Electromagnetic lifting device for automobile longitudinal beam
By designing the electromagnetic lifting device of the automobile longitudinal beam and using the servo motor to control the precise adjustment of the cross beam and the bar box, the instability and adjustment problems of the traditional lifting device are solved, and efficient and safe lifting effect is achieved.
Patent Information
- Application Number
- CN202421873588.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-05
AI Technical Summary
Traditional lifting devices have instability, difficulty in adjusting and steering when lifting the longitudinal beams of a car, which affects the lifting efficiency.
The electromagnetic lifting device of automobile longitudinal beams, including supporting frames, bar plates, conveyor belts, beams, adjustment components, electromagnetic suction cups, etc. is adopted. The precise adjustment of cross beams, bar boxes and vertical plates is controlled by the servo motor, and combined with buffer components and guide components, stable lifting and rapid steering are achieved.
It improves the stability and efficiency of the lifting process, adapts to different shapes and sizes of automobile longitudinal beams, extends the service life of the device, and reduces the difficulty of use and maintenance costs.
Smart Images
Figure CN223073729U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lifting equipment for automobile processing, and particularly relates to an electromagnetic lifting device for automobile longitudinal beams. Background Art
[0002] During the automobile processing, it is often necessary to lift and move the automobile longitudinal beams. However, there are some problems in the operation of traditional lifting devices. For example, there are unstable phenomena such as easy swinging during the lifting process. At the same time, it is not convenient to adjust according to the size of the automobile longitudinal beam to be hoisted during the lifting, resulting in certain limitations in use, and it is not convenient to perform actions such as quick and stable turning on the hoisted automobile longitudinal beam, which will affect the lifting efficiency.
[0003] In order to solve these problems, the utility model proposes an electromagnetic lifting device for automobile longitudinal beams.
[0004] , therefore, the utility model proposes an electromagnetic lifting device for automobile longitudinal beams to solve the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide an electromagnetic lifting device for automobile longitudinal beams, which has the effects of improving the stability and efficiency of the lifting process, and at the same time can realize actions such as quick and stable turning according to the actual lifting needs.
[0006] The above technical purpose of the utility model is achieved by the following technical solutions: an electromagnetic lifting device for automobile longitudinal beams, including a support frame, two strip plates, a conveyor belt, a support frame, a cross beam, a first adjustment component, a second adjustment component, a strip box, a first support and guiding component, a second support and guiding component, a third adjustment component, two vertical plates, a buffer component, and two electromagnetic suction cups for lifting the automobile longitudinal beams;
[0007] Both strip plates are fixedly installed at the bottom of the support frame and are arranged in parallel with each other. The conveyor belt is arranged on the two strip plates and is located below the support frame. The cross beam is slidably installed on the support frame. Two hydraulic cylinders are fixedly installed on the top sides of both strip plates. The tops of the four hydraulic cylinders are fixedly connected to the cross beam. The support frame is movably sleeved on the cross beam. The first adjustment component is arranged in the support frame and is connected to the cross beam. The strip box is arranged below the support frame. The second adjustment component and the first support and guiding component are both arranged on the top of the strip box and are connected to the support frame. Two strip openings are respectively formed in the top and bottom of the strip box. Two vertical plates are respectively slidably installed in the corresponding two strip openings. The second support and guiding component is arranged on the top sides of the two vertical plates and is connected to the top sides of the strip plates. The third adjustment component is arranged in the strip box and is connected to the two vertical plates. Mounting plates are fixedly installed on the bottom sides of the two vertical plates. The number of the buffer components is two and they are respectively arranged on the corresponding mounting plates. Two electromagnetic chucks are respectively arranged on the bottom sides of the corresponding buffer components.
[0008] A further setting of the present utility model is that: the first adjustment component includes a first motor, a first gear, a first toothed plate and two fixing blocks. Two fixing blocks are fixedly installed on the inner wall of the bottom of the support frame. The first motor is fixedly installed on the fixing block located at the front side. The output shaft of the first motor is rotatably connected to the two fixing blocks. The first gear is fixedly sleeved on the output shaft of the first motor. The first toothed plate is fixedly installed on the bottom side of the cross beam. The first gear meshes with the first toothed plate.
