Height-adjustable mechanism and sundry avoiding device of unmanned transport vehicle

Abstract

The utility model discloses a height-adjustable mechanism and an unpiloted transport vehicle sundry avoiding device, and relates to the technical field of unpiloted vehicles, the height-adjustable mechanism comprises an adjusting rod, and a plurality of clamping grooves are formed in the outer side wall of the adjusting rod; a central through hole is formed in the mounting part, the outer side of the adjusting rod is coaxially sleeved with the mounting part, and a notch facing the adjusting rod is formed in the inner wall of the central through hole; the positioning assembly comprises a magnet and a sliding block, the magnet is fixed to the groove bottom of the notch, the sliding block is connected into the notch in a radial sliding mode, one end of the sliding block is a clamping end detachably clamped with the clamping groove, and the other end of the sliding block is of a magnetic structure with the same magnetic pole as the magnet; the sundry avoiding device of the unmanned transport vehicle comprises a vehicle body, driving wheels and rolling wheels are installed at the bottom of the vehicle body, installation parts are fixed to the four corners of the vehicle body through connecting rods, the top end and the bottom end of an adjusting rod are rotationally connected with lateral guide wheels correspondingly, and the rotating faces of the lateral guide wheels cover the driving areas of the driving wheels. And the sundries are deflected to the outer side of the vehicle body.

Description

Technical Field

[0001] This utility model relates to the field of unmanned vehicle technology, and more specifically to a height-adjustable mechanism and a debris avoidance device for unmanned transport vehicles. Background Technology

[0002] With the development of technology, material transportation in some large factories has been replaced by unmanned transport vehicles. Due to the different sizes of different factory areas and the different distribution of workshops, the transportation routes of unmanned transport vehicles are also different. Unmanned transport vehicles (such as AGV transport vehicles) are vehicles that can automatically complete material handling tasks without direct human intervention. They are widely used in many fields such as manufacturing, warehousing and logistics, hospitals, and libraries to improve efficiency, reduce labor costs, and reduce workload.

[0003] In the operating environment of unmanned transport vehicles (such as AGVs), there are often some low-height debris on the ground, such as small stones, branches, papers, and cables. These debris are difficult for the vehicle's sensors to detect, making it difficult for the vehicle to avoid them while driving. When these debris are caught in the contact area between the drive wheels and the ground of the unmanned transport vehicle, it may cause the drive wheels to jam, the motor to be damaged, or other mechanical failures, seriously affecting the normal operation of the vehicle. At the same time, existing unmanned transport vehicles are usually not designed with height adjustment function, or their height adjustment mechanism is complicated and inconvenient to operate. This makes it impossible for the vehicle to flexibly adjust its height when facing obstacles of different heights or ground with different flatness, thus limiting its applicability in complex environments.

[0004] Therefore, how to provide a height-adjustable mechanism and a debris avoidance device for unmanned transport vehicles, so that the transport vehicles can be adapted to different ground environments and effectively prevent debris from being rolled in, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a height-adjustable mechanism and a debris avoidance device for unmanned transport vehicles, aiming to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A height-adjustable mechanism, comprising:

[0008] An adjusting rod, wherein the outer side wall of the adjusting rod is provided with a plurality of spaced slots along its length;

[0009] The mounting part has a central through hole and is coaxially sleeved on the outside of the adjusting rod. The inner wall of the central through hole has a groove facing the adjusting rod.

[0010] A positioning component, comprising a magnet and a slider, wherein the magnet is fixed to the bottom of the slot, and the slider is radially slidably connected within the slot and located between the adjusting rod and the magnet; one end of the slider is a snap-fit ​​end that can be detachably snapped into the slot, and the other end is a magnetic structure with the same magnetic poles as the magnet.

[0011] When the adjusting rod moves vertically, the locking end disengages from the slot and moves toward the magnet. When the adjusting rod reaches the target position, the slider moves toward the adjusting rod under the repulsive force of the magnet, so that the locking end engages with the slot, thereby fixing the adjusting rod.

[0012] Through the above technical solution, this utility model provides a height-adjustable mechanism in which the locking end of the slider forms a detachable locking connection with the slot, while utilizing the repulsive force between the magnet and the slider to ensure the stable fixation of the adjusting rod at the target position; height adjustment can be achieved without manual tools, significantly improving operational efficiency; this magnetic fixing method is not only simple to operate but also highly reliable, effectively preventing displacement of the adjusting rod during use; when the adjusting rod is subjected to external force, it can smoothly disengage from the current slot, and after moving to the target position, it can be relocked by magnetic repulsion, ensuring a smooth and reliable adjustment process, solving the problem that existing unmanned transport vehicles lack flexible height adjustment functions and are difficult to adapt to the usage needs of different environments.

