Automobile lifting machine device for new energy automobile battery maintenance

Abstract

The invention relates to the technical field of vehicle equipment, in particular to an automobile lifting machine device for new energy automobile battery maintenance. The device comprises two cross beams, an automobile is arranged between the two cross beams, four tires are arranged at the bottom of the automobile, turnover plates are hinged to the upper surfaces of the cross beams, two clamping jaws are fixedly connected to the two ends of the sides, close to each other, of the two turnover plates, and the four tires of the automobile are arranged in the corresponding clamping jaws respectively. And an air blowing mechanism is arranged at the top of the cross beam. According to the automobile lifting machine device for new energy automobile battery overhaul, when a first hydraulic cylinder breaks down, and a piston rod of the first hydraulic cylinder retracts under the heavy pressure of an automobile, a rotating disc drives a plurality of arc-shaped clamping teeth to rotate rapidly, so that the arc-shaped clamping teeth are clamped into corresponding clamping grooves under the action of centrifugal force, and then the automobile is lifted; therefore, the piston rod of the damaged first hydraulic cylinder is prevented from continuing to retract, and the situation that the automobile suddenly descends to the lowest position from the high position, and personal safety of maintenance personnel below the automobile is endangered is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle equipment, and in particular to a vehicle lifting device for repairing batteries of new energy vehicles. Background Art

[0002] New energy vehicles are the current development trend of the automotive industry. More and more people choose to buy new energy vehicles. As the number of new energy vehicles gradually increases, the demand for maintenance of new energy vehicles also increases.

[0003] At present, the maintenance equipment for new energy vehicles in the existing technology is the same as that for ordinary gasoline vehicles. However, in addition to the same parts maintenance as ordinary gasoline vehicles, new energy vehicles also need maintenance for vehicle circuits and power battery packs. During the maintenance of the power battery pack, the power battery pack needs to be disassembled. When disassembling the power battery pack, the car needs to be lifted to a high place, and the maintenance personnel enter under the car in a lying position to perform maintenance work.

[0004] The lifting equipment in the prior art usually lifts the car by using a hydraulic cylinder as a power source. The hydraulic cylinder is prone to malfunction after long-term use. For example, patent CN1786490A discloses a hydraulic cylinder safety device, which limits the piston rod through a one-way valve. However, when the oil circuit is blocked and the one-way valve system fails, the hydraulic cylinder will retract under the heavy pressure, posing a great safety risk. When the hydraulic cylinder lifts the car to a high place and the maintenance personnel are performing maintenance under the car, if the one-way valve system of the hydraulic cylinder fails and causes its piston rod to retract under the heavy pressure of the car, the lowered car will endanger the personal safety of the maintenance personnel. At the same time, when the maintenance personnel are carrying out maintenance work under the car, the faulty battery is prone to produce harmful gases. The harmful gases accumulated under the car will be inhaled by the maintenance personnel in large quantities, endangering the health of the maintenance personnel. In view of this, we propose a car lifting device for repairing new energy vehicle batteries. Summary of the invention

[0005] The purpose of the present invention is to provide a car lift device for repairing new energy vehicle batteries to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, a car lift device for repairing new energy vehicle batteries is provided, comprising two cross beams, a car is arranged between the two cross beams, four tires are arranged at the bottom of the car, a flip plate is hinged on the upper surface of the cross beam, two claws are fixedly connected at the two ends of one side where the two flip plates are close to each other, and the four tires of the car are respectively arranged in the corresponding claws, a blower mechanism is arranged on the top of the cross beam, and the blower mechanism is used to blow air to the bottom of the car, and two first hydraulic cylinders are symmetrically fixedly connected at the positions near the two ends of the top of the cross beam The lower end of the piston rod of the first hydraulic cylinder passes through the cross beam and is rotatably connected to a support plate. When the piston rod of the first hydraulic cylinder extends and drives the support plate to move vertically downward, so that the lower surface of the support plate touches the ground, the first hydraulic cylinder drives the cross beam to move vertically upward through a reaction force, and the cross beam drives the flip plate and the claw to move upward, so that the claw drives the car to move upward synchronously. A locking mechanism is provided on the side wall of the piston rod of the first hydraulic cylinder. When the first hydraulic cylinder fails and causes the piston rod of the first hydraulic cylinder to retract under the heavy pressure of the car, the locking mechanism prevents the piston rod of the first hydraulic cylinder from retracting.

