Four-column type double-layer parking lifting machine

Abstract

The invention relates to the technical field of lifting machines, in particular to a four-column type double-layer parking lifting machine which comprises a four-column type support, an upper-layer vehicle carrying platform, a lower-layer vehicle carrying platform and a hydraulic driving device, the four-column type support is provided with four single columns, and each single column is provided with an outer sliding groove and an inner sliding groove which are parallel to each other; the lower-layer vehicle carrying platform comprises a lower-layer cross beam and a lower-layer vehicle supporting plate, the lower-layer cross beam is slidably connected to the inner sliding groove and is driven by a hydraulic driving device to ascend and descend, the upper-layer vehicle carrying platform comprises an upper-layer cross beam and an upper-layer vehicle supporting plate, and the upper-layer cross beam is slidably connected to the outer sliding groove; the lower-layer cross beam is provided with an upper vehicle loading plate assembly, the upper-layer cross beam is provided with a containing groove, the upper-layer cross beam can be embedded into the containing groove, the upper-layer vehicle supporting plate wraps the lower-layer vehicle supporting plate, and when the lower-layer cross beam ascends and descends, the upper vehicle loading plate assembly ascends and descends synchronously, and the upper-layer cross beam ascends and descends along with the upper vehicle loading plate assembly. By means of the structural design, the upper-layer car supporting plate and the lower-layer car supporting plate share one upper car supporting plate assembly, and the manufacturing cost is reduced.

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 automobile maintenance, inspection and logistics warehousing. Their core function is to achieve multi-layer parking of automobiles through layered lifting. Existing double-layer lifts usually configure independent upper car plates for each layer of the car-lifting plates. Although it is convenient for the upper and lower operations of automobiles, 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 chassis of the automobile may be damaged due to the step drop when the automobile 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 specifically serves a single-layer car-lifting plate, and two sets of hydraulic drive systems are also required to drive the upper car-lifting plate and the lower car-lifting plate respectively. Although the independence of the movement of each layer of the car-lifting plate is ensured, 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 car-lifting plate and the lower car-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 car-carrying platform, a lower car-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 car-carrying platform includes two front and rear lower cross beams and a lower car-carrying plate supported by the two lower cross beams. The two ends of the lower cross beam are slidably connected to the inner chute and are driven to lift by the hydraulic drive device. The upper car-carrying platform includes two front and rear upper cross beams and an upper car-carrying plate supported by the two upper cross beams. The two ends of the upper cross beam are slidably connected to the outer chute; An upper car plate assembly is installed on the front side of the lower cross beam. The upper car plate assembly is provided with a receiving groove, and the upper cross beam can be inserted into the receiving groove from top to bottom. When the upper cross beam is inserted into the receiving groove, the upper car-carrying plate wraps the lower car-carrying plate from top to bottom. When the lower cross beam lifts, the upper car plate assembly lifts synchronously and the upper cross beam is driven to lift by means of the upper car plate assembly; An upper safety lock mechanism for locking the upper cross beam at the top of the single column is arranged between the single column and the upper cross beam, and a lower safety lock mechanism for locking the lower cross beam in the middle of the single column is arranged between the single column and the lower cross beam.

[0005] 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 of the first boarding plate, and a perforation is provided on the side 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; 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; When the cover plate is in the second state, the cover plate can cover the receiving groove; When the cover plate is in the third state, the cover plate can be in a standing state.

[0006] 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; 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; 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; 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.

[0007] Further, taking the first positioning point 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 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.

[0008] Further, a handle is provided on the connecting side plate.

[0009] Further, the boarding plate assembly further includes a second boarding plate. The second boarding plate is hinged to the first boarding plate through a connecting shaft, and the second boarding plate can rotate around the axis of the connecting shaft so that the top surface of the second boarding plate fits with the top surface of the first boarding plate.

