Safety lifting device for new energy automobile maintenance

Abstract

The utility model provides a safety lifting device for new energy automobile maintenance, and belongs to the technical field of automobile maintenance equipment. The safety lifting device for new energy automobile maintenance comprises a frame, a bearing frame, a driving part and an unlocking part, the bearing frame is slidably connected with the frame, a lead screw is rotationally connected to the frame and is in threaded connection with the bearing frame, the driving part drives the lead screw to rotate, a ratchet mechanism is connected to the lower end of the lead screw through a shaft, and the ratchet mechanism is in threaded connection with the bearing frame. And the unlocking piece is connected with a pawl of the ratchet mechanism. In the application, the ratchet mechanism is utilized to enable the lead screw to rotate in one direction, abnormal falling of the bearing frame caused by reverse rotation of the lead screw can be prevented, meanwhile, the bearing frame can stop at any height at will and is convenient to use in a lead screw driving mode, and the ratchet mechanism is unlocked through the unlocking piece, so that the bearing frame can fall normally.

Description

Technical Field

[0001] The present application relates to the technical field of automobile maintenance equipment, and in particular to a safety lifting device for maintenance of new energy vehicles. Background Art

[0002] When repairing the bottom battery of a new energy vehicle, a lifting device is needed to lift the entire vehicle so that maintenance personnel can inspect and repair it under the vehicle.

[0003] In this regard, China's patent application number is CN2022222222043.7, which discloses a whole vehicle lifting device for repairing new energy vehicles. This solution mainly sets a rotating column under the weighing platform, rotates the rotating column to a vertical direction, and then inserts one end of the connecting bolt into the positioning hole through the cooperation of the connecting bolt and the positioning hole to fix the rotating column. The rotating column is used to support the weighing platform, which can effectively prevent the lifting device from having an accident. If there is a problem, the load-bearing platform can be limited to protect the maintenance personnel working under the lifting device.

[0004] However, in the process of implementing the technical solution in the embodiments of the present application, the inventor of the present application found that the above technology has at least the following technical problems:

[0005] The height of the rotating column is fixed, and the weighing platform can only be limited to a specific height. It cannot be adjusted to any height, which is not convenient to use. Utility Model Content

[0006] In order to make up for the above shortcomings, the present application provides a safe lifting device for repairing new energy vehicles, aiming to improve the problems mentioned in the above background technology.

[0007] An embodiment of the present application provides a safe lifting device for repairing new energy vehicles, including a frame, a load-bearing frame, a driving member and an unlocking member. The load-bearing frame is slidably connected to the frame, a screw rod is rotatably connected to the frame, the screw rod is screwed to the load-bearing frame, the driving member drives the screw rod to rotate, a ratchet mechanism is connected to the lower end shaft of the screw rod, and the unlocking member is connected to a pawl of the ratchet mechanism.

[0008] In a specific embodiment, the frame includes a top plate and a bottom plate, four guide rods are fixedly connected to the bottom plate, upper ends of the guide rods are fixedly connected to the top plate, and the load-bearing frame is slidably connected to the guide rods.

[0009] In the above implementation process, the guide rod is used to help stabilize the load-bearing frame, reduce tilting, and avoid slipping.

[0010] In a specific embodiment, the driving member includes a motor and a gear, the motor is mounted on the top plate, and the output end of the motor is connected to the screw shaft through the gear.

[0011] In a specific implementation manner, two screw rods are provided, the motor is a double-headed arrangement, and the two output ends of the motor are respectively connected to the two screw rod shafts through the corresponding gears.

[0012] In the above implementation process, the double-headed motor drives the two screws to rotate synchronously through two sets of gears, which is beneficial to the balance of the load-bearing frame during the lifting process.

[0013] In a specific implementation, the load-bearing frame includes a U frame, one side of the U frame is telescopically connected to a support plate, and a spring pin is provided on the U frame to be pin-connected to the support plate.

[0014] In the above implementation process, the extension and retraction amount of the pallet is adjusted according to the wheelbase of the vehicle, and then the pallet is locked using a spring pin. The wheels on one side of the car are on the U-frame, and the wheels on the other side of the car are on the pallet, which can adapt to different car series.

[0015] In a specific implementation manner, anti-slip strips are provided on both the U frame and the support plate.

[0016] In the above implementation process, the anti-skid strip is used to keep the vehicle stable on the load-bearing frame to prevent the vehicle from slipping.

[0017] In a specific embodiment, a slope is arranged in front of the frame.

[0018] In the above implementation process, the car is driven onto the load-bearing frame via a ramp.

[0019] In a specific embodiment, the unlocking member includes a foot pump and a hydraulic cylinder. The foot pump is arranged on the base plate, the foot pump is connected to the hydraulic cylinder, and the telescopic end of the hydraulic cylinder is movably pressed against the pawl of the ratchet mechanism.

