Elevator for vehicle

Abstract

The invention belongs to the technical field of vehicle accessories, and particularly relates to a vehicle lifter which comprises a recycling bin, a lifting mechanism, a lifting mechanism and a lifting mechanism. A locking mechanism is arranged at one end of the movable frame, and the locking mechanism is matched with the lock hook to lock the movable frame in the recovery bin; the unlocking mechanism is configured to drive the locking mechanism to be separated from the lock hook; the driving mechanism comprises a driving motor, a driving wheel and a transmission unit, the driving motor is in transmission connection with the driving wheel through a clutch, and the driving wheel is in transmission connection with the transmission unit; the shifting mechanism is configured to shift the clutch to enable the output end of the driving motor to be separated from the driving wheel and drive the locking mechanism to be separated from the lock hook; the lifting platform is arranged at the end, away from the lock hook, of the movable frame and is configured to be driven by a hydraulic lifting mechanism arranged on the movable frame to ascend and descend; and the hydraulic station is configured to provide hydraulic power for the hydraulic lifting mechanism. The device is high in safety, convenient to overhaul and long in service life.

Description

Technical Field

[0001] This application belongs to the field of vehicle parts technology, and in particular relates to a vehicle lift. Background Technology

[0002] To facilitate boarding and alighting for people with disabilities, lifts are often installed on vehicles. These lifts can raise and lower both the person and wheelchair, allowing them to board and alight without leaving their wheelchairs, greatly simplifying the process for people with disabilities.

[0003] A wheelchair lift typically consists of a storage compartment connected to the vehicle body and a lifting platform. The platform can rise and fall, thus raising or lowering the wheelchair. When not in use, the lifting platform retracts into the storage compartment, without affecting normal vehicle operation. The extension and retraction of the lifting platform relies primarily on a moving mechanism that can move within the storage compartment, powered mainly by the vehicle's electricity. During normal vehicle operation, especially on bumpy roads, the moving mechanism can cause shaking, displacement, or even significant displacement within the storage compartment, potentially causing the lifting platform to extend beyond the compartment and posing a safety hazard. Summary of the Invention

[0004] To address the technical problem of easy displacement of the moving mechanism within the recovery bin in existing technologies, this application provides a vehicle lift.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is a vehicle lift, comprising:

[0006] The recycling bin has an opening at one end and a locking hook at the other end.

[0007] A movable frame is slidably disposed within the recycling bin, and a locking mechanism is provided at one end near the locking hook. The locking mechanism cooperates with the locking hook to lock the movable frame within the recycling bin.

[0008] An unlocking mechanism, mounted on the movable frame, is configured to drive the locking mechanism to disengage from the locking hook;

[0009] The drive mechanism includes a drive motor, a drive wheel, and a transmission unit. The drive motor is connected to the drive wheel via a clutch, the drive wheel is connected to the transmission unit, and the transmission unit is fixed inside the recycling bin.

[0010] A toggle mechanism configured to actuate a clutch to disengage the output of the drive motor from the drive wheel, and to drive a locking mechanism to disengage the locking mechanism from the lock hook;

[0011] A lifting platform is located at the end of the movable frame away from the locking hook and is configured to be lifted and lowered by a hydraulic lifting mechanism provided on the movable frame.

[0012] A hydraulic station, fixedly mounted on the movable frame, is configured to provide hydraulic power to the hydraulic lifting mechanism.

[0013] In some embodiments, the locking mechanism is a paddle lock, one end of which has a lever to control the opening and closing of its locking tongue. The unlocking mechanism includes a first hydraulic cylinder mounted on the movable frame. The output end of the first hydraulic cylinder is disposed opposite to the lever. The first hydraulic cylinder is powered by the hydraulic station.

[0014] In some embodiments, the actuating mechanism includes a lever and a paddle. The lever is connected to the clutch, one end of the paddle is rotatably connected to the lever, and the other end is opposite to the rocker arm. The middle part of the lever is hinged to the movable frame. The lever is also connected to a pull cable assembly, which includes a conduit and a wire core disposed within the conduit. Both ends of the conduit are fixedly connected to the movable frame and the recycling bin, respectively. One end of the wire core is fixedly connected to the lever, and the other end is connected to a handle rotatably disposed outside the recycling bin. One end of a return spring is connected to the lever, and the other end is connected to the movable frame.

[0015] In some embodiments, the hopper opening is rotatably provided with a hopper door, and a first torsion spring is provided between the hopper opening and the hopper door. The first torsion spring is configured to cause the hopper door to tend to flip towards the hopper opening. A sliding block is slidably provided inside the recycling hopper near the locking hook. The sliding block corresponds to the position of the lever near the swing arm. One end of the cable is connected to the sliding block and the other end is connected to the hopper door. When the locking mechanism engages with the locking hook, the lever abuts against the sliding block and pushes the sliding block to slide towards the locking hook, and the cable is in a taut state. When the lever swings, the lever and the sliding block are misaligned.

[0016] In some embodiments, the hydraulic lifting mechanism includes a second cylinder, a swing arm, a drive rod, a first connecting rod, and a second connecting rod;

[0017] One end of the swing arm is hinged to the output end of the second hydraulic cylinder, the other end is hinged to the drive rod, and the middle part is hinged to the moving frame; the cylinder body of the second hydraulic cylinder is hinged to the moving frame, and the drive rod is connected to the first connecting rod; both ends of the first connecting rod and the second connecting rod are respectively hinged to the moving frame and the lifting platform, and the first connecting rod and the second connecting rod are arranged in parallel.

[0018] In some embodiments, a rear baffle is rotatably connected to one end of the lifting platform near the swing arm via a rotating shaft, and a swing block is fixed on the rotating shaft; one end of the gas spring is hinged to the swing block, and the other end is hinged to the lifting platform;

[0019] When the gas spring is configured such that its output end is below the line connecting the rotating shaft and the hinge point between the gas spring and the lifting platform, the rear baffle is in a folded state; when it is above the line, the rear baffle is in an open state.

