CN210264089U

CN210264089U - Avoidance-free three-dimensional parking device

Info

Publication number: CN210264089U
Application number: CN201920994432.7U
Authority: CN
Inventors: 蓝永庭; 周永杰; 罗仪林; 罗帆
Original assignee: Guangxi University of Science and Technology
Current assignee: Guangxi University of Science and Technology
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-04-07
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses a do not have sky parking device of dodging belongs to sky parking equipment technical field, which comprises a base, big arm, lift the pneumatic cylinder, the connecting piece, platform arm and parking platform, big arm, lift on pneumatic cylinder and the connecting piece all located the base, the upside of big arm is located to the connecting piece, the downside of big arm is located to the lift pneumatic cylinder, the articulated base of one end of big arm, the lower extreme of the articulated platform arm of the other end of big arm, the one end of connecting piece articulates in the upper end of base, the other end of connecting piece articulates in the upper end of platform arm, big arm, a pedestal, connecting piece and platform arm are around constituteing a parallelogram mechanism, the articulated base of one end of lift pneumatic cylinder, the articulated big arm of the other end of lift pneumatic cylinder, the last self-locking mechanism that lifts of installing of lift pneumatic cylinder, parking platform fixed connection platform. The utility model discloses a sky parking device simple structure, it is small, with low costs moreover, application scope is wide.

Description

Avoidance-free three-dimensional parking device

Technical Field

The utility model relates to a sky parking equipment technical field, especially a do not have sky parking device of dodging.

Background

With the development of society, the number of urban automobiles increases exponentially, and especially the amount of private automobiles to be kept increases sharply, so that the urban roads are crowded and the problem of increasingly serious environmental pollution is caused, and an otherwise scarce parking space is sharply short. The traditional parking mode causes the situation of difficult parking in the modern society due to the fact that road resources are occupied and the quantity is limited, traffic pressure is indirectly increased, and the stereo garage is produced at the same time for solving the problem. The stereo garage can not only relieve the problem of the shortage of plane parking spaces, but also protect the vehicles of users from being damaged to a certain extent; meanwhile, the social bad phenomenon that part of car owners stop disorderly due to no ground parking is avoided. The rapid development of the three-dimensional parking technology is one of effective ways for solving the existing urban parking difficulty.

The traditional small-sized parking machine is only provided with a second layer on the basis of the original parking space, the space utilization rate is not high, and the use is inconvenient. And can produce the interference when parkking from top to bottom, can't accomplish not having to dodge, the parking equipment that most do not have to dodge is bulky, is not suitable for private use, and the small nothing of volume dodges parking machinery also can only use on original parking stall, and application scope is little. And the traditional three-dimensional parking device adopts a mode of taking parking space by a mobile pair, and the parking space is taken by the mobile pair, so that the parking space is high in manufacturing cost, complex in structure, large in resistance and high in requirement on lubrication.

Chinese patent application publication No. CN105089307A discloses a double-arm type avoidance-free stereo garage based on hydraulic drive in 2015, 11/25, which comprises a guide rail, two support columns slidably arranged on the guide rail, a hydraulic cylinder, a lifting rod, a connecting rod, a lead screw and a self-locking mechanism, wherein a connecting plate is arranged between the two support columns, the upper end of the connecting plate is connected with a support plate parallel to the guide rail, the upper end of the support plate is movably connected with a parking plate, and the lower end of the parking plate is provided with a rotating mechanism; one end of the lifting rod is hinged to the bottom of the support column, the other end of the lifting rod is propped against the support plate through a pulley, one end of the hydraulic cylinder is hinged to the upper end of the support column, and the other end of the hydraulic cylinder is hinged to the lifting rod; the lead screw is arranged in a threaded hole formed in the support column and is in transmission connection with the support column, one end of the connecting rod is connected with the lifting rod, the other end of the connecting rod is hinged with the self-locking mechanism, one end of the self-locking mechanism is in transmission connection with the lead screw, and the other end of the self-locking mechanism is connected in a hole formed in the two ends of the support plate. If the vehicle is parked in the upper parking space, when the vehicle is parked, the motor drives the supporting column to horizontally move forwards on the guide rail, and then when the supporting column moves to a specified position, the motor drives the parking plate to horizontally rotate 90 degrees clockwise, so that the parking plate is parallel to the road direction. Then the motor drives the screw rod mechanism to move downwards, the hydraulic machine drives the hydraulic cylinder to extend, the supporting plate is made to descend to the ground stably, and at the moment, the vehicle is driven into the parking plate and returns to the original position according to the same process. Although this stereo garage has solved bulky problem, can accomplish comparatively convenient access car, the parking in lower floor's parking stall is influenced in its setting of pneumatic cylinder, lifting rod and connecting rod, and it is except that the guide rail, other parts all need all remove along the guide rail with the support column together in addition, still can't get rid of traditional stereo parking device and adopt the mode that the parking was got to the sliding pair formula, the sliding pair formula is got the parking stall cost height, the structure is complicated, the resistance is big and still do not solve to lubricated very high problem of requirement.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the avoidance-free three-dimensional parking device is provided, and has the advantages of simple structure, small volume, low cost and wide application range.

