An aerial transport vehicle device capable of smoothly traveling through corners

Abstract

The present invention discloses an aerial transport vehicle device capable of smoothly traveling around corners, relating to the technical field of aerial transport vehicles, comprising an OHT vehicle body, a rear drive seat and a front drive seat, wherein the rear drive seat and the front drive seat are respectively mounted on both sides of the top end of the OHT vehicle body, a front drive shaft and a rear drive shaft are respectively provided inside the front drive seat and the rear drive seat, and a connecting seat is provided at the top end of the OHT vehicle body and between the rear drive seat and the front drive seat; the present invention ensures that the speeds of the wheels 1 of the front drive shaft and the rear drive shaft remain consistent during straight-line travel, the gap between the wheel 2 and the pad is adjusted by means of a gasket, the limit plate and the wheel pair are clamped at the top end of a T-shaped track, thereby increasing the friction between the wheel 1 and the track and preventing the wheel from slipping, and the counterweight can be moved to a suspended position away from the OHT vehicle to ensure that the OHT vehicle will not fall or overturn.

Description

Technical Field

[0001] The present invention relates to the technical field of aerial transport vehicles, in particular to an aerial transport vehicle device capable of smoothly traveling and turning. Background Art

[0002] The OHT trolley is a suspended automated material handling device widely used in cleanroom environments in high-end manufacturing industries such as semiconductors and panel manufacturing. It operates on an elevated track system and is used to transport sensitive materials such as wafer cassettes and glass substrates between production lines. The requirements for high operational stability of the OHT are becoming increasingly stringent. The OHT's wheels are generally arranged with two wheels on the front axle and two wheels on the rear axle, each driven by a motor.

[0003] The OHT trolley often runs unsteadily during operation. Since the OHT's running tracks are divided into straight tracks and curved tracks, when the OHT is running on the straight track, the front and rear axle motors have the same speed, the front axle and the rear axle have the same speed, and the front and rear axles are in a synchronized state. However, when the OHT trolley passes through the curved position of the track, one of the wheels cannot contact the track, and the remaining three wheels are needed to drive the OHT trolley. The front wheels rotate on the curved track and the rear wheels rotate on the straight track. There will always be a speed difference caused by the front and rear wheels dragging each other, which will cause the vehicle under the OHT trolley to shake, the positioning accuracy to decrease, the transmission system to make abnormal noises and other problems. Moreover, when only one front wheel is on the curved track section, the friction of the front wheel is small, and it is difficult to drive the trolley. Even the other wheel suspended in the air will cause the OHT trolley to roll over or fall. Summary of the Invention

[0004] The purpose of the present invention is to provide an aerial transport vehicle device that can smoothly travel around corners, so as to solve the above-mentioned technical problems existing in the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] The camshaft is an L-shaped track that is pivotally connected to the front and rear wheels of the vehicle. The camshaft is an L-shaped track that is pivotally connected to the front and rear wheels of the vehicle. The camshaft is an L-shaped track that is pivotally connected to the front and rear wheels of the vehicle. The camshaft is an L-shaped track that is pivotally connected to the front and rear wheels of the vehicle.

[0007] As a preferred technical solution of the present invention, a height adjustment structure is provided between the curved rail section and the pad, and the height adjustment structure includes a plurality of gaskets and bolts. The gaskets are provided at both ends of the pad, and the bolts pass through the pad and the gasket, and the ends of the bolts are fixed to the curved rail section. The gap between the wheel 2 and the pad is adjusted by means of gaskets.

[0008] As a preferred technical solution of the present invention, a track merging structure is provided at both ends of the front drive shaft and at the position of wheel two, and the track merging structure includes a stepped hole, which is opened on the end face of wheel two, and a limiting plate and a connecting rod are provided inside the stepped hole, the limiting plate and the connecting rod are manufactured as one piece, and limiting bolts are respectively provided at both ends of the front drive shaft, and a limiting groove is provided inside the connecting rod and at the position of the limiting bolt, the limiting bolt passes through the limiting groove, and the limiting bolt is slidingly connected to the inside of the limiting groove, and a telescopic spring is provided on the outside of the connecting rod, and the limiting plate floats along the axial direction of the front drive shaft, and a circle of chamfered angles is provided on the edge of the limiting plate, and the chamfered angles of the limiting plate are in contact with the outer edges of the curved track section and the straight track section of the track.