[0010] 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 locking lug; When the primary safety lock assembly is inserted into the primary lock hole and the secondary safety lock assembly hooks the secondary locking lug, the upper vehicle-carrying platform is in the locked state; When the primary safety lock assembly disengages from the primary lock hole and the secondary safety lock assembly disengages from the secondary locking lug, the upper vehicle-carrying platform is in the unlocked state.

[0011] Further, the primary safety lock assembly includes a primary cylinder, a primary connecting block, and a primary stopper. The fixed end of the primary cylinder is hinged to the primary lock seat. A part of the primary stopper 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 stopper can be driven by the primary cylinder to insert into or disengage from the primary lock hole; The secondary safety lock assembly includes a secondary cylinder, a secondary connecting block, a secondary bolt, and a secondary stopper. 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 stopper 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 stopper can be driven by the secondary cylinder to hook or disengage from the secondary locking lug.

[0012] 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.

[0013] Further, this four-column double-deck parking lift can park three cars; 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, the cover plate changes to the third state, and the hydraulic driving device drives the lower cross beam to rise. 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; Before parking the second car, the hydraulic driving device drives the lower cross beam to descend to the lowest position, the cover plate changes to the second state. Subsequently, the second car drives into the lower vehicle-carrying platform, the cover plate changes to the third state, and the hydraulic driving device drives the lower cross beam to rise until the lower cross beam is locked by the lower safety lock mechanism in the middle of the single column 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 directly in to complete the parking of the third car.

[0014] Compared with the prior art, a four-column double-deck parking lift provided by the present invention, through the above structural design, the upper car support plate and the lower car support 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, thereby avoiding damage to the car 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 support plate and the lower car support plate can be realized, which not only simplifies the overall structure, but also reduces the floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 ; Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 ; Figure 3 is a schematic three-dimensional structure diagram during the car boarding process of the present invention; Figure 4 is a schematic three-dimensional structure diagram after parking three cars of the present invention; Figure 5 is a schematic three-dimensional structure diagram when the upper cross beam is located in the receiving groove; Figure 6 is a schematic three-dimensional structure diagram after the upper cross beam leaves the receiving groove; Figure 7 is a schematic three-dimensional structure diagram when the cover plate is in the first state; Figure 8 is a schematic three-dimensional structure diagram when the cover plate is in the second state; Figure 9 is a schematic three-dimensional structure diagram when the cover plate is in the third state; Figure 10 is an exploded view of the upper car plate assembly; Figure 11 is a front view of the upper car plate assembly; Figure 12 is Figure 11 an enlarged structural schematic diagram of part A in Figure 13 is a schematic three-dimensional structure diagram when the second upper car plate is flipped to the first upper car plate; Figure 14 is a schematic three-dimensional structure diagram when the upper cross beam is in the locked state; Figure 15 is a schematic three-dimensional structure diagram when the upper cross beam is in the unlocked state; Figure 16 is an exploded view of the upper safety lock mechanism.

[0016] Description of the reference numerals: 1. Four-column support; 11. Single column; 111. Outer sliding groove; 112. Inner sliding groove; 113. First-level locking hole; 114. Second-level locking seat; 2. Upper car-carrying platform; 20. Upper car-supporting plate; 21. Upper cross beam; 211. First-level locking seat; 212. Second-level locking ear; 22. Upper safety locking mechanism; 221. First-level safety locking component; 2211. First-level cylinder; 2212. First-level connecting block; 2213. First-level stop block; 222. Second-level safety locking component; 2221. Second-level cylinder; 2222. Second-level connecting block; 2223. Second-level bolt; 2224. Second-level stop block; 23. Transition plate; 3. Lower car-carrying platform; 30. Lower car-supporting plate; 31. Lower cross beam; 32. Lower safety locking mechanism; 4. Hydraulic driving device; 5. Upper car plate assembly; 51. First upper car 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. Upper inclined plate; 513. Mounting flat plate; 514. Upper side plate; 52. Sliding pin; 53. Cover plate; 531. Perforation; 532. Baffle; 533. Connecting side plate; 534. Handle; 54. Second upper car plate; 55. Connecting shaft. Detailed implementation manners

[0017] The present invention will be described in detail below in conjunction with specific embodiments.

