AGV trolley main driving wheel with bevel gear transmission structure

Abstract

The invention relates to the technical field of AGV main driving wheels, in particular to an AGV main driving wheel with a bevel gear transmission structure, which comprises a wheel rim, the outer side of the wheel rim is coated with an outer coating colloid, the inner side of the wheel rim is provided with a lining, the inner side of the lining is provided with a shaft sleeve main body, and the inner side of the shaft sleeve main body is uniformly provided with wear-resistant sheets in a clamping manner. The shaft sleeve body is arranged on the center shaft in a sleeving mode, a driving mechanism is arranged on the side face of the rim, the main driving wheel comprises a connecting mechanism and a self-adaption mechanism, vibration of the wear-resisting piece can be effectively buffered through the linkage effect between the multiple sets of first telescopic air bags and second telescopic air bags, and then the stability of the rim during moving is remarkably improved; when a single wear-resisting piece is worn, the other groups of wear-resisting pieces can share the eccentric torque generated by wear, and the situation that damage is aggravated due to the fact that the axis distance is changed is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of the main drive wheels of AGV trolleys, and particularly to a main drive wheel of an AGV trolley with a bevel gear transmission structure. Background Art

[0002] As a key carrier for efficiently transporting materials such as battery wafers between workshop processes, the operating performance and stability of an AGV trolley are crucial. Among them, the main drive wheel of the AGV trolley, as the core power output component, not only shoulders the important responsibility of providing the power required for the trolley to move forward and stop, but is also a key factor determining the smoothness and accuracy of the AGV transportation process. It realizes power transmission and direction conversion through the meshing of bevel gears. When a small-scale warehousing AGV trolley performs short-distance handling tasks on a flat ground, the sliding friction characteristics of the bushing are sufficient to meet the requirements. The cost of the bushing is usually lower than that of the bearing, and the installation process is simpler. At the same time, due to the maintenance-free characteristics of the bushing, the annual maintenance cost will also be greatly reduced.

[0003] During actual operation, the wear-resistant part of the bushing of the main drive wheel of the AGV trolley bears complex and high-intensity dynamic loads for a long time, including rolling friction, impact stress during sudden stops and starts, and lateral shear force during steering. The combined effects inevitably lead to structural damage and material loss of the bushing. The wear amount gradually increases with time and accelerates sharply after breaking through the critical threshold. The clearance between the bushing and the drive shaft expands, causing radial wobbling and axial movement of the drive wheel, reducing the smoothness and accuracy of power transmission, making the AGV trolley prone to running off course, slipping, and increased vibration during driving, resulting in a decrease in positioning accuracy and operating efficiency, and even possibly triggering safety accidents. In response to wear, the industry has developed special anti-wear materials such as high-strength ceramic matrix composites and nano-modified alloy materials. However, these materials involve cutting-edge processes and scarce raw materials, with complex production processes, low yield rates, and high costs. If the bushing is replaced as a whole only due to conventional wear, not only is the procurement cost high, but also a large number of still valuable components will be wasted, causing waste of precious materials and an increase in industrial solid waste.

[0004] Therefore, a main drive wheel of an AGV trolley with a bevel gear transmission structure is proposed. Summary of the Invention

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

[0006] To achieve the above object, the present invention provides the following technical solution: A main drive wheel of an AGV with a bevel gear drive structure, including a wheel rim, the outer side of the wheel rim is covered with an outer colloidal body, a lining is arranged on the inner side of the wheel rim, a bushing main body is arranged on the inner side of the lining, wear-resistant sheets are evenly clamped on the inner side of the bushing main body, the bushing main body is sleeved on the central shaft, a drive mechanism is arranged on the side surface of the wheel rim, the main drive wheel includes a connecting mechanism and an adaptive mechanism, the connecting mechanism can fixedly install the bushing main body on the lining, thereby restricting the position of the wear-resistant sheets, realizing the installation of the wear-resistant sheets, and can complete the assembly of the adaptive mechanism, and the adaptive mechanism can neutralize the air pressure, automatically adjust the position of the wear-resistant sheets, and make up for the influence caused by wear.

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

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

[0009] Preferably, a groove is opened on one side of the lining, a first air inlet nozzle and a second air inlet nozzle are arranged in the groove, the first air inlet nozzle is used to communicate with the first air supply channel, and the second air inlet nozzle is used to communicate with the second air supply channel.

