Special sling for planet carrier

Abstract

The utility model relates to a kind of lifting appliance, especially a kind of special lifting appliance suitable for planet carrier, including main rod, its lower end is vertically through the central position of fixed plate and is connected with long plate;Lifting plate is set two, and it is symmetrically slidably arranged on the lower surface of fixed plate, and it is uniformly provided with elastic tension unit between the main rod, by the relative movement force of elastic tension unit to lifting plate continuously exerting to the center direction of main rod, the long plate is located between two lifting plates.The utility model can force lifting plate to overcome elastic tension unit and be clamped into planet carrier central hole groove when main rod drives long plate to rotate, so as to realize the hoisting of planet carrier.

Description

Technical Field

[0001] This utility model relates to a lifting device, and more particularly to a special lifting device suitable for planetary carriers. Background Technology

[0002] Planetary carriers, as core load-bearing components in reducers, drive axles of new energy vehicles, and transmission systems of construction machinery, generally feature a central through-hole. Due to variations in the specifications of the equipment they are used with, the diameter of this central hole and their overall weight differ significantly. Lifting operations are an indispensable and crucial process throughout the entire process of planetary carrier processing, assembly, and warehousing and transportation. Because planetary carriers are large and heavy, manual handling is not only labor-intensive but also carries the risk of collision damage to the workpiece or personnel safety. Therefore, specialized lifting equipment is urgently needed to achieve efficient, fast, and safe lifting operations. Utility Model Content

[0003] The present invention aims to solve the above-mentioned defects and provide a special lifting tool suitable for planetary carriers.

[0004] In order to overcome the defects in the background technology, the technical solution adopted by this utility model to solve its technical problem is: a special lifting tool for planetary carriers, including a main rod, the lower end of which vertically penetrates the center of the fixed plate and is connected to the long plate; Two lifting plates are provided and symmetrically slidably disposed on the lower surface of the fixed plate. Each lifting plate is provided with an elastic tension unit between itself and the main rod. The elastic tension unit continuously applies a relative moving force to the lifting plate in the direction of the center of the main rod. The long plate is located between the two lifting plates.

[0005] Further improvements include the elastic tension unit comprising a guide post, a tension spring, and a pin. The pin is mounted on the main rod. One end of the guide post is connected to the upper surface of the corresponding lifting plate, and the other end passes through a pre-set waist-shaped hole on the fixed plate. The length direction of the waist-shaped hole is consistent with the relative movement direction of the lifting plate. One end of the tension spring is connected to the free end of the guide post, and the other end is connected to the pin.

[0006] Further improvements include the wide sides of the long plate being constructed as outwardly convex arc-shaped structures, and the inner sides of the lifting plate being respectively provided with inwardly concave arc-shaped grooves, the curvature of which perfectly matches the curvature of the wide side of the long plate.

[0007] Further improvements include providing roughening layers on the mating surfaces of the long plate and the fixing plate.

[0008] Further improvements include a detachable connection between the lower end of the main rod and the long plate.

[0009] Further improvements include connecting the upper end of the main rod to the lifting ring.

[0010] The beneficial effects of this utility model are as follows: In this design, when the main rod drives the long plate to rotate, it can force the lifting plate to overcome the elastic tension unit and engage with the groove in the center hole of the planetary carrier, thereby realizing the hoisting of the planetary carrier; the arc-shaped wide edge of the long plate and the arc-shaped groove of the lifting plate are precisely matched, which can stably limit the lifting plate and prevent the planetary carrier from falling off during hoisting; the main rod and the long plate are detachable, and long plates of different lengths can be replaced according to the diameter of the center hole of the planetary carrier, which can adapt to various specifications of planetary carriers without the need for separate hoisting equipment, thus reducing equipment costs; the contact surface between the long plate and the fixed plate is provided with a rough layer to prevent the long plate from rotating accidentally. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is the front view of this utility model; Figure 2 This is a bottom view of the present invention; In the diagram, 1-fixed plate, 2-elastic tension unit, 3-lifting ring, 4-main rod, 5-lifting plate, 6-long plate, 201-tension spring, 202-pin, 203-guide post. Detailed Implementation

