Adjustable pulley bracket device for ejection of unmanned aerial vehicle

Abstract

The utility model relates to an adjustable unmanned aerial vehicle catapulting tackle bracket device which comprises a catapulting tackle and a catapulting bracket, and the catapulting tackle comprises a tackle table top, a tackle left side plate, a tackle right side plate, rolling wheels, rolling wheel shafts and an arresting headstock. The ejection bracket comprises a front left sliding groove bracket, a front right sliding groove bracket, a rear supporting bracket, a gear, a sliding rail, a locking cap, a spring, a rear supporting bracket support, a spring support, a rolling shaft, a rack, a lightening hole and a connecting rod. The device has the advantages of being simple in structure, adjustable, not prone to damage, capable of being suitable for unmanned aerial vehicles of different specifications and sizes and the like.

Description

Technical Field

[0001] This utility model relates to the field of drone catapult technology, specifically to an adjustable drone catapult trolley bracket device. Background Technology

[0002] Catapult launch is one of the important launch methods for drones. Specifically, it refers to the process where the drone is mounted on a trolley system that moves on a guide rail. External energy is used to accelerate the trolley system, which then propels the drone. Under certain conditions, the trolley system detaches from the drone, allowing it to take off. Currently, drone catapult devices include rubber band catapults, pneumatic / hydraulic catapults, and electromagnetic catapults, each suitable for launching drones of different weights, leading to the development of various trolley support devices.

[0003] The existing trolley bracket devices have certain shortcomings: First, they lack adjustability and are only suitable for launching certain or a few specific models of UAVs, which affects the universality of trolley bracket devices in the market; second, their structure is relatively complex, often consisting of multiple parts, making them difficult to manufacture and install, and resulting in high maintenance costs.

[0004] Therefore, there is a need to invent an adjustable trolley bracket device for launching drones, which can be used for drones of different sizes and features simple structure, convenient installation, and low cost of use and maintenance. Summary of the Invention

[0005] To address the aforementioned problems, this utility model proposes an adjustable trolley bracket device for launching unmanned aerial vehicles (UAVs), thereby solving the problem of the limited application scope of existing technologies.

[0006] This utility model is achieved through the following technical solution.

[0007] An adjustable UAV catapult launch trolley bracket device includes a catapult trolley and a catapult bracket. The catapult trolley includes a trolley platform, a left trolley plate, a right trolley plate, rolling wheels, roller shafts, and an arresting head. The lower end of the trolley platform is fixedly connected to the upper ends of the left and right trolley plates. The rolling wheels are rotatably connected to the left and right trolley plates via roller shafts. The arresting head is fixedly connected to the front ends of the left and right trolley plates. The catapult bracket includes a front left slide rail bracket, a front right slide rail bracket, a rear support bracket, gears, slide rails, locking caps, springs, a rear support bracket support, a spring support, rolling shafts, racks, weight-reducing holes, and connecting rods. The catapult bracket is fixed to the trolley platform. The front left slide bracket and the front right slide bracket are arranged in the slide rail. The slide rail is fixedly connected to the trolley platform by fixing bolts and nuts. The gear is fixedly connected to the trolley platform by locking caps, fixing bolts and nuts. The front left slide bracket and the front right slide bracket are provided with racks that mesh with the gears. The front left slide bracket and the front right slide bracket are provided with weight reduction holes. One end of the rear support bracket is rotatably connected to the rear support bracket support by a rolling shaft. One end of the spring is rotatably connected to the middle of the rear support bracket by a connecting rod. The other end of the spring is rotatably connected to the spring support. The spring support and the rear support bracket support are fixedly connected to the trolley platform by fixing bolts and nuts.

[0008] Furthermore, the front left and front right slide brackets are centrally symmetrical structures, with forward-opening slides and clamping arms at their upper ends. They utilize slide rails and gears to achieve pulling along the UAV's wingspan, suitable for supporting UAV wings of different sizes and lengths. Circular weight-reduction holes are provided, which not only reduce the weight of the ejection bracket itself but also allow for position locking of the front left and front right slide brackets via fixing bolts, ensuring their stability. The gears have annular grooves that match the locking caps with annular bosses, further enhancing their ability to withstand high overloads during launch.

