Induction front anti-collision device for unmanned mower

Abstract

The utility model discloses an induction front anti-collision device for an unmanned mower, which relates to the technical field of anti-collision and comprises a mounting plate, a limiting frame fixedly connected to the outer side wall of the mounting plate, a rubber strip movably arranged in the limiting frame and a fixing bolt penetrating through the mounting plate and in threaded connection with the mounting plate. The first fixing and locking mechanism and the second fixing and locking mechanism are arranged on the outer side wall of the limiting frame, and the detection mechanism is arranged in the limiting frame. The first fixing and locking mechanism comprises a second permanent magnet plate movably arranged on the outer side wall of the mounting plate, and a limiting plate hinged to the outer side wall of the second permanent magnet plate and used for fixing the fixing bolt; the detection mechanism comprises a mounting bin fixedly connected to the outer side wall of the mounting plate and a spring groove formed in the inner side wall of the mounting bin. According to the induction front anti-collision device for the unmanned mower, the limiting plate is fixed to the outer side wall of the fixing bolt, so that the fixing bolt is fixed through the limiting plate, and the fixing bolt is prevented from loosening.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anti -collision, especially relates to a kind of induction front anti -collision device for unmanned mower. BACKGROUND

[0002] The front anti-collision device of unmanned mower is a device for protecting the mower from damage when encountering obstacles. Specifically, this device usually includes a bumper bar and a buffer device that can absorb the energy generated by the impact, thereby protecting the front end of the mower from damage. For example, in some designs, a front bumper bar and a front buffer device (such as a spring or rubber column) are used to absorb the impact force to prevent the front end of the engine from being damaged directly. In addition, some mowers are also equipped with collision sensors or radar probes to detect obstacles in front and control the movement of the machine to avoid collisions.

[0003] Disclosed in Publication (Announcement) No. CN220374458U is a front anti-collision device for a vehicle, which includes a mounting block, a mounting plate, mounting holes, a groove, a buffer mechanism, and a limiting mechanism. The mounting plate is arranged on the mounting block, the mounting holes are formed on the mounting plate, the groove is formed on the mounting block, and the buffer mechanism is arranged in the groove. The buffer mechanism includes a square block, a spring, a telescopic column, a fixed block, a connecting column, and a protective plate.

[0004] Although the above-mentioned solution solves the problem of inconvenient disassembly of the current equipment, the mounting plate is fixed to the front of the vehicle by a screw rod. However, during the operation of the vehicle, the mounting plate may vibrate, and the screw bolt may loosen under the vibration load, resulting in a decrease in connection strength. In addition, the screw bolt fixing method may loosen during long-term use, increasing maintenance costs. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a front anti-collision device for an unmanned mower, which solves the problem of loosening of the screw bolt under the vibration load, resulting in a decrease in connection strength, by setting a locking mechanism. In addition, the screw bolt fixing method may loosen during long-term use, increasing maintenance costs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] A front anti-collision device for an unmanned mower includes a mounting plate, a limiting frame fixedly connected to the outer side wall of the mounting plate, a rubber strip movably arranged inside the limiting frame, and a fixing bolt penetrating through the mounting plate and threadedly connected with the mounting plate. The device also includes a first locking mechanism and a second locking mechanism arranged on the outer side wall of the limiting frame, and a detection mechanism arranged inside the limiting frame.

[0008] The first locking mechanism comprises a second permanent magnet plate movably arranged on the outer side wall of the mounting plate, and a limiting plate hingedly connected to the outer side wall of the second permanent magnet plate and used for fixing the fixing bolt.

[0009] The detection mechanism comprises a mounting bin fixedly connected to the outer side wall of the mounting plate, a spring slot formed in the inner side wall of the mounting bin, and a pressure sensor inlaid in the bottom of the spring slot and used for controlling the operation of the vehicle.

[0010] Preferably, the first locking mechanism further comprises a stand fixedly connected to the outer side wall of the mounting plate, a first permanent magnet plate fixedly connected to the end surface of the stand, and a connecting spring fixedly connected to the outer side wall of the first permanent magnet plate.

[0011] The outer side wall of the second permanent magnet plate is fixedly connected to the end surface of the connecting spring.

[0012] Preferably, the second permanent magnet plate is attracted to the first permanent magnet plate, and a through hole is formed in the top of the second permanent magnet plate, and the inner diameter of the through hole is equal to the outer diameter of the stand.

