Material lifting tooling and electric vehicle production system

Abstract

The utility model provides a kind of material lifting frock and electric vehicle production system, it is related to production system technical field, including fixed frame, lifting platform frame and lifting mechanism;Lifting mechanism includes upper slide rail, is fixed in the bottom of lifting platform frame;Lower slide rail, it is parallelly arranged below upper slide rail and is fixed to fixed frame;Linkage assembly, including scissor lifting structure;Push-pull component is fixedly installed in fixed frame and its output end is connected with the transmission of second end of part articulated rod, push-pull component can be horizontally telescopic drive corresponding articulated rod, make second end of part articulated rod reciprocate along lower slide rail, simultaneously, second end of part articulated rod reciprocate along upper slide rail, to drive upper slide rail and lifting platform frame lifting.The utility model has alleviated the technical problem that existing technology must be lifted to printing work position operating platform by manpower handling mode with material box vertically, and the labor intensity of operator is high.

Description

Technical Field

[0001] This utility model relates to the field of production system technology, and in particular to a material lifting tool and an electric vehicle production system. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the production scale of electric vehicles and other vehicles is constantly expanding. On the vehicle production line, the certificate of conformity, as an important document for vehicle delivery, has become an indispensable part of the standardized production process through its printing and affixing. In the current mainstream production workshop layout, to optimize work flow, the height of the printing station operating platform is set within a range that is convenient for printing personnel to perform printing operations.

[0003] Under the current production model, material delivery personnel need to transport material boxes containing certificates of conformity, screws, labels, and other materials from the ground storage area to the printing station. Due to the height difference between the printing station's operating platform and the ground, delivery personnel must manually lift the material boxes vertically onto the platform. This repetitive, heavy-duty lifting operation needs to be performed dozens of times a day, leading to excessive physical exertion for workers and increasing the risk of musculoskeletal injuries. This problem is particularly pronounced during peak production seasons when capacity is ramping up, making it one of the bottlenecks affecting the overall efficiency of the production line. Utility Model Content

[0004] The purpose of this utility model is to provide a material lifting tooling and an electric vehicle production system to alleviate the technical problem in the prior art where delivery personnel must manually lift the material boxes vertically to the printing station operating platform, resulting in high labor intensity for the operators.

[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions: In a first aspect, this utility model provides a material lifting fixture, including a fixed frame, a lifting platform frame, and a lifting mechanism; The fixed frame has an installation space that extends through it from above. The lifting platform frame is located inside the installation space, and its top surface is used to support the material box; The lifting mechanism includes: The upper slide rail is fixed to the bottom of the lifting platform frame; The lower slide rail is parallel to the lower slide rail and fixed to the fixed frame; The linkage component includes a scissor lift structure, which includes a plurality of hinged rods that are hinged to each other. The first end of some of the hinged rods is hinged to the upper slide rail or the lower slide rail, and the second end of some of the hinged rods is slidably engaged with the upper slide rail or the lower slide rail. A push-pull assembly is fixedly installed on the fixed frame, and its output end is connected to the second end of a portion of the hinge rods. The push-pull assembly can horizontally extend and retract to drive the corresponding hinge rods, causing the second end of a portion of the hinge rods to slide back and forth along the lower slide rail, while the second end of a portion of the hinge rods slides back and forth along the upper slide rail, thereby driving the upper slide rail and the lifting platform frame to rise and fall.

[0006] In an optional implementation, the linkage component includes at least one of the scissor lift structures; With the vertical direction as Z, the extension direction of the upper slide rail and the lower slide rail as Y, and the direction perpendicular to the Y in the horizontal plane as X: each of the scissor lift structures includes at least one hinge rod group arranged and connected along the Z direction, and each hinge rod group includes two hinge rods that cross each other in an X shape in the vertical plane and are hinged to each other at the intersection. Along the X direction, the hinge rod has a first end and a second end; in the uppermost hinge rod group, the first end of one hinge rod is higher than the second end and its first end is hinged to the upper slide rail, and the second end of the other hinge rod is higher than the first end and its second end is slidably engaged with the upper slide rail; in the lowermost hinge rod group, the first end of one hinge rod is lower than its second end and its first end is hinged to the lower slide rail, and the second end of the other hinge rod is lower than its first end and its second end is slidably engaged with the lower slide rail.