In order to achieve the above purpose, the utility model adopts the technical proposal that: a non-avoidance three-dimensional parking device, which comprises a base, a big arm, a lifting hydraulic cylinder, a connecting piece, a platform arm and a parking platform, the big arm, the lifting hydraulic cylinder and the connecting piece are all arranged on the base, the connecting piece is arranged on the upper side of the big arm, the lifting hydraulic cylinder is arranged on the lower side of the large arm, one end of the large arm is hinged with the base, the other end of the large arm is hinged with the lower end of the platform arm, one end of the connecting piece is hinged with the upper end of the base, the other end of the connecting piece is hinged with the upper end of the platform arm, the large arm, the base, the connecting piece and the platform arm form a parallelogram mechanism in a surrounding manner, one end of the lifting hydraulic cylinder is hinged with the base, the other end of the lifting hydraulic cylinder is hinged with the large arm, and the lifting hydraulic cylinder is provided with a lifting self-locking mechanism, and the parking platform is fixedly connected with the platform arm.

Further, the lifting hydraulic cylinder comprises a cylinder body, a piston and a piston rod, one end of the cylinder body is hinged to the base, a hydraulic cavity is arranged in the cylinder body, one end of the cylinder body, which is far away from the base, is provided with an opening communicated with the hydraulic cavity, the piston is slidably mounted in the hydraulic cavity, one end of the piston rod is fixed to the piston, the other end of the piston rod penetrates out of the opening, a self-locking groove is formed in one end, which is close to the piston, of the piston rod, a locking hole is formed in one end, which is close to the opening, of the cylinder body, and the locking hole is located on.

Furthermore, the lifting self-locking mechanism is arranged at one end of the cylinder body close to the opening and comprises an electromagnetic magnet, a slide rod, a transmission part and a slide block, the electromagnetic magnet is fixed on the outer wall of the cylinder body, the sliding rod is arranged on one side of the electromagnetic magnet close to the opening, the sliding rod is slidably arranged on the outer wall of the cylinder body, the magnet is fixed at one end of the sliding rod close to the electromagnetic magnet, the magnet and the electromagnetic magnet are arranged at intervals, a compression spring is arranged between the magnet and the electromagnetic magnet, one end of the sliding rod, which is far away from the electromagnetic magnet, is fixedly connected with one end of the transmission part, the sliding block is connected with the lock hole in a sliding manner, one end of the sliding block is arranged outside the lock hole and connected with one end, far away from the sliding rod, of the transmission piece, and the sliding rod drives the sliding block to slide along the lock hole through the transmission piece. When the electromagnetic magnet is not electrified, the magnet and the sliding rod move towards one end of the opening under the action of the elastic force of the compression spring to drive the transmission part to move, the transmission part drives the sliding block to slide towards the deep part of the lock hole, if the lock hole is aligned with the self-locking groove at the moment, the inner end of the sliding block directly enters the self-locking groove to clamp the piston rod, and the self-locking of the lifting hydraulic cylinder is realized; if the lockhole is not aligned with the self-locking groove at the moment, the inner end of the sliding block can abut against the piston rod and is in sliding connection with the piston rod, and when the piston rod moves under the action of hydraulic pressure of oil liquid, the inner end of the sliding block can enter the self-locking groove to clamp the piston to realize self-locking of the lifting hydraulic cylinder. When the electromagnetic magnet is electrified, the electromagnetic magnet can generate a suction force to the magnet, the magnet and the slide rod move towards the direction of the electromagnetic magnet under the action of the suction force to drive the transmission part to move, the transmission part drives the slide block to slide towards the outer side of the lock hole, the inner end of the slide block is separated from the self-locking groove, and the self-locking of the lifting hydraulic cylinder is released.