[0018] 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 used to better explain the characteristics and the relationships between the characteristics. It should be understood that when the placement direction of the present invention changes, the direction of the characteristics and the relationships between the characteristics also changes accordingly. Therefore, the direction words do not constitute an absolute limiting effect on the characteristics and the relationships between the characteristics in space, but only play a relative limiting role.

[0019] The present invention provides a four-column double-deck parking lift, as Figures 1 to 16As shown in the figure, 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 chute 111 and an inner chute 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-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 driving device 4 to lift and lower. The upper vehicle-carrying platform 2 includes two front and rear upper cross beams 21 and an upper vehicle-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 driving device 4, the lifting and lowering of the upper vehicle-carrying plate 20 and the lower vehicle-carrying plate 30 can be realized, which not only simplifies the overall structure but also reduces the occupied space.

[0020] An upper vehicle board assembly 5 is installed on the front side of the lower cross beam 31. The upper vehicle board 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-carrying plate 20 wraps the lower vehicle-carrying plate 30 from top to bottom. Specifically, the cross-sections of the upper vehicle-carrying plate 20 and the lower vehicle-carrying plate 30 are both channel-shaped, and the width of the upper vehicle-carrying plate 20 is greater than the width of the lower vehicle-carrying plate 30, so that the upper vehicle-carrying plate 20 can wrap the lower vehicle-carrying plate 30. At the same time, the processing of the channel-shaped upper vehicle-carrying plate 20 and the lower vehicle-carrying plate 30 is more convenient and the cost is lower. When the lower cross beam 31 is lifted and lowered, the upper vehicle board assembly 5 is lifted and lowered synchronously, and the upper cross beam 21 is driven to lift and lower by means of the upper vehicle board 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. 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 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 realize the locking of 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.

[0021] Based on the above structural design, the upper vehicle-carrying plate 20 and the lower vehicle-carrying plate 30 share an upper vehicle board assembly 5, which not only reduces the manufacturing cost but also eliminates the step drop formed by the superposition of multiple upper vehicle boards, thus avoiding damage to the vehicle chassis and ensuring smooth driving regardless of which layer the vehicle drives onto.

[0022] In this embodiment, as Figures 7 to 9As shown in the figure, the upper boarding plate assembly 5 includes a first upper boarding plate 51, a sliding pin 52, and a cover plate 53. A receiving groove 510 is provided in the first upper boarding plate 51. A sliding through groove 511 is provided on the side of the first upper boarding plate 51. A perforation 531 is provided on the side of the cover plate 53. The sliding pin 52 passes through the sliding through groove 511 and the perforation 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; 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.

[0023] Through the above structural design, when parking the first car, the cover plate 53 is in the first state, and the upper towing plate 20 and the lower towing plate 30 share a single upper boarding plate assembly 5, thus reducing costs; when parking the second car, 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 car drives onto the lower towing plate 30, improving the stability of boarding; when the second car 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 car sliding or rolling back, thereby protecting the safety of the car, passengers, and the surrounding environment.