[0009] By adopting the above technical solution, it is possible to control the transverse position adjustment of the moving plate along the cross beam.
[0010] A further setting of the present utility model is that: a plurality of support wheels one arranged in parallel with each other are rotatably installed on the inner walls of the front and rear sides of the support frame. The plurality of support wheels one are respectively in contact with the top side and the bottom side of the cross beam.
[0011] By adopting the above technical solution, it is possible to provide stable guidance for the support frame, so as to ensure that the support frame moves stably along the cross beam.
[0012] A further setting of the present utility model is that: the second adjustment component includes a rotating pin, a second motor, a second gear and a third gear. The rotating pin is rotatably installed at the center position of the top of the strip box. The top end of the rotating pin is fixedly installed at the bottom of the support frame. The second motor is fixedly installed on the top of the strip box. The second gear and the third gear are respectively fixedly sleeved on the output shaft of the second motor and the rotating pin. The second gear meshes with the third gear.
[0013] By adopting the above technical solution, it is possible to control the rotational adjustment of the strip box centered on the rotating pin as required.
[0014] A further setting of the present utility model is as follows: The first support and guiding assembly includes a fixed ring, a plurality of guiding blocks and guiding grooves. A guiding groove is formed at the bottom side of the support frame with the rotating pin as the center. A fixed ring is fixedly installed at the top of the strip-shaped box. A plurality of guiding blocks are fixedly installed on the top side of the fixed ring, and the plurality of guiding blocks are all in sliding contact with the inner wall of the guiding groove.
[0015] By adopting the above technical solution, it can provide support and guidance for the strip-shaped box, so that the strip-shaped box can maintain stable rotation.
[0016] A further setting of the present utility model is as follows: The third adjusting assembly includes a third motor, two second toothed plates and a fourth gear. A third motor is fixedly installed on the front side of the strip-shaped box. The output shaft of the third motor extends into the strip-shaped box and is fixedly sleeved with a fourth gear. Two second toothed plates are slidably installed on the top inner wall and the bottom inner wall of the strip-shaped box respectively. The mutually remote ends of the two second toothed plates are respectively fixedly connected to the corresponding vertical plates, and the two second toothed plates are both meshed with the fourth gear.
[0017] By adopting the above technical solution, the distance between the two electromagnetic chucks can be adjusted as required.
[0018] A further setting of the present utility model is as follows: The second support and guiding assembly includes two top plates and eight second support wheels. The top sides of the two vertical plates are both fixedly installed with top plates. Four second support wheels are rotatably installed on the bottom side of the top plate, and the four support wheels are all rollingly installed on the top of the strip-shaped box.
[0019] By adopting the above technical solution, it can provide guidance for the two vertical plates and at the same time reduce the friction when the vertical plates move along the strip-shaped opening.
[0020] A further setting of the present utility model is as follows: The buffer assembly includes a plurality of guiding rods, a plurality of limiting blocks and a plurality of springs. A plurality of mutually parallel guiding rods are slidably installed on the mounting plate. The top ends of the plurality of guiding rods all extend above the mounting plate and are respectively fixedly installed with limiting blocks. A plurality of springs are fixedly installed between the bottom side of the limiting block and the top side of the mounting plate and are movably sleeved on the outer sides of the guiding rods. The bottom ends of the plurality of guiding rods all extend below the mounting plate and are fixedly installed on the top of the electromagnetic chuck.
[0021] By adopting the above technical solution, it can provide buffering when the electromagnetic chuck adsorbs the vehicle longitudinal beam, and avoid damage to the electromagnetic chuck when the speed of lifting the adsorbed vehicle longitudinal beam by the electromagnetic chuck is too fast.
[0022] A further setting of the present utility model is as follows: Two rolling grooves are formed at the top of the strip-shaped box, and the plurality of second support wheels are respectively rollingly installed in the corresponding rolling grooves.
[0023] By adopting the above technical solution, it can ensure that the first support wheel 31 rolls stably on the strip-shaped box 5.
[0024] A further setting of the present utility model is that the first motor, the second motor and the third motor all adopt servo motors.
[0025] By adopting the above technical solution, precise control of components such as the cross beam, the strip box and the vertical plate can be achieved, improving the precision and reliability of the lifting.
