Electric shovel walking bearing bush dismounting tool and using method

Abstract

The invention belongs to the technical field of WK-4 vertical electric shovels, and particularly relates to an electric shovel walking bearing bush dismounting tool and a using method, which is characterized by comprising an inner cross beam, an outer cross beam, two slideways for connecting the two cross beams, a hollow screw propulsion rod arranged between the two slideways, and a connecting rod mechanism at the top end of the hollow screw propulsion rod, the handle is arranged at the tail end of the connecting rod mechanism; the two hooks are connected with the two sides of the connecting rod mechanism; the two groups of sliding blocks are respectively arranged on the two slideways; the lifting frame is fixedly connected with the two groups of sliding blocks; the electric shovel walking bearing bush disassembling and cutting tool and the using method are convenient to use, safe and reliable, the potential safety hazards such as scalding and spittle when electric welding and cornea cutting are used are effectively avoided, damage to a bearing bush frame is reduced, the labor intensity is lowered, the maintenance time is shortened, personnel safety is ensured, the service life of equipment parts is prolonged, and the working efficiency is improved. The production cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of WK-4 vertical electric shovels, and in particular relates to a tool for removing a running bearing of an electric shovel and a method for using the tool. Background Art

[0002] WK-4 electric shovels are widely used in large-scale mining production. The electric shovel travel shaft uses sliding bearings, which require frequent inspection and replacement of bearing bushes. Because the bearing bushes are subjected to long-term rolling during use, the inner edge flange of the bearing bushes will be partially deformed. Figure 1 , and cannot be disassembled and assembled normally. Generally, electric welding, corneal cutting and other tools are used for cutting. The splashes or copper scraps generated by cutting enter the internal part of the machine and contaminate the grease, causing abnormal wear and even damage to the bearing mounting frame, which requires frequent treatment and repair of the bearing mounting frame. The labor intensity of maintenance workers is increased, and the maintenance time is long; at the same time, there are safety issues such as burns. Therefore, it is very important to solve the problem of difficulty in replacing the electric shovel's running bearing. Summary of the invention

[0003] The purpose of the present invention is to provide an electric shovel running bearing disassembly tool and a use method to solve the problem of difficulty in replacing the electric shovel running bearing, extend the service life of parts, reduce spare parts consumption, reduce the labor intensity of maintenance workers, reduce maintenance time, ensure personnel safety, and improve work efficiency.

[0004] The objective of the present invention is achieved through the following technical solutions: The present invention provides an electric shovel running bearing removal tool, which is characterized by comprising an inner crossbeam, an outer crossbeam, two slideways connecting the two crossbeams, a hollow spiral push rod arranged between the two slideways, a connecting rod mechanism arranged at the top end of the hollow spiral push rod, a handle arranged at the end of the connecting rod mechanism and connected through the hollow spiral push rod, a hand crank connected to the tail end of the hollow spiral push rod, two hooks connected to both sides of the connecting rod mechanism, two groups of sliders respectively arranged on the two slideways, a lifting frame fixedly connected to the two groups of sliders, a rotating mechanism arranged on the lifting frame, a chuck and a milling cutter driven by the rotating mechanism, a threaded hole being provided on the lifting frame, and the hollow spiral push rod being threadedly connected to the threaded hole.

[0005] The chuck and the milling cutter are used to adjust the feeding depth through a knob.

[0006] The outer cross beam is provided with a locking bolt.

[0007] A method for using the electric shovel running bearing removal tool as described in claim 1, characterized in that it includes: sending the fixing frame as a whole into the inner side of the bearing, pulling the handle at the end of the connecting rod mechanism, two hooks extending to both sides, hanging on the inner side of the bearing seat, tightening the locking bolts of the outer cross beam to fix the fixing frame, using the knob to adjust the feed depth of the milling cutter to the appropriate position, starting the rotating mechanism to rotate the milling cutter, turning the hand crank to slowly push the rotating mechanism, moving the milling cutter up and down along the slide to cut the bearing, cutting the first groove of the bearing, then turning the fixing frame to loosen it, adjusting the direction of the milling cutter to repeat the cutting action, cutting a groove, meeting the requirements of using a flat shovel to remove the bearing, after removal, replacing a new bearing, and completing.

[0008] Advantages of the present invention: The present invention provides an easy-to-use, safe and reliable electric shovel running bearing disassembly and cutting tool and a method for using the tool, which effectively solves the safety hazards such as burns and splashing when using electric welding and corneal machine cutting, reduces bearing frame damage, reduces labor intensity, reduces maintenance time, ensures personnel safety, extends the service life of equipment parts, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the local deformation of the inner edge flange of the bearing shell.

[0010] Figure 2 It is a structural schematic diagram of the present invention.

[0011] Figure 3 For the present invention Figure 2 Top view of the . DETAILED DESCRIPTION

[0012] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0013] like Figure 1 , 2 As shown in and 3, the electric shovel running bearing removal tool of the present invention is characterized in that it includes an inner crossbeam 2, an outer crossbeam 2-1, two slideways 5 connecting the two crossbeams, a hollow screw propeller 7 arranged between the two slideways 5, a connecting rod mechanism 3 arranged at the top of the hollow screw propeller 7, a handle 8 arranged at the end of the connecting rod mechanism 3 and connected through the hollow screw propeller, a hand crank 9 connected to the tail end of the hollow screw propeller 7, two hooks 4 connected to both sides of the connecting rod mechanism 3, two groups of sliders 6 respectively arranged on the two slideways 5, a lifting frame fixedly connected to the two groups of sliders 6, a rotating mechanism 11 arranged on the lifting frame, a chuck 16 and a milling cutter 15 driven by the rotating mechanism 11, and a threaded hole 13 is provided on the lifting frame, and the hollow screw propeller 7 is threadedly connected to the threaded hole 13.

