Wheel lifting device and car transporter

Abstract

The present invention provides a wheel lifting device, comprising a walking chassis and a clamping mechanism arranged on the walking chassis, wherein the walking chassis is provided with a lifting mechanism driving the clamping mechanism to move in a vertical direction; the walking chassis can move in the longitudinal direction of the vehicle body; the clamping mechanism cooperates with the wheel clamp; the lifting mechanism comprises lifting slopes arranged at both ends of the clamping mechanism in the longitudinal direction, the two lifting slopes are arranged facing each other, and lifting wheels cooperating with the lifting slope surface are respectively fixed at both ends of the clamping mechanism in the longitudinal direction, and the two lifting slopes can move synchronously relative to each other. The advantages of the present invention are: the lifting of the clamping mechanism is achieved through the cooperation of the lifting slope and the lifting wheel, and the vertical movement is converted into the horizontal movement of the lifting slope, the structure required in the vertical direction is greatly simplified, the height of the lifting device is effectively reduced, and the construction cost of the stereo garage is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile transporters, and in particular to a wheel lifting device and an automobile transporter. Background Art

[0002] With the increase in the number of cars, the problem of parking difficulty has become more prominent, and multi-story parking garages have come into being. In intelligent multi-story parking garages, car transporters are introduced to assist parking, so that the car transporters can automatically store and retrieve vehicles. After the vehicle is parked, the car transporter enters the bottom of the vehicle body longitudinally or laterally, and then lifts the wheels or chassis. For example, a nut-screw car transporter disclosed in the invention patent with publication number CN110282575B, most of the transporters in the prior art rely on cylinders or screw nuts to lift the vehicle. Both the cylinder and the screw nut are output along a straight line, resulting in a relatively high overall height of the transporter. Therefore, the parking spaces in the multi-story parking garages that can be automatically stored and retrieved in the prior art all have a sinking channel for the car transporter to walk on, so as to prevent the car transporter from interfering with the vehicle chassis. Therefore, the technology for automatically storing and retrieving vehicles cannot be directly applied to existing parking lots.

[0003] In addition, in order to reduce the width and thickness of the transporter, the transporter is generally not equipped with a power supply and control system, and is connected to an external fixed power supply and control system through wires. This results in a low degree of freedom of the transporter, making it difficult to move to any position in the entire garage. In general, multi-story parking garages use multiple transporters to transfer and hand over vehicles within their respective operating ranges to complete the storage and retrieval of vehicles. The transportation efficiency is low, and multiple lifting and lowering of vehicles increases the risk of damage. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an ultra-thin automobile wheel lifting device and an automobile carrier which can enter and exit a vehicle chassis on a flat road.

[0005] The present invention solves the above technical problems through the following technical solutions: a wheel lifting device, comprising a traveling chassis and a clamping mechanism arranged on the traveling chassis, wherein the traveling chassis is provided with a lifting mechanism for driving the clamping mechanism to move in a vertical direction; the traveling chassis can move in the longitudinal direction of the vehicle body; the clamping mechanism cooperates with the wheel clamp;

[0006] The lifting mechanism includes lifting slopes disposed at both ends of the clamping mechanism along the longitudinal direction, the two lifting slopes are arranged facing each other, and lifting wheels matching the surfaces of the lifting slopes are fixed at both ends of the clamping mechanism along the longitudinal direction, and the two lifting slopes can move synchronously relative to each other.

[0007] The present invention enables the lifting wheels to slide and rise on the lifting slope through the relative movement of the lifting slope, thereby realizing the lifting of the clamping mechanism, thereby converting the vertical movement into the horizontal movement of the lifting slope. The structure required in the vertical direction is greatly simplified, and the height of the lifting device is effectively reduced. The total height of the lifting device provided in this embodiment is only 150 mm, which can enter the bottom of a common family car on flat ground, facilitate the lifting of the car, and reduce the construction cost of the three-dimensional car park.

[0008] Preferably, the walking chassis includes two first fixed columns arranged in parallel, both ends of the first fixed columns are connected and fixed by second fixed columns respectively, and a walking wheel is fixed on both sides of the end face of each second fixed column respectively, and the axial direction of the walking wheel is parallel to the axial direction of the second fixed column.

