Double-chain lifting appliance for horizontally lifting axle central shell

Abstract

A double-chain lifting appliance for horizontally lifting a central shell of an axle belongs to the field of mechanical lifting equipment and comprises chains, a support frame assembly and a lifting frame assembly, the hanging bracket assembly is installed on the supporting frame assembly, and the two identical chains are fixedly connected to the lower ends of two side plates on the two sides of the supporting frame assembly respectively. The supporting frame assembly comprises a side plate, a rack plate and a guide shaft. The left side plate and the right side plate are fixedly connected through the rack plate and the guide shaft to form a frame structure. The hanging bracket assembly comprises a gear, a movable shaft, a handle, a hanging bracket, a hanging ring, a nut, a pin shaft and a gasket; a lifting ring is installed on the top of the lifting frame, a handle is installed on the lower middle portion of the lifting frame and connected with a movable shaft, and a gear is sleeved on the movable shaft and meshed with a rack on a rack plate. The lifting appliance is compact in structure and convenient to operate, can ensure that the axle central shell is horizontally lifted and placed, improves the clamping accuracy and stability of a machining center clamp, and further improves the machining precision and the production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical lifting equipment, and relates to a lifting tool, particularly a double-chain lifting tool for horizontal lifting of the central shell of a vehicle axle. Background Technology

[0002] As the name suggests, horizontal lifting equipment is used to keep the lifted goods horizontal during the lifting process, and it is essential in various goods lifting situations. The stable lifting and horizontal placement of goods are crucial factors in ensuring work safety and efficiency. For example, on large machinery assembly lines such as automobile, agricultural, and construction machinery assembly lines, horizontal lifting equipment is used to accurately lift large components such as engines and chassis to designated locations for installation; in large logistics warehouses and freight yards, parallel lifting equipment is used to lift large goods to avoid tilting, swaying, slipping, collisions, and other unsafe accidents, reducing damage to the goods.

[0003] Currently, most lifting devices in the technology are hook-type. Many companies develop specialized lifting devices specifically for their products and the objects they frequently process.

[0004] A utility model patent authorized by the State Intellectual Property Office on October 25, 2024, with application number 2024222662919 and publication number CN221894521U, and application date of September 18, 2024, discloses "a self-locking lifting device suitable for processing the central housing of a vehicle axle," comprising: a chain assembly and a hook assembly; two identical chains in the chain assembly are connected at one end to a lifting ring and at the other end to hooks respectively; two hook bodies on the hook assembly are located on both sides of a bracket, and a rotating shaft connects the two hook bodies to both sides of the bracket through through holes provided on the bracket. A lifting shaft passes through both ends of the shaft holes on the hook bodies and connects to the two hook bodies respectively. A rotating shaft passes through the shaft hole on the hook body for mounting the rotating shaft and through holes on the bracket and connects to the two hook bodies respectively, and a rotating shaft sleeve is sleeved on the rotating shaft. A pad with internal centering and external alignment is fixed to the outer edge of the bracket. This self-locking lifting device is already in practical production. To better meet the need for convenient horizontal lifting and attachment, and considering the structural characteristics of the axle central shell, a more compact and convenient double-chain lifting device suitable for horizontal lifting of the axle central shell has been designed and tested. Utility Model Content

[0005] To accelerate the improvement of existing technologies, it is essential to provide a compact, convenient, double-chain lifting device suitable for horizontal lifting of the central housing of axles. This device is more compact and easier to connect than existing technologies, ensuring safe and reliable horizontal lifting and guaranteeing its horizontal placement on the machining center fixture, thereby improving machining accuracy and production efficiency.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: A double-chain lifting device for horizontal lifting of the central housing of a vehicle axle, comprising: a chain, a support frame assembly, and a hanger assembly; characterized in that: the hanger assembly is installed on the support frame assembly, and two identical chains are respectively fixed to the lower ends of two side plates on both sides of the support frame assembly; the support frame assembly comprises: side plates, a rack plate, and a guide shaft; the left and right side plates are fixedly connected by the rack plate and the guide shaft to form a frame structure; the hanger assembly comprises: a gear, a moving shaft, a handle, a hanger, a lifting ring, a nut, a pin, and a washer; a lifting ring is installed at the top of the hanger, and a handle is installed slightly below the middle of the hanger, the handle is connected to the moving shaft, a gear is fitted on the moving shaft, and the gear meshes with the rack on the rack plate.