[0007] In an optional embodiment, the linkage component includes at least two of the scissor lift structures arranged at intervals along the X direction; The linkage component also includes a first limiting shaft, a second limiting shaft, a first sliding shaft, and a second sliding shaft; The two ends of the first limiting shaft are hinged to the lower sliding rail, and the two ends of the second limiting shaft are hinged to the upper sliding rail; in the at least two scissor lift structures, the first end of a portion of the hinge rods is at a first height and hinged to the first limiting shaft, and the first end of a portion of the hinge rods is at a second height and hinged to the second limiting shaft. The two ends of the first sliding shaft are slidably engaged with the lower sliding rail, and the two ends of the second sliding shaft are slidably engaged with the upper sliding rail; in the at least two scissor lift structures, the second end of a portion of the hinge rods is at a first height and hinged to the first sliding shaft, and the second end of a portion of the hinge rods is at a second height and hinged to the second sliding shaft. The output end of the push-pull assembly is connected to the sliding shaft one in a transmission connection so that the sliding shaft one can be driven to slide back and forth along the lower slide rail, while simultaneously driving the sliding shaft two to slide back and forth along the upper slide rail.

[0008] In an optional embodiment, the push-pull assembly includes a drive cylinder, a piston rod, and a connecting seat; The drive cylinder is fixed to the fixed frame, one end of the piston rod is telescopically connected to the inside of the drive cylinder, the connecting seat is fixed to the other end of the piston rod, and the sliding shaft is fixedly connected to the connecting seat.

[0009] In an optional embodiment, sliding wheels that contact the corresponding slide rail surfaces are respectively fitted at both ends of the first sliding shaft and the second sliding shaft.

[0010] In an optional embodiment, two fixing seats are fixed on the lower surface of the upper slide rail and the upper surface of the lower slide rail, and the fixing seats are provided with mounting holes inside; the two ends of the first limiting shaft and the two ends of the second limiting shaft are respectively rotatably installed in the mounting holes of the corresponding fixing seats.

[0011] In an optional embodiment, the number of upper slide rails and the number of lower slide rails are the same as the number of scissor lift structures and both extend along the Y direction. The multiple upper slide rails and the multiple lower slide rails are distributed at intervals along the X direction, and the multiple upper slide rails and the multiple lower slide rails are arranged vertically opposite each other along the Z direction.

[0012] In an optional implementation, in each of the said hinge rod assemblies: The two hinge rods are hinged together by a hinge shaft; bearing seats are fixed on the opposite sides of the intersecting parts of the two hinge rods respectively, and the two ends of the hinge shaft after passing through the hinge holes provided on the two hinge rods are rotatably installed inside the corresponding bearing seats respectively.

[0013] In an optional embodiment, a base plate is fixedly connected to the bottom of the fixed frame; The lower slide rail is fixed to the base plate; and / or, a mounting base is fixed to the upper surface of the base plate, and the push-pull assembly is mounted on the mounting base.

[0014] Secondly, this utility model provides an electric vehicle production system, including the material lifting fixture described in any of the foregoing embodiments.

[0015] Specifically, in the present invention, the term "and / or" indicates that the structure before "and / or" and the structure after "and / or" are set simultaneously or selectively.

[0016] The embodiments of this utility model can achieve at least the following beneficial effects: The material lifting fixture provided in this embodiment of the utility model achieves efficient, stable and safe operation during the material lifting process by setting a fixed frame, a lifting platform frame and a lifting mechanism composed of an upper slide rail, a lower slide rail, a linkage component, a push-pull component, etc.