[0009] As a preferred technical solution of the present invention, reserved grooves are provided at the intersection of the curved rail section and the straight rail section, and at the intersection of the tangent of the curved rail section and the straight rail section. The depth position of each reserved groove is adapted to the bottom position of the limit plate, and the chamfered angle of the limit plate is used to smoothly enter the interior of the reserved groove.

[0010] As a preferred technical solution of the present invention, the connecting rod of the limit plate is slidably connected to the inside of the stepped hole, connecting holes are opened at both ends of the outer cylindrical surface of the front drive shaft, the limiting bolt is located inside the connecting hole, the groove length of the limiting groove is adapted to the floating distance of the limit plate, and the limit plate has a tendency to move toward the inside of the front drive shaft under the action of the telescopic spring.

[0011] As a preferred technical solution of the present invention, the two ends and the edge of the front drive seat are provided with a center of gravity adjustment structure, the center of gravity adjustment structure includes a screw, the screw is provided on the edge of the front drive seat, the middle thread of the screw is connected to the counterweight block, a guide groove is provided at the edge of the front drive seat and at the counterweight block, the counterweight block is slidably connected to the inside of the guide groove, gear three and gear five are respectively provided at both ends of the screw, floating holes are provided at both ends of the front drive seat, and the interior of the two floating holes are provided with an integrally manufactured fixed shaft, connecting shaft, gear two, and gear two is located at the fixed At the middle position of the shaft and the connecting shaft, the ends of the two connecting shafts are installed with matching plates, and the outer circular surfaces of the limit plates at both ends of the front drive shaft are provided with matching grooves, which are movably connected to the edges of the matching plates, and the matching grooves and the matching plates move along the axial direction of the front drive shaft. Gear four is provided at one end of the front drive seat and is located between gear three and gear two, and gear three, gear four, gear two and gear one correspond to each other in sequence. Gear six and gear seven are provided at the other end of the front drive seat and are located between gear five and gear two, and gear five, gear six, gear seven, gear two and gear one correspond to each other in sequence.

[0012] As a preferred technical solution of the present invention, when the two limit plates are in contact with the outer edge of the curved track section of the track, the two limit plates are away from the inside of the front drive shaft, and the two gears 2 are separated from gear 1.

[0013] As a preferred technical solution of the present invention, when wheel one at gear five is separated from the curved track section and the straight track section of the track, the limit plates near gear five all move toward the inner direction of the front drive shaft, and gear one, gear two, gear seven, gear six and gear five near gear five are meshed in sequence, the counterweight block approaches the position of gear three, and the overall center of gravity of the OHT trolley body approaches the position of gear three.

[0014] As a preferred technical solution of the present invention, when wheel one at gear three is separated from the curved track section and the straight track section of the track, the limit plates near gear three all move toward the inner direction of the front drive shaft, gear one, gear two, gear four and gear three near gear three are meshed in sequence, the counterweight block approaches the position of gear five, and the overall center of gravity of the OHT trolley body approaches the position of gear five.

