A four-column double-deck parking lift

Abstract

The present invention relates to the technical field of lift machines, and particularly to a four-column double-layer parking lift machine, which includes a four-column support, an upper vehicle-carrying platform, a lower vehicle-carrying platform, and a hydraulic driving device. The four-column support is provided with four single columns, and each single column is provided with an outer sliding groove and an inner sliding groove that are parallel to each other. The lower vehicle-carrying platform includes a lower cross beam and a lower vehicle-supporting plate. The lower cross beam is slidably connected to the inner sliding groove and is driven by the hydraulic driving device to lift and lower. The upper vehicle-carrying platform includes an upper cross beam and an upper vehicle-supporting plate. The upper cross beam is slidably connected to the outer sliding groove. An upper vehicle plate assembly is installed on the lower cross beam. The upper vehicle plate assembly is provided with a receiving groove, and the upper cross beam can be embedded in the receiving groove. The upper vehicle-supporting plate wraps the lower vehicle-supporting plate. When the lower cross beam lifts and lowers, the upper vehicle plate assembly lifts and lowers synchronously and enables the upper cross beam to follow the lifting and lowering by means of the upper vehicle plate assembly. Through the above structural design, the upper vehicle-supporting plate and the lower vehicle-supporting plate share one upper vehicle plate assembly, reducing the manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of lifts, and particularly to a four-column double-layer parking lift. Background Art

[0002] Double-layer lifts are widely used in the fields of vehicle maintenance, inspection, and logistics warehousing. Their core function is to achieve multi-layer parking of vehicles through layered lifting. Existing double-layer lifts usually configure independent upper car plates for each layer of the vehicle lifting plate. Although it is convenient for vehicles to get on and off, the cost increases. At the same time, the vertical structure formed by the superposition of multiple upper car plates will generate a large step drop, and the vehicle chassis may be damaged due to the step drop when the vehicle drives in. In addition, in order to achieve double-layer lifting, the prior art generally adopts a double-column frame, that is, each column frame is dedicated to serving a single-layer vehicle lifting plate, and two sets of hydraulic drive systems are also required to drive the upper vehicle lifting plate and the lower vehicle lifting plate respectively. Although it ensures the independence of the movement of each layer of the vehicle lifting plate, it will cause the overall equipment to occupy a large space and the mechanical structure to be more complex. Therefore, it is necessary to improve the prior art to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a four-column double-layer parking lift, aiming to solve the problems in the prior art that the upper vehicle lifting plate and the lower vehicle lifting plate of the double-layer lift respectively adopt independent upper car plates, column frames, and hydraulic drive systems, resulting in increased costs and complex structures.

[0004] To achieve the above purpose, the present invention provides a four-column double-layer parking lift, including a four-column support, an upper vehicle-carrying platform, a lower vehicle-carrying platform, and a hydraulic drive device. The four-column support is provided with four single columns, and each single column is provided with an outer chute and an inner chute that are parallel to each other. The lower vehicle-carrying platform includes two front and rear lower crossbeams and a lower vehicle-supporting plate supported by the two lower crossbeams. The two ends of the lower crossbeam are slidably connected to the inner chute and are driven to lift by the hydraulic drive device. The upper vehicle-carrying platform includes two front and rear upper crossbeams and an upper vehicle-supporting plate supported by the two upper crossbeams. The two ends of the upper crossbeam are slidably connected to the outer chute;

[0005] An upper car plate assembly is installed on the front side of the lower crossbeam. The upper car plate assembly is provided with a receiving groove. The upper crossbeam can be inserted into the receiving groove from top to bottom. When the upper crossbeam is inserted into the receiving groove, the upper vehicle-supporting plate wraps the lower vehicle-supporting plate from top to bottom. When the lower crossbeam lifts or lowers, the upper car plate assembly synchronously lifts or lowers and enables the upper crossbeam to follow the lift or lower with the help of the upper car plate assembly;

[0006] An upper safety lock mechanism for locking the upper crossbeam at the top of the single column is provided between the single column and the upper crossbeam, and a lower safety lock mechanism for locking the lower crossbeam in the middle of the single column is provided between the single column and the lower crossbeam.

[0007] Further, the boarding plate assembly includes a first boarding plate, a sliding pin, and a cover plate. The receiving groove is provided in the first boarding plate. A sliding through groove is provided on the side surface of the first boarding plate, and a perforation is provided on the side surface of the cover plate. The sliding pin passes through the sliding through groove and the perforation. By sliding the sliding pin in the sliding through groove to change the placement mode of the cover plate, the cover plate can be in a first state, a second state, and a third state;

[0008] When the cover plate is in the first state, the cover plate leaves the receiving groove to open the upper part of the receiving groove, and the upper cross beam can be inserted into the receiving groove from top to bottom;

[0009] When the cover plate is in the second state, the cover plate can cover the receiving groove;

[0010] When the cover plate is in the third state, the cover plate can be in a standing state.

