Bearing seat dismounting tool

Abstract

The utility model relates to the technical field of dismounting tools, in particular to a bearing seat dismounting tool. Comprising a lantern ring, lug plates are symmetrically fixed to the two sides of the lantern ring, long holes are formed in the lug plates, puller bolts are inserted into the long holes, and ejector rods are fixed to the lug plates; the device further comprises a connecting assembly used for stabilizing the two ejector rods, the connecting assembly comprises an inverted-U-shaped connecting frame, inserting grooves are formed in the lower ends of the two vertical portions of the connecting frame, and the two ejector rods penetrate through the two inserting grooves respectively. According to the tool, the ejector rod tightly abuts against the drying cylinder, the contact point of the ejector rod and the drying cylinder is used as an acting point, the puller bolt is in threaded connection with the threaded hole in the bearing seat, after a nut of the puller bolt makes contact with the lug plate, the puller bolt continues to be rotated, and under the blocking effect of the drying cylinder on the lug plate and the ejector rod, the puller bolt is tightly pressed against the drying cylinder. And under the blocking effect of the lug plate on the puller bolt nut, the bearing seat and the bearing can be far away from the drying cylinder in the puller bolt rotating process.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tool technology, specifically to a bearing housing disassembly tool. Background Technology

[0002] Due to the lifespan of the front and rear drying cylinder bearings and the effects of production conditions, some bearings on the paper machine have become damaged. Therefore, maintenance personnel need to replace the bearings during downtime to eliminate potential equipment hazards and ensure stable operation of the paper machine. However, the space between the bearing housing and the support is small, requiring multiple people to use mechanical jacks for disassembly. During disassembly, one end of the jack is pressed tightly against the drying cylinder, and the other end is pressed tightly against the bearing housing. Multiple jacks are used simultaneously to push the bearing housing out. Due to the limited maintenance space, maintenance is difficult, time-consuming, and inefficient.

[0003] Patent document CN212146246U discloses a tool for disassembling the rice outlet bearing seat of a rice milling main shaft, comprising a puller, a rice outlet bearing seat, and a disassembly nut. One end of the rice outlet bearing seat has an external thread, and the disassembly nut has an internal thread, with the internal and external threads engaging. The puller is located at one end of the rice outlet bearing seat and includes a lead screw. A puller nut is movably mounted on the outside of the lead screw, and several connecting rods are hinged to the puller nut. Each connecting rod is hinged to a hook, and the end of the hook has a hook head. The tool has a standard-sized external thread machined at the end of the rice outlet bearing seat, which is then used in conjunction with the disassembly nut as the point of force application. By using the puller to engage the disassembly nut and rotating the lead screw, the rice outlet bearing seat can be disassembled.

[0004] Patent document CN208773465U discloses a disassembly tool for an unconventional bearing housing, including a hydraulic puller. The hydraulic puller has a push rod, which includes a fixed outer sleeve and a telescopic rod. The fixed outer sleeve is fitted over the telescopic rod, which is capable of telescopic movement relative to the fixed outer sleeve. The outer surface of the fixed outer sleeve is provided with external threads. The disassembly tool also includes a support plate, a double-ended bolt, a fastening nut, and a push rod locking ring. The support plate has a central hole at its center, and around the central hole are multiple small through holes of the same diameter, all centered on the center hole. On the circumference, the position of the small through hole corresponds to the position of the sealing end cap fastening screw hole on the unconventional bearing housing; the number of double-ended bolts is the same as the number of small through holes, one end of which passes through the small through hole and is threaded to the fastening nut, and the other end is used to connect to the sealing end cap fastening screw hole on the unconventional bearing housing; the fixing sleeve of the push rod passes through the center hole of the support plate, the inner ring surface of the push rod locking ring is provided with internal thread, the push rod locking ring is threaded to the fixing sleeve, and the push rod locking ring is located between the outer end face of the fixing sleeve and the support plate, and the outer diameter of the push rod locking ring is larger than the diameter of the center hole. By continuously pressing the hydraulic puller, the telescopic rod of the hydraulic puller's push rod moves forward and pushes against the central shaft of the equipment. At this time, the disassembly tool support plate is subjected to the reaction force of the push rod locking ring, and the unconventional bearing housing is disassembled from the equipment through the connection of the double-ended bolts.