[0013] Preferably, the limiting plate comprises two groups of limiting plates hingedly connected to the two side walls of the second permanent magnet plate, and a hexagonal hole is formed in the top of the limiting plate and matched with the outer diameter of the nut of the fixing bolt.

[0014] Preferably, the detection mechanism further comprises a buffer spring fixedly connected to the outer side wall of the mounting plate.

[0015] The bottom surface of the rubber strip is fixedly connected to the top end of the buffer spring, and the buffer spring is completely located in the interior of the limiting frame.

[0016] Preferably, the detection mechanism further comprises a pushing plate fixedly connected to the rubber strip close to the buffer spring, and one end of the pushing plate is an inclined surface.

[0017] Preferably, the detection mechanism further comprises a return spring fixedly connected to the bottom of the spring slot, a movable block fixedly connected to the end surface of the return spring, and a transmission rod fixedly connected to the end surface of the movable block, and the end of the movable block far from the return spring is in the shape of a hemisphere and tangent to the end surface of the pushing plate.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model discloses a fixed bolt installs the mounting plate at the front end of the vehicle body, before installation, the second permanent magnet plate is adsorbed with the first permanent magnet plate, the connecting spring is in the compressed state, and the limiting plate side wall is adsorbed on the end face of the first permanent magnet plate, when the fixed bolt installation is completed, by jiggling the limiting plate, it rotates from the vertical state to the horizontal state, at this moment the hexagonal hole will be opposite the fixed bolt, then push the second permanent magnet plate, make it separate from the adsorption range of the first permanent magnet plate, until the limiting plate is set on the outer surface of the fixed bolt, at this moment the connecting spring is in the original state, to this to fix the limiting plate, thereby the fixed bolt is fixed through the limiting plate, prevent the fixed bolt from appearing loose.

[0020] Second, the utility model discloses a rubber strip is set up and prevents the direct contact of the vehicle head and object, when the rubber strip is impacted, the rubber strip will retract to the inside of the limiting frame, and make the buffer spring deformation, to this to absorb the impact force, realize the buffering effect, when the rubber strip is in the process of moving, will drive the push plate to move towards the direction of mounting plate, thereby push the movable block to slide horizontally in the spring groove, and compress reset spring, until the movable block is completely retracted to the inside of the spring groove, at this moment the transmission rod will resist the surface of pressure sensor, when the pressure that pressure sensor detects reaches the set value, at this moment the pressure signal is converted into electric signal and is sent to the inductive switch, and the steering of vehicle is controlled through the inductive switch. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is whole structure schematic diagram of the utility model;

[0022] Figure 2 It is internal structure schematic diagram of the utility model;

[0023] Figure 3 It is the utility model Figure 2 A structure enlarged schematic diagram in the utility model;

[0024] Figure 4 It is split structure schematic diagram of the utility model;

[0025] Figure 5 It is back structure schematic diagram of the utility model Figure 4 .

[0026] In the drawing: 1, mounting plate;2, limiting frame;3, rubber strip;401, stand;402, first permanent magnet plate;403, connecting spring;404, second permanent magnet plate;405, limiting plate;501, buffer spring;502, push plate;503, installation bin;504, pressure sensor;505, reset spring;506, movable block;507, transmission rod;6, fixed bolt. DETAILED DESCRIPTION

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Example 1: As Figures 1-5 As shown, a sensor-guided front collision avoidance device for an unmanned lawnmower includes a mounting plate 1, a limiting frame 2 fixedly connected to the outer wall of the mounting plate 1, a rubber strip 3 movably disposed inside the limiting frame 2, and a fixing bolt 6 that passes through the mounting plate 1 and is threadedly connected to the mounting plate 1. It also includes a first locking mechanism and a second locking mechanism disposed on the outer wall of the limiting frame 2, and a detection mechanism disposed inside the limiting frame 2.

[0029] The first locking mechanism includes a second permanent magnet plate 404 movably disposed on the outer side wall of the mounting plate 1, and a limiting plate 405 hinged to the outer side wall of the second permanent magnet plate 404 for fixing the fixing bolt 6.

[0030] The detection mechanism includes a mounting compartment 503 fixedly connected to the outer wall of the mounting plate 1, a spring groove formed in the inner wall of the mounting compartment 503, and a pressure sensor 504 embedded in the bottom of the spring groove for controlling the operation of the vehicle. The pressure sensor 504 is connected to a sensor switch via a wire. When the pressure detected by the pressure sensor 504 reaches the set value, it converts the pressure signal into an electrical signal and sends it to the sensor switch, which then controls the operation of the vehicle.