[0009] Furthermore, the rear support bracket adopts a circular tube structure, and the rear fuselage of the UAV is lifted and separated through spring supports, springs, rear support bracket supports and rolling shafts. The lifting height can be adjusted up and down and rotated according to the needs of the UAV. The spring is used to decelerate the trolley. By pulling the connecting rod, the rear support bracket is rotated downward, so that the UAV is effectively separated from the rear support bracket without affecting the take-off of the UAV.

[0010] Furthermore, the ejection trolley also includes a traction hook, which is symmetrically fixedly connected to the front and rear ends of the left and right side plates of the trolley. The traction hook is used to connect the traction rope, and the traction rope is used to drag the trolley bracket device in the track to accelerate and retract.

[0011] The ejection trolley and ejection bracket described in this utility model are made of aluminum alloy to meet the requirements of lightweight design. They have the advantages of simple structure, adjustability, not easy to be damaged, and applicability to drones of different sizes.

[0012] Compared with the prior art, the advantages of this utility model are: by setting an arresting head, the ability of the catapult to resist arresting impact can be enhanced, and the overall service life can be improved; by setting gears and slide rails, and designing racks for the front left slide bracket and the front right slide bracket to pull along the wingspan direction of the UAV, the upper end of the slide bracket is provided with a slide with an opening facing forward and a clamping arm, which is suitable for lifting UAV wings of different sizes and lengths; the rear support bracket adopts a round tube structure, and by setting spring supports, springs, rear support bracket supports and rolling shafts, the UAV body can be lifted and effectively separated, and the lifting height can be adjusted up and down and rotated according to the needs of the UAV, which has good versatility. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is the front view of the present invention;

[0015] Figure 3 This is a top view of the present invention;

[0016] Figure 4 This is a side view of the present invention;

[0017] Figure 5 This is a schematic diagram of the gear structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the locking cap structure of this utility model.

[0019] Reference numerals in the attached diagram: ejector trolley-1, trolley platform-101, left side plate of trolley-102, right side plate of trolley-103, rolling wheel-104, rolling wheel shaft-105, blocking head-106, traction hook-107, ejector bracket-2, front left slide rail bracket-201, front right slide rail bracket-202, gear-203, slide rail-204, locking cap-205, slide rail-206, clamping arm-207, rear support bracket-208, spring-209, rear support bracket support-210, spring support-211, rolling shaft-212, rack-213, weight reduction hole-214, connecting rod-215, fixing bolt-3, nut-301. Detailed Implementation

[0020] To enhance understanding of this utility model, it will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an adjustable UAV catapult launch trolley bracket device includes a catapult trolley 1 and a catapult bracket 2. The catapult trolley includes a trolley platform 101, a left trolley plate 102, a right trolley plate 103, a rolling wheel 104, a roller axle 105, and an arresting head 106. The lower end of the trolley platform 101 is fixedly connected to the upper end of the left trolley plate 102 and the right trolley plate 103. In this embodiment, the trolley platform is fixed to the left trolley plate and the right trolley plate by welding. The rolling wheel 104 is connected to the roller axle 105. The catapult is rotatably connected to the left side plate 102 and the right side plate 103 of the trolley. In this embodiment, the left and right side plates of the trolley are symmetrically provided with six rolling wheels, which are connected to the roller shafts via bearings and fixed to the inner end faces of the left and right side plates of the trolley by nuts. The arresting head 106 is fixedly connected to the front end of the left side plate 102 and the right side plate 103 of the trolley. In this embodiment, the arresting head is connected to the front end face of the left and right side plates of the trolley by bolts. The arresting head can be modified according to the actual arresting device such as the arresting rope. The catapult has a simple structure. The left and right side plates of the trolley adopt a triangular and circular hollow design to reduce the weight of the catapult itself. The arresting head is added to the head of the trolley to enhance the catapult's ability to resist arresting impacts and improve its service life.