[0020] In some embodiments, an angle control mechanism is further provided on one side of the lifting platform. The angle control mechanism includes a third link, a cam, and a control arm, all hinged to the lifting platform. One end of the third link is provided with a first waist-shaped groove, and the other end is provided with a second waist-shaped groove. A first control shaft fixedly connected to the first link is slidably disposed in the first waist-shaped groove. A second control shaft fixedly connected to the cam is slidably disposed in the second waist-shaped groove. The end of the cam away from the second control shaft has a guide surface. The guide surface includes an arc surface centered at the rotation center of the cam and an extension surface connected to the arc surface. The extension surface extends in a direction away from the rotation center of the cam.

[0021] One end of the control arm is a hinged end, and the other end is a control end. The middle part has an abutment end. The hinged end is hinged to the lifting platform. The control end is connected to the output end of the gas spring through a pull rope. The abutment end abuts against the guide surface.

[0022] In some embodiments, the end of the swing block that is hinged to the gas spring also has an extension end that extends away from the pivot axis, and when the rear baffle is in a folded state, the extension end is lower than the bottom of the lifting platform.

[0023] In some embodiments, a first gear is fixed on the swing block, and a second gear that meshes with the first gear is rotatably disposed on the lifting platform. A stop arm perpendicular to the rotating shaft is fixed on the second gear.

[0024] The recycling bin is equipped with a rotatable stop block, which is located near the bin opening. A stop bar is provided on the side of the stop block near the bin opening. The stop block is also equipped with a second torsion spring, which is configured to cause the stop bar to tend to abut against the inner wall of the recycling bin.

[0025] The stop block is configured such that when the lifting platform retracts into the recovery bin, the stop arm contacts one side of the stop block and drives the stop block to rotate; when the lifting platform extends out of the recovery bin, the stop arm contacts the other side of the stop block and the stop block drives the stop arm to rotate; when the stop arm contacts the stop block, at least a portion of the rear baffle is located outside the recovery bin.

[0026] In some embodiments, a front baffle is rotatably provided at the end of the lifting platform away from the mobile frame, and a third hydraulic cylinder is provided at the end of the lifting platform near the front baffle. One end of the third hydraulic cylinder is hinged to the front baffle, and the other end is hinged to the lifting platform. The third hydraulic cylinder is powered by the hydraulic station.

[0027] Beneficial effects: This application, by installing a locking hook inside the recovery bin and a locking mechanism on the moving frame that cooperates with the locking hook, ensures that when the moving frame and the lifting platform are retracted into the recovery bin, the two lock together, effectively locking the moving frame inside the recovery bin and preventing displacement during vehicle movement, thus improving the safety of the recovery bin. Simultaneously, the unlocking mechanism allows the locking mechanism and locking hook to be released when the lifting platform needs to be extended out of the recovery bin, without affecting the normal operation of the lifting platform.

[0028] In addition, by setting up a toggle mechanism, in the event of a power outage or damage, not only can the drive wheel and drive motor be disengaged to prevent the drive motor from self-locking and hindering the lifting platform from being manually extended out of the recovery bin, but the locking mechanism and the locking hook can also be released at the same time, so that the two can be disengaged, making it easier to manually pull the lifting platform out of the recovery bin for maintenance.

[0029] Furthermore, this application integrates a hydraulic station on the mobile frame. Compared to the hydraulic station being installed and fixed on the vehicle body, this makes it easier to provide hydraulic power to the various hydraulic power mechanisms inside the elevator. This not only makes the elevator easier to install but also effectively shortens the length of the hydraulic connecting pipes. At the same time, the hydraulic connecting pipes of the various hydraulic power mechanisms on the mobile frame remain in a fixed position during the movement of the mobile frame, without the need for bending or stretching. This greatly improves the service life of the hydraulic connecting pipes and the elevator, and ensures the effectiveness of the hydraulic supply. Attached Figure Description

[0030] Figure 1 A schematic diagram of the elevator in the retracted state;

[0031] Figure 2 A schematic diagram showing the elevator in a horizontal position.

[0032] Figure 3 This is a schematic diagram of the angle control mechanism when the elevator is in a horizontal position.

[0033] Figure 4 A schematic diagram showing the elevator in a low-position state;

[0034] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle;

[0035] Figure 6 for Figure 4Enlarged view of the structure at point B in the middle;

[0036] Figure 7 A schematic diagram of the elevator in a high-position state;

[0037] Figure 8 for Figure 7 Enlarged view of the structure at point A in the middle;

[0038] Figure 9 for Figure 7 Enlarged view of the structure at point B in the middle;

[0039] Figure 10 This is a schematic diagram of the drive mechanism structure;

[0040] Figure 11 This is a partial view of the elevator from another angle;

[0041] Figure 12 This is a schematic diagram of the locking mechanism.

[0042] Figure 13 This is a schematic diagram of the hydraulic lifting mechanism.

[0043] Figure 14 This is a schematic diagram of the lifting platform structure in another embodiment;

[0044] Figure 15 A schematic diagram of a recovery bin structure with sliding blocks and cables;

[0045] Figure 16 for Figure 15 Enlarged view of the structure at point A in the middle;

[0046] Figure 17 A schematic diagram of a lift structure with stops and stops;

[0047] Figure 18 for Figure 17 Enlarged view of the structure at point A in the middle;

[0048] In the diagram: 1. Recycling bin; 11. Lock hook; 12. Bin door; 13. Sliding block; 14. Cable; 15. Tension spring; 16. Stop block; 161. Stop bar; 17. Handle; 2. Moving frame; 21. Drive mechanism; 211. Drive motor; 212. Drive wheel; 213. Transmission unit; 214. Clutch; 22. Locking mechanism; 221. Bump lock; 2211. Lock housing; 2212. Lock tongue; 222. Rocker arm; 23. Unlocking mechanism; 231. First cylinder; 24. Actuating mechanism; 241. Actuating block; 242. Actuating lever; 243. Cable assembly; 2431. Wire core; 2432. Cable conduit; 244. Return spring; 25. Hydraulic lifting mechanism; 251. Second cylinder. 252. Swing arm, 253. Drive rod, 254. First connecting rod, 255. Second connecting rod, 26. Hydraulic station, 27. Guide wheel, 3. Lifting platform, 31. Rear baffle, 311. Rotary shaft, 32. Swing block, 321. First gear, 322. Second gear, 323. Stop arm, 324. Extension end, 33. Gas spring, 34. Third connecting rod, 341. First waist-shaped groove, 3411. First control shaft, 342. Second waist-shaped groove, 3421. Second control shaft, 35. Cam, 351. Arc surface, 352. Extension surface, 36. Control arm, 361. Hinge end, 362. Control end, 363. Abutment end, 37. Front baffle, 38. Third cylinder, 39. Handrail. Detailed Implementation

[0049] The present application will be further described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making creative changes are within the protection scope of the present application.

