A lifting mechanism

Abstract

The utility model discloses a kind of lifting mechanism, comprising: bottom plate, its surface is sequentially fixed with motor, gear reducer, transmission module, the transmission module is provided with movable platform;Transmission module, comprising: first fixed seat and second fixed seat;First swing piece and second swing piece;Connecting rod, the connecting rod is connected with traction member, the traction member is connected with gear reducer by extension piece, with the circumferential motion of extension piece pulling traction member makes first swing piece and second swing piece swing back and forth, drive movable platform lifting is powered for movable platform lifting by motor drive gear reducer, utilize the combination of first swing piece, second swing piece, connecting rod and traction member in transmission module, the circumferential motion of gear reducer extension piece is converted into the swing back and forth of first swing piece and second swing piece, and then drive movable platform lifting, reach the purpose of object platform height adjustment, realize the stable, controllable lifting of movable platform.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a lifting mechanism. Background Technology

[0002] In today's era of rapid advancements in manufacturing towards high precision and efficiency, stamping machine tools, as indispensable core equipment in modern industry, have a significant impact on product processing quality and production efficiency. Among them, the worktable, as a key component of the stamping machine tool, bears the important mission of accurately supporting and positioning the workpiece; its positioning accuracy and operational stability directly determine the level of processing precision.

[0003] However, the transmission mechanism of traditional stamping machine tool worktables presents numerous insurmountable challenges when implementing the lifting function of the movable platform. During the lifting process, lateral swaying frequently occurs due to its structural design and mechanical motion characteristics. This lateral swaying is extremely harmful, causing workpiece displacement during processing, severely affecting the accuracy of machining dimensions, and potentially even triggering abnormal collisions between the mold and the workpiece, resulting in mold damage, workpiece scrap, and consequently increasing production costs and extending the production cycle.

[0004] A thorough analysis of the structural principles of traditional transmission mechanisms reveals that some rely solely on simple linear guides or single swing-element structures to drive the lifting and lowering of a moving platform. While linear guides can guide the platform in linear motion to a certain extent, they struggle to effectively resist lateral forces in complex mechanical environments and high-speed motion scenarios, easily leading to swaying. Furthermore, single swing-element structures lack sufficient mechanical constraints and balancing mechanisms. During the lifting and lowering process, even a slight deviation or uneven force distribution in the swing-element will transmit this instability to the platform, ultimately causing lateral swaying.

[0005] Furthermore, with the increasing number of high-precision positioning scenarios, traditional transmission mechanisms are proving inadequate and unable to meet the application needs of these fields with extremely high precision requirements.

[0006] To address these issues, the industry has been continuously exploring new transmission mechanism designs. Some solutions attempt to reduce lateral sway by adding complex auxiliary devices, but these solutions also have significant negative effects, not only complicating the transmission mechanism structure, increasing manufacturing costs and maintenance difficulty, but also reducing transmission efficiency. Other solutions employ advanced electronic control systems to compensate for errors caused by lateral sway; however, electronic control systems suffer from drawbacks such as response delays and reliability being affected by environmental factors, failing to fundamentally solve the lateral sway problem caused by the mechanical structure itself.

[0007] Against this backdrop, developing a lifting mechanism that can effectively solve the problem of lateral swaying in traditional transmission mechanisms, improve positioning accuracy, and has a reasonable structure is of great practical significance. Summary of the Invention

[0008] In order to overcome the shortcomings of existing technical solutions, this utility model provides a lifting mechanism that can effectively solve the problem of lateral swaying in traditional transmission mechanisms mentioned in the background art.

[0009] The technical solution adopted by this utility model to solve its technical problem is: a lifting mechanism, comprising: The base plate has a motor, a gear reducer connected to the rotating end of the motor, and a transmission module fixed on its surface in sequence. The top of the transmission module is provided with a movable platform. The transmission module includes: A first fixing seat fixed to the lower surface of the movable platform and a second fixing seat fixed to the upper surface of the base plate; The first and second swing components are movably connected between the first fixed base and the second fixed base; A connecting rod is provided at the movable connection point between the first swing member and the second swing member. The connecting rod is connected to a traction member. The traction member is connected to the gear reducer through an extension member provided in the gear reducer. As the extension member of the gear reducer moves in a circular motion, the traction member pulls the first swing member and the second swing member back and forth, driving the movable platform to rise and fall.

[0010] Furthermore, the traction component is a rigid connecting rod.

[0011] Furthermore, the first swing member and the second swing member form a V-shaped structure through a hinge point.

