CN215706778U

CN215706778U - AGV dolly is used in parking area vehicle transfer

Info

Publication number: CN215706778U
Application number: CN202122397727.6U
Authority: CN
Inventors: 蒋强; 刘诚; 万银
Original assignee: Chongqing Haocen Intelligent Technology Research Institute Co ltd
Current assignee: Chongqing Haocen Intelligent Technology Research Institute Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-01
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses an AGV trolley for transferring vehicles in a parking lot, which comprises a trolley body, wherein the trolley body is of a rectangular frame structure formed by connecting four horizontally arranged steel materials end to end, a plurality of cross rods are arranged in the trolley body at intervals along the length direction of the trolley body so as to divide the trolley body into a plurality of rectangular mounting areas with different sizes, the mounting areas at the front end and the rear end of the trolley body are respectively walking steering mechanism mounting areas, a front trolley frame mounting area and a rear trolley frame mounting area are respectively arranged between the two walking steering mechanism mounting areas, and walking steering mechanisms are respectively and fixedly mounted in the two walking steering mechanism mounting areas so as to drive the AGV trolley to run and steer; the front frame mounting area and the rear frame mounting area correspond to each other respectively and are provided with a front frame and a rear frame in a suspension manner, and a movable frame is movably arranged between the rear frame and the rear frame mounting area. The utility model has simple structure, stable running, can realize pivot steering and has better clamping stability for the vehicle tire.

Description

AGV dolly is used in parking area vehicle transfer

Technical Field

The utility model relates to the technical field of AGV trolleys, in particular to an AGV trolley for transferring vehicles in a parking lot.

Background

The AGV trolley is a transport vehicle which is provided with an electromagnetic or optical automatic guiding device and can run along a specified guiding path, comprises a running and stopping device and a safety protection device and has various transfer functions, the AGV trolley can automatically transport a vehicle to a destination from a starting point under the condition that the AGV trolley does not need to be manually driven by self, and people can use the AGV trolley conveniently.

For example, the utility model patent with the publication number of CN110700663A discloses a vehicle parking method based on an AGV, wherein a waiting position for the AGV to wait is arranged at an entrance of a parking lot, the AGV is positioned on the waiting position, the AGV is provided with a front frame and a rear frame, and at least one frame can move back and forth to change the distance between the front frame and the rear frame so as to adapt to the distance between the front wheel and the rear wheel of the vehicle; four groups of clamping arms corresponding to the four wheels are arranged on the AGV trolley, and each group of clamping arms is provided with two clamping arms; two groups of clamping arms corresponding to the two front wheels are positioned on the left side and the right side of the front frame, and two groups of clamping arms corresponding to the two rear wheels are positioned on the left side and the right side of the rear frame; waiting to stop the state, all arm locks draw in the AGV dolly and be in indulging the state of putting, and front and back frame is according to vehicle front and back wheel interval adjustment and is target in place, and two arm locks in each group rotate 90 relative and stretch out and be in horizontal state, and under horizontal state, two arm lock intervals in each group are less than the wheel diameter.

The AGV in this scheme dolly direction of travel is limited, can only realize the fore-and-aft direction and remove. Secondly, when parking the vehicle, need have multilayer steel frame construction's hoisting frame, be equipped with the slide rail that supplies vehicle to transport the platform and remove on the hoisting frame, the AGV dolly will be waited to park on the vehicle transports the platform from waiting the bus position lateral shifting, and the rethread vehicle transports the platform and removes to the corresponding layer parking stall before, and the AGV dolly will be waited to park again at last and remove to the parking stall to accomplish the vehicle and park. And thirdly, the vehicle taking process is just opposite, and in order to ensure that the vehicle head of the vehicle to be taken faces the garage outlet, the direction of the vehicle head needs to be adjusted through a steering wheel. Finally, since the wheels are of various sizes, the clamping arms cannot contact the tire tread during the clamping process of the clamping arms, and a lifting process is required. Therefore, the conventional AGV trolley is complex in movement parking process, single in driving direction, high in cost and capable of being realized through the cooperation of multiple mechanisms. Therefore, the AGV trolley which is simple in structure, stable in running, capable of steering and capable of clamping vehicles and better in stability is particularly important for transferring the vehicles in the parking lot to the AGV trolley.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the technical problems to be solved by the utility model are as follows: how to provide a simple structure, it is steady to go, can turn to in situ, can be to the better parking area vehicle of vehicle tire centre gripping stability transport AGV dolly.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an AGV trolley for transferring vehicles in a parking lot comprises a trolley body, wherein the trolley body is of a rectangular frame structure formed by connecting four horizontally arranged steel materials end to end, a plurality of cross rods are arranged in the trolley body at intervals along the length direction of the trolley body to divide the trolley body into a plurality of rectangular mounting areas with different sizes, the mounting areas at the front end and the rear end of the trolley body are respectively a walking steering mechanism mounting area, a front trolley frame mounting area and a rear trolley frame mounting area are respectively arranged between the two walking steering mechanism mounting areas, and walking steering mechanisms are respectively and fixedly mounted in the two walking steering mechanism mounting areas to drive the AGV trolley to run and steer; the front frame mounting area and the rear frame mounting area correspond to each other respectively and are provided with a front frame and a rear frame in a suspension manner, a movable frame is movably arranged between the rear frame and the rear frame mounting area, the rear frame is arranged on the movable frame in a suspension manner, and the position of the movable frame in the rear frame mounting area is adjusted forwards and backwards through a translation device so as to correspond to vehicles with different wheelbases; lifting mechanisms are respectively arranged between the front frame mounting area and the front frame and between the movable frame and the rear frame, so that the lifting vehicle is suspended from the ground; the front frame is provided with a front clamping device for simultaneously clamping the left and right front wheels of the vehicle, and the rear frame is provided with a rear clamping device for simultaneously clamping the left and right rear wheels of the vehicle.

