Protective high efficiency bushing extractor

Abstract

The utility model relates to the technical field of shaft sleeve, and disclose a kind of protective high -efficient type shaft sleeve extraction device.The device is by being equipped with in the shaft sleeve outside of the shaft sleeve to be disassembled, then the recess of shaft sleeve is realized fixed by using lock bolt fitting, simultaneously by adjusting the length of lock bolt protruding, the recess of the shaft sleeve of different size is adapted, again by cooling liquid circulation through convection and radiation cooling, reduce the interference fit tightness of shaft sleeve and shaft body, reduce disassembly external force and component damage, simultaneously, the side connecting screw rod of fixed ring is articulated connection chain through connecting sheet, jack is fixed in bottom plate by installation groove and supported by L-shaped baffle, then chain is locked by nut after passing through bottom plate, make its length adapt jack height and shaft sleeve and jack distance, so jack thrust is transmitted to fixed ring through bottom plate and chain, drive shaft sleeve axial disengagement, avoid stress deviation, ensure firm and safe.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, and in particular to a protective and efficient bushing removal device. Background Technology

[0002] In the shaft systems of rotating equipment in thermal power plants, such as pumps, fans, and motors, the bushings and shafts often become tightly interlocked due to long-term corrosion, high-temperature deformation, and solidified oil stains. Therefore, during maintenance, it is common to encounter situations where the bushings and shafts cannot be easily disassembled. Especially due to the limited installation space, bushings are often removed destructively, damaging both the bushing and the shaft.

[0003] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: Existing disassembly tools, such as pullers, have a fixed clamping range and a single point of force application. They cannot be adapted to different sizes of bushings and are difficult to place stably in confined spaces, resulting in low disassembly efficiency. At the same time, bushings need to be replaced, which affects maintenance efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantages of low efficiency and easy damage to the bushing when disassembling the bushing and the shaft. To this end, we propose a bushing disassembly tool that improves maintenance efficiency while ensuring the integrity of the equipment.

[0005] To achieve the above objectives, this application adopts the following technical solution: a protective and efficient bushing removal device, comprising: a fixing ring, and a connecting screw fixedly installed on the outer surface of the fixing ring. A locking bolt is threadedly connected to the outer surface of the fixing ring, one end of which is fitted into a groove on the outer surface of the bushing. A cooling pipe is provided on the outer surface of the fixing ring, one end of which is connected to an external coolant tank via a hose. A connecting chain is hinged to one end of the connecting screw via a connecting piece. A base plate is fitted onto the outer surface of the connecting chain. A chain fixing nut is provided between the connecting chain and the base plate. An installation groove is provided on one side of the base plate. A jack is fixedly installed on the base plate by bolts. The installation groove fits into the jack base. An L-shaped baffle is welded to one side of the base plate, and the L-shaped baffle is located below the jack.

[0006] Preferably, the retaining ring is a component made of stainless steel.

[0007] Preferably, the inner wall of the fixing ring is glued with an anti-slip rubber pad, and the contact surface of the anti-slip rubber pad is evenly provided with rubber protrusions.

[0008] Preferably, there are four sets of locking bolts, and each set of locking bolts has a spring washer fitted on its outer surface.

[0009] Preferably, a double handle is welded to one side of the base plate.

[0010] Preferably, the L-shaped baffle has internal reinforcing ribs.

[0011] Preferably, the outer surface of the L-shaped baffle is detachably provided with a folded edge, and the upper surface of the L-shaped baffle and the folded edge is provided with a cushioning pad.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] In this invention, the device secures the bushing by placing a fixing ring around it and then using a locking bolt to engage with the bushing's groove. The extension length of the locking bolt is adjusted to fit different bushing sizes. Coolant circulation, through convection and radiation, reduces the interference fit between the bushing and the shaft, minimizing disassembly force and component damage. Simultaneously, a connecting screw on one side of the fixing ring is hinged to a chain via a connecting plate. The jack is fixed to the base plate via a mounting groove and supported by an L-shaped baffle. The connecting chain passes through the base plate and is locked with a nut, ensuring its length matches the jack height and the distance between the bushing and the jack. Therefore, the jack's thrust is transmitted through the base plate and chain to the fixing ring, causing the bushing to axially disengage, preventing force deviation and ensuring stability and safety. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0015] Figure 1 This is a top view of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the overall structure of the present invention. Figure 1 ;

[0017] Figure 3 This is a side view of the overall structure of the present invention. Figure 2 ;

[0018] Figure 4 This is a bottom view of the overall structure of this utility model.

[0019] Legend: 1. Fixing ring; 11. Anti-slip rubber pad; 12. Rubber protrusion; 13. Cooling pipe; 2. Locking bolt; 21. Spring washer; 3. Connecting screw; 4. Connecting chain; 5. Base plate; 51. Mounting groove; 52. Double handle; 6. Chain fixing nut; 7. Connecting piece; 8. Jack; 9. L-shaped baffle; 91. Folded edge; 92. Buffer pad. Detailed Implementation

[0020] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0021] Reference Figure 1 and Figure 2 As shown, this utility model provides a technical solution: a protective and efficient bushing removal device, comprising: a fixing ring 1, and a connecting screw 3 fixedly installed on the outer surface of the fixing ring 1. A locking bolt 2 is threadedly connected to the outer surface of the fixing ring 1. One end of the locking bolt 2 is fitted into a groove on the outer surface of the bushing. A cooling pipe 13 is provided on the outer surface of the fixing ring 1. One end of the cooling pipe 13 is connected to an external coolant tank through a hose. A connecting chain 4 is hinged to one end of the connecting screw 3 through a connecting piece 7. A base plate 5 is fitted on the outer surface of the connecting chain 4. A chain fixing nut 6 is provided between the connecting chain 4 and the base plate 5. An installation groove 51 is opened on one side of the base plate 5. A jack 8 is fixedly installed on the base plate 5 by bolts. The installation groove 51 is fitted into the base of the jack 8. An L-shaped baffle 9 is welded to one side of the base plate 5. The L-shaped baffle 9 is located below the jack 8.