[0010] Preferably, a limiting plate is slidably connected inside the limiting groove, a clamping column is fixedly connected to the side of the limiting plate close to the center of the lining, a clamping column groove is opened on the outer side of the bushing main body, one end of the clamping column close to the center of the lining penetrates through the lining and is inserted into the clamping column groove, and a return spring is sleeved on the clamping column, and the return spring is arranged in the limiting groove.

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

[0012] Preferably, the adaptive mechanism includes a clamping hole opened on the inner side of the bushing main body, an installation groove is opened on the outer side of the bushing main body, a first air inlet column is arranged in the installation groove, one end of the first air inlet column is communicated with an air delivery channel, the other end of the air delivery channel is communicated with a second air inlet column, and the second air inlet column is clamped in the clamping column.

[0013] Preferably, a wear-resistant piece is clamped in the card hole, a first telescopic airbag is sleeved outside the wear-resistant piece, the first telescopic airbag is clamped in the placement groove, a limiting plate is fixedly connected to the side of the wear-resistant piece away from the center of the bushing body, the limiting plate is arranged in the moving groove, a second telescopic airbag is attached to the limiting plate, and a third air inlet column is fixedly installed on the side of the second telescopic airbag away from the center of the bushing body. The third air inlet column penetrates through the force-bearing plate and is clamped in the connecting frame, and the connecting frame is fixedly connected between the two limiting plates.

[0014] Preferably, a first air inlet channel and a second air inlet channel are formed in the clamping column. The first air inlet channel penetrates through the limiting plate and the connecting frame for connecting the first air supply channel to the third air inlet column, and the second air inlet channel is used for connecting the second air supply channel to the second air inlet column.

[0015] Preferably, a first sealing ring, a second sealing ring and a third sealing ring are arranged on the outer side of the clamping column. The first sealing ring and the third sealing ring are used to prevent gas from leaking along the inner wall of the clamping column, and the second sealing ring is used to separate the first air inlet channel and the second air inlet channel to avoid the gas in the first air inlet channel and the second air inlet channel from mixing with each other along the inner wall of the clamping column.

[0016] The beneficial effects of the present invention: 1. By designing a connection mechanism in cooperation with an adaptive mechanism and adopting a clamping method to replace the traditional threaded connection, the present invention not only significantly improves the disassembly and assembly efficiency, but also enhances the connection stability and reliability. At the same time, it makes the maintenance operation more convenient. Since the wear-resistant piece can be quickly disassembled and assembled, only rare wear-resistant materials need to be used for the wear-resistant piece during production. This not only facilitates the replacement of the wear-resistant piece, but also effectively reduces the waste of rare materials.

[0017] 2. By designing an adaptive mechanism and utilizing the linkage effect between several groups of first telescopic airbags and second telescopic airbags, the vibration of the wear-resistant piece can be effectively buffered, thereby significantly improving the stability when the wheel rim moves. When a single wear-resistant piece is worn, the remaining groups of wear-resistant pieces can share the eccentric moment caused by the wear, effectively reducing the aggravation of damage caused by the change of the axial center distance. At the same time, by means of the pressure stabilizing method of charging one row and discharging one row of the first telescopic airbag and the second telescopic airbag, the worn wear-resistant piece can be used multiple times, avoiding frequent replacement of the wear-resistant piece and greatly saving the use cost. In addition, by using an external pressure gauge through the first air inlet nozzle and the second air inlet nozzle, the internal air pressure of the first telescopic airbag and the second telescopic airbag can be detected, so that the operating state of the main drive wheel can be grasped in time, which is convenient for timely discovering problems and carrying out maintenance. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 This is the overall three-dimensional schematic diagram of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention Figure 1 ; Figure 2 This is the overall three-dimensional schematic diagram of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention Figure 2 ; Figure 3 This is the overall top view of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention; Figure 4 This is the Figure 3 Cross-sectional schematic diagram at A - A of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention; Figure 5 This is the Figure 4 Enlarged schematic diagram at B of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention; Figure 6 This is the partial exploded schematic diagram of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention Figure 1 ; Figure 7 This is the partial exploded schematic diagram of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention Figure 2 ; Figure 8 This is the Figure 7 Enlarged cross-sectional schematic diagram at C of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention; Figure 9 This is the partial exploded schematic diagram of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention Figure 3 ; Figure 10 This is the Figure 9 Enlarged schematic diagram at D of the main driving wheel of an AGV vehicle with a bevel gear transmission structure according to an embodiment of the present invention.

