An explosion-proof AGV drive wheel

Abstract

This utility model relates to the technical field of AGVs, and specifically discloses an explosion-proof AGV drive wheel, including a mounting base, a mounting flange, a wheel body, a travel control unit, and a steering control unit. The mounting flange is buoyantly disposed below the mounting base. The wheel body is rotatably connected to the bottom of the mounting flange via a steering gear. The travel control unit includes an explosion-proof travel motor fixed to one side of the wheel body and used to provide power for the wheel's rotation. The steering control unit includes an explosion-proof steering motor fixed to the bottom of the mounting flange and located on one side of the wheel body, and connected to the steering gear. Both the travel motor and the steering motor are explosion-proof, which improves the overall explosion-proof performance of the drive wheel. Furthermore, placing both the travel motor and the steering motor on one side of the wheel body effectively reduces the overall size of the drive wheel and improves the AGV's maneuverability in confined spaces.

Description

Technical Field

[0001] This utility model relates to the technical field of AGV vehicles, and specifically to an explosion-proof AGV drive wheel. Background Technology

[0002] With the development of industrial automation, automated guided vehicles (AGVs) are increasingly widely used in high-risk environments such as chemical, military, petroleum, and pharmaceutical industries. These scenarios often contain flammable and explosive gases or dust, requiring the drive wheels of AGVs to have explosion-proof performance.

[0003] Traditional explosion-proof drive wheels require complete sealing and isolation of electrical components such as motors and brakes, which results in a large size, poor steering flexibility, and difficulty in operation in narrow spaces. For example, while vertical steering wheels are convenient for explosion-proof isolation, their overall height is significantly increased, affecting the stability of the AGV chassis. Utility Model Content

[0004] This utility model addresses the aforementioned problems and aims to provide an explosion-proof AGV drive wheel with good explosion-proof performance and a small overall size, thus ensuring the stability of the AGV vehicle during operation.

[0005] To achieve the above objectives, this utility model provides an explosion-proof AGV drive wheel, comprising:

[0006] Mounting base;

[0007] The mounting flange is floatingly positioned below the mounting base;

[0008] A wheel body, which is rotatably connected to the bottom of the mounting flange via a steering gear;

[0009] The walking control unit includes an explosion-proof walking motor, which is fixed to one side of the wheel and is used to provide power for the rotation of the wheel.

[0010] The steering control unit includes an explosion-proof steering motor, which is fixed to the bottom of the mounting flange and located on one side of the wheel body, and is connected to the steering gear.

[0011] According to the explosion-proof AGV drive wheel described above, the bottom of the steering gear is provided with a mounting plate, and the wheel body is fixed below the mounting plate by a wheel seat.

[0012] According to the explosion-proof AGV drive wheel described above, the walking control unit further includes an explosion-proof brake and a walking reducer. The explosion-proof walking motor and the walking reducer are both fixed on the wheel seat and are located on the first and second sides of the wheel body, respectively. The explosion-proof brake is located on the outer side of the wheel body.

[0013] The output shaft of the explosion-proof walking motor is connected to the walking reducer, the walking reducer is connected to the wheel body through a first rotating shaft, and the explosion-proof brake is located on the outside of the walking reducer and can be connected to the first rotating shaft.

[0014] According to the explosion-proof AGV drive wheel described above, the walking control unit further includes a walking speed sensor, which is located outside the walking reducer and is used to monitor the rotational speed of the first shaft.

[0015] According to the explosion-proof AGV drive wheel described above, the steering control unit further includes a steering reducer, which is fixed to the bottom of the mounting plate and located between the explosion-proof steering motor and the steering gear;

[0016] The steering reducer is provided with a drive shaft, the output shaft of the explosion-proof steering motor is connected to the lower end of the drive shaft, the output shaft of the steering reducer is provided with a transmission gear, and the transmission gear meshes with the steering gear.

[0017] According to the explosion-proof AGV drive wheel described above, the steering control unit further includes a steering angle sensor, which is located on one side of the transmission gear and is used to monitor the rotation angle of the transmission gear.

[0018] The explosion-proof AGV drive wheel described above also includes a guide unit. The four corners of the mounting flange are respectively connected to the four corners of the mounting base through one of the guide units. The steering gear is located in the middle area of ​​the mounting flange.

[0019] According to the explosion-proof AGV drive wheel described above, the guide unit includes a guide post, a guide sleeve, and a limiting nut. The upper end of the guide post is fixed to the bottom of the mounting base. The limiting nut is sleeved on the lower end of the guide post. The guide sleeve passes through the mounting flange. The mounting flange is sleeved on the outside of the guide post through the guide sleeve and is located between the limiting nut and the mounting base.