[0013] 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. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] refer to Figure 1 and Figure 2 A special lifting tool for planetary carriers includes a main rod 4, the lower end of which vertically passes through the center of the fixed plate 1 and is connected to the long plate 6; Two lifting plates 5 are provided and are symmetrically slidably disposed on the lower surface of the fixed plate 1. Each lifting plate 5 and the main rod 4 are provided with an elastic tension unit 2. The elastic tension unit 2 continuously applies a relative moving force to the lifting plate 5 in the direction of the center of the main rod 4. The long plate 6 is located between the two lifting plates 5, and the two wide sides of the long plate 6 correspond to the inner sidewalls of the two lifting plates 5 respectively.

[0015] When the main rod 4 rotates around its own axis, the main rod 4 synchronously drives the long plate 6 connected to the lower end to rotate coaxially. During the rotation, the wide sides of the long plate 6 will push against the inner walls of the two lifting plates 5, forcing the lifting plates 5 to overcome the tension of the elastic tension unit 2 and move relative to each other in a direction away from the center of the main rod 4, until the outer end of the lifting plate 5 is embedded in the preset groove on the inner wall of the planetary carrier's central hole, realizing the mechanical engagement between the lifting device and the planetary carrier, ensuring that the planetary carrier does not fall off during the lifting process and ensuring the stability of the lifting. When the main rod 4 is rotated in the opposite direction to return to the initial angle, the pushing force of the long plate 6 on the lifting plate 5 disappears, and the tension of the elastic tension unit 2 will drive the two lifting plates 5 to return to the center of the main rod 4 and slide back, reducing the distance between the two lifting plates 5, making it easier to smoothly extend the lifting plates 5 out of the central hole of the planetary carrier, preparing for the next lifting. This design is not limited to planetary carriers, but can also be used for lifting gear rings and other similar components.

[0016] In a specific embodiment, the elastic tension unit 2 includes a guide post 203, a tension spring 201, and a pin 202. The pin 202 is mounted on the main rod 4. One end of the guide post 203 is connected to the upper surface of the corresponding lifting plate 5, and the other end passes through a pre-set waist-shaped hole on the fixing plate 1. The length direction of the waist-shaped hole is consistent with the relative movement direction of the lifting plate 5, and the guide post 203 can slide freely along the axial direction of the waist-shaped hole. This waist-shaped hole is used to precisely limit the movement trajectory of the guide post 203 and prevent the lifting plate 5 from shifting laterally when sliding. One end of the tension spring 201 is connected to the free end of the guide post 203, and the other end is connected to the pin 202. The contraction tension of the tension spring 201 in its natural state will continuously act on the guide post 203, causing the guide post 203 to move along the waist-shaped hole towards the main rod 4, thereby simultaneously pulling the two lifting plates 5 towards the center, ensuring that the lifting plates 5 maintain a retracted posture when not in operation.

[0017] In a specific embodiment, the wide sides of the long plate 6 are all constructed into outwardly convex arc-shaped structures, and the inner sides of the lifting plates 5 are respectively provided with inwardly concave arc-shaped grooves. The curvature of the arc-shaped grooves is completely matched with the curvature of the arc-shaped structure of the wide side of the long plate 6, forming a fitting locking structure. When the long plate 6 rotates with the main rod 4 to the preset position, the arc-shaped structures on both sides of the long plate 6 will be precisely embedded in the arc-shaped grooves on the inner side of the lifting plate 5. Mechanical limiting is achieved through the tight fit of the arc-shaped surfaces: on the one hand, it can stably maintain the position of the long plate 6 between the two lifting plates 5; on the other hand, through the locking action of the arc-shaped structure and the arc-shaped grooves, it can effectively limit the relative movement of the lifting plates 5 towards the center under the action of the elastic tension unit 2, ensuring that the lifting plates 5 are in a stable and reliable state for hoisting the planetary carrier.

