Connecting structure of main body frame and base in aviation transfer system

Abstract

The utility model discloses a connecting structure of a main body frame and a base in an aviation transfer system, which is characterized in that a plurality of rear positioning beams are sequentially mounted at the top of the base at intervals from front to back, and a plurality of positioning pins are sequentially mounted on each rear positioning beam at intervals along the length direction of the rear positioning beam; a plurality of front positioning beams are sequentially installed at the bottom of a bottom plate of the main body frame from front to back at intervals, and a plurality of positioning holes are sequentially formed in the rear side wall of each front positioning beam in the length direction of the front positioning beam at intervals. The front positioning beams in the main body frame placed on the base are backwards propped against the corresponding rear positioning beams of the base respectively, and the positioning pins of the rear positioning beams are correspondingly inserted into the corresponding positioning holes of the corresponding front positioning beams; a locking assembly is arranged on the rear side of at least one front positioning beam in the main body frame, the locking assembly and the corresponding front positioning beam can clamp the corresponding rear positioning beam of the base in a front-back opposite mode, and therefore the main body frame is positioned, installed and fixed to the base. The utility model has the advantage of convenient assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation transfer technical field, concretely relates to the connecting structure of main body frame and base in aviation transfer system. BACKGROUND

[0002] At present, the aviation transfer system equipped in large aircraft and small aircraft for transferring the wounded or patients is generally composed of a base, a main body frame and a stretcher which are welded and fixed as a whole. The aviation transfer system welded as a whole has the following shortcomings: the main body frame and the base are welded and fixed as a whole, and it is extremely inconvenient to disassemble and maintain.

[0003] For small aircraft such as Cessna Citation, Gulfstream G650, Bombardier Global 7500, etc., the size (height, width, depth) of the cabin door entrance is relatively small. Since the length of the main body frame of the integrated aviation transfer system is greater than the depth of the cabin door entrance of the small aircraft, the main body frame cannot be directly carried into the interior of the civil aircraft and private aircraft, and therefore when the aviation transfer system is configured in the small aircraft, each component constituting the main body frame, such as the cross beam, the column and the longitudinal beam, has to be carried into the interior of the small aircraft one by one, and then the main body frame is assembled and welded in the interior of the small aircraft, and the main body frame, the base and the stretcher are welded and fixed, which is time-consuming and laborious. SUMMARY

[0004] The utility model aims at providing a connecting structure of main body frame and base in aviation transfer system which can quickly assemble or separate the main body frame and the base.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the connecting structure of main body frame and base in aviation transfer system, comprising: a plurality of rear positioning beams are installed on the top of the base in sequence from front to back along the length direction and are spaced apart, each rear positioning beam is arranged in left-right direction, and a plurality of positioning pins protruding from the front side wall of each rear positioning beam are installed on the rear positioning beam in sequence from front to back along the length direction; a plurality of front positioning beams corresponding to the rear positioning beams are installed on the bottom of the bottom plate of the main body frame in sequence from front to back, and a plurality of positioning holes corresponding to the positioning pins are arranged on the rear side wall of each front positioning beam in sequence from front to back along the length direction; each front positioning beam in the main body frame on the base abuts against the corresponding rear positioning beam of the base, and the positioning pins of each rear positioning beam are inserted into the corresponding positioning hole of the corresponding front positioning beam; a locking assembly is arranged on the rear side of at least one front positioning beam in the main body frame, the locking assembly can clamp the corresponding rear positioning beam of the base in front-rear opposite state, so as to position and fix the main body frame on the base.

[0006] Further, the connection structure of the main frame and the base in the aforementioned air transfer system, wherein: the structure of the locking assembly comprises: a lock head access hole is arranged on the bottom plate of the main frame, a pin seat is fixed on the top of the bottom plate at the lock head access hole, a horizontal plate extending to the top of the lock head access hole is arranged on the pin seat, a through hole corresponding to the lock head access hole is arranged on the horizontal plate, a turnover block is arranged on the pin seat, the middle part of the turnover block is hinged to the pin seat through a pin shaft, a pressing rod is connected to the end of the turnover block away from the horizontal plate, a waist hole penetrating the turnover block upward and downward and corresponding to the through hole of the horizontal plate is arranged on the end of the turnover block close to the horizontal plate, a screw rod is arranged in the waist hole, the upper end of the screw rod extends out of the turnover block from the waist hole and is fixed with a positioning nut with a larger caliber than the width of the waist hole, the lower end of the screw rod is fixed with a lock head aligned with the lock head access hole after sequentially passing through the waist hole and the through hole of the horizontal plate downward, a first elastic member is arranged between the horizontal plate and the lock head, the upper end of the first elastic member abuts against the horizontal plate upward and the lower end abuts against the lock head downward, the lock head extends out of the bottom plate downward from the lock head access hole under the elastic force of the first elastic member, so that the lock head and the corresponding front positioning beam are in front and back opposite state to clamp the corresponding base rear positioning beam, thereby positioning and installing the main frame to the base.