[0005] However, since the drying cylinder shaft inside the bearing and bearing housing is a hollow structure, hot air inlet and hot air outlet need to enter and exit through the drying cylinder shaft. Therefore, neither of the above two technical solutions is suitable for disassembling the bearing housing and bearing of the drying cylinder. Utility Model Content

[0006] The main purpose of this utility model is to provide a bearing housing disassembly tool that facilitates the disassembly of bearings and bearing housings on the shaft of a hollow drying cylinder, thereby improving maintenance efficiency.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] A bearing housing disassembly tool includes a collar, with ear plates symmetrically fixed on both sides of the collar. Each ear plate has an elongated hole, into which a tightening bolt is inserted. Each ear plate is also fixed with a push rod.

[0009] It also includes a connecting assembly for stabilizing the two push rods. The connecting assembly includes an inverted U-shaped connecting frame, with slots at the lower ends of the two vertical parts of the connecting frame, through which the two push rods pass.

[0010] Specifically, a pin is detachably and fixedly connected to the connecting frame below the top rod, and the pin stabilizes the top rod in the slot.

[0011] Specifically, the collar is provided with a plurality of lead screws evenly arranged around its circumference. The axis of the lead screws is parallel to the radial direction of the collar. The lead screws are threadedly connected to the collar. One end of the lead screw is located inside the collar, and the other end of the lead screw is located outside the collar.

[0012] Specifically, a ball bearing is concentrically mounted on one end of the lead screw inside the collar.

[0013] Specifically, the push rod is parallel to the tightening bolt.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This tool uses a push rod to press against the drying cylinder, and uses the contact point between the push rod and the drying cylinder as the force point, so that the tightening bolt is threadedly connected to the threaded hole on the bearing seat. After the nut of the tightening bolt contacts the ear plate, continue to rotate the tightening bolt. Under the blocking action of the drying cylinder on the ear plate and the push rod, and under the blocking action of the ear plate on the nut of the tightening bolt, the bearing seat and bearing can be moved away from the drying cylinder during the rotation of the tightening bolt.

[0016] 2. By setting a connecting frame, the connecting frame can stabilize the top rod, prevent the top rod from tilting after being subjected to force, and ensure that the force of the top rod on the drying cylinder is perpendicular to the contact surface between the top rod and the drying cylinder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the disassembly tool.

[0018] Figure 2 This is a top view of the disassembly tool.

[0019] Figure 3 This is a front view of the disassembly tool.

[0020] Figure 4 This diagram illustrates the disassembly of the bearings and bearing housings on the drying cylinder using this disassembly tool.

[0021] The parts in the attached diagram are named as follows: 1. Collar, 2. Lead screw, 3. Ball bearing, 4. Ear plate, 5. Long hole, 6. Tightening bolt, 7. Push rod, 8. Connecting frame, 9. Slot, 10. Pin, 11. Drying cylinder, 12. Drying cylinder shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Refer to Figures 1-4As shown, a bearing housing disassembly tool includes a collar 1, with ear plates 4 symmetrically fixed on both sides of the collar 1. Each ear plate 4 has an elongated hole 5, into which a tightening bolt 6 is inserted. Each ear plate 4 has a push rod 7 fixed. The push rod 7 is parallel to the tightening bolt 6.

[0024] Multiple lead screws 2 are evenly arranged around the circumference of the collar 1. The axis of the lead screw 2 is parallel to the radial direction of the collar 1. The lead screw 2 is threadedly connected to the collar 1. One end of the lead screw 2 is located inside the collar 1, and the other end is located outside the collar 1. A ball bearing 3 is concentrically rotatably mounted on one end of the lead screw 2 inside the collar 1.

