Power-assisted forward conveying device with waistcoat and rescue box

Abstract

The power-assisted forward conveying device comprises a main body frame, a battery bin, expansion frames and the waistcoat, one end of the battery bin is fixedly connected with the main body frame, the other three ends of the battery bin are all provided with the expansion frames capable of being unfolded or folded so as to enlarge the bearing area of the battery bin when needed, the waistcoat comprises straps and a waistband, and the waistcoat is arranged on the back of the battery bin. The front side wall of the waist belt is detachably connected with a blocking belt, a cavity is formed between the blocking belt and the waist belt, the front side wall of the blocking belt is provided with a plurality of isolation columns which are distributed in a staggered mode, and the middle of the rear side wall of the waist belt is provided with a quick connector which can be connected with a plug in an inserted mode. A plurality of air bags distributed in parallel are detachably connected to the portion, corresponding to the quick-plug connector, of the front side wall of the waistband, an expansion frame is designed at the edge of the battery bin and can be unfolded or folded, when the bearing area of the battery bin needs to be expanded, only the expansion frame needs to be unfolded, and when the expansion frame is not needed, the expansion frame is folded and folded. Through the design, the bearing area of the battery compartment is expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of single-person assisted transportation, and in particular to an assisted forward delivery device with a vest and a rescue box. Background Art

[0002] With the development of technology, in some occasions where it is impossible to transport items with the help of tools such as vehicles and single-person transportation is required (such as some earthquake rescue sites, areas with complex terrain, and some areas with damaged road conditions), in order to save physical strength, a single-person assisted forward delivery device has been developed. The assisted forward delivery device realizes human-machine connection through a harness system (vest). Specifically, a quick-release connector is installed at the waistband of the back vest for mating with the plug in the single-person assisted forward delivery device to achieve plugging. In this way, the traction force of the assisted forward delivery device itself is used to cooperate with the single person to walk, and the item is placed on the assisted forward delivery device to transport the item to the designated position.

[0003] In the existing single-person assisted forward delivery device, the area of the battery compartment is limited, resulting in the problem that when transporting some larger-sized items, it is likely to tilt and fall due to the small bearing area, thus affecting the forward speed, that is, affecting the transportation speed of the item. And the quick-release connector on the vest is plugged into the plug. Since the quick-release connector is relatively hard, it is directly in contact with the human back when installed on the waistband, which is likely to cause discomfort in the back and poor use comfort.

[0004] Therefore, there is an urgent need for an assisted forward delivery device with a vest and a rescue box to solve the above technical problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem that the area of the battery compartment in the existing single-person assisted forward delivery device is limited, resulting in the problem that when transporting some larger-sized items, it is likely to tilt and fall due to the small bearing area, thus affecting the forward speed, that is, affecting the transportation speed of the item; and the quick-release connector on the vest is plugged into the plug. Since the quick-release connector is relatively hard, it is directly in contact with the human back when installed on the waistband, which is likely to cause discomfort in the back and poor use comfort.

[0006] For this purpose, the present invention provides an assisting front delivery device with a vest and a rescue box, comprising a main body frame, a battery compartment, an extension frame, a vest and a rescue box. The battery compartment is of a cuboid structure. One end of the battery compartment is fixedly connected to the main body frame. A plug is fixed at the end of the main body frame away from the battery compartment. The other three ends of the battery compartment are each provided with an extension frame that can be expanded or retracted to enlarge the bearing area of the battery compartment when needed. The battery compartment and the main body frame are respectively provided with perforated supports. Handles are respectively fixed on the two side walls of the rescue box. The rescue box is placed on the battery compartment and fixed by tying it to the supports and the handles with straps. The vest comprises a shoulder strap and a waistband. The shoulder strap comprises a front shoulder strap and a rear shoulder strap that are spliced with each other. The waistband is fixed at the bottom end of the rear shoulder strap. A barrier strap is detachably connected to the front side wall of the waistband. A cavity is provided between the barrier strap and the waistband. A plurality of staggered and elastic isolation columns are arranged on the front side wall of the barrier strap. A quick plug connector that can be plugged into the plug is installed at the middle part of the rear side wall of the waistband. A plurality of side-by-side distributed air bags are detachably connected to the corresponding part of the front side wall of the waistband, and the air bags are located in the cavity.

[0007] In the specific embodiment of the above-mentioned assisting front delivery device with a vest and a rescue box, the extension frame provided at the end of the battery compartment opposite to the main body frame is the first extension frame. Connecting frames are respectively fixed on the other two opposite side walls of the battery compartment. The first extension frame is connected to the two connecting frames and can move telescopically relative to the battery compartment to realize the expansion or retraction of the first extension frame. The extension frames provided at the other two opposite ends of the battery compartment are both second extension frames. The second extension frames are connected to the adjacent connecting frames and can be folded to the bottom of the battery compartment or expanded to extend the bearing surface of the battery compartment.

[0008] In the specific embodiment of the above-mentioned assisting front delivery device with a vest and a rescue box, the first extension frame is in a U shape. The two side rods of the first extension frame are respectively inserted into different connecting frames and can move horizontally relative to them to realize the expansion or retraction of the first extension frame relative to the battery compartment. A locking component is fixed at the end of each connecting frame away from the main body frame. The locking component is set to be able to lock the expanded state or retracted state of the first extension frame to prevent it from moving; and / or The second extension frame is in a U shape. Two end parts of the second extension frame are respectively connected to the connecting frame through a 90° folding locking member. The 90° folding locking member includes a U-shaped second fixing seat, a turning block and a first positioning pin. The second fixing seat is fixed on the connecting frame. The turning block is located inside the second fixing seat, one end of which is rotatably connected to the second fixing seat, and the other end is fixedly connected to an end of a side rod of the second extension frame. The second extension frame can be folded at the bottom of the battery compartment or unfolded to expand the bearing surface of the battery compartment with the turning movement of the turning block, and is locked on the second fixing seat through the first positioning pin.