[0022] The ejection bracket 2 includes a front left slide bracket 201, a front right slide bracket 202, a rear support bracket 208, a gear 203, a slide rail 204, a locking cap 205, a spring 209, a rear support bracket support 210, a spring support 211, a rolling shaft 212, a rack 213, a weight reduction hole 214, and a connecting rod 215. The ejection bracket 2 is fixed on the trolley platform 101. The front left slide bracket 201 and the front right slide bracket 202 are arranged in the slide rail 204. The slide rail 204 is fixedly connected to the trolley platform 101 by fixing bolts 3 and nuts 301. The gear 203 is connected to the trolley platform by locking caps 205, fixing bolts 3, and nuts 301. The front left slide bracket 201 and the front right slide bracket 202 are fixedly connected to the trolley platform 101. The front left slide bracket 201 and the front right slide bracket 202 are equipped with racks 213 that mesh with gears 203. The front left slide bracket 201 and the front right slide bracket 202 are also equipped with weight-reducing holes 214. One end of the rear support bracket 208 is rotatably connected to the rear support bracket support 210 via a rolling shaft 212. One end of the spring 209 is rotatably connected to the middle of the rear support bracket 208 via a connecting rod 215. The other end of the spring 209 is rotatably connected to a spring support 211. The spring support 211 and the rear support bracket support 210 are fixedly connected to the trolley platform 101 via fixing bolts 3 and nuts 301. In this embodiment, the number and size of the fixing bolts and nuts can be determined according to actual needs to ensure that the front left slide bracket, the front right slide bracket, and the rear support bracket meet the structural strength and stability requirements.

[0023] like Figure 2 , Figure 5 , Figure 6 As shown, the front left slide bracket 201 and the front right slide bracket 202 are centrally symmetrical structures with a rack 213. The upper ends of the front left slide bracket 201 and the front right slide bracket 202 are provided with forward-opening slides 206 and clamping arms 207. The slide rail 204 and the gear 203 are used to pull along the wingspan of the UAV, which is suitable for supporting UAV wings of different sizes and lengths. A circular weight-reducing hole 214 is provided, which can reduce the weight of the ejection bracket itself, and the position of the front left slide bracket 201 and the front right slide bracket 202 can be locked by the fixing bolt 3 to ensure the stability of the front left slide bracket and the front right slide bracket. The gear 203 is provided with an annular groove that matches the locking cap 205 with an annular boss, which further enhances the ability to withstand the large overload during the launch process. In this embodiment, both the front left slide bracket and the front right slide bracket are equipped with racks and weight-reducing holes, which are set in the slide rail. They are fixed by fixing bolts and locking caps that are compatible with the weight-reducing holes. The slide rail and the trolley table can be fixed by bolts or other means, and the locking cap is fixed to the trolley table by bolts.

[0024] The rear support bracket 208 adopts a circular tube structure. It achieves the lifting and separation of the UAV's rear fuselage through a spring support 211, a spring 209, a connecting rod 215, a rear support bracket support 210, and a rolling shaft 212. The lifting height can be adjusted up and down and rotated according to the UAV's needs. The spring 209 is used for deceleration of the trolley. By pulling the connecting rod 215, the rear support bracket 208 rotates downwards, effectively separating the UAV from the rear support bracket without affecting the UAV's takeoff. In this example, the rear support bracket support has mounting holes of different heights, allowing adjustment of the bottom mounting position of the rear support bracket according to actual needs. The rear support bracket and the rear support bracket support are connected by a rolling shaft. One end of the spring is connected to the spring support via the rolling shaft, and the other end is connected to the connecting rod 215 in the middle of the rear support bracket via a nut. The connecting rod is fixed to the rear support bracket by welding.

[0025] like Figure 1 , Figure 2 As shown, the ejection trolley also includes a traction hook 107, which is symmetrically fixedly connected to the front and rear ends of the left and right side plates of the trolley. The traction hook 107 is used to connect a traction rope, and the acceleration and retrieval of the trolley bracket device within the track are achieved by dragging the traction rope. In this example, the traction hook is fixed to the front and rear ends of the left and right side plates of the trolley by welding or bolting.