[0007] As a further improvement of the technical solution, the blowing mechanism includes an air pump fixedly connected to the top of the beam, a hose fixedly connected to one side of the air pump, a diversion chamber is provided inside the beam, and a plurality of first air outlet slots are provided in a transverse array on one side where two beams are close to each other, and the plurality of first air outlet slots are all connected to the interior of the diversion chamber, and one end of the hose passes through the beam and extends to the interior of the diversion chamber.

[0008] As a further improvement of the present technical solution, the locking mechanism includes a rack fixedly connected to the piston rod of the first hydraulic cylinder, the rack is arranged above the abutment plate, one end of the rack passes through the cross beam and extends to the upper side of the cross beam, the rack and the cross beam are slidingly arranged, the upper surface of the cross beam is rotatably connected to a gear through a rotating shaft, the gear is meshed with one side of the rack, the upper surface of the cross beam is fixedly connected to a shell, one end of the gear rotating shaft is fixedly connected to a turntable, the turntable is arranged inside the shell, and the gear rotating shaft is rotatably arranged with the side wall of the shell.

[0009] As a further improvement of the technical solution, a plurality of arc-shaped teeth are rotatably connected to an annular array on one side of the turntable, a bolt is provided on the side of the arc-shaped teeth close to the gear shaft, the bolt consists of a screw rod fixedly connected to the side wall of the arc-shaped teeth and a head fixedly connected to one end of the screw rod, a plurality of sleeve blocks are fixedly connected to an annular array on one side of the arc-shaped teeth, the screw rod is arranged inside the sleeve block, and a spring is fixedly connected between the head and the sleeve block.

[0010] As a further improvement of the present technical solution, a plurality of slots are provided in a circular array on the inner wall of the shell, and the slots are arc-shaped slots extending away from the turntable, and a notch is formed between the slots at the farthest point from the turntable and the inner wall of the shell. When the turntable drives a plurality of arc-shaped teeth to rotate at high speed, the arc-shaped teeth rotate in a direction away from the sleeve block under the action of centrifugal force, the distance between the head and the sleeve block is shortened, the spring elastically contracts, and one end of the rotated arc-shaped tooth is driven by the turntable to be inserted into the corresponding slot.

[0011] As a further improvement of the present technical solution, an annular air duct is provided inside the shell, and the annular air duct is arranged on the outside of several card slots, and several second connecting grooves are provided in an annular array on the inner wall of the shell near the card slots, and the second connecting grooves connect the annular air duct with the interior of the shell, and several second air outlet grooves are provided on one side of the shell near the center, and the second air outlet grooves are connected to the interior of the shell, and a first connecting groove is provided at the bottom of the shell and the top of the cross beam, and the first connecting groove connects the annular air duct with the interior of the diversion cavity.

[0012] As a further improvement of the technical solution, two through pipes are fixedly connected to the top of the shell, and the through pipes are connected to the interior of the annular air duct. A whistle is fixedly connected to the interior of one of the through pipes, and a fan is rotatably connected to the interior of the other through pipe. The fan is provided with a plurality of blades with different colors.

[0013] As a further improvement of the present technical solution, when one end of the arc-shaped tooth is inserted into the corresponding slot opening, the arc-shaped tooth is in close contact with the corresponding inner wall of the slot, and the arc-shaped tooth blocks the corresponding second connecting groove, so that the airflow in the annular air duct cannot enter the interior of the shell through the second connecting groove.

[0014] As a further improvement of the technical solution, a plurality of universal wheels are installed on the lower surface of the crossbeam, and the plurality of universal wheels are distributed in a rectangular array, and the bottom ends of the universal wheels are located below the abutment plate.

