A cargo box detachable vehicle and a method of using the same

Abstract

The application discloses a detachable truck and a use method thereof, and relates to the application field of freight loading and unloading equipment in the logistics industry. The detachable truck comprises a chassis, a cargo box arranged above the chassis, and a subframe fixed to the top of the chassis. A hook tail is fixed to the top surface of the subframe, and a hook head is fixed to the bottom surface of the cargo box. The hook head is opposite to the hook tail. A hook tongue is arranged in the hook head and the hook tail. A rotating shaft is arranged in the middle of the hook tongue. When the cargo box is installed, the hook head and the hook tail can collide under the gravity of the cargo box, the hook tongues in the hook head and the hook tail are connected with each other, and then the hook tongues are locked. The detachable truck has the advantages that the installation and dismounting of the cargo box can be realized by controlling the driving device through a pull-out type remote controller, the hook tongue structure is reliable in connection, the cargo box can be completely locked, and the cargo box can be prevented from sliding out of the chassis.

Description

Technical Field

[0001] This invention relates to the application of cargo loading and unloading equipment in the logistics industry, and in particular to a vehicle with a detachable cargo box and its usage method. Background Technology

[0002] In the freight industry, trucks with detachable cargo boxes are of paramount importance, offering logistics and transportation companies a significant competitive advantage through their flexibility and efficiency. Firstly, these trucks allow for rapid loading and unloading, significantly reducing time and costs. Secondly, the detachable cargo box provides greater maneuverability when navigating narrow roads or bridges. Furthermore, the separation of the cargo box from the chassis reduces the overall length of the vehicle, making it easier to navigate urban roads. In addition, these trucks offer improved safety due to the more stable and robust connection between the cargo box and chassis, reducing cargo loss and vehicle accidents during transport. In short, trucks with detachable cargo boxes play an irreplaceable role in the freight industry, improving transportation efficiency, reducing costs, and enhancing safety, making them an ideal choice for logistics and transportation companies.

[0003] To achieve a detachable connection between the cargo box and the chassis, a manual locking device is typically used. The manual locking device consists of a mechanical handle and a linkage. By rotating the handle, the linkage can be extended or shortened, thereby securely locking the cargo box to the chassis.

[0004] However, the manual locking device requires manual operation by the driver, which may result in incomplete locking during operation. If the manual locking device is not fully locked during driving, the cargo box may slide off the chassis, which poses a great safety hazard. Summary of the Invention

[0005] This invention addresses the problem that manual locking devices may fail to lock the cargo box by providing a detachable cargo box vehicle that can achieve complete locking of the cargo box and its usage method.

[0006] To solve the above problems, the technical solution adopted by this invention is as follows: a detachable cargo box vehicle, including a chassis, a cargo box mounted on top of the chassis, a subframe fixed on top of the chassis, a hook tail fixed on the upper surface of the subframe, and a hook head fixed on the lower surface of the cargo box. The hook head is positioned corresponding to the hook tail. Both the hook head and hook tail have hook tongues inside, and a rotating shaft is provided in the middle of the hook tongues. When installing the cargo box, the hook head and hook tail collide under the weight of the cargo box, causing the hook tongues inside the hook head and hook tail to hook together and then lock the hook tongues. During cargo box installation, the cargo box is first placed on the subframe. Due to the weight of the cargo box, the hook head and hook tail collide, causing the hook tongues inside the hook head and hook tail to hook together and then lock the hook tongues, completing the cargo box installation. When removing the cargo box, the hook tongues are first unlocked, and then the cargo box is lifted, causing the hook tongues inside the hook head and hook tail to separate, thus completing the cargo box removal. In summary, the hook head and hook tail of this invention are subjected to the gravity of the cargo box, which allows them to cooperate fully, thereby ensuring that the hook tongue can be completely locked and preventing any situation where the locking is not in place, thus guaranteeing driving safety.

[0007] Preferably, the hook head is provided with a locking bar that passes through the hook head. A locking block is fixed to one end of the locking bar. The hook tongue is provided with a slot, and a fixing rod is installed in the slot. One end of the fixing rod is set in the slot, and the other end of the fixing rod is fixedly connected to the other end of the locking bar. When the hook head and hook tail collide, the hook tongue will rotate around the rotation axis. This will drive the fixing rod in the slot to rotate. The rotation of the fixing rod will then drive the rotation of the locking bar, which in turn will drive the rotation of the locking block. At this time, fixing the locking block will secure the locking tongue.

