Coal feeder coupling wheel pin replacement device

Abstract

A kind of coal feeder coupling wheel pin replacement device.Currently, the pin of coupling is replaced by using hammer to knock the pin through the tongs, so that the pin slowly exits, and the coupling is easily damaged during the knocking process. It takes 1-4 hours to complete the replacement normally, and the efficiency is very low. The utility model comprises a support frame, both sides of the support frame are provided with symmetrical through holes, a limiting ring is fixed at each through hole, the limiting ring and the sleeve ring are connected through a bearing, a pinion is fixed outside the sleeve ring, a nut sleeve is fixed inside the sleeve ring, and the nut sleeve is threadedly connected with a lead screw; both sides of the support frame are fixed with a fixed outer frame, a driving device is fixed on the fixed outer frame, and the main bevel gear of the driving device is engaged with the corresponding side pinion. The utility model is used for replacing the wheel pin of coal feeder coupling.

Description

Technical Field

[0001] This utility model relates to a device for replacing the pins of a coal feeder coupling. Background Technology

[0002] The coal feeder's motor provides power, which is then connected to a reducer via a coupling. The reducer further transmits the power to the feeder's drive shaft via the coupling. The drive shaft drives the feeder chain, thus transporting coal powder. However, during operation, the coal feeder and batching unit may experience jamming due to large coal chunks or foreign objects entering the feeder and batching unit housings. This obstructs the power transmission through the coupling, concentrating the force on the coupling pins, leading to pin damage and breakage. Currently, replacing the coupling pins involves using a hammer and a pin to tap the pins, causing them to slowly retract. This tapping process easily damages the coupling, and a normal replacement takes 1-4 hours, resulting in extremely low efficiency and a risk of equipment damage. This maintenance requires the combined efforts of three people. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned technical problems and provide a device for replacing the pins of a coal feeder coupling.

[0004] The above objectives are achieved through the following technical solutions: A coal feeder coupling pin replacement device comprises a support frame, on both sides of which are symmetrically arranged through holes. A limit ring is fixed at each through hole. The limit ring is connected to a collar through a bearing. A secondary bevel gear is fixed outside the collar. A nut sleeve is fixed inside the collar. The nut sleeve is threadedly connected to a lead screw. The support frame is fixed with a fixed outer frame on each side, and a driving device is fixed on the fixed outer frame. The main bevel gear of the driving device meshes with the corresponding secondary bevel gear.

[0005] The aforementioned coal feeder coupling pin replacement device includes a ratchet as the driving device. The ratchet shaft is connected to the fixed outer frame via a bearing. A main bevel gear is fixed on the ratchet shaft. The fixed outer frame is connected to the cover shaft via a bearing. A cover is fixed to the end of the cover shaft. A left locking block and a right locking block are connected inside the cover via a locking block shaft. A drive rod is rotatably connected to the cover. A reversing cam is fixed to the end of the drive rod. The reversing cam contacts the left locking block and the right locking block respectively.

[0006] The aforementioned coal feeder coupling pin replacement device has springs connecting the left locking block to the cover and the right locking block to the cover.

[0007] The aforementioned coal feeder coupling pin replacement device connects the two housings via a rotating rod. Beneficial effects

[0008] 1. This utility model clamps the pin onto the coupling and drives the lead screw of the drive device to slowly push the pin off the coupling. This greatly saves manpower and resources, shortens working time, improves work efficiency, reduces on-site maintenance risks, and allows the equipment to be put into operation more quickly.

[0009] 2. This utility model can replace two pins at the same time, which can reduce the time for pin replacement and improve the efficiency of replacement. Attached Figure Description

[0010] Appendix Figure 1 This is the front view of this utility model; Appendix Figure 2 This is a left view of the present invention; Appendix Figure 3 This is a rear view of the present invention; Appendix Figure 4 This is a top view of the present invention; Appendix Figure 5 It is attached Figure 1 Sectional view of section AA; Appendix Figure 6 It is attached Figure 2 BB section sectional view; Appendix Figure 7 It is attached Figure 1 A cross-sectional view of the CC section; Appendix Figure 8 It is attached Figure 5 Enlarged view of part D; Appendix Figure 9 It is attached Figure 6 Enlarged view of part E; Appendix Figure 10 This is a front view of the present invention in use; Appendix Figure 11 This is a side view of the present invention in use; In the diagram: 1. Rotating rod; 2. Cover; 3. Directional cam; 4. Left locking block; 5. Spring; 6. Main bevel gear; 7. Right locking block; 8. Lead screw; 10. Clamping bolt; 11. Support frame; 12. Fixed outer frame; 13. Ratchet; 14. Secondary bevel gear; 15. Through hole; 16. Nut sleeve; 17. Collar; 18. Limiting ring; 19. Drive rod; 20. Ratchet shaft; 21. Cover shaft; 22. Pin; 23. Coupling; 24. Slot; 25. Slider; 26. Locking block shaft. Detailed Implementation

