Self-walking trolley for picking up and serving table tennis balls and tennis balls

Abstract

The invention discloses a self-walking trolley, and particularly relates to a table tennis and tennis ball picking and serving self-walking trolley which comprises a trolley body forming a storage cavity, a ball picking device is arranged on the trolley body and comprises a first baffle forming a V-shaped groove and a rolling brush motor assembly, and a notch coinciding with a first opening of the storage cavity is formed in the bottom of the V-shaped groove. The rolling brush motor assembly stirs the balls in the V-shaped groove area to move towards the notch of the V-shaped groove, an air channel is formed in the vehicle body and communicated with the storage cavity, and an air channel motor is arranged in the air channel and sucks air in the storage cavity to drive the balls in the notch of the V-shaped groove to overcome the blocking acting force of the blocking piece to enter the storage cavity through the first opening. The technical problem of optimal design of the structure of the ball picking and serving self-walking trolley is solved. The ball picking and serving device has the advantages that the ground trafficability is relatively better, the serving angle can be automatically adjusted, and the ball picking and serving device can adapt to balls with different diameters (including table tennis balls, tennis balls and the like) to pick and serve the balls.

Description

Technical Field

[0001] The invention relates to a self-propelled vehicle, in particular to a self-propelled vehicle for picking up and serving table tennis or tennis balls. Background Art

[0002] The published Chinese invention patent document with patent number CN201910785614.8 records a multifunctional table tennis ball picking trolley based on the principle of force transmissibility. The power shaft drives the movement of the moving wheel, and the power shaft rotates while driving the roller to rotate through the conveyor belt. The roller rotation drives the rotation of the ball picking plate, and the ball picking plate is used to bring the scattered table tennis balls into the storage area through the inclined plate and the baffle, thereby achieving the effect of the device automatically picking up table tennis balls with high efficiency. At the same time, by placing the device vertically on the table tennis table, adjusting the distance and angle between the ball outlet tube and the table tennis table through the support frame, when the table tennis ball is accelerated and sent out by the power wheel, by adjusting the speed and rotation direction of the rotating wheel located at the outlet of the ball outlet tube, balls with different rotations can be sent out, thereby achieving the effect of having the function of a ball serving machine.

[0003] The above-mentioned car still has the following disadvantages: First, the ball picking plate is driven to rotate by the rotation of the roller. In combination with the inclined plate, the ball picking plate exerts a pushing force on the ping-pong ball to drive the ping-pong ball through the baffle into the storage area. Considering that the diameter of a standard ping-pong ball is only 40 mm, the inclined plate in the above-mentioned ball picking structure must be designed to fit the ground to the greatest extent. If the inclined plate is too far from the ground, the ball cannot be picked up. However, once the inclined plate fits the ground, the trolley can only be used in relatively flat ground places. Therefore, the above-mentioned ball picking structure design restricts the applicable places of the trolley.

[0004] Secondly, it is necessary to adjust the distance and angle between the ball outlet tube and the table tennis table through a support frame (the support frame and the trolley are independent structural designs), and then adjust the direction of the table tennis serve, which makes the serve direction adjustment operation relatively cumbersome and has a low degree of automation.

[0005] Finally, the diameter of the ball outlet pipe and the spacing between the rotating wheels at the outlet cannot be adjusted, which makes it only suitable for serving table tennis balls, thus affecting the versatility of the trolley.

[0006] Therefore, the applicant proposed the invention. Summary of the invention

[0007] The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art and to provide a self-propelled trolley for picking up and serving table tennis and tennis balls with an optimized structure.

