Quick-release trailer hook for unmanned sweeper

Abstract

This invention relates to a quick-release tow hook for unmanned sweepers, comprising a support arm, a quick-release sleeve connected to the support arm, a right release hook assembly, and a left release hook assembly rotatably connected to the right release hook assembly. The right release hook assembly is detachably connected to the quick-release sleeve. The right release hook assembly includes a right release hook, a right release hook arm, a pivot for connecting the left release hook assembly, and an indexing pin connected to the quick-release sleeve. The left release hook assembly includes a left support hook arm and a U-shaped buckle. The U-shaped buckle is disposed on the left support hook arm. One end of the left support hook arm has a left release hook, and the other end of the left release hook arm has an elongated hole. A spring positioning pin is disposed on one side of the elongated hole. This invention not only enables quick assembly and disassembly, facilitating the storage of the towing structure, but is also applicable to different types of sweepers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned cleaning vehicles, in particular to a quick-release trailer hook for an unmanned cleaning vehicle. BACKGROUND

[0002] With the rapid development of technology, the technology of unmanned vehicles is becoming more and more mature, which brings a lot of convenience to our daily life, especially the application of unmanned cleaning vehicles, which can not only clean the daily street health, but also does not need manual operation throughout the process. However, when a fault occurs or maintenance is performed, how to send the unmanned cleaning vehicle to the maintenance center for repair becomes a problem we need to solve urgently.

[0003] Among them, the 500kg unmanned sweeper is mostly a three-wheeled chassis scheme. When the vehicle fails due to power system failure, battery feeding and other vehicle failures, the sweeper needs to be towed to the repair point for repair. During the towing process, how to ensure the stability of the vehicle body and conveniently and quickly install and remove the trailer hook is also a problem we need to solve urgently. SUMMARY

[0004] In view of the above problems, the present application provides a quick-release trailer hook for an unmanned cleaning vehicle, which can not only realize quick installation and quick release, but also conveniently realize the storage of the towing structure, and is suitable for different types of cleaning vehicles.

[0005] In order to achieve the above-mentioned purposes and other related purposes, the technical scheme provided by the present application is as follows:

[0006] A quick-release trailer hook for an unmanned cleaning vehicle, comprising a supporting arm, a quick-release sleeve connected with the supporting arm, a right unhooking assembly and a left unhooking assembly rotatably connected with the right unhooking assembly, the right unhooking assembly is detachably connected with the quick-release sleeve, the right unhooking assembly comprises a right unhooking, a right unhooking arm, a rotating shaft for connecting the left unhooking assembly and a dividing pin connected with the quick-release sleeve.

[0007] As a preferred, the left unhooking assembly comprises a left unhooking arm and a U-shaped buckle, the U-shaped buckle is arranged on the left unhooking arm, one end of the left unhooking arm is provided with a left unhooking, the other end of the left unhooking arm is provided with an oblong hole, one side of the oblong hole is provided with a spring positioning pin.

[0008] As a preferred, the left unhooking arm is integrally formed, and the left unhooking arm and the left unhooking are connected through bolts and nuts.

[0009] As a preferred, one end of the quick-release sleeve is provided with a standard hole, the standard hole is connected with the supporting arm through bolts, and the other end of the quick-release sleeve is provided with a half-circle groove.

[0010] Preferably, the quick-release sleeve is integrally formed, and the semi-circular groove is an R-shaped opening design.

[0011] Preferably, the right unhooking arm is integrally formed, and one end of the right unhooking arm is connected to the right unhooking hook, which is in the shape of a round hole.

[0012] Preferably, the left hook is a semi-circular hook.

[0013] Preferably, the right unhooking arm is Z-shaped, and a round pin hole is provided on one side of the right unhooking arm.

[0014] The present invention has the following positive effects:

[0015] 1. This invention, through a scissor-like relative rotation structure design, enables the trailer hook to quickly hook and position on both sides of the wheel axle. Due to the clamping of the rotating shaft and the two-point positioning, the wheel axle is completely positioned within the trailer hook assembly when hooking is completed, which can transmit towing force and steering torque, and the trailer hook will not come off at all.

[0016] 2. The tow hook and tow arm of this invention can be quickly installed and disassembled through the sleeve structure design, which can facilitate the storage of the towing structure and the universality of different tow vehicles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2-1 This is a schematic diagram (a) showing the connection between the right release arm and the quick-release sleeve of the present invention.