[0015] As a further improvement of the technical solution, one end of the flip plate away from the hinged connection between the flip plate and the crossbeam is hinged to a second hydraulic cylinder, and the other end of the second hydraulic cylinder is hinged to the upper surface of the crossbeam.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the car lift device for repairing new energy vehicle batteries, when the first hydraulic cylinder fails, causing the piston rod of the first hydraulic cylinder to retract under the heavy pressure of the car, the turntable drives a number of arc-shaped teeth to rotate rapidly, so that the arc-shaped teeth are stuck into the corresponding slots under the action of centrifugal force, thereby preventing the piston rod of the damaged first hydraulic cylinder from continuing to retract, preventing the car from suddenly falling from a high place to the lowest place, endangering the personal safety of maintenance personnel under the car.

[0018] 2. In the car lift device for repairing new energy vehicle batteries, when the maintenance personnel repair the battery under the car, the air pump pumps air into the diversion cavity, and blows the air to the bottom of the car through the first air outlet slot, so that the air under the car is quickly exchanged with the air in the external environment, avoiding the maintenance personnel from inhaling a large amount of harmful gases during work, protecting the health of the maintenance personnel and improving the work efficiency of the maintenance personnel.

[0019] 3. In the car lift device for repairing new energy vehicle batteries, when the corresponding arc-shaped teeth are inserted into the corresponding slots to prevent the piston rod of the faulty first hydraulic cylinder from retracting, the fan speed in the corresponding locking mechanism is accelerated and the loudness of the whistle is increased. The maintenance personnel can quickly lock the damaged first hydraulic cylinder by judging whether the fan speed is increased and listening to whether the whistle is louder, thereby speeding up the speed at which the maintenance personnel can find the damaged hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the crossbeam of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the blowing mechanism of the present invention;

[0023] Figure 4 is one of the cross-sectional views of the crossbeam of the present invention;

[0024] Figure 5 The second cross-sectional view of the crossbeam of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the present invention after the clamping claw is raised;

[0026] Figure 7 For the present invention Figure 4 Schematic diagram of the local structure;

[0027] Figure 8 It is a structural schematic diagram of the locking mechanism of the present invention;

[0028] Fig. 9 is one of the cross-sectional views of the housing of the present invention;

[0029] Fig.10 The second cross-sectional view of the housing of the present invention;

[0030] Fig.11 The third cross-sectional view of the housing of the present invention;

[0031] Fig.12 It is a schematic structural diagram of the arc-shaped latching tooth of the present invention when it is latched into the interior of the latching slot.

[0032] The meaning of each number in the figure is:

[0033] 1. crossbeam; 11. universal wheel; 12. diversion cavity; 13. first air outlet slot; 14. first connecting slot;

[0034] 2. First hydraulic cylinder; 3. Butt plate; 4. Turning plate; 5. Second hydraulic cylinder; 6. Clamping claw;

[0035] 7. Locking mechanism; 71. Rack; 72. Gear;

[0036] 73, housing; 732, second air outlet slot; 733, through pipe; 734, fan; 735, whistle; 736, slot; 737, annular air duct; 738, second connecting slot;

[0037] 74. arc-shaped tooth; 75. sleeve block; 76. bolt; 77. spring; 78. turntable;

[0038] 8. Blowing mechanism; 81. Air pump; 82. Hose. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] Example 1

