Jacking machine and production line

Abstract

This application relates to a lifting machine and production line, belonging to the field of vehicle manufacturing technology. It includes: a base, a first pushing assembly, a support frame, a second pushing assembly, and a limiting member. The first pushing assembly is disposed on the base; the support frame is disposed on the first pushing assembly, which is used to push the support frame to extend or retract horizontally; the second pushing assembly is disposed on the base; the limiting member is connected to the second pushing assembly, which drives the limiting member to move vertically; when extended, the limiting member contacts the support frame to restrict its extension. By using the first pushing assembly to drive the support frame to extend and retract horizontally, and combining this with the second pushing assembly to drive the limiting member to move vertically, the extension distance of the support frame can be controllably adjusted. When the limiting member is in the extended state, it can contact the support frame, restricting its further extension, thereby achieving two different extension positions without changing the stroke of the first pushing assembly.

Description

Technical Field

[0001] This application relates to the technical field of vehicle production, and more particularly to a lifting machine and production line. Background Technology

[0002] In vehicle manufacturing, telescopic lifting equipment is often used to transfer the vehicle body from the overhead conveyor line to the ground. This type of lifting equipment typically includes a fixed base, a telescopic arm, and a drive cylinder. The cylinder pushes the telescopic arm to extend along a guide rail, bringing the support block into contact with the support point at the bottom of the vehicle body, thereby lifting and transferring the vehicle. Existing telescopic arms are mostly directly driven by cylinders, with a fixed extension length, only suitable for supporting a single vehicle body size. While structurally simple, they have poor adaptability.

[0003] However, as automobile manufacturing moves towards multi-model and flexible production, the same production line often needs to accommodate vehicles of different sizes. Due to differences in body width and support point locations between different vehicle classes (such as large and small cars), fixed-length lifting equipment cannot simultaneously meet the support needs of multiple vehicle types. Adaptive modifications such as widening the support blocks are difficult to implement due to limitations in the surrounding space of the vehicle body. Therefore, existing lifting equipment suffers from poor applicability, difficulty in modification, and inability to flexibly adjust support spacing in mixed-line production scenarios. Utility Model Content

[0004] This application addresses, to at least some extent, one of the technical problems in the related art.

[0005] Therefore, this application aims to provide a lifting machine and production line, which is provided with a second pushing component and a limiting component. When the limiting component is extended by the second pushing component, it can contact the support frame and restrict the support frame from extending further, thereby achieving two different extension positions without changing the stroke of the first pushing component.

[0006] To achieve the above objectives, in a first aspect, this application provides a lifting machine, comprising: Base; A first pushing component is disposed on the base; A support frame is disposed on the first pushing component, the first pushing component being used to push the support frame to extend or retract in a horizontal direction; A second pushing component is disposed on the base; A limiting member is provided, which is connected to the second pushing component, and the second pushing component drives the limiting member to move in the vertical direction; When the limiting member extends, it is used to contact the support frame to restrict the extension of the support frame.

[0007] In this technical solution, a first pushing component drives the support frame to extend and retract horizontally, while a second pushing component moves a limiting component vertically, achieving controllable adjustment of the support frame's extension distance. When the limiting component is in the extended state, it contacts the support frame, restricting further extension. This allows for two different extension positions without changing the stroke of the first pushing component. This design effectively solves the problem that traditional lifting equipment, due to its fixed extension length, cannot adapt to the support needs of vehicles with different widths, making it particularly suitable for scenarios involving mixed production lines of large and small vehicles. The structure employs a mechanical limiting method, offering high reliability and fast response, and eliminates the need for complex control systems or high-cost actuators, significantly improving the equipment's applicability and economy.

[0008] In some embodiments of this application, the support frame includes: Support rod; A limiting rod is connected to the support rod and is used to abut against the limiting member.

[0009] In this technical solution, the support rod connects to the first pushing assembly and bears the weight of the vehicle body, while the limiting rod is specifically designed to work with the limiting component to achieve precise control of the extension position. This clear division of labor facilitates manufacturing and assembly, while also enhancing overall rigidity and stability. The limiting rod makes the function of the limiting component more concentrated and effective, avoiding deformation or wear problems caused by uneven stress on the support frame. Furthermore, this design facilitates subsequent maintenance and component replacement, improving the maintainability and service life of the equipment, and possesses significant engineering practical value.