[0011] Further, the first boarding plate includes a boarding ramp connected to the front of the receiving groove, a mounting flat plate connected to the rear of the receiving groove, and boarding side plates connected to both sides of the boarding ramp. The sliding through groove is provided in the boarding side plates. The mounting flat plate is used to connect to the lower cross beam. The sliding through groove includes a first sliding section, a second sliding section, a third sliding section, and a fourth sliding section that are sequentially connected. The front end of the first sliding section is the first positioning point, the intersection point of the second sliding section and the third sliding section is the second positioning point, and the rear end of the fourth sliding section is the third positioning point. The line connecting the first positioning point and the second positioning point is parallel to the boarding ramp; the cover plate includes a shielding plate and connecting side plates connected to both sides of the shielding plate. The perforation is provided in the connecting side plates;

[0012] In the first state, the sliding pin slides to the first positioning point, the bottom surface of the shielding plate fits against the top surface of the boarding ramp and the rear edge of the shielding plate does not extend above the receiving groove;

[0013] In the second state, the sliding pin slides to the second positioning point, the front edge of the shielding plate overlaps the boarding ramp, and the rear edge of the shielding plate overlaps the mounting flat plate;

[0014] In the third state, the sliding pin slides to the third positioning point, the shielding plate is placed with the front edge below and the rear edge above, the front edge of the shielding plate is supported by the boarding ramp and the overall center of gravity of the shielding plate is further forward than the front edge.

[0015] Further, taking the first positioning point as the coordinate origin to establish a rectangular coordinate system, the horizontal plane is the X direction, the vertical plane is the Y direction. The first sliding section extends along the inclined direction between the positive X-axis direction and the positive Y-axis direction, the second sliding section extends along the inclined direction between the negative Y-axis direction and the positive X-axis direction, the third sliding section extends along the inclined direction between the positive X-axis direction and the positive Y-axis direction, and the fourth sliding section extends upward along the positive Y-axis direction.

[0016] Further, a handle is provided on the connecting side plate.

[0017] Further, the upper boarding plate assembly further includes a second upper boarding plate. The second upper boarding plate is hingedly connected to the first upper boarding plate through a connecting shaft. The second upper boarding plate can rotate around the axis of the connecting shaft so that the top surface of the second upper boarding plate fits with the top surface of the first upper boarding plate.

[0018] Further, the upper safety lock mechanism includes a primary safety lock assembly and a secondary safety lock assembly. The primary safety lock assembly is disposed on the upper cross beam, and the secondary safety lock assembly is disposed on the single column. The single column is provided with a primary lock hole, the upper cross beam is provided with a primary lock seat, and the primary lock seat is provided with a secondary lock ear;

[0019] When the primary safety lock assembly is inserted into the primary lock hole and the secondary safety lock assembly hooks the secondary lock ear, the upper vehicle-carrying platform is in the locked state;

[0020] When the primary safety lock assembly disengages from the primary lock hole and the secondary safety lock assembly disengages from the secondary lock ear, the upper vehicle-carrying platform is in the unlocked state.

[0021] Further, the primary safety lock assembly includes a primary cylinder, a primary connecting block, and a primary stop block. The fixed end of the primary cylinder is hinged to the primary lock seat. A part of the primary stop block is hinged to the primary lock seat, and a part is hinged to the telescopic end of the primary cylinder through the primary connecting block. The primary stop block can be driven by the primary cylinder to insert into or disengage from the primary lock hole;

[0022] The secondary safety lock assembly includes a secondary cylinder, a secondary connecting block, a secondary bolt, and a secondary stop block. The single column is provided with a secondary lock seat. The fixed end of the secondary cylinder is hinged to the secondary lock seat. A part of the secondary stop block is hinged to the secondary lock seat through the secondary bolt, and a part is hinged to the telescopic end of the secondary cylinder through the secondary connecting block. The secondary stop block can be driven by the secondary cylinder to hook or disengage from the secondary lock ear.

[0023] Further, the upper cross beam is provided with a transition plate. When the upper cross beam is inserted into the receiving groove, the transition plate can cover the receiving groove.

