AGV conveying device and AGV for realizing large-load lifting and transfer

Abstract

The application discloses an AGV conveying device and AGV for realizing large-load lifting and moving, relates to the technical field of AGV trolleys, and comprises a shell, a control panel is mounted on the surface of the shell, a lifting structure is arranged on the inner wall of the shell, the lifting structure comprises a mounting plate, the mounting plate is fixedly installed on the inner wall of the shell, four cylindrical blocks are fixedly connected to the lower surface of the mounting plate, a threaded rod is screw-connected in the cylindrical blocks, a top plate is rotatably connected to the upper end of the threaded rod, a transmission wheel is fixedly connected to the circular arc surface of the threaded rod, and a motor is fixedly connected to the lower surface of the mounting plate. The supporting structure is arranged, the contact area of the shell and the ground can be increased by means of the cooperation of the connecting frame, the support and the auxiliary wheel, so that the stability of the AGV trolley is improved, the AGV trolley can load a heavier weight, and on this basis, the extension length of the connecting frame can be adjusted according to the weight of goods, and the passability of the AGV trolley is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of AGV trolley, in particular to an AGV conveying device and AGV for realizing large load lifting and transfer. BACKGROUND

[0002] AGV, which stands for "Automatic Guided Vehicle", is a kind of unmanned vehicle that can move in a predetermined route. In real life, AGV trolley is often used to transport goods in the warehouse, and its structure usually has "loading table type", "piggyback type", "towing type" and other types.

[0003] A Chinese patent with publication number CN108275620B discloses a jacking mechanism of AGV trolley and AGV trolley, which comprises a base, a driving unit and a plurality of screw rod transmission mechanisms are installed on the base, the screw rod transmission mechanism comprises a fixed seat fixed on the base, a screw rod nut mechanism installed on the fixed seat, the screw rod nut mechanism comprises a screw rod arranged in the up-down direction, a nut threadedly connected with the screw rod, the nut is limited on the fixed seat and cannot move up and down relative to the fixed seat, a follow-up pulley is sleeved on the screw rod, the follow-up pulley is fixedly connected with the nut, the upper end of the plurality of screw rods is fixed with a tray, the driving unit comprises a driving pulley, a motor assembly for driving the driving pulley to rotate, and the driving pulley is in transmission connection with the plurality of follow-up pulleys through a synchronous belt.

[0004] For the above and existing related technologies, the inventor believes that the following defects often exist: in actual application, when the goods are placed on the AGV trolley for transfer by stacking, the center of gravity of the AGV trolley is high due to the high stacking of the goods, so when the AGV trolley drives on the slope, the AGV trolley is easy to incline, thereby causing the load weight of the AGV trolley to decrease.

[0005] Therefore, we propose an AGV conveying device and AGV for realizing large load lifting and transfer. SUMMARY

[0006] The present application aims to provide an AGV conveying device and AGV for realizing large load lifting and transfer, to solve the problems raised in the background art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: An AGV conveying device and AGV for realizing large load lifting and moving, comprising a shell, a control panel is mounted on the surface of the shell, a lifting structure is arranged on the inner wall of the shell, the lifting structure comprises a mounting plate, the mounting plate is fixedly installed on the inner wall of the shell, four cylindrical blocks are fixedly connected to the lower surface of the mounting plate, a threaded rod is threadedly connected in the cylindrical block, a top plate is rotatably connected to the upper end of the threaded rod, a transmission wheel is fixedly connected to the arc surface of the threaded rod, a motor is fixedly connected to the lower surface of the mounting plate, a drive wheel is fixedly connected to the output end of the motor, a belt is sleeved on the arc surface of the drive wheel, the belt is sleeved on the arc surface of the transmission wheel, further comprising: support structures arranged on the surface of the top plate respectively, for stabilizing the shell, the support structures comprise four limiting rods slidingly penetrating the top plate, a supporting plate for lifting goods, a connecting frame and a bracket for supporting the shell, an auxiliary wheel, a hose for conveying hydraulic fluid, a gap groove opened on the upper surface of the top plate; tensioning structures arranged on the inner wall of the gap groove respectively, for preventing the hose from sagging as much as possible, the tensioning structures comprise a supporting rod fixedly installed on the inner wall of the gap groove, and a rotating disc for pressing the hose; protection structures arranged on the upper surface of the supporting plate respectively, for shielding and protecting the control panel, the protection structures comprise two fixed blocks fixedly installed on the upper surface of the supporting plate, and a protection plate for shielding the control panel.