[0008] Preferably, a spring is fitted onto the outer surface of the locking bar, with one end of the spring fixedly connected to the hook head and the other end fixedly connected to the outer surface of the locking bar. When the spring is in a naturally relaxed state, the hook tongues inside the hook head and hook tail are separated. When the hook head and hook tail collide, the rotation of the hook tongues causes the locking bar to rotate, putting the spring in a stretched state. When the hook head and hook tail separate, the hook tongues remain separated due to the spring's elasticity, thus ensuring that the hook head and hook tail can always cooperate smoothly.

[0009] Preferably, the lock block has a limiting groove, inside which a limiting rod is installed. A connecting rod is attached to the limiting rod, with one end of the connecting rod fixedly connected to one end of the limiting rod, and the other end of the connecting rod having a driving device. When the cargo box is separated from the subframe, the opening of the limiting groove is angled downwards. When the cargo box is installed on the subframe, the lock block rotates, causing the opening of the limiting groove to become horizontal. At this time, the connecting rod moves under the drive of the driving device, pushing the limiting rod into the limiting groove, thus securing the locking tongue.

[0010] Preferably, the drive unit includes a lateral telescopic cylinder, with support legs fixed at both ends. One end of each support leg is fixedly connected to the cargo box, and the other end of each support leg is equipped with a vertical telescopic cylinder. The other end of a connecting rod is fixed to the support leg. The lateral telescopic cylinder can push the connecting rod and simultaneously retract the support leg to prevent damage to it, while the vertical telescopic cylinder allows the cargo box to be stably mounted on the subframe.

[0011] Preferably, the upper end of the vertical telescopic cylinder is hinged to the support leg, and an oblique telescopic cylinder is provided on the horizontal telescopic cylinder. One end of the oblique telescopic cylinder is hinged to the horizontal telescopic cylinder, and the other end of the oblique telescopic cylinder is hinged to the vertical telescopic cylinder. By contracting the oblique telescopic cylinder, the vertical telescopic cylinder can be rotated along the hinge, thereby achieving the protection function of the vertical telescopic cylinder.

[0012] Preferably, the subframe is equipped with guide pins. These guide pins guide the cargo box to fall into the correct position.

[0013] Preferably, the cargo box is equipped with a hub. The hub protects oil pipes, air pipes, and wiring harness connectors.

[0014] Preferably, a pull-out remote control is installed on the chassis. The drive device can be easily and conveniently controlled by using the pull-out remote control.

[0015] A method for using a vehicle with a detachable cargo box, the method comprising the following steps:

[0016] (1) Install the cargo box: Drive the chassis to the designated position under the cargo box, adjust the position of the cargo box to align the cargo box with the subframe, and then slowly lower the cargo box to ensure that the cargo box is placed stably on the subframe;

[0017] (2) Securing the cargo box: The hook head on the lower surface of the cargo box collides with the hook tail on the upper surface of the subframe, the hook tongues hook together, and then the hook tongues are locked. The hook head and hook tail are subjected to the gravity of the cargo box, so they can work together perfectly;

[0018] (3) Unload the cargo box: Release the locking state of the hook tongue, lift the cargo box, and separate the cargo box from the subframe.

[0019] As can be seen from the above technical solution, the advantages of this invention are as follows: When installing the cargo box, the hook tongues inside the hook head and hook tail will hook together, and the slot of the upper limit groove of the locking block will become horizontal. By using a pull-out remote control, the horizontal telescopic cylinder can be controlled to push the limit rod into the limit groove, locking the locking block and thus locking the hook tongue. When removing the cargo box, the horizontal telescopic cylinder is also controlled by the pull-out remote control to disengage the limit rod from the limit groove, and then the vertical telescopic cylinder is controlled to lift the cargo box, opening the chassis and completing the separation of the cargo box and the chassis. In summary, this invention only requires the pull-out remote control to control the drive device to realize the installation and removal of the cargo box, and the hook tongue structure is reliable, which can completely lock the cargo box and prevent the cargo box from sliding out of the chassis. Attached Figure Description

[0020] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural diagram of a specific embodiment of the present invention. Figure 1 .