[0019] Figure 2-2 This is a schematic diagram (II) showing the connection between the right release arm and the quick-release sleeve of the present invention.

[0020] Figure 2-3 This is a schematic diagram (III) showing the connection between the right release arm and the quick-release sleeve of the present invention.

[0021] Figure 3-1 This is a schematic diagram (a) showing the connection between the present invention and the front steering wheel axle of the unmanned sweeper.

[0022] Figure 3-2 This is a schematic diagram (II) showing the connection between the present invention and the front steering wheel axle of the unmanned sweeper.

[0023] The labels in the diagram are as follows: 1—support arm, 2—quick-release sleeve, 21—standard hole position, 22—half-circle groove, 3—left release assembly, 31—left release, 32—left release arm, 33—spring positioning pin, 34—U-shaped buckle, 35—oblong hole, 4—right release assembly, 41—right release, 42—right release arm, 43—rotating shaft, 44—indexing pin, 45—round pin hole. Detailed Implementation

[0024] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0025] Example 1: As Figure 1 As shown, a quick-release tow hook for an unmanned sweeper includes a support arm 1, a quick-release sleeve 2 connected to the support arm 1, a right release hook assembly 4, and a left release hook assembly 3 rotatably connected to the right release hook assembly 4. The right release hook assembly 4 is detachably connected to the quick-release sleeve 2. The right release hook assembly 4 includes a right release hook 41, a right release hook arm 42, a pivot 43 for connecting the left release hook assembly 3, and an indexing pin 44 connected to the quick-release sleeve 2.

[0026] In this embodiment, the left unhooking assembly 3 includes a left hook arm 32 and a U-shaped buckle 34. The U-shaped buckle 34 is disposed on the left hook arm 32. One end of the left hook arm 32 is provided with a left unhooking hook 31, and the other end of the left unhooking hook arm 31 is provided with an elongated hole 35. A spring positioning pin 33 is provided on one side of the elongated hole 35.

[0027] When the spring positioning pin 33 of the left hook assembly 3 pops out, it can be directly inserted into the round pin hole 45 of the right hook arm 42; the rotating shaft 43 of the right hook assembly passes through the elongated hole 35 of the left hook arm 32 and is laterally positioned by a washer nut. This design can achieve the following effects:

[0028] When the spring locating pin of the left hook assembly is pulled up (the pin retracts), the left hook arm assembly can rotate around the right hook arm pivot and translate along the elongated hole.

[0029] When the spring positioning pin of the left tow hook assembly pops out and inserts into the pin hole of the right unhooking arm, the left and right unhooking arms achieve two-point length positioning through the spring pin and the rotating shaft, and achieve width direction fixation under the constraint of the axial positioning structure of the rotating shaft, thus forming a fixed tow hook structure.

[0030] In this embodiment, the left hook arm 32 is integrally formed, and the left unhooking arm 32 is connected to the left unhooking 31 by bolts and nuts.

[0031] In this embodiment, one end of the quick-release sleeve 2 is provided with a standard hole 21, which is connected to the support arm 1 by a bolt, and the other end of the quick-release sleeve 2 is provided with a semi-circular groove 22.

[0032] In this embodiment, the quick-release sleeve 2 is integrally formed, and the semi-circular groove 22 has an R-shaped opening design.

[0033] In this embodiment, the right unhooking arm 4 is integrally formed, and one end of the right unhooking arm 4 is connected to the right unhooking hook 41, which is in the shape of a round hole.

[0034] In this embodiment, the shape of the left hook 31 is a semi-circular hook.

[0035] In this embodiment, the right unhooking arm 42 is Z-shaped, and a round pin hole 45 is provided on one side of the right unhooking arm 42.

[0036] The main objective of this invention is to design a quick-release tow hook that allows for rapid hooking onto the front steering wheel axle of a vehicle, enabling direct towing of the steering wheel during rescue towing. This provides a smooth towing experience and allows steering force to be applied directly to the front steering axle during turns, enabling the wheels to roll and maintain a steering angle, preventing lateral slippage and wear on the vehicle, and reducing the load on the tow truck. The system also features a quick-release standard interface to facilitate the installation of tow arms of different sizes to accommodate various types of tow vehicles, and the tow arms are detachable for easy storage. Furthermore, this tow hook can be used for vehicle platooning or transport between different work areas, reducing unnecessary mileage and increasing the effective cleaning time per charge.

[0037] Example 2: Based on the quick-release tow hook for an unmanned sweeper in Example 1, the present invention will be further explained and described below.