[0009] Preferably, a protective cover is provided on the outer side of the walking wheel, and the protective cover surrounds the two axial sides of the walking wheel and a side away from the second fixed column; an anti-collision wheel located on the axial outside of the walking wheel is fixed on the protective cover, and the axial direction of the anti-collision wheel is along the vertical direction, and the wheel surface of the anti-collision wheel exceeds the outer side surface of the first fixed column.

[0010] Preferably, the walking chassis is also provided with a driving mechanism fixed on any second fixed column, the driving mechanism includes a bearing seat and a fixed seat fixed on both sides of the outer end surface of the second fixed column, the bearing seat and the fixed seat are located between the walking wheels on both sides, a bearing and a walking motor axially parallel to the bearing are fixed on the fixed seat, the driving mechanism also includes a transmission rod passing through the bearing seat and the bearing, a first gear is fixedly provided on the output end of the walking motor, a second gear meshing with the first gear is fixed on the transmission rod, a third gear is also fixed at both ends of the transmission rod, a fourth gear is fixed on the wheel axle of the walking wheel, the fourth gear and the walking wheel are respectively located on both sides of the protective cover, and the third gear meshes with the fourth gear.

[0011] Preferably, the lifting mechanism includes a lifting screw and a lifting motor cooperating with the lifting screw, the lifting ramps at both ends are respectively threadedly matched with the two ends of the lifting screw, the external threads at both ends of the lifting screw are in opposite directions, and the lifting motor is arranged in the horizontal direction to drive the lifting screw to rotate.

[0012] Preferably, the walking chassis also includes two fixed plates parallel to each other, the fixed plates are connected to the first fixed columns on both sides and are located between the two second fixed columns, the lifting mechanism also includes a lifting track fixed on the fixed plates, the lifting slope is slidably matched with the lifting track, and the lifting track is perpendicular to the length direction of the fixed plates.

[0013] Preferably, the lifting screw rod is passed through and fixed on the fixing plate and is freely rotatably matched with the fixing plate, and one end of the lifting screw rod is matched with the lifting motor through a worm gear structure.

[0014] Preferably, the lifting slope includes two sliders, the side of the slider facing the clamping mechanism is an inclined surface, and two lifting rails that are respectively slidably matched with the sliders are fixed on the fixed plate. The two ends of the lifting screw rod are respectively screwed with a nut seat, and the two sides of the nut seat are respectively fixedly connected to the two sliders.

[0015] Preferably, two clamping arms are arranged on each side of the clamping mechanism, and the four clamping arms can pass through the bottom of the vehicle body parallel to the longitudinal direction of the vehicle body. The two clamping arms in front of the wheel can switch between the retracted state and the open state synchronously, and the two clamping arms at the rear can also switch the state synchronously. The retracted state is that the axis of the clamping arm is parallel to the longitudinal direction of the vehicle body, and the open state is that the axis of the clamping arm is parallel to the axis of the wheel.

[0016] Preferably, the clamping mechanism is a rectangular frame structure, including clamping arm plates on both sides and lifting plates at both ends, the lifting wheels are fixed to the side of the lifting plate facing the lifting slope, and each clamping arm plate is provided with a clamping arm near both ends, and a lifting wheel is overlapped on the inclined surfaces of the two sliders, respectively. The two lifting wheels are coaxially fixed, and the fixed axis of the lifting wheel is cantilevered and fixed outwardly relative to the lifting plate.

[0017] Preferably, the clamp arm is hinged and fixed on the clamp arm plate, and the hinge axis of the clamp arm is in the vertical direction; a clamp arm turbine is fixed on the hinge axis of the clamp arm, and each clamp arm turbine is correspondingly provided with a clamp arm worm, and the clamp arm worms are respectively fixed to the clamp arm plates on both sides along the longitudinal direction of the vehicle body, and the two clamp arm worms at the front end and the two clamp arm worms at the rear end are respectively connected by chains, and the clamp arm plates on both sides are respectively provided with a clamp arm motor for driving the front end and the rear end clamp arm worm to rotate, and when the clamp arm motor rotates, the two clamp arms on both sides shrink or open synchronously.

[0018] Preferably, both ends of the clamp arm worm are respectively fixed on a clamp arm bearing seat, a sprocket is respectively fixed to one end of the clamp arm worm facing the lifting plate, and the sprockets of the two clamp arm worms at the same end are connected by the chain.

