CN208989396U - A kind of stretcher - Google Patents

Abstract

The utility model relates to a kind of rescue handbarrows, in particular to a kind of stretcher, include skeleton, canvas, fixing piece and multifunctional module, fixing piece includes integrally formed skeleton interconnecting piece and multifunctional module interconnecting piece, skeleton interconnecting piece is arranged and is fixed on skeleton, multifunctional module interconnecting piece is towards ground, and the axis of multifunctional module interconnecting piece and ground are in 45 ° of angles, direction of the multifunctional module interconnecting piece on a side end face on ground along multifunctional module interconnecting piece axis offers mounting hole；Multifunctional module includes idler wheel and supporting leg, idler wheel is vertically mounted on the intermediate position of supporting leg, the end face of connecting pin and the axis of supporting leg are in 45° angle, the end face of connecting pin is bonded with the lower end surface of multifunctional module interconnecting piece, installation bolt is provided on the end face of connecting pin, and supporting leg can be around installation bolt rotation.The utility model reached can either rapidly carrying patient, and the stretcher for being loaded with patient can be made to keep stable effect in ambulance.

Description

A kind of stretcher

Technical field

The utility model relates to a kind of rescue handbarrow, in particular to a kind of stretcher.

Background technique

Stretcher is used for carrying patient as rescue tool indispensable on ambulance, can be sent to hospital's progress in time Treatment.Stretcher is divided into many kinds, there is light scoop stretcher, there is comfortable elevating stretcher, and the wheel of walking for having fast and easy to transport is carried on a shoulder pole Frame.

It is generally required in large-scale rescue site when personnel amount more (especially ambulant patient is more) for needing to succour The patient of rescue site is rapidly sent to treatment.Using wheeled stretcher although can quick and laborsaving carrying patient, but walk Wheel stretcher is difficult to stablize in ambulance, and wheeled stretcher can generate movement when brake or starting, knock patient It touches.Therefore, at present used in stretcher is difficult to realize quickly and effortlessly carrying patient and to make the stretcher for being loaded with patient It is relatively stable on ambulance.

Utility model content

The purpose of the utility model is to provide a kind of stretcher, reached can either rapidly carrying patient, and can make to carry There is the stretcher of patient to keep stable effect in ambulance.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of stretcher, includes skeleton, canvas, four groups of fixing pieces and four groups of multifunctional modules, and skeleton is closed and by several bars Part composition, canvas binding and fixing are on skeleton；Fixing piece includes integrally formed skeleton interconnecting piece and multifunctional module interconnecting piece, The axis of skeleton interconnecting piece and multifunctional module interconnecting piece is orthogonal, and skeleton interconnecting piece is arranged and is fixed on skeleton, more function Energy component interconnecting piece is towards ground, and the axis of multifunctional module interconnecting piece and ground are in 45 ° of angles, multifunctional module interconnecting piece Mounting hole is offered along the direction of multifunctional module interconnecting piece axis on a side end face on ground；Multifunctional module includes rolling Wheel and supporting leg, idler wheel are vertically mounted on the intermediate position of supporting leg, and the both ends of supporting leg are respectively support end and connecting pin, connecting pin The axis of end face and supporting leg is in 45° angle, and the end face of connecting pin is bonded with the lower end surface of multifunctional module interconnecting piece, the end of connecting pin Installation bolt is provided on face, and supporting leg can be threadedly coupled around installation bolt rotation, installation bolt with mounting hole.

By using above-mentioned technical proposal, when needing fast removal patient, around installation bolt turning legs, make idler wheel court To the ground, in this way, patient quickly and effortlessly can be carried to ambulance by idler wheel when patient is on stretcher enterprising Row treatment；When the stretcher for being loaded with patient is located on ambulance, around installation bolt turning legs, make the support end of supporting leg towards ground Supporting leg is placed on compartment ground by face later, can guarantee that stretcher keeps stablizing in ambulance in this way.

Preferably, idler wheel is universal wheel.