Further, the transmission part comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, one end of the first connecting rod is fixedly connected with one end of the sliding rod far away from the electromagnetic magnet, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is fixedly connected with one end of the third connecting rod, the third connecting rod is rotatably connected with the outer wall of the cylinder body, one end of the fourth connecting rod is fixed on the third connecting rod, the fourth connecting rod and the lock hole are positioned on the same side of the cylinder body, the third connecting rod is arranged on one side of the lock hole close to the opening, one end of the fourth connecting rod far away from the third connecting rod is slidably connected with the sliding block, the first connecting rod and the second connecting rod are different in length direction, the first connecting rod is parallel to the sliding rod, and the third connecting rod is vertically connected with the second connecting rod, the third connecting rod is perpendicular to the first connecting rod, the fourth connecting rod is perpendicular to the third connecting rod, and the second connecting rod is perpendicular to the fourth connecting rod.

Further, the upper surface of the parking platform is provided with two grooves for limiting the movement of the front wheels. The groove can be used for positioning the vehicle, so that the vehicle is prevented from moving after being stopped on the parking platform.

Further, the base includes lower carriage and last supporting seat, go up the lower extreme of supporting seat with the upper end fixed connection of lower carriage, the lower carriage buries in the underground, go up the supporting seat and locate the ground top, the cylinder body articulate in the lower extreme of going up the supporting seat. The lower supporting seat is buried underground, so that the base is prevented from occupying too much ground space, and meanwhile, enough supporting force can be provided.

Furthermore, the connecting piece and the parking platform are respectively connected to two ends of the platform arm, and the large arm is connected to the middle of the platform arm.

Furthermore, the connecting piece is a turnover hydraulic cylinder which is provided with a turnover self-locking mechanism, and the turnover self-locking mechanism and the lifting self-locking mechanism are identical in structure. In the process that the lifting hydraulic cylinder drives the large arm to rotate, the length of the overturning hydraulic cylinder is unchanged in locking, the parking platform is kept horizontal, when the parking platform does not have a car, the overturning hydraulic cylinder contracts, the parking platform is overturned and erected, and occupation of an upper layer space is reduced.

Due to the adoption of the technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a do not have function and advantage of dodging sky parking device has traditional parking stall to simple structure, it is small, with low costs. The utility model discloses a big arm, base, connecting piece and platform arm are around forming the revolute pair of parallelogram mechanism for parking platform keeps the horizontality at big arm upset in-process, and through big arm, hydraulic lifting cylinder, connecting piece and platform arm lift the parking board and park or get the car, can shorten the speed of getting the parking greatly. The utility model discloses a drive power is hydraulic lifting cylinder, and energy resource consumption is few, the simple structure of whole device, small, and the utility model discloses a do not have the sky parking device of dodging and do not interfere to the parking of lower floor's parking stall. And the utility model discloses a do not have and dodge sky parking device is mainly formed by connecting big arm, base, connecting piece, platform arm and these rigid structure of parking platform, and the cost is low, simple structure safety, resistance are little and not high to the lubricated requirement, and long service life gets the parking for the sliding pair that current sky parking device adopted, has very big advantage, easily promotes.

2. The utility model discloses a do not have space utilization who dodges sky parking device and high, application scope is wide, can extensively apply to the district parking area, roadside parking area, this device can also make full use of district idle space, for example on the green belt that can't park, on the green land such as clever front and back of utilizing the roadside room of road, the space increases the parking stall under the tree shade, solves parking and afforestation conflict, and public places parking such as specially adapted district is used.