[0050] This application provides a vehicle lift, such as Figure 1 and Figure 7 As shown, it mainly includes a recycling bin 1, a mobile frame 2, and a lifting platform 3. Figure 1 and Figure 7 To show the internal structure of the recycling bin 1, some of its structure is hidden. The recycling bin 1 is installed docking with the vehicle body, specifically on the chassis at the bottom of the vehicle door. One end with the bin opening faces outwards from the vehicle body. Its interior is a hollow cavity used to accommodate the moving frame 2 and the lifting platform 3. Figure 15 As shown, the inside of the silo body has a locking hook 11 at the end opposite the silo opening.

[0051] like Figure 1As shown, the mobile frame 2 is slidably disposed within the recycling bin 1. Driven by the drive mechanism 21, it moves within the recycling bin 1, causing the lifting platform 3 to retract from or extend from the bin opening. A locking mechanism 22, corresponding to the locking hook 11, is fixedly installed at the end of the mobile frame 2 furthest from the bin opening. When the mobile frame 2 moves towards the locking hook 11 until the locking mechanism 22 engages with the locking hook 11, the mobile frame 2 is locked within the recycling bin 1, preventing vibrations during vehicle operation from causing the mobile frame 2 and lifting platform 3 to extend beyond the recycling bin 1. Simultaneously, the mobile frame 2 is equipped with an unlocking mechanism 23. When the mobile frame 2 needs to extend beyond the recycling bin 1, the unlocking mechanism 23 drives the locking mechanism 22 to disengage from the locking hook 11, allowing the mobile frame 2 to move towards the bin opening under the drive of the drive mechanism 21.

[0052] like Figure 10 As shown, the drive mechanism 21 includes a drive motor 211, a drive wheel 212, and a transmission unit 213, as follows: Figure 1 As shown, the transmission unit 213 is fixed inside the recycling bin 1, and its length direction is consistent with the length direction of the recycling bin 1. The transmission unit 213 can be a chain or a timing belt. The drive motor 211 and the drive wheel 212 are fixed on the moving frame 2, as shown. Figure 10 As shown, the drive wheel 212 is connected to the output end of the drive motor 211 via a clutch 214. The drive wheel 212 engages with the transmission unit 213 for transmission or friction transmission. The drive motor 211 drives the drive wheel 212 to rotate, thereby moving the movable frame 2 within the recycling bin 1. In some embodiments, to ensure the smooth movement of the movable frame 2 within the recycling bin 1, such as... Figure 13 As shown, guide wheels 27 are provided on both sides of the mobile frame 2, and rails are fixed on both sides inside the recycling bin 1. The guide wheels 27 cooperate with the rails to ensure the smooth movement of the mobile frame 2 within the recycling bin 1.

[0053] like Figure 1 As shown, the movable frame 2 is also equipped with a toggle mechanism 24. The toggle mechanism 24 can actuate the clutch 214 to disengage the output end of the drive motor 211 from the drive wheel 212, and simultaneously drive the locking mechanism 22 to disengage the locking mechanism 22 from the locking hook 11. In the event of a power outage or malfunction of the elevator, the toggle mechanism 24 disengages the drive wheel 212 from the output end of the drive motor 211, and simultaneously releases the locking mechanism 22 and the locking hook 11, thereby ensuring that the lifting platform 3 and the movable frame 2 stored in the recycling bin 1 can be pulled out manually for easy maintenance. When the lifting platform 3 is extended outside the recycling bin 1, the toggle mechanism 24 disengages the clutch 214 from the output end of the drive motor 211, and also releases the self-locking of the drive motor 211 on the movable frame 2, allowing the lifting platform 3 and the movable frame 2 to be retracted into the recycling bin 1 manually, enabling the vehicle to drive normally.

[0054] like Figure 1 As shown, to achieve the lifting function of the lifting platform 3, a hydraulic lifting mechanism 25 is installed at the end of the movable frame 2 away from the locking hook 11. The hydraulic lifting mechanism 25 is connected to the lifting platform 3 to control the lifting of the lifting platform 3. Under the action of the movable frame 2 and the hydraulic lifting mechanism 25, the lifting platform 3 includes the following states: Figure 1 The recycling status shown is that of items stored in recycling bin 1. Figure 2 The horizontal position shown is the same height as the moving frame 2, extending out of the recovery chamber 1. Figure 4 The image shows the lowest position where the object is in contact with the ground. Figure 7 The image shows the high position above the movable frame 2, where it is connected to the vehicle door.

[0055] like Figure 1 As shown, the technical solution of this application also includes a hydraulic station 26 fixedly installed on the mobile frame 2, integrating the hydraulic station 26 onto the mobile frame 2 to provide hydraulic power to the hydraulic lifting mechanism 25. Compared with the usual design of the hydraulic station 26 being a separate unit from the lifting platform, with the hydraulic station 26 installed separately on the vehicle, the length of the hydraulic connecting pipe between the hydraulic station 26 and the hydraulic lifting mechanism 25 is significantly shortened. Furthermore, the hydraulic connecting pipe will not be bent or stretched during the movement of the mobile frame 2, avoiding damage such as oil leakage due to bending, significantly improving the service life of the equipment and reducing maintenance frequency. It also facilitates the installation of the lifting platform. Specifically, the hydraulic station 26 mainly includes components such as an oil tank, a hydraulic pump, and a hydraulic distribution valve fixed on the mobile frame 2. The hydraulic pump pumps the hydraulic oil from the oil tank and connects it to the hydraulic lifting mechanism 25 through the hydraulic distribution valve and hydraulic connecting pipe, providing hydraulic power to the hydraulic lifting mechanism 25.