[0024] In this embodiment, as Figures 7 to 11 shown, the first upper boarding plate 51 includes an upper boarding inclined plate 512 connected in front of the receiving groove 510, a mounting flat plate 513 connected behind the receiving groove 510, and upper boarding side plates 514 connected to both sides of the upper boarding inclined plate 512. The sliding through groove 511 is provided in the upper 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 upper 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 perforation 531 is provided in the connecting side plates 533; 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 upper vehicle ramp 512 and the trailing edge of the shielding plate 532 does not protrude above the receiving groove 510, ensuring that the shielding plate 532 does not block the receiving groove 510, so that the upper cross beam 21 can be smoothly inserted into the receiving groove 510; In the second state, the sliding pin 52 slides to the second positioning point 5116. The leading edge of the shielding plate 532 overlaps on the upper vehicle ramp 512, and the trailing edge of the shielding plate 532 overlaps on the mounting flat plate 513. Supported by the upper vehicle ramp 512 and the mounting flat plate 513 together, it can prevent the shielding plate 532 from falling into the receiving groove 510, improving the stability of getting on the vehicle; In the third state, the sliding pin 52 slides to the third positioning point 5117. The shielding plate 532 is placed with its leading edge at the bottom and trailing edge at the top. The leading edge of the shielding plate 532 is supported by the upper vehicle ramp 512 and the overall center of gravity of the shielding plate 532 is further forward than the leading edge, thus ensuring that the sliding pin 52 does not disengage from the third positioning point 5117, playing a role in stopping the wheel.

[0025] In this embodiment, as Figure 12 shown, a rectangular coordinate system is established with the first positioning point 5115 as the origin. The horizontal plane is the X direction, the vertical plane is the Y direction. The trend of the first sliding section 5111 extends along the inclined direction between the positive direction of the X axis and the positive direction of the Y axis. The trend of the second sliding section 5112 extends along the inclined direction between the negative direction of the Y axis and the positive direction of the X axis. The trend of the third sliding section 5113 extends along the inclined direction between the positive direction of the X axis and the positive direction of the Y axis. The trend of the fourth sliding section 5114 extends upward along the positive direction of the Y axis. 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.

[0026] 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.

[0027] In this embodiment, as Figure 13 shown, the upper vehicle plate assembly 5 further includes a second upper vehicle plate 54. The second upper vehicle plate 54 is hingedly connected to the first upper vehicle plate 51 through a coupling shaft 55. The second upper vehicle plate 54 can rotate around the axis of the coupling shaft 55 so that the top surface of the second upper vehicle plate 54 fits against the top surface of the first upper vehicle plate 51. When the lower vehicle towing plate 30 parks the vehicle, the second upper vehicle plate 54 can be manually flipped onto the first upper vehicle plate 51, thereby reducing the suspended length of the upper vehicle plate assembly 5 and avoiding space limitation due to the excessive length of the upper vehicle plate assembly 5.

[0028] In this embodiment, as Figures 14 to 16As shown in the figure, 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 disposed on the upper crossbeam 21, and the secondary safety lock assembly 222 is disposed on the single vertical column 11. The single vertical column 11 is provided with a primary lock hole 113, the upper crossbeam 21 is provided with a primary lock seat 211, and the primary lock seat 211 is provided with a secondary lock lug 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 lug 212, the upper vehicle-carrying 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 lug 212, the upper vehicle-carrying platform 2 is in the unlocked state.

[0029] 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 function to ensure the safety of the vehicle and effectively prevent accidental unlocking or starting of the vehicle caused by misoperation.

[0030] In this embodiment, as Figures 14 to 16 shown, the primary safety lock assembly 221 includes a primary cylinder 2211, a primary connecting block 2212, and a primary stopper 2213. The fixed end of the primary cylinder 2211 is hinged to the primary lock seat 211. A part of the primary stopper 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 stopper 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 stopper 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 stopper 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 stopper 2224 can be driven by the secondary cylinder 2221 to hook or disengage from the secondary lock lug 212.

[0031] Through the above structural design, when unlocking is required, the primary cylinder 2211 drives the primary stopper 2213 to rotate, causing the primary stopper 2213 to disengage from the primary lock hole 113, i.e., completing the primary unlocking. The secondary cylinder 2221 drives the secondary stopper 2224 to rotate, causing the secondary stopper 2224 to disengage from the secondary lock lug 212, i.e., completing the secondary unlocking, thereby completely unlocking the upper crossbeam 21.

