AGV trolley main drive wheel with bevel gear transmission structure

Abstract

The present application relates to AGV trolley main drive wheel technical field, specifically to a kind of AGV trolley main drive wheel with bevel gear transmission structure, including wheel rim, the outer side of wheel rim is covered with outer rubber, the inner side of wheel rim is provided with inner lining, the inner side of inner lining is provided with shaft sleeve main body, the inner side of shaft sleeve main body is evenly clamped with wear plate, shaft sleeve main body is sleeved on center shaft, the side of wheel rim is provided with driving mechanism, main drive wheel includes connecting mechanism and self-adapting mechanism, linkage between the respective first telescopic air bag and second telescopic air bag can effectively buffer the vibration of wear plate, in turn significantly improve the stability when wheel rim moves, when single wear plate appears abrasion, the eccentric moment generated by abrasion can be shared by the rest of each group of wear plate, effectively reduce the damage aggravation caused by change of shaft center distance.

Description

Technical Field

[0001] This invention relates to the field of AGV (Automated Guided Vehicle) main drive wheel technology, and more particularly to an AGV main drive wheel with a bevel gear transmission structure. Background Technology

[0002] As a key vehicle for efficiently transporting materials such as battery cells between workshop processes, the operational performance and stability of AGVs are of paramount importance. The main drive wheel of the AGV, as the core power output component, not only bears the heavy responsibility of providing the power needed for the vehicle to move forward and stop, but is also a key factor determining the smoothness and accuracy of the AGV's transportation process. It achieves power transmission and direction conversion through the meshing of bevel gears. When small warehouse AGVs perform short-distance transport tasks on flat ground, the sliding friction characteristics of the bushings are sufficient to meet the requirements. Bushings are generally cheaper than bearings, and their installation process is simpler. Furthermore, due to the maintenance-free nature of bushings, annual maintenance costs are significantly reduced.

[0003] In actual operation, the wear-resistant part of the main drive wheel bushing of the AGV is subjected to complex and high-intensity dynamic loads for a long time, including rolling friction, impact stress from sudden stops and starts, and lateral shear force during steering. These multiple effects inevitably lead to structural damage and material loss, with wear gradually increasing over time, accelerating sharply after exceeding a critical threshold. The increased clearance between the bushing and the drive shaft causes radial wobble and axial movement of the drive wheel, reducing the smoothness and accuracy of power transmission. This makes the AGV prone to deviation, slippage, and increased vibration during operation, reducing positioning accuracy and operating efficiency, and potentially even causing safety accidents. While the industry has developed special wear-resistant materials such as high-strength ceramic matrix composites and nano-modified alloys to combat wear, these materials involve advanced processes and scarce raw materials, resulting in complex production processes, low yield rates, and high costs. Replacing the entire bushing for routine wear alone is not only expensive but also wastes a large number of still usable components, leading to a waste of valuable materials and an increase in industrial solid waste.

[0004] To address this, a main drive wheel for an AGV (Automated Guided Vehicle) with a bevel gear transmission structure is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an AGV main drive wheel with a bevel gear transmission structure to solve the problems of increased wear and material waste mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an AGV trolley main drive wheel with a bevel gear transmission structure, comprising a wheel rim, an outer coating of rubber on the outer side of the wheel rim, an inner liner on the inner side of the wheel rim, a bushing body on the inner side of the inner liner, wear-resistant plates evenly clamped on the inner side of the bushing body, the bushing body being fitted onto a central shaft, a drive mechanism on the side of the wheel rim, and the main drive wheel comprising a connecting mechanism and an adaptive mechanism. The connecting mechanism can fix the bushing body onto the inner liner, thereby limiting the position of the wear-resistant plates and enabling the installation of the wear-resistant plates. Furthermore, it can assemble the adaptive mechanism, which can neutralize air pressure and automatically adjust the position of the wear-resistant plates to compensate for the effects of wear.