[0056] Specifically, such as Figure 10 and Figure 12 As shown, in some embodiments, the locking mechanism 22 is a latch 221, one end of which has a lever 222 for controlling the opening and closing of its latch 2212, such as... Figure 10 As shown, the unlocking mechanism 23 includes a first hydraulic cylinder 231 mounted on the movable frame 2. The output end of the first hydraulic cylinder 231 is positioned opposite to the swing arm 222. The first hydraulic cylinder 231 is powered by the hydraulic station 26. As one implementation of the latch 221, such as... Figure 12As shown, the device includes a lock housing 2211 fixedly mounted on a movable frame 2 and a pair of latches 2212 rotatably disposed within the lock housing 2211. The two latches 2212 are driven by gear meshing. One end of the latches 2212 extends out of the lock housing 2211. The two latches 2212 remain closed under the drive of a torsion spring. When the latches 2212 contact the hook 11, the latches 2212 overcome the resistance of the torsion spring under the force of the hook 11, and the two latches 2212 automatically open. After the latches 2212 pass the hook 11, the latches 2212 return to the closed state under the action of the torsion spring. The locking mechanism 22 is locked onto the hook 11 by the latches 2212. Inside the lock housing 2211, a swing rod 222 is rotatably connected. One end of the swing rod 222 is driven by gear meshing with one of the latches 2212. One end of the swing rod 222 extends out of the lock housing 2211 and is opposite to the output end of the first hydraulic cylinder 231. When the first hydraulic cylinder 231 is activated, its output end pushes the swing rod 222 to swing, thereby opening the two latches 2212 and disengaging them from the lock hook 11. This drives the motor 211 to open, thus enabling the moving frame 2 to move smoothly toward the opening.

[0057] like Figure 10 As shown, specifically, in some embodiments, the actuating mechanism 24 includes a toggle block 241 and a lever 242. The toggle block 241 is connected to the clutch 214, and one end of the lever 242 is rotatably connected to the toggle block 241, while the other end is opposite to the rocker arm 222. Its middle portion is hinged to the movable frame 2. The toggle block 241 is also connected to a pull cable assembly 243, which includes a conduit 2432 and a wire core 2431 disposed within the conduit 2432. Figure 10 and 11 As shown, the two ends of the conduit 2432 are fixedly connected to the movable frame 2 and the recycling bin 1, respectively. One end of the wire core 2431 is fixedly connected to the lever 241, and the other end is connected to the handle 17 rotatably disposed outside the recycling bin 1. One end of the return spring 244 is connected to the lever 241, and the other end is connected to the movable frame 2. When the locking mechanism 22 on the movable frame 2 is locked in place with the locking hook 11, and the elevator is powered off or malfunctioning and requires maintenance or repair, rotating the handle 17 causes the wire core 2431 to move the lever 241 away from the output end of the drive motor 211, thereby disengaging the clutch 214, i.e., disengaging the drive motor 211 from the drive wheel 212. Simultaneously, the lever 241 drives the lever 242 to rotate, causing one end to abut against the swing arm 222, thus pushing the swing arm 222 to swing. The swing arm 222 separates the locking mechanism 22 from the locking hook 11, thus releasing the self-locking of the drive motor 211 on the movable frame 2 and the locking state of the locking mechanism 22 and the locking hook 11. By manually pulling the lifting platform 3, the lifting platform 3 and the movable frame 2 can be pulled out of the extended recovery chamber 1 for easy maintenance and repair. To avoid interference between the lever 242 and the output end of the first hydraulic cylinder 231, such as... Figure 10 As shown, the end of the lever 242 near the swing arm 222 and the output end of the first hydraulic cylinder 231 can be staggered vertically. When the lifting platform 3 is extended outside the recovery bin 1, and the elevator is powered off or malfunctions, the drive motor 211 can be disengaged from the drive wheel 212 by operating the handle 17, releasing the self-locking of the drive motor 211, allowing the lifting platform 3 and the moving frame 2 to be manually retracted into the recovery bin 1. During normal operation of the elevator, the return spring 244 can tighten the lever 241, keeping the clutch 214 between the drive wheel 212 and the output end of the drive motor 211 engaged, ensuring effective transmission between them. Through the structural design of the cable assembly 243, even when the moving frame 2 is in different states, the lever 241 can be driven by the handle 17, even if the cable assembly 243 is bent or slack.

[0058] To seal the hopper opening, improve the aesthetics of the equipment, and prevent external debris from entering the recycling hopper 1 and affecting its normal operation, in some embodiments, such as... Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 11 , Figure 15 , Figure 17 The hopper opening is rotatably equipped with a hopper door 12, and a first torsion spring is provided between the hopper opening and the hopper door 12. The first torsion spring is configured to cause the hopper door 12 to tend to flip towards the hopper opening; in some embodiments, such as Figure 15 and Figure 16As shown, a sliding block 13 is slidably disposed inside the recycling bin 1 near the locking hook 11. The sliding block 13 corresponds to the position of the lever 242 near the swing rod 222. One end of the cable 14 is connected to the sliding block 13 and the other end is connected to the bin door 12. When the locking mechanism 22 engages with the locking hook 11 to lock, the lever 242 abuts against the sliding block 13 and pushes the sliding block 13 toward the locking hook 11. The cable 14 is in a taut state, thereby pulling the bin door 12 tight at the bin opening. When the lever 242 swings, the lever 242 and the sliding block 13 are misaligned. When the movable frame 2 moves from the locked state toward the compartment opening, the lever 242 disengages from the sliding block 13. After the movable frame 2 moves a certain distance, the lifting platform 3 can push open the compartment door 12 and smoothly extend the recovery compartment 1. As the compartment door 12 flips open, the sliding block 13 also moves toward the compartment opening. When the movable frame 2 moves from the compartment opening toward the locking hook 11, after the lifting platform 3 is fully retracted into the recovery compartment 1, one end of the lever 242 abuts against the sliding block 13 and pushes the sliding block 13 to move toward the locking hook 11 together. Then, the cable 14 is used to tighten the compartment door 12 to prevent the compartment door 12 from overcoming the resistance of the first torsion spring and flipping over due to the bumps generated during vehicle travel, thus avoiding noise from impacting the compartment opening. When the elevator loses power or malfunctions, operating the handle 17 will disengage the drive wheel 212 from the drive motor 211 and the unlocking and locking mechanism 22, and at the same time, it will also disengage the lever 242 from the sliding block 13, so that the door 12 can be manually opened without being restricted by the tension of the cable 14, so that the lifting platform 3 and the moving frame 2 can be manually pulled out of the recovery compartment 1.