[0010] In some embodiments of this application, the base is further provided with a first slide rail, the length direction of the first slide rail being the same as the pushing direction of the first pushing component; the support rod is slidably connected to the first slide rail along its length direction.

[0011] In this technical solution, the first slide rail effectively improves the smoothness and guiding accuracy of the support frame's movement, preventing it from shifting or jamming, and ensuring the stability and safety of vehicle transfer. This structure is particularly suitable for high-load, high-frequency working environments, such as automobile assembly workshops, significantly reducing equipment failure rates and extending service life. Furthermore, the slide rail structure is simple, inexpensive, and easy to install and adjust, providing crucial assurance for the reliable operation of the lifting machine.

[0012] In some embodiments of this application, the support frame further includes a connecting rod; There are two support rods arranged in parallel; the connecting rod connects the two support rods; the output end of the first pushing component is connected to the connecting rod.

[0013] In this technical solution, the connecting rod serves as the force-bearing point of the first pushing component, resulting in a more uniform thrust distribution and preventing deformation or damage caused by excessive force at a single point. This structural design is reasonable and suitable for scenarios requiring the load-bearing capacity of the vehicle body and precise horizontal displacement. It effectively improves the stability and safety of the lifting machine during vehicle transport, while simplifying the installation and debugging process of the drive components.

[0014] In some embodiments of this application, the length direction of the limiting rod is horizontal and perpendicular to the moving direction of the support rod; The limiting rod is located between the two support rods, and both ends of the limiting rod are connected to the support rods respectively.

[0015] In this technical solution, the limiting rod forms a stable lateral limiting structure. After rising, the limiting component accurately and reliably blocks the limiting rod, thereby precisely controlling the extension distance of the support frame. Ensuring that the length direction of the limiting rod is perpendicular to the movement direction of the support frame prevents the limiting component from sliding along the length direction of the limiting rod after contact, thus avoiding deviation of the support frame. This enhances the compactness and coordination of the overall structure, avoids equipment malfunctions or inadequate vehicle body support due to inaccurate limiting, and further ensures the accuracy and safety of transferring different vehicle models during mixed-line production.

[0016] In some embodiments of this application, a support block is provided at the top of one end of the extended support rod, and the support block is used to contact the vehicle body.

[0017] In this technical solution, the support blocks facilitate alignment with the support points on the vehicle body. They also prevent scratches on the vehicle body surface during transport, improving product quality. Furthermore, the support blocks are designed for easy replacement or adjustment based on vehicle model changes, enhancing the equipment's adaptability and flexibility. This simple and practical structure protects the vehicle body and extends the service life of the support frame.

[0018] In some embodiments of this application, the base is further provided with a second slide rail, the length direction of the second slide rail is vertically arranged, and the limiting member is slidably connected to the second slide rail along the length direction of the second slide rail; The top of the second slide rail is lower than the bottom wall of the limiting rod.

[0019] The technical solution ensures the guiding accuracy and stability of the limiting component during lifting. The second slide rail effectively resists any swaying or deflection that may occur when the limiting component is under force, ensuring accurate positioning and reliable operation when in contact with the limiting rod. Simultaneously, it prevents excessive force on the second pushing component, protecting it. The second slide rail is lower than the limiting rod, ensuring that the limiting rod will not interfere with the second slide rail when the support frame moves a longer distance and the pushing component is not needed.

[0020] In some embodiments of this application, a pad is further included, the pad being located between the limiting member and the limiting rod.

[0021] In this technical solution, a buffer block is used to cushion the impact between the limiting component and the limiting rod, reducing noise and vibration, and minimizing wear between metal parts. This design not only improves the smoothness and comfort of equipment operation but also extends the service life of the limiting component and the limiting rod, reducing maintenance frequency and costs.

[0022] In some embodiments of this application, the first actuating component is a cylinder; And / or, The second actuation component is a cylinder.

[0023] In technical solutions, cylinders offer advantages such as simple structure, low cost, rapid response, and convenient maintenance. As a mature pneumatic component, cylinders exhibit high reliability and adaptability in industrial environments, making them particularly suitable for high-load, high-frequency lifting and limiting scenarios.

[0024] Secondly, this application also provides a production line for producing vehicles, the production line including the lifting machine as described above.