[0007] Further, the connection structure of the main frame and the base in the aforementioned air transfer system, wherein: the front end of the lock head is provided with a slope gradually inclined downward from back to front.

[0008] Further, the connection structure of the main frame and the base in the aforementioned air transfer system, wherein: a limiting baffle is fixed on the screw rod above the lock head, the limiting baffle is located between the horizontal plate and the bottom plate of the base, and the caliber of the limiting baffle is larger than the caliber of the lock head access hole of the bottom plate of the base, and when the lock head completely extends out of the bottom plate downward from the lock head access hole under the elastic force of the first elastic member to cooperate with the corresponding front positioning beam to clamp the corresponding base rear positioning beam, the limiting baffle is just pressed downward on the bottom plate.

[0009] Further, the connection structure of the main frame and the base in the aforementioned air transfer system, wherein: the main frame is composed of at least two independent sub-frames connected and fixed in sequence front and back through a connecting mechanism.

[0010] Further, the connecting structure of the main frame and the base in the aforementioned air transfer system, wherein: the structure of the connecting mechanism comprises: a vertical T-shaped sliding groove and a vertical T-shaped sliding block are respectively arranged at the abutting end of the adjacent two sections of the split frame, and the adjacent two sections of the split frame are connected together by the sliding fitting of the T-shaped sliding groove and the T-shaped sliding block; a positioning cross beam is further arranged at the abutting end of the adjacent two sections of the split frame, a positioning insertion hole is arranged on the positioning cross beam of one split frame, a front and back running pull rod is arranged in the other split frame, one end of the pull rod is fixed with a handle, the other end of the pull rod is fixed with a plug aligned with the positioning insertion hole and protrudes from the positioning cross beam of the split frame, and a second elastic member is arranged between the plug and the positioning cross beam of the split frame, and the plug always has the tendency to be inserted into the positioning insertion hole of the other split frame to connect and fix the adjacent two sections of the split frame under the elastic force of the second elastic member.

[0011] Through the implementation of the technical scheme, the beneficial effects of the air transfer system are: (1) the main frame and the base are quickly assembled and disassembled, and the use is extremely convenient; (2) the main frame adopts a segmented structure which can be quickly disassembled and assembled, so that not only the disassembly and assembly are extremely convenient, but also the small aircraft can also be quickly equipped with the air transfer system after the main frame is divided into several sections and the sections of the main frame can smoothly enter the interior of the aircraft through the entrance for quick assembly. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the connecting structure of the main frame and the base in the air transfer system.

[0013] Figure 2 It is a left view. Figure 1

[0014] Figure 3 It is an A-A sectional view in the figure. Figure 2

[0015] Figure 4 It is an enlarged schematic view of the C part shown in the figure. Figure 3

[0016] Figure 5 It is a structural schematic view of the locking assembly.

[0017] Figure 6 It is an exploded view of the locking assembly.

[0018] Figure 7 It is a B-B sectional view in the figure. Figure 2

[0019] Figure 8 It is an enlarged schematic view of the D part shown in the figure. Figure 7 ​​​​​

[0020] Figure 9 is a perspective view of the base. Figure 1

[0021] Figure 10 is a perspective view of the base.

[0022] Figure 11 is a perspective view of the main body frame.

[0023] Figure 12 is a perspective view of the front sub-frame in the main body frame.

[0024] Figure 13 is a perspective view of the rear sub-frame in the main body frame. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will make further detailed description to the utility model by combining with the drawings and examples.