[0007] The rack plate in the support frame assembly is located above the guide shaft, which passes through the guide hole at the bottom of the hanger assembly, allowing the hanger assembly to move along the guide shaft within the guide hole.

[0008] The hanger assembly is provided with a pin hole for installation with a pin shaft, which is installed by a nut and a washer.

[0009] The moving shaft is connected to a gear via a flat key, and a handle is fixed to the outer end of the moving shaft.

[0010] The hanger is fixed on both sides by a mounting shaft and a retaining spring, and the movable shaft can rotate under the action of the handle.

[0011] The beneficial effects achieved by adopting the above technical solution are as follows: The lifting device provided by this utility model, through the meshing transmission of gears and racks and the sliding guidance of the guide shaft on the lifting frame, can flexibly adjust the center of gravity of the lifting device according to the center of gravity position of different axle central housings, effectively solving the problem of workpiece tilting during lifting with existing general-purpose lifting devices. This lifting device has a compact structure and is easy to operate, ensuring the horizontal lifting and placement of the axle central housing, improving the accuracy and stability of machining center fixture clamping, thereby enhancing machining precision and production efficiency, and possessing significant practicality and promotional value. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of a double-chain lifting device for horizontal lifting of the central shell of a vehicle axle according to the present invention;

[0013] Figure 2 This is a rear view schematic diagram of a double-chain lifting device for horizontal lifting of the central shell of a vehicle axle according to the present invention.

[0014] Figure 3 This is a three-dimensional structural diagram of a double-chain lifting device for horizontal lifting of the central shell of a vehicle axle, according to the present invention.

[0015] In the diagram: 1-Chain, 2-Side plate, 3-Gear, 4-Driving shaft, 5-Handle, 6-Hanger, 7-Lifting ring, 8-Rack plate, 9-Guide shaft, 10. Nut, 11. Pin, 12. Washer, 13. Support frame assembly, 14. Hanger assembly. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1-3 As shown, a double-chain lifting device for horizontal lifting of the central housing of a vehicle axle includes: a support frame assembly A, a hanger assembly B; a chain 1, a side plate 2, a gear 3, a moving shaft 4, a handle 5, a hanger 6, a lifting ring 7, a rack plate 8, a guide shaft 9, a nut 10, a pin 11, a washer 12, a support frame assembly 13, and a hanger assembly 14.

[0017] The hanger assembly 14 is installed on the support frame assembly 13, and two identical chains 1 are respectively fixed to the lower ends of the side plates 2 on both sides of the support frame assembly 13. The hooks below the chains 1 are used to hook the two ends of the workpiece. In the support frame assembly 13, the two side plates 2 on the left and right sides are fixedly connected by the rack plate 8 and the guide shaft 9 to form a frame structure. The hanger assembly includes: gear 3, moving shaft 4, handle 5, hanger 6, lifting ring 7, nut 10, pin 11, and washer 12. The top of the hanger 6 is equipped with a lifting ring 7 for hooking with the crane hook. The handle 5 is installed slightly below the middle of the hanger 6. The handle 5 is connected to the moving shaft 4. The gear 3 is mounted on the moving shaft 4. The two sides of the hanger 6 are fixed by the mounting shaft with snap rings, and the handle 5 is fixed to one side of the moving shaft 4. The handle 5 provides a force application point for the operator, and the movement is transmitted by shaking the handle 5. The moving shaft 4 can rotate under the action of the handle 5, and the gear 3 meshes with the rack on the rack plate 8.

[0018] In the support frame assembly 13, the rack plate 8 is located above the guide shaft 9. The guide shaft 9 passes through the guide hole at the bottom of the hanger assembly 14, allowing the hanger assembly 14 to move left and right along the guide shaft 9 within the guide hole. The hanger assembly 14 is provided with a pin hole for mounting with a pin 11. The pin 11 is mounted with a nut 10 and a washer 12, used for connecting and fixing the various components, ensuring the stability of the lifting device structure.

