Two-in-one trolley

Abstract

The two-in-one trolley comprises a rear piece, the two sides of the rear piece are connected with a left side piece and a right side piece through bolts, the left side piece, the rear piece and the right side piece are inserted into a bottom frame and fixedly connected through bolts, trundles are installed at the four corners of the bottom of the bottom frame, a chassis is installed in the bottom frame, and a bandage is arranged between the left side piece and the right side piece. The two trucks can realize back-to-back locking and integration, are suitable for various storage spaces or long and narrow aisles where goods are placed on the two sides, can synchronously load and unload the goods front and back, and are time-saving and labor-saving; when the two vehicles are locked back to back, the two vehicles can be automatically locked and self-locked only by fitting the two vehicles, so that convenience and rapidness are achieved; the chassis is provided with double locking, self-locking can be achieved through the torsional spring, the structure is stable, the bearing capacity is large, and folding is convenient and fast; multiple vehicles can be nested and stacked after the chassis is folded, so that the space is saved during no-load; the whole vehicle is detachable, transportation is more convenient, assembly can be achieved only by installing bolts, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This invention relates to the field of logistics transportation equipment technology, and in particular to a two-in-one vehicle. Background Technology

[0002] Two-sided cargo cages (with only two side panels and a chassis) allow for loading and unloading through the front and rear doors. However, when overloaded, the lack of front and rear support increases the risk of goods falling during movement. Four-sided cargo cages typically have foldable front doors, which helps prevent falling when carrying heavy loads, but opening the front door during loading is laborious, and the added cost and weight increase the overall weight. Three-sided cargo cages address these issues. However, existing three-sided cargo cages can only load and unload goods from the front door in narrow aisles (similar to warehouse aisles), preventing bidirectional loading. Turning is also restricted, resulting in significant limitations. Summary of the Invention

[0003] To solve the above problems, the present invention provides a two-in-one vehicle.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a two-in-one vehicle, including a rear panel, with a left side panel and a right side panel connected to both sides of the rear panel by bolts, the left side panel, the rear panel and the right side panel being inserted into the base frame and fixedly connected by bolts, casters being installed at the four corners of the bottom of the base frame, a chassis being installed inside the base frame, and a strap being provided between the left side panel and the right side panel.

[0005] Furthermore, the left side plate includes a side horizontal tube, a side horizontal plate, a side vertical tube, a sliding component, a left curved tube, a left side tube, a left inclined tube, and a left lower tube; a left curved tube is welded to the top of the left side tube, a side horizontal tube is welded to the bottom of the left side tube, several side horizontal plates are welded to the middle of the left side tube, the side horizontal plates and side horizontal tubes are welded to the left curved tube, the side vertical tube is welded to the left curved tube, the side horizontal plate, and the side horizontal tube, the sliding component is slidably connected to the side vertical tube, and a left inclined tube and a left lower tube are welded to the left side tube.

[0006] Furthermore, the sliding component includes a sliding plate and two connecting bolts; the two sliding plates are assembled on the side vertical tube and fixed by the two connecting bolts on both sides.

[0007] Furthermore, the rear panel includes a lock assembly, a bolt assembly, a rear curved tube, a rear vertical tube, a rear narrow tube, an L-shaped thread, a U-shaped thread, a rear small tube, and a handle thread; a rear horizontal tube is welded to the bottom of the rear curved tube, two rear vertical tubes are welded between the rear curved tube and the rear horizontal tube, several rear narrow tubes are distributed between the two rear vertical tubes, the rear narrow tubes are welded between the rear curved tube and the rear horizontal tube, the lock assembly is welded to the bolt assembly, both the lock assembly and the bolt assembly are welded to one side of the rear curved tube, L-shaped threads and U-shaped threads are provided between adjacent rear narrow tubes, and a rear small tube and a handle thread are welded to the other side of the rear curved tube.