[0009] In the specific embodiment of the power-assisted forward delivery device with a vest and a rescue box, the locking assembly includes a first fixing seat, a limit pin and an operating rod. The first fixing seat is fixedly connected to the corresponding connecting frame. A groove is formed at the bottom end of the first fixing seat. The side wall of the groove away from the connecting frame is an open structure. The operating rod includes a driving block and an operating handle. The driving block is located in the groove and is rotatably connected to the first fixing seat. The bottom end of the operating handle is inserted into the groove from the opening part and is fixedly connected to the driving block. The limit pin is located in the groove and a spring is sleeved on the limit pin. The bottom end of the limit pin cooperates with the driving block so that the limit pin can move up and down under the combined action of the spring and the driving block to penetrate into the first extension frame or be pulled out of the first extension frame during the rotation of the driving block driven by the operating handle.

[0010] In the specific embodiment of the power-assisted forward delivery device with a vest and a rescue box, a transition groove capable of inserting the limit pin is provided on the top surface of the driving block. Slide openings communicating with the transition groove are provided on the front and rear walls of the driving block. The top surface inside the slide openings is an arc-shaped slideway surface, and the distance between the slideway surface and the rotation fulcrum of the driving block gradually increases in the clockwise direction. A sliding column is fixed to the bottom end of the limit pin. The sliding column is located in the transition groove, and both ends of the sliding column are respectively inserted into the corresponding slide openings and are in a fitting state with the slideway surface under the action of the spring, so that the sliding column drives the limit pin to move up and down under the action of the slideway surface track during the rotation of the driving block.

[0011] In the specific embodiment of the power-assisted forward delivery device with a vest and a rescue box, the rescue box includes a box body and a box cover. The top end of the box body is an open structure. The box cover is buckled on the top end of the box body to seal the opening. A plurality of uniformly distributed first positioning members are provided on the outer wall of the top end of the box cover. Second positioning members corresponding to and cooperating with the first positioning members are provided on the outer wall of the bottom end of the box body. A plurality of anti-shift blocks are provided on the handle at equal intervals along the length direction of the handle.

[0012] In the specific implementation manner of the assisted forward delivery device with a vest and a rescue box, the assisted forward delivery device further includes support feet, the support feet are connected to one end of the battery compartment away from the main frame, the support feet are arranged to be able to expand relative to the battery compartment to support one end of the battery compartment away from the main frame or fold at the bottom of the battery compartment, and in the expanded state, jointly support the battery compartment with the main frame so that its bearing surface can be in a horizontal placement state.

[0013] In the specific implementation manner of the assisted forward delivery device with a vest and a rescue box, the airbag is detachably connected to the front side wall of the waist belt by Velcro, the airbag is provided with an outwardly protruding inflation port, and the rear side wall of the back strap is provided with a receiving pocket for storing the excess airbag and a transparent label pocket for placing label paper.

[0014] In the specific implementation manner of the assisted forward delivery device with a vest and a rescue box, the quick-release joint includes a housing, a turntable, two clamping rods and a driver, the turntable is rotatably connected in the housing, the clamping rods are in an arc shape, one ends of the two clamping rods are respectively rotatably connected to two symmetrical positions on the turntable so that the two clamping rods can be docked to form a closed clamping hole or separated to open the clamping hole during rotation, one end of the clamping rod rotatably connected to the turntable is connected to the housing through a spring, the two clamping rods are in a docked state under the action of the spring, the driver is installed on the waist belt and connected to the turntable, and the driver is arranged to be able to drive the turntable to rotate in the direction of spring compression.

[0015] In the specific implementation manner of the assisted forward delivery device with a vest and a rescue box, the driver includes a pull rope, a sleeve and a hook, one end of the pull rope extends into the housing and is fixedly connected to the turntable to rotate the turntable through the pulling action of the pull rope, the sleeve is sleeved on the pull rope and one end of it is connected to the housing, a magnetic suction cup is fixed to the other end of the sleeve, a positioning disk capable of adsorbing to the magnetic suction cup is fixed to the other end of the pull rope, and the hook is fixed to the end face of the positioning disk facing away from the magnetic suction cup. When the positioning disk and the magnetic suction cup adsorb to each other, the pull rope is in a relaxed state and the two clamping rods are in a docked state.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The first expansion frame and the second expansion frame are designed at the edge part of the battery compartment, and the first expansion frame and the second expansion frame can be expanded or retracted. In this way, when it is necessary to expand the bearing area of the battery compartment, only need to open the expansion frame, and when not needed, fold it back. Through this design, the expansion of the bearing area of the battery compartment is realized, thus solving the problem that some items with larger sizes are prone to tilt and fall due to the small bearing area during transportation, and improving the transportation speed of the items.

[0017] 2. By providing support feet that can be unfolded and folded at one end of the battery compartment away from the main frame, the support feet can support the other end of the battery compartment after being unfolded, enabling the bearing surface of the battery compartment to remain balanced. This solves the problem that the bearing surface of the existing battery compartment is only supported at one end of the main frame, resulting in tilting and inconvenient loading and unloading. The support feet designed in the present invention make the entire power-assisted front-feed device more flexible and convenient to use.

[0018] 3. An airbag is bonded to the front side wall of the waistband at the position corresponding to the quick-release connector. This not only separates the quick-release connector from the human body, avoiding discomfort caused by contact between the quick-release connector and the back of the body, but also the airbag has a buffering effect, reducing the impact force of the collision between the human body and the quick-release connector caused by an accident. At the same time, since the airbag can be detached from the waistband, it can be replaced at any time when the airbag is damaged, making it convenient to use.

[0019] 4. A plurality of isolation columns are arranged on the barrier belt in a staggered manner. When the waistband is strapped around the waist, ventilation, air permeability, and heat dissipation can be achieved through the gaps between the isolation columns, improving the comfort of wearing the waistband.