[0020] The markings in the figure are: 1. Outer wrapping colloid; 2. Rim; 3. Lining; 31. Movable groove; 32. Restricting groove; 33. First air supply channel; 331. First air inlet nozzle; 332. First air inlet passage; 34. Second air supply channel; 341. Second air inlet nozzle; 342. Second air inlet passage; 35. Groove 4. Bushing body; 41. Locking hole; 42. Placement groove; 421. First air inlet column; 43. Locking post groove; 431. Second air inlet column; 432. Air delivery channel 5. Annular bevel gear 6. Central shaft; 61. Side frame; 62. Runner; 63. Bracket; 64. Bevel gear 7. Limiting plate; 71. Locking post; 72. Thrust rod; 721. Notch; 73. Return spring 8. Wear-resistant sheet; 81. Restricting plate; 82. First telescopic airbag; 83. Second telescopic airbag; 831. Third air inlet column; 84. Stress plate; 85. Connecting frame 9. First sealing ring; 91. Second sealing ring; 92. Third sealing ring Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention in conjunction with specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0023] Please refer to Figures 1 to 10, the present invention provides a technical solution: a main drive wheel of an AGV with a bevel gear drive structure, including a wheel rim 2, an outer wrapping colloid 1 is covered on the outer side of the wheel rim 2, a lining 3 is arranged on the inner side of the wheel rim 2, a bushing body 4 is arranged on the inner side of the lining 3, wear-resistant pieces 8 are evenly clamped on the inner side of the bushing body 4, the bushing body 4 is sleeved on the central shaft 6, a drive mechanism is arranged on the side surface of the wheel rim 2, the main drive wheel includes a connecting mechanism and an adaptive mechanism, the connecting mechanism can fixedly install the bushing body 4 on the lining 3, thereby restricting the position of the wear-resistant piece 8, realizing the installation of the wear-resistant piece 8, and can complete the assembly of the adaptive mechanism, the adaptive mechanism can neutralize the air pressure, automatically adjust the position of the wear-resistant piece 8, and make up for the influence caused by wear.

[0024] As an embodiment of the present invention, as Figure 1 , Figure 2 and Figure 6 shown, the drive mechanism includes an annular bevel gear 5 arranged on the side surface of the wheel rim 2, the lining 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 side frames 61, the two side frames 61 are fixedly installed at the bottom end of the runner 62, the runner 62 is rotatably connected to the bracket 63, a bevel gear 64 is rotatably connected to the bottom end of the runner 62, the bevel gear 64 meshes with the annular bevel gear 5, a set of drive motors can drive the bevel gear 64 to rotate through a transmission structure. Because the side frame 61 meshes with the annular bevel gear 5 and the annular bevel gear 5 is fixedly installed on the wheel rim 2, the motor can drive the wheel rim 2 to roll. And because the central shaft 6 is fixedly connected to the bottom end of the runner 62 through the side frame 61 and the runner 62 is rotatably connected to the bevel gear 64, another set of drive motors can drive the central shaft 6 at the bottom end of the runner 62 to rotate through a transmission structure, thereby adjusting the direction of the wheel rim 2. The transmission structure here is a conventional means and will not be described in detail.