[0024] Further, this four-column double-layer parking lift can park three cars;

[0025] Before parking the first car, the upper cross beam and the lower cross beam are at the lowest position. At this time, the upper cross beam is located in the receiving groove, and the cover plate is in the first state. Subsequently, the first car drives into the upper vehicle-carrying platform, and the cover plate changes to the third state. The hydraulic drive device drives the lower cross beam to rise, and at the same time the upper cross beam follows the lifting until the upper cross beam is locked by the upper safety lock mechanism at the top of the single column to complete the parking of the first car;

[0026] Before parking the second car, the hydraulic drive device drives the lower cross beam to descend to the lowest position, the cover plate changes to the second state, and then the second car drives into the lower car-carrying platform. The cover plate changes to the third state, and the hydraulic drive device drives the lower cross beam to rise until the lower cross beam is locked in the lower safety lock mechanism in the middle of the single column to complete the parking of the second car;

[0027] Before parking the third car, the first car and the second car have been parked, and the third car drives in directly to complete the parking of the third car.

[0028] Compared with the prior art, the four-column double-deck parking lift provided by the present invention, through the above structural design, the upper car-carrying plate and the lower car-carrying plate share one upper car plate assembly, which not only reduces the manufacturing cost, but also eliminates the step drop formed by the superposition of multiple upper car plates, thus avoiding damage to the vehicle chassis. At the same time, through the outer chute, inner chute and hydraulic drive device of the single column, the lifting of the upper car-carrying plate and the lower car-carrying plate can be realized, which not only simplifies the overall structure, but also reduces the floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 ;

[0030] Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 ;

[0031] Figure 3 is a schematic three-dimensional structure diagram during the boarding process of the present invention;

[0032] Figure 4 is a schematic three-dimensional structure diagram after parking three cars of the present invention;

[0033] Figure 5 is a schematic three-dimensional structure diagram when the upper cross beam is located in the receiving groove;

[0034] Figure 6 is a schematic three-dimensional structure diagram after the upper cross beam leaves the receiving groove;

[0035] Figure 7 is a schematic three-dimensional structure diagram when the cover plate is in the first state;

[0036] Figure 8 is a schematic three-dimensional structure diagram when the cover plate is in the second state;

[0037] Figure 9 is a schematic three-dimensional structure diagram when the cover plate is in the third state;

[0038] Figure 10 is an exploded view of the upper car plate assembly;

[0039] Figure 11 is the front view of the boarding plate assembly;

[0040] Figure 12 is Figure 11 the enlarged structural schematic diagram of part A in

[0041] Figure 13 the three-dimensional structural schematic diagram when the second boarding plate is flipped to the first boarding plate;

[0042] Figure 14 is the three-dimensional structural schematic diagram when the upper cross beam is in the locked state;

[0043] Figure 15 is the three-dimensional structural schematic diagram when the upper cross beam is in the unlocked state;

[0044] Figure 16 is the exploded view of the upper safety lock mechanism.

[0045] Description of the reference numerals:

[0046] 1. Four-column support; 11. Single column; 111. Outer sliding groove; 112. Inner sliding groove; 113. First-level lock hole; 114. Second-level lock seat;

[0047] 2. Upper vehicle-carrying platform; 20. Upper vehicle-carrying plate; 21. Upper cross beam; 211. First-level lock seat; 212. Second-level lock ear; 22. Upper safety lock mechanism; 221. First-level safety lock assembly; 2211. First-level cylinder; 2212. First-level connecting block; 2213. First-level stop block; 222. Second-level safety lock assembly; 2221. Second-level cylinder; 2222. Second-level connecting block; 2223. Second-level plug pin; 2224. Second-level stop block; 23. Transition plate;

[0048] 3. Lower vehicle-carrying platform; 30. Lower vehicle-carrying plate; 31. Lower cross beam; 32. Lower safety lock mechanism;

[0049] 4. Hydraulic drive device;

[0050] 5. Boarding plate assembly; 51. First boarding plate; 510. Accommodating groove; 511. Sliding through groove; 5111. First sliding section; 5112. Second sliding section; 5113. Third sliding section; 5114. Fourth sliding section; 5115. First positioning point; 5116. Second positioning point; 5117. Third positioning point; 512. Boarding ramp; 513. Installation flat plate; 514. Boarding side plate; 52. Sliding pin; 53. Cover plate; 531. Perforation; 532. Shielding plate; 533. Connecting side plate; 534. Handle; 54. Second boarding plate; 55. Connecting shaft. Detailed implementation manners

[0051] The present invention will be described in detail below in conjunction with specific embodiments.