[0020] 5. A sleeve is sleeved on the outside of the pull rope to protect the pull rope. The hook realizes position positioning through the adsorption of the positioning plate and the magnetic suction cup. When in use, the pull rope can be pulled out by unplugging it. The overall structure is simple and lightweight, making it easier and more convenient to carry on the waistband.

[0021] 6. The rescue box is wound and connected to the support and the handle through straps, achieving the purpose of placing the rescue box on the battery compartment for transportation. At the same time, for multiple rescue boxes, the straps can be wound around the handles of each rescue box to make the fixation more secure. Moreover, the rescue box is provided with a first positioning member and a second positioning member, enabling multiple rescue boxes to be stacked together in a mutually limiting manner and placed on the battery compartment at the same time. The interaction between multiple rescue boxes is more conducive to the stability of transportation and prevents falling. BRIEF DESCRIPTION OF THE DRAWINGS The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which: Figure 1 is a schematic structural diagram of the power-assisted front-feed device provided by the present invention; Figure 2 is Figure 1 an enlarged structural view of the connection between the battery compartment and the extension frame in Figure 3 is Figure 1 another enlarged structural view of the connection between the battery compartment and the extension frame in Figure 4 is Figure 3 a schematic structural diagram of the locking assembly in Figure 5 is a schematic structural diagram of the extension frame and the support feet in the unfolded state; Figure 6 It is a schematic diagram of the overall structure of the vest; Figure 7 It is a schematic diagram of the structure where the back strap is connected to the waist belt; Figure 8 It is a schematic diagram of the front side wall structure when the waist belt is unfolded; Figure 9 It is a schematic diagram of the structure where the airbag is installed on the waist belt; Figure 10 It is Figure 7 a schematic diagram of the structure of the quick-release joint in Figure 11 It is a schematic diagram of the internal structure of the housing; Figure 12 It is Figure 7 a partial enlarged view of A in Figure 13 It is a schematic diagram of the overall structure after the quick-release joint is inserted into the main frame; Figure 14 It is Figure 13 an enlarged view of the structure where the plug is connected to the quick-release joint in Figure 15 It is a schematic diagram of the plug; Figure 16 It is Figure 14 a sectional view of the structure where the plug is connected to the quick-release joint in Figure 17 It is Figure 13 an enlarged view of the structure where the supports are distributed on the battery compartment in Figure 18 It is a schematic diagram of the rescue box; Figure 19 It is Figure 18 a top view of the box cover in Figure 20 It is a schematic diagram of the handle.

[0022] List of reference numerals: 1. Main frame; 101. Upper connecting frame; 102. Folding rotary joint; 103. Lower connecting frame; 2. Battery compartment; 3. First extension frame; 4. Second extension frame; 5. Support leg; 6. Second fixing seat; 7. First positioning pin; 8. Fourth jack; 9. Third jack; 10. Operating handle; 11. First fixing seat; 12. Third fixing seat; 13. Second positioning pin; 14. Flipping block; 15. Rotating block; 16. Limiting block; 17. Limiting pin; 18. Spring; 19. Driving block; 20. Slideway opening; 21. Sliding column; 22. Disc; 23. Transition groove; 24. Shoulder strap; 241. Rear shoulder strap; 242. Front shoulder strap; 25. Storage pocket; 26. Ventilation hole; 27. Waist belt; 28. Accommodating pocket; 29. Transparent label pocket; 30. Quick-release joint; 301. Sleeve; 302. Housing; 303. Card hole; 304. Positioning disc; 305. Card rod; 306. Limiting spring; 307. Turntable; 308. Protrusion; 309. Chute; 310. Pulling rope; 311. Hook; 312. Magnetic suction cup; 313. Arc-shaped strip; 31. Positioning sleeve; 32. First female magic tape; 33. First male magic tape; 34. Barrier strip; 35. Isolation column; 36. Second male magic tape; 37. Airbag; 38. Plug; 381. Card slot; 39. Rescue box; 391. Box body; 392. Box cover; 40. Support; 41. Handle; 42. First positioning member; 43. Second positioning member; 44. Anti-shift block. Detailed implementation manner To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the use of the terms "first", "second", etc. to limit the components is only for the convenience of distinguishing the above components. Without further statement, the above terms have no special meaning and should not be construed as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "setting", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The present invention relates to the technical field of single-person assisted transportation, and particularly to an assisted forward delivery device with a vest and a rescue box. The purpose is to solve the problem that the bearing area of the battery compartment in the existing single-person assisted forward delivery device is limited, resulting in the problem that when transporting some larger-sized items, it is easy to tilt and fall due to the small bearing area, thus affecting the forward speed, that is, affecting the transportation speed of the items; and the quick-release connector on the vest is inserted into the plug. Since the quick-release connector is relatively hard, it is easy to cause discomfort to the back when installed on the waistband and directly contacts the human back, and the use comfort is poor. For this purpose, the assisted forward delivery device with a vest and a rescue box provided by the present invention includes a main frame 1, a battery compartment 2, an extension frame, and a vest. One end of the battery compartment 2 is fixedly connected to the main frame 1, and a plug 38 is fixed at the end of the main frame 1 away from the battery compartment 2. The other three ends of the battery compartment 2 are all provided with extension frames that can be unfolded or retracted to expand the bearing area of the battery compartment 2 when needed. The vest includes a back strap 24 and a waistband 27. The back strap 24 includes a front back strap 242 and a back back strap 241 that are spliced with each other. The waistband 27 is fixed to the bottom end of the back back strap 241. A barrier strap 34 is detachably connected to the front side wall of the waistband 27. There is a cavity between the barrier strap 34 and the waistband 27. A plurality of staggered and elastic isolation columns 35 are provided on the front side wall of the barrier strap 34. A quick-release connector 30 that can be inserted into the plug 38 is installed in the middle part of the back side wall of the waistband 27. A plurality of juxtaposed air bags 37 are detachably connected to the corresponding part of the front side wall of the waistband 27 with respect to the quick-release connector 30. An extension frame is designed at the edge part of the battery compartment, which can be unfolded or retracted. In this way, when it is necessary to expand the bearing area of the battery compartment, only need to open the extension frame, and when it is not needed, fold it back and retract it. Through this design, the expansion of the bearing area of the battery compartment is realized. Air bags are bonded to the corresponding part of the front side wall of the waistband with respect to the quick-release connector, which not only separates the quick-release connector from the human body, avoiding the problem of discomfort caused by the contact between the quick-release connector and the back of the body, but also the air bags have a buffering effect, reducing the impact force of the collision between the human body and the quick-release connector caused by an accident.