3. The utility model discloses a when parking platform did not have the vehicle on, the shrink of upset pneumatic cylinder can erect parking platform rotation, reduces parking platform and to the occuping in space, when needing to park, and the extension of the pneumatic cylinder that overturns of controlling again truns into horizontality with parking platform.

4. The lifting self-locking mechanism of the utility model slides to the innermost end of the lock hole through the transmission of the slide bar and the transmission part under the action force of the compression spring under the condition that the electromagnetic magnet is not electrified, and is clamped into the self-locking groove to complete self-locking; when the electromagnetic magnet is electrified, the electromagnetic magnet generates attraction force on the magnet, and under the action of the attraction force, the sliding block slides to the outer end of the lock hole through the transmission of the sliding rod and the transmission piece to be separated from the self-locking groove, so that unlocking is completed. Therefore, under the emergency conditions of power failure or damage of the electromagnetic magnet and the like, the lifting self-locking mechanism can still keep a self-locking state, and the condition that safety accidents are caused by power failure is avoided.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of an avoidance-free three-dimensional parking device according to the present invention;

fig. 2 is a schematic side view of the avoidance-free three-dimensional parking apparatus of the present invention;

fig. 3 is a front view of the lifting hydraulic cylinder and the lifting self-locking mechanism of the present invention;

fig. 4 is a top view of the lifting hydraulic cylinder and the lifting self-locking mechanism of the present invention;

fig. 5 is a schematic cross-sectional view of a lifting cylinder of the present invention;

fig. 6 is an upper-layer parking schematic view of the avoidance-free three-dimensional parking device of the present invention;

fig. 7 is a schematic view of another upper parking layer of the avoidance-free three-dimensional parking device according to the present invention;

fig. 8 is a schematic view of the parking plate erecting of the avoidance-free three-dimensional parking apparatus of the present invention;

the parking device comprises a base 1, a lower supporting seat 11, an upper supporting seat 12, a large arm 2, a lifting hydraulic cylinder 3, a cylinder 31, a piston 32, a piston rod 33, a self-locking groove 34, a locking hole 35, a connecting piece 4, a platform arm 5, a parking platform 6, a lifting self-locking mechanism 7, an electromagnetic magnet 71, a magnet 72, a sliding rod 73, a compression spring 74, a transmission piece 75, a first connecting rod 751, a first connecting rod 752, a second connecting rod 753, a third connecting rod 753, a fourth connecting rod 754, a sliding block 76 and a groove 8.

Detailed Description

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

Referring to fig. 1, 2, 6, 7 and 8, the avoidance-free three-dimensional parking device comprises two bases 1, two large arms 2, two lifting hydraulic cylinders 3, two connecting pieces 4, two platform arms 5 and a parking platform 6, wherein the bases 1 support the whole three-dimensional parking device, the large arms 2, the lifting hydraulic cylinders 3 and the connecting pieces 4 are all installed on the bases 1, the platform arms 5 are connected with the bases 1 through the large arms 2, the lifting hydraulic cylinders 3 and the connecting pieces 4, and the parking platform 6 is fixedly connected with the platform arms 5. The lifting hydraulic cylinder 3 drives the large arm 2 to rotate, the large arm 2 drives the parking platform 6 to rotate to realize lifting, the vehicle is parked on the parking platform 6, and the connecting piece 4 keeps the parking platform 6 horizontal.

Two bases 1 are installed respectively in the inner of the both sides of lower floor's parking stall, and two 1 symmetries of base set up, and base 1 includes lower support seat 11 and last supporting seat 12, goes up the lower extreme of supporting seat 12 and the upper end fixed connection of lower support seat 11, and during the installation, lower support seat 11 buries in the underground to it is fixed with concrete placement, goes up supporting seat 12 and locates the ground top. Lower bearing seat 11 buries in the underground and fixes with concrete placement, avoids base 1 to occupy too much ground space and influence lower floor's parking stall, can provide sufficient holding power simultaneously, keeps supporting firm reliable.

