High-precision heavy-duty surface rail compound matching lifting device

Abstract

The invention discloses a high-precision heavy-load surface rail composite matching lifting device, comprising an outer box and a lifting body. The outer box includes a front box plate, a rear box plate, a left box plate, a right box plate and a top cover that are fixedly connected together. The front box plate, the rear box plate, the left box plate and the right box plate form a rectangular enclosure, and the top cover plate and the front box plate, the rear box plate, the left box plate and the right box plate are vertically fixed on the top surface , the lifting body includes an inner box body and a top drive device, the front high-precision convex surface is in contact with the vertical direction surface of the front end surface of the inner box body, and the left and right sides of the inner box body pass through the left slider slide rail and The right slider slide rail is slidingly connected with the left box plate and the right box plate, the driving device is fixed on the top surface of the top cover plate, and the top driving device is connected with the inner box through a screw rod to control the inner box Move vertically. The slider slide rail of the present invention is combined with the surface fit of the inner box body and the front and rear inner end faces of the outer box, that is, the surface rail compound fit, which is suitable for complex and multi-sided strong force conditions.

Description

technical field [0001] The invention relates to a high-precision heavy-load surface rail composite matching lifting device. Background technique [0002] The traditional lifting of the inner axle box mainly uses the dovetail groove to connect the fixed box and the movable inner axle box. Using the dovetail slot as the sliding rail to move the box has at least the following disadvantages: [0003] 1. Due to the limited contact surface of the sliding part of the dovetail groove and the heavy load, the lifting axle box will shake during the lifting process, and the tightness is poor, resulting in poor accuracy of the workpiece. [0004] 2. Due to the small contact surface between the dovetail groove and the sliding part of the axle box, the bearing load of the dovetail groove is limited, and the dovetail groove is easily deformed under heavy load, which seriously affects the normal sliding of the axle box. [0005] 3. The wear of the dovetail groove is proportional to the use...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the limited contact surface of the sliding part of the dovetail groove and the heavy load, the lifting shaft box shakes during the lifting process, and the fastening is poor, resulting in poor accuracy of the processed parts

[0004] 2. Due to the small contact surface between the dovetail groove and the sliding part of the axle box, the bearing load of the dovetail groove is limited, and the dovetail groove is easy to cause deformation under heavy load, which seriously affects the normal sliding of the axle box

[0005] 3. The wear of the dovetail groove is directly proportional to the service time, and it is difficult to repair the dovetail groove after wear

After wear and tear, the gap between the sliding surfaces increases, making it difficult to ensure accurate lifting and fixing of the cabinet

[0006] 4. It is difficult to realize the multi-faceted cooperation of the inner and outer axle boxes with a single dovetail groove structure

[0007] 5. The process of using dovetail groove is complicated, and the quality requirements of debugging personnel are high (grinding or scraping is difficult)

This patent simply uses sliders to be installed on slide rails for sliding connection, which has poor impact resistance and is not suitable for complex multi-faceted stress situations.

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