Drive-by-wire brake structure of miniaturized unmanned sweeper

Abstract

The utility model discloses a miniature unmanned sweeper drive-by-wire brake structure, and relates to the technical field of unmanned sweepers, the miniature unmanned sweeper drive-by-wire brake structure comprises a sweeper body, the sweeper body comprises a housing, the inner wall of the housing is fixedly connected with a mounting vertical plate, the bottom end of the mounting vertical plate is internally and rotatably provided with moving wheels, and the moving wheels are fixedly connected with the housing. And a braking unit is arranged above the mounting vertical plate. The hydraulic cylinder is started, the extending end of the hydraulic cylinder is used for pushing the piston rod to promote the lifting transverse plate to move up and down, when the lifting transverse plate moves downwards, the push-pull rods on the two sides can be pushed, the inclination angle of the push-pull rods is changed, and the other end of the lifting transverse plate is used for pushing the two brake clamps to move relatively. When the brake clamps move relatively, the two groups of brake arc blocks are driven to move relatively along with the brake clamps, the brake arc blocks are extruded and clamped on the outer surfaces of the two sides of the moving wheels, the braking purpose is achieved, brake pads and brake bumps are matched to generate friction force with the moving wheels, the brake efficiency is further improved, and the parking stability of the sweeper is further improved.

Description

Technical Field

[0001] This utility model relates to the field of unmanned sweeping vehicle technology, specifically to a miniaturized unmanned sweeping vehicle's drive-by-wire braking structure. Background Technology

[0002] Miniaturized unmanned sweeping vehicles are intelligent devices that integrate automated sweeping, vacuuming, and watering functions. They employ multi-sensor fusion technology, including multi-line LiDAR, high-precision GPS positioning, inertial navigation modules, and cameras, to achieve precise path planning, obstacle avoidance, and autonomous driving. This replaces manual sweeping, improving efficiency and reducing cleaning costs. They are suitable for enclosed / semi-enclosed environments such as parks, scenic spots, commercial streets, and residential areas. The market for miniaturized unmanned sweeping vehicles has reached a certain scale, and the competitive landscape is becoming clearer. Some companies are enhancing their product competitiveness through technological innovation (such as AI intelligent control and fully automatic self-unloading modes), while the braking structure is a key component for forcibly decelerating the sweeping vehicle from a moving state to a complete stop. During sweeping operations, precise stopping at any location may be necessary, such as avoiding obstacles or entering narrow areas.

[0003] When a sweeper is on an inclined road surface such as a ramp, it is difficult to ensure stable parking by relying solely on the friction of the wheels. This can cause the sweeper to shift or slip, thus reducing its stability. To address this issue, we provide a miniaturized, wire-controlled braking structure for unmanned sweepers. Utility Model Content

[0004] The purpose of this invention is to provide a miniaturized braking structure for a drive-by-wire system of an unmanned sweeper, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A braking structure for a miniaturized unmanned sweeper with wire control includes a sweeper body, the sweeper body including a shell, a mounting plate fixedly connected to the inner wall of the shell, and a movable wheel rotatably mounted inside the bottom end of the mounting plate, the movable wheel enabling the sweeper to move freely.

[0007] A braking unit is provided above the mounting plate. The braking unit includes an extension bracket that is fixedly connected and installed above the mounting plate. The extension bracket facilitates the support of the hydraulic cylinder.

[0008] A further improvement of this utility model is that: a hydraulic cylinder is fixedly installed on the top of the extension bracket, a piston rod is fixedly installed on the extension end of the hydraulic cylinder, and a lifting plate is fixedly installed on the other end of the piston rod. The start of the hydraulic cylinder can drive the lifting plate to move up and down by utilizing its extension end, thereby enabling the brake clamp to clamp or release.

[0009] A further improvement of this utility model is that: a rotating shaft is fixedly installed on both ends of the lifting plate, and a push-pull rod is rotatably connected to the inner axis of the rotating shaft.

[0010] A further improvement of this utility model is that a brake clamp is fixedly installed on the other end of the push-pull rod, and a bearing rod is fixedly installed inside the groove of the brake clamp.