[0026] The electromagnetic lifting device for automotive longitudinal beams provided by the present utility model has the following beneficial effects mainly reflected in the following aspects:
[0027] First of all, through the design of the first adjusting component and the first supporting wheel, the lateral positions of the cross beam and components such as the supporting frame and the strip box thereon can be easily adjusted, enabling the electromagnetic chuck to accurately locate above the automotive longitudinal beam to be lifted, greatly improving the working efficiency and operation precision.
[0028] Secondly, the setting of the second adjusting component enables the strip box to be rotationally adjusted around the rotating pin. Such a design can adapt to automotive longitudinal beams of different shapes and angles, enhancing the adaptability and flexibility of the device.
[0029] Furthermore, the third adjusting component drives the fourth gear to rotate through the third motor, driving the two second toothed plates to move towards or away from each other, thereby changing the distance between the two vertical plates and the electromagnetic chuck below them to adapt to automotive longitudinal beams of different sizes, further improving the versatility and practicality of the device.
[0030] In addition, the first support guiding component and the second support guiding component provide stable guiding and support for the strip box and the vertical plate, ensuring the stability and safety during the lifting process. The buffer component can provide buffering when the electromagnetic chuck adsorbs the automotive longitudinal beam, avoiding damage to the electromagnetic chuck due to too fast speed during the lifting process, and prolonging the service life of the device.
[0031] Finally, the first motor, the second motor and the third motor in the present utility model all adopt servo motors, which can achieve precise control of components such as the cross beam, the strip box and the vertical plate, improving the precision and reliability of the lifting. At the same time, the device has a compact structure, reasonable design, simple and convenient operation, greatly reducing the usage difficulty and maintenance cost.
[0032] In summary, the electromagnetic lifting device for automotive longitudinal beams of the present utility model not only improves the lifting efficiency and precision, but also has strong adaptability and flexibility, and can meet the lifting requirements of automotive longitudinal beams of different types and sizes. It is an efficient, safe and reliable automotive longitudinal beam lifting device. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0034] Figure 1 Schematic diagram of the three-dimensional structure of an electromagnetic lifting device for an automotive longitudinal beam proposed by the present utility model;
[0035] Figure 2 Schematic diagram of the partial sectional structure of an electromagnetic lifting device for an automotive longitudinal beam proposed by the present utility model;
[0036] Figure 3 Schematic diagram of the partial three-dimensional structure of an electromagnetic lifting device for an automotive longitudinal beam proposed by the present utility model;
[0037] Figure 4 Schematic diagram of the three-dimensional structure of the cross beam, the first adjusting component, the support frame and the first support wheel in an electromagnetic lifting device for an automotive longitudinal beam proposed by the present utility model;
[0038] Figure 5 Schematic diagram of the three-dimensional structure of the third adjusting component, the vertical plate, the second support guiding component, the mounting plate, the electromagnetic chuck and the buffer component part in an electromagnetic lifting device for an automotive longitudinal beam proposed by the present utility model;
[0039] Figure 6 For Figure 5 Partial three-dimensional structure diagram.
[0040] In the figure, 1. strip plate; 11. conveyor belt; 2. support frame; 21. cross beam; 22. hydraulic cylinder; 3. support frame; 31. first support wheel; 4. first motor; 41. first gear; 42. first toothed plate; 5. strip box; 51. rotating pin; 52. second motor; 53. second gear; 54. third gear; 55. fixed ring; 56. guide block; 6. vertical plate; 61. top plate; 62. second support wheel; 63. mounting plate; 7. electromagnetic chuck; 71. guide rod; 72. limit block; 73. spring; 8. second toothed plate; 81. third motor; 82. fourth gear. Detailed implementation manners
[0041] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.