[0007] Preferably, the drive mechanism includes an annular bevel gear disposed on the side of the wheel rim, the inner liner and the annular bevel gear are fixedly connected to the wheel rim by screws, the central shaft is fixedly installed between two sets of side frames, the two sets of side frames are fixedly installed at the bottom end of the rotating wheel, the rotating wheel is rotatably connected to the bracket, and the bottom end of the rotating wheel is rotatably connected to a bevel gear, which meshes with the annular bevel gear.

[0008] Preferably, the connecting mechanism includes a movable groove formed on the inner side of the liner, with limiting grooves formed on both sides of the inner wall of the movable groove, and a first air supply channel and a second air supply channel formed inside the liner.

[0009] Preferably, a groove is provided on one side of the liner, and a first air inlet and a second air inlet are provided in the groove. The first air inlet is used to connect to the first air supply channel, and the second air inlet is used to connect to the second air supply channel.

[0010] Preferably, a limiting plate is slidably connected inside the limiting groove, and a locking post is fixedly connected to the side of the limiting plate near the center of the inner lining. A locking post groove is opened on the outer side of the bushing body. The end of the locking post near the center of the inner lining passes through the inner lining and is inserted into the locking post groove. A return spring is sleeved on the locking post and is set in the limiting groove.

[0011] Preferably, a top rod is fixedly connected to the side of the limiting plate away from the center of the inner lining. The end of the top rod away from the center of the inner lining penetrates the inner lining and extends to the outside of the inner lining. A notch is opened on one side of the top rod, and the length of the vertical projection of the notch is greater than the length of the top rod that can extend out of the inner lining.

[0012] Preferably, the adaptive mechanism includes a retaining hole on the inner side of the bushing body, a mounting groove on the outer side of the bushing body, a first air intake column in the mounting groove, one end of the first air intake column being connected to an air delivery channel, and the other end of the air delivery channel being connected to a second air intake column, which is retaining itself in the retaining column.

[0013] Preferably, a wear-resistant plate is fitted inside the card hole, and a first telescopic airbag is fitted on the outer side of the wear-resistant plate. The first telescopic airbag is fitted in the mounting groove. A limiting plate is fixedly connected to the side of the wear-resistant plate away from the center of the bushing body. The limiting plate is set in the movable groove. A second telescopic airbag is attached to the limiting plate. A third air intake column is fixedly installed on the side of the second telescopic airbag away from the center of the bushing body. The third air intake column penetrates the force plate and is fitted in the connecting frame. The connecting frame is fixedly connected between the two sets of limiting plates.

[0014] Preferably, the card column is provided with a first air intake channel and a second air intake channel. The first air intake channel passes through the limiting plate and the connecting frame and is used to connect the first air supply channel to the third air intake column. The second air intake channel is used to connect the second air supply channel to the second air intake column.

[0015] Preferably, the outer side of the retaining post is provided with a first sealing ring, a second sealing ring and a third sealing ring. The first sealing ring and the third sealing ring are used to prevent gas from leaking along the inner wall of the retaining post. The second sealing ring is used to separate the first air intake channel and the second air intake channel to prevent gas in the first air intake channel and the second air intake channel from crossing each other along the inner wall of the retaining post.

[0016] The beneficial effects of this invention are:

[0017] 1. This invention, through the design of a connecting mechanism in conjunction with an adaptive mechanism, adopts a snap-fit ​​method to replace the traditional threaded connection, which not only significantly improves the efficiency of disassembly and assembly but also enhances the stability and reliability of the connection. It also makes maintenance operations more convenient. Since it enables quick disassembly and assembly of the wear-resistant plates, only rare wear-resistant materials need to be used when manufacturing the wear-resistant plates. This not only facilitates the replacement of the wear-resistant plates but also effectively reduces the waste of rare materials.