[0008] Furthermore, the lock assembly includes a front plate, side plates, bevel plates, top plate, hook plate, spring, bolt, sleeve, and cross tube. Two side plates are welded to the end face of the front plate. The bevel plates, top plate, and hook plate are welded in sequence. The bolt passes through the side plates, the hook plate, and the sleeves on both sides of the hook plate and is fastened with a nut. A spring is fitted on the sleeve. The bottom of the hook plate is threaded with a bolt. A cross tube is welded between the two side plates. The spring includes a front section, a middle section, and a central section. Both ends of the central section are connected to the middle section and the front section to form an integral structure.

[0009] Furthermore, the pin assembly includes a pin tube, a pin handle, a pin shaft, and a pin spring; the pin shaft is inserted into the pin tube, a pin handle is inserted into one end of the pin shaft, and a pin spring is fitted onto the other end.

[0010] Furthermore, the right side plate includes a right bend pipe, a right vertical pipe, a right side pipe, and a side horizontal plate; the right side pipe is welded to the right bend pipe, and several side horizontal plates are welded between the right side pipe and the right bend pipe; the right vertical pipe is welded to the right bend pipe and the side horizontal plates.

[0011] Furthermore, the chassis includes a bottom horizontal tube, a chassis plate, a bottom vertical tube, a bottom L-plate, a bottom U-plate, a bottom hook plate, a small U-plate, and a panel; two bottom vertical tubes are welded between the two bottom horizontal tubes, a panel is welded between the bottom horizontal tubes and the bottom vertical tubes, and wide U-plates, narrow U-plates, and support plates are arranged and welded between the two bottom horizontal tubes. Two chassis plates and bottom L-plates are welded to one side of the bottom vertical tube, and two small U-plates, two bottom hook plates, and two bottom U-plates are welded to the bottom vertical tube on the other side.

[0012] Furthermore, the base frame includes a main tube. A left rear plate and support tube are welded to one side of the main tube. The left rear plate is welded to the left rear baffle. Both the left rear baffle and support tube are welded to the left flat tube. Two left front plates, a front pad tube, and a left end plate are welded to the left flat tube. The left front plate is welded to the left front baffle. Caster plates are welded to the bottom of the left rear plate, left rear baffle, support tube, left front plate, left front baffle, and front pad tube. On the other side of the main tube, a right rear plate, right baffle, and support tube are welded in sequence. The right rear plate and right baffle are both welded to the right flat tube. A bottom pin, pad plate, connecting plate, right end plate, right front tube, and front end plate are welded to the right flat tube. Caster plates are welded to the bottom of the pad tube, the right front tube and the front pad tube, the support tube, the right rear plate, and the right baffle. The base frame locking assembly is connected to the connecting plate by connecting bolt three. The base frame locking assembly includes a handle plate, a U-shaped rib, a side sleeve, and a lower plate welded in sequence. The lower plate is connected to the rotating plate by bottom bolts. An intermediate sleeve is inserted between the two side sleeves. A torsion spring is fitted on the intermediate sleeve. Connecting bolt three passes through the connecting plate, the two side sleeves, and the intermediate sleeve and is fastened by a lock nut. The torsion spring includes a torsion spring middle section. Both ends of the torsion spring middle section are connected to rotating springs. The rear section of the torsion spring is a one-piece molded structure.

