seats 35 to be matched with or separated from the positioning holes 214, and the positioning rod 36 is locked with the positioning holes 214 at two ends of the auxiliary side beam 211 respectively, so that the extension frame 2 is in an extended or folded state, and the extension frame 2 is conveniently extended and folded when the positioning rod 36 is separated from the positioning holes 214.

Example 2

Referring to fig. 5-8, the difference is that, based on embodiment 1: the main support cloth 12 is provided with the main support lugs 13 on both sides, the main frame 11 is provided with the main handle 14 corresponding to the main support lugs 13 on both sides, the two ends of the main handle 14 are detachably provided with the first sliding blocks 15 installed in the first sliding grooves 113, the first sliding blocks 15 are specifically slidably installed in the first sliding grooves 113 on the top surface of the main side beam 112, the two ends of the main handle 14 are connected with the first sliding blocks 15 through bolts, the main handle 14 is detachably connected with the main support lugs 13, specifically, after the main support lugs 13 penetrate through the main handle 14 and wrap the main handle 14, the overlapped parts of the main support lugs 13 are adhered by magic tape, and then are fastened by penetrating the binding bands, so that the main side beam 112 can be clamped by the main handle 14 and the first sliding blocks 15 through the connection between the main handle 14 and the first sliding blocks 15, the positions of the main handle 14 are fixed, the main handle 14 can be connected with the main side beam 112 through the first sliding blocks 15 and the first sliding grooves 113, the connection of the main handle 14 and the main side beam 112 is more convenient to assemble, disassemble and maintain, and the connection of the main handle 14 and the main support cloth 13 is more convenient to disassemble and replace;

the two sides of the auxiliary supporting cloth 22 are respectively provided with an auxiliary supporting lug 23, two sides of the auxiliary frame 21 are respectively provided with an auxiliary handle 24, two ends of the auxiliary handles 24 can be detached and are provided with a second sliding block 25 which is arranged in a second sliding groove 213, the second sliding block 25 is specifically arranged in the second sliding groove 213 on the top surface of the auxiliary side beam 211 in a sliding mode, two ends of the auxiliary handles 24 are connected with the second sliding block 25 through bolts, the auxiliary handles 24 are detachably connected with the auxiliary supporting lugs 23, specifically, the auxiliary supporting lugs 23 penetrate through the auxiliary handles 24 and cover the auxiliary handles 24, the overlapped parts of the auxiliary supporting lugs 23 are adhered through magic tapes, the auxiliary supporting cloth is fastened through penetrating belts, the auxiliary handles 24 are slightly lower than the main handles 14, the main supporting cloth 12 and the auxiliary supporting cloth 22 can be in laminated fit, the auxiliary supporting cloth can be connected with the second sliding groove 213 through the second sliding block 25, the auxiliary handles 24 and the second sliding block 25 are locked, the auxiliary side beam 211 is clamped by the auxiliary handles 24 and the auxiliary supporting lugs 25, the auxiliary handles 24 are fixed in position, the auxiliary supporting lugs 24 are more convenient to assemble and disassemble and maintain, and disassemble and assemble and disassemble, and assemble the auxiliary supporting cloth 23 is more convenient to connect with the auxiliary supporting handle 23.

The expansion bracket 2 further comprises a holding rod 27, two ends of the holding rod 27 are respectively connected with one ends of the two auxiliary side beams 211 extending out of the main frame 11, specifically, the holding rod 27 is in a U shape, and foam is wrapped on the outer wall of the holding rod, so that the holding is facilitated.

In this embodiment, the main carrying cloth 22 is loaded and tensioned above the main stretcher 1 through the connection of the main handle 14 and the main support lug 13, the auxiliary carrying cloth 22 is loaded and tensioned above the extension frame 2 through the connection of the auxiliary handle 24 and the auxiliary support lug 23, and after the extension frame 2 extends out of the main stretcher 1, the extension frame 2 is locked in an extended state through the cooperation of the positioning rod 36 and the positioning hole 214 of the auxiliary side beam 211 near one end of the main stretcher 1, i.e. the whole lifting can be performed through the holding rod 27.