[0008] The effects of the above components are as follows: By arranging the support structure, the contact area of the shell and the ground can be increased by cooperating with the connecting frame, the bracket and the auxiliary wheel, thereby improving the stability of the AGV trolley, so that the AGV trolley can load heavier weight, and on this basis, the extension length of the connecting frame can be adjusted according to the weight of the goods, thereby improving the passability of the AGV trolley, by arranging the tensioning structure, the redundant and excessively long hose can be automatically tightened during the movement of the AGV trolley, thereby preventing the hose from being worn out during the movement of the AGV trolley as much as possible, thereby prolonging the service life of the hose, by arranging the protection structure, when goods fall during the loading and unloading of goods, the protection plate can buffer the goods and prevent the goods from directly hitting the control panel as much as possible, thereby protecting the control panel and preventing the control panel from being damaged as much as possible.

[0009] Preferably, the limiting rod is fixedly connected with the supporting plate, the inner wall of the accommodating groove is fixedly connected with a liquid storage box, the lower surface of the supporting plate is fixedly connected with a pressing plate, the pressing plate is slidably connected with the inner wall of the liquid storage box, the liquid storage box is connected with the hose, the side wall of the shell is fixedly connected with two sealing pipes, the sealing pipes are connected with the hose, the inner wall of the sealing pipe is fixedly connected with a multi-stage telescopic pipe, one end of the multi-stage telescopic pipe is fixedly connected with a push plate, both sides of the shell are respectively provided with two rectangular grooves, the inner wall of the rectangular groove is slidably connected with a connecting frame, the support is rotatably connected with the connecting frame, the support is rotatably connected with an auxiliary wheel, the arc surface of the limiting rod is sleeved with a first spring, both ends of the first spring are fixedly connected with the supporting plate and the limiting rod, the surface of the connecting frame is fixedly connected with two second springs, and the second springs are fixedly connected with the shell.

[0010] The above components achieve the effects that: the hydraulic liquid is injected into the liquid storage box, when the supporting plate contacts the goods, the top plate drives the liquid storage box to slide upward, at this time, the hydraulic liquid in the liquid storage box flows into the hose due to extrusion, and the supporting plate stretches the first spring, so that the first spring is in a stretched state, then the hydraulic liquid along the inner wall of the hose flows into the sealing pipe, at this time, the multi-stage telescopic pipe stretches due to the pressure of the hydraulic liquid, and the multi-stage telescopic pipe drives the push plate to move away from the shell, the movement of the push plate extrudes the connecting frame, so that the connecting frame slides along the inner wall of the rectangular groove, and the support moves with the connecting frame to drive the auxiliary wheel to move, so that the auxiliary wheel supports the support and assists in supporting the shell.

[0011] Preferably, the arc surface of the sealing pipe is connected with an adjusting pipe, the lower surface of the adjusting pipe is threadedly connected with a lead screw, the upper end of the lead screw is rotatably connected with an adjusting block, and the adjusting block is slidably connected with the adjusting pipe.

[0012] The above components achieve the effects that: when it is necessary to adjust the lengthening amount of the multi-stage telescopic pipe, the lead screw is rotated, the lead screw drives the adjusting block to slide along the inner wall of the adjusting pipe into the sealing pipe through the threads, and the adjusting block occupies the internal space of the sealing pipe, so that the same volume of hydraulic liquid flowing into the sealing pipe can make the multi-stage telescopic pipe lengthen to a longer length.

[0013] Preferably, the arc surface of the lead screw is rotatably connected with a driven plate, the upper surface of the driven plate is fixedly connected with a scale, the scale is slidably connected with the adjusting pipe, and the surface of the adjusting pipe is fixedly connected with two indicating blocks.

[0014] The above components achieve the effects that: the movement of the driven plate through the lead screw drives the scale to slide along the outer wall of the adjusting pipe, at this time, the indicating blocks achieve the effect of facilitating comparison and observation of the sliding length of the scale, and the scale achieves the effect of facilitating the grasping of the distance of the adjusting block sliding into the sealing pipe.

[0015] Preferably, the surface of the supporting rod is fixedly connected with a rectangular frame, the inner wall of the rectangular frame is slidably connected with a sliding block, one side of the sliding block is fixedly connected with a third spring, the other end of the third spring is fixedly connected with the rectangular frame, the lower surface of the sliding block is rotatably connected with a rotating disc, and the rotating disc is slidably connected with the hose.

[0016] The above-mentioned components achieve the effect that when the top plate moves downward, the hose gradually loosens, the third spring starts to contract, the sliding block is driven to slide by the pulling force of the third spring, the sliding of the sliding block causes the rotating disc to press the hose, so that the loosened hose is tightened again, thereby preventing the hose from being excessively long and falling to the ground as much as possible, and preventing the hose from being worn out during the movement of the AGV trolley, thereby prolonging the service life of the hose.