[0019] Preferably, the clamp arm includes a base and a movable plate, the side of the base facing the wheel is an inclined surface, the end of the movable plate away from the wheel is hinged to the base by a torsion spring, the shape of the movable plate is roughly the same as the shape of the base, when the torsion spring is in a natural state, there is a gap between the movable plate and the surface of the base, and when the movable plate contacts the surface of the base, the clamp arm motor stops working.

[0020] Preferably, at least one guide plate is further provided on one side of the fixed plate facing the lifting plate, the guide plate is fixed in the vertical direction, a guide roller is fixed on both sides of the guide plate, and the guide roller is a cylindrical structure;

[0021] Two rows of guide wheels are fixed on one side of the lifting plate facing the fixed plate, the wheel surface of the guide wheel is a concave surface matched with the guide roller, and the two rows of guide wheels are matched with the two guide rollers respectively.

[0022] Preferably, an electrical system is housed in the middle of the rectangular frame of the clamping mechanism, and the electrical system integrates a power supply and a control unit for controlling the operation of the lifting device.

[0023] The invention also provides a car carrier, comprising two lifting devices which are softly connected along the longitudinal direction.

[0024] Preferably, a connecting rod is fixed to the end of the walking chassis of the lifting device along the longitudinal direction of the vehicle body, the connecting rods of the front and rear lifting devices are staggered in the horizontal direction, and the two connecting rods are fixedly connected to the two ends of a flexible wire respectively.

[0025] Preferably, the flexible wire is a U-shaped structure with both ends facing the same direction, and the two ends of the flexible wire can change the extension length relative to the bottom of the U-shape.

[0026] The wheel lifting device and the car carrier provided by the present invention have the advantages that the lifting wheel slides and rises on the lifting slope through the relative movement of the lifting slope, thereby realizing the lifting of the clamping mechanism, thereby converting the vertical movement into the horizontal movement of the lifting slope, greatly simplifying the structure required in the vertical direction, and effectively reducing the height of the lifting device. The total height of the lifting device provided by the present embodiment is only 150 mm, and it can enter the bottom of a common family car on flat ground, which is convenient for lifting the car and reducing the construction cost of the stereo garage.

[0027] The movement of the lifting device is guided and protected by anti-collision wheels;

[0028] The lifting mechanism converts the horizontal rotation of the lifting motor into the horizontal rotation of the lifting screw through the worm gear structure, and then converts it into the horizontal axial movement of the nut seat through the screw nut structure. The height adjustment is achieved by the cooperation of the lifting ramp and the lifting wheel. The self-locking function of the screw nut and the worm gear structure is used to prevent the clamping mechanism from automatically falling.

[0029] The clamping arm rotates to clamp the front and rear surfaces of the wheel, and the position of the clamping arm is fixed by the worm gear structure to ensure the safety of the lifting movement; the automatic stop of the clamping arm motor movement is achieved through the matching relationship between the movable plate and the base, which is convenient for control;

[0030] The vertical movement of the clamping mechanism is guided by the cooperation of the guide roller and the guide wheel. The clamping action of the guide wheel provides the clamping mechanism with an anti-overturning force, so that the lifting device is kept stable when the vehicle is lifted.

[0031] The two lifting devices on the car transporter can be controlled independently, are suitable for vehicles with different wheelbases, are easy to control and use, and ensure stable communication at different distances through soft connections, making integrated control convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a wheel lifting device provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of a lifting mechanism of a wheel lifting device provided in an embodiment of the present invention;

[0034] Figure 3 for Figure 1 A magnified view of part A;

[0035] Figure 4 A schematic diagram of a clamping mechanism of a wheel lifting device provided in an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of a clamping arm of a wheel lifting device provided in an embodiment of the present invention;

[0037] Figure 6 A schematic diagram of a guide roller and a guide wheel of a wheel lifting device provided in an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of a car carrier provided by an embodiment of the present invention;

[0039] Figure 8 A schematic diagram of the coordination of the flexible wire and the connecting rod of the car transporter provided by the embodiment of the present invention in different states. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the technical solution of the present invention is clearly and completely described below in combination with specific embodiments and with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1As shown, this embodiment provides a wheel lifting device, including a walking chassis 1 and a clamping mechanism 2 arranged on the walking chassis 1, the walking chassis 1 is provided with a lifting mechanism 3 for driving the clamping mechanism 2 to move in a vertical direction; the walking chassis 1 can move along the longitudinal direction of the vehicle body; the clamping mechanism 2 cooperates with the wheel clamp; the lifting mechanism 3 includes lifting slopes 31 arranged at both ends of the clamping mechanism 2 along the longitudinal direction, the two lifting slopes 31 are arranged opposite to each other, and the two ends of the clamping mechanism 2 along the longitudinal direction are respectively fixed with lifting wheels 21 that cooperate with the surfaces of the lifting slopes 31, and the two lifting slopes 31 can move synchronously relative to each other.