Furthermore, the front clamping device and the rear clamping device both comprise two clamping arm motors and two horizontal first scroll rods which are arranged at intervals front and back along the width direction of the vehicle body, scroll teeth are arranged at two ends of each first scroll rod, clamping arms which are used for clamping wheels and are in a horizontal plate shape are respectively and correspondingly arranged at two ends of each first scroll rod above the corresponding front vehicle frame or rear vehicle frame, a clamping arm shaft is fixedly arranged at one end of each clamping arm, the clamping arm shaft penetrates through the corresponding front vehicle frame or rear vehicle frame and is rotatably connected with the corresponding front vehicle frame or rear vehicle frame, a first turbine is connected to the lower end key of each clamping arm shaft, and the first turbine is meshed with the scroll teeth; shaft sleeves for the first scroll rods to horizontally penetrate are correspondingly arranged on the inner side wall of the front frame mounting area and the inner side wall of the movable frame respectively, and the first scroll rods are rotatably connected with the shaft sleeves; two arm lock motors are respectively fixedly installed on the corresponding front frame and the corresponding rear frame, output shafts of the two arm lock motors are respectively in driving connection with the corresponding first scroll bars through a bevel gear set, so that the front and rear arm locks corresponding to the front frame and the rear frame are unfolded outwards of the vehicle body, the front and rear arm locks are matched at intervals to clamp the wheel, and the distance between the two arm locks in each group of arm locks is smaller than the wheel diameter of the wheel.

Further, the translation device includes translation motor and the backup pad that sets up along automobile body length direction bilateral symmetry level, and backup pad fixed mounting is in the automobile body below, the spout has been seted up along backup pad length direction at two backup pad upper surfaces, the spout is located the automobile body inboard, one of them backup pad upper surface is gone up and is located spout one side horizontal installation and have first bar tooth, translation motor fixed mounting is on removing the frame, remove and install the gyro wheel with spout matched with on the frame, install the gear with first bar tooth engaged with on translation motor's the output shaft, in order to drive to remove the frame along automobile body length direction back-and-forth movement.

Furthermore, after all the clamping arms are unfolded, a turnover plate which is inclined downwards is arranged towards the surface of the tire to be clamped, and the turnover plate is rotatably connected with the clamping arms; a sensor is arranged on one of the left and right groups of clamping arms of the rear clamping device, which is close to the front frame, a signal trigger block is fixedly arranged on the end surface of the turnover plate, which is close to the sensor, the output of the sensor is connected with a controller, the controller is connected with the translation motor, when the signal trigger block is aligned with the sensor in the turnover process of the turnover plate, the translation of the rear frame is in place, and the controller controls the translation motor to stop working; a return spring is arranged between the back of the turnover plate and the clamping arm, and the lower end of the turnover plate slantly faces downwards to the direction of the wheel to be clamped in a holding mode in a natural state.

Furthermore, the lifting mechanisms on the front frame mounting area and the front frame, and on the moving frame and the rear frame respectively comprise a lifting motor and a transmission shaft horizontally arranged along the length direction of the vehicle body, two ends of the transmission shaft respectively penetrate through the corresponding front frame and the corresponding rear frame and are respectively in rotary connection with the corresponding front frame and the corresponding rear frame, and gears are fixedly mounted at two ends of the transmission shaft; the inner side wall of the front frame mounting area and the inner side wall of the movable frame are respectively provided with a vertically mounted second strip-shaped tooth matched with the gears at the two ends of the corresponding transmission shaft, and the two second strip-shaped teeth are meshed with the gears at the two ends of the transmission shaft; the lifting motor is fixedly arranged on the front frame and the rear frame through a motor support respectively, and an output shaft of the lifting motor is in driving connection with the transmission shaft through a transmission belt or a bevel gear set so as to lift and lower the front frame and the rear frame respectively.

Furthermore, remove a inside wall and preceding frame installation region inside wall bilateral symmetry respectively and vertically install the polylith stopper, rotate respectively on preceding frame and the back frame and install the pulley of laminating mutually with terminal surface about corresponding the stopper.

Furthermore, each two-walking steering mechanism comprises two walking seats and a fixing plate which is horizontally and fixedly installed along the width direction of the vehicle body and is positioned above the vehicle body, scroll rod installation blocks are vertically installed on the lower surface of the fixing plate in a bilateral symmetry mode along the length direction, scroll rod holes are formed in the two scroll rod installation blocks in a one-to-one correspondence mode, second scroll rods are rotatably connected in the scroll rod holes, and scroll teeth are arranged at the left end and the right end of each second scroll rod; the walking seat is of a rectangular shell structure formed by surrounding four vertical plates and a top plate, a walking wheel is rotatably arranged in the walking seat, a walking motor is fixedly arranged in the walking seat, the peripheral surface of the walking wheel is contacted with the ground, and an output shaft of the walking motor is in driving connection with a rotating shaft of the walking wheel through a gear set so as to drive the walking to rotate; a turbine shaft is arranged between each top plate and the fixing plate, one end of each turbine shaft is fixedly connected with the corresponding top plate, the other end of each turbine shaft is rotatably arranged on the fixing plate through a turbine shaft mounting block, a second turbine is fixedly arranged on each turbine shaft, and the second turbine is meshed with the turbine teeth on the second worm rod; and a steering motor is further installed on the fixing plate, and an output shaft of the steering motor is in driving connection with the second scroll bar through a driving belt so as to drive the two walking seats to rotate in the same direction.