[0018] 2. This invention, through the design of an adaptive mechanism, utilizes the interlocking action between several sets of first and second telescopic airbags to effectively buffer the vibration of the wear-resistant plates, thereby significantly improving the stability of the wheel rim during movement. When a single wear-resistant plate wears, the remaining sets of wear-resistant plates can share the eccentric moment caused by the wear, effectively reducing the aggravation of damage caused by changes in the axle center distance. Simultaneously, the pressure stabilization method of the first and second telescopic airbags, which alternately inflate and depressurize, allows the worn wear-resistant plates to be reused multiple times, avoiding frequent replacements and significantly saving operating costs. Furthermore, an external pressure gauge can be used to detect the internal air pressure of the first and second telescopic airbags through the first and second air inlets, thereby allowing for timely monitoring of the main drive wheel's operating status, facilitating timely problem detection and maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention 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 for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of the main drive wheel of an AGV (Automated Guided Vehicle) with a bevel gear transmission structure, according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 This is a three-dimensional schematic diagram of the main drive wheel of an AGV (Automated Guided Vehicle) with a bevel gear transmission structure, according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 3 This is an overall top view of the main drive wheel of an AGV trolley with a bevel gear transmission structure according to an embodiment of the present invention;

[0023] Figure 4 This invention relates to an AGV trolley with a bevel gear transmission structure as an embodiment of the main drive wheel. Figure 3 Schematic diagram of cross-section at point AA;

[0024] Figure 5 This invention relates to an AGV trolley with a bevel gear transmission structure as an embodiment of the main drive wheel. Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is a partial exploded view of the main drive wheel of an AGV (Automated Guided Vehicle) with a bevel gear transmission structure, according to an embodiment of the present invention. Figure 1 ;

[0026] Figure 7 This is a partial exploded view of the main drive wheel of an AGV (Automated Guided Vehicle) with a bevel gear transmission structure, according to an embodiment of the present invention. Figure 2 ;

[0027] Figure 8 This invention relates to an AGV trolley with a bevel gear transmission structure as an embodiment of the main drive wheel. Figure 7 Enlarged cross-sectional view at point C;

[0028] Figure 9 This is a partial exploded view of the main drive wheel of an AGV (Automated Guided Vehicle) with a bevel gear transmission structure, according to an embodiment of the present invention. Figure 3 ;

[0029] Figure 10 This invention relates to an AGV trolley with a bevel gear transmission structure as an embodiment of the main drive wheel. Figure 9 Enlarged diagram of point D in the middle.

[0030] The markings in the diagram are: 1. Outer coating; 2. Wheel rim;

[0031] 3. Lining; 31. Movable groove; 32. Restricting groove; 33. First air supply channel; 331. First air inlet; 332. First air intake channel; 34. Second air supply channel; 341. Second air inlet; 342. Second air intake channel; 35. Groove;

[0032] 4. Bushing body; 41. Snap-in hole; 42. Mounting groove; 421. First intake column; 43. Snap-in groove; 431. Second intake column; 432. Air delivery channel;

[0033] 5. Ring bevel gear;

[0034] 6. Central shaft; 61. Side frame; 62. Rotary wheel; 63. Bracket; 64. Bevel gear;

[0035] 7. Limiting plate; 71. Locking post; 72. Push rod; 721. Notch; 73. Return spring;

[0036] 8. Wear-resistant plate; 81. Limiting plate; 82. First telescopic airbag; 83. Second telescopic airbag; 83. Third air intake column; 84. Stress plate; 85. Connecting frame

[0037] 9. First sealing ring; 91. Second sealing ring; 92. Third sealing ring. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0039] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] Please see Figures 1 to 10This invention provides a technical solution: an AGV trolley main drive wheel with a bevel gear transmission structure, including a wheel rim 2, the outer side of the wheel rim 2 is covered with an outer coating 1, the inner side of the wheel rim 2 is provided with an inner liner 3, the inner side of the inner liner 3 is provided with a bushing body 4, the inner side of the bushing body 4 is uniformly fitted with wear-resistant plates 8, the bushing body 4 is sleeved on a central shaft 6, and a drive mechanism is provided on the side of the wheel rim 2. The main drive wheel includes a connecting mechanism and an adaptive mechanism. The connecting mechanism can fix the bushing body 4 to the inner liner 3, thereby limiting the position of the wear-resistant plates 8 and realizing the installation of the wear-resistant plates 8. It can also complete the assembly of the adaptive mechanism. The adaptive mechanism can neutralize the air pressure and automatically adjust the position of the wear-resistant plates 8 to compensate for the effects of wear.

