Four-column lifting machine with reinforcement structure

Abstract

The utility model discloses a four -column lifting machine with reinforcing structure, including lifting platform, lifting mechanism, front -back stabilizing mechanism, left -right stabilizing mechanism and prevent over -travel mechanism, the lifting mechanism includes hydraulic pressure rod, fixed link and lifting rod, the inside of fixed link is slidably installed to the lifting rod, the upper end fixed mounting of lifting rod is in the lower surface four corners of lifting platform, the front -back stabilizing mechanism includes first gear, first rotation axis and first tooth groove, first tooth groove is set up in the side surface of lifting rod. The utility model discloses through being provided with front -back stabilizing mechanism and left -right stabilizing mechanism, guarantees the synchronous stable lifting of two groups of lifting rods, guarantees the synchronous stable lifting of left and right two groups of lifting rods simultaneously, and synchronous extension or shortening is controlled through servo system between two groups of hydraulic pressure rods, effectively avoided traditional lifting machine platform inclination and the problem of wobble, reduced manufacturing cost simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of lift technology, and in particular to a four-post lift with a reinforced structure. Background Technology

[0002] A four-post lift is a hydraulic lifting device used for automotive repair and maintenance. It consists of four vertical posts, a crossbeam, a lifting platform, and a hydraulic system. Its working principle involves a hydraulic pump driving cylinders to smoothly raise and lower the platform along the post guide rails. The maximum lifting height is typically 1.8-2.2 meters, and the rated load can reach 3-5 tons. The four-post structure design provides excellent stability and safety, equipped with a mechanical locking device to prevent accidental falls. Some models also integrate a secondary lifting slide for wheel operations. This equipment is suitable for 4S shops, quick repair centers, and other similar locations, efficiently completing chassis repairs, tire changes, and other tasks. It features a small footprint, easy operation, and low maintenance costs, making it one of the fundamental pieces of equipment in the automotive repair industry.

[0003] Currently, traditional four-post lifts often lack additional reinforcement measures in their structural design. During lifting, the platform is susceptible to uneven load distribution or structural flexibility, leading to asynchronous displacement at the four corners. This can cause the platform to tilt or sway, affecting safety and comfort. To overcome this deficiency and ensure platform stability, existing technology proposes a solution: using a servo system to precisely control four independent hydraulic rods or lead screws to achieve synchronous lifting at the four corners. However, while this four-rod design significantly improves synchronization accuracy, it also significantly increases the cost of the hydraulic system, control unit, and related sensors, resulting in a substantial increase in overall manufacturing cost and maintenance complexity. Utility Model Content

[0004] One objective of this invention is to provide a four-post lift with a reinforced structure. This invention addresses the problem mentioned in the background that while the design using four sets of hydraulic rods can significantly improve synchronization accuracy, it also significantly increases the cost of the hydraulic system, control unit, and related sensors, thereby greatly increasing the manufacturing cost and maintenance complexity of the entire machine.

[0005] A four-post lift with a reinforced structure according to an embodiment of the present invention includes a lifting platform, a lifting mechanism, a front and rear stabilizing mechanism, a left and right stabilizing mechanism, and an overtravel prevention mechanism. The lifting mechanism includes a hydraulic rod, a fixed rod, and a lifting rod. The lifting rod is slidably installed on the inner side of the fixed rod, and the upper end of the lifting rod is fixedly installed at the four corners of the lower surface of the lifting platform. The front and rear stabilizing mechanism includes a first gear, a first rotating shaft, and a first tooth groove. The first tooth groove is formed on the side surface of the lifting rod, and the first gear is rotatably installed between the front and rear lifting mechanisms via the first rotating shaft. The left and right stabilizing mechanism includes a second gear, a second rotating shaft, and a second tooth groove. The second tooth groove is formed on the side surface of the lifting mechanism, and the second gear is rotatably installed between the left and right lifting mechanisms via the second rotating shaft.

[0006] Preferably, a guide plate is fixedly installed on one side surface of the lifting platform.

[0007] Preferably, the telescopic end of the hydraulic rod is fixedly installed on the lower surface of the lifting platform.

[0008] Preferably, the first gear meshes with the lifting rod through the first tooth groove, and the first rotating shaft is rotatably mounted inside the lower part of the equipment through the first fixed block.