[0043] See also Figure 1-Figure 2 As shown, a car lift device for repairing new energy vehicle batteries is provided, comprising two cross beams 1, a car is arranged between the two cross beams 1, four tires are arranged at the bottom of the car, a flip plate 4 is hingedly connected to the upper surface of the cross beam 1, two claws 6 are fixedly connected at the two ends of the side close to each other, the four tires of the car are respectively arranged inside the corresponding claws 6, the claws 6 prevent the tires of the car from moving, two first hydraulic cylinders 2 are symmetrically fixedly connected at the top of the cross beam 1 near the two ends, the lower end of the piston rod of the first hydraulic cylinder 2 passes through the cross beam 1 and is rotatably connected to a stop plate 3, when the car needs to be lifted upward, it is convenient for maintenance personnel to lift the car upward. The maintenance personnel enter the bottom of the car in a lying position so that they can inspect the battery installed at the bottom of the car. At this time, the car is driven to a platform above the ground, and the parts of the car tires that are close to each other are made to contact the upper surface of the platform, and the rest of the tires are exposed on the outside of the platform, that is, half of the tires are in a suspended state, and then the two crossbeams 1 are moved to both sides of the car respectively. The maintenance personnel manually push the crossbeams 1 so that the four claws 6 are respectively in contact with the side walls of the four tires of the car, so that the parts of the tires exposed on the outside of the platform are received by the claws 6. After the claws 6 are placed in the right position, the car can be jacked up, so that the maintenance personnel can easily enter the bottom of the car. At this time, refer to Figure 6 , rotate the butt plate 3 to a state perpendicular to the cross beam 1, so that the piston rod of the first hydraulic cylinder 2 extends and drives the butt plate 3 to move vertically downward. When the lower surface of the butt plate 3 touches the ground, the first hydraulic cylinder 2 drives the cross beam 1 to move vertically upward through the reaction force, and the cross beam 1 drives the flip plate 4 and the claw 6 to move upward, so that the claw 6 drives the car to move upward synchronously. The rotated butt plate 3 changes the angle of supporting the cross beam 1, improves the stability of the placement of the cross beam 1, so that the four claws 6 can stably support the car moved to a high place, so as to facilitate maintenance personnel to inspect the battery installed at the bottom of the car.

[0044] In order to facilitate moving the beam 1 to both sides of the car, a plurality of universal wheels 11 are installed on the lower surface of the beam 1, and the plurality of universal wheels 11 are distributed in a rectangular array, and the bottom end of the universal wheel 11 is located below the stop plate 3. By making the universal wheel 11 touch the ground, the beam 1 can be moved more effortlessly.

[0045] In order to enable maintenance personnel to inspect the battery module at the bottom of the car from a better perspective, a second hydraulic cylinder 5 is hingedly connected to one end of the flip plate 4 away from the hinged joint between the flip plate 4 and the cross beam 1, and the other end of the second hydraulic cylinder 5 is hingedly connected to the upper surface of the cross beam 1. Figure 6 When the cross beam 1 and the claw 6 move vertically upward and lift the car to a high place, the piston rod of the second hydraulic cylinder 5 is extended, driving the flip plate 4 and the claw 6 to rotate and move upward. The claw 6 drives the car to rotate at a small angle, so that the chassis of the car is turned to a tilted state, so that maintenance personnel can inspect the battery module at the bottom of the car from a better perspective.

[0046] When maintenance personnel lie down and enter under the car to carry out maintenance work, harmful gases are easily generated due to abnormal temperature rise when the car battery fails. If the harmful gases cannot be quickly dispersed to the external environment and are inhaled by the maintenance personnel in large quantities, it will endanger the health of the maintenance personnel. In order to solve the problem that the harmful gases under the car cannot be quickly dispersed, a blowing mechanism 8 is provided on the top of the crossbeam 1. The blowing mechanism 8 is used to blow air to the bottom of the car, so that the air under the car can be quickly exchanged with the air in the external environment, avoiding the maintenance personnel from suffering from hypoxia and inhaling a large amount of harmful gases while working, protecting the health of the maintenance personnel and improving the work efficiency of the maintenance personnel.

[0047] The structure of the air blowing mechanism 8 is detailed below. Figure 3 and Figure 4 The blowing mechanism 8 includes an air pump 81 fixedly connected to the top of the crossbeam 1, a hose 82 is fixedly connected to one side of the air pump 81, a diversion chamber 12 is opened inside the crossbeam 1, and a plurality of first air outlet slots 13 are opened in a transverse array on one side where two crossbeams 1 are close to each other. The plurality of first air outlet slots 13 are all connected to the interior of the diversion chamber 12, and one end of the hose 82 passes through the crossbeam 1 and extends to the interior of the diversion chamber 12. After the air pump 81 is started, air is continuously pumped into the interior of the diversion chamber 12 through the hose 82, and the airflow inside the diversion chamber 12 is then blown into the bottom of the vehicle through the plurality of first air outlet slots 13, thereby improving the poor air circulation under the vehicle and being beneficial to protecting the health of maintenance personnel.