[0026] Next, the assisted forward delivery device with a vest and a rescue box provided by the embodiments of the present invention will be described in detail with reference to the drawings.

[0027] Refer to Figure 1-14, the present invention provides an assisting forward delivery device with a vest and a rescue box, including a main body frame 1, a battery compartment 2, an extension frame and a vest. The battery compartment 2 is of a cuboid structure. One end of the battery compartment 2 is fixedly connected to the main body frame 1. A plug 38 is fixed at the end of the main body frame 1 away from the battery compartment 2. The other three ends of the battery compartment 2 are each provided with an extension frame that can be expanded or retracted to expand the bearing area of the battery compartment 2 when needed. The battery compartment and the main body frame are respectively provided with perforated supports. Handles are respectively fixed on the two side walls of the rescue box. The rescue box is placed on the battery compartment and fixed by tying the straps to the supports and the handles. The vest includes a shoulder strap 24 and a waistband 27. The shoulder strap 24 includes a front shoulder strap 242 and a rear shoulder strap 241 that are spliced with each other. The waistband 27 is fixed at the bottom end of the rear shoulder strap 241. A barrier strap 34 is detachably connected to the front side wall of the waistband 27. There is a cavity between the barrier strap 34 and the waistband 27. A plurality of staggered and elastic isolation columns 35 are provided on the front side wall of the barrier strap 34. A quick plug connector 30 that can be inserted into the plug 38 is installed at the middle part of the rear side wall of the waistband 27. A plurality of juxtaposed air bags 37 are detachably connected to the corresponding part on the front side wall of the waistband 27, and the air bags 37 are located in the cavity. The isolation columns are made of rubber or silica gel, and the top surface of the isolation columns is spherical.

[0028] In the above embodiment, preferably, referring to Figure 2-3 , the extension frame provided at the end of the battery compartment 2 opposite to the main body frame 1 is the first extension frame 3. Connecting frames are respectively fixed on the other two opposite side walls of the battery compartment 2. The first extension frame 3 is connected to the two connecting frames and can perform telescopic movement relative to the battery compartment 2 to realize the expansion or retraction of the first extension frame 3. The extension frames provided at the other two opposite ends of the battery compartment 2 are both the second extension frames 4. The second extension frames 4 are connected to the adjacent connecting frames and can be folded to the bottom of the battery compartment 2 or expanded to expand the bearing surface of the battery compartment.

[0029] In a specific embodiment, referring to Figure 3-5 , the first extension frame 3 is in a U shape. The inside of the connecting frame is a hollow structure. The two side rods of the first extension frame 3 are respectively inserted into different connecting frames and can move horizontally relative to them to realize the expansion or retraction of the first extension frame 3 relative to the battery compartment 2. A locking assembly is fixed at the end of each connecting frame away from the main body frame 1. The locking assembly is set to lock the expanded state or retracted state of the first extension frame 3 so as not to move.

[0030] In the above embodiments, preferably, the locking component includes a first fixing base 11, a limit pin 17 and an operating rod. The first fixing base 11 is fixedly connected to the corresponding connecting frame. A groove is formed at the bottom end of the first fixing base 11. The side wall of the groove away from the connecting frame is an open structure. The operating rod includes a driving block 19 and an operating handle 10. The driving block 19 is located in the groove and is rotatably connected to the first fixing base 11. The bottom end of the operating handle 10 is inserted into the groove from the opening part and is fixedly connected to the driving block 19. The limit pin 17 is located in the groove and a spring 18 is sleeved thereon. The bottom end of the limit pin 17 cooperates with the driving block 19 so that during the process of the operating handle 10 driving the driving block 19 to rotate, the limit pin 17 can move up and down under the combined action of the spring 18 and the driving block 19 to penetrate into the first extension frame 3 or be pulled out of the first extension frame 3 through the first fixing base 11.

[0031] Specifically, referring to Figure 4 , the driving block 19 and the operating handle 10 are of an integral structure. A transition groove 23 capable of inserting the limit pin 17 is provided on the top surface of the driving block 19. Slide ports 20 communicating with the transition groove 23 are provided on the front and rear walls of the driving block 19. The top surface inside the slide ports 20 is an arc-shaped slide surface and the distance from the rotation fulcrum of the driving block 19 gradually increases in the clockwise direction. A sliding column 21 is fixed to the bottom end of the limit pin 17. The sliding column 21 is located in the transition groove 23 and its two ends are respectively inserted into the corresponding slide ports 20 and are in a fitting state with the slide surface under the action of the spring 18, so that the sliding column 21 drives the limit pin 17 to move up and down under the action of the slide surface track during the rotation of the driving block 19.

[0032] More specifically, at the positions corresponding to the limit pin 17 at the bottom of the first extension frame 3 in the unfolded and retracted states respectively, first insertion holes are provided. The top end of the limit pin 17 is inserted into different first insertion holes for locking at different positions. When the limit pin 17 is pulled out of the first insertion hole, the first extension frame 3 can move along the battery compartment 2. The top surface of the driving block 19 is an arc surface, and the distance between the arc surface and the rotation fulcrum of the driving block 19 also gradually increases in the clockwise direction.