[0009] Preferably, the second gear meshes with the lifting rod through the second tooth groove, and the second rotating shaft is rotatably mounted inside the lower part of the equipment through the second fixing block.

[0010] Preferably, the anti-overtravel mechanism includes a crash barrier and an indicator light, with the indicator light fixedly installed on the upper part of one side surface of the crash barrier.

[0011] Preferably, a limit rod is installed on one side of the lifting platform, and the limit rod is fixedly installed in the lower inner part of the equipment.

[0012] Preferably, the anti-collision plate is movably mounted on one side surface of the limiting rod via a spring structure, a second power source is installed on the side of the anti-collision plate near the limiting rod, and a first power source is installed on the side surface of the limiting rod near the anti-collision plate.

[0013] The beneficial effects of this utility model are:

[0014] This invention utilizes front-to-back and left-to-right stabilizing mechanisms. When the lifting platform is raised or lowered, the hydraulic rods of the lifting mechanism extend or retract, causing the platform to rise or fall. Simultaneously, the lifting rods slide within the fixed rods. The first gear and first tooth groove of the front-to-back stabilizing mechanism mesh, driving the first rotating shaft to rotate. This causes the first gear at the other end of the first rotating shaft to mesh with the first tooth groove, ensuring synchronized and stable raising and lowering of the two sets of lifting rods. Simultaneously, the lifting rods drive the second gear of the left-to-right stabilizing mechanism to rotate, causing the second gear at the other end of the second rotating shaft to rotate synchronously, ensuring synchronized and stable raising and lowering of the two sets of lifting rods. Furthermore, the two sets of hydraulic rods are controlled by a servo system to extend or retract synchronously, effectively avoiding the tilting and swaying problems of traditional lifting platforms and reducing manufacturing costs.

[0015] This utility model, through its anti-overtravel mechanism, ensures that when a vehicle moves to the surface of the lifting platform via the guide plate, the front of the vehicle touches the surface of the anti-collision plate. The anti-collision plate moves towards the limit rod, compressing the spring structure. As the anti-collision plate moves, it causes the second power source to contact the first power source, illuminating the indicator light. This indicates that the vehicle is in the correct position, and the vehicle can then be parked there. Furthermore, the multiple anti-overtravel mechanisms can accommodate vehicles of different heights, accurately indicating the vehicle's parking position, preventing the vehicle from moving beyond its designated range, and improving both ease of use and safety. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a structural diagram of a four-post lift with a reinforced structure proposed in this utility model;

[0018] Figure 2 This utility model proposes a four-post lift with a reinforced structure. Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a three-dimensional schematic diagram from another angle of a four-post lift with a reinforced structure proposed in this utility model;

[0020] Figure 4 This utility model proposes a four-post lift with a reinforced structure. Figure 3 Enlarged view of point B in the middle;