Furthermore, damping mechanisms are symmetrically arranged between the vertical plate and the top plate of each walking seat in a left-right mode, so that each walking wheel can be in better contact with the ground.

Compared with the prior art, the utility model has the beneficial effects that:

1. the AGV trolley body is provided with the combined front frame and the combined rear frame, the distance between the rear frame and the front frame is changed by the front and back movement of the rear frame so as to adapt to the wheel base of different vehicles, and compared with a separated type trolley body, the distance control system is not needed to maintain the distance between the separated type trolley bodies; when the rear frame moves back and forth to change the distance between the rear frame and the front frame so as to adapt to different vehicle wheelbases, the front frame lifting mechanism starts to lift, at the moment, the rear wheels of the vehicle are used as lifting fulcrums, and after the front frame is lifted in place, the rear frame is lifted again, so that the reliability is better, and the efficiency is not influenced.

2. Every arm lock rotates and connects the returning face plate, and the returning face plate contacts and produces the rotation with the tire, and increase and tire tread laminating degree realize the better laminating of arm lock and wheel, and the arm lock atress is better.

3. According to the AGV turning device, the AGV trolley is driven and turned into a whole, the turning and walking flexibility is better, the direction can be adjusted in situ, the front of the vehicle head faces the front when the vehicle is taken out of a warehouse, the special arrangement of a rotary turntable is avoided, the vehicle head faces the required direction, and in addition, a set of mechanism needs to be additionally arranged, so that the complexity of the whole structure is increased.

4. The car body is divided into a plurality of mounting areas with different sizes, all parts of the AGV car are mounted in the corresponding mounting areas, the structure is clear, the AGV car is mutually independent and does not interfere with each other, and the AGV car is convenient to mount and maintain.

5. The moving frame is driven to move along the second strip-shaped teeth through the translation motor so as to move the rear frame back and forth, and vehicles with different wheelbases are adjusted to be simple and light.

6. And the four travelling seats are respectively provided with a damping mechanism so as to be capable of coping with the rugged road surface in the travelling process of the AGV trolley and keep the travelling wheels of the AGV trolley to be always contacted with the ground.

Drawings

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1;

fig. 3 is a partial bottom view of fig. 1.

In the figure: the device comprises a vehicle body 1, a front vehicle frame 2, a rear vehicle frame 3, a moving frame 4, a clamping arm motor 5, a first scroll bar 6, a clamping arm 7, a clamping arm shaft 8, a first turbine 9, a turnover plate 10, a sensor 11, a signal trigger block 12, a translation motor 13, a support plate 14, a first strip-shaped tooth 15, a lifting motor 16, a transmission shaft 17, a second strip-shaped tooth 18, a motor support 19, a limiting block 20, a pulley 21, a vertical plate 22, a fixing plate 23, a second scroll bar 24, a top plate 25, a walking wheel 26, a walking motor 27, a second turbine 28, a steering motor 29, a transmission belt 30 and a spring damper 31.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, an AGV cart for transporting vehicles in a parking lot in this embodiment includes a cart body 1, the cart body has a rectangular frame structure formed by four horizontally arranged steel materials connected end to end, and a plurality of cross bars are arranged in the cart body 1 at intervals along the length direction of the cart body to separate the cart body into a plurality of rectangular mounting areas with different sizes, the mounting areas at the front and rear ends of the cart body 1 are both walking steering mechanism mounting areas (for driving the AGV cart to travel and steer), the mounting areas between the two walking steering mechanism mounting areas are front frame mounting areas and rear frame mounting areas (for clamping wheels of vehicles with different axle distances and lifting the vehicles), and the mounting areas between the front frame mounting areas and the rear frame mounting areas are AGV cart battery mounting areas (for providing power source for the AGV cart to travel). The traveling steering mechanisms are fixedly installed in the two traveling steering mechanism installation areas respectively so as to drive the AGV to travel and steer; the front frame 2 and the rear frame 3 are respectively arranged in the front frame mounting area and the rear frame mounting area in a corresponding and suspended mode, the movable mounting frame 4 is movably mounted between the rear frame 3 and the rear frame mounting area, the rear frame is mounted on the movable mounting frame in a suspended mode, the movable mounting frame 4 adjusts the position of the movable mounting frame in the rear frame mounting area through the translation device in a front-back adjusting mode, namely the distance between the rear frame 3 and the front frame 2 is adjusted, and therefore vehicles with different wheelbases can be handled. Lifting mechanisms are respectively arranged between the front frame mounting area and the front frame 2 and between the movable frame 4 and the rear frame 3, so that the lifted vehicle is suspended from the ground; the front frame 2 is provided with a front clamping device for simultaneously clamping the left and right front wheels of the vehicle, and the rear frame 3 is provided with a left and right rear clamping device for simultaneously clamping the left and right rear wheels of the vehicle.