[0017] In use, the material box is pushed to the top of the lifting platform frame. The second end of the hinge rod in the scissor lift structure, which is connected to the output end of the push-pull component, is pushed and pulled by the push-pull component. This causes the second end of part of the hinge rod to slide back and forth along the lower slide rail. Under the action of the hinge relationship of multiple hinge rods in the scissor lift structure, the second end of part of the hinge rod slides back and forth along the upper slide rail, thereby raising and lowering the upper slide rail and the lifting platform frame. Delivery personnel can complete the loading and unloading of the material box without having to manually handle it in the vertical direction, which can reduce the labor intensity of employees.

[0018] In particular, this material lifting fixture uses multiple hinged rods that are hinged to each other in the scissor lift structure, combined with upper and lower sliding rails and push-pull components to form a linkage lifting mechanism. This structure drives the linkage deformation of the scissor lift structure through the horizontal extension and retraction movement of the push-pull components. At the same time, the upper and lower sliding rails provide a smooth sliding path, avoiding the deviation or shaking problems that may occur during the operation of traditional lifting devices. The lifting action of the lifting platform frame is more stable and reliable.

[0019] In addition, this utility model embodiment also provides several optional implementation methods. The specific implementation method section of this specification will provide a detailed description and explanation of the specific structure and functional effects of these optional implementation methods. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the working state of the material lifting fixture provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the overall structure assembly of the material lifting tooling provided in an embodiment of the present utility model; Figure 3 An exploded view of the overall structure of the material lifting fixture provided in this embodiment of the utility model; Figure 4 for Figure 3 Enlarged view of the local structure of region A in the middle; Figure 5 for Figure 3 Enlarged view of the local structure of region B in the middle.

[0022] Icons: 100-Material box; 1-Fixed frame; 11-Base plate; 2-Lifting platform frame; 3-Upper slide rail; 4-Lower slide rail; 5-Fixed seat; 6-Linkage assembly; 61-Hinge rod; 611-Bearing seat; 62-Limit shaft one; 63-Limit shaft two; 64-Sliding shaft one; 65-Sliding shaft two; 66-Sliding wheel; 67-Hinge shaft; 7-Push-pull assembly; 71-Drive cylinder; 72-Piston rod; 73-Connecting seat; 8-Mounting seat. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, the terms "horizontal" and "vertical" do not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] First aspect This embodiment provides a material lifting fixture, referring to... Figures 1 to 3 The material lifting fixture includes a fixed frame 1, a lifting platform frame 2, and a lifting mechanism; wherein: the fixed frame 1 has an installation space that extends through it from above. The lifting platform frame 2 is located inside the installation space, and its top surface is used to support the material box 100. The lifting mechanism includes an upper slide rail 3, a lower slide rail 4, a linkage component 6, and a push-pull component 7. The upper slide rail 3 is fixed to the bottom of the lifting platform frame 2. The lower slide rail 4 is parallel to the upper slide rail 3 and fixed to the fixed frame 1. The linkage component 6 includes a scissor lift structure, which includes multiple hinged rods 61 that are hinged to each other. The first end of some hinged rods 61 is hinged to the upper slide rail 3 or the lower slide rail 4, and the second end of some hinged rods 61 is slidably engaged with the upper slide rail 3 or the lower slide rail 4. The push-pull component 7 is fixedly installed on the fixed frame 1, and its output end is connected to the second end of some hinged rods 61. The push-pull component 7 can horizontally extend and retract to drive the corresponding hinged rods 61, causing the second end of some hinged rods 61 to slide back and forth along the lower slide rail 4, while the second end of some hinged rods 61 slides back and forth along the upper slide rail 3, thereby driving the upper slide rail 3 and the lifting platform frame 2 to rise and fall.

[0031] Specifically, one side of the installation space has a notch through which the material box 100 can enter the installation space and be placed on the upper surface of the lifting platform frame 2.

[0032] The material lifting fixture provided in this embodiment achieves efficient, stable and safe operation during the material lifting process by setting up a fixed frame 1, a lifting platform frame 2 and a lifting mechanism consisting of an upper slide rail 3, a lower slide rail 4, a linkage component 6, and a push-pull component 7.