[0041] As one embodiment of the present invention, such as Figure 1 , Figure 2 and Figure 6 As shown, the drive mechanism includes an annular bevel gear 5 mounted on the side of the wheel rim 2. The inner liner 3 and the annular bevel gear 5 are fixedly connected to the wheel rim 2 by screws. The central shaft 6 is fixedly mounted between two sets of side frames 61. The two sets of side frames 61 are fixedly mounted on the bottom end of the rotating wheel 62. The rotating wheel 62 is rotatably connected to the bracket 63. A bevel gear 64 is rotatably connected to the bottom end of the rotating wheel 62. The bevel gear 64 meshes with the annular bevel gear 5. One drive motor can drive the bevel gear 64 to rotate through the transmission structure. Because the side frame 61 meshes with the annular bevel gear 5, and the annular bevel gear 5 is fixedly mounted on the wheel rim 2, the motor can drive the wheel rim 2 to roll. Furthermore, because the central shaft 6 is fixedly connected to the bottom end of the rotating wheel 62 through the side frame 61, and the rotating wheel 62 is rotatably connected to the bevel gear 64, the other drive motor can drive the central shaft 6 at the bottom end of the rotating wheel 62 to rotate through the transmission structure, thereby adjusting the direction of the wheel rim 2. The transmission structure here is a conventional method and will not be described in detail.

[0042] As one embodiment of the present invention, such as Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 10As shown, the connecting mechanism includes a movable groove 31 formed on the inner side of the liner 3. Restriction grooves 32 are formed on both sides of the inner wall of the movable groove 31. A first air supply channel 33 and a second air supply channel 34 are formed inside the liner 3. A groove 35 is formed on one side of the liner 3. A first air inlet 331 and a second air inlet 341 are disposed in the groove 35. The first air inlet 331 is used to connect to the first air supply channel 33, and the second air inlet 341 is used to connect to the second air supply channel 34. A limiting plate 7 is slidably connected inside the restriction groove 32. The limiting plate 7 is close to the inner wall of the liner 3. A retaining post 71 is fixedly connected to one side of the center of the liner 3. A retaining post groove 43 is provided on the outer side of the bushing body 4. The end of the retaining post 71 near the center of the inner liner 3 passes through the inner liner 3 and is inserted into the retaining post groove 43. A return spring 73 is sleeved on the retaining post 71 and is set in the limiting groove 32. A push rod 72 is fixedly connected to the side of the limiting plate 7 away from the center of the inner liner 3. The end of the push rod 72 away from the center of the inner liner 3 passes through the inner liner 3 and extends to the outer side of the inner liner 3. A notch 721 is provided on one side of the push rod 72. The vertical projection length of the notch 721 is... The length of the push rod 72 is greater than the length of the inner liner 3. When it is necessary to install the inner liner 3 and the bushing body 4, first, the bushing body 4 is inserted into the inner liner 3. Then, the retaining groove 43 is inserted into the wheel rim 2, so that the wheel rim 2 presses the push rod 72 into the limiting groove 32 along the notch 721. This allows the push rod 72 to drive the outer end of the retaining post 71 to engage with the retaining post groove 43 on the outside of the inner liner 3 through the limiting plate 7, thus completing the fixation between the inner liner 3 and the bushing body 4. Then, the inner liner 3 and the ring bevel gear 5 are fixed to the wheel rim 2 with screws. When disassembly is required... When replacing or repairing the inner liner 3 and the bushing body 4, turn the screw to release the fixation between the inner liner 3 and the ring bevel gear 5. Then pull the inner liner 3 outward to disengage it from the wheel rim 2, thereby releasing the restriction of the inner wall of the wheel rim 2 on the top rod 72. Then, the restoring force of the return spring 73 drives the outer end of the locking pin 71 to disengage from the locking pin groove 43 through the limit plate 7, thereby releasing the fixation between the inner liner 3 and the bushing body 4. This is beneficial to use a snap-fit ​​connection instead of a traditional threaded connection, which not only greatly improves the efficiency of disassembly and assembly, but also improves the stability of the connection, increases reliability and ease of maintenance.