[0033] Referring to Figure 4 , two springs 18 are provided and arranged along the axial direction of the limit pin 17. A disc 22 is fixed to the limit pin 17. A first spring 18 is sleeved on the limit pin 17 between the disc 22 and the top end of the groove. A second spring 18 is sleeved on the limit pin 17 between the disc 22 and the top end of the driving block 19. The second spring 18 is in a compressed state. The top end of the first spring 18 is fixedly connected to the top end of the groove. The bottom end of the first spring 18 is fixedly connected to the disc 22. The first spring 18 is in a stretched state.

[0034] As Figure 4As shown, an external force in the clockwise direction is applied to the operating handle 10, driving the driving block 19 to rotate clockwise. During the rotation process, the limit pin 17 is gradually pulled downwards, causing the limit pin 17 to be pulled out from the first jack of the first extension frame 3, so that the first extension frame 3 can move horizontally. At this time, the first spring 18 is stretched, and the compression force of the second spring 18 decreases. When it moves to the corresponding position, the operating handle 10 is rotated in the reverse direction. The second spring 18 is compressed, and the first spring 18 returns to its original position, both driving the limit pin 17 to move upwards to insert into the corresponding first jack to achieve locking.

[0035] In one embodiment, referring to Figure 3 and Figure 5 , the second extension frame 4 is in a U-shaped configuration. The two end portions of the second extension frame 4 are respectively connected to the connecting frame through a 90° folding locking member. The 90° folding locking member includes a U-shaped second fixing seat 6, a flipping block 14, and a first positioning pin 7. The second fixing seat 6 is fixed to the connecting frame. The flipping block 14 is located inside the second fixing seat 6, and one end thereof is rotatably connected to the second fixing seat 6, and the other end is fixedly connected to one side rod end of the second extension frame 4. The second extension frame can reach a state of being folded at the bottom of the battery compartment or being unfolded to expand the bearing surface of the battery compartment with the flipping movement of the flipping block, and is locked to the second fixing seat through the first positioning pin. That is, the second extension frame 4 is locked at different positions of the second fixing seat 6 to achieve being kept folded at the bottom of the battery compartment 2 and being unfolded to expand the bearing surface of the battery compartment 2. Regarding the angle between the flipping block 14 and the side rod of the second extension frame 4, without departing from the basic principle of the present invention, no specific limitation is made in this application. Exemplarily, it can be 90°, that is, the flipping block is in a perpendicular state to the side rod of the second extension frame 4, as Figure 5 shown.

[0036] Specifically, a second jack is provided at the top end of the side wall of the second fixing seat 6, and a third jack 9 is provided at the bottom end of the side wall of the second fixing seat 6. A fourth jack 8 is provided on the flipping block 14. The first positioning pin 7 is passed through the second jack and the fourth jack 8 to lock the position of the flipping block 14. At this time, the second extension frame 4 is in an unfolded state. The first positioning pin 7 is passed through the third jack 9 and the fourth jack 8 to lock the position of the flipping block 14. At this time, the second extension frame 4 is located at the bottom of the battery compartment 2, that is, in a folded and retracted state.

[0037] In this application, the first extension frame 3 and the second extension frame 4 are designed at the edge part of the battery compartment 2. The first extension frame 3 and the second extension frame 4 can be unfolded or retracted. In this way, when it is necessary to expand the bearing area of the battery compartment 2, only the extension frame needs to be opened, and when it is not needed, it can be folded and retracted. Through this design, the expansion of the bearing area of the battery compartment 2 is realized, thus solving the problem that some relatively large-sized items are prone to tilt and fall due to the small bearing area during transportation, and improving the transportation speed of the items.

[0038] In one embodiment, referring to Figure 2-3 , the assisting front feeding device further includes a supporting foot 5, which is connected to one end of the battery compartment 2 away from the main body frame 1. The supporting foot 5 is arranged to be able to unfold relative to the battery compartment 2 to support one end of the battery compartment 2 away from the main body frame 1 or fold at the bottom of the battery compartment 2, and in the unfolded state, it jointly supports the battery compartment with the main body frame so that its bearing surface can be in a horizontal placement state.

[0039] Specifically, two third fixing seats 12 distributed in parallel are fixed on the side wall of the battery compartment 2 away from the main body frame 1. A rotating block 15 is rotatably connected to each third fixing seat 12. The supporting foot 5 is in a U shape. The two side rod ends of the supporting foot 5 are respectively fixedly connected to the rotating block 15 on one third fixing seat 12. The rotating block 15 is perpendicular to the side rod of the supporting foot 5. A limiting block 16 is integrally formed on the rotating block 15. When the rotating block 15 drives the limiting block 16 to rotate and abut against the third fixing seat 12, the supporting foot 5 is in the unfolded state. When the supporting foot 5 folds at the bottom of the battery compartment 2, it is locked on the third fixing seat 12 through the second positioning pin 13.

[0040] Specifically, a fifth jack is provided at the bottom of the side wall of the third fixing seat 12, and a sixth jack is provided on the rotating block 15. When the supporting foot 5 folds at the bottom of the battery compartment 2, the second positioning pin 13 passes through the fifth jack and the sixth jack to achieve position locking.

[0041] In the above embodiment, preferably, in the unfolded state, the included angle between the supporting foot 5 and the bottom wall surface of the battery compartment 2 is greater than or equal to 120°. As Figure 5 shown, the structural schematic diagram when the first extension frame 3, the second extension frame 4 and the supporting foot 5 are all in the unfolded state.

[0042] In the present application, by providing a supporting foot 5 that can be unfolded and folded at one end of the battery compartment 2 away from the main body frame 1, when the supporting foot 5 unfolds to support the battery compartment 2, the bearing surface of the battery compartment 2 can be kept balanced, solving the problem that the bearing surface of the existing battery compartment 2 is only supported at one end of the main body frame 1, resulting in inclination and inconvenient loading and unloading. The designed supporting foot 5 of the present invention makes the whole assisting front feeding device more flexible and convenient to use.