Example 3

Referring to fig. 1 to 4 and 10, on the basis of embodiment 1 or 2, the difference is that: the landing gear 4 that still includes two respectively with extension frame 2 is connected, landing gear 4 includes two guide bars 42 that set up respectively in subframe 21 bottom surface both sides and set up first dead lever 41 and second dead lever 43 side by side between two guide bars 42, specifically, guide bar 42 and vice boundary beam 211 parallel arrangement, and the both ends of guide bar 42 are connected through the axle bed with vice boundary beam 211, the both ends of first dead lever 41 and second dead lever 43 all are connected with guide bar 42, specifically, the both ends fixed setting of first dead lever 41 and second dead lever 43 are with guide bar 42 hole axle complex axle bed, and fix through the bolt, first dead lever 41 articulates there is truckle frame 44, the both sides of truckle frame 44 bottom all are equipped with and remove wheel 45, second dead lever 43 articulates there is the extensible member 47, extensible member 47 is connected and drives truckle frame 44 and to rise and fall, can erect first dead lever 41 and second dead lever 43 through guide bar 41, and then by first dead lever 41 to truckle frame 44 articulated location, and by second dead lever 43 to install extensible member 47 and carry out the flexible truckle frame 44, can all move the truckle frame 44 through the articulated movable wheel frame 45, the whole state of supporting wheel frame 45 is convenient for moving, can be moved through the whole and the whole movable and the support wheel frame 44 is moved through the telescopic member 45.

The landing gear 4 further comprises a moving rod 48 which is arranged on one side of the first fixed rod 41 and is away from the second fixed rod 43 in parallel, two ends of the moving rod 48 are slidably connected with the guide rod 42, specifically, two ends of the moving rod 48 are fixedly provided with shaft seats which are matched with holes of the guide rod 42, the moving rod 48 slides between the end part of the guide rod 42 and the first fixed rod 41, specifically, the shaft seats of the end part of the moving rod 48 are bidirectionally limited by the shaft seats of the end part of the first fixed rod 41 and the shaft seats of the end part of the guide rod 42, the moving rod 48 is hinged with a follow-up frame 49, the bottom end of the follow-up frame 49 is hinged with a cross beam at the bottom of the caster frame 44, the caster frame 44 can be reinforced along with the follow-up frame 49 through the matching of the moving rod 48, the top end of the follow-up frame 49 drives the moving rod 48 to slide along the guide rod 42, and when the caster frame 44 is retracted, the shaft seats of the end part of the moving rod 48 are contacted with the shaft seats of the end part of the guide rod 42, and then the caster frame 44 is bidirectionally limited when the caster frame 44 falls down.

The landing gear 4 further comprises an auxiliary frame 46 arranged on one side, deviating from the follow-up frame 49, of the wheel frame 44, the top end of the auxiliary frame 46 is hinged to the first fixing rod 41, the bottom end of the auxiliary frame 46 is hinged to a cross beam at the bottom of the wheel frame 44, the cross beam at the top of the auxiliary frame 46 is hinged to the extending end of the telescopic piece 47, specifically, when the wheel frame 44 is retracted, the bent part of the auxiliary frame 46 contacts with the second fixing rod 43, namely the wheel frame 44 can be reinforced through the auxiliary frame 46, and when the wheel frame 44 is retracted, the auxiliary frame 46 contacts with the second fixing rod 43, so that the stability of the landing gear 4 is improved.

The front projection views of the caster frame 44, the auxiliary frame 46 and the follower frame 49 are all H-shaped, the vertical part is square pipe, and the horizontal part is round bar.

In this embodiment, the guide rod 42 is matched with the first fixing rod 41 and the second fixing rod 43 to form a frame parallel to the lower part of the expansion frame 2, the end cylinder 114 is located between the frame and the auxiliary frame 21, the first fixing rod 41 is used for hinging and positioning the caster frame 44, the auxiliary frame 46 is used for reinforcing the caster frame 44, the beam part at the bottom of the caster frame 44 is used for hinging the follower frame 49, the top end of the follower frame 49 is slidably connected with the guide rod 42 through the moving rod 48, the auxiliary frame 46 is further driven by the telescopic piece 47 to drive the caster frame 44 to fold and lift, when the caster frame 44 is retracted, the shaft seat at the end part of the moving rod 48 is contacted with the shaft seat at the end part of the first fixing rod 41, when the caster frame 44 is retracted, the shaft seat at the end part of the moving rod 48 is contacted with the shaft seat at the end part of the guide rod 42, so that the caster frame 44 is bidirectionally limited, and after the caster frame 44 is retracted and is retracted, the whole auxiliary movement can be carried out through the moving wheel 45, so that the patient can be conveniently moved in an inclined and horizontal state.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A folding movable stretcher, characterized in that: the stretcher comprises a main stretcher (1) and two expansion frames (2) which are respectively and slidably arranged at two sides of the main stretcher (1), wherein the expansion frames (2) are in telescopic fit with the main stretcher (1), and positioning assemblies (3) are respectively arranged at two ends of the main stretcher (1);