[0008] In order to achieve the above-mentioned purpose, the present invention is a self-propelled cart for picking up and serving table tennis balls, including a body forming a storage cavity, the bottom surface of the storage cavity is provided with an opening for balls to pass through, and the storage cavity is shielded in an openable and closable manner by a baffle, and a ball picking device is provided on the outside of the body in the forward direction, including a baffle forming a V-shaped groove and a roller brush motor assembly, the baffle is installed on the body, and the bottom of the V-shaped groove forms a notch that coincides with the opening of the storage cavity, the roller brush motor assembly is installed on the body, and moves the balls in the V-shaped groove area toward the notch of the V-shaped groove, an air duct is formed on the body, and is interconnected with the storage cavity, an air duct motor is provided in the air duct, and the air in the storage cavity is sucked to drive the balls in the notch of the V-shaped groove to overcome the blocking force of the baffle and enter the storage cavity through the opening.

[0009] The present invention collects balls (including table tennis balls, tennis balls, etc.) scattered on the ground to the notch of the V-shaped groove of the baffle plate 1 by using the baffle plate 1 in conjunction with the roller brush motor assembly, and then sucks the balls into the storage cavity through the opening 1 by sucking the air in the storage cavity. In this process, the distance of the baffle plate 1 from the ground only needs to meet the requirement of ≤ the diameter of the ball to be collected, that is, the baffle plate 1 does not need to be in contact with the ground. Therefore, the trolley of the present invention can be used in places with relatively uneven ground.

[0010] In addition, considering that the negative pressure suction of the present invention is a non-contact ball picking method, it can further prevent the ball from being damaged by external force stress during the ball picking process.

[0011] In order to further improve the ball collection efficiency of the ball picking device, the roller brush motor assembly in the structure of the above-mentioned table tennis and tennis ball picking and serving self-propelled vehicle is preferably located in the area close to the notch of the V-shaped groove.

[0012] The above-mentioned self-propelled trolley for picking up and serving table tennis balls is provided with a serving device and a conveying path structure for balls from a storage chamber to the serving device in the vehicle body. The serving device is preferably selected to include a steering gear, a rotary motor assembly and a rotary bracket assembly. The rotary bracket assembly and the steering gear are installed on the vehicle body. The output end of the steering gear is connected to the rotary bracket assembly and drives the rotary bracket assembly to rotate. Four rotary motor assemblies are distributed in a matrix on the rotary bracket assembly. The wheels of all the rotary motor assemblies are gathered together, and a serving port for the balls to pass through is formed in the center of the four wheels.

[0013] The serving device in the above preferred technical solution can adjust the serving direction by driving the wheel bracket assembly to rotate by the steering gear. In addition, the four wheel centers form a serving port for the ball to pass through, and the wheel motors of the four wheel motor assemblies independently drive their corresponding wheels. By controlling the wheels of different wheel motor assemblies to rotate individually or in combination, the serving rotation direction can be changed.

[0014] Furthermore, the specific structure of the rotating wheel support assembly is preferably including: a U-shaped support body 1, a linear support body 2 located on the opening part of the support body 1, and a push rod motor installed on the support body 1 and used to adjust the distance between the support body 1 and the support body 2 by driving the displacement of the support body 2; Wherein, the output end of the servo motor is drivingly connected to the support body 1 of the rotating wheel support assembly; Among them, the four rotating wheel motor assemblies are evenly divided into two groups and are respectively installed on the support body 1 and the support body 2.

[0015] In the above-mentioned preferred technical solution, the split structure design of the rotating wheel support assembly enables the diameter of the serving port formed by the centers of the four rotating wheels to change synchronously by adjusting the distance between the support body 1 and the support body 2, so as to adapt to balls of different diameters (including table tennis balls, tennis balls, etc.), thereby further improving the versatility of the small vehicle of the present invention in different ball games.