[0059] In some of these embodiments, such as Figure 15 As shown, the cable 14 is divided into two sections, which are connected by a tension spring 15. When the sliding block 13 moves toward the locking hook 11, the tension spring 15 is stretched. The elastic force of the tension spring 15 is used to tighten the cable 14 to the compartment door 12. Since the tension spring 15 is retractable, even if the operator accidentally flips the compartment door 12 by manual force, the cable 14 will not break. Or even if the sliding block 13 is stuck and cannot move, the compartment door 12 can be opened without damaging the cable 14.

[0060] Specifically, in order to drive the lifting platform 3 to rise and fall, while maintaining the horizontal state of the lifting platform 3 during the lifting process, such as Figure 13As shown, in some embodiments, the hydraulic lifting mechanism 25 includes a second cylinder 251, a swing arm 252, a drive rod 253, a first connecting rod 254, and a second connecting rod 255; one end of the swing arm 252 is hinged to the output end of the second cylinder 251, the other end is hinged to the drive rod 253, and the middle part is hinged to the movable frame 2; the cylinder body of the second cylinder 251 is hinged to the movable frame 2, and the drive rod 253 is connected to the first connecting rod 254; both ends of the first connecting rod 254 and the second connecting rod 255 are respectively hinged to the movable frame 2 and the lifting platform 3, and the first connecting rod 254 and the second connecting rod 255 are arranged in parallel. As the output end of the second hydraulic cylinder 251 extends and retracts, the drive arm 252 swings, which in turn drives the drive rod 253 to swing up and down. The up and down swing of the drive rod 253 drives the swing of the first connecting rod 254. Since the first connecting rod 254 and the second connecting rod 255 are arranged in parallel and both ends are hinged to the moving frame 2 and the lifting platform 3, forming a parallelogram mechanism, the swing of the first connecting rod 254 can drive the lifting platform 3 to rise and fall. During the rising and falling process, the lifting platform 3 remains in a horizontal state, which is convenient for stably supporting the wheelchair and avoids the safety hazard caused by the wheelchair sliding due to the tilt of the lifting platform 3.

[0061] As a further improvement to the above embodiments, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, in some embodiments, the end of the lifting platform 3 near the swing arm 252 is rotatably connected to a rear baffle 31 via a rotating shaft 311, and a swing block 32 is fixed on the rotating shaft 311; one end of the gas spring 33 is hinged to the swing block 32, and the other end is hinged to the lifting platform 3; when the gas spring 33 is configured such that its output end is below the line connecting the rotating shaft 311 and the hinge point between the gas spring 33 and the lifting platform 3, as... Figure 2 and Figure 5 As shown, the rear baffle 31 is in a folded state; when it is on top, as... Figure 8As shown, the rear panel 31 is in the open state. When the rear panel 31 is unfolded, it can overlap between the vehicle floor and the lifting platform 3 when the lifting platform 3 is in the high position, filling the gap between the two and allowing the wheelchair to be moved smoothly into the vehicle or from the vehicle to the lifting platform 3. When in the retracted state, the rear panel 31 is folded above the lifting platform 3, and under the pressure of the gas spring 33, the rear panel 31 is pressed tightly against the lifting platform 3, which can prevent the rear panel 31 from repeatedly hitting the lifting platform 3 and causing abnormal noises caused by the bumps during vehicle movement. When the lifting platform 3 is in the water level position, low position, and high position, the rear baffle 31 in the folded state can be manually flipped until the output end of the gas spring 33 is above the line connecting the pivot 311 and the hinge point between the gas spring 33 and the lifting platform 3. The gas spring 33 will then automatically push the rear baffle 31 to the unfolded state. Alternatively, the rear baffle 31 in the unfolded state can be manually flipped until the output end of the gas spring 33 is below the line connecting the pivot 311 and the hinge point between the gas spring 33 and the lifting platform 3. The gas spring 33 will then automatically push the rear baffle 31 to fold and press it tightly onto the lifting platform 3.

[0062] To further control the tilting angle of the rear baffle 31, in some embodiments, an angle control mechanism is also provided on one side of the lifting platform 3, such as... Figure 3 , Figure 6 and Figure 9 , Figure 14 and Figure 17 As shown, the angle control mechanism includes a third link 34, a cam 35, and a control arm 36, all hinged to the lifting platform 3. One end of the third link 34 has a first waist-shaped groove 341, and the other end has a second waist-shaped groove 342. A first control shaft 3411, fixedly connected to the first link 254, is slidably disposed within the first waist-shaped groove 341. A second control shaft 3421, fixedly connected to the cam 35, is slidably disposed within the second waist-shaped groove 342. During the lifting process of the lifting platform 3, the angle between the lifting platform 3 and the first link 254 changes, such as... Figure 3 , Figure 6 and Figure 9 As shown, during this process, the control shaft on the first link 254 can slide in the first waist-shaped groove 341 and cause the third link 34 to swing. The swing of the third link 34 can drive the second control shaft 3421 to slide in its second waist-shaped groove 342. The second control shaft 3421 drives the cam 35 to swing.