[0025] In this technical solution, the production line can automatically adjust the support spacing of the lifting machine according to the vehicle model, enabling mixed-line production of large and small models, significantly improving the adaptability and production efficiency of the production line. By adopting a mechanical variable-pitch lifting solution, the high cost and long cycle problems of the traditional electric cylinder solution are avoided, providing automobile manufacturers with an economical, reliable, and flexible transfer solution that supports the modern production mode of multiple models and small batches.

[0026] As can be seen from the above technical solutions, additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the lifting machine according to the embodiments of this application; Figure 2 This is a structural schematic diagram of the lifting machine according to an embodiment of this application from another perspective; Figure 3 This is a schematic diagram of the overall structure of the lifting machine limiting member and the limiting rod when they are in contact, according to an embodiment of this application. Figure 4 This is a structural schematic diagram from another perspective when the lifting machine limiting member and the limiting rod are in contact according to an embodiment of this application.

[0028] In the above figures: 100, base; 200, support frame; 201, support rod; 202, connecting rod; 203, limiting rod; 300, support block; 400, first slide rail; 500, first pushing assembly; 600, second pushing assembly; 700, limiting component; 800, second slide rail; 900, roller; 110, friction wheel. Detailed Implementation

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments. It should be noted that in the automotive industry, telescopic lifting equipment is often used during vehicle manufacturing to transfer the vehicle body from the overhead conveyor line to the ground. This type of lifting equipment typically includes a fixed base, a telescopic arm, and a drive cylinder. The cylinder pushes the telescopic arm to extend along a guide rail, causing the support block to contact the support point at the bottom of the vehicle body, thereby achieving the lifting and transfer of the vehicle.

[0031] In existing technologies, due to differences in vehicle body width and support point locations between different vehicle classes (such as large vehicles and small vehicles), lifting equipment with a fixed extension length cannot simultaneously meet the support requirements of multiple vehicle models. Adaptive modifications such as widening the support blocks are difficult to implement due to limitations in the surrounding space of the vehicle body. Therefore, existing lifting equipment suffers from poor applicability, difficulty in modification, and inability to flexibly adjust support spacing in mixed-line production scenarios.

[0032] Based on this, this application proposes a lifting machine and production line. By setting a second pushing component and a limiting component, the limiting component can contact the support frame when extended by the second pushing component, thus restricting the support frame from extending further. This achieves the effect of two different extension positions without changing the stroke of the first pushing component, solving the problems of poor applicability, difficult modification, and inability to flexibly adjust the support spacing of existing lifting equipment in mixed production scenarios.

[0033] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0034] Referring to all the accompanying drawings, in one illustrative embodiment of the lifting machine and production line of this application, the lifting machine includes a base 100 for load-bearing and serving as the mounting foundation for the remaining structures. The base 100 is supported on the ground and can also be used as a counterweight to prevent the lifting machine from tipping over.

[0035] In some embodiments, the lifting machine further includes a first pushing assembly 500 and a support frame 200. The first pushing assembly 500 is disposed on the base 100; the support frame 200 is disposed on the first pushing assembly 500, and the first pushing assembly 500 is used to push the support frame 200 to extend or retract in a horizontal direction. When it is necessary to support the vehicle, the first pushing assembly 500 pushes the support frame 200 to extend under the vehicle body, and the support frame 200 is used to receive and lift the vehicle body.

[0036] In some embodiments, the lifting machine further includes a second pushing assembly 600 and a limiting member 700. The second pushing assembly 600 is disposed on the base 100; the limiting member 700 is connected to the second pushing assembly 600, and the second pushing assembly 600 drives the limiting member 700 to move vertically. When extended, the limiting member 700 contacts the support frame 200 to limit the extension of the support frame 200.

[0037] In existing technologies, achieving the effect of a single lifting machine adapting to different vehicle widths requires adjusting the stroke of the electronically controlled first push component 500. However, this typically presents the following problems: First, frequent stroke adjustments accelerate mechanical component wear, motor overheating, and sensor malfunctions, reducing system reliability. Second, frequent motor operation leads to high energy consumption, increasing operating costs. Third, the system relies on a high degree of electrical and mechanical integration, increasing design and maintenance complexity.