[0033] In use, the material box is pushed to the top of the lifting platform frame 2. The second end of the hinge rod 61, which is connected to the output end of the push-pull assembly 7 in the scissor lifting structure, is pushed and pulled by the push-pull assembly 7. This causes the second end of part of the hinge rod 61 to slide back and forth along the lower slide rail 4. Under the action of the hinge relationship of multiple hinge rods 61 in the scissor lifting structure, the second end of part of the hinge rod 61 slides back and forth along the upper slide rail 3, thereby raising and lowering the upper slide rail 3 and the lifting platform frame 2. Delivery personnel can complete the loading and unloading of the material box without having to manually handle it in the vertical direction, which can reduce the labor intensity of employees.

[0034] In particular, this material lifting fixture uses multiple hinged rods that are hinged to each other in the scissor lift structure, combined with upper and lower sliding rails and push-pull components to form a linkage lifting mechanism. This structure drives the linkage deformation of the scissor lift structure through the horizontal extension and retraction movement of the push-pull components. At the same time, the upper and lower sliding rails provide a smooth sliding path, avoiding the deviation or shaking problems that may occur during the operation of traditional lifting devices. The lifting action of the lifting platform frame is more stable and reliable.

[0035] It should be noted that in this embodiment, the fixed frame 1 and the lifting platform frame 2 can be, but are not limited to, composed of multiple steel pipes connected together. This reduces weight while maintaining a certain structural strength, allowing operators to easily change working positions according to workstation needs, making it more flexible in use. The specific fixing method for the lower slide rail 4 to the fixed frame 1 includes, but is not limited to, welding or fixing with screws or bolt-nut assemblies.

[0036] Reference Figure 2 and Figure 3 In an optional embodiment of this example, the linkage component 6 includes at least one scissor lift structure. Taking the vertical direction as the Z-direction, the extension direction of the upper slide rail 3 and the lower slide rail 4 as the Y-direction, and the direction perpendicular to the Y-direction in the horizontal plane as the X-direction: each scissor lift structure includes at least one hinged rod group arranged and connected along the Z-direction. Each hinged rod group includes two hinged rods 61 that intersect each other in an X-shape in the vertical plane and are hinged to each other at the intersection. Along the X-direction, the hinged rod 61 has a first end and a second end; in the uppermost hinged rod group, the first end of one hinged rod 61 is higher than its second end and its first end is hinged to the upper slide rail 3, while the second end of the other hinged rod 61 is higher than its first end and its second end is slidably engaged with the upper slide rail 3. In the lowermost hinged rod group, the first end of one hinged rod 61 is lower than its second end and its first end is hinged to the lower slide rail 4, while the second end of the other hinged rod 61 is lower than its first end and its second end is slidably engaged with the lower slide rail 4.

[0037] It should be noted that when the scissor lift structure includes a hinge rod group, this hinge rod group is both the uppermost hinge rod group and the lowermost hinge rod group. The first ends of the two hinge rods 61 in this hinge rod group are hinged to the upper slide rail 3 and the lower slide rail 4 respectively, and the second ends are slidably engaged with the upper slide rail 3 and the lower slide rail 4 respectively.

[0038] In this optional embodiment, the horizontal driving force is efficiently converted into vertical lifting motion by the mutual hinge and sliding engagement of multiple hinged rods in the scissor lift structure, combined with the horizontal telescopic drive of the push-pull assembly. Furthermore, the number of Z-axis connected hinged rod groups can be designed according to actual height requirements, making it suitable for lifting material boxes of different heights and weights.

[0039] It should be noted that, in this optional embodiment, the output end of the push-pull assembly 7 can be connected to the hinge rod 61 of any layer of hinge rod group in the Z-direction direction. Preferably, but not limited to, the lower end of the second hinge rod 61 of the two hinge rods in the lowest layer of hinge rod group is connected to the output end of the push-pull assembly 7. This structure allows the scissor lift structure to drive the transmission step by step from bottom to top, making the lifting action more stable and reliable. The initial included angle between the two hinge rods 61 in each hinge rod group can be preset as needed.