[0019] Working Principle: Before lifting the workpiece, the operator manually cranks handle 5 based on the workpiece's center of gravity. This utilizes the transmission chain consisting of handle 5, moving shaft 4, and gear 3 to cause gear 3 to mesh linearly along guide shaft 9 on rack plate 8, thus precisely moving the lifting frame 6 to a position corresponding to the workpiece's center of gravity. Next, the lifting ring 7 on the lifting frame 6 is attached to the crane hook, and the hooks at the lower ends of the two chains 1 are respectively hooked onto the two edges of the workpiece. Finally, the crane remote control is used to raise the lifting device. Since the lifting device's center of gravity has been adjusted to correspond to the workpiece's center of gravity, the workpiece will be lifted in an approximately horizontal state and can be conveniently and stably placed onto the fixture in the machining center for clamping and processing.

[0020] This invention utilizes the meshing transmission of gears and racks, along with the sliding guidance of the guide shaft on the lifting frame, to flexibly adjust the center of gravity of the lifting device according to the center of mass position of different axle central housings. This effectively solves the problem of workpiece tilting during lifting with existing general-purpose lifting devices. The lifting device has a compact structure and is easy to operate, ensuring horizontal lifting and placement of the axle central housing. This improves the accuracy and stability of machining center fixture clamping, thereby enhancing machining precision and production efficiency, and has significant practical value and potential for widespread application.

[0021] This invention is widely applicable to overhead crane operations in machining workshops. It is suitable for horizontal hoisting of workpieces, including the central housing of a vehicle axle, as well as workpieces similar to the central housing of a vehicle axle.

[0022] In practical applications, this utility model is not limited to the situation described in this example. All technical solutions and improvements that do not depart from the substantive content of this utility model should fall within the scope of the claims of this utility model.

Claims

1. A double-chain lifting device for horizontally lifting the central housing of a vehicle axle, comprising: Chain (1), support frame assembly (13), hanger assembly (14); characterized in that: the hanger assembly (14) is installed on the support frame assembly (13), and two identical chains (1) are respectively fixed to the lower ends of the two side plates (2) on both sides of the support frame assembly (13); the support frame assembly (13) includes: side plate (2), rack plate (8), guide shaft (9); the left and right side plates (2) are fixedly connected by rack plate (8) and guide shaft (9) to form a frame structure; the hanger assembly (14) includes: gear (3), moving shaft (4), handle (5), hanger (6), lifting ring (7), nut (10), pin (11), washer (12); the top of the hanger (6) is equipped with a lifting ring (7), and the lower part of the middle of the hanger (6) is equipped with a handle (5), the handle (5) is connected to the moving shaft (4), the moving shaft (4) is fitted with a gear (3), and the gear (3) meshes with the rack on the rack plate (8).

2. The double-chain lifting device for horizontal lifting of the central housing of a vehicle axle according to claim 1, characterized in that: The rack plate (8) in the support frame assembly (13) is located above the guide shaft (9). The guide shaft (9) passes through the guide hole at the bottom of the hanger assembly (14), and the hanger assembly (14) can move along the guide shaft (9) within the guide hole.

3. A double-chain lifting device for horizontally lifting the central housing of a vehicle axle according to claim 1, characterized in that: The hanger assembly (14) is provided with a pin hole for mounting with a pin (11), and the pin (11) is mounted by a nut (10) and a washer (12).

4. A double-chain lifting device for horizontal lifting of the central housing of a vehicle axle according to claim 1, characterized in that: The moving shaft (4) is connected to the gear (3) via a flat key, and a handle (5) is fixed to the outer end of the moving shaft (4).

5. A double-chain lifting device for horizontal lifting of the central housing of a vehicle axle according to claim 1, characterized in that: The hanger (6) is fixed on both sides by a mounting shaft and a retaining spring, and the movable shaft (4) can rotate under the action of the handle (5).

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