[0032] In this embodiment, as Figures 5 to 6As shown, a transition plate 23 is provided on the upper cross beam 21. When the upper cross beam 21 is inserted into the accommodation groove 510, the transition plate 23 can cover the accommodation groove 510, facilitating the car to drive onto the upper car-carrying plate 20 and reducing the passing difficulty.

[0033] In this embodiment, as Figures 3 to 4 shown, 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 onto the upper car-carrying 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 lift 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 car; Before parking the second car, the hydraulic drive device 4 drives the lower cross beam 31 to descend to the lowest position, and the cover plate 53 changes to the second state. Subsequently, the second car drives onto the lower car-carrying platform 3, and the cover plate 53 changes to the third state. 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 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 well, and the third car drives in directly to complete the parking of the third car.

[0034] In summary, this four-column double-deck parking lift can solve the problems in the prior art that the upper car-lifting plate and the lower car-lifting 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.

[0035] Without conflict, the above embodiments and the features in the embodiments can be combined with each other.

[0036] 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-post double-deck parking lift, characterized in that: The vehicle loading platform (3) comprises a four-column support (1), an upper vehicle loading platform (2), a lower vehicle loading platform (3) and a hydraulic drive device (4). The four-column support (1) is provided with four single columns (11), each of which is provided with an outer slide groove (111) and an inner slide groove (112) which are parallel to each other. The lower vehicle loading platform (3) comprises two lower cross beams (31) at the front and rear 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 slide groove (112) and driven to rise and fall by the hydraulic drive device (4). The upper vehicle loading platform (2) comprises two upper cross beams (21) at the front and rear 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 slide groove (111). The front side of the lower cross beam (31) is provided with an upper plate assembly (5), and the upper 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 support plate (20) wraps the lower support plate (30) from top to bottom. When the lower cross beam (31) is raised or lowered, the upper plate assembly (5) is raised or lowered synchronously, and the upper cross beam (21) is raised or lowered with the help of the upper 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) at the middle of the single column (11) is provided between the single column (11) and the lower cross beam (31).

2. The four-post double-deck parking lift according to claim 1, characterized in that: The boarding plate assembly (5) comprises a first boarding plate (51), a sliding pin (52) and a cover plate (53); a receiving groove (510) is arranged on the first boarding plate (51); a sliding groove (511) is arranged on the side of the first boarding plate (51); a through hole (531) is arranged on the side of the cover plate (53); the sliding pin (52) passes through the sliding groove (511) and the through hole (531); the sliding pin (52) slides in the sliding groove (511) to change the placement mode of the cover plate (53), so that the cover plate (53) can be in a first state, a second state and a third state; When the cover plate (53) is in the first state, the cover plate (53) leaves the accommodating groove (510) so that the upper part of the accommodating groove (510) is open, and the upper crossbeam (21) can be inserted into the accommodating groove (510) from top to bottom; When the cover plate (53) is in the second state, the cover plate (53) is capable of covering the accommodating groove (510); When the cover plate (53) is in the third state, the cover plate (53) can be in a standing state.

3. The four-post double-deck parking lift according to claim 2 is characterized in that: The first boarding plate (51) comprises a boarding inclined plate (512) connected to the front of the accommodating groove (510), a mounting plate (513) connected to the rear of the accommodating groove (510), and boarding side plates (514) connected to both sides of the boarding inclined plate (512); a sliding groove (511) is provided on the boarding side plate (514); the mounting plate (513) is used to connect with the lower cross beam (31); the sliding groove (511) comprises a first sliding section (5111), a second sliding section (5112), a third sliding section (5113), and a fourth sliding section (5114) which are connected in sequence; The front end of the first sliding section (5111) is a first positioning point (5115), the intersection point between 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), and the line between 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), and the perforation (531) is provided on the connecting side plates (533); In the first state, the sliding pin (52) slides to the first positioning point (5115), the bottom surface of the shielding plate (532) fits the top surface of the boarding inclined plate (512), and the rear edge of the shielding plate (532) does not extend above the accommodating 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 the boarding inclined plate (512), and the rear edge of the shielding plate (532) overlaps the mounting flat plate (513); In the third state, the sliding pin (52) slides to the third positioning point (5117), and the shielding plate (532) is placed with the front edge at the bottom and the rear edge at the top. The front edge of the shielding plate (532) is supported by the boarding inclined plate (512) and the overall center of gravity of the shielding plate (532) is further forward than the front edge.