[0048] There is a possibility of failure of the first hydraulic cylinder 2 during use. For example, patent CN1786490A discloses a hydraulic cylinder safety device, which limits the piston rod through a one-way valve. However, when the oil circuit is blocked and the one-way valve system fails, the hydraulic cylinder will retract under heavy pressure, which poses a great safety risk and endangers personal safety. To solve this problem, a locking mechanism 7 is provided on the side wall of the piston rod of the first hydraulic cylinder 2. When the first hydraulic cylinder 2 fails and causes the piston rod of the first hydraulic cylinder 2 to retract under the heavy pressure of the car, the locking mechanism 7 prevents the piston rod of the first hydraulic cylinder 2 from retracting, thereby preventing the piston rod of the first hydraulic cylinder 2 from fully retracting, causing the car to suddenly drop from a high place, endangering the personal safety of the maintenance personnel under the car.

[0049] The structure of the locking mechanism 7 is detailed below. Figure 5 , Figure 8 , Fig. 9 , Fig.10 and Fig.11The locking mechanism 7 includes a rack 71 fixedly connected to the piston rod of the first hydraulic cylinder 2. The rack 71 is arranged above the abutment plate 3. One end of the rack 71 passes through the cross beam 1 and extends to the upper side of the cross beam 1. The rack 71 is slidably arranged with the cross beam 1. When the piston rod of the first hydraulic cylinder 2 is extended or retracted, the rack 71 is driven to move vertically. A gear 72 is rotatably connected to the upper surface of the cross beam 1 through a rotating shaft. The gear 72 meshes with one side of the rack 71. A housing 73 is fixedly connected to the upper surface of the cross beam 1. A rotating disk 78 is fixedly connected to one end of the rotating shaft of the gear 72. The rotating disk 78 is arranged inside the housing 73, and the gear 7 The rotating shaft is rotatably arranged with the side wall of the housing 73. When the rack 71 moves vertically, the gear 72 is rotated by the meshing transmission between the rack 71 and the gear 72. The gear 72 drives the turntable 78 to rotate synchronously through the rotating shaft. The rotation speed of the turntable 78 is positively correlated with the moving speed of the rack 71. A plurality of arc-shaped teeth 74 are rotatably connected to a circular array on one side of the turntable 78. A bolt 76 is arranged on one side of the arc-shaped teeth 74 close to the rotating shaft of the gear 72. The bolt 76 consists of a screw rod fixedly connected to the side wall of the arc-shaped teeth 74 and a head fixedly connected to one end of the screw rod. A circular array on one side of the arc-shaped teeth 74 is provided. A plurality of sleeve blocks 75 are fixedly connected to the sleeve block 75 in an array, and a screw is arranged inside the sleeve block 75. There is a large gap between the screw and the inner wall of the sleeve block 75. When the arc-shaped latching tooth 74 drives the bolt 76 to rotate, the screw can move freely inside the sleeve block 75. A spring 77 is fixedly connected between the head and the sleeve block 75. When the spring 77 does not undergo elastic deformation, the spring 77 prevents one end of the arc-shaped latching tooth 74 from rotating to the bottom of the rotating disk 78 under the action of gravity, thereby preventing one end of the arc-shaped latching tooth 74 from contacting the side wall of the shell 73. At the same time, a plurality of slots 736 are provided in an annular array on the inner wall of the shell 73. The slot 736 is an arc-shaped slot body extending in the direction away from the turntable 78, and a notch is formed between the slot 736 and the inner wall of the housing 73 at the farthest point from the turntable 78. When the first hydraulic cylinder 2 works normally, the piston rod of the first hydraulic cylinder 2 slowly retracts and the rack 71 slowly moves vertically, and the rotation speed of the turntable 78 is slow. When the first hydraulic cylinder 2 fails after lifting the car, the piston rod of the first hydraulic cylinder 2 quickly retracts under the heavy pressure of the car, the rack 71 quickly moves vertically upward, and the turntable 78 rotates at a high speed. The following is a classified discussion of the states of the arc-shaped latch teeth 74 when the turntable 78 is at different rotation speeds:

[0050] When the turntable 78 drives the arc-shaped teeth 74 to rotate slowly, the spring 77 does not undergo elastic deformation, and the spring 77 limits the rotation of the arc-shaped teeth 74, so that the arc-shaped teeth 74 do not contact the inner wall of the housing 73, so that the turntable 78 can rotate smoothly, thereby allowing the piston rod of the first hydraulic cylinder 2 to be normally extended and retracted, adjusting the height of the car, and facilitating the maintenance of the car battery;

[0051] When the rotating disk 78 drives the plurality of arc-shaped teeth 74 to rotate at high speed, Fig.12The arc-shaped latch tooth 74 rotates in the direction away from the sleeve block 75 under the action of centrifugal force, the distance between the head and the sleeve block 75 is shortened, the spring 77 elastically contracts, and one end of the rotated arc-shaped latch tooth 74 is driven by the rotating disk 78 to snap into the corresponding latch groove 736, thereby preventing the rotating disk 78 from continuing to rotate. The rotating disk 78 prevents the gear 72 from rotating through the rotating shaft. Two pads are fixedly connected to the upper surface of the crossbeam 1, one side of the pad is in sliding contact with the first hydraulic cylinder 2, and the other side of the pad is in sliding contact with the rack 71. The pad blocks the rack 71 from bending in the direction away from the gear 72, so that the gear 72 prevents the rack 71 from moving vertically, thereby preventing the piston rod of the first hydraulic cylinder 2 from continuing to retract, thereby preventing the car from suddenly dropping from a high place to the lowest point, endangering the personal safety of the maintenance personnel under the car.

