Tool for adjusting axial clearance of internal mixer rotor

Abstract

The utility model relates to an axial clearance adjusting tool for a rotor of an internal mixer, and belongs to the field of tools for vulcanizing machinery. The device is provided with a rack, the rack is of a barrel cover type structure with the cross section being an equilateral triangle, and a first rack fixing bolt, a second rack fixing bolt and a third rack fixing bolt are installed at the three corners of the opening end of the rack through lug plate threads in a matched mode respectively. A first rotor thrust bearing compression ring compression bolt, a first rotor thrust bearing shaft compression bolt, a first rotor adjusting bolt and a second rotor adjusting bolt are respectively mounted on the center line of a first corner of the bottom surface of the rack from outside to inside in a screw-thread fit manner; a second rotor thrust bearing compression ring compression bolt and a second rotor thrust bearing shaft compression bolt are respectively mounted on the center line of a second corner of the bottom surface of the rack from outside to inside in a screw-thread fit manner; and a third rotor thrust bearing compression ring compression bolt and a third rotor thrust bearing shaft compression bolt are respectively mounted on the center line of the third corner of the bottom surface of the rack from outside to inside in a threaded fit manner.

Description

Technical Field

[0001] The utility model relates to the field of tools for vulcanization machinery, and more specifically to an axial clearance adjustment tool for a mixer rotor. Background Art

[0002] As is well known, when installing a mixer rotor after disassembly and overhaul, it is necessary to measure the axial clearance of the mixer rotor and adjust it to a reasonable clearance range to ensure that the mixer rotor rotates and operates within an appropriate interval position.

[0003] The current method for adjusting the axial clearance of a mixer rotor is as follows: First, measure the clearance at the back of the rotor. It is necessary to use a pipe wrench to manually tighten the large nut of the thrust bearing at the shaft end of the rotor one by one until it is in place. Then, calculate the clearance between the rotor and the matching components based on the measured data before and after pulling the rotor. Next, remove the large nut of the thrust bearing, add appropriate adjusting pads at the rear of the thrust bearing or the shaft part of the bearing sleeve, and then tighten the large nut again to pull the rotor into place. Then, measure the clearance at the front of the rotor. It is necessary to use a thick gland of the rotor thrust bearing plus a spacer block and tighten it with bolts, measure the clearance between the gland and the thrust bearing, then remove the thick gland, add appropriate adjusting pads, and then press the thick gland with bolts to prevent the rotor from moving outwards. This method requires tightening the large nut of the thrust bearing 2 times and installing and tightening the thick gland of the thrust bearing 2 times, and it takes about 4 hours for 3 people to complete. It is not only laborious but also inefficient. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an axial clearance adjustment tool for a mixer rotor, which can measure and calculate the clearance amounts at the back and front of the rotor at one time.

[0005] The technical solution adopted by the utility model to solve its technical problems is: An axial clearance adjustment tool for a mixer rotor is provided with a frame. The frame is a cylindrical cover structure with an equilateral triangle cross-section. At the three corners of the open end of the frame, a first frame fixing bolt, a second frame fixing bolt, and a third frame fixing bolt are respectively installed through ear plates by threaded fit. On the center line of the first corner at the bottom of the frame, a first rotor thrust bearing gland pressing bolt, a first rotor thrust bearing shaft pressing bolt, a first rotor adjustment bolt, and a second rotor adjustment bolt are respectively installed through threaded fit from outside to inside. On the center line of the second corner at the bottom of the frame, a second rotor thrust bearing gland pressing bolt and a second rotor thrust bearing shaft pressing bolt are respectively installed through threaded fit from outside to inside. On the center line of the third corner at the bottom of the frame, a third rotor thrust bearing gland pressing bolt and a third rotor thrust bearing shaft pressing bolt are respectively installed through threaded fit from outside to inside.

[0006] The beneficial effects of the present utility model are as follows: through the adjustment of the bolt group, the back and front clearance amounts of the rotor can be measured and calculated at one time, which can reduce the working hours of the rotor axial clearance adjustment measurement, improve the working efficiency, and reduce the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0008] Figure 1 Structural schematic diagram of the present utility model.