[0013] Preferably, in the above-mentioned height-adjustable mechanism, the slot is an annular slot, and there are multiple sliders and magnets, with each slider and magnet corresponding to the other and arranged circumferentially within the slot. The annular slot and the uniform circumferential distribution of the sliders and magnets ensure that the adjusting rod can be synchronously engaged by multiple sets of sliders at any height position, providing multiple evenly distributed fixing points on the adjusting rod in the circumferential direction, thus improving the stability and reliability of the fixing.

[0014] Preferably, in the height-adjustable mechanism described above, a limiting block is fixed within the slot and on both sides of each slider. A groove is formed on the sidewall of the limiting block near the slider, and a roller is installed within the groove, abutting against the sidewall of the slider. The limiting block restricts the slider's movement along a fixed path within the slot, preventing slider offset or jamming and ensuring precise alignment between the locking end and the slot. Furthermore, the roller installed within the groove of the limiting block transforms the contact between the slider and the limiting block into a rolling contact, reducing friction as the slider moves within the slot and improving smoothness of movement.

[0015] Preferably, in the above-mentioned height-adjustable mechanism, the slider has a T-shaped cross-section, and the locking end and the groove wall of the locking slot have an adapted arc-shaped structure. The T-shaped cross-section design improves its resistance to deformation, ensuring that it is not easily damaged under high load or frequent adjustment. The arc-shaped adaptation structure of the locking end and the locking slot makes the disengagement and insertion actions smoother, reduces jamming, and increases the meshing contact area, enhancing the fixing strength.

[0016] Preferably, in the height-adjustable mechanism described above, the outer diameters of both the slider and the limiting block decrease sequentially from the magnet to the adjusting rod. This outer diameter design enhances the structural adaptability of the slider and the limiting block at different positions, enabling the device to better adapt to different usage environments and operating conditions.

[0017] Preferably, in the above-described height-adjustable mechanism, an upper limit plate and a lower limit plate are fixed to the two groove walls of the slot, respectively, and the top and bottom surfaces of the slider are slidably connected between the upper limit plate and the lower limit plate. The upper and lower limit plates restrict the axial movement range of the slider to prevent excessive stretching or compression of the adjusting rod, which could lead to structural damage; the top and bottom surfaces of the slider are slidably connected to the limit plates to further optimize the movement trajectory of the slider and avoid deflection.

[0018] This utility model also provides a debris avoidance device for an unmanned transport vehicle, including a vehicle body and the aforementioned height-adjustable mechanism installed on the vehicle body; a drive wheel and rollers are installed at the bottom of the vehicle body, and the mounting part is fixed at the four corners of the vehicle body by connecting rods. The top and bottom ends of the adjusting rod are respectively rotatably connected to lateral guide wheels, and the rotation surface of the lateral guide wheels covers the driving area of ​​the drive wheel, for deflecting debris to the outside of the vehicle body.

[0019] Through the above technical solution, this utility model provides a debris avoidance device for an unmanned transport vehicle. By installing a height-adjustable mechanism on the vehicle body and rotatably connecting side guide wheels at the top and bottom of the adjusting rod, the rotation surface of the side guide wheels covers the driving area of ​​the drive wheels. When the unmanned transport vehicle moves, lower debris will first contact the side guide wheels. Upon contact with the side guide wheels, the thrust of the unmanned transport vehicle during travel will act on the debris. Since the side guide wheels can rotate, the force on the debris upon contact with the side guide wheels shifts, pushing the debris to both sides of the side guide wheels. This causes the debris to be offset from the contact surface between the drive wheels and the ground, thereby reducing the impact of debris on the equipment and reducing the likelihood of equipment malfunctions, thus improving the stability of equipment operation. Combined with the height-adjustable mechanism, the position of the side guide wheels can be dynamically adjusted according to the height of debris on the ground, adapting to different working conditions and enhancing its applicability and flexibility in different environments.

[0020] Preferably, in the above-mentioned unmanned transport vehicle debris avoidance device, a rubber strip is adhered to the outer rim of the side guide wheel. The rubber strip adhered to the outer rim of the side guide wheel acts as a buffer and shock absorber when in contact with debris, reducing damage to the vehicle and debris from collisions, lowering maintenance costs, and improving vehicle driving safety.

[0021] Preferably, in the above-mentioned unmanned transport vehicle debris avoidance device, a mounting groove is provided at the end of the connecting rod away from the mounting part, and a magnet is fixed in the mounting groove. The magnet attracts the side wall of the vehicle body, enabling rapid pre-positioning of the connecting rod, facilitating precise subsequent fixing with fasteners and improving installation efficiency.