[0015] As a preferred technical solution of the present invention, the surface of the front drive seat and the two ends of the screw are bolted with mounting seats, the mounting seats are rotatably connected to the two ends of the screw, the screw consists of a threaded section and a smooth section, and the smooth sections are located at both ends of the screw, and springs are provided at both ends of the guide groove, and the ends of the springs in the extended state are aligned with the ends of the threaded section.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] A double-wheel structure is provided. In the straight track section, wheel one can be used to contact the straight track section, thereby ensuring that the speed of wheel one of the front drive shaft and the rear drive shaft remains consistent when driving in a straight line; when turning, wheel two contacts and is subjected to force by the pad on the curved track section, and the OHT trolley tilts to one side. At this time, wheel two contacts and is subjected to force by the pad, and the large wheel is separated from the track, and the trolley relies on wheel two on the side of the trolley to turn; the gap between wheel two and the pad is adjusted by using shims. This turning method can greatly reduce the impact of the front and rear wheel differential problem, and is more stable when passing through the curved track section;

[0018] A track merging structure is provided, in which a limit plate and a pair of wheels are clamped at the top of a T-shaped track to increase the friction between the wheel and the track, prevent the wheel from slipping, and ensure that the OHT trolley passes smoothly through the curved and straight sections of the track. The limit plate is pulled inward by a telescopic spring, so that the chamfered angle of the limit plate can smoothly enter the reserved groove, and the wheels of the OHT trolley pass through the suspended track more smoothly.

[0019] A center of gravity adjustment structure is provided. When the OHT trolley is walking on the straight track section, the counterweight block does not affect the movement of the OHT trolley at any position of the lead screw; when there is only one wheel 1 suspended at the intersection of the curved track section and the straight track section, the position of the limit plate at the suspended position changes, which can drive the position of gear 2 to change, thereby driving the gear set to move the counterweight block along the lead screw, and the counterweight block can be moved to a position away from the suspended position of the OHT trolley, ensuring that the OHT trolley will not fall or overturn. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the main structure diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the double-wheel structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the OHT trolley body of the present invention passing through a curved track section;

[0023] Figure 4 This is a schematic diagram of a pad at a curved track section of the present invention;

[0024] Figure 5 It is a schematic diagram of the track-joining structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the position where the limit plate of the present invention passes through the reserved groove;

[0026] Figure 7 Schematic diagram of the meshing of gear 2 and gear 7 of the present invention;

[0027] Figure 8Schematic diagram of the meshing of gear 2 and gear 4 of the present invention;

[0028] Figure 9 It is a schematic diagram of the synchronous movement of the matching plate and the limiting plate of the present invention.