[0042] In this embodiment, the lifting wheel 21 slides and rises on the lifting slope 31 through the relative movement of the lifting slope 31, thereby realizing the lifting of the clamping mechanism 2, thereby converting the horizontal movement into the vertical movement of the lifting slope 31. The structure required in the vertical direction is greatly simplified, and the height of the lifting device is effectively reduced. The total height of the lifting device provided in this embodiment is only 150 mm, which can enter the bottom of a common family car on flat ground, facilitate the lifting of the car, and reduce the construction cost of the three-dimensional garage.

[0043] Although the lifting device provided in this embodiment can only provide lifting and supporting functions for the front or rear wheels, it is sufficient to realize automatic storage of the vehicle. Specifically, for front-wheel drive or rear-wheel drive vehicles, when the vehicle is normally parked on the ground, the lifting device moves longitudinally to the bottom of its driving wheels. After lifting the driving wheels, the lifting device can drag the vehicle on the ground, and the non-driving wheels can follow the rotation of the lifting device. Therefore, automatic handling technology can be used in conventional parking lots to realize automatic storage and retrieval of vehicles, and the vehicle does not need to be completely lifted, reducing the risk of rollover and overturning, greatly reducing the requirements of the smart garage on the building structure, and facilitating the promotion of automatic parking technology.

[0044] The walking chassis 1 is a rectangular frame structure, including two parallel first fixing columns 11, the two ends of the first fixing columns 11 are connected and fixed by second fixing columns 12, and a walking wheel 13 is fixed on both sides of the end face of each second fixing column 12, and the axial direction of the walking wheel 13 is parallel to the axial direction of the second fixing column 12, so that the lifting device can at least move along the axial direction of the first fixing column 11 to achieve longitudinal entry and exit from the bottom of the vehicle body.

[0045] A protective cover 14 is provided on the outside of the travel wheel 13, and the protective cover 14 surrounds the two axial sides of the travel wheel 13 and the side away from the second fixed column 12; an anti-collision wheel 15 is fixed on the protective cover 14 and is located on the outside of the travel wheel 13 in the axial direction, and the axial direction of the anti-collision wheel 15 is along the vertical direction, and the wheel surface of the anti-collision wheel 15 exceeds the outer side surface of the first fixed column 11. The movement of the lifting device is guided and protected by the anti-collision wheel 15 to prevent the first fixed column 11 from sliding relative to the wall, the vehicle body and other parts, resulting in scratches. The protective cover 14 can be fixed to the end face of the second fixed column 12 by screwing, welding and other means. In a preferred embodiment, the two ends of the second fixed column 12 are clamped in the first fixed column 11, and the protective cover 14 is connected to the first fixed column 11 and the second fixed column 12 at the same time, thereby improving the structural strength of the travel chassis 1. The anti-collision wheel 15 can be fixed to the protective cover 14 by a conventional rotating wheel seat structure.

[0046] The walking chassis 1 is also provided with a driving mechanism 16 fixed on any second fixed column 12, and the driving mechanism 16 includes a bearing seat 161 and a fixed seat 162 fixed on both sides of the outer end surface of the second fixed column 12, the bearing seat 161 and the fixed seat 162 are located between the walking wheels 13 on both sides, and a bearing (not shown) and a walking motor 163 axially parallel to the bearing are fixed on the fixed seat 162. The driving mechanism 16 also includes a transmission rod 164 passing through the bearing seat 161 and the bearing, and a first gear 165 is fixedly provided on the output end of the walking motor 163, and a second gear 166 meshing with the first gear 165 is fixed on the transmission rod 164, and a third gear 167 is respectively fixed at both ends of the transmission rod 164, and a fourth gear 168 is fixed on the wheel axle of the walking wheel 13, and the fourth gear 168 and the walking wheel 13 are respectively located on both sides of the protective cover 14, and the third gear 167 is meshed with the fourth gear 168. The driving rod 164 is driven to rotate by the rotation of the traveling motor 163 , thereby realizing the synchronous rotation of the traveling wheels 13 at both sides, and the two traveling wheels 13 at the other end can be used as driven wheels.