[0063] The end of the cam 35 away from the second control shaft 3421 has a guide surface, such as... Figure 3 , Figure 6 and Figure 9As shown, the end of the cam 35 away from the second control shaft 3421 has a fork-shaped structure. The upper fork arm is hinged to the side wall of the lifting platform 3, and the upper surface of the lower fork arm is set as the guide surface. The guide surface includes an arc surface 351 with the rotation center of the cam 35 and an extension surface 352 connected to the arc surface 351. The extension surface 352 extends in a direction away from the rotation center of the cam 35, and the arc surface 351 is closer to the second control shaft 3421 than the extension surface 352. One end of the control arm 36 is a hinge end 361, and the other end is a control end 362. The middle part has an abutment end 363. The hinge end 361 is hinged to the lifting platform 3, and the control end 362 is connected to the output end of the gas spring 33 through a pull rope. The abutment end 363 abuts against the guide surface. The abutment end 363 deviates from the line connecting the control end 362 and the hinge end 361 in a direction away from the second control shaft 3421. During the process of the hydraulic lifting mechanism 25 driving the lifting platform 3 from a horizontal position to a low position, or from a low position to a horizontal position, such as Figure 3 and 6 As shown, since the abutment end 363 of the control arm 36 moves relative to the arc surface 351, and the center of the arc surface 351 coincides with the rotation center of the cam 35, the rotation of the cam 35 does not drive the control arm 36 to swing. Therefore, as Figure 2 and 4 As shown, during the above process, if the rear panel 31 is in a folded state and the pull rope is in a slack state, the rear panel 31 and the pull rope remain in their original state; if the rear panel 31 is in an open state, the pull rope is in a taut state, and the pull rope keeps the rear panel 31 at a certain opening angle. The rotation of the cam 35 does not affect the opening angle of the rear panel 31. Normally, to ensure the lifting platform 3 has sufficient length to accommodate the wheelchair, the rear panel 31 should be flipped open before the wheelchair is pushed onto the lifting platform 3. The length of the pull rope should be controlled to make the rear panel 31 perpendicular to the lifting platform 3, thus releasing the length of the lifting platform 3 to accommodate the wheelchair and preventing the rear panel 31 from obstructing the wheelchair in the folded state. When the lifting platform 3 lifts the wheelchair together, the vertically positioned rear panel 31 also provides protection for the wheelchair, preventing it from slipping off the lifting platform 3 from the rear panel 31 position. During the process of the lifting platform 3 continuing to rise from the horizontal position to the high position, the cam 35 rotates further under the action of the swinging control arm 36, as... Figure 9 As shown, at this time, the abutment end 363 of the control arm 36 moves relative to the extension surface 352 of the cam 35. Since the extension surface 352 is a surface extending away from the rotation center of the cam 35, the control end 362 of the control arm 36 swings towards the rear baffle 31, as shown. Figure 8As shown, the output end of the gas spring 33 continues to extend away from the cam 35, pushing the swing block 32 to swing. As the cam 35 rotates, the output end of the gas spring 33 pushes the swing block 32 to swing further. The swing block 32 drives the rotating shaft 311 and the rear baffle 31 to rotate further, that is, the rear baffle 31 gradually unfolds until the lifting platform 3 rises to a high position basically level with the vehicle floor. At this point, the rear baffle 31 is fully unfolded and rests on the vehicle floor, allowing the wheelchair to move from the lifting platform 3 into the vehicle, passing through the rear baffle 31. During this process, the pull rope remains taut. By controlling the extension length of the gas spring 33's output end through the swing of the cam 35, the tilting angle and speed of the rear baffle 31 can be effectively controlled. The pull rope is lightweight and low-cost, effectively reducing the weight and cost of the lift. When the lifting platform 3 lowers from the high position to the horizontal position, the gas spring 33 retracts under the drive of the cam 35 and the pull rope, and the rear baffle 31 returns to the vertical position. During the movement of the lifting platform 3 from its horizontal position to its retraction position, the lifting platform 3 is pulled into the retraction chamber 1 by the moving frame 2. The rear baffle 31 is further flipped and folded under the push of the chamber opening or door 12. When the output end of the gas spring 33 is located below the line connecting the pivot 311 and the hinge point between the gas spring 33 and the lifting platform 3, the output end of the gas spring 33 extends again, keeping the rear baffle 31 in a folded state and pressing it tightly against the lifting platform 3. This not only avoids the rear baffle 31 from constantly hitting the lifting platform 3 or the retraction chamber 1 and generating noise due to bumps during travel, but also prevents the rear baffle 31 from tilting up and interfering with the structure inside the retraction chamber 1 during the process of the lifting platform 3 extending from inside the retraction chamber 1 to outside the retraction chamber 1, thus preventing the lifting platform 3 from extending normally. Alternatively, the rear baffle 31 can be manually flipped in the low position or horizontal position to flip the vertical rear baffle 31 to a folded state.

[0064] In the above embodiments, before the wheelchair is moved onto the lifting platform 3, the folded rear panel 31 needs to be manually flipped open. To achieve automatic opening of the rear panel 31, in some embodiments, such as... Figure 14 As shown, the end of the swing block 32 that is hinged to the gas spring 33 also has an extension end 324 that extends away from the pivot 311. When the rear baffle 31 is in the folded state, the extension end 324 is lower than the bottom of the lifting platform 3. When the lifting platform 3 descends to the low position and contacts the ground, the extension end 324 contacts the ground first. The ground exerts an upward thrust on the extension end 324, forcing the swing block 32 to swing. This causes the output end of the gas spring 33 to cross the line connecting the pivot 311 and the hinge point between the gas spring 33 and the lifting platform 3. The output end of the gas spring 33 then extends further, thereby flipping the rear baffle 31 to open to a vertical state. This achieves the purpose of flipping the rear baffle 31 from the folded state to the open state without manual operation.