[0020] In the above implementation process, the pawl is pressed against the ratchet by a spring, and the ratchet rotates with the rotation of the screw. When the screw pushes the load-bearing frame to rise, the ratchet pushes the pawl to rotate forward. When the motor is out of control or cannot prevent the screw from reversing, the screw drives the ratchet to reverse, and the pawl presses against the ratchet, thereby locking the rotation of the screw, thereby playing a locking role. When everything is normal and the vehicle needs to be lowered, the foot pump is manually stepped on to push the hydraulic cylinder, and the hydraulic cylinder pushes the pawl away, so that the screw can reverse normally. If an abnormality occurs during the normal descent process, just release the foot pump, the foot pump will naturally reset, and at the same time the hydraulic cylinder will retract, and the pawl will lock the ratchet here, which has a higher safety.

[0021] Compared with the prior art, the beneficial effects of the present application are: the ratchet mechanism is used to make the screw rod rotate unidirectionally, which can prevent the screw rod from reversing and causing the load-bearing frame to fall abnormally. At the same time, the screw rod is driven in such a way that the load-bearing frame can be stopped at any height at will, which is convenient for use. The ratchet mechanism is unlocked by the unlocking piece, so that the load-bearing frame can descend normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a first-perspective schematic diagram of a safety lifting device for repairing new energy vehicles provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a second perspective of a safety lifting device for repairing new energy vehicles provided in an embodiment of the present application;

[0025] Figure 3 Provided for the implementation of this application Figure 1 A partial enlarged schematic diagram in the middle;

[0026] Figure 4 Provided for the implementation of this application Figure 2 A partial enlarged schematic diagram of point B in the middle.

[0027] In the figure: 10-frame; 11-top plate; 12-bottom plate; 13-guide rod; 20-load-bearing frame; 21-U frame; 22-support plate; 23-anti-slip strip; 24-spring pin; 30-driving member; 31-motor; 32-gear; 40-unlocking member; 41-foot pump; 42-hydraulic cylinder; 50-screw rod; 60-ramp; 70-ratchet mechanism. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0029] See also Figure 1-Figure 4The present application provides a safety lifting device for new energy vehicle maintenance, including a frame 10, a load-bearing frame 20, a driving member 30 and an unlocking member 40. The load-bearing frame 20 is slidably connected to the frame 10, a screw rod 50 is rotatably connected to the frame 10, the screw rod 50 is screwed to the load-bearing frame 20, the driving member 30 drives the screw rod 50 to rotate, the lower end shaft of the screw rod 50 is connected to a ratchet mechanism 70, and the unlocking member 40 is connected to the ratchet of the ratchet mechanism 70. Among them, the use of the ratchet mechanism 70 to make the screw rod 50 rotate in one direction can prevent the screw rod 50 from reversing and causing the load-bearing frame 20 to fall abnormally. At the same time, the drive mode of the screw rod 50 allows the load-bearing frame 20 to stop at any height at will, which is convenient for use. The ratchet mechanism 70 is unlocked by the unlocking member 40, so that the load-bearing frame 20 can descend normally.

[0030] See also Figure 1-Figure 4 The frame 10 includes a top plate 11 and a bottom plate 12, four guide rods 13 are fixedly connected to the bottom plate 12, the upper ends of the guide rods 13 are fixedly connected to the top plate 11, and the load-bearing frame 20 is slidably connected to the guide rods 13. The guide rods 13 are used to help stabilize the load-bearing frame 20, reduce tilting, and avoid slipping.

[0031] See also Figure 1-Figure 4 The driving member 30 includes a motor 31 and a gear 32. The motor 31 is mounted on the top plate 11. The output end of the motor 31 is connected to the screw rod 50 through the gear 32. There are two screw rods 50. The motor 31 is double-headed. The two output ends of the motor 31 are connected to the two screw rods 50 through corresponding gears 32. The double-headed motor 31 drives the two screw rods 50 to rotate synchronously through two sets of gears 32, which is beneficial to the balance of the load-bearing frame 20 during the lifting process.

[0032] See also Figure 1-Figure 4 The load-bearing frame 20 includes a U frame 21, one side of the U frame 21 is telescopically connected to a support plate 22, and a spring pin 24 is provided on the U frame 21 to be pinned to the support plate 22. The telescopic amount of the support plate 22 is adjusted according to the wheelbase of the vehicle, and then the support plate 22 is locked by the spring pin 24. The wheels on one side of the car are on the U frame 21, and the wheels on the other side of the car are on the support plate 22, which can adapt to different car series.

[0033] See also Figure 1-Figure 4 , anti-skid strips 23 are provided on the U frame 21 and the supporting plate 22. The anti-skid strips 23 are used to keep the vehicle stable on the load-bearing frame 20 to avoid slipping.

[0034] See also Figure 1-Figure 4 A ramp 60 is provided in front of the frame 10. The car drives onto the load-bearing frame 20 via the ramp 60.