[0016] For the above-mentioned self-propelled small vehicle for picking up and serving table tennis balls and tennis balls, the structure of the conveying path of the balls from the storage cavity to the serving device is preferably: A channel is formed on the bottom surface of the storage cavity, and the channel slopes downward from the side where the opening 1 is located to the symmetric side thereof and is connected to the fan blade cavity formed on the side surface of the storage cavity, A through hole for the balls to pass through is provided at the bottom of the fan blade cavity. The fan blade cavity is blocked by a baffle 2, and an opening 2 for the balls to pass through and communicating the channel and the fan blade cavity is provided on the baffle 2, A fan blade is provided in the fan blade cavity and is driven to rotate by a fan blade motor outside the fan blade cavity. A limiting device for the balls to pass through one by one is provided outside the fan blade cavity. During the rotation of the fan blade, the balls in the storage cavity enter between two adjacent fan blades through the opening 2, and the balls between every two adjacent fan blades are limited and conveyed through the cooperation of the inclined surface of the corresponding fan blade and the baffle 2, and then enter the limiting device through the through hole, and then enter the serving device one by one.

[0017] The conveying path structure in the above-mentioned preferred technical solution is compact, and there is no dead angle in the overall path, avoiding the situation that the balls are detained and piled up, resulting in abnormal serving.

[0018] Furthermore, the specific structure of the limiting device includes: a cross dial, a cross dial motor and a cross dial support, The cross dial support forms a guiding channel for guiding the balls to move from the through hole of the fan blade cavity to the serving port of the serving device. The output end of the cross dial motor is drivingly connected to the cross dial, and the rotation of the cross dial is driven to limit the balls to pass through the guiding channel one by one.

[0019] The structure of the limiting device in the above-mentioned preferred technical solution is simple, and the failure rate is relatively low.

[0020] In addition, in order to improve the intelligence level of the vehicle of the present invention, the structure of the self-propelled vehicle for picking up and serving table tennis and tennis balls is preferably selected to include a power system, a control system, a sensor and a guide device, and a communication device.

[0021] Compared with the prior art, the self-propelled trolley for picking up and serving table tennis and tennis balls obtained by the present invention has the following technical effects: The trolley of the present invention has relatively better ground passability and can be used in places with relatively uneven ground.

[0022] The serving device of the trolley of the present invention can automatically adjust the serving angle, and the serving rotation direction can also be adjusted synchronously or asynchronously with the serving direction. There is no need to add a support frame as mentioned in the background technology. The overall automation level of the trolley is higher and the use effect is better.

[0023] The trolley of the present invention can be adapted to balls of different diameters (including table tennis balls, tennis balls, etc.) for picking up and serving balls, thereby further improving the versatility of the trolley of the present invention for use in different ball sports.

[0024] The conveying path of the balls from the storage chamber to the serving device in the trolley of the present invention has a compact structure, and the overall path has no conveying dead angle, thereby avoiding the situation where the balls are retained and accumulated, resulting in failure to serve normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic diagram of the assembly structure of a self-propelled trolley for picking up and serving table tennis and tennis balls; Figure 2 The exploded structural diagram of a self-propelled trolley for picking up and serving table tennis and tennis balls; Figure 3 The perspective structural diagram of a self-propelled trolley for picking up and serving table tennis and tennis balls; Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle; Figure 5 This is a structural diagram of a self-propelled trolley for picking up and serving table tennis and tennis balls (the side panel on one side is hidden); Figure 6 The utility model is a structural schematic diagram of a serving device.

[0026] In the figure: body 1, storage cavity 1-1, opening 1-2, air duct 1-3, channel 1-4, fan blade cavity 1-5, through hole 1-6, power system 2, control system 3, sensor and guide device 4, communication device 5, baffle 6, baffle 1 7, V-shaped groove 7-1, notch 7-2, roller brush motor assembly 8, air duct motor 9, steering gear 10, wheel motor assembly 11, wheel 11-1, wheel bracket assembly 12, bracket body 1 12-1, bracket body 2 12-2, serving port 13, baffle 2 14, opening 2 14-1, fan blade 15, fan blade motor 16, cross dial 17, cross dial motor 18, cross dial bracket 19, guide channel 19-1, push rod motor 20. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0028] like Figure 1-5 As shown, as an implementation mode of the present invention, a self-propelled vehicle for picking up and serving table tennis or tennis balls provided in this embodiment includes a vehicle body 1, a power system 2, a control system 3, a sensor and guide device 4, and a communication device 5.