[0022] Figure 2 This is a structural diagram of a specific embodiment of the present invention. Figure 2 .

[0023] Figure 3 This is a structural diagram of a specific embodiment of the present invention. Figure 3 .

[0024] Figure 4 This is a bottom view of the cargo box in a specific embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of the driving device in a specific embodiment of the present invention. Figure 1 .

[0026] Figure 6 This is a schematic diagram of the structure of the driving device in a specific embodiment of the present invention. Figure 2 .

[0027] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle.

[0028] Figure 8 This is a cross-sectional view of the connecting hook in a specific embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the pull-out remote control in a specific embodiment of the present invention.

[0030] In the diagram: 1. Chassis, 2. Pull-out remote control, 3. Cargo box, 31. Lateral telescopic cylinder, 32. Vertical telescopic cylinder, 33. Angled telescopic cylinder, 34. Support leg, 35. Hub cable, 36. Connecting rod, 361. Limiting rod, 37. Hook head, 371. Locking rod, 372. Locking block, 373. Limiting groove, 374. Spring, 4. Subframe, 41. Guide pin, 42. Hook tail, 43. Hook tongue, 44. Rotating shaft, 45. Slot, 46. Fixing rod. Detailed Implementation

[0031] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0032] Example 1: A detachable cargo box vehicle includes a chassis 1, a subframe 4 welded on the chassis 1, a cargo box 3 mounted on the subframe 4, a connecting hook between the cargo box 3 and the subframe 4, and a pull-out remote control 2 on the chassis 1. The connecting hook can be easily controlled by the pull-out remote control 2 to achieve a detachable connection between the cargo box 3 and the subframe 4.

[0033] like Figure 1 , 2 As shown, in this specific embodiment, the subframe 4 adopts the following structure: the subframe 4 is a sturdy steel frame, which is fixed to the top of the chassis 1 by welding. Guide pins 41 are provided on the subframe 4, with the axis of the guide pins 41 perpendicular to the subframe 4. One end of the guide pin 41 is welded to the subframe 4. In this embodiment, four guide pins 41 are provided, evenly distributed on the subframe 4. The guide pins 41 can guide the cargo box 3 to fall in the correct position.

[0034] like Figure 4 As shown, in this specific embodiment, the cargo box 3 adopts the following structure: the cargo box 3 includes a box body, and a driving device is provided below the box body. The driving device includes a transverse telescopic cylinder 31, the two ends of which can retract towards the middle. Support legs 34 are welded to both ends of the transverse telescopic cylinder 31. One end of the support leg 34 is welded to the bottom of the box body, and a connecting rod 36 is provided on the support leg 34, such as... Figure 5-7As shown, one end of the connecting rod 36 is welded to the support leg 34, and the other end of the connecting rod 36 is welded to the limit rod 361. A vertical telescopic cylinder 32 is provided at the other end of the support leg 34. The upper end of the vertical telescopic cylinder 32 is connected to the support leg 34 via a hinge. An oblique telescopic cylinder 33 is provided on the horizontal telescopic cylinder 31. One end of the oblique telescopic cylinder 33 is connected to the horizontal telescopic cylinder 31 via a hinge, and the other end of the oblique telescopic cylinder 33 is connected to the vertical telescopic cylinder 32 via a hinge. In this embodiment, two sets of drive devices are provided, respectively located at both ends of the cargo box 3. A manifold 35 is also provided below the cargo box 3, which protects the oil pipes, air pipes, and wiring harness connectors.