[0035] See also Figure 1-Figure 4The unlocking member 40 includes a foot pump 41 and a hydraulic cylinder 42. The foot pump 41 is arranged on the bottom plate 12. The foot pump 41 is connected to the hydraulic cylinder 42. The telescopic end of the hydraulic cylinder 42 is movably pressed against the ratchet of the ratchet mechanism 70. The ratchet is pressed against the ratchet by a spring. The ratchet rotates with the rotation of the screw rod 50. When the screw rod 50 pushes the load-bearing frame 20 to rise, the ratchet pushes the ratchet to rotate forward. When the motor 31 is out of control or cannot prevent the screw rod 50 from reversing, the screw rod 50 drives the ratchet to reverse, and the ratchet is pressed against the ratchet, thereby locking the rotation of the screw rod 50, playing a locking role. When everything is normal and the vehicle needs to be lowered, the foot pump 41 is manually stepped on to push the hydraulic cylinder 42. The hydraulic cylinder 42 pushes the ratchet away, so that the screw rod 50 can reverse normally. If an abnormality occurs during the normal descent process, just release the foot pump 41, the foot pump 41 will naturally reset, and the hydraulic cylinder 42 will retract at the same time, and the ratchet will lock the ratchet here, which is safer.

[0036] The working principle of the safety lifting device for new energy vehicle maintenance is as follows: the extension and contraction amount of the support plate 22 is adjusted according to the wheelbase of the vehicle, and then the support plate 22 is locked by using the spring pin 24. The vehicle is driven onto the load-bearing frame 20 through the ramp 60, and the wheels on one side of the vehicle are on the U frame 21, while the wheels on the other side of the vehicle are on the support plate 22. The double-headed motor 31 drives the two screw rods 50 to rotate synchronously in the positive direction through two teams of gears 32, which is beneficial to the balance of the load-bearing frame 20 during the lifting process. At the same time, the ratchet pushes the pawl to rotate in the positive direction. When the motor 31 is out of control or cannot prevent the screw rod 50 from reversing, the screw rod 50 drives the ratchet to reverse, and the pawl hits the ratchet, thereby locking the rotation of the screw rod 50, thereby playing a locking role. When everything is normal and the vehicle needs to be lowered, the foot pump 41 is manually stepped on to push the hydraulic cylinder 42, and the hydraulic cylinder 42 pushes the pawl open, so that the screw rod 50 can reverse normally. If an abnormality occurs during the normal descent, just release the foot pump 41, the foot pump 41 will naturally reset, and at the same time the hydraulic cylinder 42 will retract, and the pawl will lock the ratchet here, which is safer. In summary, the ratchet mechanism 70 is used to make the screw rod 50 rotate in one direction, which can prevent the screw rod 50 from reversing and causing the load-bearing frame 20 to fall abnormally. At the same time, the drive method of the screw rod 50 allows the load-bearing frame 20 to stop at any height at will, which is easy to use. The ratchet mechanism 70 is unlocked by the unlocking member 40, so that the load-bearing frame 20 can descend normally.

[0037] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, improvement or equivalent replacement made within the spirit and principle of the present application shall be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A safety lifting device for new energy vehicle maintenance, characterized in that: The invention comprises a frame (10), a load-bearing frame (20), a driving member (30) and an unlocking member (40); the load-bearing frame (20) is slidably connected to the frame (10); a screw rod (50) is rotatably connected to the frame (10); the screw rod (50) is threadedly connected to the load-bearing frame (20); the driving member (30) drives the screw rod (50) to rotate; a ratchet mechanism (70) is connected to the lower end shaft of the screw rod (50); and the unlocking member (40) is connected to a ratchet pawl of the ratchet mechanism (70).

2. A safety lifting device for maintenance of new energy vehicles according to claim 1, characterized in that: The frame (10) comprises a top plate (11) and a bottom plate (12); four guide rods (13) are fixedly connected to the bottom plate (12); the upper ends of the guide rods (13) are fixedly connected to the top plate (11); and the load-bearing frame (20) is slidably connected to the guide rods (13).

3. A safety lifting device for maintenance of new energy vehicles according to claim 2, characterized in that: The driving member (30) comprises a motor (31) and a gear (32); the motor (31) is mounted on the top plate (11); and the output end of the motor (31) is connected to the shaft of the screw rod (50) via the gear (32).

4. A safety lifting device for maintenance of new energy vehicles according to claim 3, characterized in that: Two screw rods (50) are provided, and the motor (31) is a double-headed arrangement. The two output ends of the motor (31) are respectively connected to the two screw rod (50) shafts through the corresponding gears (32).

5. A safety lifting device for maintenance of new energy vehicles according to claim 4, characterized in that: The load-bearing frame (20) comprises a U frame (21), one side of the U frame (21) is telescopically connected to a support plate (22), and a spring pin (24) is provided on the U frame (21) and is pin-connected to the support plate (22).

6. A safety lifting device for maintenance of new energy vehicles according to claim 5, characterized in that: Anti-slip strips (23) are provided on both the U frame (21) and the support plate (22).

7. A safety lifting device for maintenance of new energy vehicles according to claim 6, characterized in that: A slope (60) is arranged in front of the frame (10).

8. A safety lifting device for maintenance of new energy vehicles according to claim 7, characterized in that: The unlocking member (40) comprises a foot pump (41) and a hydraulic cylinder (42); the foot pump (41) is arranged on the base plate (12); the foot pump (41) is connected to the hydraulic cylinder (42); and the telescopic end of the hydraulic cylinder (42) is movably pressed against a ratchet pawl of the ratchet mechanism (70).

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