[0043] In the above embodiment, preferably, referring to Figure 7-8 , a first sub - magic tape 33 is fixed on the front side wall of one end of the belt 27, and a first mother - magic tape 32 is fixed on the rear side wall of the other end of the belt 27. The two ends of the belt 27 are connected through the mutual cooperation of the first sub - magic tape 33 and the first mother - magic tape. The barrier tape 34 is detachably connected to the belt 27 through a zipper, and the barrier tape 34 is distributed in the remaining area of the belt 27 after removing the first sub - magic tape 33.

[0044] Specifically, the edge part of the barrier strip 34 is connected to the waistband 27 by a zipper, and the cavity that can be opened or closed between the barrier strip 34 and the waistband 27 is a pocket capable of holding items, which is used to place some items with nowhere to be placed. At the same time, the airbag 37 is arranged in the cavity, which also plays a protective role to avoid loss.

[0045] In one embodiment, the airbag 37 is detachably connected to the front side wall of the waistband 27 by Velcro. An inflatable port protruding outward is arranged on the airbag 37, and a receiving pocket 28 for storing the redundant airbag 37 and a transparent label pocket 29 for placing label paper are arranged on the rear side wall of the back strap 241.

[0046] Specifically, referring to Figure 9 , a second male Velcro 36 is fixed at the position corresponding to the quick connector 30 on the front side wall of the waistband 27. A second female Velcro is fixed on one side wall of each airbag 37. The airbag 37 is detachably connected to the waistband 27 through the cooperation of the second male Velcro 36 and the second female Velcro.

[0047] In one embodiment, referring to Figure 7 , a receiving pocket 28 for storing the redundant airbag 37 and a transparent label pocket 29 for placing label paper are arranged on the rear side wall of the back strap 241. A zipper is arranged at the top of the receiving pocket 28 for opening or closing the receiving pocket 28.

[0048] In the above embodiment, an inflatable port is arranged on the airbag 37, so that the inflation amount of the airbag 37 can be adjusted according to one's own needs. Moreover, if an airbag 37 is damaged, a spare airbag 37 can be taken from the receiving pocket 28 for replacement, making the use more flexible. Labels can be placed in the transparent label pocket 29 to mark the model of the vest, function description and the model of the assisting front feeding device matched with it, so that the user can more easily understand how to use it.

[0049] In one embodiment, referring to Figure 6 , a plurality of storage pockets 25 are arranged on the front side wall of the front strap 242. Some items can be placed in the storage pockets 25 for convenient carrying. A plurality of ventilation holes 26 are arranged on the front side wall of the front strap 242 for heat dissipation.

[0050] In one embodiment, referring to Figure 10-16, the quick-connect fitting 30 includes a housing 302, a turntable 307, two clamping rods 305 and a driver. The turntable 307 is rotatably connected inside the housing 302. The clamping rods 305 are arc-shaped. One end of each of the two clamping rods 305 is rotatably connected to two symmetric positions on the turntable 307 so that the two clamping rods 305 can dock to form a closed clamping hole 303 during rotation or separate to open the clamping hole 303. One end of the clamping rod 305 rotatably connected to the turntable 307 is connected to the housing 302 through a limit spring 306. The two clamping rods 305 are in a docked state under the action of the limit spring 306. The driver is installed on the waistband 27 and connected to the turntable 307. The driver is arranged to be able to drive the turntable 307 to rotate in the direction of compressing the limit spring 306.

[0051] Specifically, referring to Figure 10-12 and Figure 16 , a protrusion 308 extends outward from one end of the clamping rod 305 rotatably connected to the turntable 307. One end of the limit spring 306 is fixedly connected to the protrusion 308, and the other end of the limit spring 306 is fixedly connected to the inner wall of the housing 302. A trajectory limit assembly for restricting the rotation trajectory of the clamping rod 305 is provided between the protrusion 308 and the turntable 307. When the two clamping rods 305 are docked, the other end of one clamping rod 305 abuts against the inner side wall of the other clamping rod 305, so that the clamping hole 303 can be formed. As Figure 15 shown, a clamping groove 381 is provided on the plug 38, and the clamping hole 303 is stuck in the clamping groove 381 to realize the connection between the quick-connect fitting 30 and the plug 38.

[0052] More specifically, the trajectory limit assembly includes a slider and a chute 309. The chute 309 is provided on the turntable 307. The slider is fixed on the end face of the protrusion 308 facing the turntable 307. The slider is inserted into the chute 309. The clamping rod 305 rotates according to the movement trajectory of the slider in the chute 309, so that the two clamping rods 305 are closed by docking or separated to open the clamping hole 303. When the clamping hole 303 is opened, the plug 38 in the power-assisted forward feeding device can be inserted into the clamping hole 303. When the clamping hole 303 is closed, the plug 38 can be locked in the clamping hole 303 to realize the connection and disconnection between the waistband 27 and the power-assisted forward feeding device.

[0053] In addition, a jack communicating with the clamping hole 303 is provided on the side wall of the housing 302 facing away from the waistband 27 for the plug 38 to pass through. Two arc-shaped strips 313 symmetrically distributed with the center of the jack as the symmetric point are fixed on the side wall of the housing 302 outside the jack. When the plug 38 is inserted into the jack, the outer edge of the plug 38 is inserted into the area surrounded by the two arc-shaped strips 313 for restricting the moving displacement of the plug 38. As Figure 10 and Figure 14 shown. In one embodiment, referring to Figure 7 and Figure 11-12, the driver includes a drawstring 310, a sleeve 301, and a hook 311. One end of the drawstring 310 extends into the housing 302 and is fixedly connected to the turntable 307 so that the turntable 307 rotates through the pulling action of the drawstring 310. The other end of the drawstring 310 is connected with a hook 311. The sleeve 301 is sleeved on the drawstring 310 and one end of it is connected to the housing 302.