[0013] The beneficial effects of this invention are: 1. The two vehicles can be locked back to back and combined into one, which is suitable for various storage spaces or narrow aisles where goods are placed on both sides. The front and rear can load and unload goods simultaneously, saving time and effort. 2. When the two vehicles are locked back to back, simply place them together and they will automatically lock, forming a self-locking mechanism, which is convenient and quick. 3. The chassis is equipped with double locking and can be self-locked by torsion springs, making it structurally stable, capable of bearing heavy loads, and easy and quick to fold. 4. The chassis can be folded for multiple vehicles to be nested and stacked, saving space when unloaded; 5. The entire vehicle is detachable, making transportation more convenient. Assembly only requires the installation of bolts, making it quick and easy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram of the left side panel; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a schematic diagram of the rear panel; Figure 5 This is a schematic diagram of the lock components; Figure 6 A schematic diagram of the lock assembly after the right side panel has been removed; Figure 7 This is a schematic diagram of the lock spring; Figure 8 This is a schematic diagram of the latch assembly; Figure 9 This is a schematic diagram of the internal structure of the latch assembly; Figure 10 This is a schematic diagram of the right side panel; Figure 11 This is a schematic diagram of the chassis; Figure 12 This is a schematic diagram of the chassis after the panel has been removed. Figure 13 This is a schematic diagram of the base frame; Figure 14 This is a schematic diagram of the base frame locking assembly; Figure 15 This is a schematic diagram of a torsion spring; Figure 16 This is a schematic diagram showing the fit between the back piece and the left and right side pieces; Figure 17 for Figure 16 Enlarged view of point B; Figure 18 This is a schematic diagram showing the fit between the underframe and the chassis. Figure 19 for Figure 18 Enlarged view of point C; Figure 20 for Figure 18 Enlarged diagram of point D; Figure 21 For the base frame and rear panel, and left and right side panels to fit together; Figure 22 for Figure 21 Enlarged view of point E; Figure 23 for Figure 21 Enlarged schematic diagram at point F; Figure 24 This is a schematic diagram of the chassis folding mechanism; Figure 25 for Figure 24 Enlarged schematic diagram at point F; Figure 26 This is a diagram showing two cars back-to-back. Figure 27 for Figure 26 Enlarged schematic diagram at point G; Figure 28 A schematic diagram showing the lock assembly in the open state; Figure 29 This is a diagram illustrating a nested multi-vehicle configuration.

[0015] The components include: 1. Left side panel, 2. Rear panel, 3. Right side panel, 4. Base frame, 5. Chassis, 6. Straps, 7. Casters, 8. Bolts, 9. Connecting bolt 1, 10. Locking bolt, 11. Side horizontal tube, 12. Side horizontal plate, 13. Side vertical tube, 14. Sliding component, 15. Left bend tube, 16. Left side tube, 17. Left slanted tube, 18. Lower left tube, 21. Locking assembly, 22. Pin assembly, 23. Rear bend tube, 24. Rear vertical tube, 25. Rear narrow tube, 26. L-shaped wire, 27. U-shaped wire, 28. Rear small tube. 29. Handle thread; 31. Right bend pipe; 32. Right vertical pipe; 33. Right side pipe; 51. Bottom horizontal pipe; 52. Base plate; 53. Bottom vertical pipe; 54. Bottom L plate; 55. Bottom U plate; 56. Bottom hook plate; 57. Small U plate; 58. Panel; 141. Sliding plate; 142. Connecting bolt two; 211. Lock front plate; 212. Lock side plate; 213. Lock diagonal plate; 214. Lock top plate; 215. Lock hook plate; 216. Lock spring; 217. Lock bolt; 218. Lock sleeve; 219. Lock horizontal pipe. 221. Pin tube; 222. Pin handle; 223. Pin shaft; 224. Pin spring; 411. Left front plate; 412. Left front baffle; 413. Front pad tube; 414. Left end plate; 415. Base plate; 416. Left flat tube; 417. Left rear plate; 418. Left rear baffle; 419. Support tube; 420. Main tube; 421. Right rear plate; 422. Right baffle; 423. Bottom pin; 424. Pad plate; 425. Connecting plate; 426. Right flat tube; 427. Right end plate; 428. Right... Front tube, 429, caster plate, 430, base frame locking assembly, 431, handle plate, 432, U-shaped rib, 433, side sleeve, 434, lower plate, 435, bottom bolt, 436, middle sleeve, 437, torsion spring, 438, connecting bolt three, 439, rotating plate, 581, wide U-plate, 582, narrow U-plate, 583, support plate, 2161, front section of spring, 2162, spring section, 2163, middle section of spring, 4371, rear section of torsion spring, 4372, rotating spring, 4373, middle section of torsion spring. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-29 The technical solutions of the present invention have been clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] The two-in-one vehicle includes a rear panel 2. The two sides of the rear panel 2 are connected by bolts 8 to a left panel 1 and a right panel 3. The left panel 1, rear panel 2, and right panel 3 are inserted into the base frame 4 and fixedly connected by bolts 8. Casters 7 are installed at the four corners of the bottom of the base frame 4. The chassis 5 is installed inside the base frame 4. Straps 6 are provided between the left panel 1 and the right panel 3.