[0026] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 ​As shown, the connecting structure of the main frame and the base in the air transfer system comprises: a plurality of rear positioning beams 17 are installed on the top of the base 1 in sequence from front to back along the length direction, each of the rear positioning beams 17 is arranged in left-right direction, and a plurality of positioning pins 18 protruding from the front side wall of each rear positioning beam 17 are installed in sequence along the length direction of the rear positioning beam 17; the top of the main frame 2 is provided with a stretcher placing platform 5, a plurality of front positioning beams 19 corresponding to the rear positioning beams 17 of the base are installed in sequence from front to back on the bottom of the bottom plate 33 of the front sub-frame 8 and the bottom plate 33 of the rear sub-frame 9 of the main frame 2 respectively, a plurality of positioning holes 20 corresponding to the positioning pins 18 are arranged in sequence on the rear side wall of each front positioning beam 19 along the length direction of the front positioning beam 19; each front positioning beam 19 on the bottom of the rear sub-frame 9 and each front positioning beam 19 on the bottom of the front sub-frame 8 of the main frame 2 abut against the corresponding rear positioning beam 17 at the corresponding position of the base 1 respectively, and each positioning pin 18 on each rear positioning beam 17 is inserted into the corresponding positioning hole of the corresponding front positioning beam, the up-down direction and the left-right direction of the main frame 2 on the base 1 are effectively limited by the position cooperation of each front positioning beam 19 of the main frame 2 and the rear positioning beam 17 of the base and the plug-in cooperation of each positioning hole 20 of each front positioning beam 19 and each positioning pin 18 on the rear positioning beam 17 of the base 1; a locking assembly 21 is arranged on the rear side of at least one front positioning beam in the main frame, the locking assembly 21 can clamp the corresponding rear positioning beam 17 of the base in front-rear opposite state with the corresponding front positioning beam 19, and the cooperation of the locking assembly 21 and the front positioning beam 19 can limit the front-rear position of the main frame 2 on the base, since the up-down direction and the left-right direction of the main frame 2 on the base 1 are effectively limited by the position cooperation of each front positioning beam 19 of the main frame 2 and the rear positioning beam 17 of the base and the plug-in cooperation of each positioning hole 20 of each front positioning beam 19 and each positioning pin 18 on the rear positioning beam 17 of the base 1, and the front-rear position of the main frame 2 on the base is effectively limited by the cooperation of the locking assembly 21 and the front positioning beam 19, so that the main frame 1 is positioned and fixed on the base.

[0027] In the embodiment, the locking assembly 21 is arranged on the rear side of the front positioning beam 19 located at the foremost end of the front sub-frame 8 of the main frame 2; the structure of the locking assembly comprises: a lock head access hole is arranged on the bottom plate of the front sub-frame 8 of the main frame 2, a pin seat 22 is fixed on the top of the bottom plate at the lock head access hole, a horizontal plate 23 extending to the top of the lock head access hole is arranged on the pin seat 22, a through hole corresponding to the lock head access hole is arranged on the horizontal plate 23, a turnover block 24 is arranged on the pin seat 22, the middle part of the turnover block 24 is hinged to the pin seat 22 through a pin shaft 25, a pressing rod 26 is connected to the end of the turnover block away from the horizontal plate 23, a waist hole 27 penetrating the turnover block 24 upward and downward and corresponding to the horizontal plate through hole downward is arranged on the end of the turnover block close to the horizontal plate 23, a screw rod 28 is arranged in the waist hole 27, the upper end of the screw rod 28 extends out of the turnover block 24 from the waist hole 27 and is fixed with a positioning nut 29 with a larger caliber than the width of the waist hole, the lower end of the screw rod 28 is sequentially fixed with a lock head 30 aligned with the lock head access hole after passing through the waist hole 27 and the horizontal plate through hole downward, a first elastic member is arranged between the horizontal plate 23 and the lock head 30, the first elastic member is a first spring 31, the upper end of the first spring 31 abuts against the horizontal plate 23 upward and the lower end abuts against the lock head 30 downward, the lock head 30 extends out of the bottom plate 33 downward from the lock head access hole under the elastic force of the first spring 31, so that the lock head 30 and the corresponding front positioning beam 19 are in front and back opposite state to clamp the corresponding base rear positioning beam 17, thereby positioning and fixing the main frame 2 to the base 1.