[0047] Combination Figure 2 and Figure 7 The lifting mechanism 3 includes a lifting screw rod 32 and a lifting motor 33 matched with the lifting screw rod 32. The lifting slopes 31 at both ends are respectively screwed and matched with the two ends of the lifting screw rod 32. The external threads at both ends of the lifting screw rod 32 are in opposite directions. The lifting motor 33 is arranged in the horizontal direction to drive the lifting screw rod 32 to rotate. Since the threads at both ends of the lifting screw rod 32 are in opposite directions, the lifting screw rod 32 is driven to rotate by the lifting motor 33, so that the lifting slopes 31 screwed at both ends of the lifting screw rod 32 are synchronously moved closer or farther away, and the support height of the lifting wheel 21 on both sides is kept the same.

[0048] Combination Figure 2 and Figure 3The walking chassis 1 further comprises two mutually parallel fixing plates 17, the fixing plates 17 connecting the first fixing columns 11 on both sides and being located between the two second fixing columns 12, the lifting mechanism 3 further comprises a lifting track 34 fixed on the fixing plates 17, the lifting slope 31 is slidably matched with the lifting track 34, and the lifting track 34 is perpendicular to the length direction of the fixing plates 17. Figure 7 The lifting screw rod 32 is passed through and fixed on the fixing plate 17, and cooperates with the fixing plate 17 to rotate freely. One end of the lifting screw rod 32 cooperates with the lifting motor 33 through a worm gear structure (not shown in the figure). The lifting motor 33 is preferably arranged between the two walking wheels 13 for setting the driving mechanism 16, so as to reduce the longitudinal length of the lifting device. Through the cooperation of the two self-locking structures of the worm gear and the screw nut, the clamping mechanism 2 is stably driven to rise and fall, thereby preventing the clamping mechanism 2 from automatically descending due to excessive lifting.

[0049] refer to Figure 3 The lifting slope 31 includes two sliders 311, and the sliders 311 have an inclined surface facing the clamping mechanism 2. Two lifting rails 34 are fixed on the fixing plate 17, which are respectively slidably matched with the sliders 311. The two ends of the lifting screw 32 are respectively screwed with a nut seat 35, and the two sides of the nut seat 35 are respectively fixedly connected with the two sliders 311. When the lifting screw 32 rotates, it can drive the nut seat 35 to change its position along the length direction of the lifting screw 32, thereby driving the slider 311 to slide and change its position along the lifting rail 34.

[0050] refer to Figure 4 Two clamping arms 22 are arranged on each side of the clamping mechanism 2. The four clamping arms 22 can pass through the bottom of the vehicle body in parallel with the longitudinal direction of the vehicle body. The two clamping arms 22 in front of the wheel can be switched between the retracted state and the open state synchronously, and the two clamping arms 22 at the rear can also switch states synchronously. The retracted state is that the axial direction of the clamping arm 22 is parallel to the longitudinal direction of the vehicle body, and the open state is that the axial direction of the clamping arm 22 is parallel to the axial direction of the wheel.

[0051] When the lifting device enters or leaves the bottom of the vehicle body, the four front and rear clamp arms 22 are in a retracted state to prevent the clamp arms 22 from interfering with the wheels. The two clamp arms 22 on the same side are coaxial and the rotating ends are away from each other. After entering the bottom of the vehicle body, the two clamp arms 22 away from the wheel can be switched to an open state first, and the lifting device can be driven to move longitudinally so that the clamp arms 22 in the open state contact with the wheel. The lifting device stops moving, and then the clamp arms 22 in the retracted state are controlled to rotate to an open state. After the front and rear clamp arms 22 respectively contact the front and rear wheel surfaces at the bottom of the wheel, the clamping mechanism 2 can be lifted by the lifting mechanism 3 to lift the wheel off the ground.

[0052] The clamping mechanism 2 is a rectangular frame mechanism, including clamping arm plates 23 on both sides and lifting plates 24 at both ends. The lifting wheel 21 is fixed to the side of the lifting plate 24 facing the lifting slope 31. A clamping arm 22 is respectively provided near the two ends on each clamping arm plate 23. A lifting wheel 21 is respectively overlapped on the inclined surface 311 of the two sliders. The two lifting wheels 21 are coaxially fixed, and the fixed axis of the lifting wheel 21 is cantilevered and fixed outward relative to the lifting plate 24.