[0018] The left side plate 1 includes a side horizontal tube 11, a side horizontal plate 12, a side vertical tube 13, a sliding member 14, a left curved tube 15, a left side tube 16, a left inclined tube 17, and a left lower tube 18. The left curved tube 15 is welded to the top of the left side tube 16, the side horizontal tube 11 is welded to the bottom of the left side tube 16, and several side horizontal plates 12 are welded to the middle of the left side tube 16. The side horizontal plates 12 and the side horizontal tube 11 are all welded to the left curved tube 15. The side vertical tube 13 is welded to the left curved tube 15, the side horizontal plate 12, and the side horizontal tube 11. The sliding member 14 is slidably connected to the side vertical tube 13. The left inclined tube 17 and the left lower tube 18 are welded to the left side tube 16.

[0019] The sliding component 14 includes a sliding plate 141 and a connecting bolt 142; the two sliding plates 141 are fitted together on the side vertical tube 13 and fixed by the connecting bolts 142 on both sides.

[0020] The rear section 2 includes a lock assembly 21, a bolt assembly 22, a rear curved tube 23, a rear vertical tube 24, a rear narrow tube 25, an L-shaped wire 26, a U-shaped wire 27, a rear small tube 28, and a handle wire 29. A rear horizontal tube is welded to the bottom of the rear curved tube 23. Two rear vertical tubes 24 are welded between the rear curved tube 23 and the rear horizontal tube. Several rear narrow tubes 25 are distributed between the two rear vertical tubes 24. The rear narrow tubes 25 are welded between the rear curved tube 23 and the rear horizontal tube. The lock assembly 21 is welded to the bolt assembly 22. Both the lock assembly 21 and the bolt assembly 22 are welded to one side of the rear curved tube 23. An L-shaped wire 26 and a U-shaped wire 27 are provided between adjacent rear narrow tubes 25. A rear small tube 28 and a handle wire 29 are welded to the other side of the rear curved tube 23.

[0021] Lock assembly 21 includes a front lock plate 211, side lock plates 212, bevel lock plates 213, top lock plate 214, hook lock plate 215, lock spring 216, lock bolt 217, lock sleeve 218, and lock cross tube 219. Two side lock plates 212 are welded to the end face of the front lock plate 211. The bevel lock plate 213, top lock plate 214, and hook lock plate 215 are welded in sequence. The lock bolt 10 passes through the two side lock plates 212, the middle hook lock plate 215, and the hook lock plate 216. 5 The locking sleeves 218 on both sides are fastened with lock nuts. Locking springs 216 are fitted on the locking sleeves 218. Locking bolts 217 are threaded to the bottom of the locking hook plate 215. Locking horizontal tubes 219 are welded between the two locking side plates 212. Locking springs 216 include a front section 2161, a spring section 2162, and a middle section 2163. Both ends of the middle section 2163 are connected to the spring section 2162 and the front section 2161 to form an integral structure.

[0022] The pin assembly 22 includes a pin tube 221, a pin handle 222, a pin shaft 223, and a pin spring 224. The pin shaft 223 is inserted into the pin tube 221. The pin handle 222 is inserted into one end of the pin shaft 223, and the pin spring 224 is fitted onto the other end.