[0029] In the figure: 1. OHT trolley body; 2. Rear drive seat; 3. Front drive seat; 4. Front drive shaft; 5. Rear drive shaft; 6. Connecting seat; 7. Double wheel structure; 8. Parallel track structure; 9. Center of gravity adjustment structure; 71. Curved track section; 72. Pad; 73. Wheel 1; 74. Wheel 2; 75. Straight track section; 76. Reserved groove; 81. Step hole; 82. Limit plate; 83. Chamfered angle; 84. Connecting rod; 85. Limit Positioning slot; 86, limiting bolt; 87, connecting hole; 88, telescopic spring; 91, gear one; 92, floating hole; 93, fixed shaft; 94, gear two; 95, connecting shaft; 96, matching plate; 97, matching slot; 98, mounting seat; 99, lead screw; 910, counterweight; 911, guide slot; 912, gear three; 913, gear four; 914, gear five; 915, gear six; 916, gear seven. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-4As shown, an aerial transport vehicle device that can smoothly walk through a curve includes an OHT trolley body 1, a rear drive seat 2 and a front drive seat 3. The rear drive seat 2 and the front drive seat 3 are respectively installed on both sides of the top of the OHT trolley body 1. The interior of the front drive seat 3 and the interior of the rear drive seat 2 are respectively provided with a front drive shaft 4 and a rear drive shaft 5. The front drive seat 3 can be located at the top of the OHT trolley body 1 and deflected left and right, so that the OHT trolley body 1 can deflect when passing through the curved track section 71 of the track, and the interiors of the rear drive seat 2 and the front drive seat 3 are provided with a front drive shaft 4 and a rear drive shaft 5. The driving source for the rotation of the driving shaft 5 can be a motor, which drives the front driving shaft 4 and the rear driving shaft 5 through the driving source, so that the OHT trolley body 1 can move along the track. A connecting seat 6 is provided at the top of the OHT trolley body 1 and located between the rear driving seat 2 and the front driving seat 3. Both ends of the front driving shaft 4 and the rear driving shaft 5 are provided with a double wheel structure 7. The double wheel structure 7 includes a track composed of a curved track section 71 and a straight track section 75. The curved track section 71 and the straight track section 75 are used as the track for the OHT trolley body 1 to walk. When the OHT trolley moves along the track, it is divided into two steps: moving along the curved track section 71 and moving along the straight track section 75. The OHT trolley moves along the straight track section 75. The OHT trolley is relatively stable when moving along the curved track section 71. The OHT trolley is unstable when moving along the straight track section 75. In order to solve the unstable situation of the OHT trolley along the straight track section 75, the OHT trolley can be smoothly moved through the straight track section 75 by the following operations. Specifically, the cross-section of the curved track section 71 and the straight track section 75 is L-shaped. A pad 72 is installed at the top of the curved track section 71. Wheels 1 73 and wheels 2 74 are provided at both ends of the front drive shaft 4 and the rear drive shaft 5. Each wheel 1 73 is aligned with the curved track section 71. Corresponding to the L-shaped middle position of the straight rail section 75, each wheel two 74 corresponds to the L-shaped top position of the curved rail section 71 and the straight rail section 75. The OHT trolley uses wheel one 73 when driving in a straight line normally. When driving in a straight line, the speed of wheel one 73 of the front drive shaft 4 and wheel one 73 of the rear drive shaft 5 are kept consistent, and wheel two 74 does not contact the track; when turning, wheel two 74 at the front drive shaft 4 is in contact with the pad 72 and is subjected to force, and the front end of the OHT trolley tilts to one side. At this time, wheel two 74 is in contact with the pad 72 and is subjected to force, and wheel one 73 is out of contact with the track, relying on wheel two 74 on one side to turn.

[0032] like Figure 2 、 Figure 4As shown, a height adjustment structure is provided between the curved track section 71 and the pad 72. The height adjustment structure includes a plurality of gaskets and bolts. The gaskets are provided at both ends of the pad 72, and the bolts pass through the pad 72 and the inside of the gasket, and the ends of the bolts are fixed to the curved track section 71. The gap between the wheel 2 74 and the pad 72 is adjusted by means of gaskets, and the gap between the wheel 2 74 and the pad 72 is adjusted by means of adjusting the height of the pad 72. This cornering method can greatly reduce the impact of the front and rear wheel differential problem.

[0033] like Figure 1 、 Figure 5 and Figure 6 As shown, a track-joining structure 8 is provided at both ends of the front drive shaft 4 and at the position of the second wheel 74. The track-joining structure 8 includes a stepped hole 81. The stepped hole 81 is opened on the end face of the second wheel 74, and a limit plate 82 and a connecting rod 84 are provided inside the stepped hole 81. The limit plate 82 and the connecting rod 84 are manufactured as one piece. A limit bolt 86 is provided at each end of the front drive shaft 4. A limit slot 85 is provided inside the connecting rod 84 and at the position of the limit bolt 86. The limit bolt 86 passes through the limit slot 85, and the limit bolt 86 is slidably connected to the inside of the limit slot 85. The limit plate 82 and the connecting rod 84 are inserted into the two ends of the front drive shaft 4, and then the limit bolt 86 is used to join the two ends of the front drive shaft 4. Inserted into the interior of the limit groove 85, so that the limit groove 85 of the connecting rod 84 floats relative to the limit bolt 86, and the external sleeve of the connecting rod 84 is provided with a telescopic spring 88. The limit plate 82 floats along the axial direction of the front drive shaft 4, and the telescopic spring 88 is used to always pull the limit plate 82 toward the middle. The limit plate 82 is usually restricted by the track so that the OHT trolley body 1 is restricted between the tracks. A circle of chamfered angles 83 is provided on the edge of the limit plate 82. The chamfered angles 83 of the limit plate 82 are in contact with the outer edges of the curved track section 71 and the straight track section 75 of the track. The chamfered angles 83 of the limit plate 82 and the wheel 73 can ensure that the wheel is always located at the straight track section 75 of the track.