[0029] In this embodiment, the vehicle body 1 forms a storage cavity 1-1, and the bottom surface of the storage cavity 1-1 is provided with an opening 1-2 for balls to pass through, and is openably shielded by a baffle 6. A ball picking device is provided on the outer side of the vehicle body 1 in the forward direction, including a baffle 7 forming a V-shaped groove 7-1 and a roller brush motor assembly 8. The baffle 7 is installed on the vehicle body 1, and the bottom of the V-shaped groove 7-1 forms a notch 7-2 that coincides with the opening 1-2 of the storage cavity 1-1. The roller brush motor assembly 8 is provided with a baffle 7 forming a V-shaped groove 7-1. Component 8 is installed on the vehicle body 1, and is located near the notch of the V-shaped groove 7-1, and moves the balls in the V-shaped groove 7-1 area toward the notch 7-2 of the V-shaped groove 7-1. An air duct 1-3 is formed on the vehicle body 1, and is interconnected with the storage chamber 1-1. An air duct motor 9 is provided in the air duct 1-3, and sucks the air in the storage chamber 1-1 to drive the balls in the notch 7-2 of the V-shaped groove 7-1 to overcome the blocking force of the baffle 6 and enter the storage chamber 1-1 through the opening 1-2.

[0030] In this embodiment, a serving device and a ball conveying path structure from the storage chamber 1-1 to the serving device are provided in the vehicle body 1. The serving device includes a steering gear 10, a rotary motor assembly 11 and a rotary bracket assembly 12. The rotary bracket assembly 12 is an integrated structure. The rotary bracket assembly 12 and the steering gear 10 are installed on the vehicle body 1. The output end of the steering gear 10 is connected to the rotary bracket assembly 12 and drives the rotary bracket assembly 12 to rotate. Four rotary motor assemblies 11 are distributed in a matrix on the rotary bracket assembly 12. The rotary wheels 11-1 of all the rotary motor assemblies 11 are gathered together, and a serving port 13 for the balls to pass through is formed at the center of the four rotary wheels 11-1. The serving device can adjust the serving direction by driving the rotary bracket assembly 12 to rotate by the steering gear 10. In addition, the centers of the four reels 11-1 form a serving opening 13 for the ball to pass through, and the reel motors of the four reel motor assemblies 11 independently drive their corresponding reels 11-1. By controlling the reels 11-1 of different reel motor assemblies 11 to rotate individually or in combination, the serving rotation direction is changed.

[0031] The structure of the ball conveying path from the storage chamber 1-1 to the ball serving device in this embodiment is as follows: A channel 1-4 is formed on the bottom surface of the storage cavity 1-1. The channel 1-4 is inclined downward from one side where the opening 1-2 is located to the other side symmetrical thereto, and is connected with the blade cavity 1-5 formed on the side of the storage cavity 1-1. A through hole 1-6 is provided at the bottom of the blade cavity 1-5 for balls to pass through. The blade cavity 1-5 is shielded by a baffle 14. The baffle 14 is provided with an opening 14-1 for balls to pass through and connecting the channel 1-4 and the blade cavity 1-5. The fan blade 15 is provided inside, and is driven to rotate by the fan blade motor 16 outside the fan blade chamber 1-5. A limiting device is provided outside the fan blade chamber 1-5 for balls to pass through one by one. During the rotation of the fan blade 15, the balls in the storage chamber 1-1 enter between two adjacent fan blades 15 through the second opening 14-1, and the balls between each two adjacent fan blades 15 are conveyed by the inclined surface of the corresponding fan blade 15 and the second baffle 14, and then enter the limiting device through the through hole 1-6, and then enter the serving device one by one. The above-mentioned conveying path has a compact structure, and there is no conveying dead angle in the overall path, which avoids the situation where the balls are trapped and accumulated and cannot be served normally.