[0025] As an embodiment of the present invention, as Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 10As shown in the figure, the connecting mechanism includes a movable groove 31 formed on the inner side of the inner lining 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 inner lining 3. A groove 35 is formed on one side of the inner lining 3. A first air inlet nozzle 331 and a second air inlet nozzle 341 are arranged in the groove 35. The first air inlet nozzle 331 is used to communicate with the first air supply channel 33, and the second air inlet nozzle 341 is used to communicate with the second air supply channel 34. A limiting plate 7 is slidably connected inside the restriction groove 32. A clamping post 71 is fixedly connected to the side of the limiting plate 7 close to the center of the inner lining 3. A clamping post groove 43 is formed on the outer side of the sleeve body 4. One end of the clamping post 71 close to the center of the inner lining 3 penetrates through the inner lining 3 and is inserted into the clamping post groove 43. A return spring 73 is sleeved on the clamping post 71. The return spring 73 is arranged in the restriction groove 32. A push rod 72 is fixedly connected to the side of the limiting plate 7 away from the center of the inner lining 3. One end of the push rod 72 away from the center of the inner lining 3 penetrates through the inner lining 3 and extends to the outside of the inner lining 3. A notch 721 is formed on one side of the push rod 72. The length of the vertical projection of the notch 721 is greater than the length that the push rod 72 can extend out of the inner lining 3. When it is necessary to install the inner lining 3 and the sleeve body 4, first, the sleeve body 4 is sleeved inside the inner lining 3. Then, the clamping post groove 43 is sleeved inside the rim 2, so that the rim 2 presses the push rod 72 into the restriction groove 32 along the notch 721. Thus, the push rod 72 drives the outer end of the clamping post 71 to be clamped into the clamping post groove 43 on the outside of the inner lining 3 through the limiting plate 7, completing the fixation between the inner lining 3 and the sleeve body 4. Then, the inner lining 3 and the annular bevel gear 5 are fixed to the rim 2 by screws. When it is necessary to disassemble the inner lining 3 and the sleeve body 4 for replacement and repair, the screws are rotated to release the fixation between the inner lining 3 and the annular bevel gear 5. Then, the inner lining 3 is pulled outwards, so that the inner lining 3 is separated from the rim 2, releasing the restriction of the inner wall of the rim 2 on the push rod 72. Then, the restoring force of the return spring 73 drives the outer end of the clamping post 71 to disengage from the clamping post groove 43 through the limiting plate 7, thus releasing the fixation between the inner lining 3 and the sleeve body 4. This is conducive to using clamping instead of traditional threaded connection, which not only greatly improves the disassembly and assembly efficiency, but also improves the connection stability, increases the reliability and the convenience of maintenance.

[0026] As an embodiment of the present invention, as Figure 5 , Figure 7 and Figure 9As shown, the adaptive mechanism includes a clamping hole 41 formed inside the bushing body 4. An installation groove 42 is formed on the outer side of the bushing body 4. A first intake column 421 is arranged in the installation groove 42. One end of a gas transmission channel 432 communicates with the first intake column 421, and the other end of the gas transmission channel 432 communicates with a second intake column 431. The second intake column 431 is clamped inside the clamping column 71. A wear-resistant sheet 8 is clamped in the clamping hole 41. A first expansion airbag 82 is sleeved on the outer side of the wear-resistant sheet 8. The first expansion airbag 82 is clamped in the installation groove 42. A limiting plate 81 is fixedly connected to the side of the wear-resistant sheet 8 away from the center of the bushing body 4. The limiting plate 81 is arranged in the moving groove 31. A second expansion airbag 83 is attached to the limiting plate 81. A third intake column 831 is fixedly installed on the side of the second expansion airbag 83 away from the center of the bushing body 4. The third intake column 831 penetrates through the force-bearing plate 84 and is clamped inside the connecting frame 85. The connecting frame 85 is fixedly connected between two limiting plates 7. First, insert the third intake column 831 on the second expansion airbag 83 into the bottom end of the force-bearing plate 84 in the moving groove 31, then sleeve the first expansion airbag 82 onto the wear-resistant sheet 8, and then clamp the wear-resistant sheet 8 into the clamping hole 41 so that the first expansion airbag 82 is clamped in the installation groove 42, thereby connecting the first intake column 421 to the inside of the first expansion airbag 82. Finally, sleeve the bushing body 4 onto the inner side of the inner lining 3, and sleeve the inner lining 3 onto the wheel rim 2. At this time, the limiting plate 7 drives the force-bearing plate 84 to move through the connecting frame 85, so that the first expansion airbag 82 and the second expansion airbag 83 cooperate to initially limit the limiting plate 81, thereby initially installing the wear-resistant sheet 8. When the inner lining 3 fixes the bushing body 4 through the connecting mechanism, the first intake channel 332 formed on the clamping column 71 will be connected to the first air supply channel 33, and the second intake channel 342 formed on the clamping column 71 is connected to the second air supply channel 34. At the same time, one end of the clamping column 71 clamps the second intake column 431 in the clamping column groove 43, so that the second intake channel 342 is connected to the gas transmission channel 432, and the two air channels are respectively sealed by the first sealing ring 9, the second sealing ring 91 and the third sealing ring 92. The first air inlet nozzle 331 is connected to the inside of a number of second expansion airbags 83 through the first air supply channel 33, the first intake channel 332 and the third intake column 831. At the same time, the second air inlet nozzle 341 is connected to the first expansion airbag 82 through the second air supply channel 34, the second intake channel 342 and the gas transmission channel 432. Finally, gas is filled from the first air inlet nozzle 331 to adjust the internal air pressure of a number of second expansion airbags 83, and gas is filled from the second air inlet nozzle 341 to adjust the internal air pressure of a number of first expansion airbags 82, so that a number of wear-resistant sheets 8 are stably clamped on the central shaft 6, which is beneficial to the rapid disassembly and assembly of a number of wear-resistant sheets 8. It not only facilitates the replacement of the wear-resistant sheets 8, but also reduces the waste of rare materials, and uses the linkage between a number of first expansion airbags 82 and the linkage between a number of second expansion airbags 83 to buffer the vibration of the wear-resistant sheets 8.Greatly improve the stability of the movement of the rim 2.,