[0040] In addition, when the linkage component 6 includes only a scissor lift structure, the size of the upper slide rail 3 in the horizontal plane should be as large as possible, or the upper slide rail 3 should be set on the lower surface of a support plate, and the support plate should be fixed to the lifting platform frame 2, and fixed in the middle area of ​​the lifting platform frame 2 as much as possible, so as to ensure that the lifting platform frame 2 will not tip over.

[0041] To further enhance lifting stability, in this optional embodiment, the linkage component 6 may further include at least two scissor lift structures spaced apart along the X direction; specifically, as shown... Figure 3 As shown, the linkage component 6 also includes a first limiting shaft 62, a second limiting shaft 63, a first sliding shaft 64, and a second sliding shaft 65; the two ends of the first limiting shaft 62 are hinged to the lower sliding rail 4, and the two ends of the second limiting shaft 63 are hinged to the upper sliding rail 3. In these scissor lift structures, the first end of a portion of the hinge rods 61 is at a first height and hinged to the first limiting shaft 62, and the first end of a portion of the hinge rods 61 is at a second height and hinged to the second limiting shaft 63; the two ends of the first sliding shaft 64 are slidably engaged with the lower sliding rail 4, and the two ends of the second sliding shaft 65 are slidably engaged with the upper sliding rail 3; furthermore, in these scissor lift structures, the second end of a portion of the hinge rods 61 is at a first height and hinged to the first sliding shaft 64, and the second end of a portion of the hinge rods 61 is at a second height and hinged to the second sliding shaft 65. The output end of the push-pull component 7 is connected to the first sliding shaft 64 for transmission, so as to drive the first sliding shaft 64 to reciprocate along the lower sliding rail 4, while simultaneously causing the second sliding shaft 65 to reciprocate along the upper sliding rail 3.

[0042] Specifically, the first limiting shaft 62, the second limiting shaft 63, the first sliding shaft 64, and the second sliding shaft 65 all extend along the X direction and pass through the through holes on the corresponding hinge rods 61 to achieve hinge connection with the corresponding hinge rods 61.

[0043] In this optional embodiment, the linkage assembly employs at least two scissor lift structures spaced apart along the X-direction; the first limiting shaft 62 is hinged at both ends to the lower sliding rail 4, and the second limiting shaft 63 is hinged at both ends to the upper sliding rail 3, serving as fixed hinge points at the lower and upper ends of the scissor structure, respectively providing support and limiting functions, preventing the hinge rod assembly from swinging freely in the non-lifting direction, and ensuring that the lifting action is performed along a preset trajectory; the first sliding shaft 64 is slidably engaged with the lower sliding rail 4, and the second sliding shaft 65 is slidably engaged with the upper sliding rail 3, respectively serving as movable links at the lower and upper ends of the scissor structure. The push-pull assembly 7 drives the sliding shaft 64 to slide, which in turn drives the sliding shaft 65 to move synchronously, realizing the synchronous deployment or retraction of the scissor structure in the upper and lower slide rails. The multiple scissor structures achieve efficient space utilization through the reasonable layout of the limiting shaft and the sliding shaft. At the same time, the push-pull assembly 7 only needs to drive one sliding shaft to realize the deployment or retraction of all scissor lifting structures, improving transmission efficiency and control precision. It also enhances the overall force balance and resistance to lateral forces of the linkage assembly 6, effectively preventing swaying or tilting during the lifting process.

[0044] It should be noted that, in this optional embodiment, preferably but not limited to, the first height is the height of the first end of the lower hinge rod 61 of the two hinge rods 61 in the lowest hinge rod group (which is also the height of the second end of the lower hinge rod 61 of the two hinge rods 61 in the lowest hinge rod group), and the second height is the height of the first end of the higher hinge rod 61 of the two hinge rods 61 in the highest hinge rod group (which is also the height of the second end of the higher hinge rod 61 of the two hinge rods 61 in the highest hinge rod group).