[0032] The specific structure of the limit device in this embodiment includes: a cross dial 17, a cross dial motor 18 and a cross dial bracket 19, the cross dial bracket 19 forms a guide channel 19-1, which is used to guide the ball to move from the through hole 1-6 of the blade cavity 1-5 to the serving port 13 of the serving device, and the output end of the cross dial motor 18 is connected to the cross dial 17, and drives the cross dial 17 to rotate to limit the balls to pass through the guide channel 19-1 one by one. The structure of the above limit device is simple, and the failure rate is relatively low.

[0033] The self-propelled trolley for picking up and serving table tennis balls and tennis balls provided in this embodiment collects the balls (including table tennis balls, tennis balls, etc.) scattered on the ground to the notch 7-2 of the V-shaped groove 7-1 of the baffle 1-7 through the baffle 1-7 and the roller brush motor assembly 8, and then sucks the balls into the storage chamber 1-1 through the opening 1-2 by sucking the air in the storage chamber 1-1. In this process, the distance between the baffle 1-7 and the ground only needs to meet the requirement of ≤ the diameter of the ball to be collected, that is, the baffle 1-7 does not need to fit the ground. Therefore, the trolley of the present invention can be used in places with relatively uneven ground.

[0034] In addition, considering that the negative pressure suction of the present invention is a non-contact ball picking method, it can further prevent the ball from being damaged by external force stress during the ball picking process.

[0035] As a second embodiment of the present invention, a table tennis or tennis ball picking and serving self-propelled vehicle is provided in this embodiment, and its general structure is consistent with the first embodiment described above. Figure 6 As shown, however, the wheel bracket assembly 12 described in this embodiment is of a split structure design, which includes a U-shaped bracket body 12-1, a I-shaped bracket body 12-2 located on the opening of the bracket body 12-1, and a push rod motor 20 installed on the bracket body 12-1 and driving the bracket body 12-2 to move to adjust the distance between the bracket body 12-1 and the bracket body 12-2; wherein, the output end of the servo 10 is connected to the bracket body 12-1 of the wheel bracket assembly 12; wherein, the four wheel motor assemblies 11 are divided into two groups, which are respectively installed on the bracket body 12-1 and the bracket body 12-2.

[0036] The split structural design of the above-mentioned rotating wheel bracket assembly 12 can adjust the distance between the bracket body 12-1 and the bracket body 2 12-2, and the diameter of the serving hole 13 formed in the center of the four rotating wheels 11-1 can be changed synchronously to adapt to balls of different diameters (including table tennis, tennis, etc.), thereby further improving the versatility of the vehicle of the present invention in different ball sports.

[0037] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A self - walking trolley for picking up and serving table tennis balls and tennis balls, including a vehicle body forming a storage cavity. An opening one for the balls to pass through is provided on the bottom surface of the storage cavity, and is occludable by a baffle. It is characterized in that: A ball - picking device is provided on the outer side of the vehicle body in the advancing direction, including a baffle one forming a V - shaped groove and a brush - rolling motor assembly. The baffle one is installed on the vehicle body, and a notch coinciding with the opening one of the storage cavity is formed at the bottom of the V - shaped groove. The brush - rolling motor assembly is installed on the vehicle body and拨动 the balls in the V - shaped groove area towards the notch of the V - shaped groove. An air duct is formed on the vehicle body and is mutually communicated with the storage cavity. An air - duct motor is provided in the air duct, and sucks the air in the storage cavity to drive the balls in the notch of the V - shaped groove to overcome the blocking force of the baffle and enter the storage cavity through the opening one.

2. A self-propelled trolley for picking up and serving table tennis or tennis balls according to claim 1, characterized in that: The brush - rolling motor assembly is located in the area close to the notch of the V - shaped groove.

3. A self - walking trolley for picking up and serving table tennis balls and tennis balls according to claim 1 or 2, characterized in that: A serving device and a conveying path structure for the balls from the storage cavity to the serving device are provided in the vehicle body. The serving device includes a steering gear, a runner motor assembly and a runner support assembly. The runner support assembly and the steering gear are installed on the vehicle body. The output end of the steering gear is in transmission connection with the runner support assembly and drives the runner support assembly to rotate. Four runner motor assemblies are distributed in a matrix on the runner support assembly. The runners of all the runner motor assemblies are gathered, and a serving port for the balls to pass through is formed at the center of the four runners.