[0038] As shown in Figures 2-1, 2-2, or 2-3, the sleeve-towing arm assembly can be disassembled from the tow hook assembly and stored separately, reducing the overall storage volume. When towing is required, the towing arm assembly and tow hook assembly can be quickly assembled into a single unit as follows:

[0039] T1. The sleeve-support arm assembly is tilted downwards, and the indexing pin is inserted obliquely downwards along the semi-circular groove of the sleeve. As the indexing pin of the right rotating arm is gradually inserted into the semi-circular groove of the sleeve, the sleeve also needs to be gradually swung up to be horizontal with the right rotating arm, so that the large diameter end of the indexing pin is finally inserted into the arc of the semi-circular groove of the sleeve.

[0040] T2. When the large diameter end of the indexing pin is aligned with the arc of the semi-circular groove of the sleeve, the small diameter end (ejection end) of the indexing pin is also aligned with the pin hole of the sleeve. At this time, the indexing pin is ejected, and the sleeve and the right rotating arm are locked along the length direction.

[0041] T3. When the indexing pin pops out and locks, the sleeve is positioned against the left, right, and lower sides of the right swing arm, and the sleeve-swing arm assembly can only swing downwards. Since the towing force is always diagonally upwards when towing a vehicle, the towing arm-towing hook assembly enables the vehicle to move forward, backward, and turn without rotation.

[0042] T4. Once the assembly has been disassembled by dragging, simply reverse the steps T1-T3.

[0043] As shown in Figure 3-1 or Figure 3-2, during towing, first rotate the left tow hook assembly upwards and pull it backwards to its rear limit point to ensure that the left tow hook can avoid the outer circle of the vehicle; then, from right to left, insert the round hole of the right tow hook into the front wheel axle and push it to the positioning step; after the right tow hook is installed in place, move the left tow hook forward and hook it onto the front wheel axle; after the left tow hook is hooked in place, the left spring pin will align with the right hook arm pin hole, and the spring pin will naturally pop out and be removed into the right pin hole. At this time, the tow hook assembly and the front wheel axle are hooked, and the lateral, longitudinal, and vertical displacements of the tow hook and the wheel axle are firmly restrained, and the tow hook assembly can only swing around the wheel axle.

[0044] In summary, this invention not only enables quick assembly and disassembly and facilitates the storage of the towable structure, but is also applicable to different types of sweepers.

[0045] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A quick-release tow hook for an unmanned sweeper vehicle, characterized in that: The system includes a support arm (1), a quick-release sleeve (2) connected to the support arm (1), a right support hook assembly (4), and a left support hook assembly (3) rotatably connected to the right support hook assembly (4). The right support hook assembly (4) is detachably connected to the quick-release sleeve (2). The right support hook assembly (4) includes a right support hook (41), a right support hook arm (42), a pivot (43) for connecting the left support hook assembly (3), and an indexing pin (44) connected to the quick-release sleeve (2). The left support hook assembly (3) includes a left support hook arm (32). The U-shaped buckle (34) is set on the left support arm (32). One end of the left support arm (32) is provided with a left support hook (31), and the other end of the left support arm (32) is provided with an elongated hole (35). A spring positioning pin (33) is provided on one side of the elongated hole (35). One end of the quick-release sleeve (2) is provided with a standard hole (21). The standard hole (21) is connected to the support arm (1) by a bolt. The other end of the quick-release sleeve (2) is provided with a semi-circular groove (22).

2. The quick-release tow hook for unmanned sweeping vehicles according to claim 1, characterized in that: The left hook arm (32) is integrally formed, and the left hook arm (32) is connected to the left hook (31) by bolts and nuts.

3. The quick-release tow hook for unmanned sweeping vehicles according to claim 1, characterized in that: The quick-release sleeve (2) is integrally formed, and the semi-circular groove (22) is designed with an R-shaped opening.

4. The quick-release tow hook for unmanned sweeping vehicles according to claim 1, characterized in that: The right support hook arm (42) is integrally formed, and one end of the right support hook arm (42) is connected to the right support hook (41), which is a round hole shape.

5. The quick-release tow hook for an unmanned sweeper according to claim 1, characterized in that: The left hook (31) is a semi-circular hook.

6. The quick-release tow hook for an unmanned sweeper according to claim 1, characterized in that: The right support hook arm (42) is Z-shaped, and a round pin hole (45) is provided on one side of the right support hook arm.

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