[0052] In the present invention, unless otherwise clearly specified and defined, when terms such as "arranged on", "connected", "linked" appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be directly connected or connected through one or more intermediate media. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. For the direction words in the present invention, they are for better explaining the characteristics of the features and the relationships between the features. It should be understood that when the placement direction of the present invention changes, the direction of the characteristics of the features and the relationships between the features also changes accordingly. Therefore, the direction words do not constitute an absolute limiting effect on the characteristics of the features and the relationships between the features in space, but only play a relative limiting role.

[0053] The present invention provides a four-column double-layer parking lift, as Figures 1 to 16 shown, which includes a four-column support 1, an upper car-carrying platform 2, a lower car-carrying platform 3 and a hydraulic drive device 4. The four-column support 1 is provided with four single columns 11, and each single column 11 is provided with an outer chute 111 and an inner chute 112 that are parallel to each other. The lower car-carrying platform 3 includes two front and rear lower cross beams 31 and a lower car-carrying plate 30 supported by the two lower cross beams 31. The two ends of the lower cross beam 31 are slidably connected to the inner chute 112 and are driven by the hydraulic drive device 4 to lift and lower. The upper car-carrying platform 2 includes two front and rear upper cross beams 21 and an upper car-carrying plate 20 supported by the two upper cross beams 21. The two ends of the upper cross beam 21 are slidably connected to the outer chute 111; through the outer chute 111, the inner chute 112 of the single column 11 and the hydraulic drive device 4, the lifting and lowering of the upper car-carrying plate 20 and the lower car-carrying plate 30 can be realized, which not only simplifies the overall structure but also reduces the floor space.

[0054] An upper car plate assembly 5 is installed on the front side of the lower cross beam 31. The upper car plate assembly 5 is provided with a receiving groove 510. The upper cross beam 21 can be inserted into the receiving groove 510 from top to bottom. When the upper cross beam 21 is inserted into the receiving groove 510, the upper car-carrying plate 20 wraps the lower car-carrying plate 30 from top to bottom. Specifically, the cross-sections of the upper car-carrying plate 20 and the lower car-carrying plate 30 are both channel-shaped, and the width of the upper car-carrying plate 20 is greater than the width of the lower car-carrying plate 30, so that the upper car-carrying plate 20 can wrap the lower car-carrying plate 30. At the same time, the processing of the channel-shaped upper car-carrying plate 20 and the lower car-carrying plate 30 is more convenient and the cost is lower; when the lower cross beam 31 lifts and lowers, the upper car plate assembly 5 lifts and lowers synchronously and the upper cross beam 21 is made to follow the lifting and lowering by means of the upper car plate assembly 5;

[0055] An upper safety lock mechanism 22 for locking the upper cross beam 21 to the top of the single column 11 is provided between the single column 11 and the upper cross beam 21, and a lower safety lock mechanism 32 for locking the lower cross beam 31 to the middle of the single column 11 is provided between the single column 11 and the lower cross beam 31. The lower safety lock mechanism 32 is a two-stage safety lock mechanism, which realizes the instantaneous locking of the steel wire rope through two methods of mechanical insurance and circuit insurance, so as to lock the lower cross beam 31. The lower safety lock mechanism 32 is a prior art, and its structure and working principle will not be described in detail in this application.

[0056] Based on the above structural design, the upper car-carrying plate 20 and the lower car-carrying plate 30 share a car boarding plate assembly 5, which not only reduces the manufacturing cost, but also eliminates the step drop formed by the superposition of multiple car boarding plates, thus avoiding damage to the vehicle chassis and ensuring smooth driving of the vehicle onto any layer.

[0057] In this embodiment, as Figures 7 to 9 shown, the car boarding plate assembly 5 includes a first car boarding plate 51, a sliding pin 52 and a cover plate 53. A receiving groove 510 is provided on the first car boarding plate 51, a sliding through groove 511 is provided on the side of the first car boarding plate 51, a through hole 531 is provided on the side of the cover plate 53, and the sliding pin 52 passes through the sliding through groove 511 and the through hole 531. By sliding the sliding pin 52 in the sliding through groove 511 to change the placement method of the cover plate 53, the cover plate 53 can be in a first state, a second state and a third state;

[0058] When the cover plate 53 is in the first state, the cover plate 53 leaves the receiving groove 510 to open the upper part of the receiving groove 510, and the upper cross beam 21 can be inserted into the receiving groove 510 from top to bottom;

[0059] When the cover plate 53 is in the second state, the cover plate 53 can cover the receiving groove 510;

[0060] When the cover plate 53 is in the third state, the cover plate 53 can be in a standing state.