[0022] Preferably, in the above-mentioned unmanned transport vehicle debris avoidance device, the connecting rod has an inherent gasket on the outer wall of one end of the magnet. The gasket fits against the side wall of the vehicle body and is secured by fasteners. The gasket increases the contact area between the connecting rod and the vehicle body, and the fasteners further tighten the connection, preventing loosening due to vibration.

[0023] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a height-adjustable mechanism and a debris avoidance device for unmanned transport vehicles, which has the following beneficial effects:

[0024] This invention utilizes a side guide wheel to cover the driving area of ​​the drive wheel. By leveraging the thrust of the vehicle and the rotation of the side guide wheel, debris is deflected to the outside of the vehicle body, reducing its impact on the drive wheel and motor, and improving the stability of the equipment. The adjustment rod, mounting part, and positioning assembly work together to move and fix the adjustment rod vertically, making the device suitable for various operating environments. The multi-slot design supports multiple adjustment levels to adapt to different ground height requirements. The repulsive force between the magnet and the slider enables quick locking and releasing of the adjustment rod, eliminating the need for manual tools and significantly improving operational efficiency. This gives the device a dynamic adjustment function, allowing adjustment of the height of the side guide wheel to adapt to different ground flatness or obstacle heights, expanding its application scenarios. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 The attached figure is a structural schematic diagram of the height-adjustable mechanism provided by this utility model;

[0027] Figure 2 The attached image is... Figure 1 Enlarged view of section A in the attached figure;

[0028] Figure 3 The attached figure is a structural schematic diagram of the adjusting rod and positioning assembly provided by this utility model;

[0029] Figure 4 The attached figure is a schematic diagram of the circumferential arrangement of the positioning component, limiting block, upper limiting plate and lower limiting plate provided by this utility model;

[0030] Figure 5 The attached figure is a structural schematic diagram of the slider, limiting block, and magnet provided by this utility model;

[0031] Figure 6 The attached figure is a structural schematic diagram of the debris avoidance device for unmanned transport vehicles provided by this utility model;

[0032] Figure 7 The attached figure is a structural schematic diagram of the adjusting rod and the lateral guide wheel provided by this utility model;

[0033] Figure 8 The attached image is... Figure 1 Enlarged view of section B in the attached figure.

[0034] in:

[0035] 1-Adjusting rod; 11-Slot; 2-Mounting part; 21-Gate; 3-Magnet; 4-Slider; 41-Snap-fit ​​end; 5-Limiting block; 51-Groove; 52-Roller; 6-Upper limit plate; 7-Lower limit plate; 8-Car body; 81-Drive wheel; 82-Roller; 83-Connecting rod; 831-Mounting groove; 832-Magnet; 84-Shim. Detailed Implementation

[0036] 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.

[0037] See appendix Figure 1 To be continued Figure 5 This utility model discloses a height-adjustable mechanism, comprising:

[0038] Adjusting rod 1, the outer side wall of adjusting rod 1 has a plurality of spaced slots 11 along its length;

[0039] Mounting part 2 has a central through hole and is coaxially sleeved on the outside of adjusting rod 1. The inner wall of the central through hole has a groove facing the adjusting rod 1.

[0040] The positioning component includes a magnet 3 and a slider 4. The magnet 3 is fixed to the bottom of the slot 21. The slider 4 is radially slidably connected in the slot 21 and located between the adjusting rod 1 and the magnet 3. One end of the slider 4 is a snap-fit ​​end 41 that forms a detachable snap-fit ​​with the slot 11, and the other end is a magnetic structure with the same magnetic pole as the magnet 3.

[0041] When the adjusting rod 1 moves vertically, the locking end 41 disengages from the slot 11 and moves toward the magnet 3. When the adjusting rod 1 moves to the target position, the slider 4 moves toward the adjusting rod 1 under the repulsive force of the magnet 3, so that the locking end 41 engages with the slot 11, thereby fixing the adjusting rod 1.

[0042] To further optimize the above technical solution, the repulsive force generated by the magnetic structure of magnet 3 and slider 4 can overcome the friction when slider 4 moves. At the same time, it can also overcome the repulsive force generated by the magnetic structure of magnet 3 and slider 4 when adjusting rod 1 moves vertically, so that slider 4 moves towards magnet.

[0043] To further optimize the above technical solutions, such as Figure 2-5 As shown, the slot 21 is an annular slot, and there are multiple sliders 4 and magnets 3. The multiple sliders 4 and multiple magnets 3 correspond one-to-one and are arranged circumferentially in the slot 21.