[0042] Reference Figures 1-6, an electromagnetic lifting device for automobile longitudinal beams, comprising a support frame 2, two strip plates 1, a conveyor belt 11, a support frame 3, a cross beam 21, a strip box 5, two vertical plates 6 and two electromagnetic suction cups 7 for lifting automobile longitudinal beams. Both of the two strip plates 1 are fixedly installed at the bottom of the support frame 2 and are arranged in parallel with each other. The conveyor belt 11 is arranged on the two strip plates 1 and is located below the support frame 2. The cross beam 21 is slidably installed on the support frame 2. Two hydraulic cylinders 22 are fixedly installed on the top sides of the two strip plates 1. The tops of the four hydraulic cylinders 22 are fixedly connected to the cross beam 21. The support frame 3 is movably sleeved on the cross beam 21. Two fixing blocks are fixedly installed on the inner wall of the bottom of the support frame 3. A first motor 4 is fixedly installed on the front fixing block. The output shaft of the first motor 4 is rotatably connected to the two fixing blocks. A first gear 41 is fixedly sleeved on the output shaft of the first motor 4. A first toothed plate 42 is fixedly installed on the bottom side of the cross beam 21. The first gear 41 meshes with the first toothed plate 42, which can control the lateral position adjustment of the moving plate along the cross beam 21. The strip box 5 is arranged below the support frame 3. A rotating pin 51 is rotatably installed at the center of the top of the strip box 5. The top of the rotating pin 51 is fixedly installed at the bottom of the support frame 3. A second motor 52 is fixedly installed on the top of the strip box 5. A second gear 53 and a third gear 54 are respectively fixedly sleeved on the output shaft of the second motor 52 and the rotating pin 51. The second gear 53 meshes with the third gear 54, which can control the rotation adjustment of the strip box 5 centered on the rotating pin 51 as required. A guide groove is formed at the bottom side of the support frame 3 centered on the rotating pin 51. A fixing ring 55 is fixedly installed on the top of the strip box 5. A plurality of guide blocks 56 are fixedly installed on the top side of the fixing ring 55. All the plurality of guide blocks 56 are in sliding contact with the inner wall of the guide groove, which can provide support and guidance for the strip box 5, so that the strip box 5 can maintain stable rotation. Two strip openings are respectively formed at the top and bottom of the strip box 5. The two vertical plates 6 are respectively slidably installed in the corresponding two strip openings. The top sides of the two vertical plates 6 are fixedly installed with top plates 61. Four second support wheels 62 are rotatably installed on the bottom side of the top plate 61. All the four support wheels are rollingly installed on the top of the strip box 5, which can provide guidance for the two vertical plates 6 and reduce the friction when the vertical plates 6 move along the strip openings at the same time. A third motor 81 is fixedly installed on the front side of the strip box 5. The output shaft of the third motor 81 extends into the strip box 5 and is fixedly sleeved with a fourth gear 82. Two toothed plates 8 are slidably installed on the inner walls of the top and bottom of the strip box 5. The mutually remote ends of the two toothed plates 8 are respectively fixedly connected to the corresponding vertical plates 6, and both of the two toothed plates 8 mesh with the fourth gear 82, which can adjust the distance between the two electromagnetic suction cups 7 as required. The bottom sides of the two vertical plates 6 are respectively fixedly installed with mounting plates 63. A plurality of guide rods 71 arranged in parallel with each other are slidably installed on the mounting plates 63. The tops of the plurality of guide rods 71 all extend above the mounting plates 63 and are respectively fixedly installed with limit blocks 72. A plurality of springs 73 are fixedly installed between the bottom sides of the limit blocks 72 and the top sides of the mounting plates 63 and are movably sleeved on the outer sides of the guide rods 71.The bottom ends of multiple guide rods 71 all extend below the mounting plate 63 and are fixedly installed on the top of the electromagnetic chuck 7, which can provide buffering when the electromagnetic chuck 7 adsorbs the vehicle longitudinal beam, and avoid damage to the electromagnetic chuck 7 when the speed of lifting the adsorbed vehicle longitudinal beam by the electromagnetic chuck 7 is too fast.
[0043] Specifically, in order to stably guide the support frame 3, so as to ensure that the support frame 3 moves stably along the cross beam 21, a plurality of support wheels 31 arranged in parallel with each other are rotatably installed on the inner walls of the front and rear sides of the support frame 3, and the plurality of support wheels 31 are respectively in contact with the top side and the bottom side of the cross beam 21.
[0044] Specifically, in order to ensure that the support wheels 31 roll stably on the strip box 5, two rolling grooves are opened at the top of the strip box 5, and a plurality of support wheels 62 are respectively installed in the corresponding rolling grooves for rolling.