[0065] In the above-described scheme for automatically opening the rear panel 31, the lifting platform 3 needs to first descend to a low position before the rear panel 31 can be opened automatically. This operation is required even when a wheelchair needs to be disembarked from the vehicle. However, disembarking involves first moving the lifting platform 3 from a retracted state to a horizontal position, then from a horizontal position to a low position to open the rear panel 31, and then rising from a low position to a horizontal position to a high position. The entire process is quite cumbersome. Therefore, this application also provides other schemes for automatically opening the rear panel 31. In some other embodiments, such as... Figure 17 and 18 As shown, a first gear 321 is fixed on the swing block 32, and a second gear 322 that meshes with the first gear 321 is rotatably arranged on the lifting platform 3. A stop arm 323 that is perpendicular to the rotating shaft 311 is fixed on the second gear 322.

[0066] A stop block 16 is rotatably provided inside the recycling bin 1. The stop block 16 is located near the bin opening. A stop bar 161 is provided on the side of the stop block 16 near the bin opening. The stop block 16 is also provided with a second torsion spring. The second torsion spring is configured to cause the stop bar 161 to tend to abut against the inner wall of the recycling bin 1.

[0067] When the lifting platform 3 retracts into the recovery chamber 1, the stop arm 323 contacts the side of the stop block 16 where the stop rod 161 is located. Since the rear baffle 31 has been manually folded or is in a folded state due to obstruction by the chamber door or opening, the folded rear baffle 31 cannot continue to fold or flip further due to the obstruction of the lifting platform 3. Therefore, the stop arm 323 can drive the stop block 16 to overcome the resistance of the second torsion spring and rotate the stop block 16. Thus, the stop arm 323 can pass over the stop block 16, and the rear stop block 16 rotates and resets in the opposite direction under the action of the reset force of the second torsion spring. Even if the rear baffle 31 is not in a folded state when the stop arm 323 contacts the stop block 16 during the retraction of the lifting platform 3 into the recovery chamber 1, the contact between the stop arm 323 and the stop block 16 is still beneficial to the folding of the rear baffle 31, and the stop arm 323 can also... When the lifting platform 3 extends from the recovery bin 1, the stop arm 323 contacts the other side of the stop block 16. At this time, at least part of the rear baffle 31 is located outside the recovery bin 1. Since the stop rod 161 abuts against the inner wall of the recovery bin 1, the stop rod 161 prevents the stop block 16 from rotating. Consequently, the stop block 16 forces the stop arm 323 to rotate. The rotation of the stop arm 323 drives the first gear 321 to rotate through the second gear 322, thereby causing the rear baffle 31 to rotate away from the lifting platform 3. Finally, the output end of the gas spring 33 crosses the line connecting the rotating shaft 311 and the hinge point between the gas spring 33 and the lifting platform 3. After the lifting platform 3 is fully extended from the recovery bin 1, the rear baffle 31 is in a vertically open state under the push of the gas spring 33, without the need for manual operation. When getting off the vehicle, it is not necessary to lower the lifting platform 3 to a low position first, but to directly rise from a horizontal position to a high position, which greatly simplifies the operation steps.

[0068] To further enhance security, in some embodiments, such as Figure 2 , Figure 4 , Figure 7 , Figure 14 and 17As shown, a front baffle 37 is rotatably mounted on the end of the lifting platform 3 away from the moving frame 2. A third hydraulic cylinder 38 is mounted on the end of the lifting platform 3 near the front baffle 37. One end of the third hydraulic cylinder 38 is hinged to the front baffle 37, and the other end is hinged to the lifting platform 3. The third hydraulic cylinder 38 is powered by the hydraulic station 26. When the lifting platform 3 descends to its low position, the rear baffle 31 is driven to unfold to a horizontal position by the third hydraulic cylinder 38, allowing the wheelchair to move onto the lifting platform 3. After the wheelchair moves onto the lifting platform 3, the rear baffle 31 is driven to flip to a vertical position by the third hydraulic cylinder 38, thereby blocking the wheelchair and preventing it from falling from the front of the lifting platform 3 during the lifting process, further improving the safety of the lifting machine. Since the front baffle 37 will come into contact with the ground and wear during use, it would be unsightly to use it as the closing structure of the compartment opening. Therefore, in some embodiments, the elevator includes both the front baffle 37 and the compartment door 12 in the above embodiments. In the recovery state, the front baffle 37 is completely stored in the recovery compartment 1, and the compartment opening is closed by the compartment door 12.

[0069] In addition, such as Figure 2 , Figure 4 and Figure 7 As shown, in some embodiments, handrails 39 can also be hinged to both sides of the lifting platform 3. When the lifting platform 3 extends outside the recovery compartment 1, the handrails 39 are flipped to a vertical position, allowing the person with disabilities in the wheelchair to maintain the stability of the wheelchair. When the lifting platform 3 needs to retract into the recovery compartment 1, as shown... Figure 1 As shown, simply fold the handrail 39 onto the lifting platform 3.

[0070] While the above disclosure is provided, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of this application.

Claims

1. A vehicle lift, characterized in that, include, The recycling bin (1) has an opening at one end and a locking hook (11) at the other end. The mobile frame (2) is slidably disposed in the recycling bin (1), and a locking mechanism (22) is provided at one end near the locking hook (11). The locking mechanism (22) cooperates with the locking hook (11) to lock the mobile frame (2) in the recycling bin (1). The unlocking mechanism (23), mounted on the movable frame (2), is configured to drive the locking mechanism (22) to disengage from the lock hook (11); The drive mechanism (21) includes a drive motor (211), a drive wheel (212), and a transmission unit (213). The drive motor (211) is connected to the drive wheel (212) via a clutch (214). The drive wheel (212) is connected to the transmission unit (213). The transmission unit (213) is fixed inside the recycling bin (1). A toggle mechanism (24) is configured to actuate a clutch (214) to disengage the output of the drive motor (211) from the drive wheel (212) and drive the locking mechanism (22) to disengage the locking mechanism (22) from the lock hook (11); The lifting platform (3), located at one end of the movable frame (2) away from the locking hook (11), is configured to be lifted by a hydraulic lifting mechanism (25) provided on the movable frame (2); The hydraulic station (26), fixedly mounted on the movable frame (2), is configured to provide hydraulic power to the hydraulic lifting mechanism (25).