[0031] The first locking mechanism also includes a column 401 fixedly connected to the outer wall of the mounting plate 1, a first permanent magnet plate 402 fixedly connected to the end face of the column 401, and a connecting spring 403 fixedly connected to the outer wall of the first permanent magnet plate 402.

[0032] The outer wall of the second permanent magnet plate 404 is fixedly connected to the end face of the connecting spring 403. There are two sets of connecting springs 403, which are symmetrically arranged about the central axis of the column 401.

[0033] The second permanent magnet plate 404 and the first permanent magnet plate 402 are attracted to each other at their adjacent positions, and the top of the second permanent magnet plate 404 is provided with a through hole. The inner diameter of the through hole is equal to the outer diameter of the column 401, and the second permanent magnet plate 404 slides on the outer surface of the column 401 through the through hole.

[0034] There are two sets of limiting plates 405, which are respectively hinged to the two side walls of the second permanent magnet plate 404. The top of the limiting plate 405 is provided with a hexagonal hole that matches the outer diameter of the nut of the fixing bolt 6. The limiting plate 405 is made of ferromagnetic plate. The second locking mechanism and the first locking mechanism have the same composition structure and are symmetrically arranged about the vertical plane of the mounting plate 1.

[0035] The mounting plate 1 is installed on the front end of the vehicle body using the fixing bolt 6. Before installation, the second permanent magnet plate 404 is attracted to the first permanent magnet plate 402, the connecting spring 403 is in a compressed state, and the side wall of the limiting plate 405 is attracted to the end face of the first permanent magnet plate 402. After the fixing bolt 6 is installed, the limiting plate 405 is rotated from a vertical state to a horizontal state by moving it. At this time, the hexagonal hole will be facing the fixing bolt 6. Then, the second permanent magnet plate 404 is pushed to remove it from the attraction range of the first permanent magnet plate 402 until the limiting plate 405 is sleeved on the outer surface of the fixing bolt 6. At this time, the connecting spring 403 is in its original state, thereby fixing the limiting plate 405 and fixing the fixing bolt 6 to prevent the fixing bolt 6 from loosening.

[0036] Example 2: Figures 1-5 As shown, a sensor-guided front collision avoidance device for an unmanned lawnmower includes a mounting plate 1, a limiting frame 2 fixedly connected to the outer wall of the mounting plate 1, a rubber strip 3 movably disposed inside the limiting frame 2, and a fixing bolt 6 that passes through the mounting plate 1 and is threadedly connected to the mounting plate 1. It also includes a first locking mechanism and a second locking mechanism disposed on the outer wall of the limiting frame 2, and a detection mechanism disposed inside the limiting frame 2.

[0037] The first locking mechanism includes a second permanent magnet plate 404 movably disposed on the outer side wall of the mounting plate 1, and a limiting plate 405 hinged to the outer side wall of the second permanent magnet plate 404 for fixing the fixing bolt 6.

[0038] The detection mechanism includes a mounting compartment 503 fixedly connected to the outer wall of the mounting plate 1, a spring groove formed in the inner wall of the mounting compartment 503, and a pressure sensor 504 embedded in the bottom of the spring groove for controlling vehicle operation. The pressure sensor 504 is connected to a sensor switch via a wire. When the pressure detected by the pressure sensor 504 reaches the set value, the pressure signal is converted into an electrical signal and sent to the sensor switch, which then controls the operation of the vehicle.

[0039] The testing mechanism also includes a reset spring 505 fixedly connected to the bottom of the spring groove, a movable block 506 fixedly connected to the end face of the reset spring 505, and a transmission rod 507 fixedly connected to the end face of the movable block 506. The end of the movable block 506 away from the reset spring 505 is hemispherical and tangent to the end face of the push plate 502.

[0040] The testing mechanism also includes a buffer spring 501 that is fixedly connected to the outer wall of the mounting plate 1;

[0041] The bottom surface of the rubber strip 3 is fixedly connected to the top of the buffer spring 501. The buffer spring 501 is completely located inside the limiting frame 2. When the rubber strip 3 is impacted, the buffer spring 501 will deform to absorb the impact force.

[0042] The detection mechanism further comprises a push plate 502 fixedly connected to the rubber strip 3 near one end of the buffer spring 501, one end of the push plate 502 being a slope, wherein the slope of the push plate 502 is inserted into the inside of the mounting bin 503.