[0034] like Figure 3 、 Figure 6 As shown, reserved grooves 76 are provided at the intersection of the curved track section 71 and the straight track section 75, and at the intersection of the tangent of the curved track section 71 and the straight track section 75. The depth position of each reserved groove 76 is adapted to the bottom end position of the limit plate 82. The chamfered angle 83 of the limit plate 82 is used to smoothly enter the interior of the reserved groove 76. The suspended wheel 1 73 and the limit plate 82 are aligned with the reserved groove 76, so that the suspended wheel 1 73 and the limit plate 82 can smoothly enter the reserved groove 76. The wheel 1 73 can be located on the inner side of the track, and the limit plate 82 can be located on the outer side of the track. The wheel 1 73 and the limit plate 82 will clamp the top of the L-shaped track to ensure that the wheel 1 73 and the wheel 2 74 can move normally on the straight track section 75 of the track.

[0035] like Figure 5 、 Figure 6 As shown, the connecting rod 84 of the limit plate 82 is slidably connected to the inside of the stepped hole 81, and connecting holes 87 are provided at both ends of the outer cylindrical surface of the front drive shaft 4. The limiting bolt 86 is located inside the connecting hole 87, and the groove length of the limiting groove 85 is adapted to the floating distance of the limit plate 82. The limiting groove 85 can limit the floating distance of the limit plate 82 to avoid the limit plate 82 from detaching from the track due to a large floating amplitude of the limit plate 82, and the limit plate 82 has a tendency to move toward the inside of the front drive shaft 4 under the action of the telescopic spring 88. When the OHT trolley moves along the curved track section 71, the telescopic spring 88 pulls the limit plate 82 inward to ensure that wheel one 73 and wheel two 74 are stable in walking. When one of the limit plates 82 and wheel one 73 is suspended in the air at the same time, the chamfered angle 83 of the limit plate 82 can be used to smoothly send the limit plate 82 into the reserved groove 76.

[0036] like Figure 1 、 Figure 7-Figure 9As shown, the two ends and edge of the front driving seat 3 are provided with a center of gravity adjustment structure 9, and the center of gravity adjustment structure 9 includes a screw 99, which is provided on the edge of the front driving seat 3, and the middle thread of the screw 99 is connected with a counterweight 910, and a guide groove 911 is provided at the edge of the front driving seat 3 and at the counterweight 910. The counterweight 910 is slidably connected with the inside of the guide groove 911. When the screw 99 rotates, it drives the counterweight 910 to move along the inside of the guide groove 911, so that the counterweight 910 can be moved to different positions, so that the counterweight 910 can be placed on different sides of the OHT trolley for counterweighting. Gear three 912 and gear five 914 are respectively provided at the ends, floating holes 92 are provided at both ends of the front drive seat 3, and the interior of the two floating holes 92 are provided with an integrally manufactured fixed shaft 93, a connecting shaft 95, and gear two 94, and gear two 94 is located in the middle position of the fixed shaft 93 and the connecting shaft 95. The fixed shaft 93 can rotate inside the floating hole 92 and move along the axis direction of the floating hole 92. The ends of the two connecting shafts 95 are both equipped with matching plates 96. The outer circumference of the limit plates 82 at both ends of the front drive shaft 4 is provided with matching grooves 97, and the matching grooves 97 are movably connected to the edge of the matching plate 96. The matching grooves 97 are movably connected to the edge of the matching plate 96. The matching plate 96 moves along the axial direction of the front drive shaft 4. When the limit plate 82 moves along the axial direction of the front drive shaft 4, the matching plate 96 moves synchronously with the matching groove 97 of the limit plate 82, so that the floating hole 92 on the matching plate 96 moves along its axial direction. One end of the front drive seat 3 is provided with a gear 4 913 between the gear 3 912 and the gear 2 94. The gear 3 912, the gear 4 913, the gear 2 94 and the gear 1 91 correspond in sequence. The other end of the front drive seat 3 is provided with a gear 6 915 and a gear 7 916 between the gear 5 914 and the gear 2 94. The gear 5 914, the gear 2 Gear six 915, gear seven 916, gear two 94 and gear one 91 correspond to each other in sequence. When the OHT trolley moves on the straight rail section 75, the limit plate 82 is away from the interior of the front drive shaft 4. At this time, the matching plate 96 and gear two 94 are both away from the interior of the front drive shaft 4. The two gear twos 94 cannot engage with gear one 91, and the gear-driven screw 99 cannot be rotated at this time; when one of the wheels one 73 and the limit plate 82 are suspended in the air, the limit plate 82 drives the matching plate 96 and gear two 94 to move toward the interior of the front drive shaft 4, so that gear two 94 engages with gear one 91, and the gear-driven screw 99 can be rotated at this time.