[0045] Among them, the push-pull component 7 has several optional structural types, for example, refer to Figure 4 In some optional embodiments, the push-pull assembly 7 includes a drive cylinder 71, a piston rod 72, and a connecting seat 73; the drive cylinder 71 is fixed to the fixed frame 1, one end of the piston rod 72 is telescopically connected to the inside of the drive cylinder 71, the connecting seat 73 is fixed to the other end of the piston rod 72, and a sliding shaft 64 passes through the connecting seat 73 and is fixedly connected to the connecting seat 73; the drive cylinder 71 can be a pneumatic cylinder or a hydraulic cylinder. In other optional embodiments, the push-pull assembly 7 can also be an electric push rod structure composed of a motor-ball screw nut assembly, or a transmission structure composed of a motor-gear rack and pinion transmission assembly, or other forms of transmission structure.

[0046] In some alternative embodiments, sliding wheels 66 that contact the corresponding slide rail surfaces are respectively fitted at both ends of the first sliding shaft 64 and the second sliding shaft 65. In this alternative embodiment, by setting sliding wheels 66 at both ends of the sliding shaft, the sliding friction that may have existed is transformed into rolling friction, which significantly reduces the frictional resistance when the sliding shaft moves on the upper and lower slide rails, avoids jamming, and thus improves the smoothness and fluidity of the sliding process, improves the lifting stability and lifting efficiency.

[0047] For the hinged connection between the limiting shaft and the upper and lower slide rails, to facilitate assembly, in an optional embodiment of this example, two fixing seats 5 are fixed on the lower surface of the upper slide rail 3 and the upper surface of the lower slide rail 4, and the fixing seats 5 are provided with mounting holes inside; the two ends of the first limiting shaft 62 and the two ends of the second limiting shaft 63 are respectively rotatably installed in the mounting holes of the corresponding fixing seats 5. In this optional embodiment, the fixing seats 5 are fixedly installed on the upper slide rail 3 or the lower slide rail 4 by bolts or other connecting parts. The design of the fixing seats 5 provides a stable support point, making the limiting shaft more stable when rotating, reducing loosening or displacement caused by improper assembly, thereby enhancing the stability of the entire structure. Furthermore, since the limiting shaft is rotatably installed in the mounting holes of the fixing seats 5, the limiting shaft can be easily disassembled and reinstalled, reducing maintenance difficulty and cost.

[0048] In this embodiment, regarding the specific arrangement of the upper and lower slide rails, the upper slide rail 3 and the lower slide rail 4 can each be an integral plate structure, or, as shown below... Figures 1 to 3 As shown, the number of upper slide rails 3 and lower slide rails 4 are the same as the number of scissor lift structures and both extend along the Y direction. Multiple upper slide rails 3 and multiple lower slide rails 4 are distributed at intervals along the X direction. Multiple upper slide rails 3 and multiple lower slide rails 4 are arranged one above the other along the Z direction to improve the guiding accuracy of the upper and lower slide rails for the scissor lift structure, reduce the movement deviation of the scissor lift structure during the lifting process, and further enhance the lifting stability.

[0049] Reference Figure 5 In an optional embodiment of this example, in each articulated rod group: two articulated rods 61 are hinged together by articulated shafts 67; bearing seats 611 are fixed on the opposite sides of the intersecting parts of the two articulated rods 61 respectively; the two ends of the articulated shafts 67 after passing through the articulation holes provided on the two articulated rods 61 are rotatably installed inside the corresponding bearing seats 61.

[0050] Specifically, the bearing housing 611 is fixedly installed on the hinge rod 61 by bolts. The axis of the through hole on the bearing housing 611 coincides with the axis of the hinge hole on the hinge rod 61 for mounting the hinge shaft 67. Both ends of the hinge shaft 67 extend out of the bearing housing 611 on both sides, and limiting rings are fixedly sleeved on both ends of the hinge shaft 67. The outer diameter of the limiting rings is larger than the diameter of the through hole on the bearing housing 611 to prevent the hinge shaft 67 from detaching from the hinge rod 61.