Preferably, skeleton includes two main frames and two connectors, connector is located between two main frames, main frame The skeleton to form stretcher is connected by two connectors；Connector includes first connecting rod and second connecting rod, first connecting rod and second Connecting rod can be relative to hingedly rotating；The end that two main frames are connect with connector is hollow stem, first connecting rod and second connecting rod It is inserted and secured in the hollow stem of two main frames respectively；Connector further includes fixing sleeve, and fixing sleeve is set in outside hollow stem Side, and the diameter of fixing sleeve is greater than the diameter of first connecting rod and second connecting rod.

By using above-mentioned technical proposal, when stretcher is in running order, fixing sleeve is slided along hollow stem, makes fixing sleeve It is detached from first connecting rod and second connecting rod, then by two main frame doublings, the hollow stem of two main frames can drive the first company respectively Stretcher is folded to realize relative to hingedly rotating, saves the placement space of stretcher by bar and second connecting rod；It needs for stretcher to be in When working condition, two main frames are rotated first and are at horizontality, fixing sleeve is slided along hollow stem again later, makes first Inside fixing sleeve, such fixing sleeve can play a supporting role the connecting portion of connecting rod and second connecting rod, prevent first connecting rod It is hingedly rotated relative to second connecting rod, so that the skeleton of stretcher is in stable working condition.

Preferably, being connected with drag link sleeve below the end of two main frames away from each other, one end of drag link sleeve is socketed with Elastic snap ring is plugged with pull rod on drag link sleeve.

By using above-mentioned technical proposal, when stretcher idler wheel when being contacted with ground, staff holds pull rod and can draw Dynamic stretcher is fast moved on the ground, more laborsaving convenience.

Preferably, pull rod includes the first pull rod and the second pull rod, one end and the drag link sleeve grafting of the first pull rod, the first pull rod The other end and the second pull rod ball-joint.

By using above-mentioned technical proposal, during the work time, the angle of the second pull rod and the first pull rod is adjustable, increases The comfort level operated greatly, more convenient staff pull stretcher to fast move by pull rod.

Preferably, connector also includes hinged block, hinged block is between first connecting rod and second connecting rod, and first connecting rod It is hinged with hinged block respectively with second connecting rod.

It is directly hinged compared to first connecting rod and second connecting rod by using above-mentioned technical proposal, under the action of hinged block, The angle rotated between first connecting rod and second connecting rod is bigger, two main frames fitting when stretcher is in folded state in this way It is even closer, space can be saved.

Preferably, two main frames are divided into the first frame and the second frame, fixing sleeve is set in the hollow stem of the first frame On, be arranged with positioning snap ring on the hollow stem of the second frame, the outer diameter of positioning snap ring is greater than the internal diameter of fixing sleeve, the first frame and Second frame is connect with first connecting rod and second connecting rod respectively.

By using above-mentioned technical proposal, on the one hand the setting of positioning snap ring is capable of increasing second connecting rod and the second frame Bonding strength；On the other hand, positioning snap ring can play the role of stopping limit fixed sleeve, guarantee that fixing sleeve is connected on snap ring When, fixing sleeve can be made to be socketed in the junction of first connecting rod and second connecting rod, guarantee stabilization when stretcher is in running order Property.

Preferably, the hollow rod outer surface of the second frame is radially connected with locating pin, locating pin be located at positioning snap ring with Between fixing sleeve, fixing sleeve offers the open slot of L-type in one end sleeve wall of locating pin.

By using above-mentioned technical proposal, locating pin is able to enter in the open slot of L-type, in the opening of locating pin and L-type It under the cooperation position-limiting action of slot, enables to the position of fixing sleeve relatively fixed, prevents fixing sleeve from sliding and causing stretcher cannot In running order problem.

In conclusion the utility model has following technical effect that through fixing piece and multifunctional module, rolling can be realized Wheel and the switching of supporting leg, reached can either rapidly carrying patient, and the stretcher for being loaded with patient can be made to protect in ambulance Keep steady fixed effect.