[0037] like Figure 1As shown, when the two limit plates 82 are in contact with the outer edge of the curved track section 71 of the track, the two limit plates 82 are away from the inside of the front drive shaft 4, and the two gears 2 94 are separated from gear 1 91. When the OHT trolley is located in the straight track section 75 of the track, the distance between the two straight track sections 75 is adjusted to slightly increase the distance between the two limit plates 82. At this time, the limit plates 82 and the matching plates 96 are both in a state of being away from the front drive shaft 4. At this time, gear 2 94 is also separated from gear 1 91, so that the rotating front drive shaft 4 cannot transmit power to the two ends of the screw 99, and the screw 99 will not rotate. At this time, there is no need to adjust the position of the counterweight block 910 to ensure that the OHT trolley passes through the straight track section 75 smoothly.

[0038] like Figure 7 As shown, when the wheel 1 73 at the gear 5 914 is separated from the curved track section 71 and the straight track section 75 of the track, the wheel 1 73 and the limit plate 82 at the gear 5 914 are suspended in the middle of the track, and the limit plate 82 near the gear 5 914 moves toward the inner direction of the front drive shaft 4, and the gear 1 91, gear 2 94, gear 7 916, gear 6 915 and gear 5 914 near the gear 5 914 are meshed in sequence, so that the screw 99 can be driven by the gear 5 914, and the rotating screw 99 drives the counterweight 910 to move its position, and the counterweight 910 approaches the position of the gear 3 912, and the overall center of gravity of the OHT trolley body 1 approaches the position of the gear 3 912, so as to avoid the OHT trolley falling from the track due to the larger center of gravity at the suspended gear 5 914.

[0039] like Figure 8 、 Figure 9 As shown, when the wheel 1 73 at the gear three 912 is separated from the curved track section 71 and the straight track section 75 of the track, the wheel 1 73 and the limit plate 82 at the gear three 912 are both suspended in the middle of the track, and the limit plate 82 near the gear three 912 moves toward the inner direction of the front drive shaft 4, and the gear one 91, gear two 94, gear four 913 and gear three 912 near the gear three 912 are meshed in sequence, so that the screw 99 can be driven by the gear three 912, and the rotating screw 99 drives the counterweight block 910 to move its position, and the counterweight block 910 approaches the position of the gear five 914, and the overall center of gravity of the OHT trolley body 1 approaches the position of the gear five 914, so as to avoid the OHT trolley falling from the track due to the larger center of gravity at the suspended gear three 912.