[0051] In this optional embodiment, the bearing housing 611 provides additional support for the hinge shaft 67, reducing the swaying and loosening of the hinge point and ensuring the stability and reliability of the hinge rod assembly during movement. At the same time, the hinge shaft 67 can rotate freely inside the bearing housing 611, reducing the frictional resistance of the hinge point. This not only improves the smoothness of the movement of the hinge rod assembly but also reduces wear caused by friction, extending the service life of the hinge rod assembly. In addition, by setting the bearing housing 611 at the intersection of the hinge rods 61, the load-bearing capacity of the hinge point is increased, the structural strength of the hinge rod assembly is enhanced, and the scissor lift structure can withstand greater loads during operation, improving the reliability and durability of the linkage component 6.

[0052] In an optional embodiment of this example, a base plate 11 is fixedly connected to the bottom of the fixed frame 1; the lower slide rail 4 is fixed to the base plate 11. In this optional embodiment, the base plate 11 provides an additional support surface, making the lower slide rail 4 more stable during operation and reducing displacement and loosening caused by vibration or external force. Optionally, a mounting base 8 is fixed to the upper surface of the base plate 11, specifically by bolts or other connectors. The push-pull assembly 7 is mounted on the mounting base 8. In this optional structure, the mounting base 8 provides an additional support point, making the push-pull assembly 7 more stable during operation and reducing displacement and loosening caused by vibration or external force. In addition, since the push-pull assembly 7 is mounted on the mounting base 8, if maintenance or replacement is required, the assembly on the mounting base 8 can be operated directly without disassembling the entire base plate 11 or the fixed frame 1. This design simplifies the maintenance process and reduces maintenance costs and time.

[0053] Second aspect This embodiment provides an electric vehicle production system, which includes material lifting fixtures provided in any optional implementation of the first aspect.

[0054] The specific structure and achievable effects of the material lifting fixture in the electric vehicle production system provided in this embodiment can be obtained by referring to the optional or preferred embodiments in the first aspect.

[0055] Finally, it should be noted that: 1. In this specification, "and / or" means that the structure before "and / or" and the structure after "and / or" are set simultaneously or selectively; 2. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually. The above embodiments in this specification are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A material lifting fixture, characterized in that, It includes a fixed frame (1), an elevation platform frame (2), and an elevation mechanism; The fixed frame (1) has an installation space inside that extends through the fixed frame (1) from above; The lifting platform frame (2) is located inside the installation space, and its top surface is used to support the material box (100). The lifting mechanism includes: The upper slide rail (3) is fixed to the bottom of the lifting platform frame (2); The lower slide rail (4) is parallel to the lower slide rail (3) and fixed to the fixed frame (1). The linkage component (6) includes a scissor lift structure, which includes a plurality of hinge rods (61) that are hinged to each other. The first end of some of the hinge rods (61) is hinged to the upper slide rail (3) or the lower slide rail (4), and the second end of some of the hinge rods (61) is slidably engaged with the upper slide rail (3) or the lower slide rail (4). The push-pull assembly (7) is fixedly installed on the fixed frame (1) and its output end is connected to the second end of a portion of the hinge rod (61). The push-pull assembly (7) can horizontally extend and retract to drive the corresponding hinge rod (61), causing the second end of a portion of the hinge rod (61) to slide back and forth along the lower slide rail (4), while the second end of a portion of the hinge rod (61) slides back and forth along the upper slide rail (3), thereby driving the upper slide rail (3) and the lifting platform frame (2) to rise and fall.

2. The material lifting fixture according to claim 1, characterized in that, The linkage component (6) includes at least one of the scissor lift structures; With the vertical direction as Z, the extension direction of the upper slide rail (3) and the lower slide rail (4) as Y, and the direction perpendicular to the Y direction in the horizontal plane as X: each of the scissor lift structures includes at least one hinge rod group arranged and connected along the Z direction, and each hinge rod group includes two hinge rods (61) that cross each other in an X shape in the vertical plane and are hinged to each other at the intersection. Along the X direction, the hinge rod (61) has a first end and a second end; of the two hinge rods (61) in the uppermost hinge rod group, the first end of one hinge rod (61) is higher than the second end and its first end is hinged to the upper slide rail (3), and the second end of the other hinge rod (61) is higher than the first end and its second end is slidably engaged with the upper slide rail (3); of the two hinge rods (61) in the lowermost hinge rod group, the first end of one hinge rod (61) is lower than its second end and its first end is hinged to the lower slide rail (4), and the second end of the other hinge rod (61) is lower than its first end and its second end is slidably engaged with the lower slide rail (4).