[0023] The right side plate 3 includes a right bend pipe 31, a right vertical pipe 32, a right side pipe 33, and a side horizontal plate 12; the right side pipe 33 is welded to the right bend pipe 31, and several side horizontal plates 12 are welded between the right side pipe 33 and the right bend pipe 31; the right vertical pipe 32 is welded to the right bend pipe 31 and the side horizontal plates 12.

[0024] The chassis 5 includes a bottom horizontal tube 51, a chassis plate 52, a bottom vertical tube 53, a bottom L plate 54, a bottom U plate 55, a bottom hook plate 56, a small U plate 57, and a panel 58; two bottom vertical tubes 53 are welded between the two bottom horizontal tubes 51, and a panel 58 is welded between the bottom horizontal tubes 51 and the bottom vertical tubes 53; a wide U plate 581, a narrow U plate 582, and a support plate 583 are arranged and welded between the two bottom horizontal tubes 51; two chassis plates 52 and bottom L plates 54 are welded on one side of the bottom vertical tube 53, and two small U plates 57, two bottom hook plates 56, and two bottom U plates 55 are welded on the other side of the bottom vertical tube 53.

[0025] The base frame 4 includes a main tube 420. A left rear plate 417 and a support tube 419 are welded to one side of the main tube 420. The left rear plate 417 is welded to a left rear baffle 418. Both the left rear baffle 418 and the support tube 419 are welded to a left flat tube 416. Two 415s, a left front plate 411, a front pad tube 413, and a left end plate 414 are welded to the left flat tube 416. The left front plate 411 is welded to a left front baffle 412. The left rear plate 417 and the left rear baffle 419 are also welded to the support tube 419. 18. Caster plates 429 are welded to the bottom of the support tube 419, left front plate 411, left front baffle 412, and front pad tube 413. On the other side of the main tube 420, the right rear plate 421, right baffle 422, and support tube 419 are welded in sequence. The right rear plate 421 and right baffle 422 are both welded to the right flat tube 426. A bottom pin 423, pad 424, connecting plate 425, right blocking plate 427, and right front tube 419 are welded to the right flat tube 426. 28. Caster plates 429 are welded to the bottom of the front pad tube 413, the right front tube 428, the front pad tube 413, the support tube 419, the right rear plate 421, and the right baffle 422. The base frame locking assembly 430 is connected to the connecting plate 425 by connecting bolts 438. The base frame locking assembly 430 includes a handle plate 431, a U-shaped rib 432, a side sleeve tube 433, and a lower plate 434 welded in sequence. The lower plate 434 is connected to the base plate 435 by bottom bolts 435. The rotating plate 439 is connected, and an intermediate sleeve 436 is inserted between the two side sleeves 433. A torsion spring 437 is fitted on the intermediate sleeve 436. The connecting bolt 438 passes through the connecting plate 425, the two side sleeves 433, and the intermediate sleeve 436 and is fastened by a lock nut. The torsion spring 437 includes a torsion spring middle section 4373, and both ends of the torsion spring middle section 4373 are connected to rotating springs 4372 and torsion spring rear section 4371, forming an integral structure.

[0026] Assembly: Place the left side piece 1 to the left of the rear piece 2, so that the lock assembly 21 and the bolt assembly 22 of the rear piece 2 are inserted into the notch of the left tube 16. At this time, the left tube 16 and the two round holes of the rear curved tube 23 are concentric. Insert the bolt 8 to connect the left side piece 1 and the rear piece 2. Place the right side piece 3 to the right of the rear piece 2, so that the right tube 33 and the two round holes of the rear curved tube 23 are concentric. Insert the bolt 8 to connect the right side piece 3 and the rear piece 2. Place all three together into the base frame 4, specifically, insert the lower end of the left curved tube 15 into the left front groove of the base frame 4, insert the lower left ends of the left tube 16 and the rear curved tube 23 into the left rear groove of the base frame 4, and insert the lower left ends of the right tube 33 and the rear curved tube 23 into the right front groove of the base frame 4. Connect the groove and the tube in sequence with the bolt 8. Place the left side chassis plate 52 of the chassis 5 into the middle of the base plate 415, making the two round holes concentric, and insert the connecting bolt 9 to rotate and connect the two. When the right side is lowered, when the U-shaped rib 432 touches the front end of the bottom hook plate 56, it is subjected to force and rotates to the left around the bottom bolt 435, and the torsion spring 437 is compressed. When the chassis 5 is completely lowered, the base frame 4 and the locking assembly 21 are returned to the center by the force of the torsion spring 437. At this time, the bottom pins 423 on both sides are inserted into the round holes of the bottom U plate 55, and the chassis 5 is doubly locked. Assembly is complete.