[0045] Specifically, in order to accurately control components such as the cross beam 21, the strip box 5 and the vertical plate 6, and improve the accuracy and reliability of the lifting, the first motor 4, the second motor 52 and the third motor 81 all adopt servo motors.
[0046] Working principle:
[0047] When using the electromagnetic lifting device for vehicle longitudinal beams, first, the power supply is turned on, and the first motor 4 is operated to drive the first gear 41 to rotate. Since the first gear 41 meshes with the first toothed plate 42, the rotation of the first gear 41 will drive the support frame 3 to adjust its lateral position along the cross beam 21 until the support frame 3 is adjusted to the required position.
[0048] Subsequently, the second motor 52 is operated to drive the second gear 53 to rotate. Since the second gear 53 meshes with the third gear 54, and the third gear 54 is fixedly sleeved on the rotating pin 51, the rotation of the second gear 53 will drive the strip box 5 to rotate and adjust around the rotating pin 51 as the center until the strip box 5 is adjusted to a suitable angle. At the same time, since the guide block 56 is in sliding contact with the inner wall of the guide groove, the strip box 5 can maintain a stable posture during the rotation process.
[0049] After the strip box 5 is adjusted to a suitable angle, the third motor 81 is operated to drive the fourth gear 82 to rotate. Since the two second toothed plates 8 are respectively fixedly connected to the corresponding vertical plates 6, and both of the two second toothed plates 8 mesh with the fourth gear 82, the rotation of the fourth gear 82 will drive the two vertical plates 6 to move relatively or towards each other along the strip opening of the strip box 5, so as to adjust the distance between the two electromagnetic chucks 7 to meet the lifting requirements of vehicle longitudinal beams of different sizes.
[0050] When the electromagnetic chuck 7 adsorbs the vehicle longitudinal beam, the guide rod 71 will buffer under the elastic force of the spring 73, avoiding damage to the electromagnetic chuck 7 when the speed of lifting the adsorbed vehicle longitudinal beam by the electromagnetic chuck 7 is too fast. At the same time, a plurality of second supporting wheels 62 are rotatably installed on the top of the strip-shaped box 5, which can provide support and guidance for the two vertical plates 6, and at the same time reduce the friction when the vertical plates 6 move along the strip-shaped opening.
[0051] The entire electromagnetic lifting device for vehicle longitudinal beams has a compact structure and is easy to operate. It can achieve precise lifting of vehicle longitudinal beams, improving work efficiency and safety. At the same time, through the precise control of the first motor 4, the second motor 52 and the third motor 81, the lifting precision and reliability are further improved.
[0052] The above has introduced in detail an electromagnetic lifting device for vehicle longitudinal beams provided by the present utility model. Specific embodiments are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.
Claims
1. An electromagnetic lifting device for an automotive longitudinal beam, characterized in that, It includes a support frame (2), two strip plates (1), a conveyor belt (11), a support frame (3), a cross beam (21), a first adjustment assembly, a second adjustment assembly, a strip box (5), a first support and guiding assembly, a second support and guiding assembly, a third adjustment assembly, two vertical plates (6), a buffer assembly, and two electromagnetic suction cups (7) for lifting the longitudinal beam of an automobile; The two strip plates (1) are both fixedly installed at the bottom of the support frame (2) and are arranged in parallel with each other. The conveyor belt (11) is arranged on the two strip plates (1) and is located below the support frame (2). The cross beam (21) is slidably installed on the support frame (2). Two hydraulic cylinders (22) are fixedly installed on the top sides of the two strip plates (1). The tops of the four hydraulic cylinders (22) are fixedly connected to the cross beam (21). The support frame (3) is movably sleeved on the cross beam (21). The first adjustment assembly is arranged inside the support frame (3) and is connected to the cross beam (21). The strip box (5) is arranged below the support frame (3). The second adjustment assembly and the first support and guiding assembly are both arranged on the top of the strip box (5) and are connected to the support frame (3). Two strip openings are respectively formed in the top and bottom of the strip box (5). The two vertical plates (6) are respectively slidably installed in the corresponding two strip openings. The second support and guiding assembly is arranged on the top sides of the two vertical plates (6) and is connected to the top