[0061] Through the above structural design, when parking the first vehicle, the cover plate 53 is in the first state, and the upper car-carrying plate 20 and the lower car-carrying plate 30 share a car boarding plate assembly 5, thus reducing the cost; when parking the second vehicle, the cover plate 53 is in the second state, which can effectively prevent the wheels from getting stuck, slipping or even tipping over at the receiving groove 510 when the second vehicle drives onto the lower car-carrying plate 30, improving the stability of getting on the vehicle; when the second vehicle is parked or during the lifting and lowering of the lower cross beam 31, the cover plate 53 is in the third state, which can play a role in stopping the wheels and reducing the risk of the vehicle sliding or rolling back, thus protecting the safety of the vehicle, passengers and the surrounding environment.

[0062] In this embodiment, asFigures 7 to 11 As shown, the first boarding plate 51 includes a boarding ramp 512 connected to the front of the accommodation groove 510, a mounting flat plate 513 connected to the rear of the accommodation groove 510, and boarding side plates 514 connected to both sides of the boarding ramp 512. A sliding through groove 511 is provided on the boarding side plates 514. The mounting flat plate 513 is used to connect to the lower cross beam 31. The sliding through groove 511 includes a first sliding section 5111, a second sliding section 5112, a third sliding section 5113, and a fourth sliding section 5114 that are sequentially connected. The front end of the first sliding section 5111 is the first positioning point 5115, the intersection point of the second sliding section 5112 and the third sliding section 5113 is the second positioning point 5116, and the rear end of the fourth sliding section 5114 is the third positioning point 5117. The line connecting the first positioning point 5115 and the second positioning point 5116 is parallel to the boarding ramp 512. The cover plate 53 includes a shielding plate 532 and connecting side plates 533 connected to both sides of the shielding plate 532. A perforation 531 is provided on the connecting side plates 533;

[0063] In the first state, the sliding pin 52 slides to the first positioning point 5115. The bottom surface of the shielding plate 532 fits against the top surface of the boarding ramp 512 and the rear edge of the shielding plate 532 does not extend above the accommodation groove 510, ensuring that the shielding plate 532 does not block the accommodation groove 510, so that the upper cross beam 21 can be smoothly inserted into the accommodation groove 510;

[0064] In the second state, the sliding pin 52 slides to the second positioning point 5116. The front edge of the shielding plate 532 overlaps the boarding ramp 512, and the rear edge of the shielding plate 532 overlaps the mounting flat plate 513. Supported by the boarding ramp 512 and the mounting flat plate 513 together, it can prevent the shielding plate 532 from falling into the accommodation groove 510, improving the stability of boarding;

[0065] In the third state, the sliding pin 52 slides to the third positioning point 5117. The shielding plate 532 is placed with its front edge at the bottom and rear edge at the top. The front edge of the shielding plate 532 is supported by the boarding ramp 512 and the overall center of gravity of the shielding plate 532 is further forward than the front edge, thus ensuring that the sliding pin 52 does not disengage from the third positioning point 5117, serving as a stop for the wheel.

[0066] In this embodiment, as Figure 12As shown, a rectangular coordinate system is established with the first positioning point 5115 as the coordinate origin, the horizontal plane as the X direction, and the vertical plane as the Y direction. The first sliding section 5111 extends along the inclined direction between the positive X-axis direction and the positive Y-axis direction, the second sliding section 5112 extends along the inclined direction between the negative Y-axis direction and the positive X-axis direction, the third sliding section 5113 extends along the inclined direction between the positive X-axis direction and the positive Y-axis direction, and the fourth sliding section 5114 extends upward along the positive Y-axis direction. Through the multi-segment groove trend of the above-mentioned sliding through groove 511, three different placement methods of the cover plate 53 are realized to meet various usage requirements.

[0067] In this embodiment, as Figure 10 shown, the connecting side plate 533 is provided with a handle 534, which is convenient for the operator to adjust the placement method of the cover plate 53 and reduces the operation difficulty.

[0068] In this embodiment, as Figure 13 shown, the upper car body assembly 5 further includes a second upper car body 54. The second upper car body 54 is hinged to the first upper car body 51 through a coupling shaft 55. The second upper car body 54 can rotate around the axis of the coupling shaft 55 so that the top surface of the second upper car body 54 fits with the top surface of the first upper car body 51. When the lower car carrier plate 30 parks the vehicle, the second upper car body 54 can be manually flipped onto the first upper car body 51, thereby reducing the suspended length of the upper car body assembly 5 and avoiding space limitation due to the excessive length of the upper car body assembly 5.