Detailed description of the invention

Fig. 1 is the overall structure diagram of embodiment one；

Fig. 2 is enlarged drawing at local B in Fig. 1；

Fig. 3 is local state schematic diagram when skeleton is in running order at connector；

Fig. 4 is enlarged drawing at local A in Fig. 1；

Fig. 5 is the connection status diagram of fixing piece and multifunctional module；

Fig. 6 is the perspective view of the explosion of prominent fixing piece Yu multifunctional module connection relationship；

Fig. 7 is the structural schematic diagram of fixing piece；

Fig. 8 is the appearance schematic diagram of metal reinforced part.

In figure, 1, skeleton；11, main frame；111, hollow stem；112, the first frame；113, the second frame；114, positioning card Ring；115, locating pin；116, drag link sleeve；117, elastic snap ring；118, pull rod；1181, the first pull rod；1182, the second pull rod； 119, support plate；1191, support slot；12, connector；121, first connecting rod；122, second connecting rod；123, fixing sleeve；1231, it opens Mouth slot；124, hinged block；2, fixing piece；21, skeleton interconnecting piece；22, multifunctional module interconnecting piece；221, mounting hole；222, solid Determine hole；223, metal reinforced part；2231, the first cylinder；2232, the second cylinder；2233, connecting plate；225, fastening bolt；23, Reinforcing rib；3, multifunctional module；31, idler wheel；32, supporting leg；321, support end；322, connecting pin；3221, bolt is installed.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.The wherein identical attached drawing of identical components Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "upper", "lower", " bottom Face " and " top surface " refer to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.

Embodiment one:

As shown in Figure 1, a kind of stretcher, including skeleton 1, canvas (not shown), four groups of fixing pieces 2 and four groups are multi-functional Component 3, skeleton 1 are closed and are made of several rod pieces, and for canvas binding and fixing on skeleton 1, four groups of fixing pieces 2 are fixed on skeleton 1 Rod piece on, multifunctional module 3 is connect with fixing piece 2.When stretcher is placed on the ground, multifunctional module 3 and ground face contact, By switching the different shape of multifunctional module 3, stretcher can be made to realize different functions.

Preferably, as shown in Figure 1, skeleton 1 includes two main frames 11 and two connectors 12, connector 12 is located at two Between main frame 11, main frame 11 connects the skeleton for forming stretcher by two connectors 12；As shown in Fig. 2, connector 12 wraps Include first connecting rod 121 and second connecting rod 122, first connecting rod 121 and second connecting rod 122 can be relative to hingedly rotating；Two main frames The end that frame 11 is connect with connector 12 is hollow stem 111, and first connecting rod 121 and second connecting rod 122 are inserted and secured on respectively In the hollow stem 111 of two main frames 11；As shown in Fig. 2, connector 12 further includes fixing sleeve 123, fixing sleeve 123 is set in sky 111 outside of core bar, and the diameter of fixing sleeve 123 is greater than the diameter of first connecting rod 121 and second connecting rod 122.

In conjunction with shown in Fig. 2 and Fig. 3, when stretcher is in running order, fixing sleeve 123 is slided along hollow stem 111, makes to fix Set 123 is detached from first connecting rods 121 and second connecting rod 122, then by two 11 doublings of main frame, the hollow stem of two main frames 11 111 can drive respectively first connecting rod 121 and second connecting rod 122 relative to hinged rotation, fold stretcher to realize, save stretcher Placement space；When needing that stretcher is in running order, two main frames 11 are rotated first and are at horizontality, later Fixing sleeve 123 is slided along hollow stem 111 again, makes the connecting portion of first connecting rod 121 and second connecting rod 122 in fixing sleeve 123 Portion, such fixing sleeve 123 can play a supporting role, and prevent first connecting rod 121 from hingedly rotating relative to second connecting rod 122, thus So that the skeleton 1 of stretcher is in stable working condition.

First connecting rod 121 and second connecting rod 122 are made of stainless steel, and hollow stem 111 uses carbon fibre material system At.