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

5. The four-post double-deck parking lift according to claim 3 is characterized in that: The connecting side plate (533) is provided with a handle (534).

6. The four-post double-deck parking lift according to claim 2, characterized in that: The boarding plate assembly (5) also includes a second boarding plate (54), which is hingedly connected to the first boarding plate (51) via a connecting shaft (55). The second boarding plate (54) can rotate around the axis of the connecting shaft (55) so that the top surface of the second boarding plate (54) fits the top surface of the first boarding plate (51).

7. The four-post double-deck parking lift according to claim 1, characterized in that: The upper safety lock mechanism (22) comprises a primary safety lock assembly (221) and a secondary safety lock assembly (222); the primary safety lock assembly (221) is arranged on the upper crossbeam (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 crossbeam (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) is hooked onto the secondary lock ear (212), the upper vehicle loading platform (2) is in a locked state; When the primary safety lock assembly (221) is disengaged from the primary lock hole (113) and the secondary safety lock assembly (222) is disengaged from the secondary lock ear (212), the upper vehicle loading platform (2) is in an unlocked state.

8. The four-post double-deck parking lift according to claim 7, characterized in that: The primary safety lock assembly (221) comprises a primary cylinder (2211), a primary connection block (2212) and a primary stopper (2213); the fixed end of the primary cylinder (2211) is hinged to the primary lock seat (211); a portion of the primary stopper (2213) is hinged to the primary lock seat (211), and a portion of the primary stopper (2213) is hinged to the telescopic end of the primary cylinder (2211) through the primary connection block (2212); the primary stopper (2213) can be driven by the primary cylinder (2211) to be inserted into or out of the primary lock hole (113); The secondary safety lock assembly (222) comprises a secondary cylinder (2221), a secondary connecting block (2222), a secondary latch (2223) and a secondary stopper (2224); the single column (11) is provided with a secondary lock seat (114); a fixed end of the secondary cylinder (2221) is hinged to the secondary lock seat (114); a part of the secondary stopper (2224) is hinged to the secondary lock seat (114) through the secondary latch (2223); a part of the secondary stopper (2224) is hinged to the secondary lock seat (114) through the secondary latch (2223); and a part of the secondary stopper (2224) is hinged to the telescopic end of the secondary cylinder (2221) through the secondary connecting block (2222); and the secondary stopper (2224) can be driven by the secondary cylinder (2221) to hook or detach from the secondary lock ear (212).

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

10. The four-post double-deck parking lift according to any one of claims 2 to 4, characterized in that: This four-post double-decker parking lift can park three cars; Before parking the first car, the upper crossbeam (21) and the lower crossbeam (31) are at the lowest position, at which time the upper crossbeam (21) is located in the receiving groove (510), and the cover plate (53) is in the first state. Then, the first car drives into the upper vehicle loading platform (2), the cover plate (53) changes to the third state, and the hydraulic drive device (4) drives the lower crossbeam (31) to rise, while the upper crossbeam (21) follows the rise and fall, until the upper crossbeam (21) is locked to the upper safety lock mechanism (22) at the top of the single column (11), so as 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, and the cover plate (53) changes to the second state. Then, the second car drives into the lower vehicle loading platform (3), and the cover plate (53) changes to the third state. The hydraulic drive device (4) drives the lower cross beam (31) to rise until the lower cross beam (31) is locked to the lower safety lock mechanism (32) in the middle of the single column (11), so as to complete the parking of the second car. Before parking the third car, the first car and the second car have been parked, and the third car drives directly in to complete the parking of the third car.

Images