[0012] Furthermore, at least one movable rod is provided on the inner side of the transmission module. The top end of the movable rod is connected to the lower surface of the movable platform, and the bottom end is connected to the upper surface of the base plate, forming a guide structure parallel to the extension and retraction direction of the transmission module.

[0013] Furthermore, the movable rod is a piston rod.

[0014] Furthermore, the transmission module has two pairs of first and second swing components, with a connecting rod connecting the first and second swing components on the same side.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: By using a motor-driven gear reducer, the high-speed rotation of the motor is converted into a power form suitable for the operation of the transmission module, providing power for the lifting and lowering of the movable platform. Specifically, by utilizing the ingenious combination of the first swing component, the second swing component, the connecting rod, and the traction component in the transmission module, the circular motion of the gear reducer extension is transformed into the back-and-forth swinging of the first and second swing components, thereby driving the lifting and lowering of the movable platform. This achieves the purpose of adjusting the height of the platform on which the object is located, realizing the stable and controllable lifting and lowering of the movable platform. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is a three-dimensional view of the transmission module structure of this utility model; Figure 3 This is a perspective view of the structure of the present invention, which eliminates the motor and gear reducer. Figure 4 This is another perspective of the structural three-dimensional view of this utility model.

[0017] Numbering on the map: 1-Base plate, 2-Motor, 3-Gear reducer, 4-Moving rod, 5-Moving platform, 6-First fixed seat, 7-Second fixed seat, 8-First swinging component, 9-Second swinging component, 10-Connecting rod, 11-First traction component, 12-Extension component, 13-Connecting rod. Detailed Implementation

[0018] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0019] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0020] like Figure 1-4 As shown, this utility model provides a lifting mechanism, including: The base plate 1 has a motor 2, a gear reducer 3 connected to the rotating end of the motor 2, and a transmission module fixed on its surface in sequence. The top of the transmission module is provided with a movable platform 5. The transmission module includes: The first fixing seat 6 is fixed to the lower surface of the movable platform 5 and the second fixing seat 7 is fixed to the upper surface of the base plate 1; The first swing member 8 and the second swing member 9 are movably connected between the first fixed base 6 and the second fixed base 7; A connecting rod 10 is provided at the movable connection point between the first swing member 8 and the second swing member 9. The connecting rod 10 is connected to a traction member. The traction member is connected to the gear reducer 3 through an extension member 12 provided on the gear reducer 3. As the extension member 12 of the gear reducer 3 moves in a circular motion, the traction member is pulled, causing the first swing member 8 and the second swing member 9 to swing back and forth, driving the movable platform 5 to rise and fall.

[0021] The first fixed seat 6 is fixed to the lower surface of the movable platform 5, and the second fixed seat 7 is fixed to the upper surface of the base plate 1, providing a precise installation position and stable support for the double swing components. This ensures that the relative positional relationship of the double swing components remains unchanged during the movement, reduces lateral swaying caused by displacement during the movement, and makes the lifting and lowering movement of the movable platform 5 more stable.

[0022] A traction member is connected to the connecting rod 10 at the movable connection point between the first swing member 8 and the second swing member 9. The traction member is connected to the gear reducer 3 via an extension 12. This allows the power from the gear reducer 3 to be precisely transmitted to the two swing members through the traction member and the connecting rod 10. When the extension 12 of the gear reducer 3 makes a circular motion, the traction member pulls the connecting rod 10, causing the first swing member 8 and the second swing member 9 to swing back and forth. The pulling direction and force of the traction member are precisely designed and controlled to ensure a more stable motion trajectory for the two swing members, reducing lateral forces caused by uneven power transmission and effectively preventing lateral swaying.

[0023] The power output from motor 2 is reduced in speed and increased in torque by gear reducer 3, and then smoothly transmitted to the transmission module through extension member 12 and traction member. The use of gear reducer 3 not only improves the efficiency of power transmission, but also ensures the stability of power transmission. Stable power transmission makes the movement of the double swinging member more regular, reduces lateral swaying caused by power fluctuations, and improves the accuracy and stability of the lifting of the movable platform 5.

[0024] The traction component is a rigid connecting rod 13, which has high strength and rigidity. When transmitting the power generated by the extension 12 of the gear reducer 3, it can minimize the loss and deformation of power during transmission.

[0025] The first swing member 8 and the second swing member 9 form a V-shaped structure through a hinge point, which provides better mechanical support and stability during the lifting and lowering of the movable platform 5. When the movable platform 5 is subjected to a lateral force, the two swing members of the V-shaped structure will restrain each other and jointly resist the lateral force, effectively reducing the lateral sway of the movable platform 5 and thus improving the positioning accuracy.