[0069] In this embodiment, as Figures 14 to 16 shown, the upper safety lock mechanism 22 includes a primary safety lock assembly 221 and a secondary safety lock assembly 222. The primary safety lock assembly 221 is arranged on the upper cross beam 21, the secondary safety lock assembly 222 is arranged on the single column 11. The single column 11 is provided with a primary lock hole 113, the upper cross beam 21 is provided with a primary lock seat 211, and the primary lock seat 211 is provided with a secondary lock ear 212;

[0070] When the primary safety lock assembly 221 is inserted into the primary lock hole 113 and the secondary safety lock assembly 222 hooks the secondary lock ear 212, the upper vehicle loading platform 2 is in the locked state;

[0071] When the primary safety lock assembly 221 disengages from the primary lock hole 113 and the secondary safety lock assembly 222 disengages from the secondary lock ear 212, the upper vehicle loading platform 2 is in the unlocked state.

[0072] Through the above structural design, the upper safety lock mechanism 22 adopts a dual safety lock design. Even if the primary safety lock assembly 221 fails, the secondary safety lock assembly 222 can still play a role to ensure the safety of the vehicle and effectively prevent accidental unlocking or starting of the vehicle due to misoperation.

[0073] In this embodiment, as Figures 14 to 16 shown, the primary safety lock assembly 221 includes a primary cylinder 2211, a primary connection block 2212, and a primary stop block 2213. The fixed end of the primary cylinder 2211 is hinged to the primary lock base 211. A part of the primary stop block 2213 is hinged to the primary lock base 211, and a part is hinged to the telescopic end of the primary cylinder 2211 through the primary connection block 2212. The primary stop block 2213 can be driven by the primary cylinder 2211 to insert into or disengage from the primary lock hole 113. The secondary safety lock assembly 222 includes a secondary cylinder 2221, a secondary connection block 2222, a secondary bolt 2223, and a secondary stop block 2224. The single column 11 is provided with a secondary lock base 114. The fixed end of the secondary cylinder 2221 is hinged to the secondary lock base 114. A part of the secondary stop block 2224 is hinged to the secondary lock base 114 through the secondary bolt 2223, and a part is hinged to the telescopic end of the secondary cylinder 2221 through the secondary connection block 2222. The secondary stop block 2224 can be driven by the secondary cylinder 2221 to hook or disengage from the secondary lock lug 212.

[0074] Through the above structural design, when unlocking is required, the primary cylinder 2211 drives the primary stop block 2213 to rotate, so that the primary stop block 2213 disengages from the primary lock hole 113, that is, the primary unlocking is completed. The secondary cylinder 2221 drives the secondary stop block 2224 to rotate, so that the secondary stop block 2224 disengages from the secondary lock lug 212, that is, the secondary unlocking is completed, thereby completely unlocking the upper cross beam 21.

[0075] In this embodiment, as Figures 5 to 6 shown, the upper cross beam 21 is provided with a transition plate 23. When the upper cross beam 21 is embedded in the receiving groove 510, the transition plate 23 can cover the receiving groove 510, facilitating the vehicle to drive onto the upper car carrier plate 20 and reducing the passing difficulty.

[0076] In this embodiment, as Figures 3 to 4 shown, this four-column double-layer parking lift can park three vehicles;

[0077] Before parking the first vehicle, the upper cross beam 21 and the lower cross beam 31 are at the lowest position. At this time, the upper cross beam 21 is located in the receiving groove 510, and the cover plate 53 is in the first state. Subsequently, the first vehicle drives onto the upper car carrier platform 2, and the cover plate 53 changes to the third state. The hydraulic drive device 4 drives the lower cross beam 31 to rise, and at the same time, the upper cross beam 21 follows the lifting until the upper cross beam 21 is locked by the upper safety lock mechanism 22 at the top of the single column 11 to complete the parking of the first vehicle;

[0078] Before parking the second vehicle, the hydraulic drive device 4 drives the lower cross beam 31 to descend to the lowest position, the cover plate 53 changes to the second state, and then the second vehicle drives into the lower vehicle-carrying platform 3. The cover plate 53 changes to the third state, and the hydraulic drive device 4 drives the lower cross beam 31 to rise until the lower cross beam 31 is locked in the lower safety lock mechanism 32 in the middle of the single column 11 to complete the parking of the second vehicle;

[0079] Before parking the third vehicle, the first vehicle and the second vehicle have been parked, and the third vehicle drives in directly to complete the parking of the third vehicle.

[0080] In summary, this four-column double-deck parking lift can solve the problems in the prior art that the upper car top plate and the lower car top plate of the double-deck lift respectively adopt independent upper car plates, column frames and hydraulic drive systems, resulting in increased costs and complex structures.