[0020] The explosion-proof AGV drive wheel described above also includes an elastic pressing unit. The two elastic pressing units are located above the symmetrical ends of the mounting base and can pass through the mounting base and abut against the top of both ends of the mounting flange.

[0021] According to the explosion-proof AGV drive wheel described above, each of the elastic pressing units includes a pressure plate and two springs. The pressure plate is located above the mounting base, and the two springs are respectively connected to the bottom of both ends of the pressure plate and can pass through the mounting base to abut against the mounting flange. The distance between the pressure plate and the mounting base is adjustable.

[0022] This utility model has the following beneficial effects:

[0023] 1. Both the travel motor and the steering motor are explosion-proof, which can improve the overall explosion-proof performance of the drive wheel. Furthermore, by placing both the travel motor and the steering motor on one side of the wheel, the overall size of the drive wheel can be effectively reduced, thus improving the AGV's ability to pass through narrow spaces.

[0024] 2. By placing the four guide units at the four corners of the mounting flange, it can avoid overlapping with the steering gear in the height direction, effectively reducing the overall height of the drive wheel and ensuring the smooth operation of the AGV.

[0025] 3. The distance between the pressure plate and the mounting base is adjustable. By adjusting the distance between the pressure plate and the mounting base, the compression of the spring can be adjusted, which in turn can adjust the downward pressure on the wheel to suit different ground surfaces. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the embodiment.

[0027] In the picture:

[0028] 100. Mounting base; 200. Mounting flange; 300. Wheel body; 310. Steering gear; 311. Mounting plate; 320. Wheel seat; 400. Travel control unit; 410. Explosion-proof travel motor; 420. Explosion-proof brake; 430. Travel reducer; 440. Travel speed sensor; 500. Steering control unit; 510. Explosion-proof steering motor; 520. Steering reducer; 530. Steering angle sensor; 600. Guide unit; 610. Guide column; 620. Guide sleeve; 630. Limit nut; 700. Elastic pressing unit; 710. Pressure plate; 720. Spring. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figure 1 As shown, an explosion-proof AGV drive wheel includes a mounting base 100, a mounting flange 200, a wheel body 300, a travel control unit 400, a steering control unit 500, a guide unit 600, and an elastic pressing unit 700.

[0031] Specifically, the mounting flange 200 is buoyantly disposed below the mounting base 100 via the guide unit 600 and the elastic pressing unit 700. The wheel 300 is rotatably connected to the bottom of the mounting flange 200 via the steering gear 310. The travel control unit 400 includes an explosion-proof travel motor 410, which is fixed to one side of the wheel 300 and provides power for the rotation of the wheel 300. The steering control unit 500 includes an explosion-proof steering motor 510, which is fixed to the bottom of the mounting flange 200 and located on one side of the wheel 300. The explosion-proof steering motor 510 is connected to the steering gear 310. In this embodiment, the wheel 300 can rotate in two directions, one of which is horizontal rotation, which can adjust the forward movement of the wheel 300. The AGV has two directions of rotation: vertical and horizontal. Vertical rotation drives the AGV body forward. The explosion-proof travel motor 410 provides power for the vertical rotation of the wheel 300, while the explosion-proof steering motor 510 drives the steering gear 310 to rotate horizontally, which in turn drives the wheel 300 to rotate horizontally. Among the drive wheels, the steering motor and travel motor are the most prone to explosion and fire. Using explosion-proof motors for both effectively improves the explosion-proof performance of the drive wheels. Furthermore, since both the explosion-proof travel motor 410 and the explosion-proof steering motor 510 are located below the mounting flange 200 and on one side of the wheel 300, the overall size of the drive wheels is effectively reduced, avoiding the problem of poor maneuverability in narrow spaces due to excessive size.

[0032] Furthermore, to ensure the stability of the drive wheel's movement, the steering gear 310 is located in the central area of ​​the mounting flange 200, and the wheel body 300 is also located in the central area of ​​the steering gear 310. To allow the guide unit 600 to avoid the steering gear 310, four guide units 600 are distributed at the four corners of the mounting base 100, and each of the four corners of the mounting flange 200 is connected to the four corners of the mounting base 100 via a guide unit 600. The mounting flange 200 can be guided to move up and down by the four guide units 600. The four guide units 600 can ensure the stability of the mounting flange 200's up and down movement. Moreover, since the guide units 600 and the steering gear 310 are staggered, they can avoid overlapping in height, thereby reducing the overall height of the drive wheel and improving the stability of the AGV vehicle's operation.