[0027] As an embodiment of the present invention, as Figure 5 , Figure 8 and Figure 10 shown, a first air inlet channel 332 and a second air inlet channel 342 are provided on the clamping post 71. The first air inlet channel 332 penetrates 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 inlet post 831. The second air inlet channel 342 is used to connect the second air supply channel 34 to the second air inlet post 431. A first sealing ring 9, a second sealing ring 91 and a third sealing ring 92 are arranged on the outer side of the clamping post 71. The first sealing ring 9 and the third sealing ring 92 are used to prevent gas from leaking along the inner wall of the clamping post 71. The second sealing ring 91 is used to separate the first air inlet channel 332 and the second air inlet channel 342 to prevent the gas in the first air inlet channel 332 and the second air inlet channel 342 from mixing with each other along the inner wall of the clamping post 71. When the rim 2 is subjected to a large vibration force during rolling, the central shaft 6 will squeeze the wear-resistant piece 8. This group of wear-resistant pieces 8 applies a squeezing force to the second expansion airbag 83 through the limiting plate 81. This squeezing force will be evenly distributed to other groups of second expansion airbags 83 through the first air supply channel 33 and the first air inlet channel 332, thereby providing a large buffering force and reducing the vibration amplitude. When the wear-resistant piece 8 wears, the size of this group of wear-resistant pieces 8 is reduced under the extrusion of the limiting plate 81. The air pressure in other groups of second expansion airbags 83 will neutralize and supplement this group of second expansion airbags 83, so that the gas in other groups of second expansion airbags 83 is transported into this group of second expansion airbags 83, avoiding a large offset of the axis center and reducing the aggravation of damage. Then, part of the gas in the first expansion airbag 82 is discharged through the second air supply channel 34, so that this group of limiting plates 81 can drive the wear-resistant piece 8 to move towards the center of the bushing body 4. Then, gas is filled into the first air supply channel 33, and this group of second expansion airbags 83 expands and squeezes the limiting plate 81, so that this group of wear-resistant pieces 8 fits onto the central shaft 6 again. This is beneficial for when a single wear-resistant piece 8 wears, using other groups of wear-resistant pieces 8 to share the eccentricity caused by wear, thereby reducing the aggravation of damage caused by the change of the axis center distance. At the same time, by means of the pressure stabilizing method of discharging and filling the first expansion airbag 82 and the second expansion airbag 83 in turn, the worn wear-resistant pieces 8 can be used multiple times, avoiding frequent replacement of the wear-resistant pieces 8 and greatly saving the use cost.