[0054] Specifically, a plurality of positioning sleeves 31 are sewn on the outer side wall of the belt 27 at intervals. The sleeve 301 passes through the positioning sleeve 31 to be restricted on the belt 27, ensuring that the position of the drawstring 310 on the belt 27 does not change.

[0055] In one embodiment, refer to Figure 12 , a magnetic suction cup 312 is fixed to the other end of the sleeve 301, a positioning disk 304 capable of adsorbing to the magnetic suction cup 312 is fixed to the other end of the drawstring 310, the hook 311 is fixed to the end face of the positioning disk 304 facing away from the magnetic suction cup 312. When the positioning disk 304 and the magnetic suction cup 312 adsorb to each other, the drawstring 310 is in a relaxed state and the two clamping rods 305 are in a butting state.

[0056] In the above embodiment, the position of the hook 311 is positioned by the adsorption of the positioning disk 304 and the magnetic suction cup 312. When in use, the drawstring 310 can be pulled out by unplugging it. The overall structure is simple and lightweight, making it easier and more convenient to carry on the belt 27.

[0057] In one embodiment, refer to Figure 18-19 , the rescue box 39 includes a box body 391 and a box cover 392. The top end of the box body 391 is an open structure, and the box cover 392 is buckled on the top end of the box body 391 to seal the opening. A plurality of uniformly distributed first positioning members 42 are provided on the outer wall of the top end of the box cover 392, and second positioning members 43 corresponding to and cooperating with the first positioning members 42 one by one are provided on the outer wall of the bottom end of the box body 391. The handle 41 is fixed on the two side walls of the box body 391. During the stacking process of the rescue boxes 39, the function that the positions of adjacent rescue boxes 39 do not change after stacking is realized by the mutual cooperation of the first positioning members 42 on the box cover 392 and the second positioning members 43 at the bottom end of the box body 391, avoiding the problem that multiple rescue boxes 39 fall due to sliding after stacking. As Figure 20 shown, a plurality of anti-shift blocks are provided on the handle at equal intervals along the length direction of the handle. When the binding belt is wound around the handle, it can be wound between two adjacent anti-shift blocks, so that the binding belt is restricted from moving along the length direction of the handle, ensuring firm binding.

[0058] Specifically, the edge part of the box cover 392 and the box body 391 are connected by a plurality of butterfly buckles. The first positioning member 42 is a groove, and the second positioning member 43 is a plug that can be inserted into the groove. The plurality of first positioning members 42 are distributed on the box cover 392 in a rectangular array. The plug and the bottom wall of the box body 391 are of an integral structure. The plurality of grooves provided on the box cover 392 not only play a positioning role, but also help to improve the strength of the box cover 392. Similarly, the plug provided at the bottom end of the box body 391 also helps to improve the strength of the bottom wall of the box body 391.

[0059] Refer to Figure 1 , the main body frame 1 includes an upper connection frame 101, a folding rotary joint 102, a connecting member 104, a lower connection frame 103 and a shock-absorbing shaft 105. The upper connection frame 101 is connected to the connecting member 104 through the folding rotary joint 102. The connecting member 104 is fixedly connected to the lower connection frame 103. The control system is arranged on the connecting member. The lower connection frame 103 is fixedly connected to the battery compartment 2 through the shock-absorbing shaft 105. Both sides of the shock-absorbing shaft are connected to hub motors, and the hub motors are connected to the control system. The folding rotary joint 102 is used to enable the upper connection frame 101 to rotate and fold relative to the lower connection frame 103. The support 40 on the main body frame 1 is fixed on the lower connection frame 103, as Figure 13 shown.

[0060] It should be noted that the structures of the folding rotary joint 102 and the shock-absorbing shaft are well-known to those skilled in the art. Therefore, they will not be described in detail here.

[0061] In the above embodiment, the support 40 is designed as a support 40 with holes, which is conducive to the strap passing through the inside of the support 40. There is a gap between the handle 41 and the box body 391, which is also used for the strap to pass through. In this way, the rescue box 39 can be fixed on the battery compartment 2 by tying the handle 41 and the support 40 with the strap. For multiple stacked rescue boxes 39, a handle 41 is provided on each rescue box 39, which can not only facilitate the handling of the rescue box 39, but also be tied with the strap to achieve the purpose of binding and fixing multiple rescue boxes 39. Regarding the winding method of tying the rescue box 39 with the strap, it can be flexibly selected according to the actual situation, and the present application does not make specific limitations.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power-assisted forward delivery device with a vest and a rescue box, characterized in that, It includes a main frame, a battery compartment, an extension frame, a vest and a rescue box. The battery compartment is of a cuboid structure. One end of the battery compartment is fixedly connected to the main frame. A plug is fixed at the end of the main frame away from the battery compartment. Expandable or retractable extension frames are provided at the other three ends of the battery compartment to expand the bearing area of the battery compartment when needed. There are perforated supports on the battery compartment and the main frame respectively. Handles are fixedly installed on both side walls of the rescue box. The rescue box is placed on the battery compartment and fixed by tying the straps to the supports and the handles. The vest includes a shoulder strap and a waistband. The shoulder strap includes a front shoulder strap and a rear shoulder strap spliced with each other. The waistband is fixed at the bottom end of the rear shoulder strap. A barrier strap is detachably connected to the front side wall of the waistband. There is a cavity between the barrier strap and the waistband. A plurality of staggered and elastic isolation columns are arranged on the front side wall of the barrier strap. A quick connector capable of being inserted into the plug is installed at the middle part of the rear side wall of the waistband. A plurality of side-by-side air bags are detachably connected to the corresponding part of the front side wall of the waistband, and the air bags are located in the cavity.