[0017] Preferably, the inner wall of the rectangular frame is fixedly connected with a positioning rod, and the sliding block is slidably sleeved on the arc surface of the positioning rod.

[0018] The above-mentioned components achieve the effect that the positioning rod prevents the sliding block from sliding off the inner wall of the rectangular frame as much as possible.

[0019] Preferably, the arc surface of the hose is sleeved with a guide pipe, the outer wall of the guide pipe is rotatably connected with a protrusion, the protrusion is fixedly connected with the shell, and the inner wall of the guide pipe is processed by a polishing process.

[0020] The above-mentioned components achieve the effect that during the stretching of the hose, the hose slides along the inner wall of the guide pipe, the guide pipe adjusts the sliding angle of the hose, and also prevents the hose from being worn as much as possible.

[0021] Preferably, the surface of the fixed block is rotatably connected with a rotating shaft, the protective plate is fixedly installed on the arc surface of the rotating shaft, the arc surfaces at both ends of the rotating shaft are sleeved with torsional springs, and the two ends of the torsional springs are fixedly connected with the fixed block and the protective plate respectively.

[0022] The above-mentioned components achieve the effect that when goods fall during the loading and unloading of goods, the goods will first fall onto the surface of the protective plate, the protective plate will be pressed to drive the rotating shaft to rotate along the fixed block and twist the torsional spring, and the torsional spring buffers the protective plate to reduce the impact force of the goods.

[0023] Preferably, the lower surface of the protective plate is fixedly connected with two pressing rods, the surface of the shell is fixedly connected with two circular rings, the circular rings are made of aluminum alloy, the inner wall of the circular ring is snap-fit connected with a buffer block, the buffer block is made of rubber, and the lower end of the pressing rod is provided with a semicircular groove.

[0024] The effect achieved by the above components is as follows: the rotation of the protective plate will drive the pressure rod to rotate, and the pressure rod will squeeze the buffer block. At this time, the rubber buffer block will break due to the compression. The impact of the broken buffer block on the cargo will be used for secondary buffering, thereby reducing the collision force between the protective plate and the outer shell and preventing the control panel from being crushed as much as possible.

[0025] Preferably, an AGV including an AGV conveying device for realizing large-load lifting and transfer includes a chassis, four wheels are mounted on the lower surface of the chassis, and the outer shell is fixedly mounted on the upper surface of the chassis.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. By setting up a support structure, the present invention can increase the contact area between the outer shell and the ground by means of the connecting frame, bracket and auxiliary wheel, thereby improving the stability of the AGV and enabling the AGV to carry a heavier load. On this basis, the extension length of the connecting frame can be adjusted according to the weight of the goods to improve the passability of the AGV.

[0028] 2. By setting a tensioning structure, the present invention can automatically tighten the redundant and excessively long hose during the movement of the AGV, thereby preventing the hose from being worn through during the movement of the AGV and extending the service life of the hose.

[0029] 3. By setting up a protective structure, the present invention can cushion the falling goods during the loading and unloading process and prevent the goods from directly hitting the control panel, thereby protecting the control panel and minimizing the possibility of damage to the control panel. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 In this invention Figure 1 A partial structural diagram on the right;

[0032] Figure 3 This is a schematic diagram of the structure of the mounting plate in this invention;

[0033] Figure 4 This is a partial structural diagram of the pallet in this invention;

[0034] Figure 5 In this invention Figure 1 A schematic diagram of a partial structure;

[0035] Figure 6 In this invention Figure 2 Enlarged view of point A in the middle;

[0036] Figure 7 Local sectional structure schematic view of sealing pipe in structural schematic view in the application;

[0037] Figure 8 Local sectional structure schematic view of sealing pipe in structural schematic view in the application; Figure 3 Enlarged view of B in the middle;

[0038] Figure 9 Local sectional structure schematic view of sealing pipe in structural schematic view in the application;

[0039] Figure 10 Local sectional structure schematic view of sealing pipe in structural schematic view in the application.