First connecting rod 121 and second connecting rod 122 can be directly hinged, can also be indirectly hinged.Preferably, as shown in Fig. 2, Connector 12 further includes hinged block 124, and hinged block 124 is between first connecting rod 121 and second connecting rod 122, and first connecting rod 121 and second connecting rod 122 it is hinged with hinged block 124 respectively.In this way, directly being cut with scissors compared to first connecting rod 121 and second connecting rod 122 It connects, the angle rotated between first connecting rod 121 and second connecting rod 122 under the action of hinged block 124 is bigger, when stretcher is in folding Two main frames 11 can be bonded even closer when overlapping state, saved space, facilitated placement stretcher.

As shown in Figure 1, main frame 11 can also be subdivided into the first frame 112 and the second frame 113,112 He of the first frame Second frame 113 is connect with first connecting rod 121 and second connecting rod 122 respectively, and fixing sleeve 123 is set in the sky of the first frame 112 On core bar 111.As shown in Fig. 2, it is more convenient when in order to facilitate stretcher assembly to use state, it can be in the second frame Positioning snap ring 114 is arranged on 113 hollow stem 111, the outer diameter of positioning snap ring 114 is greater than the internal diameter of fixing sleeve 123.Positioning snap ring On the one hand 114 setting is capable of increasing the bonding strength of second connecting rod 122 and the second frame 113；On the other hand, positioning snap ring 114 can play the role of blocking and limit fixed sleeve 123, can when guaranteeing that fixing sleeve 123 is connected in positioning snap ring 114 So that fixing sleeve 123 is steadily socketed in the junction of first connecting rod 121 and second connecting rod 122, guarantees that stretcher is in running order When stability and convenience.

In addition, fixing sleeve 123 is fixed up by stretcher in non-working condition for convenience, prevent fixing sleeve 123 the It is arbitrarily slided on the hollow stem 111 of one frame 112, the outer surface of the hollow stem 111 of the first frame 112 can be arranged to circular cone Face, the vertex of a cone the second frame 113 of direction of the circular conical surface.When stretcher is in non-working condition, by fixing sleeve 123 slide into The conical surface of the hollow stem 111 of first frame 112 is fitted close, to realize the purpose for being fixed temporarily fixing sleeve 123.

Further, stretcher fixing sleeve 123 in use state slips away first connecting rod 121 and second connecting rod in order to prevent 122 junction, and then cause stretcher in running order, as shown in Fig. 2, can be in the hollow stem of the second frame 113 The affixed locating pin 115 of radial direction on 111 outer surface along hollow stem 111, and locating pin 115 is located at positioning snap ring 114 and fixes Between set 123, fixing sleeve 123 offers the open slot 1231 of L-type in the sleeve wall of one end of locating pin 115.In conjunction with Fig. 2 With shown in Fig. 3, fixing sleeve 123 is slided, enters locating pin 115 in open slot 1231, in rotation fixing sleeve 123, makes locating pin 115 enter the inner segment of open slots 1231, and under the withstanding effect of open slot 1231 and locating pin 115, fixing sleeve 123 can opposite the One frame 112 and the second frame 113 are fixed, prevent fixing sleeve 123 from sliding.

The opening that open slot 1231 is located at 123 end of fixing sleeve can also be arranged to horn-like, facilitate locating pin 115 Alignment enters in open slot 1231.

Locating pin 115 may also extend through hollow stem 111 and second connecting rod 122, and locating pin 115 and second connecting rod 122 It is threadedly coupled, the bonding strength of second connecting rod 122 and the second frame 113 can be further increased by locating pin 115 in this way.

As shown in figure 5, fixing piece 2 includes integrally formed skeleton interconnecting piece 21 and multifunctional module interconnecting piece 22, skeleton The axis of interconnecting piece 21 and multifunctional module interconnecting piece 22 is orthogonal, and skeleton interconnecting piece 21 is arranged and is fixed on skeleton 1, more Functional unit interconnecting piece 22 is towards ground, and the axis of multifunctional module interconnecting piece 22 and ground are in 45 ° of angles, multifunctional module Interconnecting piece 22, which offers mounting hole 221(along the direction of 22 axis of multifunctional module interconnecting piece on a side end face on ground, to be seen Fig. 7).