In the scheme, the vehicle body 1 is divided into a plurality of mounting areas with different sizes, and each component of the AGV trolley is mounted in the corresponding mounting area, so that the AGV trolley is clear in structure, independent and non-interfering, and is convenient to mount and maintain. The front frame mounting area and the rear frame mounting area are respectively correspondingly provided with a front frame 2 and a rear frame 3 in a suspension manner, a movable frame 4 is movably mounted between the rear frame 3 and the rear frame mounting area, the rear frame is mounted on the movable frame in a suspension manner, and the position of the movable frame 4 in the rear frame mounting area is adjusted forwards and backwards through a translation device so as to deal with vehicles with different wheelbases; the front wheel and the rear wheel of the vehicle are clamped by the front clamping device and the rear clamping device respectively, and the wheels of the vehicle are lifted by the lifting mechanism to be suspended on the ground; at last through walking with turn to in walking steering mechanism of an organic whole, transport the vehicle to appointed parking stall from waiting for the parking stall, transport the vehicle to getting the parking stall from appointed parking stall again to the realization is to stopping of vehicle, getting the transportation process, simple structure, it is steady to go, but pivot steering can be better to vehicle tire centre gripping stability.

In the present embodiment, since the front clamping device and the rear clamping device have the same structure and are respectively installed on the corresponding front frame and the corresponding rear frame, the front and rear clamping devices are respectively described, specifically, referring to fig. 2 and 3, the front clamping device includes two clamping arm motors 5 and two horizontal first scroll bars 6 arranged at intervals in the front-rear direction of the vehicle body, two ends of the first scroll bars are provided with scroll teeth, two ends of each first scroll bar 6 are respectively provided with a clamping arm 7 which is used for clamping a wheel and is in a horizontal plate shape above the front frame 2, one end of each clamping arm is fixedly installed with a clamping arm shaft 8, the clamping arm shaft 8 penetrates through the front frame 2 (steel material in the length direction) and is rotatably connected with the front frame 2, the lower end of each clamping arm shaft 8 is keyed with a first turbine 9, and the first turbine 9 is engaged with the scroll teeth; the inner side walls of the front frame mounting areas are respectively and correspondingly provided with shaft sleeves for the first scroll bars 6 to horizontally penetrate through, and the first scroll bars 6 are rotatably connected with the shaft sleeves; two arm lock motors 5 are respectively fixedly installed on the front frame 2, output shafts of the two arm lock motors 5 are respectively in driving connection with the corresponding first scroll bars 6 through a bevel gear set, so that the front and rear arm locks on the front frame are expanded outwards to the vehicle body 1, the front and rear arm locks are matched at intervals to clamp the wheel, and the distance between the two arm locks 7 in each group of arm locks is smaller than the wheel diameter of the wheel.

The rear clamping device comprises two clamping arm motors 5 and two horizontal first scroll bars 6 which are arranged at intervals in the front-rear direction of the vehicle body, vortex teeth are arranged at two ends of each first scroll bar 6, clamping arms 7 which are used for clamping wheels and are in a horizontal plate shape are respectively and correspondingly arranged at two ends of each first scroll bar 6 above the rear frame 2, a clamping arm shaft 8 is fixedly arranged at one end of each clamping arm, the clamping arm shaft 8 penetrates through the rear frame 2 (steel in the length direction) and is rotatably connected with the rear frame 2, a first turbine 9 is connected to the lower end of each clamping arm shaft 8 through a key, and the first turbine 9 is meshed with the vortex teeth; shaft sleeves for the first scroll bars 6 to horizontally penetrate are correspondingly arranged on the inner side walls of the movable frames respectively, and the first scroll bars 6 are rotatably connected with the shaft sleeves; two arm lock motors 5 are respectively fixedly installed on the rear frame 2, output shafts of the two arm lock motors 5 are respectively in driving connection with the corresponding first scroll bars 6 through a bevel gear set, so that the front and rear arm locks of the rear frame are expanded outwards to the vehicle body 1, the front and rear arm locks are matched at intervals to clamp wheels, and the distance between the two arm locks 7 in each group of arm locks is smaller than the wheel diameter of the wheels.

Like this, preceding armful of press from both sides device and back armful press from both sides device respectively has two sets of arm lock, every group arm lock contains two arm lock, four group's arm lock altogether to embrace the wheel that will correspond the position and press from both sides, when concrete centre gripping, in preceding frame or the two sets of arm lock of back frame two arm lock be close to the automobile body front end or keep away from the automobile body front end two arm lock of a set of, like this through arm lock motor 5 drive first scroll bar 6 rotate, first scroll bar 6 drives first turbine 9 and rotates, first turbine 9 drives arm shaft 8 and rotates, the arm lock of both sides is the symmetry action under same motor drive, thereby realize embracing the effect of pressing from both sides or embracing simultaneously pressing from both sides to two rear wheels simultaneously to two front wheels simultaneously. Each group of clamping arms 7 is independently controlled by a clamping arm motor 5, so that the outward expansion of the clamping arms in the vehicle lifting process or the driving process is avoided, and the clamping arms are connected by a gear to be more accurately controlled.

In this embodiment, the translation device includes translation motor 13 and the backup pad 14 that sets up along automobile body length direction bilateral symmetry level, and backup pad 14 fixed mounting is in automobile body 1 below, the spout has been seted up along backup pad length direction at two backup pad 14 upper surfaces, the spout is located the automobile body inboard, one of them backup pad 14 upper surface and be located spout one side horizontal mounting have first bar tooth 15, translation motor 13 fixed mounting is on removing frame 4, remove and install the gyro wheel with spout matched with on the frame 4, install the gear with first bar tooth engaged with on translation motor 13's the output shaft, in order to drive and remove frame 4 along the back-and-forth movement of automobile body 1 length direction.