[0040] In the figure: 1 - base plate; 2 - control panel; 3 - lifting structure; 31 - mounting plate; 32 - cylindrical block; 33 - threaded rod; 34 - transmission wheel; 35 - motor; 36 - drive wheel; 37 - belt; 38 - top plate; 4 - wheel; 5 - support structure; 501 - limiting rod; 502 - supporting plate; 503 - let go slot; 504 - liquid storage box; 505 - pressing plate; 506 - hose; 507 - sealing pipe; 508 - multi-stage telescopic pipe; 509 - push plate; 510 - rectangular slot; 511 - connecting frame; 512 - support; 513 - auxiliary wheel; 514 - first spring; 515 - second spring; 516 - adjusting pipe; 517 - screw rod; 518 - adjusting block; 519 - driven plate; 520 - scale; 521 - indicating block; 6 - tensioning structure; 61 - supporting rod; 62 - rectangular frame; 63 - sliding block; 64 - rotating disc; 65 - third spring; 66 - protruding block; 67 - guide pipe; 68 - positioning rod; 7 - protection structure; 71 - fixed block; 72 - rotating shaft; 73 - protection plate; 74 - torsional spring; 75 - pressing rod; 76 - circular ring; 77 - buffer block; 78 - semicircular slot; 8 - shell. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0042] Please refer to Figure 1The application provides a technical scheme: an AGV conveying device and AGV for realizing large-load lifting and moving, which comprises a shell 8, a control panel 2 is mounted on the surface of the shell 8, a lifting structure 3 is arranged on the inner wall of the shell 8, the lifting structure 3 comprises a mounting plate 31 which is fixedly installed on the inner wall of the shell 8, four cylindrical blocks 32 are fixedly connected to the lower surface of the mounting plate 31, a threaded rod 33 is threadedly connected in the cylindrical block 32, a top plate 38 is rotatably connected to the upper end of the threaded rod 33, a transmission wheel 34 is fixedly connected to the arc surface of the threaded rod 33, a motor 35 is fixedly connected to the lower surface of the mounting plate 31, a driving wheel 36 is fixedly connected to the output end of the motor 35, a belt 37 is sleeved on the arc surface of the driving wheel 36 and the arc surface of the transmission wheel 34, support structures 5 are arranged on the surface of the top plate 38 and used for the stability of the shell 8, the support structure 5 comprises four limiting rods 501 which are slidably penetrated through the top plate 38, a supporting plate 502 which is used for lifting goods, a connecting frame 511 and a support 512 which are used for supporting the shell 8 and an auxiliary wheel 513, a hose 506 which is used for conveying hydraulic liquid, a gap 503 which is arranged on the upper surface of the top plate 38, tensioning structures 6 which are arranged on the inner wall of the gap 503 and used for preventing the hose 506 from sagging as much as possible, the tensioning structure 6 comprises a supporting rod 61 which is fixedly installed on the inner wall of the gap 503 and a rotating disc 64 which is used for extruding the hose 506, protection structures 7 which are arranged on the upper surface of the supporting plate 502 and used for shielding and protecting the control panel 2, the protection structure 7 comprises two fixed blocks 71 which are fixedly installed on the upper surface of the supporting plate 502 and a protection plate 73 which is used for shielding the control panel 2, by arranging the support structure 5, the contact area of the shell 8 and the ground can be increased by cooperation of the connecting frame 511, the support 512 and the auxiliary wheel 513, so that the stability of the AGV trolley is improved, the AGV trolley can load a heavier weight, on the basis, the extension length of the connecting frame 511 can be adjusted according to the weight of the goods, the passability of the AGV trolley is improved, by arranging the tensioning structure 6, the hose 506 which is too long can be automatically tightened in the process of driving the AGV trolley, so that the hose 506 is prevented from being worn out as much as possible in the process of moving the AGV trolley, and the service life of the hose 506 is prolonged, by arranging the protection structure 7, when the goods fall in the process of loading and unloading the goods, the protection plate 73 can be used for buffering the goods and preventing the goods from directly hitting the control panel 2 as much as possible, so that the control panel 2 is protected and the control panel 2 is prevented from being damaged as much as possible.

[0043] Reference Figures 3-7As shown, specifically, the limiting rod 501 is fixedly connected with the supporting plate 502, the inner wall of the yielding slot 503 is fixedly connected with the liquid storage box 504, the lower surface of the supporting plate 502 is fixedly connected with the pressing plate 505, the pressing plate 505 is slidingly connected with the inner wall of the liquid storage box 504, the liquid storage box 504 is connected with the hose 506, the side wall of the shell 8 is fixedly connected with two sealing pipes 507, the sealing pipe 507 is connected with the hose 506, the inner wall of the sealing pipe 507 is fixedly connected with the multi-stage telescopic pipe 508, one end of the multi-stage telescopic pipe 508 is fixedly connected with the push plate 509, two rectangular grooves 510 are respectively arranged on the two sides of the shell 8, the inner wall of the rectangular groove 510 is slidingly connected with the connecting frame 511, the support 512 is rotatably connected with the connecting frame 511, the support 512 is rotatably connected with the auxiliary wheel 513, the circular surface of the limiting rod 501 is sleeved with the first spring 514, the two ends of the first spring 514 are respectively fixedly connected with the supporting plate 502 and the limiting rod 501, the surface of the connecting frame 511 is fixedly connected with two second springs 515, the second spring 515 is fixedly connected with the shell 8, the hydraulic liquid is injected into the liquid storage box 504, when the supporting plate 502 contacts with the goods, the top plate 38 drives the liquid storage box 504 to slide upwards, at this time, the hydraulic liquid in the liquid storage box 504 flows into the hose 506 due to extrusion, and the supporting plate 502 stretches the first spring 514, so that the first spring 514 is in a stretched state, then the hydraulic liquid along the inner wall of the hose 506 flows into the sealing pipe 507, at this time, the multi-stage telescopic pipe 508 stretches due to the pressure of the hydraulic liquid, the multi-stage telescopic pipe 508 drives the push plate 509 to move away from the shell 8, the movement of the push plate 509 extrudes the connecting frame 511, so that the connecting frame 511 slides along the inner wall of the rectangular groove 510, the support 512 moves by means of the connecting frame 511, so that the auxiliary wheel 513 moves, the auxiliary wheel 513 supports the support 512, and the shell 8 is supported.