3. The material lifting fixture according to claim 2, characterized in that, The linkage component (6) includes at least two of the scissor lift structures arranged at intervals along the X direction; The linkage component (6) also includes a first limiting shaft (62), a second limiting shaft (63), a first sliding shaft (64), and a second sliding shaft (65). The two ends of the first limiting shaft (62) are hinged to the lower sliding rail (4), and the two ends of the second limiting shaft (63) are hinged to the upper sliding rail (3); in the at least two scissor lift structures, the first end of a portion of the hinge rods (61) is at a first height and hinged to the first limiting shaft (62), and the first end of a portion of the hinge rods (61) is at a second height and hinged to the second limiting shaft (63). The two ends of the first sliding shaft (64) are slidably engaged with the lower sliding rail (4), and the two ends of the second sliding shaft (65) are slidably engaged with the upper sliding rail (3); in the at least two scissor lift structures, the second end of a portion of the hinge rods (61) is at a first height and hinged to the first sliding shaft (64), and the second end of a portion of the hinge rods (61) is at a second height and hinged to the second sliding shaft (65). The output end of the push-pull assembly (7) is connected to the sliding shaft one (64) so ​​that the sliding shaft one (64) can be driven to slide back and forth along the lower slide rail (4), while the sliding shaft two (65) slides back and forth along the upper slide rail (3).

4. The material lifting fixture according to claim 3, characterized in that, The push-pull assembly (7) includes a drive cylinder (71), a piston rod (72), and a connecting seat (73). The drive cylinder (71) is fixed to the fixed frame (1), one end of the piston rod (72) is telescopically connected to the inside of the drive cylinder (71), the connecting seat (73) is fixed to the other end of the piston rod (72), and the sliding shaft (64) is fixedly connected to the connecting seat (73).

5. The material lifting fixture according to claim 3, characterized in that, At each end of the sliding shaft one (64) and the sliding shaft two (65), a sliding wheel (66) is respectively fitted to contact the surface of the corresponding slide rail.

6. The material lifting fixture according to claim 3, characterized in that, Two fixing seats (5) are fixed on the lower surface of the upper slide rail (3) and the upper surface of the lower slide rail (4). The fixing seats (5) are provided with mounting holes. The two ends of the first limiting shaft (62) and the two ends of the second limiting shaft (63) are respectively rotatably installed in the mounting holes of the corresponding fixing seats (5).

7. The material lifting fixture according to claim 3, characterized in that, The number of upper slide rails (3) and the number of lower slide rails (4) are the same as the number of scissor lift structures and both extend along the Y direction. The multiple upper slide rails (3) and the multiple lower slide rails (4) are distributed at intervals along the X direction. The multiple upper slide rails (3) and the multiple lower slide rails (4) are arranged one above the other along the Z direction.

8. The material lifting fixture according to claim 1, characterized in that, In each of the aforementioned articulated rod assemblies: The two hinge rods (61) are hinged together by a hinge shaft (67); bearing seats (611) are fixed on the opposite side of the two hinge rods (61) at their intersections, and the two ends of the hinge shaft (67) after passing through the hinge holes provided on the two hinge rods (61) are rotatably installed inside the corresponding bearing seats (611).

9. The material lifting fixture according to claim 1, characterized in that, The bottom of the fixed frame (1) is fixedly connected to a base plate (11). The lower slide rail (4) is fixed to the base plate (11); and / or, the upper surface of the base plate (11) is fixed with a mounting base (8), and the push-pull assembly (7) is mounted on the mounting base (8).

10. An electric vehicle production system, characterized in that, The material lifting fixture includes any one of claims 1 to 9.

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