2. The power-assisted forward delivery device with a vest and a rescue box according to claim 1, characterized in that, The extension frame provided at the end of the battery compartment opposite to the main frame is the first extension frame. Connecting frames are respectively fixed on the other two opposite side walls of the battery compartment. The first extension frame is connected to the two connecting frames and can move telescopically relative to the battery compartment to realize the expansion or retraction of the first extension frame. The extension frames provided at the other two opposite ends of the battery compartment are both second extension frames. The second extension frames are connected to the adjacent connecting frames and can be folded to the bottom of the battery compartment or expanded to expand the bearing surface of the battery compartment. The supports on the battery compartment are respectively fixed on the outer side walls of the connecting frames.

3. The assisted forward delivery device with a vest and a rescue box according to claim 2, wherein, The first extension frame is in a U shape. The two side rods of the first extension frame are respectively inserted into different connecting frames and can move horizontally relative to them to realize the expansion or retraction of the first extension frame relative to the battery compartment. A locking assembly is fixed at the end of each connecting frame away from the main frame. The locking assembly is set to lock the expanded state or retracted state of the first extension frame to prevent it from moving; and / or The second extension frame is in a U shape. The two ends of the second extension frame are respectively connected to the connecting frame through a 90° folding locking piece. The 90° folding locking piece includes a U-shaped second fixing seat, a turning block and a first positioning pin. The second fixing seat is fixed on the connecting frame. The turning block is located inside the second fixing seat and one end of it is rotatably connected to the second fixing seat, and the other end is fixedly connected to the end of a side rod of the second extension frame. The second extension frame can reach the state of being folded at the bottom of the battery compartment or be expanded to expand the bearing surface of the battery compartment with the turning movement of the turning block, and is locked on the second fixing seat by the first positioning pin.

4. The assisting forward delivery device with a vest and a rescue box according to claim 3, characterized in that, The locking component includes a first fixed seat, a limit pin and an operating rod. The first fixed seat is fixedly connected to the corresponding connecting frame. A groove is formed at the bottom end of the first fixed seat. The side wall of the groove away from the connecting frame is an open structure. The operating rod includes a driving block and an operating handle. The driving block is located in the groove and is rotatably connected to the first fixed seat. The bottom end of the operating handle is inserted into the groove from the opening part and is fixedly connected to the driving block. The limit pin is located in the groove and a spring is sleeved on it. The bottom end of the limit pin cooperates with the driving block so that during the rotation of the driving block driven by the operating handle, the limit pin can move up and down under the combined action of the spring and the driving block to insert into or pull out from the first extension frame through the first fixed seat.

5. The power-assisted forward delivery device with a vest and a rescue box according to claim 4, wherein A transition groove capable of inserting the limit pin is provided on the top surface of the driving block. Slide openings communicating with the transition groove are provided on the front and rear walls of the driving block. The top surface inside the slide openings is an arc-shaped slide surface and the distance from the rotation fulcrum of the driving block gradually increases in the clockwise direction. A sliding column is fixed to the bottom end of the limit pin. The sliding column is located in the transition groove and its two ends are respectively inserted into the corresponding slide openings and are in a fitting state with the slide surface under the action of the spring, so that the sliding column drives the limit pin to move up and down under the action of the slide surface track during the rotation of the driving block.

6. The assisting forward delivery device with a vest and a rescue box according to claim 1, characterized in that, The rescue box includes a box body and a box cover. The top end of the box body is an open structure. The box cover is buckled on the top end of the box body to seal the opening. A plurality of uniformly distributed first positioning members are provided on the outer wall of the top end of the box cover. Second positioning members corresponding to and cooperating with the first positioning members are provided on the outer wall of the bottom end of the box body. The handle is fixed on the side wall of the box body. A plurality of anti-shift blocks are provided on the handle at equal intervals along the length direction of the handle.

7. The power-assisted forward delivery device with a vest and a rescue box according to claim 1, wherein The assisting forward delivery device further includes a support leg. The support leg is connected to the end of the battery compartment away from the main body frame. The support leg is arranged to be able to unfold relative to the battery compartment to support the end of the battery compartment away from the main body frame or fold at the bottom of the battery compartment, and in the unfolded state, jointly support the battery compartment with the main body frame so that its bearing surface can be in a horizontal placement state.

8. The assisting forward delivery device with a vest and a rescue box according to claim 1, characterized in that, The airbag is detachably connected to the front side wall of the waist belt by a magic tape. An outwardly protruding inflation port is provided on the airbag. A receiving pocket for storing the redundant airbag and a transparent label pocket for placing label paper are provided on the rear side wall of the back strap.

9. The power-assisted forward delivery device with a vest and a rescue box according to claim 1, characterized in that, The quick-connect fitting includes a housing, a turntable, two clamping rods and a driver. The turntable is rotatably connected inside the housing. The clamping rods are arc-shaped. One ends of the two clamping rods are respectively rotatably connected to two symmetrical positions on the turntable so that the two clamping rods can be docked to form a closed clamping hole during rotation or separated to open the clamping hole. One end of the clamping rod rotatably connected to the turntable is connected to the housing through a spring. The two clamping rods are in a docked state under the action of the spring. The driver is installed on the belt and connected to the turntable. The driver is arranged to be able to drive the turntable to rotate in the direction of spring compression.

10. The assisted forward delivery device with a vest and a rescue box according to claim 9, characterized in that, The driver includes a pull rope, a sleeve and a hook. One end of the pull rope extends into the housing and is fixedly connected to the turntable to rotate the turntable through the pulling action of the pull rope. The sleeve is sleeved on the pull rope and one end of it is connected to the housing. A magnetic suction cup is fixed at the other end of the sleeve. A positioning disc capable of adsorbing to the magnetic suction cup is fixed at the other end of the pull rope. The hook is fixed on the end face of the positioning disc facing away from the magnetic suction cup. When the positioning disc and the magnetic suction cup adsorb to each other, the pull rope is in a relaxed state and the two clamping rods are in a docked state.

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