Like this, through the back frame installation region of automobile body in the realization to the back-and-forth movement of back frame to corresponding different wheel base vehicles, comparing in the disconnect-type automobile body, saved and still need adopt the interval that the disconnect-type automobile body was maintained to the distance control system, this scheme utilizes whole AGV dolly automobile body to realize the unity of preceding frame and back frame, adjusts simple structure, and is light.

In the specific embodiment, a downwardly inclined flip plate 10 is arranged towards the side to be clamped with the tire after all the clamp arms in the front clamping device or the rear clamping device are unfolded, the flip plate 10 is rotatably connected with the clamp arms, a sensor 11 is mounted on one of the left and right groups of clamp arms of the rear clamping device, which is close to the front frame, a signal trigger block 12 is fixedly mounted on one end face of the flip plate 10, which is close to the sensor, the output of the sensor is connected with a controller, the controller is connected with a translation motor, when the signal trigger block 12 is aligned with the sensor 11 in the turnover process of the flip plate 10, the translation of the rear frame is in place, the controller controls the translation motor to stop working, a reset spring is arranged between the back of the flip plate and the clamp arms, and the lower end of the flip plate slantly faces downwards to be clamped with the direction of the tire in a natural state.

Therefore, in the rotating process of each clamping arm 7, the turnover plate 10 is contacted with the tire to enable the turnover plate 10 to rotate, and the attaching degree of the turnover plate 10 and the tire tread is increased; when the signal triggering block 12 on the turnover plate is aligned with the sensor in the turnover process along with the turnover plate 10, the translation of the rear frame is in place, the sensor sends the generated electric signal to the controller, and the controller controls the translation motor 13 to stop working so as to accurately clamp the rear wheel. Through reset spring's setting, under natural state, the returning face plate lower extreme slant orientation is all the time waited to embrace and press from both sides the wheel direction to laminate with not unidimensional wheel side.

In this embodiment, since the two lifting mechanisms have the same structure and different installation positions, the lifting mechanisms on the front frame installation region and the front frame, the moving frame and the rear frame are respectively described, and referring to fig. 1, fig. 2 and fig. 3 in particular, the lifting mechanisms on the front frame installation region and the front frame include a lifting motor 16 and a transmission shaft 17 horizontally arranged along the length direction of the vehicle body 1, two ends of the transmission shaft 17 penetrate through the front frame 2 and are rotatably connected with the front frame, and two ends of the transmission shaft are fixedly provided with gears; second bar-shaped teeth 18 (the second bar-shaped teeth are arranged in the same direction or opposite directions, and the tooth lines of the second bar-shaped teeth face the outer side of the vehicle body) are vertically arranged on the inner side wall of the front vehicle frame mounting area and matched with the gears at the two ends of the transmission shaft, and the two second bar-shaped teeth 18 are meshed with the gears at the two ends of the transmission shaft 17; the lifting motor 16 is fixedly arranged on the front frame 2 through a motor support 19, and an output shaft of the lifting motor is in driving connection with the transmission shaft 17 through a transmission belt or a bevel gear set so as to lift and lower the front frame 2.

The lifting mechanisms on the movable frame and the rear frame comprise a lifting motor 16 and a transmission shaft 17 horizontally arranged along the length direction of the vehicle body 1, two ends of the transmission shaft 17 penetrate through the rear frame 2 and are rotatably connected with the rear frame, and gears are fixedly arranged at two ends of the transmission shaft; second bar-shaped teeth 18 (the second bar-shaped teeth are arranged in the same direction or opposite directions, and the tooth lines of the second bar-shaped teeth face the outer side of the vehicle body) are vertically arranged on the inner side wall of the front vehicle frame mounting area and matched with the gears at the two ends of the transmission shaft, and the two second bar-shaped teeth 18 are meshed with the gears at the two ends of the transmission shaft 17; the lifting motor 16 is fixedly arranged on the front frame 2 through a motor support 19, and an output shaft of the lifting motor is in driving connection with the transmission shaft 17 through a transmission belt or a bevel gear set so as to lift and lower the rear frame 2.

In this way, the lifting motor 16 drives the transmission shaft 17 to transmit, so that gears at two ends of the transmission shaft 17 move up and down along the length direction of the second strip-shaped teeth 18, and the lifting and the descending of the front frame 2 and the rear frame 3 are realized; the front frame 2 and the rear frame 3 are lifted or lowered independently through the lifting motor 16, when the rear frame 3 moves back and forth to change the distance between the rear frame 3 and the front frame 2 so as to adapt to different vehicle wheelbases, the lifting mechanism of the front frame 2 starts to lift, at the moment, the rear wheels of the vehicle are used as lifting fulcrums, after the front frame is lifted in place, the rear frame 3 is lifted again, the lifting is not carried out simultaneously, the reliability is better, and the efficiency is not influenced.

Referring to fig. 2, in the specific implementation, in order to ensure that the lifting motor does not displace when ascending and descending, the front frame 2 and the rear frame 3 can be vertically provided with a plurality of limiting blocks 20 along the length direction of the vehicle body 1, which are positioned on two inner side walls of the movable frame 4 and two inner side walls of the front frame mounting area in a bilateral symmetry manner, and the front frame 2 and the rear frame 3 are respectively provided with pulleys 21 which are attached to the left end surface and the right end surface of the corresponding limiting block 20 in a rotating manner.