[0043] As one embodiment of the present invention, such as Figure 5 , Figure 7 and Figure 9As shown, the adaptive mechanism includes a retaining hole 41 on the inner side of the bushing body 4, and a mounting groove 42 on the outer side of the bushing body 4. A first air intake column 421 is disposed in the mounting groove 42, and one end of the first air intake column 421 is connected to an air supply channel 432. The other end of the air supply channel 432 is connected to a second air intake column 431, which is secured in a retaining post 71. A wear-resistant plate 8 is secured in the retaining hole 41, and a first telescopic airbag 82 is fitted on the outer side of the wear-resistant plate 8. The first telescopic airbag 82 is secured in the mounting groove 42. A limiting plate 81 is fixedly connected to the side of the wear-resistant plate 8 away from the center of the bushing body 4. The limiting plate 81 is disposed in a movable groove 31, and a second telescopic airbag 83 is attached to the limiting plate 81. The second telescopic airbag 83 is away from the center of the bushing body 4. A third air intake column 831 is fixedly installed on one side. The third air intake column 831 penetrates the force plate 84 and is locked in the connecting frame 85. The connecting frame 85 is fixedly connected between two sets of limiting plates 7. First, the third air intake column 831 on the second telescopic airbag 83 is inserted into the bottom end of the force plate 84 in the movable groove 31. Then, the first telescopic airbag 82 is sleeved on the wear-resistant plate 8. Next, the wear-resistant plate 8 is locked in the locking hole 41, so that the first telescopic airbag 82 is locked in the mounting groove 42, thereby connecting the first air intake column 421 to the inside of the first telescopic airbag 82. Finally, the bushing body 4 is sleeved on the inside of the inner liner 3, and the inner liner 3 is sleeved on the wheel rim 2. At this time, the limiting plate 7 drives the force plate 84 to move through the connecting frame 85, so that the first telescopic airbag 82 cooperates with the second telescopic airbag 82. The inflatable airbag 83 initially restricts the limiting plate 81, thereby initially installing the wear-resistant sheet 8. When the inner liner 3 fixes the bushing body 4 through the connecting mechanism, the first air intake channel 332 on the locking post 71 will connect with the first air supply channel 33, and the second air intake channel 342 on the locking post 71 will connect with the second air supply channel 34. At the same time, one end of the locking post 71 is engaged with the second air intake column 431 in the locking post groove 43, so that the second air intake channel 342 is connected with the air supply channel 432. The first sealing ring 9, the second sealing ring 91 and the third sealing ring 92 seal the two sets of air passages respectively, so that the first air intake nozzle 331 is connected to several sets of second telescopic airbags 8 through the first air supply channel 33, the first air intake channel 332 and the third air intake column 831. Inside the first telescopic airbag 82, the second air inlet 341 is connected to the first telescopic airbag 82 via the second air supply channel 34, the second air inlet channel 342, and the air delivery channel 432. Gas is then introduced through the first air inlet 331, allowing for adjustment of the internal air pressure of several sets of second telescopic airbags 83. This ensures that several sets of wear-resistant plates 8 are stably clamped onto the central shaft 6, facilitating quick assembly and disassembly of the wear-resistant plates 8. This not only makes replacement of the wear-resistant plates 8 easier but also reduces waste of rare materials. Furthermore, the linkage between the several sets of first telescopic airbags 82 and the several sets of second telescopic airbags 83 buffers the vibration of the wear-resistant plates 8.This significantly improves the stability of wheel rim 2 during movement.