[0044] Referring to Figures 3-7As shown, specifically, the arc surface of the sealing tube 507 is communicated with the adjusting tube 516, the lower surface of the adjusting tube 516 is threadedly connected with the lead screw 517, the upper end of the lead screw 517 is rotatably connected with the adjusting block 518, the adjusting block 518 is slidably connected with the adjusting tube 516, when it is needed to adjust the extension amount of the multi-stage telescopic tube 508, the lead screw 517 is rotated, the lead screw 517 will drive the adjusting block 518 to slide along the inner wall of the adjusting tube 516 into the sealing tube 507, the adjusting block 518 will occupy the internal space of the sealing tube 507, so that when the hydraulic fluid of the same volume flows into the sealing tube 507, the multi-stage telescopic tube 508 can be extended to a longer length. The arc surface of the lead screw 517 is rotatably connected with the driven plate 519, the upper surface of the driven plate 519 is fixedly connected with the scale 520, the scale 520 is slidably connected with the adjusting tube 516, the surface of the adjusting tube 516 is fixedly connected with the two indicating blocks 521, the driven plate 519 moves by means of the lead screw 517 to drive the scale 520 to slide along the outer wall of the adjusting tube 516, at this time, the indicating blocks 521 achieve the effect of facilitating the comparison and observation of the sliding length of the scale 520, and the scale 520 achieves the effect of facilitating the grasping of the distance of the adjusting block 518 sliding into the sealing tube 507.

[0045] Referring to Figure 8 and Figure 9 As shown, specifically, the surface of the supporting rod 61 is fixedly connected with the rectangular frame 62, the inner wall of the rectangular frame 62 is slidably connected with the sliding block 63, one side of the sliding block 63 is fixedly connected with the third spring 65, the other end of the third spring 65 is fixedly connected with the rectangular frame 62, the lower surface of the sliding block 63 is rotatably connected with the rotating disc 64, the rotating disc 64 is slidably connected with the hose 506, when the top plate 38 moves downward, the hose 506 will gradually relax, and the third spring 65 begins to contract, the sliding block 63 will drive the sliding block 63 to slide by means of the pulling force of the third spring 65, the sliding of the sliding block 63 will make the rotating disc 64 press the hose 506, so that the relaxed hose 506 is pulled tight again, thereby preventing the hose 506 from being excessively long and falling to the ground as much as possible, so that the hose 506 is not abraded in the process of moving of the AGV trolley, thereby prolonging the service life of the hose 506. The inner wall of the rectangular frame 62 is fixedly connected with the positioning rod 68, the sliding block 63 is sleeved on the arc surface of the positioning rod 68, the positioning rod 68 achieves the effect of preventing the sliding block 63 from sliding off the inner wall of the rectangular frame 62 as much as possible. The arc surface of the hose 506 is sleeved with the guide tube 67, the outer wall of the guide tube 67 is rotatably connected with the protruding block 66, the protruding block 66 is fixedly connected with the shell 8, the inner wall of the guide tube 67 is processed by polishing process, in the process of stretching of the hose 506, the hose 506 will slide along the inner wall of the guide tube 67, the guide tube 67 achieves the effects of adjusting the sliding angle of the hose 506 and preventing the hose 506 from being abraded as much as possible.

