Special tool for disassembling bearing outer ring

Abstract

The invention relates to the technical field of mechanical equipment maintenance, in particular to a special tool for disassembling a bearing outer ring, which comprises a fixed seat, a pin, a screw rod, a sleeve and a nut, the screw rod is installed in the pin hole, the screw rod is arranged in the fixing base in a penetrating mode, the first inclined face is attached to the second inclined face, the fixing base is sleeved with the bearing outer ring, the screw rod is sleeved with the sleeve through the opening and the through hole, the opening end of the sleeve faces the bearing outer ring, the nut is in threaded connection with the screw rod, and the nut is located on one side of the through hole. And the screw rod drives the pin and the fixed seat to move outwards, so that the bearing outer ring is driven to move outwards and enter the sleeve. According to the novel tool special for disassembling the bearing outer ring, the sleeve serves as a support to evenly distribute force on the surface of the wall plate, the nut is rotated, and the screw drives the fixing base to disassemble the bearing outer ring at a constant speed through the pin.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment maintenance, and in particular to a special tool for disassembling a bearing outer ring. Background Art

[0002] The primary function of 6006 deep groove ball bearings is to support rotating mechanical components, reduce friction, and ensure rotational accuracy. They are widely used in various mechanical equipment, including modern smoke exhaust hoods. If bearings lack proper lubrication and experience excessive wear exceeding their stress range, continued use can result in excessive axial loads on the bearings, potentially damaging the cage and causing the bearing's inner and outer rings to fall out.

[0003] The wire-spinning reel and wire-feeding wire of the ZJ17 spooling unit are driven by a single motor (M2), which is controlled separately from the machine's drive unit. Motor M2 transmits motion to a gear via a timing belt, which in turn drives the spinning roller. The spinning roller rotates at a speed of 2800 r / min. The spinning roller assembly requires dynamic balancing testing, achieving a G6.4 accuracy. A gear is mounted on the right end of the rotating shaft, while a 6006 deep groove ball bearing provides support and positioning within the machine. These 6006 deep groove ball bearings are mounted on the rotating shafts of the spinning roller, wire-spinning reel, and other components of the ZJ17 spooling unit's feeding and spooling unit. Their outer rings typically mate with "support sleeves" (sleeve-like structures that position and support the bearing outer rings) on the fixed structure (i.e., the "wall panel") of the machine.

[0004] Because the casting rollers and spring reels come into direct contact with the tobacco, and due to space and process constraints, the bearings cannot be lubricated using open lubrication systems, nor can they be relubricated through grease nipples. Long-term, high-speed operation in a closed environment significantly reduces the service life of sealed, lubricated bearings. This relatively closed environment also hinders routine inspection and maintenance. Bearing wear is difficult to detect, and continued use can result in excessive axial loads on the bearings, causing them to disintegrate. The outer ring of the bearing, due to its long-term fit with the support sleeve (possibly due to an interference fit or a tightening due to wear), will not fall off with the inner ring or rolling elements. Instead, it becomes tightly lodged within the wallboard support sleeve, forming a "chimeric" state.

[0005] Due to the structural limitations of the bearing outer ring, there are no ideal disassembly tools. Using conventional pullers is also limited by factors such as limited space. The tip of the puller screw needs to be inserted into the hole in the wall panel. Since the wall panel is made of cast aluminum, the tip can damage the wall panel, causing irreparable damage to the equipment, making disassembly difficult, time-consuming, and labor-intensive. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the time-consuming and labor-intensive problem of disassembling the bearing outer ring in the prior art, thereby providing a special tool for disassembling the bearing outer ring.

[0007] In order to solve the above technical problems, the present invention provides a special tool for disassembling the outer ring of a bearing, comprising a fixing seat, a pin, a screw, a sleeve and a nut; The fixing seat is annular and fits the outer ring of the bearing. A pin hole is formed in the circumference of the fixing seat. The pin includes a pin head and a pin rod. The pin head is installed in the pin hole. One end of the sleeve is open, and the other end is provided with a through hole. The inner diameter of the sleeve is larger than the outer diameter of the bearing outer ring, and the edge of the opening is covered with a rubber pad. A first inclined surface is provided on one side of the nail head, and second inclined surfaces adapted to the first inclined surface are provided on the inner sides of both ends of the head of the screw; During use, the nail rod is installed in the pin hole, the screw rod is passed through the interior of the fixing seat, the first inclined surface is in contact with the second inclined surface, the fixing seat is sleeved in the outer ring of the bearing, and the sleeve is sleeved outside the screw rod through the opening and the through hole. The open end of the sleeve faces the outer ring of the bearing, and the nut is threadedly connected to the screw rod. The nut is located on one side of the through hole. The nut is rotated so that the nail rod is embedded in the arc groove on the inner wall surface of the outer ring of the bearing. The screw rod drives the pin and the fixing seat to move outward, thereby driving the outer ring of the bearing to move outward and enter the sleeve.