[0035] like Figure 8 As shown, in this specific embodiment, the connecting hook adopts the following structure: The connecting hook includes a hook head 37 and a hook tail 42. The hook head 37 is welded to the lower surface of the cargo box 3, and the hook tail 42 is welded to the upper surface of the subframe 4. The position of the hook head 37 corresponds to that of the hook tail 42. Both the hook head 37 and the hook tail 42 have cavities inside, and each cavity has a hook tongue 43. A rotating shaft 44 is provided in the middle of the hook tongue 43, and the rotating shaft 44 is fixed in the cavities of the hook head 37 and the hook tail 42 respectively. The two hook tongues 43 can rotate around the rotating shaft 44 to hook or separate from each other. A locking rod 371 is provided on the hook head 37, penetrating the hook head 37. The locking rod 371 is rotatable, and a locking block 372 is welded to one end of the locking rod 371. A slot 45 is provided on the hook tongue 43, and a fixing rod 46 is installed in the slot 45. One end of the fixing rod 46 is inserted into the slot 45, and the other end of the fixing rod 46 is welded to the other end of the locking rod 371. A spring 374 is sleeved on the outer circumference of the locking rod 371. One end of the spring 374 is welded to the hook head 37, and the other end of the spring 374 is welded to the outer circumference of the locking rod 371. When the spring 374 is in a relaxed state, the hook tongue 43 of the hook head 37 and the hook tail 42 are in a separated state. A limiting groove 373 is provided on the locking block 372, and the size of the groove 373 is adapted to the limiting rod 361. In this embodiment, a total of four sets of connecting hooks are provided.

[0036] Example 2: A method of using the detachable cargo box vehicle as described in Example 1: When installing the cargo box 3, first drive the chassis 1 to the designated position under the cargo box 3. Then, as... Figure 3 As shown, connect the oil pipes, air pipes, and wiring harness connectors of chassis 1 to the oil pipes, air pipes, and wiring harness connectors inside the manifold 35 below the cargo box 3. Then, as... Figure 9As shown, the vertical telescopic cylinder 32 retracts under the control of button A on the pull-out remote control 2. Under the weight of the cargo box, the cargo box 3 slowly descends. During its descent, the cargo box 3 first contacts the guide pin 41, which guides the cargo box 3 to fall in the correct position. The hook head 37 on the cargo box 3 gradually contacts and collides with the hook tail 42 on the subframe 4. The hook tongues 43 inside the hook head 37 and hook tail 42 rotate and hook each other. During this process, the slot 45 rotates synchronously, driving the fixing rod 46 to rotate. The rotation of the fixing rod 46, in turn, drives the locking rod 371 to rotate synchronously, thereby causing the locking block 372 to rotate. When the hook head 37 and hook tail 42 are fully in contact, the opening direction of the limiting groove 373 on the locking block 372 becomes horizontal. Simultaneously, the rotation of the locking rod 371 stretches the spring 374. After the cargo box 3 has finished descending, the vertical telescopic cylinder 32 continues to retract under the control of button A on the pull-out remote control 2 until it is fully retracted. Then, the lateral telescopic cylinder 31 is retracted via button B until it is fully retracted. During the lateral retraction, the limiting rod 361 on the connecting rod 36 moves into the limiting groove 373 on the locking block 372. At this time, the limiting rod 361 will lock the locking block 372, thereby locking the hook tongue 43. Finally, the oblique telescopic cylinder 33 is retracted via button C on the pull-out remote control 2. The retraction of the oblique telescopic cylinder 33 will cause the vertical telescopic cylinder 32 to fold inward. Finally, the pull-out remote control 2 is placed in the fixed position on the chassis 1 to complete the installation of the cargo box 3.

[0037] When disassembling the cargo box 3, firstly, the lateral telescopic cylinder 31 is extended using button B on the pull-out remote control 2. During the extension, the limiting rod 361 gradually disengages from the limiting hole, unlocking the hook tongue 43. After extending laterally to the designated position, the oblique telescopic cylinder 33 is extended using button C until the vertical telescopic cylinder 32 is in a vertical position. Next, the vertical telescopic cylinder 32 is extended using button A until it contacts the ground. Subsequently, the vertical telescopic cylinder 32 continues to extend, slowly lifting the cargo box 3. During the lifting process, the hook head 37 on the cargo box 3 gradually disengages from the hook tail 42 on the subframe 4, and the spring 374 releases its elastic force, keeping the hook tongue 43 in the open position. Finally, the oil pipe, air pipe, and wiring harness connector connecting the chassis 1 and the cargo box 3 are disassembled. At this point, the cargo box 3 is completely separated from the chassis 1, and the chassis 1 can be driven away at any time.