2. The vehicle lift according to claim 1, characterized in that, The locking mechanism (22) is a paddle lock (221), one end of which has a rocker arm (222) for controlling the opening and closing of its locking tongue (2212). The unlocking mechanism (23) includes a first hydraulic cylinder (231) mounted on the movable frame (2). The output end of the first hydraulic cylinder (231) is opposite to the rocker arm (222). The first hydraulic cylinder (231) is powered by the hydraulic station (26).

3. The vehicle lift according to claim 2, characterized in that, The actuating mechanism (24) includes a lever (241) and a lever (242). The lever (241) is connected to the clutch (214). One end of the lever (242) is rotatably connected to the lever (241), and the other end is opposite to the rocker arm (222). The middle part is hinged to the moving frame (2). The lever (241) is also connected to a cable assembly (243), which includes a conduit (2432) and a cable. The wire core (2431) is installed inside the tube (2432). Both ends of the tube (2432) are fixedly connected to the moving frame (2) and the recycling bin (1) respectively. One end of the wire core (2431) is fixedly connected to the lever (241), and the other end is connected to the handle (17) rotatably installed outside the recycling bin (1). One end of the reset spring (244) is connected to the lever (241), and the other end is connected to the moving frame (2).

4. The vehicle lift according to claim 3, characterized in that, The hopper opening is provided with a rotatable door (12). A first torsion spring is provided between the hopper opening and the door (12). The first torsion spring is configured to cause the door (12) to tend to flip towards the hopper opening. A sliding block (13) is slidably provided at one end of the recovery hopper (1) near the locking hook (11). The sliding block (13) corresponds to the position of the lever (242) near the swing rod (222). One end of the cable (14) is connected to the sliding block (13) and the other end is connected to the door (12). When the locking mechanism (22) and the locking hook (11) are engaged and locked, the lever (242) abuts against the sliding block (13) and pushes the sliding block (13) to slide towards the locking hook (11). The cable (14) is in a taut state. When the lever (242) swings, the lever (242) and the sliding block (13) are misaligned.

5. The vehicle lift according to claim 1, characterized in that, The hydraulic lifting mechanism (25) includes a second cylinder (251), a swing arm (252), a drive rod (253), a first connecting rod (254), and a second connecting rod (255); One end of the swing arm (252) is hinged to the output end of the second oil cylinder (251), the other end is hinged to the drive rod (253), and the middle part is hinged to the moving frame (2); the cylinder body of the second oil cylinder (251) is hinged to the moving frame (2), and the drive rod (253) is connected to the first connecting rod (254); both ends of the first connecting rod (254) and the second connecting rod (255) are respectively hinged to the moving frame (2) and the lifting platform (3), and the first connecting rod (254) and the second connecting rod (255) are arranged in parallel.

6. The vehicle lift according to claim 5, characterized in that, The lifting platform (3) is rotatably connected to a rear baffle (31) via a pivot (311) at one end near the swing arm (252). A swing block (32) is fixed on the pivot (311). One end of the gas spring (33) is hinged to the swing block (32), and the other end is hinged to the lifting platform (3). When the gas spring (33) is configured such that its output end is below the line connecting the pivot (311) and the hinge point between the gas spring (33) and the lifting platform (3), the rear baffle (31) is in a folded state, and when it is above, the rear baffle (31) is in an open state.

7. The vehicle lift according to claim 6, characterized in that, An angle control mechanism is also provided on one side of the lifting platform (3). The angle control mechanism includes a third link (34), a cam (35), and a control arm (36) that are all hinged to the lifting platform (3). One end of the third link (34) is provided with a first waist-shaped groove (341), and the other end is provided with a second waist-shaped groove (342). A first control shaft (3411) fixedly connected to the first link (254) is slidably provided in the first waist-shaped groove (341). A second control shaft (3421) fixedly connected to the cam (35) is slidably provided in the second waist-shaped groove (342). The end of the cam (35) away from the second control shaft (3421) has a guide surface. The guide surface includes an arc surface (351) with the center of rotation of the cam (35) as the center and an extension surface (352) connected to the arc surface (351). The extension surface (352) extends in a direction away from the center of rotation of the cam (35). The control arm (36) has a hinged end (361) at one end and a control end (362) at the other end, and an abutment end (363) in the middle. The hinged end (361) is hinged to the lifting platform (3), the control end (362) is connected to the output end of the gas spring (33) through a pull rope, and the abutment end (363) abuts against the guide surface.

8. The vehicle lift according to claim 7, characterized in that, The swing block (32) is hinged to the gas spring (33) at one end and has an extension end (324) extending away from the pivot (311). When the rear baffle (31) is in a folded state, the extension end (324) is lower than the bottom of the lifting platform (3).

9. The vehicle lift according to claim 7, characterized in that, The swing block (32) is fixed with a first gear (321), and the lifting platform (3) is rotatably provided with a second gear (322) that meshes with the first gear (321). The second gear (322) is fixed with a stop arm (323) that is perpendicular to the rotating shaft (311). A stop block (16) is rotatably provided inside the recycling bin (1). The stop block (16) is located near the bin opening. A stop bar (161) is provided on the side of the stop block (16) near the bin opening. The stop block (16) is also provided with a second torsion spring. The second torsion spring is configured to cause the stop bar (161) to tend to abut against the inner wall of the recycling bin (1). The stop block (16) is configured such that when the lifting platform (3) retracts into the recovery bin (1), the stop arm (323) contacts one side of the stop block (16) and drives the stop block (16) to rotate; when the lifting platform (3) extends out of the recovery bin (1), the stop arm (323) contacts the other side of the stop block (16), and the stop block (16) drives the stop arm (323) to rotate; when the stop arm (323) contacts the stop block (16), at least part of the rear baffle (31) is located outside the recovery bin (1).

10. The vehicle lift according to claim 1, characterized in that, The lifting platform (3) is rotatably provided with a front baffle (37) at one end away from the moving frame (2). A third oil cylinder (38) is provided at one end of the lifting platform (3) near the front baffle (37). One end of the third oil cylinder (38) is hinged to the front baffle (37), and the other end is hinged to the lifting platform (3). The third oil cylinder (38) is provided with hydraulic power by the hydraulic station (26).

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