[0046] Referring to Figure 2 and Figure 10As shown, specifically, the surface of the fixed block 71 is rotationally connected with a rotating shaft 72, the protection plate 73 is fixedly installed on the arc surface of the rotating shaft 72, the arc surfaces at both ends of the rotating shaft 72 are sleeved with torsion springs 74, and both ends of the torsion spring 74 are fixedly connected with the fixed block 71 and the protection plate 73 respectively. When goods fall during the loading and unloading process, the goods will first fall on the surface of the protection plate 73, the protection plate 73 will be pressed to drive the rotating shaft 72 to rotate along the fixed block 71 and twist the torsion spring 74, the torsion spring 74 reaches the effect of buffering the protection plate 73 to reduce the impact force of the goods, the lower surface of the protection plate 73 is fixedly connected with two pressing rods 75, the surface of the shell 8 is fixedly connected with two circular rings 76, the circular ring 76 is made of aluminum alloy, the inner wall of the circular ring 76 is clamped and connected with a buffer block 77, the buffer block 77 is made of rubber, and the lower end of the pressing rod 75 is provided with a semicircular groove 78. The protection plate 73 rotates to drive the pressing rod 75 to rotate, the pressing rod 75 extrudes the buffer block 77, at this time, the buffer block 77 made of rubber will be broken due to extrusion, the impact on the goods caused by the breaking of the buffer block 77 is buffered again, so as to reduce the impact force between the protection plate 73 and the shell 8, and prevent the control panel 2 from being damaged as much as possible.

[0047] Referring to Figure 1 As shown, specifically, the AGV includes a chassis 1, four wheels 4 are installed on the lower surface of the chassis 1, and a shell 8 is fixedly installed on the upper surface of the chassis 1.

[0048] Working principle: in the process of using the AGV car, load the goods, inject hydraulic liquid into the storage box 504, set the working process of the AGV car by means of the control panel 2, then move the chassis 1 to the bottom of the goods by means of the wheel 4, then start the motor 35, the output end of the motor 35 rotates and drives the drive wheel 36 to rotate, at this time the belt 37 drives the transmission wheel 34 to rotate by means of the drive wheel 36, the transmission wheel 34 rotates and drives the threaded rod 33 to rotate in the cylindrical block 32, the threaded rod 33 moves upward by means of the screw, the threaded rod 33 moves and drives the top plate 38 to move, the limiting rod 501 moves and drives the supporting plate 502 to move by means of the top plate 38, when the supporting plate 502 contacts with the goods, the top plate 38 drives the storage box 504 to slide upward, at this time the hydraulic liquid in the storage box 504 flows into the hose 506 due to extrusion, and the supporting plate 502 stretches the first spring 514, so that the first spring 514 is in the stretched state, then the hydraulic liquid flows into the sealing tube 507 along the inner wall of the hose 506, at this time the multi-stage telescopic tube 508 stretches due to the pressure of the hydraulic liquid, the multi-stage telescopic tube 508 drives the push plate 509 to move away from the shell 8, the push plate 509 moves and extrudes the connecting frame 511, so that the connecting frame 511 slides along the inner wall of the rectangular groove 510, the support 512 moves and drives the auxiliary wheel 513 to move by means of the connecting frame 511, the auxiliary wheel 513 supports the support 512 and assists in supporting the shell 8, the connecting frame 511 moves and stretches the second spring 515, as the supporting plate 502 moves upward continuously, the elongation of the multi-stage telescopic tube 508 gradually increases, and the length of the connecting frame 511 sliding out of the rectangular groove 510 becomes longer, so that the contact area of the shell 8 with the ground can be adjusted according to the weight of the goods, so as to prevent the connecting frame 511 from stretching too much from the rectangular groove 510 when the goods are light, which may cause the passability of the AGV car to decrease, when it is necessary to adjust the elongation of the multi-stage telescopic tube 508, rotate the lead screw 517, the lead screw 517 drives the adjusting block 518 to slide along the inner wall of the adjusting tube 516 into the sealing tube 507 by means of the screw, the adjusting block 518 occupies the internal space of the sealing tube 507, so that the same volume of hydraulic liquid flowing into the sealing tube 507 can make the multi-stage telescopic tube 508 stretch longer, the driven plate 519 moves and drives the scale 520 to slide along the outer wall of the adjusting tube 516 by means of the lead screw 517, at this time the indicating block 521 facilitates the comparison and observation of the sliding length of the scale 520, and the scale 520 facilitates the grasping of the sliding distance of the adjusting block 518 into the sealing tube 507.

[0049] In the process of moving upward of the supporting plate 502, the hose 506 will be gradually stretched, at this time the hose 506 will extrude the three rotating discs 64, so that the three rotating discs 64 move in the horizontal direction, the rotating disc 64 moves to drive the sliding block 63 to slide along the circular arc surface of the positioning rod 68 and the inner wall of the rectangular frame 62, the rectangular frame 62 achieves the effect of limiting the sliding path of the sliding block 63, and the positioning rod 68 achieves the effect of preventing the sliding block 63 from sliding off the inner wall of the rectangular frame 62 as much as possible, the sliding block 63 slides to extrude the third spring 65, at this time the third spring 65 is in the extruded state, in the process of stretching the hose 506, the hose 506 will slide along the inner wall of the guide pipe 67, the guide pipe 67 achieves the effect of adjusting the sliding angle of the hose 506, and also can prevent the hose 506 from being worn as much as possible, in the process of sliding of the hose 506, the rotating disc 64 will slide due to extrusion, therefore the angle of the hose 506 sliding into the guide pipe 67 will change constantly, since the guide pipe 67 is rotationally connected between the protruding block 66, therefore the guide pipe 67 can rotate synchronously with the hose 506, so as to prevent the position of the guide pipe 67 from being fixed as much as possible, so that the hose 506 is deformed under pressure, and the situation that the normal flow of hydraulic fluid is affected occurs.