[0027] Two-in-one back-to-back locking: There is a set of lock components 21 and a bolt assembly 22 on the upper and lower left side of the single bicycle, and a set of handle screws 29 on the upper and lower right side. When the two vehicles are placed back to back, when the handle screw 29 of the rear vehicle touches the lock hook plate 215 of the front vehicle (and simultaneously the handle screw 29 of the front vehicle touches the lock hook plate 215 of the rear vehicle), the lock hook plate 215 is forced to rotate the lock assembly 21 around the lock bolt 217. At this time, the lock spring 216 will be compressed, and the front inclined surface of the lock ramp 213 will contact the pin shaft 223. Under the force of the lock ramp 213, the pin shaft 223 will move outward, and the pin spring 224 will be compressed. When the handle screw 29 passes the lock hook plate 215 and enters the innermost part of the long slot of the lock side plate 212, the movement of the lock hook plate 215 is unrestricted. Under the force of the lock spring 216, the lock assembly 21 returns to its original position, and at the same time, the movement of the pin shaft 223 is unrestricted. Under the force of the pin spring 224, it returns to its original position. At this time, the four locks of the front and rear vehicles are closed, forming a self-locking system, and the two vehicles are locked.

[0028] Two-car back-to-back unlocking: Insert your finger into the quadrilateral hole of the lock bevel plate 213 and pull the lock bevel plate 213. The lock hook plate 215 is forced to rotate the lock assembly 21 around the lock bolt 217. At this time, the lock spring 216 will be compressed, and the front bevel of the lock bevel plate 213 will contact the pin shaft 223. Under the force of the lock hook plate 215, the pin shaft 223 will move outward. At this time, the pin spring 224 will be compressed. When the lock bevel plate 213 rotates to the point where the front circular hole is concentric with the pin shaft 223, the movement of the pin shaft 223 is unrestricted. Under the force of the pin spring 224, the pin shaft 223 enters the front circular hole of the lock bevel plate 213. At this time, the lock assembly 21 is fixed. After unlocking the four locks, the movement of the pull screw 29 will be unrestricted. Pull the rear car to separate the two cars and complete the unlocking. Pulling the pin handle 222 of the pin assembly 22 causes the pin shaft 223 to leave the front round hole of the lock plate 213. Under the force of the lock spring 216, the lock assembly 21 returns to its original position, making it convenient for the two vehicles to automatically lock next time they enter.

[0029] Folding: Squeeze the rotating plate 439 to make the locking assembly 21 of the base frame 4 rotate to the left around the bottom bolt 435. When the U-shaped rib 432 leaves the front end of the bottom hook plate 56, lift the base plate 5 so that it rotates upward around the connecting bolt 9. The bottom pin 423 will leave the round hole of the bottom U plate 55. When the base plate 5 is close to the left side plate 1, lift the sliding member 14. When the base plate 5 is close to the left side plate 1, lower the sliding member 14. At this time, the sliding plate 141 is embedded in the two small U plates 57, and the base plate 5 is folded and fixed.