Two big arms 2 are respectively arranged on the two bases 1, one end of each big arm 2 is hinged to the middle of the upper supporting seat 12, the other end of each big arm 2 is hinged to the platform arm 5, and each big arm 2 is provided with a lightening hole. Two connecting pieces 4 are respectively installed on two bases 1, the upper side of the large arm 2 is arranged on the connecting pieces 4, one end of each connecting piece 4 is hinged to the upper end of the upper supporting seat 12, and the other end of each connecting piece 4 is hinged to one end, far away from the large arm 2, of the platform arm 5. Parking platform 6 fixed connection is in platform arm 5 the one end of keeping away from connecting piece 4, and the tie point of big arm 2 and platform arm 5 is located between the tie point of connecting piece 4 and platform arm 5 and the tie point of parking platform 6 and platform arm 5. The connecting piece 4 is parallel with the large arm 2, the upper supporting seat is parallel with the platform arm 5, and the parking platform 6 is horizontally arranged. The upper surface of parking platform 6 is equipped with two recesses 8 that are used for restricting the front wheel removal, and recess 8 can be fixed a position the vehicle. Inclined planes are arranged at two ends of the parking platform 6, so that vehicles can conveniently drive on the parking platform 6.

Big arm 2, upper support 12, connecting piece 4 and platform arm 5 are around forming a parallelogram mechanism, and when big arm 2 rotated, drive connecting piece 4 and platform arm 5 and rotate, at the rotation in-process, big arm 2, upper support 12, connecting piece 4 and platform arm 5 enclosed into a parallelogram mechanism all the time to make parking platform 6 keep the level at big arm 2 rotation in-process.

Referring to fig. 1, 2 and 5, two lifting hydraulic cylinders 3 are respectively mounted on two bases 1, the lifting hydraulic cylinders 3 are disposed at the lower side of the large arm 2, one end of each lifting hydraulic cylinder 3 is hinged to the lower end of an upper support 12, the other end of each lifting hydraulic cylinder 3 is hinged to the middle of the large arm 2, and a lifting self-locking mechanism 7 is mounted on each lifting hydraulic cylinder 3. The lifting hydraulic cylinder 3 comprises a cylinder body 31, a piston 32 and a piston rod 33, one end of the cylinder body 31 is hinged to the lower end of the upper supporting seat 12, a hydraulic cavity is arranged in the cylinder body 31, one end, far away from the upper supporting seat 12, of the cylinder body 31 is provided with an opening communicated with the hydraulic cavity, the piston 32 is slidably installed in the hydraulic cavity, the central axis of the piston rod 33 coincides with the central axis of the piston, one end of the piston rod 33 is fixed on the piston 32, the other end of the piston rod 33 penetrates out of the opening, one end, close to the piston 32, of the piston rod 33 is provided with two self-locking grooves 34, the two self-locking grooves 34 are symmetrically arranged relative to the central axis of the piston rod 33, one end, close to the opening, of the cylinder body 31 is provided with two locking holes.