Therefore, when the front frame 2 and the rear frame 3 ascend and descend through the lifting motor 16, the pulleys move up and down on the left end face and the right end face of the corresponding limiting blocks, and displacement cannot be generated when the front frame and the rear frame ascend and descend.

Referring to fig. 1 and 3, in the present embodiment, each of the two-walking steering mechanisms includes two walking seats and a fixing plate 23 that is horizontally and fixedly mounted along the width direction of the vehicle body 1 and above the vehicle body, scroll rod mounting blocks are vertically and symmetrically mounted on the lower surface of the fixing plate along the length direction, scroll rod holes are correspondingly formed in the two scroll rod mounting blocks, second scroll rods 24 are rotatably connected in the scroll rod holes, and scroll teeth are arranged at the left and right ends of the scroll rods; the walking seat is of a rectangular shell-shaped structure formed by surrounding four vertical plates 22 and a top plate 25, a walking wheel 26 and a walking motor 27 are rotatably mounted in the walking seat, the peripheral surface of the walking wheel is in contact with the ground, and an output shaft of the walking motor 27 is in driving connection with a rotating shaft of the walking wheel 26 through a gear set so as to drive the walking to rotate; a turbine shaft is arranged between each top plate 25 and the fixing plate 23, wherein one end of each turbine shaft is fixedly connected with the corresponding top plate 25, the other end of each turbine shaft is rotatably arranged on the fixing plate 23 through a turbine shaft mounting block, a second turbine 28 is fixedly arranged on each turbine shaft, and the second turbine 28 is meshed with the turbine teeth on the second worm 24; the fixed plate 23 is further provided with a steering motor 29, and an output shaft of the steering motor 29 is in driving connection with the second scroll bar 24 through a transmission belt 30 so as to drive the two traveling seats to rotate in the same direction. The two scroll bar mounting blocks are bearing seats.

Thus, the travelling wheels 26 and the travelling motor 27 are arranged in the travelling seat, and the travelling motor 26 drives the travelling wheels 26 to rotate through the gear set, so that the AGV trolley is driven to move forwards and backwards; the steering motor 29 transmits power to the second worm 24 and the second turbine 28 through the transmission belt 30, and then the second turbine 28 drives the traveling seats to rotate so as to drive the two traveling seats to rotate in the same direction, thereby realizing steering of the AGV.

In specific implementation, in order to make each traveling wheel 26 better contact with the ground and keep the running stability of the AGV during running when dealing with uneven road surfaces, damping mechanisms can be symmetrically arranged between the vertical plate 22 and the top plate 25 of each traveling seat left and right to increase the running stability of the AGV during running. Damping mechanism in this scheme is spring damper 31 to make AGV dolly travel in-process can deal with the vibration and the swing that the road surface of undulation is uneven produced, keep the stationarity of AGV dolly travel in-process.

In this embodiment, the inner wall of the front frame mounting region is horizontally and symmetrically provided with the support rods along the length direction of the vehicle body, so that the front frame 2 is limited to keep a certain distance from the road surface, the energy consumption of the AGV trolley is saved, and the front frame 2 is prevented from being separated from the vehicle body 1.

The process of transferring the vehicle comprises the following steps:

the parking process is as follows: 1) the AGV trolley waits for the vehicle to be parked to enter outside the waiting position, the vehicle to be parked enters the waiting position, the position in front of the vehicle is controlled through the vehicle stopper, after the vehicle is parked in place in the waiting position, the driver leaves, and the vehicle stopper in the waiting position returns to avoid influencing the subsequent operation of the vehicle; 2) the AGV trolley runs to a waiting stop entrance through a walking steering mechanism, and the angle and the running direction of the AGV trolley are adjusted according to sensors on the left side and the right side of the waiting stop entrance to drive into the waiting stop so as to keep the AGV trolley under a vehicle chassis, and the AGV trolley stops running when the front end of the AGV trolley body 1 is contacted with a stop block on the waiting stop; 3) the two groups of clamping arms of the front frame 2 of the AGV trolley are respectively unfolded towards the outer side of the trolley body, two clamping arms in each group are respectively rotated by 90 degrees and extend out of the clamping arms to be in a transverse state, and the distance between the two groups of clamping arms of the front frame is smaller than the diameter of a wheel in the transverse state; 4) the AGV trolley translation device drives the moving frame to move to a set position in the direction of the front frame, the clamp arm, close to the front frame, in each group of clamp arms on the rear frame rotates by 90 degrees and extends out of the rear frame to be in a transverse state, after the clamp arms are in the transverse state, the translation device drives the moving frame to move away from the front frame and close to the rear wheel of the vehicle, when the clamp arm, in the transverse state, of the rear frame is in contact with the rear wheel, the translation device stops moving, the other clamp arm in each group of clamp arms on the rear frame rotates by 90 degrees and extends out of the clamp arm to be in the transverse state, and in the transverse state, the distance between the two groups of clamp arms of the rear frame is smaller than the diameter of the wheel; in the process that the rear frame clamping arm clamps the rear wheel, the front frame lifting mechanism starts to lift the front frame under the driving of the lifting motor, and stops lifting and maintains the front frame at a set height after the front frame is lifted to the set height; after the rear frame clamping arm clamps the rear wheel in place and the front frame is lifted in place, the rear frame lifting mechanism starts to lift the rear frame under the driving of the lifting motor, and stops lifting and maintains the rear frame at a set height after the rear frame is lifted to the set height; 5) the AGV trolley carries the vehicle to be parked to reach the entrance of the parking space, then the angle and the direction of the vehicle entering the parking space are adjusted through the walking steering mechanism according to the sensor on the parking space, and the vehicle stops running when the front end of the vehicle body of the AGV trolley is in contact with the stop blocks on the parking space; the two lifting mechanisms respectively drive the corresponding front frame or the corresponding rear frame to descend so that the wheels of the vehicle to be parked fall to the ground, and all the clamping arms are retracted to a vertical state of waiting for parking; 6) the AGV trolley drives away from the parking space and goes to a designated position, wherein the designated position comprises a waiting position for executing the next parking task, and the parking space with the parked car is used for executing a car taking task or waiting for a task instruction in a waiting area;