the main stretcher (1) comprises a main frame (11) and main bearing cloth (12) arranged above the main frame (11), the main frame (11) comprises a middle beam (111) and two main side beams (112) arranged at two ends of the middle beam (111), two sides of the middle beam (111) are respectively provided with an end cylinder (114) connected with the end parts of the main side beams (112), and two sides of the main bearing cloth (12) are detachably connected with the main side beams (112);

the expansion frame (2) comprises an auxiliary frame (21) which is in sliding connection with the main frame (11) and auxiliary bearing cloth (22) which is arranged above the auxiliary frame (21), the auxiliary frame (21) comprises two auxiliary side beams (211) and two end beams (212), the two auxiliary side beams (211) are respectively in sliding connection with the main side beam (112), two sides of the auxiliary bearing cloth (22) are detachably connected with the auxiliary side beams (211), and positioning holes (214) are formed in two ends of each auxiliary side beam (211);

the positioning assembly (3) comprises a driving rod (31) accommodated in an end cylinder (114), two symmetrical sliding seats (35) arranged on two sides of the end cylinder (114), two ends of the driving rod (31) are rotatably connected with end covers (33) which are detachable from the end cylinder (114), one end of the driving rod (31) penetrating through the end covers (33) is provided with a handle (34), the driving rod (31) is connected with and drives the moving seat (35), the moving seat (35) stretches out of the top end of the end cylinder (114) and can be detached from a positioning rod (36), and the positioning rod (36) is matched with a positioning hole (214).

2. A folding mobile stretcher according to claim 1 characterized in that: first spout (113) has been seted up to the outer wall of main boundary beam (112), second spout (213) have been seted up to the outer wall of vice boundary beam (211), first guide block (16) have all been dismantled at the both ends of main boundary beam (112), second guide block (26) have been dismantled to the one end that vice boundary beam (211) is close to main boundary beam (112), first guide block (16) and second spout (213) sliding connection, second guide block (26) and first spout (113) sliding connection.

3. A folding mobile stretcher according to claim 2 characterized in that: the positioning assembly (3) further comprises guide seats (37) arranged on two sides of the end cylinder (114), the guide seats (37) are matched with one ends of the positioning rods (36) penetrating through the movable seats (35), and the guide seats (37) are detachably provided with third sliding blocks (39) which are in sliding connection with the auxiliary side beams (211).

4. A folding mobile stretcher according to claim 1 characterized in that: the landing gear (4) that still includes two and be connected with extension frame (2) respectively, landing gear (4) are including two guide bars (42) that set up respectively in subframe (21) bottom surface both sides and set up first dead lever (41) and second dead lever (43) between two guide bars (42) side by side, the both ends of first dead lever (41) and second dead lever (43) all are connected with guide bar (42), first dead lever (41) articulates there is truckle frame (44), the both sides of truckle frame (44) bottom all are equipped with removal wheel (45), second dead lever (43) are articulated to have extensible member (47), extensible member (47) are connected and drive truckle frame (44) rise and fall.

5. A folding movable stretcher according to claim 4 characterized in that: the landing gear (4) further comprises a moving rod (48) which is arranged on one side of the first fixed rod (41) away from the second fixed rod (43) in parallel, two ends of the moving rod (48) are slidably connected with the guide rod (42), the moving rod (48) slides between the end part of the guide rod (42) and the first fixed rod (41), the moving rod (48) is hinged with a follow-up frame (49), and the bottom end of the follow-up frame (49) is hinged with a cross beam at the bottom of the caster frame (44).

6. A folding movable stretcher according to claim 5 characterized in that: the landing gear (4) further comprises an auxiliary frame (46) arranged on one side, deviating from the follow-up frame (49), of the foot wheel frame (44), the top end of the auxiliary frame (46) is hinged with the first fixed rod (41), the bottom end of the auxiliary frame (46) is hinged with a cross beam at the bottom of the foot wheel frame (44), and the cross beam at the top of the auxiliary frame (46) is hinged with the overhanging end of the telescopic piece (47).