[0028] Working principle: When installing the inner liner 3 and the bushing body 4, first slip the bushing body 4 into the interior of the inner liner 3. Then, insert the stud groove 43 into the rim 2, causing the rim 2 to press the ejector rod 72 into the limiting groove 32 along the notch 721. As a result, the outer end of the stud 71 driven by the ejector rod 72 through the limiting plate 7 is snapped into the stud groove 43 on the outer side of the inner liner 3, completing the fixation between the inner liner 3 and the bushing body 4. Subsequently, fix the inner liner 3 and the annular bevel gear 5 to the rim 2 with screws. When it is necessary to disassemble the inner liner 3 and the bushing body 4 for replacement and repair, turn the screws to release the fixation between the inner liner 3 and the annular bevel gear 5. Then, pull the inner liner 3 outwards to disengage the inner liner 3 from the rim 2 and relieve the restriction of the inner wall of the rim 2 on the ejector rod 72. Next, the restoring force of the return spring 73 drives the outer end of the stud 71 to disengage from the stud groove 43 through the limiting plate 7, thus releasing the fixation between the inner liner 3 and the bushing body 4; Insert the third air inlet column 831 on the second expansion airbag 83 into the bottom end of the force plate 84 in the movable groove 31. Then, slip the first expansion airbag 82 over the wear-resistant piece 8. Next, snap the wear-resistant piece 8 into the card hole 41, causing the first expansion airbag 82 to be snapped into the placement groove 42, so that the first air inlet column 421 communicates with the interior of the first expansion airbag 82. Finally, slip the bushing body 4 over the inner side of the inner liner 3 and slip the inner liner 3 into the rim 2. At this time, the limiting plate 7 drives the force plate 84 to move through the connecting frame 85, enabling the first expansion airbag 82 and the second expansion airbag 83 to initially restrict the limiting plate 81, thereby initially installing the wear-resistant piece 8; When the inner liner 3 fixes the bushing body 4 through the connecting mechanism, the first air inlet passage 332 formed on the stud 71 will be connected to the first air supply passage 33, and the second air inlet passage 342 formed on the stud 71 will be connected to the second air supply passage 34. At the same time, one end of the stud 71 is snapped onto the second air inlet column 431 in the stud groove 43, causing the second air inlet passage 342 to communicate with the air delivery passage 432. And the two air passages are respectively sealed by the first sealing ring 9, the second sealing ring 91, and the third sealing ring 92. The first air inlet nozzle 331 communicates with the interiors of a number of second expansion airbags 83 through the first air supply passage 33, the first air inlet passage 332, and the third air inlet column 831. At the same time, the second air inlet nozzle 341 communicates with the first expansion airbag 82 through the second air supply passage 34, the second air inlet passage 342, and the air delivery passage 432. Finally, when gas is filled from the first air inlet nozzle 331, the internal air pressure of a number of second expansion airbags 83 can be adjusted. When gas is filled from the second air inlet nozzle 341, the internal air pressure of a number of first expansion airbags 82 can be adjusted, so that a number of wear-resistant pieces 8 are stably clamped on the central shaft 6; When the rim 2 is subjected to a large vibration force during rolling, the central shaft 6 will squeeze the wear-resistant piece 8. This set of wear-resistant pieces 8 applies a squeezing force to the second expansion airbag 83 through the limiting plate 81. This squeezing force will be evenly distributed into the second expansion airbags 83 of other groups through the first air supply channel 33 and the first air intake channel 332, so as to provide a large buffering force and reduce the vibration amplitude. When the wear-resistant piece 8 wears, the squeezing force on this set of wear-resistant pieces 8 by the limiting plate 81 becomes smaller, and the air pressure in the second expansion airbags 83 of other groups will neutralize and supplement this set of second expansion airbags 83, so that the gas in the second expansion airbags 83 of other groups is transported into this set of second expansion airbags 83, avoiding a large deviation of the axis center and reducing the aggravation of damage. Then, part of the gas in the first expansion airbag 82 is discharged through the second air supply channel 34, so that this set of limiting plates 81 can drive the wear-resistant piece 8 to move towards the center of the bushing body 4. Then, gas is filled into the first air supply channel 33, and this set of second expansion airbags 83 expands to squeeze the limiting plate 81, so that this set of wear-resistant pieces 8 fits onto the central shaft 6 again.

[0029] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0030] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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. An AGV small vehicle main drive wheel with a bevel gear drive structure, including a wheel rim (2), an outer colloidal body (1) is coated on the outer side of the wheel rim (2), a lining (3) is arranged on the inner side of the wheel rim (2), a bushing body (4) is arranged on the inner side of the lining (3), wear-resistant sheets (8) are evenly clamped on the inner side of the bushing body (4), the bushing body (4) is sleeved on a central shaft (6), and a drive mechanism is arranged on the side surface of the wheel rim (2), and it is characterized in that: The main drive wheel includes a connection mechanism and an adaptive mechanism. The connection mechanism can fixedly install the bushing body (4) on the lining (3), thereby restricting the position of the wear-resistant sheet (8) to realize the installation of the wear-resistant sheet (8), and can complete the assembly of the adaptive mechanism. The adaptive mechanism can neutralize air pressure, automatically adjust the position of the wear-resistant sheet (8), and make up for the influence caused by wear.