[0025] When disassembling the bearing and bearing housing of the drying cylinder 11, the collar 1 is fitted onto the drying cylinder shaft 12. Then, the lead screw 2 is rotated so that the balls 3 on the lead screw 2 contact the outer edge of the drying cylinder shaft 12, and the collar 1 is concentric with the drying cylinder shaft 12. At this time, the push rod 7 is pressed tightly against the drying cylinder 11. Rotate the collar 1, ear plate 4, and push rod 7 so that the elongated hole 5 on the ear plate 4 connects with the threaded hole on the bearing housing. The tightening bolt 6 is threaded through the elongated hole 5 and then threaded into the threaded hole on the bearing housing. Rotate the tightening bolt 6. When the nut of the tightening bolt 6 contacts the ear plate 4, continue to rotate the tightening bolt 6. Under the blocking action of the drying cylinder 11 on the ear plate 4 and the push rod 7, and under the blocking action of the ear plate 4 on the nut of the tightening bolt 6, the bearing housing and bearing are moved away from the drying cylinder 11 during the rotation of the tightening bolt 6.

[0026] Example 2: Based on Example 1, referring to... Figures 1-4 As shown, a bearing housing disassembly tool further includes a connecting assembly for stabilizing the two push rods 7. The connecting assembly includes an inverted U-shaped connecting frame 8, with slots 9 at the lower ends of the two vertical parts of the connecting frame 8, and the two push rods 7 passing through the two slots 9 respectively.

[0027] A pin 10 is detachably and fixedly connected to the connecting frame 8 below the top rod 7, and the pin 10 stabilizes the top rod 7 in the slot 9.

[0028] By setting up the connecting frame 8 and the pin 10, the cooperation between the connecting frame 8 and the pin 10 can stabilize the top rod 7, prevent the top rod 7 from tilting after being subjected to force, and ensure that the force of the top rod 7 on the drying cylinder 11 is perpendicular to the contact surface between the top rod 7 and the drying cylinder.

[0029] The connecting frame 8 can move flexibly in the axial direction of the push rod 7, and the connecting frame 8 is easy to assemble and disassemble with the push rod 7, which can improve the disassembly and assembly efficiency of this disassembly tool.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bearing chock dismounting tool comprising a collar (1) to which ear plates (4) are symmetrically fixed on both sides, characterized in that, Long holes (5) are formed on the ear plates (4), and top bolts (6) are inserted into the long holes (5); the ear plates (4) are fixed with top rods (7); further comprising a connecting assembly for stabilizing the two top rods (7), the connecting assembly comprises a reverse U-shaped connecting frame (8), and the lower ends of the two vertical parts of the connecting frame (8) are provided with insertion slots (9), and the two top rods (7) respectively penetrate the two insertion slots (9).

2. A bearing seat dismounting tool according to claim 1, characterized in that A pin rod (10) is detachably fixedly connected to the connecting frame (8) below the top rod (7), and the pin rod (10) stabilizes the top rod (7) in the insertion slot (9).

3. The bearing seat dismounting tool according to claim 1, characterized in that A plurality of lead screws (2) are uniformly arranged on the circumference of the sleeve ring (1), the axis of the lead screw (2) is parallel to the radial direction of the sleeve ring (1), the lead screw (2) is in threaded connection with the sleeve ring (1), one end of the lead screw (2) is located inside the sleeve ring (1), and the other end of the lead screw (2) is located outside the sleeve ring (1).

4. A bearing seat dismounting tool according to claim 3, characterized in that The sleeve ring (1) is internally provided with a plurality of lead screws (2), and the lead screws (2) are arranged in parallel.

5. The bearing seat dismounting tool according to claim 1, characterized in that The top rod (7) is parallel to the top bolt (6).

Images