[0026] The ejection trolley and ejection bracket are made of aluminum alloy to meet the requirements of lightweight design. They have the advantages of simple structure, adjustability, not easy to damage, and applicability to drones of different sizes.

[0027] This utility model, through the rational design of the catapult trolley and catapult bracket, can be applied to lifting drone wings of different sizes and lengths, enhancing the versatility of the trolley bracket device. Specific embodiments are described below:

[0028] Taking a certain type of UAV as an example, during installation, this utility model first checks whether the rolling wheels of the catapult trolley rotate normally. Then, the catapult trolley is installed inside the catapult frame track, and the traction rope is securely tied to the traction hooks at both ends of the catapult trolley. Next, the front left slide bracket and the front right slide bracket are embedded into the slide rail. The gears are adjusted to match the installation position with the UAV wing. The position is then fixed by fixing bolts and locking caps. The rear support bracket is adjusted to an appropriate height according to the UAV's installation interface using springs and rolling shafts. The spring support and the rear bracket support are fixed to the trolley platform by fixing bolts. The UAV wing is clamped by the clamping arms on the slide bracket. Combined with the rear support bracket, the rear fuselage of the UAV is lifted, thus achieving the smooth lifting of the UAV. In use, this invention utilizes a rubber band or similar ejection device to pull a traction rope on a traction hook, causing the ejection trolley to accelerate along a track. At the end of the ejection track, the trolley comes to a rapid stop under the restraint of a restraining rope or similar device. At the moment of braking, the drone detaches from the ejection trolley due to inertia, and the rear support bracket rapidly rotates downwards under spring tension to prevent collision with the drone's propeller, allowing the drone to take off successfully. After takeoff, the ejection trolley and ejection bracket are retrieved by pulling the traction rope on the rear traction hook of the ejection trolley.

[0029] The present invention has been disclosed above with reference to preferred embodiments, but it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention, and such modifications or alterations shall still fall within the scope of the present invention.

Claims

1. An adjustable trolley bracket device for launching unmanned aerial vehicles (UAVs), characterized in that, The system includes a catapult trolley and a catapult bracket. The catapult trolley includes a trolley platform, a left trolley plate, a right trolley plate, rolling wheels, rolling axles, and a blocking head. The lower end of the trolley platform is fixedly connected to the upper ends of the left and right trolley plates. The rolling wheels are rotatably connected to the left and right trolley plates via rolling axles. The blocking head is fixedly connected to the front ends of the left and right trolley plates. The catapult bracket includes a front left slide rail bracket, a front right slide rail bracket, a rear support bracket, gears, slide rails, locking caps, springs, a rear support bracket support, a spring support, rolling axles, racks, weight-reducing holes, and connecting rods. The catapult bracket is fixed to the trolley platform. The front right slide bracket is installed in the slide rail, which is fixedly connected to the trolley platform by fixing bolts and nuts. The gear is fixedly connected to the trolley platform by locking caps, fixing bolts and nuts. The front left and front right slide brackets are provided with racks that mesh with the gears. The front left and front right slide brackets are provided with weight reduction holes. One end of the rear support bracket is rotatably connected to the rear support bracket support by a rolling shaft. One end of the spring is rotatably connected to the middle of the rear support bracket by a connecting rod. The other end of the spring is rotatably connected to the spring support. The spring support and the rear support bracket support are fixedly connected to the trolley platform by fixing bolts and nuts.

2. The adjustable UAV catapult launcher trolley bracket device according to claim 1, characterized in that, The front left slide bracket and the front right slide bracket are centrally symmetrical structures, and the upper ends of the front left slide bracket and the front right slide bracket are provided with slides and clamping arms that open forward.

3. The adjustable UAV catapult launcher trolley bracket device according to claim 1, characterized in that, The rear support bracket adopts a circular tube structure, and the rear fuselage of the UAV is lifted and separated through spring supports, springs, rear support bracket supports and rolling shafts.

4. An adjustable UAV catapult launcher trolley bracket device according to any one of claims 1-3, characterized in that, The ejection trolley also includes a traction hook, which is symmetrically and fixedly connected to the front and rear ends of the left and right side plates of the trolley.

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