[0052] The four first hydraulic cylinders 2 are respectively connected to different one-way valve systems. When the one-way valve systems of one or more of the first hydraulic cylinders 2 are damaged, causing their piston rods to retract under the heavy pressure of the car, the corresponding locking mechanism 7 prevents the damaged piston rods of the first hydraulic cylinders 2 from retracting. The first hydraulic cylinders 2 whose one-way valve systems are not damaged support the car, preventing the car from suddenly falling and endangering the personal safety of the maintenance personnel under the car. The maintenance personnel need to repair the damaged first hydraulic cylinders 2 in time to prevent the rack 71, gear 72 and arc-shaped latching teeth 74 from breaking due to long-term pressure, causing the locking mechanism 7 to lose the effect of preventing the piston rods of the first hydraulic cylinders 2 from retracting. However, since the movement range of the car is small when the first hydraulic cylinder 2 is damaged, it is difficult for the maintenance personnel to judge which first hydraulic cylinder 2 has a damaged one-way valve system by observing the state of the car, which causes inconvenience to the repair work. To solve this problem, refer to Figure 7The shell 73 is provided with an annular air duct 737, which is arranged on the outside of a plurality of slots 736. A plurality of second connecting slots 738 are provided in an annular array on the inner wall of the shell 73 near the slots 736. The second connecting slots 738 connect the annular air duct 737 with the interior of the shell 73. A plurality of second air outlet slots 732 are provided near the center of one side of the shell 73. The second air outlet slots 732 are connected with the interior of the shell 73. A first connecting slot 14 is provided at the bottom of the shell 73 and the top of the crossbeam 1. The first connecting slot 14 connects the annular air duct 737 with the interior of the diverter chamber 12. When the air pump 81 pumps air into the interior of the diverter chamber 12, part of the air flow enters the annular air duct through the first connecting slot 14. The inside of the annular air duct 737, part of the air flow inside the annular air duct 737 enters the inside of the shell 73 through the second connecting groove 738, and the air flow inside the shell 73 is discharged through the second air outlet groove 732. Two through pipes 733 are fixedly connected to the top of the shell 73, and the through pipes 733 are connected to the inside of the annular air duct 737. A whistle 735 is fixedly connected to the inside of one of the through pipes 733, and a fan 734 is rotatably connected to the inside of the other through pipe 733. The fan 734 is provided with a plurality of fan blades of different colors. The remaining part of the air flow inside the annular air duct 737 is discharged to the external environment through the two through pipes 733. When there is air flow inside the through pipe 733, the fan 734 rotates and the whistle 735 makes a sound. Fig.12 When the first hydraulic cylinder 2 fails, one end of the corresponding arc-shaped tooth 74 is stuck in the corresponding slot 736 to prevent the piston rod of the first hydraulic cylinder 2 from retracting. The arc-shaped tooth 74 is in close contact with the inner wall of the corresponding slot 736, and the arc-shaped tooth 74 blocks the corresponding second connecting groove 738, so that the airflow in the annular air duct 737 cannot enter the interior of the housing 73 through the second connecting groove 738. The airflow inside the annular air duct 737 can only be discharged to the external environment through the two through pipes 733. The airflow and flow rate inside the through pipes 733 are increased, so that the rotation speed of the fan 734 is accelerated, and the loudness of the whistle 735 is increased. The maintenance personnel can judge whether the rotation speed of the fan 734 is accelerated by observing the mixed state of different colors on the blades of the fan 734, and can quickly lock the damaged first hydraulic cylinder 2 by listening to whether the whistle 735 makes a louder sound, thereby improving the repair speed of the damaged first hydraulic cylinder 2 and ensuring the life safety of the maintenance personnel.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A car lift device for repairing new energy car batteries, comprising two cross beams (1), a car is arranged between the two cross beams (1), and four tires are arranged at the bottom of the car, characterized in that: The upper surface of the cross beam (1) is hinged with a flip plate (4), and two claws (6) are fixedly connected at the positions of the two ends of the side where the two flip plates (4) are close to each other. The four tires of the car are respectively arranged inside the corresponding claws (6). The top of the cross beam (1) is provided with a blowing mechanism (8), and the blowing mechanism (8) is used to blow air to the bottom of the car. Two first hydraulic cylinders (2) are symmetrically fixedly connected at the positions near the two ends of the top of the cross beam (1), and the lower ends of the piston rods of the first hydraulic cylinders (2) penetrate the cross beam (1) and are rotatably connected to the abutment plate (3). When the first hydraulic cylinder (2 ) is extended to drive the push plate (3) to move vertically downward, so that the lower surface of the push plate (3) touches the ground, and the first hydraulic cylinder (2) drives the cross beam (1) to move vertically upward through the reaction force, and the cross beam (1) drives the flip plate (4) and the clamping claw (6) to move upward, so that the clamping claw (6) drives the car to move upward synchronously, and a locking mechanism (7) is provided on the side wall of the piston rod of the first hydraulic cylinder (2). When the first hydraulic cylinder (2) fails and causes the piston rod of the first hydraulic cylinder (2) to retract under the heavy pressure of the car, the locking mechanism (7) prevents the piston rod of the first hydraulic cylinder (2) from retracting.

2. The vehicle lift device for repairing new energy vehicle batteries according to claim 1 is characterized in that: The air blowing mechanism (8) comprises an air pump (81) fixedly connected to the top of the crossbeam (1); a hose (82) is fixedly connected to one side of the air pump (81); a flow diversion chamber (12) is provided inside the crossbeam (1); a plurality of first air outlet slots (13) are provided in a transverse array on one side of the two crossbeams (1) close to each other; the plurality of first air outlet slots (13) are all connected to the inside of the flow diversion chamber (12); and one end of the hose (82) passes through the crossbeam (1) and extends to the inside of the flow diversion chamber (12).

3. The vehicle lift device for repairing new energy vehicle batteries according to claim 2 is characterized in that: The locking mechanism (7) comprises a rack (71) fixedly connected to the piston rod of the first hydraulic cylinder (2), the rack (71) being arranged above the abutment plate (3), one end of the rack (71) passing through the cross beam (1) and extending to the upper side of the cross beam (1), the rack (71) being slidably arranged with the cross beam (1), the upper surface of the cross beam (1) being rotatably connected with a gear (72) via a rotating shaft, the gear (72) being meshed with one side of the rack (71), the upper surface of the cross beam (1) being fixedly connected with a housing (73), one end of the rotating shaft of the gear (72) being fixedly connected with a rotating disk (78), the rotating disk (78) being arranged inside the housing (73), and the rotating shaft of the gear (72) being rotatably arranged with the side wall of the housing (73).