[0011] A further improvement of this utility model is that a connecting crossbar is rotatably sleeved on the outer surface of the bearing rod, and the top middle position of the connecting crossbar is fixedly connected to the top and bottom of the mounting vertical plate. The connecting crossbar limits the position of the brake clamp to prevent it from shifting when clamping or releasing.

[0012] A further improvement of this utility model is that a connecting ear is fixedly installed on the inner wall of the bottom end of the brake clamp, and a brake arc block is fixedly installed inside the connecting ear. When the brake clamp moves relative to the wheel, the brake arc block clamps the two sides of the wheel, and the shape of the brake arc block matches the surface of the wheel to increase the contact area and braking force.

[0013] A further improvement of this utility model is that: the brake block has an inner cavity, a brake pad is fixedly installed inside the inner cavity, and a brake protrusion is fixedly installed on the outer surface of the brake pad. The brake pad can generate friction with the moving wheel, which makes it easy to hold the moving wheel and keep the moving wheel stationary. The brake protrusion further promotes the friction between the two, thereby making the sweeper park stably.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] This utility model provides a braking structure for a miniaturized unmanned sweeper with wire control. By setting up a hydraulic cylinder for activation, the extended end of the cylinder pushes the piston rod to move the lifting plate up and down. When the lifting plate moves down, it pushes the push-pull rods on both sides, causing the tilt angle of the push-pull rods to change. The other end of the push-pull rods pushes two sets of brake clamps to move relative to each other. When the brake clamps move relative to each other, they drive two sets of brake arc blocks to move relative to each other, squeezing and clamping them on the outer surfaces of both sides of the moving wheel, thereby achieving the braking effect.

[0016] This utility model provides a braking structure for a miniaturized unmanned sweeper with wire control. By setting brake pads and brake protrusions, when the brake block is clamped on the outer surface of the moving wheel, the brake pads and brake protrusions work together to generate friction with the moving wheel. The shape of the brake pads matching the wheel surface increases the contact area and braking force, further promoting braking efficiency and thus improving the parking stability of the sweeper. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the mounting vertical plate structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the hydraulic cylinder structure of this utility model;

[0020] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A;

[0021] Figure 5 This is a schematic diagram of the braking arc block structure of this utility model.

[0022] In the diagram: 1. Sweeper body; 2. Outer shell; 3. Moving wheels; 4. Mounting vertical plate; 41. Extension bracket; 42. Hydraulic cylinder; 43. Piston rod; 44. Lifting horizontal plate; 45. Rotary shaft; 46. Push-pull rod; 47. Brake clamp; 48. Bearing rod; 49. Connecting horizontal bar; 410. Connecting lug; 411. Brake arc block; 412. Inner cavity; 413. Brake pad; 414. Brake protrusion. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0024] like Figure 1-5As shown, this utility model provides a miniaturized unmanned sweeper's wire-controlled braking structure, including a sweeper body 1, which includes a shell 2. A mounting plate 4 is fixedly connected to the inner wall of the shell 2. A movable wheel 3 is rotatably mounted inside the bottom end of the mounting plate 4. A braking unit is provided above the mounting plate 4. The braking unit includes an extension bracket 41 fixedly connected and mounted above the mounting plate 4. A hydraulic cylinder 42 is fixedly mounted on the top of the extension bracket 41. A piston rod 43 is fixedly mounted on the extension end of the hydraulic cylinder 42. A lifting cross plate 44 is fixedly mounted on the other end of the piston rod 43. A rotating shaft 45 is fixedly mounted on both ends of the lifting cross plate 44. A push-pull rod 46 is rotatably connected to the inner axis of the rotating shaft 45. A brake clamp 47 is fixedly mounted on the other end of the push-pull rod 46. A bearing rod 48 is fixedly mounted inside the groove of the brake clamp 47. A connecting cross bar 49 is rotatably sleeved on the outer surface of the bearing rod 48. The top middle position of the connecting cross bar 49 is fixedly connected to the top and bottom of the mounting plate 4.