[0030] Stacking: Push the folded left side of the front car into the rear car. The right side piece 3 of the rear car will be embedded in the right L-shaped wire 26 and the rear narrow tube 25 of the rear piece 2 of the front car (the gap between the U-shaped wire 27, L-shaped wire 26 and the rear narrow tube 25 of the rear piece 2 is used to embed the right side piece 3 of the rear car). At this time, the two cars are nested. By analogy, multiple cars can be nested and stacked, saving space when unloaded.

[0031] The embodiments described above are merely preferred embodiments of the present invention, and not all feasible embodiments of the present invention. Any obvious modifications made by those skilled in the art without departing from the principles and spirit of the present invention should be considered to be included within the scope of protection of the claims of the present invention.

Claims

1. A two-in-one vehicle, characterized in that, Includes a rear piece (2), and on both sides of the rear piece (2), a left piece (1) and a right piece (3) are connected by bolts (8). The left piece (1), the rear piece (2), and the right piece (3) are inserted into the base frame (4) and fixedly connected by bolts (8). Casters (7) are installed at the four corners of the bottom of the base frame (4). A chassis (5) is installed inside the base frame (4). A strap (6) is provided between the left piece (1) and the right piece (3).

2. The two-in-one vehicle according to claim 1, characterized in that, The left side plate (1) includes a side horizontal tube (11), a side horizontal plate (12), a side vertical tube (13), a sliding member (14), a left curved tube (15), a left side tube (16), a left inclined tube (17), and a left lower tube (18). The left curved tube (15) is welded to the top of the left side tube (16), the side horizontal tube (11) is welded to the bottom of the left side tube (16), and several side horizontal plates (12) are welded to the middle of the left side tube (16). The side horizontal plates (12) and the side horizontal tube (11) are all welded to the left curved tube (15). The side vertical tube (13) is welded to the left curved tube (15), the side horizontal plate (12), and the side horizontal tube (11). The sliding member (14) is slidably connected to the side vertical tube (13). The left inclined tube (17) and the left lower tube (18) are welded to the left side tube (16).

3. The two-in-one vehicle according to claim 2, characterized in that, The sliding component (14) includes a sliding plate (141) and a connecting bolt (142); the two sliding plates (141) are fitted and spliced ​​on the side vertical pipe (13) and fixed by the connecting bolts (142) on both sides.

4. The two-in-one vehicle according to claim 1, characterized in that, The rear section (2) includes a lock assembly (21), a pin assembly (22), a rear curved tube (23), a rear vertical tube (24), a rear narrow tube (25), an L-shaped wire (26), a U-shaped wire (27), a rear small tube (28), and a handle wire (29). A rear horizontal tube is welded to the bottom of the rear curved tube (23). Two rear vertical tubes (24) are welded between the rear curved tube (23) and the rear horizontal tube. Several rear narrow tubes (25) are distributed between the two rear vertical tubes (24). The rear narrow tubes (25) are welded between the rear curved tube (23) and the rear horizontal tube. The lock assembly (21) is welded to the pin assembly (22). Both the lock assembly (21) and the pin assembly (22) are welded to one side of the rear curved tube (23). An L-shaped wire (26) and a U-shaped wire (27) are provided between adjacent rear narrow tubes (25). A rear small tube (28) and a handle wire (29) are welded to the other side of the rear curved tube (23).

5. The two-in-one vehicle according to claim 4, characterized in that, The lock assembly (21) includes a front lock plate (211), a side lock plate (212), a bevel lock plate (213), a top lock plate (214), a hook lock plate (215), a lock spring (216), a lock bolt (217), a lock sleeve (218), and a horizontal lock tube (219). Two side lock plates (212) are welded to the end face of the front lock plate (211). The bevel lock plate (213), the top lock plate (214), and the hook lock plate (215) are welded in sequence. The lock bolt (10) passes through the two side lock plates (212) and the middle hook lock plate (215). The lock sleeves (218) on both sides of the lock hook plate (215) are fastened by lock nuts. Lock springs (216) are fitted on the lock sleeves (218). Lock bolts (217) are threaded to the bottom of the lock hook plate (215). Lock horizontal tubes (219) are welded between the two lock side plates (212). The lock spring (216) includes a front section (2161), a spring section (2162), and a middle section (2163). Both ends of the middle section (2163) are connected to the spring section (2162) and the front section (2161) to form an integral structure.