As shown in Figure 5 and Figure 6, multifunctional module 3 includes idler wheel 31 and supporting leg 32, and idler wheel 31 is vertically mounted on supporting leg 32 Intermediate position, the both ends of supporting leg 32 are respectively support end 321 and connecting pin 322, the end face of connecting pin 322 and the axis of supporting leg 32 In 45° angle, the end face of connecting pin 322 is bonded with the lower end surface of multifunctional module interconnecting piece 22, is arranged on the end face of connecting pin 322 There is installation bolt 3221, and supporting leg 32 can be rotated around installation bolt 3221, installation bolt 3221 and 221 screw thread of mounting hole connect It connects.

When needing fast removal patient, around installation 3221 turning legs 32 of bolt, make idler wheel 31 towards ground, in this way, It quickly and effortlessly patient can be carried on ambulance gives treatment to by idler wheel 31 when patient is on stretcher；Work as load When thering is the stretcher of patient to be located on ambulance, around installation 3221 turning legs 32 of bolt, make the support end 321 of supporting leg 32 towards ground Supporting leg 32 is placed on compartment ground by face later, can guarantee that stretcher keeps stablizing in ambulance in this way.

Universal wheel can be used in idler wheel 31, and the direction that such stretcher moves on the ground is easier to control.

As shown in figs. 1 and 4, the lower section of the end of the first frame 112 and the second frame 113 away from each other is connected with pull rod Set 116, drag link sleeve 116 are horizontality, naturally it is also possible to are arranged horizontal by certain angle, one end of drag link sleeve 116 It is socketed with elastic snap ring 117, is plugged with pull rod 118 on drag link sleeve 116.When not using pull rod 118, pull rod 118 is inserted into pull rod In set 116, and the long end of pull rod 118 is towards the inside of skeleton 1；When multifunctional module 3 switches to idler wheel 31 when being contacted with ground, Pull rod 118 is extracted out of drag link sleeve 116, is inserted into drag link sleeve 116 from outside to inside, then tightens elastic snap ring 117 and is drawn with fixed Bar 118 and drag link sleeve 116, the long end of pull rod 118 pulls pull rod 118,118 energy of pull rod from outside towards the outside of skeleton 1 at this time Enough skeleton 1 is driven to fast move on the ground.

Preferably, as shown in Figure 1, pull rod 118 includes the first pull rod 1181 and the second pull rod 1182, the first pull rod 1181 One end and 116 grafting of drag link sleeve, 1182 ball-joint of the other end and the second pull rod of the first pull rod 1181.In this way, the second pull rod 1182 and the first angle between pull rod 1181 it is adjustable, increase the comfort level of operation, more convenient staff passes through drawing Bar 118 pulls stretcher to fast move.

Further, as shown in figure 4, the lower section of drag link sleeve 116 is connected with support plate 119 by bolt, support plate 119 Upper surface offers support slot 1191, and the support slot 1191 is used to support and places pull rod 118.

The working process of this embodiment is as follows:

Skeleton 1 is opened: rotating two main frames 11 first and is at horizontality, it is sliding along hollow stem 111 again later Dynamic fixing sleeve 123, enters locating pin 115 in the open slot 1231 of fixing sleeve 123, and then rotating fixing sleeve 123 makes locating pin 115 enter the inner segment of open slots 1231 so that fixing sleeve 1231 and two main frames 11 are relatively fixed, at this time fixing sleeve 123 and Positioning snap ring 114 abuts, and the connecting portion of first connecting rod 121 and second connecting rod 122 is inside fixing sleeve 123, fixed in this way Set 123 can play a supporting role, and prevent first connecting rod 121 from hingedly rotating relative to second connecting rod 122, so that the bone of stretcher Frame 1 is in stable working condition.