sides of the strip plates (1). The third adjustment assembly is arranged inside the strip box (5) and is connected to the two vertical plates (6). Mounting plates (63) are fixedly installed on the bottom sides of the two vertical plates (6). The number of the buffer assemblies is two and they are respectively arranged on the corresponding mounting plates (63). The two electromagnetic suction cups (7) are respectively arranged on the bottom sides of the corresponding buffer assemblies; The first adjustment assembly includes a first motor (4), a first gear (41), a first toothed plate (42), and two fixing blocks. Two fixing blocks are fixedly installed on the inner bottom wall of the support frame (3). The first motor (4) is fixedly installed on the fixing block at the front side. The output shaft of the first motor (4) is rotatably connected to the two fixing blocks. A first gear (41) is fixedly sleeved on the output shaft of the first motor (4). A first toothed plate (42) is fixedly installed on the bottom side of the cross beam (21). The first gear (41) meshes with the first toothed plate (42); A plurality of support wheels (31) which are arranged in parallel with each other are rotatably installed on the inner front and rear walls of the support frame (3). The plurality of support wheels (31) are respectively in contact with the top side and the bottom side of the cross beam (21); The second adjustment assembly includes a rotating pin (51), a second motor (52), a second gear (53), and a third gear (54). The rotating pin (51) is rotatably installed at the center position of the top of the strip box (5). The top end of the rotating pin (51) is fixedly installed at the bottom of the support frame (3). The second motor (52) is fixedly installed on the top of the strip box (5). A second gear (53) and a third gear (54) are respectively fixedly sleeved on the output shaft of the second motor (52) and the rotating pin (51). The second gear (53) meshes with the third gear (54); The first support and guide component includes a fixed ring (55), a plurality of guide blocks (56) and guide grooves. A guide groove is provided on the bottom side of the support frame (3) centered on the rotating pin (51). A fixed ring (55) is fixedly installed on the top of the strip-shaped box (5). A plurality of guide blocks (56) are fixedly installed on the top side of the fixed ring (55). All the plurality of guide blocks (56) are in sliding contact with the inner wall of the guide groove. The third adjustment component includes a third motor (81), two second toothed plates (8) and a fourth gear (82). The third motor (81) is fixedly installed on the front side of the strip-shaped box (5). The output shaft of the third motor (81) extends into the strip-shaped box (5) and is fixedly sleeved with the fourth gear (82). The second toothed plates (8) are slidably installed on the inner walls of the top and bottom of the strip-shaped box (5). The mutually remote ends of the two second toothed plates (8) are respectively fixedly connected to the corresponding vertical plates (6), and both of the two second toothed plates (8) are meshed with the fourth gear (82). The first motor (4), the second motor (52) and the third motor (81) all adopt servo motors.
2. The electromagnetic lifting device for vehicle longitudinal beam according to claim 1, characterized in that: The second support and guide component includes two top plates (61) and eight second support wheels (62). The top sides of the two vertical plates (6) are both fixedly installed with top plates (61). Four second support wheels (62) are rotatably installed on the bottom side of the top plate (61). All the four support wheels are rollingly installed on the top of the strip-shaped box (5).
3. The electromagnetic lifting device for automotive longitudinal beams according to claim 1, characterized in that: The buffer component includes a plurality of guide rods (71), a plurality of limit blocks (72) and a plurality of springs (73). A plurality of mutually parallel guide rods (71) are slidably installed on the mounting plate (63). The top ends of the plurality of guide rods (71) all extend above the mounting plate (63) and are respectively fixedly installed with limit blocks (72). A plurality of springs (73) which are movably sleeved on the outer sides of the guide rods (71) are fixedly installed between the bottom sides of the limit blocks (72) and the top side of the mounting plate (63). The bottom ends of the plurality of guide rods (71) all extend below the mounting plate (63) and are fixedly installed on the top of the electromagnetic chuck (7).
4. The electromagnetic lifting device for vehicle longitudinal beams according to claim 2, wherein: Two rolling grooves are provided on the top of the strip-shaped box (5). A plurality of second support wheels (62) are respectively rollingly installed in the corresponding rolling grooves.