[0053] The clamp arm 22 is hingedly fixed on the clamp arm plate 23, and the hinge axis of the clamp arm 22 is in the vertical direction; a clamp arm turbine 221 is fixed on the hinge axis of the clamp arm 22, and each clamp arm turbine 221 is correspondingly provided with a clamp arm worm 222, and the clamp arm worm 222 is respectively fixed on the clamp arm plate 23 on the side of the two lifting rails 34 sliding and changing positions along the longitudinal direction of the vehicle body, and the two clamp arm worm 222 at the front end and the two clamp arm worm 222 at the rear end are respectively connected by chains 223, and the clamp arm plates 23 on both sides are respectively provided with a clamp arm motor 224 for driving the front end and the rear end clamp arm worm 222 to rotate, when the clamp arm motor 224 rotates, the two clamp arms 22 on both sides are synchronously contracted or opened; the two ends of the clamp arm worm 222 are respectively fixed on a clamp arm bearing seat 225, and a sprocket (not shown) is respectively fixed on one end of the clamp arm worm 222 facing the lifting plate 24, and the sprockets of the two clamp arm worm 222 at the same end are connected by the chain 223. The rotation of the clamp arm motor 224 drives a clamp arm worm 222 to rotate, and the two clamp arms 22 at the front or rear end are moved simultaneously through the transmission of the chain 223. By reasonably selecting the shapes of the clamp arm turbine 221 and the clamp arm worm 222, the clamp arms 22 on both sides can be opened or closed at the same time, so that the states of the two clamp arms 22 can be conveniently controlled by one clamp arm motor 224. In addition, a worm gear structure is used in power transmission, and the self-locking function of the worm gear can be used to prevent the clamp arm 22 from rotating under the pressure of the vehicle body and causing the wheel to detach from the clamp arm 22.

[0054] Combination Figure 5The clamp arm 22 includes a base 226 and a movable plate 227. The side of the base 226 facing the wheel is an inclined surface. The end of the movable plate 227 away from the wheel is hinged to the base 226 through a torsion spring 228. The shape of the movable plate 227 is roughly the same as that of the base 226. When the torsion spring 228 is in a natural state, there is a gap between the movable plate 227 and the surface of the base 226. When the movable plate 227 contacts the surface of the base 226, the clamp arm motor 224 stops working. A contact electrode (not shown) can be set on the base 226 or the movable plate 227. When the movable plate 227 is in contact with the base 226, the circuit where the contact electrode is located is turned on, and the clamp arm motor 224 stops working after receiving the electrical signal, so that the clamp arm 22 is locked at the current position, thereby completing the wheel clamping; when the clamp arm 22 does not contact the wheel, the movable plate 227 maintains a gap with the base 226 under the action of the torsion spring 228, so that the clamp arm motor 224 can work normally.

[0055] Combination Figure 3 , 4 6. At least one guide plate 18 is further provided on one side of the fixed plate 17 facing the lifting plate 24. The guide plate 18 is fixed in the vertical direction. A guide roller 181 is fixed on both sides of the guide plate 18, and the guide roller 181 is a cylindrical structure. Two rows of guide wheels 25 are fixed on one side of the lifting plate 24 facing the fixed plate 17. The wheel surface of the guide wheel 25 is a concave surface that cooperates with the guide roller 181. The two rows of guide wheels 25 cooperate with the two guide rollers 181 respectively. Thus, the two rows of guide wheels 25 clamp the guide rollers 181 on both sides for guiding and limiting vertical movement. In this embodiment, two guide wheels 25 are provided in each row, one guide plate 18 is provided on both sides of the fixed plate 17, and two groups of guide wheels 25 that cooperate with the guide plates 18 are correspondingly provided on the lifting plate 24.

[0056] In order to enable the lifting device to move conveniently and flexibly in the parking lot, in this embodiment, an electrical system 4 is also accommodated in the rectangular frame of the clamping mechanism 2. The electrical system 4 integrates a power supply and a control unit for controlling the operation of the lifting device. By embedding the corresponding control program, the lifting device can completely rely on the power supply and control unit of the electrical system 4 to complete its work, and get rid of the dependence on external power supply and control unit. Moreover, the thickness of the entire device and the dimensions in other directions are not affected, so that the lifting device can be moved to any position in the parking lot, which greatly facilitates the work of automatic storage and retrieval of vehicles.