[0008] As an improvement to the above solution, the number of the pins is two, and the number of the pin holes is also two.

[0009] As an improvement of the above solution, the fixing seat is provided with two installation grooves corresponding to the positions of the pin holes, the pin holes are provided at the bottom of the installation grooves, the nail heads are installed in the installation grooves, and the nail rods are inserted into the pin holes.

[0010] As an improvement to the above solution, the outer end of the nail rod is configured to be semi-spherical.

[0011] Compared with the prior art, the above solution has the following advantages or beneficial effects: This invention rationally utilizes the existing structure of the bearing outer ring. Combining a sleeve, a fixing base, a screw, and two pins, it forms a novel tool specifically designed for bearing outer ring removal. The sleeve acts as a support to evenly distribute force across the wallboard surface. Rotating the nut causes the screw to drive the fixing base, via the pins, to remove the bearing outer ring at a uniform speed. This tool is highly practical, simple in structure, and can be used in confined spaces, providing quick and convenient operation and significantly improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a structural schematic diagram of the fixing seat involved in the present invention.

[0014] Figure 2 It is a structural schematic diagram of the pin involved in the present invention.

[0015] Figure 3 It is a structural schematic diagram of the screw involved in the present invention.

[0016] Figure 4 It is a structural schematic diagram of the sleeve involved in the present invention.

[0017] Figure 5 Schematic diagram of the structure of the special tool for disassembling the bearing outer ring provided in an embodiment of the present invention Figure 1 .

[0018] Figure 6 Schematic diagram of the structure of the special tool for disassembling the bearing outer ring provided in an embodiment of the present invention Figure 2 .

[0019] Figure 7 Schematic diagram of the structure of the special tool for disassembling the bearing outer ring provided in an embodiment of the present invention Figure 3 .

[0020] Figure 8 Schematic diagram of the structure of the special tool for disassembling the bearing outer ring provided in an embodiment of the present invention Figure 4 .

[0021] Figure 9 Schematic diagram of the structure of the special tool for disassembling the bearing outer ring provided in an embodiment of the present invention Figure 5 .

[0022] Explanation of the accompanying drawings: 1. fixing seat; 11. mounting groove; 12. pin hole; 2. pin; 21. nail head; 22. nail rod; 23. first inclined surface; 3. screw rod; 31. second inclined surface; 4. sleeve; 41. opening; 42. through hole; 5. nut; 6. bearing outer ring. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] Example 1 See Figure 1-4 This embodiment provides a special tool for disassembling the bearing outer ring 6, including a fixing seat 1, two pins 2, a screw 3, a sleeve 4 and a nut 5.

[0028] The fixing seat 1 is annular and matches the bearing outer ring 6 . Two pin holes 12 are circumferentially provided on the fixing seat 1 . The pin 2 includes a pin head 21 and a pin rod 22 . The outer end of the pin rod 22 is semi-spherical.

[0029] The fixing seat 1 is provided with two mounting grooves 11 in a circumferential direction. A pin hole 12 is provided at the bottom of the mounting groove 11 . The nail head 21 is installed in the mounting groove 11 , and the nail rod 22 is inserted into the pin hole 12 .

[0030] One end of the sleeve 4 is opened 41 , and the other end is provided with a through hole 42 . The inner diameter of the sleeve 4 is larger than the outer diameter of the bearing outer ring 6 , so that the bearing outer ring 6 can move smoothly in the sleeve 4 .

[0031] The edge of the opening 41 is covered with a rubber pad. When the opening abuts against the wall panel, the rubber pad reduces damage to the wall panel.

[0032] A first bevel 23 is provided on one side of the nail head 21, and second bevels 31 are provided on the inner sides of both ends of the head of the screw 3 to match the first bevel 23. In use, the first bevel 23 fits the second bevel 31.