4. The vehicle lift device for repairing new energy vehicle batteries according to claim 3 is characterized in that: A plurality of arc-shaped latch teeth (74) are rotatably connected in an annular array on one side of the rotating disk (78); a bolt (76) is provided on one side of the arc-shaped latch teeth (74) close to the rotating shaft of the gear (72); the bolt (76) is composed of a screw rod fixedly connected to the side wall of the arc-shaped latch teeth (74) and a head fixedly connected to one end of the screw rod; a plurality of sleeve blocks (75) are fixedly connected in an annular array on one side of the arc-shaped latch teeth (74); the screw rod is arranged inside the sleeve block (75); and a spring (77) is fixedly connected between the head and the sleeve block (75).

5. The vehicle lift device for repairing new energy vehicle batteries according to claim 4 is characterized in that: The inner wall of the shell (73) is provided with a plurality of slots (736) in an annular array. The slots (736) are arc-shaped slots extending in a direction away from the rotating disk (78), and a notch is formed between the slots (736) at the farthest point from the rotating disk (78) and the inner wall of the shell (73). When the rotating disk (78) drives the plurality of arc-shaped latch teeth (74) to rotate at a high speed, the arc-shaped latch teeth (74) rotate in a direction away from the sleeve block (75) under the action of centrifugal force, the distance between the head and the sleeve block (75) is shortened, the spring (77) elastically contracts, and one end of the rotated arc-shaped latch teeth (74) is inserted into the corresponding slot (736) under the drive of the rotating disk (78).

6. The vehicle lift device for repairing new energy vehicle batteries according to claim 5 is characterized in that: An annular air duct (737) is provided inside the shell (73), and the annular air duct (737) is arranged on the outside of a plurality of slots (736). A plurality of second connecting slots (738) are provided in an annular array on the inner wall of the shell (73) near the slots (736), and the second connecting slots (738) connect the annular air duct (737) with the inside of the shell (73). A plurality of second air outlet slots (732) are provided near the center of one side of the shell (73), and the second air outlet slots (732) are connected with the inside of the shell (73). A first connecting slot (14) is provided at the bottom of the shell (73) and the top of the crossbeam (1), and the first connecting slot (14) connects the annular air duct (737) with the inside of the diversion cavity (12).

7. The vehicle lift device for repairing new energy vehicle batteries according to claim 6 is characterized in that: Two through pipes (733) are fixedly connected to the top of the shell (73), and the through pipes (733) are connected to the inside of the annular air duct (737). A whistle (735) is fixedly connected to the inside of one of the through pipes (733), and a fan (734) is rotatably connected to the inside of the other through pipe (733). The fan (734) is provided with a plurality of blades with different colors.

8. The vehicle lift device for repairing new energy vehicle batteries according to claim 6 is characterized in that: When one end of the arc-shaped latch tooth (74) is inserted into the corresponding slot (736), the arc-shaped latch tooth (74) is in close contact with the inner wall of the corresponding slot (736), and the arc-shaped latch tooth (74) blocks the corresponding second connecting slot (738), so that the airflow in the annular air duct (737) cannot enter the interior of the shell (73) through the second connecting slot (738).

9. The vehicle lift device for repairing new energy vehicle batteries according to claim 1 is characterized in that: A plurality of universal wheels (11) are installed on the lower surface of the crossbeam (1), and the plurality of universal wheels (11) are distributed in a rectangular array, and the bottom ends of the universal wheels (11) are located below the abutment plate (3).

10. The vehicle lift device for repairing new energy vehicle batteries according to claim 1, characterized in that: One end of the flip plate (4) away from the hinged connection between the flip plate (4) and the cross beam (1) is hingedly connected to a second hydraulic cylinder (5), and the other end of the second hydraulic cylinder (5) is hingedly connected to the upper surface of the cross beam (1).

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