[0011] Reference Figures 1-9 A device for replacing the pins of a coal feeder coupling includes a support frame 11, which is an arc frame. Multiple clamping bolts 10 are threadedly connected to the front of the support frame to clamp the device onto the coupling. The support frame has symmetrically arranged through holes 15 on both sides. The through holes are round holes with a diameter larger than that of the pin. A limit ring 18 is fixed at each of the through holes. The limit ring is connected to a collar 17 through a bearing. A secondary bevel gear 14 is fixed outside the collar. A nut sleeve 16 is fixed inside the collar. The nut sleeve is threadedly connected to a lead screw 8. The lead screw has a slot 24 that runs the length of the lead screw. A slider 25 is fixed to the inner wall of the limiting ring. The slider is inserted into the slot to limit the lead screw so that it cannot rotate. The support frame is fixed with a fixed outer frame 12 on both sides. The fixed outer frame is a U-shaped frame. A driving device is fixed on the fixed outer frame. The main bevel gear 6 of the driving device meshes with the corresponding auxiliary bevel gear.

[0012] The drive device includes a ratchet 13, the ratchet shaft 20 of which is connected to the fixed outer frame via a bearing, a main bevel gear 6 fixed on the ratchet shaft, the fixed outer frame connected to the cover shaft 21 via a bearing, a cover 2 fixed to the end of the cover shaft, a left locking block 4 and a right locking block 7 connected inside the cover via a locking block shaft 26, a drive rod 19 rotatably connected to the cover, the drive rod being a screw with a nut threaded onto it, a reversing cam 3 fixed to the end of the drive rod, the reversing cam contacting the left locking block and the right locking block respectively.

[0013] Springs 5 ​​are connected between the left locking block and the cover, and between the right locking block and the cover, respectively.

[0014] The two housings are connected by a rotating rod 1.

[0015] Working principle: When using it, refer to... Figures 10-11 First, fasten the device onto coupling 23. The support frame of the device is an arc frame, so that it fits snugly onto the coupling. Tighten the multiple clamping bolts to clamp the device onto the coupling. The cover shaft and the ratchet shaft are concentric, and the threads of the lead screws at the two through holes are opposite in direction, so that the two lead screws can move synchronously and in the same direction after being driven. First, adjust the position between the left and right locking blocks. Rotate the drive rod to rotate the directional cam. The right locking block engages into the groove of the ratchet, and the left locking block separates from the ratchet. Refer to... Figure 5 and Figure 7As shown, hold the lever and rotate it clockwise to make the cover rotate. The right locking block will push the ratchet to rotate. The ratchet rotates clockwise, and the main bevel gear and the secondary bevel gear on the ratchet mesh, causing the nut sleeve to rotate. The nut sleeve is threadedly connected to the lead screw, causing the lead screw to push towards the coupling side. The lever needs to reciprocate. Rotate the lever counterclockwise back to its original position. The right locking block is connected to the cover by a spring, so that the right locking block can rotate when the cover rotates. After rotating to the position, it will re-lock into the ratchet groove. Then rotate the lever clockwise, repeating this motion until the lead screw pushes towards the coupling side, pressing against the pin until it is ejected. After ejection, rotate the drive lever to rotate the cam, causing the right locking block to separate from the ratchet groove and the left locking block to engage with the ratchet groove. Then rotate the lever in the opposite direction to gradually move the lead screw back to its original position. Then rotate the support frame to align the lead screw with a pin in another position. Repeat the above steps to eject pins in other positions to replace the pins.

Claims

1. A device for replacing the pins of a coal feeder coupling, characterized in that: Its components include a support frame, with symmetrically arranged through holes on both sides of the support frame. A limit ring is fixed at each of the through holes. The limit ring and the collar are connected by a bearing. A secondary bevel gear is fixed outside the collar, and a nut sleeve is fixed inside the collar. The nut sleeve is threadedly connected to the lead screw. The support frame is fixed with a fixed outer frame on each side, and a driving device is fixed on the fixed outer frame. The main bevel gear of the driving device meshes with the corresponding secondary bevel gear.

2. The coal feeder coupling wheel pin replacement device according to claim 1, characterized in that: The drive device includes a ratchet, the ratchet shaft of which is connected to the fixed outer frame via a bearing. A main bevel gear is fixed on the ratchet shaft. The fixed outer frame is connected to the cover shaft via a bearing. A cover is fixed to the end of the cover shaft. A left locking block and a right locking block are connected inside the cover via a locking block shaft. A drive rod is rotatably connected to the cover. A reversing cam is fixed to the end of the drive rod. The reversing cam contacts the left locking block and the right locking block respectively.

3. The coal feeder coupling pin replacement device according to claim 2, characterized in that: Springs are connected between the left locking block and the cover, and between the right locking block and the cover, respectively.

4. A coal feeder coupling wheel pin replacement device according to claim 3, characterized in that: The two housings are connected by a rotating rod.

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