[0021] In the diagram: 1. Lifting platform; 2. Guide plate; 3. Lifting mechanism; 301. Hydraulic rod; 302. Fixed rod; 303. Lifting rod; 4. Front and rear stabilizing mechanism; 401. First fixed block; 402. First rotating shaft; 403. First gear; 404. First tooth groove; 5. Left and right stabilizing mechanism; 501. Second fixed block; 502. Second rotating shaft; 503. Second gear; 504. Second tooth groove; 6. Anti-overtravel mechanism; 601. Limit rod; 602. Anti-collision plate; 603. Indicator light; 604. First power supply; 605. Second power supply; 606. Spring structure. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0023] refer to Figure 1-4 A four-post lift with a reinforced structure includes a lifting platform 1, a lifting mechanism 3, a front and rear stabilizing mechanism 4, a left and right stabilizing mechanism 5, and an overtravel prevention mechanism 6. The lifting mechanism 3 includes a hydraulic rod 301, a fixed rod 302, and a lifting rod 303. The lifting rod 303 is slidably mounted on the inner side of the fixed rod 302, and its upper end is fixedly mounted on the four corners of the lower surface of the lifting platform 1. The front and rear stabilizing mechanism 4 includes a first gear 403, a first rotating shaft 402, and a first tooth groove 404. The first tooth groove 404 is formed on the side surface of the lifting rod 303. The first gear 403 is rotatably mounted between the front and rear lifting mechanisms 3 via the first rotating shaft. The left and right stabilizing mechanism 5 includes a second gear 503, a second rotating shaft 502, and a second tooth groove 504. The second tooth groove 504 is formed on the side surface of the lifting mechanism 504. The second gear 503 is rotatably mounted between the left and right lifting mechanisms 3 via the second rotating shaft. The front and rear stabilizing mechanism 4 and the left and right stabilizing mechanism 5 are configured to provide stability. When the lifting platform 1 is raised or lowered, the hydraulic rod 301 of the lifting mechanism 3 extends or shortens, driving the lifting platform 1 to rise or fall. Simultaneously, the lifting platform 1 raises or lowers, causing the lifting rod 303 to slide inside the fixed rod 302. The first gear 403 and the first tooth groove 404 of the front and rear stabilizing mechanisms 4 mesh with each other, thereby driving the first rotating shaft 402 to rotate. This causes the first gear 403 at the other end of the first rotating shaft 402 to mesh with the first tooth groove 404, ensuring the synchronous and stable raising and lowering of the two sets of lifting rods 303. At the same time, the lifting rod 303, while raising or lowering, drives the second gear 503 of the left and right stabilizing mechanisms 5 to rotate. The second gear 503 at the other end of the second rotating shaft 502 rotates synchronously, ensuring the synchronous and stable raising and lowering of the two sets of lifting rods 303. Furthermore, the two sets of hydraulic rods 301 are controlled by a servo system to extend or shorten synchronously, effectively avoiding the tilting and swaying problems of traditional lifting platforms and reducing manufacturing costs.

[0024] Example 1: A guide plate 2 is fixedly installed on one side surface of the lifting platform 1. The telescopic end of the hydraulic rod 301 is fixedly installed on the lower surface of the lifting platform 1. The first gear 403 meshes with the lifting rod 303 through the first tooth groove 404. The first rotating shaft 402 is rotatably installed in the lower part of the equipment through the first fixing block 401. The second gear 503 meshes with the lifting rod 303 through the second tooth groove 504. The second rotating shaft 502 is rotatably installed in the lower part of the equipment through the second fixing block 501.

[0025] Example 2: The anti-overtravel mechanism 6 includes a crash barrier 602 and an indicator light 603. The indicator light 603 is fixedly installed on the upper part of one side surface of the crash barrier 602. A limit rod 601 is installed on one side of the lifting platform 1 and is fixedly installed in the lower inner part of the equipment. The crash barrier 602 is movably installed on one side surface of the limit rod 601 via a spring structure 606. A second power supply 605 is installed on the side of the crash barrier 602 near the limit rod 601, and a first power supply 604 is installed on the side surface of the limit rod 601 near the crash barrier 602. Through the anti-overtravel mechanism 6, when a vehicle passes... When the guide plate 2 moves to the surface of the lifting platform 1, the front of the vehicle touches the surface of the anti-collision plate 602. The anti-collision plate 602 moves towards the limit rod 601, causing the spring structure 606 to be compressed. When the anti-collision plate 602 moves, it drives the second power supply 605 to contact the first power supply 604, causing the indicator light 603 to light up, indicating that the vehicle is in the right position. Then the vehicle can be parked there. In addition, multiple sets of anti-overtravel mechanisms 6 are set to adapt to vehicles of different heights, accurately indicate the parking position of the vehicle, prevent the vehicle from moving beyond its travel range, adapt to vehicles of different heights, and improve the convenience and safety of use.