[0038] In this application, by setting the first pushing component 500 to drive the support frame 200 to extend and retract horizontally, and combining this with the second pushing component 600 to drive the limiting component 700 to move vertically, the extension distance of the support frame 200 is controllably adjustable. When the limiting component 700 is in the extended state, it can contact the support frame 200, restricting its further extension, thereby achieving two different extension positions without changing the stroke of the first pushing component 500. This design effectively solves the problem that traditional lifting equipment cannot adapt to the support needs of different width car bodies due to its fixed extension length, and is particularly suitable for scenarios where large and small car models are produced on mixed production lines. This structure adopts a mechanical limiting method, which is highly reliable, has a fast response, and does not require a complex control system or high-cost actuators, significantly improving the applicability and economy of the equipment.

[0039] In some embodiments, the support frame 200 includes a support rod 201, and a first pushing assembly 500 is used to move the support rod 201. The support rod 201 is responsible for connecting to the first pushing assembly 500 and bearing the weight of the vehicle body.

[0040] In some embodiments, the support frame 200 includes a limiting rod 203 connected to the support rod 201, and the limiting rod 203 abuts against the limiting member 700. The limiting rod 203 is specifically designed to cooperate with the limiting member 700 to achieve precise control of the extension position. This structure has a clear division of labor, facilitates manufacturing and assembly, and enhances overall rigidity and stability. The setting of the limiting rod 203 makes the function of the limiting member 700 more concentrated and effective, avoiding deformation or wear problems caused by uneven force on the support frame 200. In addition, this design also facilitates subsequent maintenance and component replacement, improves the maintainability and service life of the equipment, and has good engineering practical value.

[0041] In some embodiments, the length direction of the support rod 201 is the same as its own direction of movement. That is, the length direction of the support rod 201 is the same as the pushing direction of the first pushing assembly 500. Therefore, when the support rod 201 extends, it extends along its own length direction, which is consistent with the output direction of the first pushing assembly 500, reducing the generation of lateral force or bending moment.

[0042] In some embodiments, the support frame 200 is also slidably connected to the base 100, and the pressure on the support frame 200 can be directly transmitted to the base 100. This ensures that the first pushing component 500 is only used to drive the support frame 200 to extend and retract, and the first pushing component 500 is not subjected to pressure from the vehicle body, thereby avoiding damage to the first pushing component 500.

[0043] In some embodiments, a first slide rail 400 is further provided on the base 100, the length direction of the first slide rail 400 being the same as the pushing direction of the first pushing component 500; the support rod 201 is slidably connected to the first slide rail 400 along its length. The first slide rail 400 effectively improves the stability and guiding accuracy of the support frame 200 during movement, preventing the support frame 200 from shifting or jamming, and ensuring the stability and safety of the vehicle transfer process. This structure is particularly suitable for high-load, high-frequency working environments, such as automobile assembly workshops, and can significantly reduce equipment failure rates and extend service life. At the same time, the slide rail structure is simple, low-cost, and easy to install and adjust, providing an important guarantee for the reliable operation of the lifting machine.

[0044] Furthermore, the first slide rail 400 includes a slide rail and at least one slide block. The slide rail is connected to the support rod 201, and the slide block is connected to the base 100. The slide block is slidably connected to the slide rail, thereby achieving a sliding connection between the support rod 201 and the base 100. The slide block and slide rail are designed to bear a large weight and provide stable support when the support rod 201 supports the vehicle body, preventing damage to the base 100 or the support rod 201.

[0045] In another embodiment, the slide is connected to the base 100, and the slide block is connected to the support rod 201. These can be adapted to meet design requirements.

[0046] In some embodiments, there are two support rods 201 arranged in parallel, with the two support rods 201 parallel and spaced apart. It is understood that one support rod 201 is used to support the rear side of the vehicle body, and the other support rod 201 is used to support the front side of the vehicle body.

[0047] In some embodiments, the length direction of the limiting rod 203 is horizontally arranged and perpendicular to the moving direction of the support rod 201; the limiting rod 203 is located between the two support rods 201, and its two ends are respectively connected to the support rods 201. The limiting rod 203 forms a stable lateral limiting structure. After the limiting member 700 rises, it can accurately and reliably block the limiting rod 203, thereby precisely controlling the extension distance of the support frame 200. Ensuring that the length direction of the limiting rod 203 is perpendicular to the moving direction of the support frame 200 ensures that after the limiting member 700 contacts the limiting rod 203, the limiting member 700 will not slide along the length direction of the limiting rod 203, preventing the support frame 200 from shifting, enhancing the compactness and coordination of the overall structure, avoiding equipment malfunctions or inadequate vehicle body support due to inaccurate limiting, and further ensuring the accuracy and safety of transferring different vehicle models in mixed-line production.