[0033] Furthermore, the guide unit 600 includes a guide post 610, a guide sleeve 620, and a limiting nut 630. The upper end of the guide post 610 is fixed to the bottom of the mounting base 100, and the limiting nut 630 is sleeved on the lower end of the guide post 610. The guide sleeve 620 passes through the mounting flange 200, and the mounting flange 200 is sleeved on the outside of the guide post 610 through the guide sleeve 620. The guide sleeve 620 is fixed to the mounting flange 200, allowing the four corners of the mounting flange 200 to move along the guide post 610. The guide post 610 moves up and down to prevent the mounting flange 200 from shifting. Of course, in order to prevent the mounting flange 200 from disengaging from the guide post 610, a limiting nut 630 is fitted at the lower end of the guide post 610. The inner diameter of the guide sleeve 620 should be smaller than the inner diameter of the limiting nut 630, so that the mounting flange 200 can only move between the limiting nut 630 and the bottom of the mounting base 100. The height of the limiting nut 630 can be adjusted by rotation, thereby adjusting the range of motion of the mounting flange 200.

[0034] Furthermore, to ensure that the wheel 300 always remains in contact with the ground, two elastic pressing units 700 are located above the symmetrical ends of the mounting base 100, and can pass through the mounting base 100 to abut against the tops of both ends of the mounting flange 200. The two elastic pressing units 700 provide elastic downward force acting on both ends of the mounting flange 200, driving both ends of the mounting flange 200 to always maintain a downward posture. Since the mounting flange 200 drives the wheel 300 to always remain in contact with the ground, and due to the elastic pressing, when the wheel 300 encounters an obstacle, the wheel 300 can overcome the elastic force and float up and down, ensuring the overall stability of the drive wheel.

[0035] Furthermore, each of these elastic pressing units 700 includes a pressure plate 710 and two springs 720. The pressure plate 710 is located above the mounting base 100, and the two springs 720 are respectively connected to the bottom ends of the pressure plate 710 and can pass through the mounting base 100 to abut against the mounting flange 200. The distance between the pressure plate 710 and the mounting base 100 is adjustable. Each elastic pressing unit 700 uses two springs 720 to press down on both sides of the mounting flange 200 simultaneously. By adjusting the distance between the pressure plate 710 and the mounting base 100, the compression of the two springs 720 can be adjusted, thereby adjusting the downward pressure on the mounting flange 200 and providing different elastic downward pressures to the wheel body 300, thus making it suitable for different road conditions.

[0036] Furthermore, in order to achieve the positioning and installation of the wheel body 300 and the steering gear 310, a mounting plate 311 is provided at the bottom of the steering gear 310. The wheel body 300 is fixed to the bottom of the mounting plate 311 by the wheel seat 320. The mounting plate 311 is fixed to the bottom of the steering gear 310 and can rotate together with the steering gear 310, thereby driving the wheel body 300 to rotate together, so as to achieve the positioning and steering of the wheel body 300.

[0037] Furthermore, the travel control unit 400 also includes an explosion-proof brake 420 and a travel reducer 430. The explosion-proof travel motor 410 and the travel reducer 430 are both fixed on the wheel seat 320 and located on the first and second sides of the wheel body 300, respectively. The explosion-proof brake 420 is located on the outside of the wheel body 300. The output shaft of the explosion-proof travel motor 410 is connected to the travel reducer 430. The travel reducer 430 is connected to the wheel body 300 through a first rotating shaft. The explosion-proof brake 420 is located on the outside of the travel reducer 430 and can be connected to the first rotating shaft. The speed output by the explosion-proof travel motor 410 is reduced by the travel reducer 430 before being transmitted to the wheel body 300, preventing the wheel body 300 from rotating too fast. Moreover, the explosion-proof brake 420 can brake the wheel body 300, and the brake is also of the explosion-proof type, which can further prevent the drive wheel from exploding.

[0038] Furthermore, in order to control the rotational speed of the wheel 300 in the vertical direction, the walking control unit 400 also includes a walking speed sensor 440. The walking speed sensor 440 is located outside the walking reducer 430 and is used to monitor the rotational speed of the first shaft. The rotational speed of the first shaft is the same as the rotational speed of the wheel 300. By monitoring the rotational speed of the first shaft, the rotational speed of the wheel 300 can be monitored, which facilitates real-time speed control.

[0039] Furthermore, the steering control unit 500 also includes a steering reducer 520, which is fixed to the bottom of the mounting plate 311 and located between the explosion-proof steering motor 510 and the steering gear 310. The steering reducer 520 is provided with a drive shaft, and the output shaft of the explosion-proof steering motor 510 is connected to the lower end of the drive shaft. The output shaft of the steering reducer 520 is provided with a transmission gear, which meshes with the steering gear 310. That is, the explosion-proof steering motor 510 is connected to the steering gear 310 through the steering reducer 520, which can reduce the speed of the steering gear 310, thereby reducing the steering speed of the wheel 300 and avoiding vehicle instability due to excessive steering speed.