[0033] See Figure 5-9 , during use, the nail rods 22 of the two pins 2 are respectively installed into the pin holes 12, the screw rod 3 is adjusted to an appropriate angle and placed into the fixing seat 1, and then rotated to an appropriate angle so that the first inclined surface 23 is aligned with the second inclined surface 31, and then the fixing seat 1 is sleeved into the bearing outer ring 6 (so that the inclined surface of the pin 2 faces the wallboard), the sleeve 4 is sleeved on the screw rod 3 so that one end of the opening 41 of the sleeve 4 faces the bearing outer ring 6, and the nut 5 is screwed on the screw rod 3. The nut 5 is located on one side of the through hole 42, and the nut 5 is slowly tightened so that one end of the opening 41 of the sleeve 4 abuts against the wallboard, and at the same time, one end of the nail rod 22 is embedded in the arc groove on the inner wall surface of the bearing outer ring 6; the nut 5 is continued to be rotated, and the screw rod 3 drives the pin 2 and the fixing seat 1 to move outward. Since the nail rod 22 of the pin 2 is embedded in the arc groove of the bearing outer ring 6, the bearing outer ring 6 will be slowly pulled out and enter the sleeve 4 until it is completely removed.

[0034] Compared with the prior art in which the top of the pulling screw 3 is against the wall panel, one end of the opening 41 of the sleeve 4 is against the wall panel, which increases the contact area. The sleeve 4 is used as a support to evenly distribute the force on the surface of the wall panel, avoiding damage to the wall panel and causing irreparable damage to the equipment.

[0035] Survey data shows that when 6006 deep groove ball bearings used in the winding and throwing rollers of the winding equipment experience structural damage, removing the outer ring without the dedicated outer ring removal tool takes an average of 50 minutes, which is much longer. Using the dedicated outer ring removal tool, removing the damaged bearing takes an average of 8 minutes. This ratio of bearing removal time demonstrates that repair time is significantly reduced, improving maintenance efficiency.

[0036] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A special tool for disassembling a bearing outer ring (6), characterized in that: It includes a fixing seat (1), a pin (2), a screw (3), a sleeve (4) and a nut (5); The fixing seat (1) is annular and adapted to fit the outer ring (6) of the bearing. The fixing seat (1) is provided with a plurality of pin holes (12) uniformly arranged in the circumference. The pin (2) comprises a pin head (21) and a pin rod (22). The pin head (21) is installed in the pin hole (12). One end of the sleeve (4) is open (41), and the other end is provided with a through hole (42); the inner diameter of the sleeve (4) is larger than the outer diameter of the bearing outer ring (6); and the edge of the opening (41) is covered with a rubber pad; A first inclined surface (23) is provided on one side of the nail head (21), and second inclined surfaces (31) adapted to the first inclined surface (23) are provided on the inner sides of both ends of the head of the screw rod (3); During use, the nail rod (22) is installed in the pin hole (12), the screw rod (3) is inserted into the interior of the fixing seat (1), the first inclined surface (23) is fitted with the second inclined surface (31), the fixing seat (1) is sleeved in the bearing outer ring (6), the sleeve (4) is sleeved outside the screw rod (3) through the opening (41) and the through hole (42), one end of the opening (41) of the sleeve (4) faces the bearing outer ring (6), the nut (5) is threadedly connected to the screw rod (3), the nut (5) is located on one side of the through hole (42), and the nut (5) is rotated so that the nail rod (22) is embedded in the arc groove on the inner wall surface of the bearing outer ring (6), and the screw rod (3) drives the pin (2) and the fixing seat (1) to move outward, thereby driving the bearing outer ring (6) to move outward and enter the sleeve (4).

2. The special tool for disassembling the bearing outer ring (6) according to claim 1 is characterized in that: The number of the pins (2) is two, the number of the pin holes (12) is also two, and one pin (2) is installed in each pin hole (12).

3. The special tool for disassembling the bearing outer ring (6) according to any one of claim 2, characterized in that: The fixing seat (1) is provided with two mounting grooves (11) corresponding to the positions of the pin holes (12), the pin holes (12) are provided at the bottoms of the mounting grooves (11), the nail heads (21) are installed in the mounting grooves (11), and the nail rods (22) are inserted into the pin holes (12).

4. The special tool for disassembling the bearing outer ring (6) according to any one of claim 1, characterized in that: The outer end of the nail rod (22) is configured to be semi-spherical.

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