[0048] In some embodiments, the support frame 200 further includes a connecting rod 202 that connects the two support rods 201.

[0049] Specifically, the connecting rod 202 is located at the end of the support rod 201 used to support the vehicle. It connects the two support rods 201, ensuring that the distance between the support rods 201 remains constant, thereby guaranteeing that the vehicle body can be supported to the correct position each time.

[0050] In some embodiments, the connecting rod 202 is horizontally positioned along its length and perpendicular to the moving direction of the support rod 201. That is, the connecting rod 202 is parallel to the limiting rod 203. The output end of the first pushing assembly 500 is connected to the connecting rod 202. The connecting rod 202 serves as the force-bearing point of the first pushing assembly 500, resulting in a more uniform thrust distribution and preventing deformation or damage caused by excessive force at a single point. This structural design is reasonable and suitable for scenarios requiring the load-bearing capacity of the vehicle body and precise horizontal displacement. It effectively improves the stability and safety of the lifting machine during vehicle transport, while simplifying the installation and debugging process of the drive components.

[0051] It is understandable that a push assembly includes a fixed end and an output end. The fixed end is typically the support point or anchor point of the push assembly; the output end is typically the part that outputs or moves. During operation, the fixed end of the push assembly usually does not change position relative to the overall structure, while the output end moves relative to the overall structure. Taking a cylinder as an example, the cylinder body is the fixed end, and the piston rod is the output end. Taking an electric push rod as an example, the cylinder body is the fixed end, and the push rod is the output end. The output direction of the push assembly is the direction in which the output end moves. The fixed end and output end of the first and second push assemblies in this paper both follow this configuration.

[0052] In another embodiment, the fixed end of the first pushing component 500 is fixed to the base 100, and the output end of the first pushing component 500 is fixed to the support rod 201. To ensure that the two support rods 201 move smoothly and synchronously, two first pushing components 500 are provided. The two first pushing components 500 are respectively connected to the two support rods 201, and the two first pushing components 500 push the support rods 201 synchronously to realize the movement of the support frame 200.

[0053] In some embodiments, to ensure that the support rod 201 can easily extend into the bottom of the vehicle body, the support rod 201 includes a first horizontal segment, an inclined segment, and a second horizontal segment connected in sequence. The first horizontal segment is slidably connected to the base 100, the inclined segment slopes downwards away from the base 100, and the second horizontal segment is connected to the end of the inclined segment away from the first horizontal segment. This design allows the second horizontal segment, which supports the vehicle body, to be lower in height than the first horizontal segment, making it easier to insert into the bottom of the vehicle body and improving production efficiency. Furthermore, the second horizontal segment allows for a lower height of the connecting rod 202, enabling better connection of the output end of the second push assembly 600 to the connecting rod 202.

[0054] In some embodiments, a support block 300 is provided at the top of the extended end of the support rod 201, and the support block 300 is used to contact the vehicle body. The support block 300 facilitates alignment with the support points on the vehicle body and prevents scratches on the vehicle body surface during transportation, thus improving product quality. At the same time, the support block 300 is easy to replace or adjust according to changes in vehicle model, enhancing the adaptability and flexibility of the equipment. This structure is simple and practical, protecting the vehicle body and extending the service life of the support frame 200.

[0055] Furthermore, the support block 300 is made of polyurethane material. Since the support block 300 is in direct contact with the vehicle body support, the softer material can prevent the vehicle body from being scratched during the vehicle transportation process.

[0056] In some embodiments, the first actuation assembly 500 is a cylinder. It includes a first cylinder body and a first output rod, the first output rod being slidably connected to the first cylinder body. The first cylinder body is connected to the base 100, and the first output rod is connected to the support frame 200. Specifically, the first output rod is connected to the connecting rod 202.