[0044] To further optimize the above technical solution, the ends of magnet 3 and slider 4 near magnet 3 are both arc-shaped structures adapted to the shape of slot 21.

[0045] To further optimize the above technical solutions, such as Figure 4-5 As shown, a limit block 5 is fixed inside the slot 21 and on both sides of each slider 4. A groove 51 is provided on the side wall of the limit block 5 near the slider 4. A roller 52 is installed in the groove 51 and abuts against the side wall of the slider 4.

[0046] To further optimize the above technical solution, the cross-section of the slider 4 is T-shaped, and the locking end 41 and the groove wall of the slot 11 are adapted arc-shaped structures.

[0047] To further optimize the above technical solution, the outer diameters of both slider 4 and limit block 5 decrease sequentially from magnet 3 to adjusting rod 1.

[0048] To further optimize the above technical solutions, such as Figure 2As shown, an upper limit plate 6 and a lower limit plate 7 are fixed on the two groove walls of the groove 21, respectively, and the top and bottom surfaces of the slider 4 are slidably connected between the upper limit plate 6 and the lower limit plate 7.

[0049] To further optimize the above technical solution, the upper limit plate 6 and the lower limit plate 7 are made of the same material, graphite. When the slider 4 moves, the friction between the slider 4 and the groove 21 can be effectively reduced, thereby improving the smoothness of the slider 4 and reducing the wear of the slider 4.

[0050] See appendix Figure 6 To be continued Figure 8 This utility model discloses a debris avoidance device for an unmanned transport vehicle, including a vehicle body 8 and a height-adjustable mechanism installed on the vehicle body 8; a drive wheel 81 and a roller 82 are installed at the bottom of the vehicle body 8, and the mounting part 2 is fixed to the four corners of the vehicle body 8 by a connecting rod 83. The top and bottom ends of the adjusting rod 1 are respectively rotatably connected to a side guide wheel 9, and the rotation surface of the side guide wheel 9 covers the driving area of ​​the drive wheel 81, which is used to deflect debris to the outside of the vehicle body 8.

[0051] To further optimize the above technical solution, there are two drive wheels 81, which are arranged on one side of the vehicle body 8 along the width direction of the vehicle body 8. There are also two rollers 82, which are arranged on the other side of the vehicle body 8 along the width direction of the vehicle body 8. The drive wheels 81 provide active driving force, and the rollers 82 assist the vehicle body 8 in steering and balancing, ensuring that the vehicle can operate flexibly on complex paths. At the same time, they work in conjunction with the lateral guide wheels 9 to improve the overall performance and operating efficiency of the vehicle.

[0052] To further optimize the above technical solutions, such as Figure 7 As shown, a rubber strip 91 is bonded to the outer ring of the side guide wheel 9.

[0053] To further optimize the above technical solutions, such as Figure 8 As shown, a mounting groove 831 is provided at the end of the connecting rod 83 away from the mounting part 2, and a magnet 832 is fixed in the mounting groove 831.

[0054] To further optimize the above technical solution, the connecting rod 83 has an inherent gasket 84 on the outer side wall of one end of the magnet 832. The gasket 84 fits against the side wall of the vehicle body 8 and is fastened by fasteners.

[0055] To further optimize the above technical solution, when installing the connecting rod 83, it is necessary to fix the connecting rod 83 to the four corners of the vehicle body 8. The connecting rod 83 is first fixed to the side wall of the vehicle body 8 by the magnet 832, thereby temporarily fixing the connecting rod 83 to the side wall of the vehicle body 8. Then, the gasket 84 is put on the outside of the connecting rod and tightened by the fastener.

[0056] The embodiments of this utility model are as follows:

[0057] When the vehicle body 8 transports materials, the four side guide wheels 9 located outside the drive wheels 81 and rollers 82, with the side guide wheels 9 covering the driving surface of the drive wheels 12, will cause low-height debris to come into contact with the side guide wheels 9 first when the vehicle body 8 moves. When the debris comes into contact with the side guide wheels 9, the thrust of the vehicle body 8 during travel will act on the debris, and the side guide wheels 9 can rotate, so that when the debris comes into contact with the side guide wheels 9, it is subjected to force, deflecting the rotation of the side guide wheels 9 and pushing the debris to both sides of the side guide wheels 9. This causes the debris to be offset from the contact surface between the drive wheels 81 and the ground, thereby reducing the impact of debris on the equipment, reducing the possibility of equipment failure, and improving the stability of equipment operation.