[0044] As one embodiment of the present invention, such as Figure 5 , Figure 8 and Figure 10 As shown, the retaining post 71 has a first air intake channel 332 and a second air intake channel 342. The first air intake channel 332 passes through the limiting plate 7 and the connecting frame 85, and is used to connect the first air supply channel 33 to the third air intake column 831. The second air intake channel 342 is used to connect the second air supply channel 34 to the second air intake column 831. The outer side of the retaining post 71 is provided with a first sealing ring 9, a second sealing ring 91, and a third sealing ring 92. The first sealing ring 9 and the third sealing ring 92 are used to prevent gas from leaking along the inner wall of the retaining post 71. The sealing ring 91 is used to separate the first air intake channel 332 and the second air intake channel 342, preventing gas in the first air intake channel 332 and the second air intake channel 342 from flowing together along the inner wall of the retainer 71. When the wheel rim 2 is subjected to a large vibration force during rolling, the central shaft 6 will squeeze the wear-resistant plate 8. This set of wear-resistant plates 8 applies a compressive force to the second telescopic airbag 83 through the limiting plate 81. This compressive force will be evenly distributed to the other sets of second telescopic airbags 83 through the first air supply channel 33 and the first air intake channel 332, thereby providing a larger buffer force and reducing the impact of vibration. With small vibration amplitude, when the wear-resistant plate 8 wears, the wear-resistant plate 8 is compressed by the limiting plate 81 and becomes smaller. The air pressure in the other groups of second telescopic airbags 83 will neutralize and replenish the second telescopic airbag 83, thereby transporting the gas in the other groups of second telescopic airbags 83 into the second telescopic airbag 83, avoiding large displacement of the shaft center and reducing the aggravation of damage. Then, some of the gas in the first telescopic airbag 82 is discharged through the second air supply channel 34, allowing the limiting plate 81 to drive the wear-resistant plate 8 to move towards the center of the bushing body 4. Next, gas is injected into the first air supply channel 33. The second set of telescopic airbags 83 expands and squeezes the limiting plate 81, so that the set of wear-resistant plates 8 are once again attached to the central shaft 6. This is beneficial for the other sets of wear-resistant plates 8 to share the eccentricity caused by wear when a single wear-resistant plate 8 wears, thereby reducing the damage caused by changes in the shaft center distance. At the same time, with the pressure stabilization method of the first telescopic airbag 82 and the second telescopic airbag 83 being filled in one row, the worn wear-resistant plates 8 can be used multiple times, avoiding frequent replacement of wear-resistant plates 8 and greatly saving on usage costs.

[0045] Working principle: When it is necessary to install the inner liner 3 and the bushing body 4, first, the bushing body 4 is put into the inner liner 3. Then, the locking groove 43 is put into the wheel rim 2, so that the wheel rim 2 presses the push rod 72 into the limiting groove 32 along the notch 721. This allows the push rod 72 to drive the outer end of the locking pin 71 to be locked into the locking groove 43 on the outside of the inner liner 3 through the limiting plate 7, thus completing the fixation between the inner liner 3 and the bushing body 4. Then, the inner liner 3 and the ring bevel gear 5 are fixed to the wheel rim 2 with screws. When it is necessary to disassemble the inner liner 3 and the bushing body 4 for replacement and maintenance, the screws are turned to release the fixation between the inner liner 3 and the ring bevel gear 5. Then, the inner liner 3 is pulled outward to release the inner liner 3 from the wheel rim 2, releasing the restriction of the inner wall of the wheel rim 2 on the push rod 72. Then, the restoring force of the return spring 73 drives the outer end of the locking pin 71 to be released from the locking groove 43 through the limiting plate 7, thereby releasing the fixation between the inner liner 3 and the bushing body 4.

[0046] Insert the third air intake column 831 on the second telescopic airbag 83 into the bottom end of the force plate 84 in the movable groove 31, then put the first telescopic airbag 82 onto the wear-resistant plate 8, and then put the wear-resistant plate 8 into the locking hole 41, so that the first telescopic airbag 82 is locked into the mounting groove 42, thereby connecting the first air intake column 421 to the inside of the first telescopic airbag 82. Finally, put the bushing body 4 onto the inside of the inner liner 3, and put the inner liner 3 into the wheel rim 2. At this time, the limiting plate 7 drives the force plate 84 to move through the connecting frame 85, so that the first telescopic airbag 82 cooperates with the second telescopic airbag 83 to initially restrict the limiting plate 81, thereby initially installing the wear-resistant plate 8.