[0026] The transmission module has at least one movable rod 4 on its inner side. The top end of the movable rod 4 is connected to the lower surface of the movable platform 5, and the bottom end is connected to the upper surface of the base plate 1, forming a guide structure parallel to the extension and retraction direction of the transmission module. This guide structure restricts the movement trajectory of the movable platform 5, ensuring it can only move in a straight line parallel to the extension and retraction direction of the transmission module. In working scenarios such as stamping machines, the movable platform 5 needs to be precisely raised and lowered to a designated position for processing operations. This guide structure prevents the movable platform 5 from shifting or tilting during raising and lowering, ensuring that each raising and lowering operation accurately reaches the preset coordinate position, thereby improving processing accuracy and quality.

[0027] The movable rod 4 is a piston rod. During use, the piston rod forms a shock absorption system to absorb the impact at the end of the lifting process and protect the motor 2 and the gear reducer 3.

[0028] See Figure 1 The transmission module consists of two pairs of first swing members 8 and second swing members 9, with a connecting rod 13 connecting the first swing members 8 and second swing members 9 on the same side.

[0029] The two pairs of first swing members 8 and second swing members 9 are connected by a connecting rod 13, forming a relatively closed and stable mechanical frame structure. This structure can effectively distribute and withstand various external forces experienced by the movable platform 5 during lifting and lowering. Compared with the structure of a single pair of swing members, it greatly improves the deformation resistance of the entire transmission module, reduces structural swaying and deformation caused by external forces, and thus ensures the smoothness of the lifting and lowering of the movable platform 5.

[0030] In a traditional single-pair swing component structure, a failure or damage to a critical component can lead to the failure of the entire transmission mechanism. However, with a design using two pairs of swing components connected by link 13, even if a problem occurs in one pair of swing components or a part of link 13, the other pair of swing components and link 13 can still continue to bear a certain load and transmission function. This reduces the impact of a single-point failure on the entire lifting mechanism and improves the reliability and safety of the system.

[0031] In this embodiment, the high-speed rotation of the motor 2 is converted into a power form suitable for the operation of the transmission module by the motor 2 driving the gear reducer 3, thus providing power for the lifting and lowering of the movable platform 5. Specifically, the ingenious combination of the first swing member 8, the second swing member 9, the connecting rod 10, and the traction member in the transmission module transforms the circular motion of the extension 12 of the gear reducer 3 into the back-and-forth swinging of the first swing member 8 and the second swing member 9, thereby driving the lifting and lowering of the movable platform 5. This achieves the purpose of adjusting the height of the platform on which the object is located, realizing the stable and controllable lifting and lowering of the movable platform 5.

[0032] In the description of this utility model, it should be understood that the terms "middle", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0033] In this invention, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first feature, or indirect contact with the first feature through an intermediate medium. "A plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. A lifting mechanism, characterized in that, include: The base plate has a motor, a gear reducer connected to the rotating end of the motor, and a transmission module fixed on its surface in sequence. The top of the transmission module is provided with a movable platform. The transmission module includes: A first fixing seat fixed to the lower surface of the movable platform and a second fixing seat fixed to the upper surface of the base plate; The first and second swing components are movably connected between the first fixed base and the second fixed base; A connecting rod is provided at the movable connection point between the first swing member and the second swing member. The connecting rod is connected to a traction member. The traction member is connected to the gear reducer through an extension member provided in the gear reducer. As the extension member of the gear reducer moves in a circular motion, the traction member pulls the first swing member and the second swing member back and forth, driving the movable platform to rise and fall.

2. The lifting mechanism according to claim 1, characterized in that: The traction component is a rigid connecting rod.

3. The lifting mechanism according to claim 1, characterized in that: The first swing member and the second swing member form a V-shaped structure through the hinge point.

4. A lifting mechanism according to claim 1, characterized in that: The transmission module has at least one movable rod on its inner side. The top end of the movable rod is connected to the lower surface of the movable platform, and the bottom end is connected to the upper surface of the base plate, forming a guide structure parallel to the extension and retraction direction of the transmission module.

5. A lifting mechanism according to claim 4, characterized in that: The movable rod is a piston rod.

6. A lifting mechanism according to any one of claims 1-5, characterized in that: The transmission module consists of two pairs of first and second swing components, with a connecting rod connecting the first and second swing components on the same side.

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