Referring to fig. 3 and 4, the lifting self-locking mechanism 7 is installed at one end of the cylinder 31 near the opening, and the lifting self-locking mechanism 7 includes an electromagnetic magnet 71, a magnet 72, a sliding rod 73, two transmission members 75, and two sliders 76. The electromagnetic magnet 71 is fixed on the outer wall of the cylinder 31, the sliding rod 73 is arranged on one side, close to the opening, of the electromagnetic magnet 71, the sliding rod 73 is slidably installed on the outer wall of the cylinder 31 through a sliding sleeve, the magnet 72 is fixed at one end, close to the electromagnetic magnet 71, of the sliding rod 73, the magnet 72 and the electromagnetic magnet 71 are arranged at intervals, a compression spring 74 is arranged between the magnet 72 and the electromagnetic magnet 71, one ends of the electromagnetic magnet 71, the magnet 72, the compression spring 74 and the sliding rod 73 are covered by a cover, and the cover is provided with a through hole for the sliding rod 73 to. One end of the sliding rod 73 far away from the electromagnetic magnet 71 is fixedly connected with a transition rod, the transition rod is perpendicularly connected with the sliding rod 73, the sliding rod 73 is connected to the middle of the transition rod, two ends of the transition rod are fixedly connected with the two transmission pieces 75 respectively, the sliding block 76 is slidably installed in the lock hole 35, one end of the sliding block 76 is arranged outside the lock hole 35 and is connected with one end of the transmission piece 75 far away from the sliding rod 73, and the sliding rod 73 drives the sliding block 76 to slide along the lock hole 35 through the transmission piece. When the electromagnetic magnet 71 is not powered on, the magnet 72 and the sliding rod 73 move towards one end of the opening under the elastic force of the compression spring 74 to drive the transmission piece 75 to move, the transmission piece 75 drives the sliding block 76 to slide towards the deep part of the lock hole 35, if the lock hole 35 is aligned with the self-locking groove 34 at the moment, the inner end of the sliding block 76 directly enters the self-locking groove 34 to clamp the piston rod 33, and the self-locking of the lifting hydraulic cylinder 3 is realized; if the lock hole 35 is not aligned with the self-lock groove 34, the inner end of the slide block 76 abuts against the piston rod 33 and is connected with the piston rod 33 in a sliding manner, and when the piston rod 33 moves under the hydraulic action of the oil liquid, so that the lock hole 35 is aligned with the self-lock groove 34, the inner end of the slide block 76 enters the self-lock groove 34, and the piston 32 is blocked to realize self-locking of the lifting hydraulic cylinder 3. When the electromagnetic magnet 71 is powered on, the electromagnetic magnet 71 generates an attraction force on the magnet 72, the magnet 72 and the slide rod 73 move towards the electromagnetic magnet 71 under the action of the attraction force to drive the transmission piece 75 to move, the transmission piece 75 drives the slide block 76 to slide towards the outer side of the lock hole 35, the inner end of the slide block 76 is separated from the self-locking groove 34, and self-locking of the lifting hydraulic cylinder 3 is released.

Referring to fig. 3 and 4, the transmission member 75 includes a first link 751, a second link 752, one end of the first connecting rod 751 is fixedly connected with one end of the transition rod, the other end of the first connecting rod 751 is hinged with one end of the second connecting rod 752, the other end of the second connecting rod 752 is fixedly connected with one end of the third connecting rod 753, the third connecting rod 753 is rotatably connected with the outer wall of the cylinder body 31, one end of the fourth connecting rod 754 is fixed to the third connecting rod 753, the first connecting rod 751 is parallel to the sliding rod 73, the axial directions of the first connecting rod 751 and the second connecting rod 752 are not overlapped, the third connecting rod 753 is perpendicularly connected with the second connecting rod 752, the third connecting rod 753 is perpendicular to the first connecting rod 751, the fourth connecting rod 754 is perpendicular to the third connecting rod 753, the second connecting rod 752 is perpendicular to the fourth connecting rod 754, the fourth connecting rod 754 is located on the same side of the cylinder body 31 as the lock hole 35, and the fourth connecting rod 754 is located on one side of the opening of the cylinder body 31 close. A sliding groove is formed in one end, far away from the third connecting rod 753, of the fourth connecting rod 754, a connecting block is arranged at one end, located outside the lock hole 35, of the sliding block 76, and the connecting block is slidably mounted in the sliding groove.

Referring to fig. 1, 2, 6, 7 and 8, the connecting member 4 is a turning hydraulic cylinder, the structure of the turning hydraulic cylinder is the same as that of the lifting hydraulic cylinder 3, the turning hydraulic cylinder is provided with a turning self-locking mechanism, and the structure of the turning self-locking mechanism is the same as that of the lifting self-locking mechanism 7. When the three-dimensional parking device is required to be used for parking, the overturning hydraulic cylinder is controlled to extend to the length same as that of the large arm 2 and is locked, the parking platform 6 is converted into a horizontal state, and the lifting hydraulic cylinder 3 can drive the parking platform 6 to lift; when this sky parking device is in leisure, the shrink of upset pneumatic cylinder can be stood parking platform 6 rotation, reduces parking platform 6 and to the occupation in space.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. The utility model provides a do not have sky parking device of dodging which characterized in that: including base, big arm, lifting hydraulic cylinder, connecting piece, platform arm and parking platform, big arm, lifting hydraulic cylinder and connecting piece are all located on the base, the connecting piece is located the upside of big arm, lifting hydraulic cylinder locates the downside of big arm, the one end of big arm is articulated the base, the other end of big arm is articulated the lower extreme of platform arm, the one end of connecting piece articulate in the upper end of base, the other end of connecting piece articulate in the upper end of platform arm, big arm, base, connecting piece and platform arm are around constituteing a parallelogram mechanism, lifting hydraulic cylinder's one end is articulated the base, lifting hydraulic cylinder's the other end is articulated big arm, lifting hydraulic cylinder is last to install lifting self-locking mechanism, parking platform fixed connection the platform arm.