[0047] When the inner liner 3 is fixed to the bushing body 4 by the connecting mechanism, the first air intake channel 332 on the locking post 71 will be connected to the first air supply channel 33, and the second air intake channel 342 on the locking post 71 will be connected to the second air supply channel 34. At the same time, one end of the locking post 71 is engaged with the second air intake column 431 in the locking post groove 43, so that the second air intake channel 342 is connected to the air supply channel 432. The two sets of air passages are sealed by the first sealing ring 9, the second sealing ring 91 and the third sealing ring 92 respectively, so that the first air intake nozzle 331 passes through the first air supply channel 33 and the second air supply channel 34. An air intake channel 332 and a third air intake column 831 are connected to the interior of several sets of second telescopic airbags 83. At the same time, the second air intake nozzle 341 is connected to the interior of the first telescopic airbag 82 through the second air supply channel 34, the second air intake channel 342 and the air delivery channel 432. Finally, gas is filled in from the first air intake nozzle 331, which can adjust the internal air pressure of several sets of second telescopic airbags 83. Gas is filled in from the second air intake nozzle 341, which can adjust the internal air pressure of several sets of first telescopic airbags 82, thereby making several sets of wear-resistant plates 8 stably clamped on the central shaft 6.

[0048] When the rim 2 is subjected to significant vibration during rolling, the central shaft 6 will compress the wear-resistant plate 8. This set of wear-resistant plates 8 applies compressive force to the second telescopic airbag 83 through the limiting plate 81. This compressive force is distributed equally to other sets of second telescopic airbags 83 through the first air supply channel 33 and the first air intake channel 332, thereby providing a larger buffer force and reducing the vibration amplitude. When the wear-resistant plate 8 wears, the wear-resistant plate 8 becomes smaller due to the compression of the limiting plate 81, and the air pressure in other sets of second telescopic airbags 83 will affect the second telescopic airbags of that set. 83 is neutralized and replenished, so that the gas in the other group of second telescopic airbags 83 is delivered to the second telescopic airbag 83 of this group, so as to avoid large displacement of the shaft center and reduce the aggravation of damage. Then, some of the gas in the first telescopic airbag 82 is discharged through the second air supply channel 34, so that the limiting plate 81 can drive the wear-resistant plate 8 to move towards the center of the bushing body 4. Then, gas is filled from the first air supply channel 33, and the second telescopic airbag 83 of this group expands and squeezes the limiting plate 81, so that the wear-resistant plate 8 of this group is once again attached to the central shaft 6.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A main drive wheel for an AGV (Automated Guided Vehicle) with a bevel gear transmission structure, comprising a wheel rim (2), the outer side of which is covered with an outer rubber coating (1), the inner side of which is provided with an inner liner (3), the inner side of which is provided with a bushing body (4), the inner side of which is uniformly fitted with wear-resistant plates (8), the bushing body (4) being sleeved on a central shaft (6), and a drive mechanism being provided on the side of the wheel rim (2), characterized in that: The main drive wheel includes a connecting mechanism and an adaptive mechanism. The connecting mechanism can fix the bushing body (4) onto the inner liner (3), thereby limiting the position of the wear-resistant plate (8) and realizing the installation of the wear-resistant plate (8). It can also complete the assembly of the adaptive mechanism. The adaptive mechanism can neutralize the air pressure and automatically adjust the position of the wear-resistant plate (8) to compensate for the impact of wear. The connecting mechanism includes a movable groove (31) opened on the inner side of the liner (3), and a limiting groove (32) is opened on both sides of the inner wall of the movable groove (31). A first air supply channel (33) and a second air supply channel (34) are opened inside the liner (3). The adaptive mechanism includes a retaining hole (41) on the inner side of the bushing body (4), and a mounting groove (42) on the outer side of the bushing body (4). A first air intake column (421) is provided in the mounting groove (42). The first air intake column (421) is connected to one end of an air supply channel (432), and the other end of the air supply channel (432) is connected to a second air intake column (431). The second air intake column (431) is secured in a retaining column (71). A wear-resistant plate (8) is secured in the retaining hole (41), and a first telescopic airbag (82) is fitted on the outer side of the wear-resistant plate (8). The first telescopic airbag (82) is installed in the mounting groove (42). The wear-resistant plate (8) is fixedly connected to a limiting plate (81) on the side away from the center of the bushing body (4). The limiting plate (81) is set in the movable groove (31). The limiting plate (81) is attached to the second telescopic airbag (83). The second telescopic airbag (83) is fixedly installed on the side away from the center of the bushing body (4). The third air intake column (831) penetrates the force plate (84) and is installed in the connecting frame (85). The connecting frame (85) is fixedly connected between the two sets of limiting plates (7).