[0081] Without conflict, the above embodiments and the features in the embodiments can be combined with each other.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A four-column double-deck parking lift, characterized in that: It includes a four-column support (1), an upper vehicle-carrying platform (2), a lower vehicle-carrying platform (3), and a hydraulic driving device (4). The four-column support (1) is provided with four single columns (11), and each single column (11) is provided with an outer sliding groove (111) and an inner sliding groove (112) that are parallel to each other. The lower vehicle-carrying platform (3) includes two front and rear lower cross beams (31) and a lower vehicle-supporting plate (30) supported by the two lower cross beams (31). The two ends of the lower cross beam (31) are slidably connected to the inner sliding groove (112) and are driven to lift by the hydraulic driving device (4). The upper vehicle-carrying platform (2) includes two front and rear upper cross beams (21) and an upper vehicle-supporting plate (20) supported by the two upper cross beams (21). The two ends of the upper cross beam (21) are slidably connected to the outer sliding groove (111); An upper boarding plate assembly (5) is installed on the front side of the lower cross beam (31). The upper boarding plate assembly (5) is provided with a receiving groove (510). The upper cross beam (21) can be inserted into the receiving groove (510) from top to bottom. When the upper cross beam (21) is inserted into the receiving groove (510), the upper vehicle-supporting plate (20) wraps the lower vehicle-supporting plate (30) from top to bottom. When the lower cross beam (31) lifts, the upper boarding plate assembly (5) lifts synchronously and the upper cross beam (21) is made to follow the lift by means of the upper boarding plate assembly (5); An upper safety lock mechanism (22) for locking the upper cross beam (21) at the top of the single column (11) is provided between the single column (11) and the upper cross beam (21), and a lower safety lock mechanism (32) for locking the lower cross beam (31) in the middle of the single column (11) is provided between the single column (11) and the lower cross beam (31); The boarding plate assembly (5) includes a first boarding plate (51), a sliding pin (52), and a cover plate (53). A receiving groove (510) is provided on the first boarding plate (51). A sliding through groove (511) is provided on the side surface of the first boarding plate (51). A through hole (531) is provided on the side surface of the cover plate (53). The sliding pin (52) passes through the sliding through groove (511) and the through hole (531). By sliding the sliding pin (52) in the sliding through groove (511) to change the placement mode of the cover plate (53), the cover plate (53) can be in a first state, a second state, and a third state. The first boarding plate (51) includes a boarding inclined plate (512) connected in front of the receiving groove (510), a mounting flat plate (513) connected behind the receiving groove (510), and boarding side plates (514) connected to both sides of the boarding inclined plate (512). The sliding through groove (511) is provided on the boarding side plates (514). The mounting flat plate (513) is used to connect to the lower cross beam (31). The sliding through groove (511) includes a first sliding section (5111), a second sliding section (5112), a third sliding section (5113), and a fourth sliding section (5114) that are sequentially connected. The front end of the first sliding section (5111) is a first positioning point (5115). The intersection point of the second sliding section (5112) and the third sliding section (5113) is a second positioning point (5116). The rear end of the fourth sliding section (5114) is a third positioning point (5117). The line connecting the first positioning point (5115) and the second positioning point (5116) is parallel to the boarding inclined plate (512). The cover plate (53) includes a shielding plate (532) and connecting side plates (533) connected to both sides of the shielding plate (532). The through hole (531) is provided on the connecting side plates (533). When the cover plate (53) is in the first state, the cover plate (53) leaves the receiving groove (510) to open the upper part of the receiving groove (510), and the upper cross beam (21) can be inserted into the receiving groove (510) from top to bottom. When the cover plate (53) is in the second state, the cover plate (53) can cover the receiving groove (510). When the cover plate (53) is in the third state, the cover plate (53) can be in a standing state.

2. The four-column double-layer parking lift according to claim 1, characterized in that: In the first state, the sliding pin (52) slides to the first positioning point (5115), the bottom surface of the shielding plate (532) fits with the top surface of the boarding inclined plate (512), and the rear edge of the shielding plate (532) does not extend above the receiving groove (510). In the second state, the sliding pin (52) slides to the second positioning point (5116), the front edge of the shielding plate (532) overlaps on the boarding inclined plate (512), and the rear edge of the shielding plate (532) overlaps on the mounting flat plate (513). In the third state, the sliding pin (52) slides to the third positioning point (5117), the baffle plate (532) is placed with its front edge at the lower position and its rear edge at the upper position, the front edge of the baffle plate (532) is supported by the upper vehicle ramp (512), and the overall center of gravity of the baffle plate (532) is further forward than the front edge.