[0057] Furthermore, due to physical characteristics, the support frame 200 will inevitably undergo slight deformation when subjected to force. Therefore, a non-rigid connection is used between the first cylinder and the base 100. The first cylinder and the base 100 are hinged. Even if the end of the support frame 200 changes height, the angle of the first pushing assembly 500 can be adjusted accordingly to adapt, reducing the possibility of damage to the first pushing assembly 500.

[0058] Furthermore, the end of the first output rod is also connected to the connecting rod 202 in a non-rigid manner. The first output rod and the connecting rod 202 are hinged. Since both ends of the first pushing assembly 500 are hinged, the angle of the first pushing assembly 500 can change more effectively when the height of the end of the support frame 200 changes. This simultaneously meets the requirements for pushing the support frame 200 to extend and retract.

[0059] In another embodiment, the first actuation component 500 is a hydraulic cylinder. Its connection method is the same as when a pneumatic cylinder is used.

[0060] In another embodiment, the first actuation component 500 is an electric actuator.

[0061] It is worth noting that the preferred embodiment of the first pushing component 500 is a cylinder, because the cylinder has a faster pushing speed, meeting the needs of efficient production. If a first pushing hydraulic cylinder or electric push rod is used, its speed is slower, and its stroke is easier to control electronically. For example, an electric push rod can directly control different strokes, while a hydraulic cylinder can control the pressure of the hydraulic oil electronically. The structural solution of this application still has the advantages of using a hydraulic cylinder and an electric push rod as the first pushing component 500. The preferred embodiment is that the first pushing component 500 uses a cylinder, which has a higher degree of compatibility with the structural solution of this application. When it is necessary to limit the stroke, the cylinder pushes the support frame 200 to extend, and the limiting rod 203 on the support frame 200 contacts the limiting member 700 and is limited. The cylinder will not be damaged due to excessive pressure caused by sudden obstruction.

[0062] In some embodiments, the limiting member 700 is slidably connected to the base 100, and the force exerted on the limiting member 700 by the limiting rod 203 can be directly transmitted to the base 100. This ensures that the second pushing component 600 is only used to move the limiting member 700 up and down, and the second pushing component 600 is not subjected to lateral impact forces, thereby reducing the possibility of damage to the second pushing component 600.

[0063] In some embodiments, a second slide rail 800 is further provided on the base 100. The second slide rail 800 is vertically arranged along its length, and the limiting member 700 is slidably connected to the second slide rail 800 along its length. The second slide rail 800 ensures the guiding accuracy and stability of the limiting member 700 during the lifting process. The second slide rail 800 can effectively resist the shaking or deflection that may occur when the limiting member 700 is subjected to force, ensuring that its position is accurate and its function is reliable when in contact with the limiting rod 203. At the same time, it avoids excessive force on the second pushing component 600, thus protecting the second pushing component 600.

[0064] In some embodiments, the top of the second slide rail 800 is lower than the bottom wall of the limiting rod 203. This ensures that the limiting rod 203 does not interfere with the second slide rail 800 when the support frame 200 moves a longer distance without the need for the pushing assembly.

[0065] In some embodiments, the limiting member 700 is rod-shaped and vertically arranged. The rod-shaped limiting member 700 ensures reliable line or surface contact when it comes into contact with the horizontally arranged limiting rod 203, guaranteeing effective transmission of the blocking force and avoiding stress concentration or slippage that may occur with point contact. The vertically arranged guiding method is completely consistent with the lifting direction of the second pushing assembly 600, allowing the limiting member 700 to move vertically accurately and stably under the guidance of the second slide rail 800.

[0066] In some embodiments, there are two second slide rails 800 symmetrically arranged on both sides of the limiting member 700. The cross-section of the second slide rails 800 is U-shaped or concave, and the openings of the two second slide rails 800 face each other. The limiting member 700 is slidably connected between the two second slide rails 800.

[0067] Specifically, a roller 900 is rotatably connected to the limiting member 700, and the roller 900 is located inside the second slide rail 800.

[0068] Understandably, when the limiting member 700 extends, to prevent the roller 900 from contacting the limiting rod 203 and causing damage, the two slide rails are spaced apart perpendicular to the approach direction of the limiting rod 203, and the corresponding rollers 900 are also located on both sides close to the two support rods 201.