2. The main drive wheel of an AGV trolley with a bevel gear transmission structure according to claim 1, characterized in that, The drive mechanism includes an annular bevel gear (5) disposed on the side of the wheel rim (2). The inner liner (3) and the annular bevel gear (5) are fixedly connected to the wheel rim (2) by screws. The central shaft (6) is fixedly installed between two sets of side frames (61). The two sets of side frames (61) are fixedly installed at the bottom end of the rotating wheel (62). The rotating wheel (62) is rotatably connected to the bracket (63). The bottom end of the rotating wheel (62) is rotatably connected to a bevel gear (64), and the bevel gear (64) meshes with the annular bevel gear (5).

3. The main drive wheel of an AGV trolley with a bevel gear transmission structure according to claim 1, characterized in that, The inner liner (3) has a groove (35) on one side, and a first air inlet (331) and a second air inlet (341) are provided in the groove (35). The first air inlet (331) is used to connect to the first air supply channel (33), and the second air inlet (341) is used to connect to the second air supply channel (34).

4. The main drive wheel of an AGV trolley with a bevel gear transmission structure according to claim 1, characterized in that, The limiting groove (32) is internally connected to a limiting plate (7). The limiting plate (7) is fixedly connected to a locking post (71) on the side near the center of the inner lining (3). The outer side of the bushing body (4) is provided with a locking post groove (43). The end of the locking post (71) near the center of the inner lining (3) passes through the inner lining (3) and is inserted into the locking post groove (43). A reset spring (73) is sleeved on the locking post (71). The reset spring (73) is set in the limiting groove (32).

5. The main drive wheel of an AGV trolley with a bevel gear transmission structure according to claim 4, characterized in that, The limiting plate (7) is fixedly connected to a top rod (72) on the side away from the center of the inner lining (3). The end of the top rod (72) away from the center of the inner lining (3) passes through the inner lining (3) and extends to the outside of the inner lining (3). A notch (721) is opened on one side of the top rod (72). The length of the vertical projection of the notch (721) is greater than the length of the top rod (72) that can extend out of the inner lining (3).

6. The main drive wheel of an AGV trolley with a bevel gear transmission structure according to claim 4, characterized in that, The locking post (71) is provided with a first air intake channel (332) and a second air intake channel (342). The first air intake channel (332) passes through the limiting plate (7) and the connecting frame (85) and is used to connect the first air supply channel (33) to the third air intake column (831). The second air intake channel (342) is used to connect the second air supply channel (34) to the second air intake column (431).

7. The main drive wheel of an AGV trolley with a bevel gear transmission structure according to claim 4, characterized in that, The outer side of the locking post (71) is provided with a first sealing ring (9), a second sealing ring (91) and a third sealing ring (92). The first sealing ring (9) and the third sealing ring (92) are used to prevent gas from leaking along the inner wall of the locking post (71). The second sealing ring (91) is used to separate the first air intake channel (332) and the second air intake channel (342) to prevent the gas in the first air intake channel (332) and the second air intake channel (342) from crossing each other along the inner wall of the locking post (71).

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