Automatic tensioning mechanism of mill relining trolley

Abstract

The utility model discloses a mill lining plate replacement trolley automatic tensioning mechanism, specifically relates to the field of dressing mill lining plate replacement manipulator, is used for solving the skidding problem of conveying lining plate trolley in the walking process, thereby increasing the stability of lining plate trolley work. Mill lining plate replacement trolley automatic tensioning mechanism is composed of the following parts: limit ring, screw rod, spring, nut. Through the matched use with motor + driving wheel, two tensioning wheels, fixed pulley, steel rope, the work of back and forth stable conveying lining plate on the girder is completed.

Description

Technical Field

[0001] This utility model relates to the field of liner replacement robot for mineral processing mills, and more specifically, to a tensioning device mechanism for preventing the wire rope of the liner transport trolley from slipping during operation. Background Technology

[0002] The mill liner changing trolley is an important component of the mineral processing mill robotic arm equipment. It moves back and forth on the main beam to transport the mill liners in and out.

[0003] The original structure's motion principle involved a hydraulic motor driving a drive wheel to rotate. The friction between the drive wheel and the wire rope propelled the wire rope, which moved along a fixed trajectory via a fixed pulley and a tensioning wheel. During this movement, the wire rope moved a trolley, which was driven back and forth by the forward and reverse rotation of the motor, thus achieving the function of transporting the mill liner and completing the installation and removal of the liner.

[0004] This type of tensioning mechanism is not only complex in structure and cumbersome to install, but also has a fatal flaw: the steel cable frequently slips after running for a period of time. The original structure used a U-shaped basket tensioning method, where one end of the steel cable was secured to the fixed limit block of the trolley, and the other end passed through a fixed pulley, tensioning wheel, drive wheel, connecting slider, tensioner, adjusting limit plate, and locked to the trolley with a nut. During operation, because the steel cable is constantly under tension, it is forced to stretch, reducing friction with the drive wheel and causing slippage, leading to trolley stalling and affecting normal operation. Each time this happens, workers must tighten the basket and then adjust the nut to restore operation. This is cumbersome, time-consuming, reduces work efficiency, and can even cause accidents due to sudden trolley stalling. Utility Model Content

[0005] To overcome the shortcomings of existing technology and solve the slippage problem, this utility model adopts an automatic spring tensioning mechanism to solve the slippage problem of the wire rope during operation, thus ensuring the normal operation of the trolley.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic spring tensioning mechanism, comprising improving the original anti-tipping side plate by welding two limiting rings (1). A screw (2) is riveted to both ends of a wire rope, the screw (2) passes through the limiting rings, and two springs (3) are fitted inside. One end of the spring is pressed against the inside of the positioning ring, and the outer end is locked with an adjusting nut (4). The friction force is automatically adjusted by the elastic force stored in the springs on both sides to ensure the normal operation of the trolley. Attached Figure Description

[0007] Figure 1 Improved working principle diagram

[0008] The attached diagram is labeled as follows: (1) limiting ring, (2) screw, (3) spring, and (4) adjusting nut. Detailed Implementation

[0009] like Figure 1 As shown, during initial installation, the spring (3) is pressed tightly to ensure sufficient friction between the steel rope and the drive wheel. After running for a period of time, when the steel rope is stretched, the spring (3) automatically extends to compensate for the stretching of the steel rope, so that the friction between the steel rope and the drive wheel remains unchanged, avoiding slippage and ensuring the normal operation of the trolley.

[0010] Only after a long period of operation, when the elongation of the steel rope exceeds the compression of the spring (3), is it necessary to tighten the end adjusting nut (4) to compress the spring again so that it can continue to be used (this working condition rarely occurs).

[0011] This new tensioning mechanism has been applied to multiple robotic arms. Actual operation has verified the feasibility of this solution, which can completely solve the problem of wire rope slippage. It has high reliability and performance and is very suitable for the transportation of mill liners in mining.

[0012] Final Note

[0013] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, or improvements made within the principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic tensioning mechanism for a mill liner changing trolley, using a coaxial spring tensioning mechanism, characterized in that, include: Two limiting rings (1), two screws (2), two springs (3), and four adjusting nuts (4); the automatic tensioning mechanism of the mill liner changing trolley is characterized in that: the limiting rings (1) are welded to both ends of the left wing plate of the trolley; the screws (2) are riveted to both ends of the wire rope; the springs are mounted on the screws, with one end close to the inner side of the limiting ring and the outer end locked with nuts, and the center line of the spring is coaxial with the center line of the wire rope.

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