[0043] The detection mechanism further comprises a reset spring 505 fixedly connected to the bottom of the spring groove, a movable block 506 fixedly connected to the end face of the reset spring 505, and a transmission rod 507 fixedly connected to the end face of the movable block 506, the end of the movable block 506 away from the reset spring 505 being a hemispherical shape and tangent to the end face of the push plate 502, wherein the reset spring 505 is sleeved on the outer surface of the transmission rod 507. By arranging the pressure sensor 504 in the spring groove, the maximum force on the pressure sensor 504 is constant regardless of the force on the rubber strip 3, preventing excessive impact force from damaging the pressure sensor 504.

[0044] When the vehicle head collides with an object, the object will first contact the rubber strip 3, preventing direct contact between the vehicle head and the object, and the rubber strip 3 will retract into the inside of the limiting frame 2 and deform the buffer spring 501, thereby absorbing the impact force and achieving a buffering effect. When the rubber strip 3 moves, it will drive the push plate 502 to move towards the mounting plate 1, thereby pushing the movable block 506 to slide horizontally inside the spring groove and compress the reset spring 505 until the movable block 506 is completely retracted into the spring groove. At this time, the transmission rod 507 will abut against the surface of the pressure sensor 504. When the pressure detected by the pressure sensor 504 reaches the set value, the pressure signal is converted into an electrical signal and transmitted to the induction switch, and the vehicle steering is controlled through the induction switch.

Claims

1. A sensor-activated front collision avoidance device for an unmanned lawnmower, comprising a mounting plate (1), a limiting frame (2) fixedly connected to the outer wall of the mounting plate (1), a rubber strip (3) movably disposed inside the limiting frame (2), and a fixing bolt (6) penetrating the mounting plate (1) and threadedly connected to the mounting plate (1), characterized in that, It also includes a first locking mechanism and a second locking mechanism disposed on the outer wall of the limiting frame (2), and a detection mechanism disposed inside the limiting frame (2); The first locking mechanism includes a second permanent magnet plate (404) movably disposed on the outer side wall of the mounting plate (1), and a limiting plate (405) hinged to the outer side wall of the second permanent magnet plate (404) for fixing the fixing bolt (6). The detection mechanism includes a mounting compartment (503) fixedly connected to the outer wall of the mounting plate (1), a spring groove opened in the inner wall of the mounting compartment (503), and a pressure sensor (504) embedded in the bottom of the spring groove for controlling the operation of the vehicle.

2. The sensor-guided front collision avoidance device for an unmanned lawnmower according to claim 1, characterized in that: The first locking mechanism further includes a column (401) fixedly connected to the outer wall of the mounting plate (1), a first permanent magnet plate (402) fixedly connected to the end face of the column (401), and a connecting spring (403) fixedly connected to the outer wall of the first permanent magnet plate (402). The outer wall of the second permanent magnet plate (404) is fixedly connected to the end face of the connecting spring (403).

3. A sensor-guided front collision avoidance device for an unmanned lawnmower according to claim 2, characterized in that: The second permanent magnet plate (404) and the first permanent magnet plate (402) are attracted to each other at their adjacent locations, and a through hole is provided on the top of the second permanent magnet plate (404), the inner diameter of which is equal to the outer diameter of the column (401).

4. A sensor-guided front collision avoidance device for an unmanned lawnmower according to claim 3, characterized in that: There are two sets of limiting plates (405), which are respectively hinged to the two side walls of the second permanent magnet plate (404). The top of the limiting plate (405) is provided with a hexagonal hole that matches the outer diameter of the nut of the fixing bolt (6).

5. A sensor-guided front collision avoidance device for an unmanned lawnmower according to claim 4, characterized in that: The detection mechanism also includes a buffer spring (501) fixedly connected to the outer wall of the mounting plate (1); The bottom surface of the rubber strip (3) is fixedly connected to the top end of the buffer spring (501), and the buffer spring (501) is completely located inside the limiting frame (2).

6. A sensor-guided front collision avoidance device for an unmanned lawnmower according to claim 5, characterized in that: The detection mechanism also includes a push plate (502) fixedly connected to one end of the rubber strip (3) near the buffer spring (501), and one end of the push plate (502) is an inclined surface.

7. A sensor-guided front collision avoidance device for an unmanned lawnmower according to claim 6, characterized in that: The detection mechanism also includes a reset spring (505) fixedly connected to the bottom of the spring groove, a movable block (506) fixedly connected to the end face of the reset spring (505), and a transmission rod (507) fixedly connected to the end face of the movable block (506). The end of the movable block (506) away from the reset spring (505) is hemispherical and tangent to the end face of the push plate (502).

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