[0050] After the goods are lifted, the goods are transported to the designated position, when the goods are unloaded, the first spring 514 will continue to contract, the limiting rod 501 will slide upward by means of the pulling force of the first spring 514, the limiting rod 501 slides to make the supporting plate 502 slide synchronously, the supporting plate 502 slides to drive the pressing plate 505 to slide along the inner wall of the liquid storage box 504, at this time a negative pressure will be formed in the liquid storage box 504, the hydraulic fluid in the sealing pipe 507 will flow back into the liquid storage box 504 through the hose 506, and the second spring 515 starts to contract, the connecting frame 511 will extrude the push plate 509 by means of the pulling force of the second spring 515, the push plate 509 slides to extrude the multi-stage telescopic pipe 508, so that the multi-stage telescopic pipe 508 contracts, then the output end of the control motor 35 rotates in the opposite direction, the top plate 38 moves downward, at this time the hose 506 will gradually relax, and the third spring 65 starts to contract, the sliding block 63 will drive the sliding block 63 to slide by means of the pulling force of the third spring 65, the sliding block 63 slides to make the rotating disc 64 extrude the hose 506, so that the relaxed hose 506 is pulled tight again, thereby preventing the hose 506 from being too long and falling to the ground, so that the hose 506 is worn in the process of moving of the AGV trolley, thereby prolonging the service life of the hose 506.

[0051] When the goods fall during the loading and unloading process, the goods will first fall to the surface of the protective plate 73, and the protective plate 73 will be pressed to drive the rotating shaft 72 to rotate in the fixed block 71 and twist the torsional spring 74, and the torsional spring 74 reaches the effect of buffering the protective plate 73 to reduce the impact intensity of the goods, and the rotation of the protective plate 73 drives the pressing rod 75 to rotate, and the pressing rod 75 will extrude the buffer block 77, at this time the buffer block 77 made of rubber material will be broken due to extrusion, and the impact on the goods caused by the breakage of the buffer block 77 is buffered again, thereby reducing the impact intensity between the protective plate 73 and the shell 8, forming secondary protection for the control panel 2, and preventing the control panel 2 from being crushed as much as possible, thereby further facilitating the transportation of the goods, and at the same time, since the lower end of the pressing rod 75 is provided with a semicircular groove 78, the contact area between the pressing rod 75 and the buffer block 77 can be increased, thereby increasing the resistance of the pressing rod 75 inserted into the buffer block 77, and further improving the buffering effect of the buffer block 77, and when the buffer block 77 is damaged, the buffer block 77 can be taken out from the ring 76 for replacement and reuse.