the vehicle taking process comprises the following steps:

1) the AGV trolley runs to a parking space entrance of a vehicle to be taken through a walking steering mechanism, and the angle and the running direction are adjusted to drive into the parking space according to sensors on the left side and the right side of the parking space entrance so as to keep the AGV trolley under a vehicle chassis, and the AGV trolley stops running when the front end of the AGV trolley body is in contact with a stop block on the parking space; 2) the two groups of clamping arms of the front frame of the AGV trolley are respectively unfolded towards the outer side of the trolley body, two clamping arms in each group are respectively rotated by 90 degrees and extend out of the clamping arms to be in a transverse state, and the distance between the two groups of clamping arms of the front frame is smaller than the diameter of a wheel in the transverse state; 3) the AGV trolley translation device drives the moving frame to move to a set position in the direction of the front frame, the clamp arm, close to the front frame, in each group of clamp arms on the rear frame rotates by 90 degrees and extends out of the rear frame to be in a transverse state, after the clamp arms are in the transverse state, the translation device drives the moving frame to move away from the front frame and close to the rear wheel of the vehicle, when the clamp arm, in the transverse state, of the rear frame is in contact with the rear wheel, the translation device stops moving, the other clamp arm in each group of clamp arms on the rear frame rotates by 90 degrees and extends out of the clamp arm to be in the transverse state, and in the transverse state, the distance between the two groups of clamp arms of the rear frame is smaller than the diameter of the wheel; in the process that the rear frame clamping arm clamps the rear wheel, the front frame lifting mechanism starts to lift the front frame under the driving of the lifting motor, and stops lifting and maintains the front frame at a set height after the front frame is lifted to the set height; after the rear frame clamping arm clamps the rear wheel in place and the front frame is lifted in place, the rear frame lifting mechanism starts to lift the rear frame under the driving of the lifting motor, and stops lifting and maintains the rear frame at a set height after the rear frame is lifted to the set height;

4) the AGV trolley slowly exits from the parking space through the walking steering mechanism, runs to the entrance of the car taking place, and runs into the car taking place by adjusting the angle and the running direction according to the sensors on the left side and the right side of the entrance of the car taking place, and stops running when the front end of the body of the AGV trolley contacts with the stopper on the car taking place; 5) the two lifting mechanisms of the AGV trolley respectively drive the corresponding front frame or the rear frame to descend so that the wheels of the vehicle to be taken fall to the ground, and all clamping arms are retracted to a longitudinal state of waiting for stopping; 6) the AGV trolley drives away from the parking space and goes to the designated position, and the designated position comprises a waiting parking space for executing the next parking task and a parking space with a parked car for executing the car taking task or waiting for a task instruction in a waiting area.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that, while the utility model has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. An AGV trolley for transferring vehicles in a parking lot comprises a trolley body, wherein the trolley body is of a rectangular frame structure formed by connecting four steel materials which are horizontally arranged end to end, and the AGV trolley is characterized in that a plurality of cross rods are arranged in the trolley body at intervals along the length direction of the trolley body so as to divide the trolley body into a plurality of rectangular mounting areas with different sizes, the mounting areas at the front end and the rear end of the trolley body are respectively a walking steering mechanism mounting area, a front trolley frame mounting area and a rear trolley frame mounting area are respectively arranged between two walking steering mechanism mounting areas, and walking steering mechanisms are respectively and fixedly mounted in the two walking steering mechanism mounting areas so as to drive the AGV trolley to run and steer; the front frame mounting area and the rear frame mounting area correspond to each other respectively and are provided with a front frame and a rear frame in a suspension manner, a movable frame is movably arranged between the rear frame and the rear frame mounting area, the rear frame is arranged on the movable frame in a suspension manner, and the position of the movable frame in the rear frame mounting area is adjusted forwards and backwards through a translation device so as to correspond to vehicles with different wheelbases; lifting mechanisms are respectively arranged between the front frame mounting area and the front frame and between the movable frame and the rear frame, so that the lifting vehicle is suspended from the ground; the front frame is provided with a front clamping device for simultaneously clamping the left and right front wheels of the vehicle, and the rear frame is provided with a rear clamping device for simultaneously clamping the left and right rear wheels of the vehicle.