[0028] In the embodiment, a limiting baffle 60 is fixed on the screw rod 28 above the lock head 30, the limiting baffle 60 is located between the horizontal plate 23 and the base bottom plate 33, and the caliber of the limiting baffle 60 is larger than the caliber of the lock head access hole of the base bottom plate 33, so that when the lock head 30 completely extends out of the bottom plate 33 downward from the lock head access hole under the elastic force of the first spring 31 to cooperate with the corresponding front positioning beam 19 to clamp the corresponding base rear positioning beam 17, the limiting baffle 60 is just pressed downward on the bottom plate 33; without the limiting baffle 60, the downward limiting of the lock head 30 only relies on the positioning nut 29, which is easy to loosen and fall off due to continuous collision with the turnover block 24, and if the positioning nut 29 falls off, the lock head 30 will fall from the lock head access hole of the base bottom plate 33, the embodiment can avoid the lock head 30 from falling from the lock head access hole of the base bottom plate 33 by adding the limiting of the limiting baffle 60, thereby improving the stability and safety in use;

[0029] In the embodiment, the front end of the lock head 30 is provided with a slope 32 which gradually inclines downward from back to front. During the process of moving the main frame 2 on the base 1 rearward to the position where each front positioning beam 17 abuts against each rear positioning beam 17, the lock head 30 of the locking assembly 21 will first contact the rear positioning beam 17 of the corresponding base 1. At this time, the lock head 30 will gradually overcome the elastic force of the first spring 31 and automatically move upward by the slope 32 of the lock head 30 contacting the corresponding rear positioning beam 17. When the lock head 30 moves rearward with the main frame 2 to the position where the lock head 30 is completely located behind the corresponding rear positioning beam 17, the lock head 30 will extend downward from the lock head entry and exit hole to the bottom plate 33 under the elastic force of the first spring 31, so that the lock head 30 and the corresponding front positioning beam 19 are in front and back relative state to clamp the corresponding rear positioning beam 17 of the base, thereby positioning and installing and fixing the main frame 2 on the base 1. Through the design of the slope 32 of the lock head 30, the worker does not need to manually unlock the lock head 30 to move it upward during the process of moving the main frame 2 rearward along the base 1 and locking it on the base 1. The lock head 30 will automatically move upward to smoothly lock the main frame 2 on the base, which is more convenient to operate.

[0030] In the embodiment, the main frame 2 adopts a split structure, and the main frame 2 is formed by sequentially connecting and fixing at least two independent split frames. In actual application, the number of split frames constituting the main frame 2 can be arbitrarily configured according to actual installation conditions. Each two adjacent split frames are connected and fixed by a connecting mechanism, and the connecting mechanisms between each two adjacent split frames are the same in structure.

[0031] In the embodiment, as shown in Figure 12 , Figure 13As shown, the main body frame 2 is formed by two independent split frames spliced in sequence from front to back. In order to more clearly explain the utility model, the split frame located at the front side is defined as the front split frame 8, and the split frame located at the rear side is defined as the rear split frame 9. The structure of the connecting mechanism for connecting and fixing the front split frame 8 and the rear split frame 9 is as follows: T-shaped sliding grooves 6 are vertically arranged on the left and right sides of the rear end of the front split frame 8, T-shaped sliding blocks 7 corresponding to the T-shaped sliding grooves 6 are vertically arranged on the left and right sides of the front end of the rear split frame 9, the T-shaped sliding grooves 6 of the front split frame 8 are slidably fitted with the T-shaped sliding blocks 7 of the rear split frame 9, the front split frame 8 and the rear split frame 9 are connected together by the slidable fitting of the T-shaped sliding grooves 6 and the T-shaped sliding blocks 7, the front split frame 8 and the rear split frame 9 are limited in the front-rear direction and the left-right direction by the cooperation of the T-shaped sliding grooves 6 and the T-shaped sliding blocks 7, a positioning cross beam is arranged at the rear end of the front split frame 8 and the front end of the rear split frame 9, in order to more clearly explain the utility model, the positioning cross beam at the rear end of the front split frame 8 is defined as the rear positioning cross beam 10, and the positioning cross beam at the front end of the rear split frame 9 is defined as the front positioning cross beam 11, a positioning insertion hole 12 is arranged on the front positioning cross beam 11 of the rear split frame 9, a front-rear running pull rod 13 is arranged in the front split frame 8, the front end of the pull rod 13 protrudes forward from the front split frame 8 and is fixed with a pull handle 14, the rear end of the pull rod 13 protrudes from the rear positioning cross beam 10 at the rear end of the front split frame 8 and is fixed with a plug 15 aligned with the positioning insertion hole 12, a second elastic member is arranged between the plug 15 and the rear positioning cross beam 10 of the front split frame 8, in this embodiment, the second elastic member is a second spring 16, the plug 15 always has a tendency to move backward and insert into the positioning insertion hole 12 to connect and fix the front split frame 8 and the rear split frame 9 under the elastic force of the second spring 16; when the pull rod 13 is not subjected to external force, the plug 15 will move backward and insert into the positioning insertion hole 12 under the elastic force of the second spring 16, after the plug 15 is inserted into the positioning insertion hole 12, the cooperation of the plug 15 and the positioning insertion hole 12 limits the front split frame 8 and the rear split frame 9 in the up-down direction, since the front split frame 8 and the rear split frame 9 are limited in the front-rear direction and the left-right direction by the cooperation of the T-shaped sliding grooves 6 and the T-shaped sliding blocks 7, and the front split frame 8 and the rear split frame 9 are limited in the up-down direction by the cooperation of the plug 15 and the positioning insertion hole 12, the front split frame 8 and the rear split frame 9 are connected and fixed together; when it is needed to separate the front split frame 8 and the rear split frame 9, first hold the pull handle 14 and pull the pull rod 13 outward, so that the plug 15 is separated from the positioning insertion hole 12 of the front positioning cross beam 11 of the rear split frame 9, then pull the front split frame 8 or the rear split frame 9 upward, so that the T-shaped sliding grooves 6 of the front split frame 8 are separated from the T-shaped sliding blocks of the rear split frame 9, that is, the separation operation of the front split frame 8 and the rear split frame 9 is completed.