2. The avoidance-free three-dimensional parking device according to claim 1, wherein: the lifting hydraulic cylinder comprises a cylinder body, a piston and a piston rod, one end of the cylinder body is hinged to the base, a hydraulic cavity is arranged in the cylinder body, one end of the cylinder body, which is far away from the base, is provided with an opening communicated with the hydraulic cavity, the piston is slidably mounted in the hydraulic cavity, one end of the piston rod is fixed to the piston, the other end of the piston rod penetrates out of the opening, one end, which is close to the piston, of the piston rod is provided with a self-locking groove, one end, which is close to the opening, of the cylinder body is provided with a lock hole, and the lock hole.

3. The avoidance-free three-dimensional parking device according to claim 2, wherein: the lifting self-locking mechanism is arranged at one end of the cylinder body close to the opening and comprises an electromagnetic magnet, a slide rod, a transmission part and a slide block, the electromagnetic magnet is fixed on the outer wall of the cylinder body, the sliding rod is slidably arranged on the outer wall of the cylinder body, the magnet is fixed at one end of the sliding rod close to the electromagnetic attracting iron, the magnet and the electromagnetic attracting iron are arranged at intervals, a compression spring is arranged between the magnet and the electromagnetic magnet, one end of the sliding rod far away from the electromagnetic magnet is fixedly connected with one end of the transmission part, the sliding block is connected with the lock hole in a sliding mode, one end of the sliding block is sleeved in the self-locking groove, the other end of the sliding block is arranged outside the lock hole and connected with one end, far away from the sliding rod, of the transmission piece, and the sliding rod drives the sliding block to slide along the lock hole through the transmission piece.

4. The avoidance-free three-dimensional parking device according to claim 3, wherein: the transmission part comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, one end of the first connecting rod is fixedly connected with one end of the sliding rod far away from the electromagnetic magnet, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is fixedly connected with one end of the third connecting rod, the third connecting rod is rotatably connected with the outer wall of the cylinder body, one end of the fourth connecting rod is fixed on the third connecting rod, the fourth connecting rod and the lock hole are positioned at the same side of the cylinder body, the third connecting rod is arranged at one side of the lock hole close to the opening, one end of the fourth connecting rod far away from the third connecting rod is slidably connected with the sliding block, the length directions of the first connecting rod and the second connecting rod are different, the first connecting rod is parallel to the sliding rod, and the third connecting rod is vertically connected with the second connecting, the third connecting rod is perpendicular to the first connecting rod, the fourth connecting rod is perpendicular to the third connecting rod, and the second connecting rod is perpendicular to the fourth connecting rod.

5. The avoidance-free three-dimensional parking device according to claim 1, wherein: the upper surface of the parking platform is provided with two grooves used for limiting the movement of the front wheels.

6. The avoidance-free three-dimensional parking device according to claim 1, wherein: the base includes under bracing seat and last supporting seat, go up the supporting seat the lower extreme with the upper end fixed connection of under bracing seat, the under bracing seat buries in the underground, go up the supporting seat and locate the ground top, hydraulic lifting cylinder articulate in the lower extreme of going up the supporting seat.

7. The avoidance-free three-dimensional parking device according to claim 1, wherein: the connecting piece and the parking platform are respectively connected to two ends of the platform arm, and the large arm is connected to the middle of the platform arm.

8. The avoidance-free three-dimensional parking device according to claim 4, wherein: the connecting piece is a turnover hydraulic cylinder, the turnover hydraulic cylinder is provided with a turnover self-locking mechanism, the structure of the turnover hydraulic cylinder is the same as that of the lifting hydraulic cylinder, and the structure of the turnover self-locking mechanism is the same as that of the lifting self-locking mechanism.