4. A self-propelled trolley for picking up and serving table tennis or tennis balls according to claim 3, characterized in that The specific structure of the runner support assembly includes: a U - shaped support body one, a linear support body two located at the opening of the support body one, and a push - rod motor installed on the support body one and used to adjust the distance between the support body one and the support body two by driving the support body two to displace. Among them, the output end of the steering gear is in transmission connection with the support body one of the runner support assembly. Among them, the four runner motor assemblies are evenly divided into two groups and are respectively installed on the support body one and the support body two.

5. A self-propelled trolley for picking up and serving table tennis or tennis balls according to claim 3, characterized in that The conveying path structure for the balls from the storage cavity to the serving device is: A channel is formed on the bottom surface of the storage cavity. The channel slopes downward from the side where the opening one is located to the symmetric side, and is connected to a fan - blade cavity formed on the side surface of the storage cavity. A through - hole for the balls to pass through is provided at the bottom of the fan - blade cavity. The fan - blade cavity is occluded by a baffle two. An opening two for the balls to pass through and communicating the channel and the fan - blade cavity is provided on the baffle two. A fan blade is provided in the fan - blade cavity and is driven to rotate by a fan - blade motor outside the fan - blade cavity. A limiting device for the balls to pass through one by one is provided outside the fan - blade cavity. During the rotation of the fan blade, the balls in the storage cavity enter between two adjacent fan blades through the opening two. And the balls between every two adjacent fan blades are limited and conveyed through the cooperation of the inclined surface of its corresponding fan blade and the baffle two, and then enter the limiting device through the through - hole, and then enter the serving device one by one.

6. A self-propelled trolley for picking up and serving table tennis or tennis balls according to claim 4, characterized in that The conveying path structure for the balls from the storage cavity to the serving device is: A channel is formed on the bottom surface of the storage cavity. The channel slopes downward from the side where the opening one is located to the symmetric side, and is connected to a fan - blade cavity formed on the side surface of the storage cavity. The bottom of the blade cavity is provided with a through hole for the ball to pass through, the blade cavity is shielded by a second baffle, and the second baffle is provided with an opening second for the ball to pass through and connecting the channel and the blade cavity. A fan blade is arranged in the fan blade cavity, and is driven to rotate by a fan blade motor outside the fan blade cavity. A limiting device is arranged outside the fan blade cavity for balls to pass through one by one. During the rotation of the fan blade, the balls in the storage cavity enter between two adjacent fan blades through opening two, and the balls between each two adjacent fan blades are conveyed in a limited manner through the cooperation between the inclined surface of the corresponding fan blade and baffle two, and then enter the limiting device through the through hole, and then enter the serving device one by one.

7. A self-propelled trolley for picking up and serving table tennis or tennis balls according to claim 5, characterized in that The specific structure of the limit device includes: a cross dial, a cross dial motor and a cross dial bracket. The cross dial bracket forms a guide channel for guiding the ball to move from the through hole of the fan blade cavity to the serving port of the serving device. The output end of the cross dial motor is connected to the cross dial and drives the cross dial to rotate to limit the balls to pass through the guide channel one by one.

8. A self-propelled trolley for picking up and serving table tennis or tennis balls according to claim 6, characterized in that The specific structure of the limit device includes: a cross dial, a cross dial motor and a cross dial bracket. The cross dial bracket forms a guide channel for guiding the ball to move from the through hole of the fan blade cavity to the serving port of the serving device. The output end of the cross dial motor is connected to the cross dial and drives the cross dial to rotate to limit the balls to pass through the guide channel one by one.

9. A self-propelled trolley for picking up and serving table tennis or tennis balls according to claim 8, characterized in that It also includes power systems, control systems, sensors and guidance devices, and communication devices.

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