[0040] like Figure 7 、 Figure 8As shown, the surface of the front drive seat 3 and the two ends of the screw 99 are bolted with mounting seats 98, and the mounting seats 98 are rotatably connected to the two ends of the screw 99. One of the gear three 912 or gear five 914 drives the screw 99, so that the counterweight 910 can be rotated along one direction of the screw 99. The screw 99 is composed of a threaded section and a smooth section, and the smooth section is located at both ends of the screw 99. Springs are provided at both ends of the inner part of the guide groove 911. The ends of the springs in the extended state are aligned with the ends of the threaded sections. When the screw 99 moves to the ends of the guide groove 911, the smooth section of the screw 99 is rotatably connected to the top end of the counterweight 910, and the counterweight 910 will stay in the smooth section of the screw 99, and when the counterweight 910 needs to move in the opposite direction, the counterweight 910 will be pushed back to the threaded section of the screw 99 under the action of the spring to ensure that the screw 99 and the counterweight 910 cooperate normally.

[0041] The preferred embodiments of the present invention disclosed above are merely intended to illustrate the present invention. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An aerial transport vehicle device capable of smoothly walking around corners, comprising an OHT vehicle body (1), a rear drive seat (2) and a front drive seat (3), wherein the rear drive seat (2) and the front drive seat (3) are respectively mounted on both sides of the top of the OHT vehicle body (1), a front drive shaft (4) and a rear drive shaft (5) are respectively arranged inside the front drive seat (3) and inside the rear drive seat (2), a connecting seat (6) is arranged at the top of the OHT vehicle body (1) and between the rear drive seat (2) and the front drive seat (3), and the device is characterized in that: Both ends of the front drive shaft (4) and the rear drive shaft (5) are provided with a double wheel structure (7), the double wheel structure (7) includes a track consisting of a curved track section (71) and a straight track section (75), the curved track section (71) and the straight track section (75) are used as tracks for the OHT trolley body (1) to travel, the cross-section of the curved track section (71) and the straight track section (75) are L-shaped, and a pad (72) is installed at the top end of the curved track section (71), and both ends of the front drive shaft (4) and the rear drive shaft (5) are provided with a wheel one (73) and a wheel two (74), each wheel one (73) corresponds to the L-shaped middle position of the curved track section (71) and the straight track section (75), and each wheel two (74) corresponds to the L-shaped top position of the curved track section (71) and the straight track section (75); A height adjustment structure is provided between the curved track section (71) and the pad (72), and the height adjustment structure includes a plurality of gaskets and bolts. The gaskets are provided at both ends of the pad (72), and the bolts pass through the pad (72) and the inside of the gaskets, and the ends of the bolts are fixed to the curved track section (71). The gap between the second wheel (74) and the pad (72) is adjusted by means of gaskets. A track-joining structure (8) is provided at both ends of the front drive shaft (4) and at the position of the second wheel (74). The track-joining structure (8) includes a stepped hole (81). The stepped hole (81) is opened on the end face of the second wheel (74). A limit plate (82) and a connecting rod (84) are provided inside the stepped hole (81). The limit plate (82) and the connecting rod (84) are manufactured as one piece. A limit bolt (86) is provided at each end of the front drive shaft (4). The limit bolt (86) is provided inside the connecting rod (84) and at the position of the limit bolt (86). ) position, a limiting groove (85) is provided, a limiting bolt (86) passes through the limiting groove (85), and the limiting bolt (86) is slidably connected to the inside of the limiting groove (85), a telescopic spring (88) is provided on the outside of the connecting rod (84), the limiting plate (82) floats along the axial direction of the front drive shaft (4), and a circle of chamfered angles (83) are provided on the edge of the limiting plate (82), and the chamfered angles (83) of the limiting plate (82) are in contact with the outer edges of the curved rail section (71) and the straight rail section (75) of the track; A reserved groove (76) is provided at the intersection of the curved rail section (71) and the straight rail section (75), and at the intersection of the tangent of the curved rail section (71) and the straight rail section (75). The depth position of each reserved groove (76) is adapted to the bottom position of the limit plate (82), and the chamfered angle (83) of the limit plate (82) is used to smoothly enter the interior of the reserved groove (76); The connecting rod (84) of the limit plate (82) is slidably connected to the inside of the stepped hole (81), and connecting holes (87) are provided at both ends of the outer cylindrical surface of the front drive shaft (4). The limit bolt (86) is located inside the connecting hole (87), and the groove length of the limit groove (85) is adapted to the floating distance of the limit plate (82). The limit plate (82) has a tendency to move toward the inside of the front drive shaft (4) under the action of the telescopic spring (88).