[0032] When the air transfer system needs to be assembled in a large aircraft or a small aircraft, the base 1, the front and rear split frames 8 and 9 of the main frame 2, the stretcher 4, the stand 49 and the shelf 50 can be separately moved into the aircraft from the aircraft entrance;

[0033] The specific steps for connecting and assembling the main frame and the base in the large aircraft or the small aircraft are as follows:

[0034] First, the front split frame 8 and the rear split frame 9 are assembled into the main frame. The specific operation process is as follows: first, hold the pull handle 14 of the front split frame 8 and pull the pull rod 13 outward, so that the plug 15 of the pull rod 13 is retracted into the rear positioning beam 10, then the T-shaped slider 7 at the front end of the rear split frame 9 is slidably inserted into the corresponding T-shaped sliding slot 6 at the rear end of the front split frame 8, when the rear split frame 9 moves up and down relative to the front split frame 8 to align the positioning plug hole 12 on the front positioning beam 11 with the plug 15, the external force applied to the pull handle 14 is removed, at this time the plug 15 will move backward under the elastic force of the second spring 16 and be inserted into the positioning plug hole 12, thereby completing the assembly of the front split frame 8 and the rear split frame 9.

[0035] Then the main frame 2 is assembled on the base 1. The specific operation process is as follows: the front and rear positioning beams 19 at the bottom of the main frame 2 are placed on the base 1 in front of and behind the rear positioning beams 17 at the top of the base 1, then the main frame 2 is moved backward, the front positioning beams 19 at the bottom of the main frame 2 are respectively abutted on the corresponding rear positioning beams 17 at the corresponding positions of the base 1, and the positioning pins 18 on the rear positioning beams 17 are respectively inserted into the corresponding positioning holes of the front positioning beams, during the movement of the main frame 2 on the base 1, the lock head 30 of the locking assembly 21 will first contact the rear positioning beam 17 of the corresponding base 1, at this time the lock head 30 will gradually overcome the elastic force of the first spring 31 and move upward automatically by contacting the corresponding rear positioning beam 17 through the inclined surface 32 of the lock head 30, until the lock head 30 is completely located behind the corresponding rear positioning beam 17 when the main frame 2 moves backward, at this time the lock head 30 will extend downward from the lock head entry and exit hole to the bottom plate 33 under the elastic force of the first spring 31, so that the lock head 30 and the corresponding front positioning beam 19 are in front and rear relative state to clamp the corresponding rear positioning beam 17 of the base, thereby positioning and fixing the main frame 2 on the base 1.

[0036] When the air transfer system needs to be disassembled, the specific operation of separating the main frame 2 from the base 1 is as follows: press the pressing rod 26 of the locking assembly 21 at the front end of the main frame 2 downward, drive the turnover block to turn over by pressing the pressing rod 26 downward, synchronously drive the screw rod 28 and the lock head 30 to move upward to retract the lock head out of the hole against the elastic force of the first spring 31, after the lock head 30 moves upward to retract the lock head out of the hole, the locking assembly 21 is no longer limited to the front and rear positions of the main frame 2, at this time the main frame 2 can be moved forward relative to the base 1, then the main frame 2 is moved forward, the positioning holes 20 of the front positioning beams 19 in the main frame 2 are separated from the positioning pins 18 on the rear positioning beams 17 in the base 1, so that the main frame 2 is separated from the base 1.