[0014] The chuck 16 and the milling cutter 15 are used to adjust the feeding depth via the knob 12 .

[0015] The outer cross beam 2 - 1 is provided with a locking bolt 10 .

[0016] A method for using the electric shovel running bearing removal tool as described in claim 1, characterized in that it includes: sending the fixing frame as a whole into the inner side of the bearing 14, pulling the handle 8 at the end of the connecting rod mechanism 3, the two hooks 4 extend to both sides and hang on the inner side of the bearing seat 17, tightening the locking bolts 10 of the outer beam 2-1 to fix the fixing frame, using the knob 12 to adjust the feed depth of the milling cutter 15 to a suitable position, starting the rotating mechanism 11 to rotate the milling cutter 15, turning the hand crank 9 to slowly push the rotating mechanism 11, moving the milling cutter 15 up and down along the slide to cut the bearing 14, slotting the bearing 14 to cut the first slot, then turning the fixing frame to loosen it, adjusting the direction of the milling cutter 15 to repeat the cutting action, cutting 2-3 slots, meeting the requirement of using a flat shovel to remove the bearing 14, after unloading, replacing a new bearing, and completing. Example

[0017] 1. Make a fixed frame. Use thick-walled steel square tubes to make inner crossbeam 2 and outer crossbeam 2-1. The length of inner crossbeam 2 is less than the inner diameter of bearing bush 14. The length of outer crossbeam 2-1 extends to the bush seat 17. Use round steel chrome-plated slideway 5 to connect and fix inner crossbeam 2 and outer crossbeam 2-1. Figure 2 .

[0018] 2. Use seamless thick-walled steel pipe to make hollow spiral propulsion rod 7 and install it between two slideways 5. Use forged hook 4 to connect and install with connecting rod mechanism 3. Connect the handle 8 with pull ring through the intersection of connecting rod mechanism 3 at the top of hollow spiral propulsion rod 7. Pull the handle 8 to adjust the width of hook 4 and hang it on the inner wall of bearing seat 17. Figure 2 .

[0019] 3. Install and fix the rotating mechanism 11 and the two sets of sliders 6, install the hollow spiral propulsion rod 7 through the threaded hole 13, install the hand crank 9, and rotate the hand crank 9 to push the lifting frame up and down.

[0020] 4. Adjust the feed depth of the chuck 16 by using the knob 12 on the lifting frame, and install the milling cutter 15 on the chuck 16.

[0021] Instructions for use: send the entire fixing frame into the inner side of the bearing 14, pull the handle 8 at the end of the hollow spiral push rod 7, the two hooks 4 extend to both sides and hang on the inner side of the bearing seat 17, tighten the locking bolt 10 of the outer beam 2-1 to fix the fixing frame, use the knob 12 to adjust the feed depth of the milling cutter 15 to the appropriate position, start the rotating mechanism 11 to rotate the milling cutter 15, turn the hand crank 9 to slowly push the rotating mechanism 11, move the milling cutter 15 up and down along the slide to cut the bearing 14, groove the bearing 14 to cut the first groove, then turn the fixing frame to loosen it, adjust the direction of the milling cutter 15 to repeat the cutting action, cut 2-3 grooves, and meet the requirements of using a flat shovel to remove the bearing 14. After unloading, replace it with a new bearing and it is done.

[0022] The tool has a simple structure, is easy to operate, saves maintenance work time, and is safe and reliable.

Claims

1. A tool for removing the running bearing of an electric shovel, characterized in that It includes an inner crossbeam, an outer crossbeam, two slideways connecting the two crossbeams, a hollow spiral propulsion rod arranged between the two slideways, a connecting rod mechanism arranged at the top end of the hollow spiral propulsion rod, a handle arranged at the end of the connecting rod mechanism and connected through the hollow spiral propulsion rod, a hand crank connected to the tail end of the hollow spiral propulsion rod, two hooks connected to both sides of the connecting rod mechanism, two groups of sliders respectively arranged on the two slideways, a lifting frame fixedly connected to the two groups of sliders, a rotating mechanism arranged on the lifting frame, a chuck and a milling cutter driven by the rotating mechanism, a threaded hole is provided on the lifting frame, and the hollow spiral propulsion rod is threadedly connected to the threaded hole.

2. The electric shovel running bearing removal tool according to claim 1 is characterized in that The chuck and the milling cutter are used to adjust the feeding depth through a knob.

3. The electric shovel running bearing removal tool according to claim 1 is characterized in that The outer cross beam is provided with a locking bolt.

4. A method for using the electric shovel running bearing removal tool according to claim 1, characterized in that: include: Send the entire fixing frame into the inner side of the bearing, pull the handle at the end of the connecting rod mechanism, and the two hooks extend to both sides and hang on the inner side of the bearing seat. Tighten the locking bolts of the outer beam to fix the fixing frame, use the knob to adjust the feed depth of the milling cutter to the appropriate position, start the rotating mechanism to rotate the milling cutter, turn the hand crank handle to slowly push the rotating mechanism, move the milling cutter up and down along the slide to cut the bearing, cut the first groove of the bearing, then turn the fixing frame to loosen it, adjust the direction of the milling cutter and repeat the cutting action to cut a groove to meet the requirements of using a flat shovel to remove the bearing. After removal, replace the new bearing and it is done.

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