[0052] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0053] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An AGV conveying device for realizing large load lifting and transfer, comprising a shell (8), characterized in that: The surface of the shell (8) is provided with a control panel (2), the inner wall of the shell (8) is provided with a lifting structure (3), the lifting structure (3) comprises a mounting plate (31) fixedly installed on the inner wall of the shell (8), the lower surface of the mounting plate (31) is fixedly connected with four cylindrical blocks (32), the cylindrical blocks (32) are threadedly connected with threaded rods (33), the upper end of the threaded rods (33) is rotatably connected with a top plate (38), the arc surface of the threaded rods (33) is fixedly connected with transmission wheels (34), the lower surface of the mounting plate (31) is fixedly connected with a motor (35), the output end of the motor (35) is fixedly connected with a drive wheel (36), the arc surface of the drive wheel (36) is sleeved with a belt (37), the belt (37) is sleeved on the arc surface of the transmission wheel (34), and the top plate (38) is provided with a support structure (5) for the stability of the shell (8), the support structure (5) comprises four limiting rods (501) slidingly penetrating the top plate (38), a supporting plate (502) for lifting goods, a connecting frame (511) and a support (512) for supporting the shell (8) and an auxiliary wheel (513), a hose (506) for conveying hydraulic liquid, a gap (503) formed in the upper surface of the top plate (38), the limiting rods (501) are fixedly connected with the supporting plate (502), the inner wall of the gap (503) is fixedly connected with a liquid storage box (504), the lower surface of the supporting plate (502) is fixedly connected with a pressing plate (505), the pressing plate (505) is slidingly connected with the inner wall of the liquid storage box (504), the liquid storage box (504) is in communication with the hose (506), the side wall of the shell (8) is fixedly connected with two sealing pipes (507), the sealing pipes (507) are in communication with the hose (506), the inner wall of the sealing pipes (507) is fixedly connected with multi-stage telescopic pipes (508), one end of the multi-stage telescopic pipes (508) is fixedly connected with a push plate (509) capable of extruding the connecting frame (511), two rectangular grooves (510) are formed in the two sides of the shell (8), the inner wall of the rectangular grooves (510) is slidingly connected with the connecting frame (511), the support (512) is rotatably connected with the connecting frame (511), the support (512) is rotatably connected with the auxiliary wheel (513), the arc surface of the limiting rod (501) is sleeved with a first spring (514), the two ends of the first spring (514) are fixedly connected with the supporting plate (502) and the limiting rod (501), the surface of the connecting frame (511) is fixedly connected with two second springs (515), and the second springs (515) are fixedly connected with the shell (8). ​ Tensioning structure (6) arranged on the inner wall of the slot (503) respectively, for preventing the hose (506) from sagging, the tensioning structure (6) comprises a support rod (61) fixedly installed on the inner wall of the slot (503), and a rotating disc (64) for pressing the hose (506); The protective structure (7) is arranged on the upper surface of the supporting plate (502) respectively, for shielding and protecting the control panel (2), the protective structure (7) comprises two fixed blocks (71) fixedly installed on the upper surface of the supporting plate (502), and a protective plate (73) for shielding the control panel (2).

2. The AGV conveying device for realizing large load lifting and transferring according to claim 1, characterized in that: The arc surface of the sealing pipe (507) is communicated with an adjusting pipe (516), the lower surface of the adjusting pipe (516) is threadedly connected with a lead screw (517), the upper end of the lead screw (517) is rotatably connected with an adjusting block (518), and the adjusting block (518) is slidably connected with the adjusting pipe (516).

3. The AGV conveying device for realizing large load lifting and transferring according to claim 2, characterized in that: The arc surface of the lead screw (517) is rotatably connected with a driven plate (519), the upper surface of the driven plate (519) is fixedly connected with a scale (520), the scale (520) is slidably connected with the adjusting pipe (516), and the surface of the adjusting pipe (516) is fixedly connected with two indicating blocks (521).

4. The AGV conveying device for realizing large load lifting and transferring according to claim 1, characterized in that: The surface of the support rod (61) is fixedly connected with a rectangular frame (62), the inner wall of the rectangular frame (62) is slidably connected with a sliding block (63), one side of the sliding block (63) is fixedly connected with a third spring (65), the other end of the third spring (65) is fixedly connected with the rectangular frame (62), and the lower surface of the sliding block (63) is rotatably connected with the rotating disc (64), and the rotating disc (64) is slidably connected with the hose (506).

5. The AGV conveying device for realizing large load lifting and transferring according to claim 4, characterized in that: The inner wall of the rectangular frame (62) is fixedly connected with a positioning rod (68), and the sliding block (63) is slidably sleeved on the arc surface of the positioning rod (68).

6. The AGV conveying device for realizing large load lifting and transferring according to claim 4, characterized in that: The arc surface of the hose (506) is sleeved with a guide pipe (67), the outer wall of the guide pipe (67) is rotatably connected with a protruding block (66), the protruding block (66) is fixedly connected with the shell (8), and the inner wall of the guide pipe (67) is processed through a polishing process.

7. The AGV conveying device for realizing large load lifting and transferring according to claim 1, characterized in that: The surface of the fixed block (71) is rotatably connected with a rotating shaft (72), the protective plate (73) is fixedly installed on the arc surface of the rotating shaft (72), the arc surfaces at both ends of the rotating shaft (72) are sleeved with torsional springs (74), and the two ends of the torsional springs (74) are fixedly connected with the fixed block (71) and the protective plate (73) respectively.

8. The AGV conveying device for realizing large load lifting and transferring according to claim 7, characterized in that: The lower surface of the protective plate (73) is fixedly connected with two pressing rods (75), the surface of the shell (8) is fixedly connected with two circular rings (76), the circular rings (76) are made of aluminum alloy, the inner wall of the circular ring (76) is clampedly connected with a buffer block (77), the buffer block (77) is made of rubber, and the lower end of the pressing rod (75) is provided with a semicircular groove (78).

9. An AGV comprising the AGV transport device of any one of claims 1-8 for realizing large load lifting and transfer, comprising a chassis (1), characterized in that: The lower surface of the chassis (1) is provided with four wheels (4), and the shell (8) is fixedly installed on the upper surface of the chassis (1).

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