[0025] Furthermore, after receiving the command, the braking unit activates the hydraulic cylinder 42, which pushes the piston rod 43 to move the lifting plate 44 up and down. When the lifting plate 44 moves down, it pushes the push-pull rods 46 on both sides, causing the tilt angle of the push-pull rods 46 to change. The other end of the push-pull rods 46 then pushes the two sets of brake clamps 47 to move relative to each other. When the brake clamps 47 move relative to each other, they drive the two sets of brake blocks 411 to move relative to each other, squeezing and clamping them on the outer surfaces of both sides of the moving wheel 3 to achieve the braking purpose. Example

[0026] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a connecting ear 410 is fixedly installed on the inner wall of the bottom end of the brake clamp 47, a brake arc block 411 is fixedly installed inside the connecting ear 410, an inner cavity 412 is opened inside the brake arc block 411, a brake pad 413 is fixedly installed inside the inner cavity 412, and a brake protrusion 414 is fixedly installed on the outer surface of the brake pad 413.

[0027] Furthermore, when the brake block 411 is clamped on the outer surface of the moving wheel 3, it works with the brake pad 413 and the brake protrusion 414 to generate friction with the moving wheel 3, further improving braking efficiency.

[0028] The working principle of the brake structure of this miniaturized unmanned sweeper will be explained in detail below.

[0029] like Figure 1-5As shown, when in use, after receiving a command, the braking unit activates the hydraulic cylinder 42. The extended end of the hydraulic cylinder 42 pushes the piston rod 43, causing the lifting plate 44 to move up and down. When the lifting plate 44 moves down, it pushes the push-pull rods 46 on both sides, causing the tilt angle of the push-pull rods 46 to change. The other end of the push-pull rods 46 pushes the two sets of brake clamps 47 to move relative to each other. When the brake clamps 47 move relative to each other, they drive the two sets of brake arc blocks 411 to move relative to each other, squeezing and clamping them on the outer surfaces of both sides of the moving wheel 3 to achieve the purpose of braking. When the brake arc blocks 411 are clamped on the outer surface of the moving wheel 3, they work with the brake pads 413 and brake protrusions 414 to generate friction with the moving wheel 3, further improving the braking efficiency.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A brake structure for a miniaturized unmanned sweeper controlled by wire, comprising the sweeper body (1), characterized in that: The sweeper body (1) includes an outer shell (2), and an mounting plate (4) is fixedly connected to the inner wall of the outer shell (2). A movable wheel (3) is rotatably mounted inside the bottom end of the mounting plate (4). A braking unit is provided above the mounting plate (4), and the braking unit includes an extension bracket (41) that is fixedly connected and installed above the mounting plate (4).

2. The braking structure of a miniaturized unmanned sweeping vehicle with drive-by-wire control according to claim 1, characterized in that: A hydraulic cylinder (42) is fixedly installed on the top of the extension bracket (41), a piston rod (43) is fixedly installed on the extension end of the hydraulic cylinder (42), and a lifting plate (44) is fixedly installed on the other end of the piston rod (43).

3. The braking structure of a miniaturized unmanned sweeping vehicle with drive-by-wire control according to claim 2, characterized in that: A rotating shaft (45) is fixedly installed on both ends of the lifting horizontal plate (44), and a push-pull rod (46) is rotatably connected at the inner axis of the rotating shaft (45).

4. The braking structure of a miniaturized unmanned sweeping vehicle with drive-by control according to claim 3, characterized in that: A brake clamp (47) is fixedly installed on the other end of the push-pull rod (46), and a bearing rod (48) is fixedly installed inside the groove of the brake clamp (47).

5. The braking structure of a miniaturized unmanned sweeping vehicle with drive-by control according to claim 4, characterized in that: A connecting crossbar (49) is rotatably sleeved on the outer surface of the bearing rod (48), and the top middle position of the connecting crossbar (49) is fixedly connected to the top and bottom of the mounting vertical plate (4).

6. The braking structure of a miniaturized unmanned sweeping vehicle with drive-by control according to claim 4, characterized in that: A connecting ear (410) is fixedly installed on the inner wall of the bottom end of the brake clamp (47), and a brake arc block (411) is fixedly installed inside the connecting ear (410).

7. The braking structure of a miniaturized unmanned sweeping vehicle with drive-by control according to claim 6, characterized in that: The brake block (411) has an inner cavity (412) inside, and a brake pad (413) is fixedly installed inside the inner cavity (412). A brake protrusion (414) is fixedly installed on the outer surface of the brake pad (413).

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