2. The AGV car for transporting vehicles in parking lots according to claim 1, wherein each of the front clamping device and the rear clamping device comprises two clamping arm motors and two horizontal first scroll bars spaced back and forth along the width direction of the car body, each of the first scroll bars has scroll teeth at two ends thereof, each of the first scroll bars has clamping arms for clamping the wheels and having a horizontal plate shape at two ends thereof above the corresponding front frame or rear frame, each of the clamping arms has a clamping arm shaft fixedly mounted at one end thereof, the clamping arm shaft passes through the corresponding front frame or rear frame and is rotatably connected to the corresponding front frame or rear frame, the lower end of each clamping arm shaft is keyed with a first turbine, and the first turbine is engaged with the scroll teeth; shaft sleeves for the first scroll rods to horizontally penetrate are correspondingly arranged on the inner side wall of the front frame mounting area and the inner side wall of the movable frame respectively, and the first scroll rods are rotatably connected with the shaft sleeves; two arm lock motors are respectively fixedly installed on the corresponding front frame and the corresponding rear frame, output shafts of the two arm lock motors are respectively in driving connection with the corresponding first scroll bars through a bevel gear set, so that the front and rear arm locks corresponding to the front frame and the rear frame are unfolded outwards of the vehicle body, the front and rear arm locks are matched at intervals to clamp the wheel, and the distance between the two arm locks in each group of arm locks is smaller than the wheel diameter of the wheel.

3. The AGV car of claim 2, wherein the translation device comprises a translation motor and support plates horizontally arranged along the length direction of the car body in a bilateral symmetry manner, the support plates are fixedly mounted below the car body, slide grooves are formed in the upper surfaces of the two support plates along the length direction of the support plates, the slide grooves are located on the inner side of the car body, first strip-shaped teeth are horizontally mounted on the upper surface of one of the support plates and located on one side of the slide grooves, the translation motor is fixedly mounted on the movable frame, rollers matched with the slide grooves are mounted on the movable frame, and gears meshed with the first strip-shaped teeth are mounted on an output shaft of the translation motor to drive the movable frame to move back and forth along the length direction of the car body.

4. The AGV car for transporting the vehicle in the parking lot according to claim 3, wherein after all the clamping arms are unfolded, a downward inclined turnover plate is arranged towards the side of the tire to be clamped, and the turnover plate is rotatably connected with the clamping arms; a sensor is arranged on one of the left and right groups of clamping arms of the rear clamping device, which is close to the front frame, a signal trigger block is fixedly arranged on the end surface of the turnover plate, which is close to the sensor, the output of the sensor is connected with a controller, the controller is connected with the translation motor, when the signal trigger block is aligned with the sensor in the turnover process of the turnover plate, the translation of the rear frame is in place, and the controller controls the translation motor to stop working; a return spring is arranged between the back of the turnover plate and the clamping arm, and the lower end of the turnover plate slantly faces downwards to the direction of the wheel to be clamped in a holding mode in a natural state.

5. The AGV trolley for the vehicle transfer of the parking lot according to claim 1, wherein the lifting mechanisms on the front frame mounting region and the front frame, and on the moving frame and the rear frame each comprise a lifting motor and a transmission shaft horizontally arranged along the length direction of the trolley body, two ends of the transmission shaft respectively penetrate through the corresponding front frame and the corresponding rear frame and are respectively rotatably connected with the corresponding front frame and the corresponding rear frame, and gears are fixedly mounted at two ends of the transmission shaft; the inner side wall of the front frame mounting area and the inner side wall of the movable frame are respectively provided with a vertically mounted second strip-shaped tooth matched with the gears at the two ends of the corresponding transmission shaft, and the two second strip-shaped teeth are meshed with the gears at the two ends of the transmission shaft; the lifting motor is fixedly arranged on the front frame and the rear frame through a motor support respectively, and an output shaft of the lifting motor is in driving connection with the transmission shaft through a transmission belt or a bevel gear set so as to lift and lower the front frame and the rear frame respectively.

6. The AGV car of claim 5, wherein the inside walls of the moving frame and the inside walls of the front frame mounting region are respectively and symmetrically vertically provided with a plurality of limiting blocks, and the front frame and the rear frame are respectively and rotatably provided with pulleys attached to the left and right end faces of the corresponding limiting blocks.

7. The AGV trolley for the vehicle transfer of the parking lot according to claim 1, wherein each of the two walking steering mechanisms comprises two walking seats and a fixing plate which is horizontally and fixedly installed along the width direction of the trolley body and above the trolley body, scroll rod installation blocks are vertically installed on the lower surface of the fixing plate in a left-right symmetrical manner along the length direction, scroll rod holes are formed in the two scroll rod installation blocks in a one-to-one correspondence manner, second scroll rods are rotatably connected in the scroll rod holes, and scroll teeth are arranged at the left end and the right end of each second scroll rod; the walking seat is of a rectangular shell structure formed by surrounding four vertical plates and a top plate, a walking wheel is rotatably arranged in the walking seat, a walking motor is fixedly arranged in the walking seat, the peripheral surface of the walking wheel is contacted with the ground, and an output shaft of the walking motor is in driving connection with a rotating shaft of the walking wheel through a gear set so as to drive the walking to rotate; a turbine shaft is arranged between each top plate and the fixing plate, one end of each turbine shaft is fixedly connected with the corresponding top plate, the other end of each turbine shaft is rotatably arranged on the fixing plate through a turbine shaft mounting block, a second turbine is fixedly arranged on each turbine shaft, and the second turbine is meshed with the turbine teeth on the second worm rod; and a steering motor is further installed on the fixing plate, and an output shaft of the steering motor is in driving connection with the second scroll bar through a driving belt so as to drive the two walking seats to rotate in the same direction.

8. The AGV car of claim 7, wherein the vertical plates and the top plate of each traveling base are symmetrically provided with a damping mechanism to make the traveling wheels contact with the ground.