[0018] Meanwhile, the matching design of the arc structure and the arc groove can play a natural guiding role during the rotation of the long plate 6, reduce the mechanical resistance during engagement, and make the arc structure of the wide side of the long plate 6 fit into the arc groove of the lifting plate 5 more smoothly and accurately, thus improving the ease of operation.

[0019] In a specific embodiment, a rough layer is provided on the contact surface of the long plate 6 and the fixed plate 1. This design increases the friction coefficient of the contact surface of the long plate 6 and the fixed plate 1, thereby improving the static friction between the two. When the long plate 6 rotates with the main rod 4 to the working position, the friction of the rough layer can effectively limit the long plate 6 from rotating unexpectedly, and prevent the long plate 6 from slipping or shifting due to vibration and shaking during the hoisting process.

[0020] In a specific embodiment, the lower end of the main rod 4 is detachably connected to the long plate 6, for example, by bolt fastening. The core function of this design is that it allows for convenient replacement of long plates 6 of different lengths according to the diameter of the center hole of the planetary carrier to be hoisted. When the length of the long plate 6 increases, its rotation can push the lifting plate 5 to open outward to a greater extent, which can accommodate planetary carriers with larger inner hole diameters. When the length of the long plate 6 decreases, the opening range of the lifting plate 5 decreases accordingly, which is suitable for planetary carriers with smaller inner hole diameters. This detachable structure significantly improves the versatility and adaptability of the lifting equipment, eliminating the need to equip different specifications of planetary carriers with separate lifting equipment, reducing equipment investment costs, simplifying replacement operations, and improving the flexibility of hoisting operations.

[0021] In a specific embodiment, the upper end of the main rod 4 is connected to the lifting ring 3. The lifting ring 3 facilitates the precise hooking of the crane's hook, achieving a stable connection between the lifting device and the crane, thereby completing the lifting operation of the planetary carrier, reducing the labor intensity of manual handling, and saving labor costs.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A special lifting tool for planetary carriers, characterized in that, Including the main rod (4), whose lower end vertically passes through the center of the fixing plate (1) and then connects to the long plate (6); Two lifting plates (5) are provided and are symmetrically slidably disposed on the lower surface of the fixed plate (1). Each of them is provided with an elastic tension unit (2) between it and the main rod (4). The elastic tension unit (2) continuously applies a relative moving force to the lifting plate (5) in the direction of the center of the main rod (4). The long plate (6) is located between the two lifting plates (5).

2. The special lifting tool for planetary carriers as described in claim 1, characterized in that: The elastic tension unit (2) includes a guide post (203), a tension spring (201), and a pin (202). The pin (202) is mounted on the main rod (4). One end of the guide post (203) is connected to the upper surface of the corresponding lifting plate (5), and the other end passes through a pre-set waist-shaped hole on the fixing plate (1). The length direction of the waist-shaped hole is consistent with the relative movement direction of the lifting plate (5). One end of the tension spring (201) is connected to the free end of the guide post (203), and the other end is connected to the pin (202).

3. A special lifting tool for planetary carriers as described in claim 1, characterized in that: The wide sides of the long plate (6) are all constructed into an outwardly convex arc-shaped structure, and the inner sides of the lifting plate (5) are respectively provided with inwardly concave arc-shaped grooves, and the curvature of the arc-shaped grooves is completely matched with the curvature of the arc-shaped structure of the wide side of the long plate (6).

4. A special lifting tool for planetary carriers as described in claim 1, characterized in that: A rough layer is provided on the mating surface of the long plate (6) and the fixed plate (1).

5. A special lifting tool for planetary carriers as described in claim 1, characterized in that: The lower end of the main rod (4) is detachably connected to the long plate (6).

6. A special lifting tool for planetary carriers as described in claim 1, characterized in that: The upper end of the main rod (4) is connected to the lifting ring (3).

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