[0026] In use, the operator first drives the vehicle onto the surface of the lifting platform 1 via the guide plate 2. To confirm the vehicle's parking position, the front of the vehicle will touch the anti-overtravel mechanism 6's anti-collision plate 602. Under the action of the spring structure 606, the anti-collision plate 602 moves towards the limit rod 601 until the second power supply 605 on it contacts the first power supply 604 on the side of the limit rod 601, illuminating the indicator light 603 to indicate that the vehicle has been parked in the appropriate position. The operator can then fix the vehicle in place. After confirming and fixing the vehicle position, the lifting mechanism 3 is activated, and the hydraulic rod 301 begins to extend or retract. Its extension end is fixed to the lower surface of the lifting platform 1, directly driving the lifting platform 1 and the vehicle on it to rise or fall. During the movement of the lifting platform 1, the lifting rods 303, which are fixedly connected to the four corners of its lower surface, slide inside the fixed rod 302. The side surface of the lifting rod 303 has a first tooth groove 404 and a second tooth groove 504. The sliding of the lifting rod 303 will drive the first tooth of the front and rear stabilizing mechanism 4. The groove 404 meshes with the first gear 403 installed in the middle and rotates, causing the first rotating shaft 402 to rotate accordingly and be supported by the first fixed block 401. The first gear 403 at its other end meshes with the first tooth groove 404 of the lifting rod 303 on the opposite side, forcing the two sets of lifting rods 303 to rise and fall synchronously. At the same time, the movement of the lifting rod 303 also drives the second tooth groove 504 of the left and right stabilizing mechanism 5 to mesh with the second gear 503 installed in the middle and rotate, causing the second rotating shaft 502 to rotate accordingly and be supported by the second fixed block 501. The second gear 503 at its other end meshes with the second tooth groove 504 of the lifting rod 303 on the other side, forcing the two sets of lifting rods 303 to rise and fall synchronously. In addition, the two sets of hydraulic rods 301 are also controlled by a servo system to ensure that the hydraulic rods 301 extend or shorten synchronously. Working together with the mechanical synchronization mechanism, it effectively avoids the platform tilting or swaying problems that may occur in traditional lifts, ensuring the smoothness and safety of the lifting process and completing the lifting or lowering operation of the vehicle.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A four-post lift with a reinforced structure, characterized in that, The system includes a lifting platform (1), a lifting mechanism (3), a front and rear stabilizing mechanism (4), a left and right stabilizing mechanism (5), and an overtravel prevention mechanism (6). The lifting mechanism (3) includes a hydraulic rod (301), a fixed rod (302), and a lifting rod (303). The lifting rod (303) is slidably installed on the inner side of the fixed rod (302). The upper end of the lifting rod (303) is fixedly installed at the four corners of the lower surface of the lifting platform (1). The front and rear stabilizing mechanism (4) includes a first gear (403) and a first rotating shaft (402). The first gear (404) is opened on the side surface of the lifting rod (303). The first gear (403) is rotatably installed between the front and rear lifting mechanisms (3) via the first rotating shaft. The left and right stabilizing mechanism (5) includes a second gear (503), a second rotating shaft (502), and a second gear (504). The second gear (504) is opened on the side surface of the lifting groove. The second gear (503) is rotatably installed between the left and right lifting mechanisms (3) via the second rotating shaft.

2. A four-post lift with a reinforced structure according to claim 1, characterized in that, A guide plate (2) is fixedly installed on one side surface of the lifting platform (1).

3. A four-post lift with a reinforced structure according to claim 1, characterized in that, The telescopic end of the hydraulic rod (301) is fixedly installed on the lower surface of the lifting platform (1).

4. A four-post lift with a reinforced structure according to claim 1, characterized in that, The first gear (403) meshes with the lifting rod (303) through the first tooth groove (404), and the first rotating shaft (402) is rotatably installed in the lower part of the equipment through the first fixed block (401).

5. A four-post lift with a reinforced structure according to claim 1, characterized in that, The second gear (503) meshes with the lifting rod (303) through the second tooth groove (504), and the second rotating shaft (502) is rotatably installed in the lower part of the equipment through the second fixing block (501).

6. A four-post lift with a reinforced structure according to claim 1, characterized in that, The anti-overtravel mechanism (6) includes a crash plate (602) and an indicator light (603), wherein the indicator light (603) is fixedly installed on the upper part of one side surface of the crash plate (602).

7. A four-post lift with a reinforced structure according to claim 1, characterized in that, A limit rod (601) is installed on one side of the lifting platform (1), and the limit rod (601) is fixedly installed in the lower inner part of the equipment.

8. A four-post lift with a reinforced structure according to claim 6, characterized in that, The anti-collision plate (602) is movably mounted on one side surface of the limiting rod (601) via a spring structure (606). A second power supply (605) is installed on the side of the anti-collision plate (602) near the limiting rod (601), and a first power supply (604) is installed on the side surface of the limiting rod (601) near the anti-collision plate (602).

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