When needing fast removal patient, around installation 3221 turning legs 32 of bolt, make idler wheel 31 towards ground, in this way, It quickly and effortlessly patient can be carried on ambulance gives treatment to by idler wheel 31 when patient is on stretcher；Work as load When thering is the stretcher of patient to be located on ambulance, around installation 3221 turning legs 32 of bolt, make the support end 321 of supporting leg 32 towards ground Supporting leg 32 is placed on compartment ground by face later, can guarantee that stretcher keeps stablizing in ambulance in this way.

Embodiment two:

As shown in fig. 7, a kind of fixing piece of stretcher, is used for connecting framework 1 and multifunctional module 3, including integrally formed The axis of skeleton interconnecting piece 21 and multifunctional module interconnecting piece 22, skeleton interconnecting piece 21 and multifunctional module interconnecting piece 22 hangs down mutually Directly, multi-functional interconnecting piece 22 include metal reinforced part 223(see Fig. 8) and parcel, metal reinforced part 223 be located in parcel Portion, metal reinforced part 223 and parcel offer mounting hole 221, mounting hole along the direction of 22 axis of multifunctional module interconnecting piece Screw thread is equipped in 221.By being arranged mounting hole 221 in metal reinforced part 223, can greatly enhance in mounting hole 221 Screw strength has achieved the purpose that increase 2 service life of fixing piece.

In conjunction with shown in Fig. 5 and Fig. 6, due to multifunctional module 3 can around installation bolt 3221 rotate, and switch supporting leg 32 or Person's idler wheel 31 is when being contacted with ground, it shall be guaranteed that multifunctional module 3 and fixing piece 2 are relatively fixed.Therefore, as shown in fig. 7, metal Reinforcing member 223 and parcel are also provided with fixation hole 222, the fixation hole along the direction of 22 axis of multifunctional module interconnecting piece 222 run through multifunctional module interconnecting piece 22, and fixation hole 222 is threaded with fastening bolt on the direction far from multifunctional module 3 225(is shown in Fig. 6).After tightening fastening bolt 225, fastening bolt 225 can push against the connecting pin 322 of supporting leg 32, to guarantee more It is relatively stable between functional unit 3 and fixing piece 2；After loosening fastening bolt 225, fastening bolt 225 is disconnected end 322, Supporting leg 32 can be rotated around installation bolt 3221, switched between idler wheel 31 and supporting leg 32, tightened fastening spiral shell after the completion of switching Bolt 225 can fix multifunctional module 3 and fixing piece 2 relatively.

As shown in fig. 7, can be connect integrally formed with skeleton between skeleton interconnecting piece 21 and multifunctional module interconnecting piece 22 The reinforcing rib 23 that portion 21 and multifunctional module interconnecting piece 22 connect, reinforcing rib 23 can reinforce skeleton interconnecting piece 21 and multi-functional group Bonding strength between part interconnecting piece 22.

Preferably, as shown in figure 8, metal reinforced part 223 includes the first cylinder 2231, the second cylinder 2232 and with first Cylinder 2231 and the integrally formed connecting plate 2233 of the second cylinder 2232, the first cylinder 2231 and the second cylinder 2232 are mutually equal Row, mounting hole 221 are located on the axis of the first cylinder 2231, and fixation hole 222 is located on the axis of the second cylinder 2232.Metal adds Firmware 223 uses this shape, and material can be saved in the case where proof strength, and connecting plate 2233 can also prevent the first circle Column 2231 and the second rotation inside parcel of cylinder 2232.

As shown in fig. 7, reducing the weight of fixing piece 2, skeleton interconnecting piece 21 is far from more function to save the material of parcel The intermediate position of energy component interconnecting piece 22 can be set in nick shaped, and multifunctional module interconnecting piece 22 is close to multifunctional module 3 One end face, which also can be set into, to be recessed inwardly.