[0057] refer to Figure 7 Based on the lifting device, this embodiment also provides a car transporter, including two lifting devices softly connected in the longitudinal direction, combined with Figure 8A connecting rod 5 is fixed to the end of the walking chassis 1 of the lifting device along the longitudinal direction of the vehicle body. The connecting rods 5 of the front and rear lifting devices are staggered in the horizontal direction so as to partially overlap. The two connecting rods are respectively fixedly connected to the two ends of a flexible wire 52. The flexible wire 52 is a U-shaped structure with the two ends facing the same direction. The two ends of the flexible wire 52 can change the extension length relative to the bottom of the U-shaped structure. Figure 8 The upper middle figure shows the state of the flexible wire 52 when the two lifting devices are away from each other, and the lower figure shows the state of the flexible wire 52 when the two lifting devices are close to each other.

[0058] Therefore, when the two lifting devices move relative to each other, the length of the overlapping portion at both ends of the flexible wire 52 can be adaptively changed to achieve electrical connection between the two lifting devices and to uniformly control the two lifting devices.

[0059] When in use, first make the two lifting devices synchronously enter the bottom of the vehicle body along the longitudinal direction so that the two clamping mechanisms 2 are both between the front and rear wheels, then control the two clamping mechanisms 2 to move away from the corresponding front and rear wheels and switch the two clamping arms 22 to the open state, synchronously or independently control the two lifting devices to move toward the corresponding wheel direction along the longitudinal direction so that the clamping arms 22 in the open state touch the wheel, then control the clamping arms 22 in the retracted state to open, and the movable plates 227 of the clamping arms 22 stop moving after touching the wheel, thereby completing the clamping of the wheel, and then control the lifting mechanisms 3 of the two lifting devices respectively to lift the wheels. After the vehicle is lifted, the vehicle can be moved to any position. Through the cooperation of the two lifting devices, the transportation of common household vehicles is realized, and the two lifting devices can be independently controlled to adapt to vehicles with different wheelbases. It is easy to use and has good prospects for promotion and application.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wheel lifting device, characterized in that: It comprises a running chassis and a clamping mechanism arranged on the running chassis, wherein the running chassis is provided with a lifting mechanism for driving the clamping mechanism to move in a vertical direction; the running chassis can move in the longitudinal direction of the vehicle body; the clamping mechanism cooperates with the wheel clamp; The lifting mechanism comprises lifting slopes disposed at both ends of the clamping mechanism in the longitudinal direction, the two lifting slopes are arranged facing each other, and lifting wheels cooperating with the surfaces of the lifting slopes are respectively fixed at both ends of the clamping mechanism in the longitudinal direction, and the two lifting slopes can move synchronously relative to each other; The lifting mechanism includes a lifting screw and a lifting motor matched with the lifting screw, the lifting slopes at both ends are respectively screwed and matched with the two ends of the lifting screw, the external threads at the two ends of the lifting screw are in opposite directions, the lifting motor is arranged in the horizontal direction, and one end of the lifting screw is matched with the lifting motor through a worm gear structure; The walking chassis comprises two first fixing columns arranged in parallel, the two ends of the first fixing columns are respectively connected and fixed by second fixing columns, and a walking wheel is respectively fixed on both sides of the end surface of each second fixing column, and the axial direction of the walking wheel is parallel to the axial direction of the second fixing column; The walking chassis also includes two mutually parallel fixing plates, the fixing plates are connected to the first fixing columns on both sides and are located between the two second fixing columns, the lifting mechanism also includes a lifting track fixed on the fixing plate, the lifting slope is slidably matched with the lifting track, and the lifting track is perpendicular to the length direction of the fixing plate; the lifting screw rod is passed through and fixed on the fixing plate, and is freely rotatably matched with the fixing plate; The lifting slope comprises two sliders, one side of the sliders facing the clamping mechanism is an inclined surface, two lifting rails respectively slidably matched with the sliders are fixed on the fixed plate, and two ends of the lifting screw rod are respectively screwed with a nut seat, and the two sides of the nut seat are respectively fixedly connected with the two sliders; A protective cover is arranged on the outside of the traveling wheel, and the protective cover surrounds both sides of the traveling wheel's axial direction and a side away from the second fixed column; an anti-collision wheel located on the outside of the traveling wheel's axial direction is fixed on the protective cover, and the axial direction of the anti-collision wheel is along the vertical direction, and the wheel surface of the anti-collision wheel exceeds the outer side surface of the first fixed column.