[0069] In some embodiments, the lifting machine also includes a pad located between the limiting member 700 and the limiting rod 203. The pad cushions the impact between the limiting member 700 and the limiting rod 203, reducing noise and vibration, and minimizing wear between metal parts. This design not only improves the smoothness and comfort of equipment operation but also extends the service life of the limiting member 700 and the limiting rod 203, reducing maintenance frequency and costs.

[0070] Furthermore, the pad is made of polyurethane, which reduces noise and vibration when the limit rod 203 contacts the limit member 700, and also reduces mechanical wear.

[0071] Specifically, the pad is set on the limit rod 203.

[0072] In some embodiments, a friction wheel 110 is rolledly connected to the limiting member 700. The friction wheel 110 is used to contact the pad. Because the support frame 200 will produce a small amount of oscillation when supporting the vehicle body, the contact between the friction wheel 110 and the pad changes the sliding friction into rolling friction, reducing the coefficient of friction and improving the durability of the structure.

[0073] In some embodiments, the second actuation component 600 is a cylinder. Cylinders have advantages such as simple structure, low cost, rapid response, and convenient maintenance. As a mature pneumatic component, cylinders have high reliability and adaptability in industrial environments, and are especially suitable for high-load, high-frequency lifting and limiting scenarios.

[0074] In another embodiment, the second actuation component 600 may also be a hydraulic cylinder or an electric actuator.

[0075] Secondly, this application also provides a production line for producing vehicles, including the aforementioned lifting machine. This production line can automatically adjust the support spacing of the lifting machine according to the vehicle model, enabling mixed-line production of both large and small models, significantly improving the adaptability and production efficiency of the production line. By adopting a mechanical variable-pitch lifting solution, the high cost and long cycle time of traditional electric cylinder solutions are avoided, providing automobile manufacturers with an economical, reliable, and flexible transfer solution, supporting modern production models of multiple models and small batches.

[0076] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A lifting machine, characterized in that, It includes: Base (100); A first pushing component (500) is disposed on the base (100); A support frame (200) is disposed on the first pushing assembly (500), the first pushing assembly (500) being used to push the support frame (200) to extend or retract in the horizontal direction; A second pushing component (600) is disposed on the base (100); A limiting member (700) is connected to the second pushing component (600), and the second pushing component (600) drives the limiting member (700) to move in the vertical direction; When the limiting member (700) extends, it is used to contact the support frame (200) to limit the extension of the support frame (200).

2. The lifting machine according to claim 1, characterized in that, The support frame (200) includes: Support rod (201); A limiting rod (203) is connected to the support rod (201) and is used to abut against the limiting member (700).

3. The lifting machine according to claim 2, characterized in that, The base (100) is also provided with a first slide rail (400), the length direction of the first slide rail (400) is the same as the pushing direction of the first pushing component (500); the support rod (201) is slidably connected to the first slide rail (400) along the length direction of the first slide rail (400).

4. The lifting machine according to claim 2, characterized in that, The support frame (200) also includes a connecting rod (202); There are two support rods (201) arranged in parallel; the connecting rod (202) connects the two support rods (201); the output end of the first pushing component (500) is connected to the connecting rod (202).

5. The lifting machine according to claim 4, characterized in that, The length direction of the limiting rod (203) is horizontal and perpendicular to the moving direction of the support rod (201); The limiting rod (203) is located between the two support rods (201), and the two ends of the limiting rod (203) are respectively connected to the support rods (201).

6. The lifting machine according to claim 4, characterized in that, A support block (300) is provided at the top of one end of the support rod (201), and the support block (300) is used to contact the vehicle body.

7. The lifting machine according to claim 2, characterized in that, The base (100) is also provided with a second slide rail (800), the length direction of the second slide rail (800) is vertically arranged, and the limiting member (700) is slidably connected to the second slide rail (800) along the length direction of the second slide rail (800); The top of the second slide rail (800) is lower than the bottom wall of the limiting rod (203).

8. The lifting machine according to claim 7, characterized in that, It also includes a pad, which is located between the limiting member (700) and the limiting rod (203).

9. The lifting machine according to claim 1, characterized in that, The first actuation component (500) is a cylinder; And / or, The second actuation component (600) is a cylinder.

10. A production line, characterized in that, The production line is used to produce vehicles, and the production line includes a lifting machine as described in any one of claims 1 to 9.

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