Metal reinforced part 223 can be used stainless steel and be made, and plastics or carbon fiber can be used in skeleton interconnecting piece 21 and parcel Dimension is made.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (8)

1. a kind of stretcher, which is characterized in that comprising skeleton (1), canvas, four groups of fixing pieces (2) and four groups of multifunctional modules (3), Skeleton (1) is closed and is made of several rod pieces, and canvas binding and fixing are on skeleton (1)；Fixing piece (2) includes integrally formed Skeleton interconnecting piece (21) and multifunctional module interconnecting piece (22), the axis of skeleton interconnecting piece (21) and multifunctional module interconnecting piece (22) Line is orthogonal, and skeleton interconnecting piece (21) is arranged and is fixed on skeleton (1), multifunctional module interconnecting piece (22) towards ground, And the axis of multifunctional module interconnecting piece (22) and ground are in 45 ° of angles, multifunctional module interconnecting piece (22) close to ground one Direction on side end face along multifunctional module interconnecting piece (22) axis offers mounting hole (221)；Multifunctional module (3) includes Idler wheel (31) and supporting leg (32), idler wheel (31) are vertically mounted on the intermediate position of supporting leg (32), and the both ends of supporting leg (32) are respectively Support end (321) and connecting pin (322), the end face of connecting pin (322) and the axis of supporting leg (32) are in 45° angle, connecting pin (322) End face be bonded with the lower end surface of multifunctional module interconnecting piece (22), be provided with installation bolt on the end face of connecting pin (322) (3221), and supporting leg (32) can be rotated around installation bolt (3221), and installation bolt (3221) and mounting hole (221) screw thread connect It connects.

2. a kind of stretcher according to claim 1, which is characterized in that idler wheel (31) is universal wheel.

3. a kind of stretcher according to claim 1, which is characterized in that skeleton (1) includes two main frames (11) and two Connector (12), connector (12) are located between two main frames (11), and main frame (11) passes through two connector (12) connections Form the skeleton of stretcher；Connector (12) includes first connecting rod (121) and second connecting rod (122), first connecting rod (121) and second Connecting rod (122) can be relative to hingedly rotating；The end that two main frames (11) connect with connector (12) is hollow stem (111), First connecting rod (121) and second connecting rod (122) are inserted and secured on respectively in the hollow stem (111) of two main frames (11)；Even Fitting (12) further includes fixing sleeve (123), and fixing sleeve (123) is set on the outside of hollow stem (111), and fixing sleeve (123) is straight Diameter is greater than the diameter of first connecting rod (121) and second connecting rod (122).

4. a kind of stretcher according to claim 3, which is characterized in that under the end of two main frames (11) away from each other Side is connected with drag link sleeve (116), and one end of drag link sleeve (116) is socketed with elastic snap ring (117), and drag link sleeve is plugged on (116) Pull rod (118).

5. a kind of stretcher according to claim 4, which is characterized in that pull rod (118) includes the first pull rod (1181) and the Two pull rods (1182), one end of the first pull rod (1181) and drag link sleeve (116) grafting, the other end of the first pull rod (1181) and the Two pull rods (1182) ball-joint.

6. a kind of stretcher according to claim 3, which is characterized in that connector (12) also includes hinged block (124), hingedly Block (124) is located between first connecting rod (121) and second connecting rod (122), and first connecting rod (121) and second connecting rod (122) point It is not hinged with hinged block (124).

7. a kind of stretcher according to claim 6, which is characterized in that two main frames (11) are divided into the first frame (112) With the second frame (113), fixing sleeve (123) is set on the hollow stem (111) of the first frame (112), the second frame (113) It being arranged on hollow stem (111) positioning snap ring (114), the outer diameter of positioning snap ring (114) is greater than the internal diameter of fixing sleeve (123), the One frame (112) and the second frame (113) are connect with first connecting rod (121) and second connecting rod (122) respectively.

8. a kind of stretcher according to claim 7, which is characterized in that hollow stem (111) outer surface of the second frame (113) It is radially connected with locating pin (115), locating pin (115) is located between positioning snap ring (114) and fixing sleeve (123), fixing sleeve (123) open slot (1231) of L-type is offered in one end sleeve wall of locating pin (115).