[0040] Furthermore, in order to control the steering angle of the wheel 300, the steering control unit 500 also includes a steering angle sensor 530. The steering angle sensor 530 is located on one side of the transmission gear and is used to monitor the rotation angle of the transmission gear. Combined with the steering time, the steering speed can be obtained, which facilitates the control and adjustment of the steering angle and steering speed. Combined with the walking speed sensor 440, the movement status of the wheel 300 in multiple directions can be monitored to ensure the controllability of the overall operation of the drive wheel.

[0041] In this embodiment, an explosion-proof AGV drive wheel is disclosed, including a mounting base 100, a mounting flange 200, a wheel body 300, a travel control unit 400, and a steering control unit 500. The mounting flange 200 is buoyantly disposed below the mounting base 100. The wheel body 300 is rotatably connected to the bottom of the mounting flange 200 via a steering gear 310. The travel control unit 400 includes an explosion-proof travel motor 410, which is fixed to one side of the wheel body 300 and used to power the wheel body 300. The rotation is powered by the steering control unit 500, which includes an explosion-proof steering motor 510. The explosion-proof steering motor 510 is fixed to the bottom of the mounting flange 200 and located on one side of the wheel body 300. The explosion-proof steering motor 510 is connected to the steering gear 310. Both the travel motor and the steering motor are explosion-proof, which can improve the overall explosion-proof performance of the drive wheel. Furthermore, by placing both the travel motor and the steering motor on one side of the wheel body 300, the overall volume of the drive wheel can be effectively reduced, thereby improving the passability of the AGV in narrow spaces.

[0042] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0044] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. An explosion-proof AGV drive wheel, characterized by comprising: include: Mounting base; The mounting flange is floatingly positioned below the mounting base; A wheel body, which is rotatably connected to the bottom of the mounting flange via a steering gear; The walking control unit includes an explosion-proof walking motor, which is fixed to one side of the wheel and is used to provide power for the rotation of the wheel. The steering control unit includes an explosion-proof steering motor, which is fixed to the bottom of the mounting flange and located on one side of the wheel body, and is connected to the steering gear.

2. The explosion-proof AGV drive wheel according to claim 1, characterized in that, The bottom of the steering gear is provided with a mounting plate, and the wheel body is fixed below the mounting plate by a wheel seat.

3. The explosion-proof AGV drive wheel according to claim 2, characterized in that, The walking control unit also includes an explosion-proof brake and a walking speed reducer. The explosion-proof walking motor and the walking speed reducer are both fixed on the wheel seat and are located on the first and second sides of the wheel body, respectively. The explosion-proof brake is located on the outside of the wheel body. The output shaft of the explosion-proof walking motor is connected to the walking reducer, the walking reducer is connected to the wheel body through a first rotating shaft, and the explosion-proof brake is located on the outside of the walking reducer and can be connected to the first rotating shaft.

4. The explosion-proof AGV drive wheel according to claim 3, characterized in that, The walking control unit also includes a walking speed sensor, which is located outside the walking reducer and is used to monitor the rotational speed of the first shaft.

5. The explosion-proof AGV drive wheel according to claim 2, characterized in that, The steering control unit also includes a steering reducer, which is fixed to the bottom of the mounting plate and located between the explosion-proof steering motor and the steering gear; The steering reducer is provided with a drive shaft, the output shaft of the explosion-proof steering motor is connected to the lower end of the drive shaft, the output shaft of the steering reducer is provided with a transmission gear, and the transmission gear meshes with the steering gear.

6. The explosion-proof AGV drive wheel according to claim 5, characterized in that, The steering control unit also includes a steering angle sensor located on one side of the transmission gear and used to monitor the rotation angle of the transmission gear.

7. The explosion-proof AGV drive wheel according to claim 1, characterized in that, It also includes guide units, with each of the four corners of the mounting flange being vertically and vertically connected to the four corners of the mounting base via a guide unit, and the steering gear being located in the central area of ​​the mounting flange.

8. The explosion-proof AGV drive wheel according to claim 7, characterized in that, The guide unit includes a guide post, a guide sleeve, and a limiting nut. The upper end of the guide post is fixed to the bottom of the mounting base. The limiting nut is sleeved on the lower end of the guide post. The guide sleeve passes through the mounting flange. The mounting flange is sleeved on the outside of the guide post through the guide sleeve and is located between the limiting nut and the mounting base.

9. The explosion-proof AGV drive wheel according to claim 1, characterized in that, It also includes elastic pressing units, two of which are located above the symmetrical ends of the mounting base and can pass through the mounting base to abut against the top of both ends of the mounting flange.

10. The explosion-proof AGV drive wheel according to claim 9, characterized in that, Each of the elastic pressing units includes a pressure plate and two springs. The pressure plate is located above the mounting base. The two springs are respectively connected to the bottom ends of the pressure plate and can pass through the mounting base to abut against the mounting flange. The distance between the pressure plate and the mounting base is adjustable.

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