2. A wheel lifting device according to claim 1, characterized in that: Two clamping arms are arranged on each side of the clamping mechanism, and the four clamping arms can pass through the bottom of the vehicle body in parallel with the longitudinal direction of the vehicle body. The two clamping arms in front of the wheel can be switched between the retracted state and the open state synchronously, and the two clamping arms at the rear can also switch the state synchronously. The retracted state is that the axis of the clamping arm is parallel to the longitudinal direction of the vehicle body, and the open state is that the axis of the clamping arm is parallel to the axis of the wheel.

3. A wheel lifting device according to claim 2, characterized in that: The clamping mechanism is a rectangular frame structure, including clamping arm plates on both sides and lifting plates at both ends. The lifting wheels are fixed to the side of the lifting plate facing the lifting slope. Each clamping arm plate is provided with a clamping arm near both ends. A lifting wheel is overlapped on the inclined surface of the two sliders. The two lifting wheels are coaxially fixed, and the fixed axis of the lifting wheel is cantilevered and fixed outward relative to the lifting plate. The clamp arm is hinged and fixed on the clamp arm plate, and the hinge axis of the clamp arm is in the vertical direction; a clamp arm turbine is fixed on the hinge axis of the clamp arm, and each clamp arm turbine is correspondingly provided with a clamp arm worm, and the clamp arm worms are respectively fixed to the clamp arm plates on both sides along the longitudinal direction of the vehicle body, and the two clamp arm worms at the front end and the two clamp arm worms at the rear end are respectively connected by chains, and a clamp arm motor for driving the front end and the rear end clamp arm worms to rotate is respectively provided on the clamp arm plates on both sides, and when the clamp arm motor rotates, the two clamp arms on both sides are synchronously retracted or opened; The two ends of the clamp arm worm are respectively fixed on a clamp arm bearing seat, and a sprocket is respectively fixed on one end of the clamp arm worm facing the lifting plate, and the sprockets of the two clamp arm worms at the same end are connected by the chain.

4. A wheel lifting device according to claim 3, characterized in that: The clamping arm includes a base and a movable plate. The side of the base facing the wheel is an inclined surface. The end of the movable plate away from the wheel is hinged to the base through a torsion spring. The shape of the movable plate is roughly the same as that of the base. When the torsion spring is in a natural state, there is a gap between the movable plate and the surface of the base. When the movable plate contacts the surface of the base, the clamping arm motor stops working.

5. A wheel lifting device according to claim 3, characterized in that: At least one guide plate is also provided on one side of the fixed plate facing the lifting plate, the guide plate is fixed in the vertical direction, and a guide roller is fixed on both sides of the guide plate, and the guide roller is a cylindrical structure; Two rows of guide wheels are fixed on one side of the lifting plate facing the fixed plate, the wheel surface of the guide wheel is a concave surface matched with the guide roller, and the two rows of guide wheels are matched with the two guide rollers respectively.

6. A wheel lifting device according to claim 1, characterized in that: The walking chassis is also provided with a driving mechanism fixed on any second fixed column, the driving mechanism includes a bearing seat and a fixed seat fixed on both sides of the outer end surface of the second fixed column, the bearing seat and the fixed seat are located between the walking wheels on both sides, a bearing and a walking motor axially parallel to the bearing are fixed on the fixed seat, the driving mechanism also includes a transmission rod passing through the bearing seat and the bearing, a first gear is fixedly provided on the output end of the walking motor, a second gear meshing with the first gear is fixed on the transmission rod, and a third gear is respectively fixed at both ends of the transmission rod, a fourth gear is fixed on the wheel axle of the walking wheel, the fourth gear and the walking wheel are respectively located on both sides of the protective cover, and the third gear meshes with the fourth gear.

7. A car transporter based on the wheel lifting device according to any one of claims 1 to 6, characterized in that: It includes two lifting devices which are softly connected along the longitudinal direction.

8. The vehicle carrier according to claim 7, characterized in that: A connecting rod is fixed at the end of the walking chassis of the lifting device along the longitudinal direction of the vehicle body, the connecting rods of the front and rear lifting devices are staggered in the horizontal direction, and the two connecting rods are fixedly connected to the two ends of a flexible wire respectively; the flexible wire is a U-shaped structure with both ends facing the same direction, and the two ends of the flexible wire can change the extension length relative to the bottom of the U.

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