[0037] The utility model has the advantages of (1) the main frame and the base are quickly assembled and disassembled, and the use is extremely convenient; (2) the main frame adopts the segmented structure that can be quickly disassembled and assembled, not only is the disassembly and assembly extremely convenient, but also after the main frame is divided into several small segments, the main frame can be smoothly entered into the inside of the aircraft through the entrance to be quickly assembled, and then the small aircraft can also be quickly equipped with the air transfer system.

[0038] The above only describes the preferred embodiment of the utility model, and does not limit the utility model in any other form, and any modification or equivalent change according to the technical essence of the utility model still belongs to the protection range of the utility model.

Claims

1. A connecting structure of a main frame and a base in an air transfer system, characterized by: The application relates to a positioning and locking device for a main body frame. The structure of the locking assembly comprises: a lock head access hole is arranged on the bottom plate of the main body frame; a pin seat is fixed on the top of the bottom plate at the lock head access hole; a horizontal plate extending to the top of the lock head access hole is arranged on the pin seat; a through hole corresponding to the lock head access hole is arranged on the horizontal plate; a turnover block is arranged on the pin seat; the middle part of the turnover block is hinged to the pin seat through a pin shaft; a pressing rod is connected to the end of the turnover block far from the horizontal plate; a waist hole penetrating the turnover block upwards and downwards and corresponding to the through hole of the horizontal plate is arranged on the end of the turnover block close to the horizontal plate; a screw rod is arranged in the waist hole; the upper end of the screw rod extends upwards from the waist hole and is fixed with a positioning nut with a larger caliber than the waist hole; the lower end of the screw rod is fixed with a lock head corresponding to the lock head access hole after sequentially penetrating the waist hole and the through hole of the horizontal plate downwards; a first elastic member is arranged between the horizontal plate and the lock head; the upper end of the first elastic member abuts against the horizontal plate upwards, and the lower end of the first elastic member abuts against the lock head downwards; the lock head extends downwards from the lock head access hole to the bottom plate under the elastic force of the first elastic member, so that the lock head and the corresponding front positioning beam clamp the corresponding rear positioning beam of the base, thereby positioning and fixing the main body frame on the base.

2. The main body frame and base connecting structure of the aerial transfer system according to claim 1, characterized in that: The front end of the lock head is provided with a slope gradually inclined downwards from the rear to the front.

3. The main body frame and base connecting structure of the aerial transfer system according to claim 2, characterized in that: A limiting baffle is fixed on the screw rod above the lock head; the limiting baffle is located between the horizontal plate and the bottom plate of the base, and the caliber of the limiting baffle is larger than that of the lock head access hole of the bottom plate of the base; and when the lock head extends downwards from the lock head access hole to the bottom plate under the elastic force of the first elastic member to clamp the corresponding rear positioning beam of the base with the corresponding front positioning beam, the limiting baffle is just pressed downwards on the bottom plate.

4. The main body frame and base connecting structure of the aerial transfer system according to claim 2, characterized in that: The main body frame is composed of at least two independent split frames which are sequentially connected and fixed through a connecting mechanism.

5. The main body frame and base connecting structure of the aerial transfer system according to claim 1 or 2 or 3 or 4, characterized in that: ​ 6. The main body frame and base connecting structure of the air transfer system according to claim 5, characterized in that: The structure of the connecting mechanism comprises: a vertical T-shaped sliding groove and a vertical T-shaped sliding block are respectively arranged at the abutting end of two adjacent sections of the split frame, and the two adjacent sections of the split frame are connected together by sliding and fitting of the T-shaped sliding groove and the T-shaped sliding block; a positioning cross beam is further arranged at the abutting end of the two adjacent sections of the split frame, a positioning socket is arranged on the positioning cross beam of one of the split frames, a front-to-back running pull rod is arranged in the other split frame, one end of the pull rod is fixed with a handle, the other end of the pull rod extends out of the positioning cross beam of the split frame and is fixed with a plug which is aligned with the positioning socket, a second elastic member is arranged between the plug and the positioning cross beam of the split frame, and the plug always has a tendency to be inserted into the positioning socket of the other split frame to connect and fix the two adjacent sections of the split frame under the elastic force of the second elastic member.

Images