[0058] Depending on the environment, the height of the side guide wheel 9 relative to the ground needs to be adjusted. When adjusting the height of the side guide wheel 9, pull the adjusting rod 1 upwards or press it downwards. Since the locking end 41 of the slider 4 and the end of the slot 11 are both arc-shaped structures, when the adjusting rod 1 is subjected to tension or pressure, the adjusting rod 1 will squeeze the slider 4 into the slot 21, causing the slider 4 to disengage from the slot 11. Then the position of the adjusting rod 1 can be moved. The end face of the slider 4 near the magnet 3 has a magnetic mechanism with the same magnetic pole as the magnet 3. When the slider 4 and the magnet 3 approach each other, they will generate a repulsive force. After moving to the appropriate position, the repulsive force between the magnet 3 and the slider 4 will push the slider 4 into the slot 11, thereby fixing the adjusting rod 1. This structure effectively facilitates the height adjustment of the equipment, thereby improving the applicability of the equipment and making it suitable for different usage environments.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0060] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A height adjustable mechanism, characterized by, The utility model relates to a height adjustable mechanism, including: Adjusting rod (1), the outside wall of adjusting rod (1) is opened with a plurality of interval arrangement's clamping groove (11) along its length direction; Mounting portion (2) is opened with the center through -hole, and coaxial sleeve is set in the outside of adjusting rod (1), and the inner wall of center through -hole is opened with the slot (21) to adjusting rod (1); Positioning assembly includes magnet (3) and slider (4), magnet (3) is fixed in the slot bottom of slot (21), slider (4) is radially slidingly connected in slot (21), and is located between adjusting rod (1) and magnet (3), one end of slider (4) is the clamping end (41) of the disengagement type clamping with clamping groove (11), and the other end is the magnetic structure of the same magnetic pole with magnet (3); Wherein, when adjusting rod (1) moves along the vertical direction, clamping end (41) moves to magnet (3) direction and is separated from clamping groove (11), when adjusting rod (1) moves to target position, slider (4) moves to adjusting rod (1) direction under the action of magnet (3) repulsion, so that clamping end (41) is clamped with clamping groove (11), and the fixing of adjusting rod (1) is realized.

2. A height adjustment mechanism according to claim 1, wherein, The slot (21) is an annular groove, the number of the slider (4) and the magnet (3) is multiple, the slider (4) and the magnet (3) are one-to-one corresponding and are circumferentially arranged in the slot (21).

3. A height adjustment mechanism according to claim 1, wherein, The slot (21) is fixed with a limiting block (5) on both sides of each slider (4), a groove (51) is formed on the side wall of the limiting block (5) close to the slider (4), a roller (52) is installed in the groove (51), and the roller (52) abuts against the side wall of the slider (4).

4. A height adjustment mechanism according to claim 3, wherein, The cross section of the slider (4) is T-shaped structure, and the slot wall of the clamping end (41) and the clamping groove (11) is arc structure.

5. A height adjustment mechanism according to claim 4, wherein, The outer diameters of the slider (4) and the limiting block (5) gradually decrease from the magnet (3) to the adjusting rod (1).

6. A height adjustment mechanism according to claim 1, wherein, Two slot walls of the slot (21) are respectively fixed with an upper limiting plate (6) and a lower limiting plate (7), and the top surface and the bottom surface of the slider (4) are respectively slidingly connected between the upper limiting plate (6) and the lower limiting plate (7).

7. An unmanned transport vehicle obstacle avoidance apparatus, comprising: The utility model relates to a height adjustable mechanism, including:

8. The device according to claim 7, wherein the device is characterized by: The bottom of the vehicle body (8) is provided with a driving wheel (81) and a rolling wheel (82), the mounting portion (2) is fixed at four corners of the vehicle body (8) through a connecting rod (83), the top end and the bottom end of the adjusting rod (1) are respectively rotatably connected with a lateral guide wheel (9), the rotation surface of the lateral guide wheel (9) covers the driving area of the driving wheel (81), and the lateral guide wheel (9) is used for deflecting sundries to the outside of the vehicle body (8). The outer ring of the lateral guide wheel (9) is bonded with a rubber strip (91).

9. The device according to claim 7, wherein the device is characterized by: The connecting rod (83) is provided with a mounting groove (831) at one end away from the mounting part (2), and a magnet (832) is fixed in the mounting groove (831).

10. The device according to claim 9, wherein the device is a device for an unmanned transport vehicle. The connecting rod (83) is provided with a gasket (84) on the outer side wall of one end of the magnet (832), the gasket (84) is attached to the side wall of the vehicle body (8), and is fastened by a fastener.

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