2. The main drive wheel of the AGV vehicle with a bevel gear drive structure according to claim 1, characterized in that, The drive mechanism includes an annular bevel gear (5) arranged on the side surface of the wheel rim (2). The lining (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 side frames (61). The two side frames (61) are fixedly installed at the bottom end of a runner (62). The runner (62) is rotatably connected to a bracket (63). A bevel gear (64) is rotatably connected to the bottom end of the runner (62), and the bevel gear (64) meshes with the annular bevel gear (5).

3. The main drive wheel of an AGV vehicle with a bevel gear drive structure according to claim 2, characterized in that, The connection mechanism includes a movable groove (31) opened on the inner side of the lining (3). Limiting grooves (32) are 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 lining (3).

4. The main drive wheel of an AGV vehicle with a bevel gear drive structure according to claim 3, characterized in that, A groove (35) is opened on one side of the lining (3). A first air inlet nozzle (331) and a second air inlet nozzle (341) are arranged in the groove (35). The first air inlet nozzle (331) is used for communicating with the first air supply channel (33), and the second air inlet nozzle (341) is used for communicating with the second air supply channel (34).

5. The main drive wheel of an AGV vehicle with a bevel gear drive structure according to claim 3, characterized in that A limiting plate (7) is slidably connected inside the limiting groove (32). A clamping column (71) is fixedly connected to the side of the limiting plate (7) close to the center of the lining (3). A clamping column groove (43) is opened on the outer side of the bushing body (4). One end of the clamping column (71) close to the center of the lining (3) penetrates through the lining (3) and is inserted into the clamping column groove (43). A return spring (73) is sleeved on the clamping column (71), and the return spring (73) is arranged inside the limiting groove (32).

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

7. The main drive wheel of the AGV trolley with a bevel gear drive structure according to claim 1, characterized in that, The adaptive mechanism includes a clamping hole (41) formed inside the bushing body (4). An installation groove (42) is formed on the outer side of the bushing body (4). A first air inlet column (421) is arranged in the installation groove (42). One end of an air delivery channel (432) is communicated with the first air inlet column (421). The other end of the air delivery channel (432) is communicated with a second air inlet column (431). The second air inlet column (431) is clamped in a clamping column (71).

8. The main drive wheel of an AGV vehicle with a bevel gear drive structure according to claim 7, characterized in that, A wear-resistant sheet (8) is clamped in the clamping hole (41). A first telescopic airbag (82) is sleeved on the outer side of the wear-resistant sheet (8). The first telescopic airbag (82) is clamped in the installation groove (42). A limiting plate (81) is fixedly connected to the side of the wear-resistant sheet (8) away from the center of the bushing body (4). The limiting plate (81) is arranged in a moving groove (31). A second telescopic airbag (83) is attached to the limiting plate (81). A third air inlet column (831) is fixedly installed on the side of the second telescopic airbag (83) away from the center of the bushing body (4). The third air inlet column (831) penetrates through a stress plate (84) and is clamped in a connecting frame (85). The connecting frame (85) is fixedly connected between two limiting plates (7).

9. The main drive wheel of an AGV vehicle with a bevel gear drive structure according to claim 5, characterized in that A first air inlet channel (332) and a second air inlet channel (342) are formed on the clamping column (71). The first air inlet channel (332) penetrates through the limiting plate (7) and the connecting frame (85) to communicate the first air supply channel (33) to the third air inlet column (831). The second air inlet channel (342) is used to communicate the second air supply channel (34) to the second air inlet column (431).

10. The main drive wheel of an AGV vehicle with a bevel gear drive structure according to claim 5, characterized in that, A first sealing ring (9), a second sealing ring (91), and a third sealing ring (92) are arranged on the outer side of the clamping column (71). The first sealing ring (9) and the third sealing ring (92) are used to prevent gas from leaking along the inner wall of the clamping column (71). The second sealing ring (91) is used to separate the first air inlet channel (332) and the second air inlet channel (342) to avoid the gas in the first air inlet channel (332) and the second air inlet channel (342) from mixing with each other along the inner wall of the clamping column (71).

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