[0038] As can be seen from the above embodiments, the beneficial effects of the present invention are as follows: When installing the cargo box, the hook tongues inside the hook head and hook tail will hook together, and the slot of the upper limit groove of the locking block will become horizontal. By using a pull-out remote control, the horizontal telescopic cylinder can be controlled to push the limit rod into the limit groove, locking the locking block and thus locking the hook tongue. When removing the cargo box, the horizontal telescopic cylinder is also controlled by the pull-out remote control to disengage the limit rod from the limit groove, and then the vertical telescopic cylinder is controlled to lift the cargo box, opening the chassis and completing the separation of the cargo box and the chassis. In summary, the present invention only requires the control of the drive device by a pull-out remote control to realize the installation and removal of the cargo box, and the hook tongue structure connection is reliable, which can completely lock the cargo box and prevent the cargo box from sliding out of the chassis.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle with a detachable cargo box, comprising a chassis (1) and a cargo box (3) disposed on top of the chassis (1), characterized in that, A subframe (4) is fixed above the chassis (1). A hook tail (42) is fixed on the upper surface of the subframe (4). A hook head (37) is fixed on the lower surface of the cargo box (3). The position of the hook head (37) corresponds to the hook tail (42). A hook tongue (43) is provided inside both the hook head (37) and the hook tail (42). A rotating shaft (44) is provided in the middle of the hook tongue (43). When the cargo box (3) is installed, the hook head (37) and the hook tail (42) can collide under the gravity of the cargo box (3), so that the hook tongue (43) inside the hook head (37) and the hook tail (42) hook each other, and then the hook tongue (43) is locked. A locking bar (371) is provided on the hook head (37) and passes through the hook head (37). A locking block (372) is fixed to one end of the locking bar (371). A slot (45) is provided on the hook tongue (43). A fixing rod (46) is installed in the slot (45). One end of the fixing rod (46) is set in the slot (45), and the other end of the fixing rod (46) is fixedly connected to the other end of the locking bar (371). A limit groove (373) is provided on the locking block (372), and a limit rod (361) is installed inside the limit groove (373). A connecting rod (36) is provided on the limiting rod (361). One end of the connecting rod (36) is fixedly connected to one end of the limiting rod (361). The other end of the connecting rod (36) is provided with a driving device. The driving device includes a transverse telescopic cylinder (31). Both ends of the transverse telescopic cylinder (31) are fixed with support legs (34). One end of the support leg (34) is fixedly connected to the cargo box (3). The other end of the support leg (34) is provided with a vertical telescopic cylinder (32). The other end of the connecting rod (36) is fixed on the support leg (34).

2. The detachable cargo box vehicle according to claim 1, characterized in that, A spring (374) is fitted onto the outer surface of the locking bar (371). One end of the spring (374) is fixedly connected to the hook (37), and the other end of the spring (374) is fixedly connected to the outer surface of the locking bar (371).

3. The detachable cargo box vehicle according to claim 1, characterized in that, The upper end of the vertical telescopic cylinder (32) is hinged to the support leg (34). An oblique telescopic cylinder (33) is provided on the horizontal telescopic cylinder (31). One end of the oblique telescopic cylinder (33) is hinged to the horizontal telescopic cylinder (31), and the other end of the oblique telescopic cylinder (33) is hinged to the vertical telescopic cylinder (32).

4. The detachable cargo box vehicle according to claim 1, characterized in that, The subframe (4) is equipped with a guide pin (41).

5. The detachable cargo box vehicle according to claim 1, characterized in that, A hub pipe (35) is installed on the cargo box (3).

6. The detachable cargo box vehicle according to any one of claims 1-5, characterized in that, A pull-out remote control (2) is installed on the chassis (1).

7. A method of using a vehicle with a detachable cargo box as described in claim 6, characterized in that, The method of use includes the following steps: (1) Install the cargo box: Drive the chassis (1) to the designated position below the cargo box (3), adjust the position of the cargo box (3) so that the cargo box (3) is aligned with the subframe (4), and then slowly lower the cargo box (3) to ensure that the cargo box (3) is placed stably on the subframe (4); (2) Fixing the cargo box: The hook head (37) on the lower surface of the cargo box (3) and the hook tail (42) on the upper surface of the subframe (4) collide with each other, the hook tongues (43) hook each other, and then the hook tongues (43) are locked. (3) Unload the cargo box: Release the locking state of the hook tongue (43), lift the cargo box (3) to separate the cargo box (3) from the subframe (4).

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