3. The four-column double-deck parking lift according to claim 2, characterized in that: Taking the first positioning point (5115) as the origin of the rectangular coordinate system, the horizontal plane is the X direction, the vertical plane is the Y direction, the first sliding section (5111) extends along the inclined direction between the positive X-axis direction and the positive Y-axis direction, the second sliding section (5112) extends along the inclined direction between the negative Y-axis direction and the positive X-axis direction, the third sliding section (5113) extends along the inclined direction between the positive X-axis direction and the positive Y-axis direction, and the fourth sliding section (5114) extends upward along the positive Y-axis direction.

4. The four-column double-deck parking lift according to claim 2, characterized in that: The connecting side plate (533) is provided with a handle (534).

5. The four-column double-deck parking lift according to claim 1, characterized in that: The upper vehicle board assembly (5) further includes a second upper vehicle board (54), the second upper vehicle board (54) is hingedly connected to the first upper vehicle board (51) through a coupling shaft (55), and the second upper vehicle board (54) can rotate around the axis of the coupling shaft (55) so that the top surface of the second upper vehicle board (54) fits with the top surface of the first upper vehicle board (51).

6. The four-column double-deck parking lift according to claim 1, characterized in that: The upper safety lock mechanism (22) includes a primary safety lock assembly (221) and a secondary safety lock assembly (222). The primary safety lock assembly (221) is arranged on the upper cross beam (21), the secondary safety lock assembly (222) is arranged on the single column (11), the single column (11) is provided with a primary lock hole (113), the upper cross beam (21) is provided with a primary lock seat (211), and the primary lock seat (211) is provided with a secondary lock ear (212). When the primary safety lock assembly (221) is inserted into the primary lock hole (113) and the secondary safety lock assembly (222) hooks the secondary lock ear (212), the upper vehicle loading platform (2) is in the locked state. When the primary safety lock assembly (221) disengages from the primary lock hole (113) and the secondary safety lock assembly (222) disengages from the secondary lock ear (212), the upper vehicle loading platform (2) is in the unlocked state.

7. The four-column double-layer parking lift according to claim 6, characterized in that: The primary safety lock assembly (221) includes a primary cylinder (2211), a primary connecting block (2212), and a primary stop block (2213). The fixed end of the primary cylinder (2211) is hinged to the primary lock seat (211), a part of the primary stop block (2213) is hinged to the primary lock seat (211), and a part is hinged to the telescopic end of the primary cylinder (2211) through the primary connecting block (2212). The primary stop block (2213) can be driven by the primary cylinder (2211) to insert into or disengage from the primary lock hole (113). The secondary safety lock assembly (222) includes a secondary cylinder (2221), a secondary connecting block (2222), a secondary bolt (2223) and a secondary stop block (2224). The single vertical column (11) is provided with a secondary lock seat (114). The fixed end of the secondary cylinder (2221) is hinged to the secondary lock seat (114). A part of the secondary stop block (2224) is hinged to the secondary lock seat (114) through the secondary bolt (2223), and a part is hinged to the telescopic end of the secondary cylinder (2221) through the secondary connecting block (2222). The secondary stop block (2224) can be driven by the secondary cylinder (2221) to hook or disengage from the secondary lock ear (212).

8. The four-column double-deck parking lift according to claim 1, characterized in that: The upper cross beam (21) is provided with a transition plate (23). When the upper cross beam (21) is embedded in the accommodation groove (510), the transition plate (23) can cover the accommodation groove (510).

9. The four-column double-layer parking lift according to any one of claims 1 to 3, characterized in that: This four-column double-deck parking lift can park three cars; Before parking the first car, the upper cross beam (21) and the lower cross beam (31) are at the lowest position. At this time, the upper cross beam (21) is located in the accommodation groove (510), and the cover plate (53) is in the first state. Subsequently, the first car drives into the upper car-carrying platform (2), the cover plate (53) changes to the third state, and the hydraulic drive device (4) drives the lower cross beam (31) to rise. At the same time, the upper cross beam (21) follows the lifting until the upper cross beam (21) is locked by the upper safety lock mechanism (22) at the top of the single vertical column (11) to complete the parking of the first car; Before parking the second car, the hydraulic drive device (4) drives the lower cross beam (31) to descend to the lowest position, the cover plate (53) changes to the second state. Subsequently, the second car drives into the lower car-carrying platform (3), the cover plate (53) changes to the third state, and the hydraulic drive device (4) drives the lower cross beam (31) to rise until the lower cross beam (31) is locked by the lower safety lock mechanism (32) in the middle of the single vertical column (11) to complete the parking of the second car; Before parking the third car, the first car and the second car have been parked. The third car drives in directly to complete the parking of the third car.

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