2. The aerial transport vehicle device capable of smoothly traveling through corners according to claim 1, characterized in that: The front drive seat (3) is provided with a center of gravity adjustment structure (9) at both ends and the edge thereof. The center of gravity adjustment structure (9) includes a lead screw (99), the lead screw (99) is provided at the edge of the front drive seat (3), a counterweight (910) is connected to the middle thread of the lead screw (99), a guide groove (911) is provided at the edge of the front drive seat (3) and at the counterweight (910), the counterweight (910) is connected to the inside of the guide groove (911) in a sliding manner, a gear three (912) and a gear five (914) are provided at both ends of the lead screw (99), a floating hole (92) is provided at both ends of the front drive seat (3), and a fixed shaft (93), a connecting shaft (95), and a gear two (94) manufactured in one piece are provided inside the two floating holes (92), and the gear two (94) is located at the middle position of the fixed shaft (93) and the connecting shaft (95). The ends of the shaft (95) are both equipped with matching plates (96), and the outer circumferential surfaces of the limiting plates (82) at both ends of the front drive shaft (4) are provided with matching grooves (97), and the matching grooves (97) are movably connected to the edges of the matching plates (96). The matching grooves (97) and the matching plates (96) move along the axial direction of the front drive shaft (4). One end of the front drive seat (3) is provided with a gear four (913) located between gear three (912) and gear two (94), and gear three (912), gear four (913), gear two (94) and gear one (91) correspond to each other in sequence. The other end of the front drive seat (3) is provided with a gear six (915) and gear seven (916) located between gear five (914) and gear two (94), and gear five (914), gear six (915), gear seven (916), gear two (94) and gear one (91) correspond to each other in sequence.

3. The aerial transport vehicle device capable of smoothly traveling through corners according to claim 2, characterized in that: When the two limiting plates (82) are in contact with the outer edge of the curved track section (71) of the track, the two limiting plates (82) are away from the interior of the front drive shaft (4), and the two gears 2 (94) are separated from the gear 1 (91).

4. The aerial transport vehicle device capable of smoothly traveling through corners according to claim 3, characterized in that: When the wheel one (73) at the gear five (914) is separated from the curved track section (71) and the straight track section (75) of the track, the limit plate (82) near the gear five (914) moves toward the inner direction of the front drive shaft (4), and the gear one (91), gear two (94), gear seven (916), gear six (915) and gear five (914) near the gear five (914) are meshed in sequence, and the counterweight (910) approaches the position of the gear three (912), and the overall center of gravity of the OHT trolley body (1) approaches the position of the gear three (912).

5. The aerial transport vehicle device capable of smoothly traveling through corners according to claim 3, characterized in that: When the wheel one (73) at the gear three (912) is separated from the curved track section (71) and the straight track section (75) of the track, the limit plate (82) near the gear three (912) moves toward the inner direction of the front drive shaft (4), the gear one (91), the gear two (94), the gear four (913) and the gear three (912) near the gear three (912) are meshed in sequence, the counterweight (910) approaches the position of the gear five (914), and the overall center of gravity of the OHT trolley body (1) approaches the position of the gear five (914).

6. An aerial transport vehicle device capable of smoothly traveling through corners according to any one of claims 3 to 5, characterized in that: The surface of the front drive seat (3) and both ends of the lead screw (99) are bolted with mounting seats (98), and the mounting seats (98) are rotatably connected to both ends of the lead screw (99). The lead screw (99) consists of a threaded section and a smooth section, and the smooth section is located at both ends of the lead screw (99). Both ends of the guide groove (911) are provided with springs, and the ends of the springs in the extended state are aligned with the ends of the threaded section.

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