6. The two-in-one vehicle according to claim 4, characterized in that, The pin assembly (22) includes a pin tube (221), a pin handle (222), a pin shaft (223), and a pin spring (224). The pin shaft (223) is inserted into the pin tube (221), and the pin handle (222) is inserted into one end of the pin shaft (223), while the pin spring (224) is fitted onto the other end.

7. The two-in-one vehicle according to claim 1, characterized in that, The right side plate (3) includes a right bend pipe (31), a right vertical pipe (32), a right side pipe (33), and a side horizontal plate (12); the right side pipe (33) is welded to the right bend pipe (31), and several side horizontal plates (12) are welded between the right side pipe (33) and the right bend pipe (31), and the right vertical pipe (32) is welded to the right bend pipe (31) and the side horizontal plates (12).

8. The two-in-one vehicle according to claim 1, characterized in that, The chassis (5) includes a bottom horizontal tube (51), a chassis plate (52), a bottom vertical tube (53), a bottom L plate (54), a bottom U plate (55), a bottom hook plate (56), a small U plate (57), and a panel (58); two bottom vertical tubes (53) are welded between the two bottom horizontal tubes (51), and a panel (58) is welded between the bottom horizontal tubes (51) and the bottom vertical tubes (53); a wide U plate (581), a narrow U plate (582), and a support plate (583) are arranged and welded between the two bottom horizontal tubes (51); two chassis plates (52) and bottom L plates (54) are welded on one side of the bottom vertical tube (53), and two small U plates (57), two bottom hook plates (56), and two bottom U plates (55) are welded on the other side of the bottom vertical tube (53).

9. The two-in-one vehicle according to claim 1, characterized in that, The base frame (4) includes a main tube (420), a left rear plate (417) and a support tube (419) welded to one side of the main tube (420). The left rear plate (417) is welded to the left rear baffle (418). The left rear baffle (418) and the support tube (419) are both welded to the left flat tube (416). Two tubes (415), a left front plate (411), a front pad tube (413), and a left end plate (414) are welded to the left flat tube (416). The left front plate (411) is welded to the left front baffle (412). The left rear plate (417) and the left rear... Caster plates (429) are welded to the bottom of the baffle (418), support tube (419), left front plate (411), left front baffle (412), and front pad tube (413). On the other side of the main tube (420), the right rear plate (421), right baffle (422), and support tube (419) are welded in sequence. The right rear plate (421) and right baffle (422) are welded to the right flat tube (426). The right flat tube (426) is welded with a bottom pin (423), pad (424), connecting plate (425), and right end plate (427). The bottom of the right front tube (428), the front pad tube (413), the right front tube (428), the front pad tube (413), the support tube (419), the right rear plate (421), and the right baffle (422) are all welded with caster plates (429). The base frame lock assembly (430) is connected to the connecting plate (425) by connecting bolts three (438). The base frame lock assembly (430) includes a handle plate (431), a U-shaped rib (432), a side sleeve tube (433), and a lower plate (434) welded in sequence. The lower plate (434) is connected by bottom screws. The bolt (435) is connected to the rotating plate (439). An intermediate sleeve (436) is inserted between the two side sleeves (433). A torsion spring (437) is fitted on the intermediate sleeve (436). The connecting bolt (438) passes through the connecting plate (425), the two side sleeves (433), the intermediate sleeve (436), and is fastened by the lock nut. The torsion spring (437) includes a torsion spring middle section (4373). Both ends of the torsion spring middle section (4373) are connected to rotating springs (4372) and torsion spring rear section (4371) to form an integral structure.

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