[0009] Figure 2 is Figure 1 A-A cross-sectional view of

[0010] Figure 3 Assembly schematic diagram of the present utility model.

[0011] In the figure: 1. Frame; 2. First rotor adjustment bolt; 3. First rotor thrust bearing shaft pressing bolt; 4. First rotor thrust bearing retaining ring pressing bolt; 5. First frame fixing bolt; 6. Rotor; 7. Rotor thrust bearing; 8. Rotor thrust bearing base; 9. Second rotor thrust bearing shaft pressing bolt; 10. Second rotor thrust bearing retaining ring pressing bolt; 11. Second frame fixing bolt; 12. Second rotor adjustment bolt; 13. Third rotor thrust bearing shaft pressing bolt; 14. Third rotor thrust bearing retaining ring pressing bolt; 15. Third frame fixing bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] In the figure, the present utility model is provided with a frame 1. The frame 1 is a cylindrical cover structure with an equilateral triangle cross-section. At the three corners of the open end of the frame 1, a first frame fixing bolt 5, a second frame fixing bolt 11, and a third frame fixing bolt 15 are respectively installed through ear plates by threaded fit. On the center line of the first corner of the bottom surface of the frame 1, a first rotor thrust bearing retaining ring pressing bolt 4, a first rotor thrust bearing shaft pressing bolt 3, a first rotor adjustment bolt 2, and a second rotor adjustment bolt 12 are respectively installed from outside to inside by threaded fit. On the center line of the second corner of the bottom surface of the frame 1, a second rotor thrust bearing retaining ring pressing bolt 10 and a second rotor thrust bearing shaft pressing bolt 9 are respectively installed from outside to inside by threaded fit. On the center line of the third corner of the bottom surface of the frame 1, a third rotor thrust bearing retaining ring pressing bolt 14 and a third rotor thrust bearing shaft pressing bolt 13 are respectively installed from outside to inside by threaded fit.

[0013] When adjusting the clearance of the rotor 6, the frame 1 is directly fixed on the rotor thrust bearing base 8 through the first frame fixing bolt 5, the second frame fixing bolt 11, and the third frame fixing bolt 15. The rotor is pulled outwards to the rotor thrust bearing base 8 by the first rotor adjusting bolt 2 and the second rotor adjusting bolt 12. The thrust bearing shaft part is pressed by the first rotor thrust bearing shaft pressing bolt 3, the second rotor thrust bearing shaft pressing bolt 9, and the third rotor thrust bearing shaft pressing bolt 13. The rotor thrust bearing collar is pressed by the first rotor thrust bearing collar pressing bolt 4, the second rotor thrust bearing collar pressing bolt 10, and the third rotor thrust bearing collar pressing bolt 14. At this time, through the gap position of the frame 1, the clearance between the back and the front of the rotor can be measured and calculated at one time.

Claims

1. A tool for adjusting the axial clearance of a rotor of an internal mixer, provided with a frame, characterized in that: The frame is a cylinder cover structure with an equilateral triangle cross section. The first frame fixing bolt, the second frame fixing bolt, and the third frame fixing bolt are respectively installed with ear plate threads on the three corners of the open end of the frame. The first rotor thrust bearing pressure ring clamping bolt, the first rotor thrust bearing shaft clamping bolt, the first rotor adjustment bolt, and the second rotor adjustment bolt are respectively installed with threads on the center line of the first angle of the bottom surface of the frame from outside to inside. The second rotor thrust bearing pressure ring clamping bolt and the second rotor thrust bearing shaft clamping bolt are respectively installed with threads on the center line of the second angle of the bottom surface of the frame from outside to inside. The third rotor thrust bearing pressure ring clamping bolt and the third rotor thrust bearing shaft clamping bolt are respectively installed with threads on the center line of the third angle of the bottom surface of the frame from outside to inside.

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