[0022] Reference Figures 1-4 As shown in this embodiment: the fixing ring 1 is a component made of stainless steel. The stainless steel material extends the service life of the fixing ring 1, adapts to the complex working conditions of thermal power plants, and ensures that the clamping force on the bushing will not fail due to rust or deformation during long-term use.

[0023] The inner wall of the retaining ring 1 is glued with an anti-slip rubber pad 11. The contact surface of the anti-slip rubber pad 11 is evenly provided with rubber protrusions 12. The anti-slip rubber pad 11 can prevent the retaining ring 1 from scratching the outer surface of the bushing. At the same time, the rubber protrusions 12 can prevent the retaining ring 1 from slipping when it contacts the outer surface of the bushing, thereby increasing stability.

[0024] There are four sets of locking bolts 2. Each set of locking bolts 2 has a spring washer 21 on its outer surface. The four sets of locking bolts 2 are symmetrically distributed, which can ensure that the bushing is subjected to uniform force during disassembly. At the same time, the spring washer 21 can enhance the stability of the connection between the fixing ring 1 and the bushing through the locking bolts 2.

[0025] A double handle 52 is welded to one side of the base plate 5, which makes it convenient for operators to move or adjust the position of the base plate 5 through the double handle 52, and facilitates installation.

[0026] The L-shaped baffle 9 has internal reinforcing ribs to enhance its load-bearing capacity, prevent deformation of the baffle due to excessive force from the jack 8, ensure the stability of the force application process, and indirectly protect the shaft from damage by abnormal forces.

[0027] The outer surface of the L-shaped baffle 9 is detachably provided with a folded edge 91. The upper surface of the L-shaped baffle 9 and the folded edge 91 is provided with a buffer pad 92. The L-shaped baffle 9 and the folded edge 91 can increase the contact area with the bottom of the larger jack 8, thereby increasing the safety of use. At the same time, the buffer pad 92 increases the adaptability, not only adapting to different sizes of jack 8, but also absorbing the vibration of the jack 8 during operation, reducing noise and rigid impact.

[0028] Working principle: By placing the retaining ring 1 around the bushing to be disassembled, and then using the locking bolt 2 to engage with the bushing groove, the extension length of the locking bolt 2 can be adjusted to fit the grooves on bushings of different sizes. Therefore, for bushings with size differences within a certain range, the extension and retraction adjustment of the locking bolt 2 can compensate for the fixed size of the retaining ring 1, achieving a stable clamping of different bushings. Furthermore, because the four sets of locking bolts 2 are symmetrically distributed, the bushing is ensured to be subjected to uniform force during disassembly. At the same time, the spring washer 21 can enhance the anti-loosening stability of the connection between the retaining ring 1 and the bushing through the locking bolt 2. In addition, the cooling pipe 13 on the outer surface of the retaining ring 1 is connected to an external coolant tank through a hose. Therefore, the coolant circulates in the cooling pipe 13, thereby reducing the bushing temperature through convection and radiation heat transfer. Since the cooling reduces the interference fit between the bushing and the shaft, the external force required for disassembly can be reduced, thus reducing damage to the components. Then, because the connecting screw 3 on one side of the fixed ring 1 is hinged to the connecting chain 4 through the connecting piece 7, and the jack 8 is fixed to the base plate 5 through the mounting groove 51, the L-shaped baffle 9 supports the bottom of the jack 8, and the connecting chain 4 is passed through the base plate 5 and locked by the chain fixing nut 6. At the same time, the length of the connecting chain 4 is adjusted to match the height of the jack 8, and the connecting chain 4 can also adapt to the different distances between different bushings and the jack 8. Therefore, when an external force is applied, the thrust of the jack 8 is transmitted to the fixed ring 1 through the base plate 5 and the connecting chain 4, causing the bushing to detach axially from the shaft. This not only avoids force displacement during bushing disassembly, but also ensures the stability of the jack 8 and improves operational safety. Furthermore, the L-shaped baffle 9 has internal reinforcing ribs, which enhances its load-bearing capacity, prevents deformation due to excessive force from the jack 8, ensures stability during force application, and indirectly protects the shaft from abnormal force damage. Additionally, the L-shaped baffle 9 has a detachable flange 91 on its outer surface, and a buffer pad 92 on its upper surface. This increases the contact area with the bottom of larger jacks 8, improving safety. The buffer pad 92 also increases adaptability, accommodating jacks 8 of different sizes and absorbing vibrations during operation, reducing noise and impact. During the process, a double handle 52 is welded to one side of the base plate 5, allowing operators to easily move or adjust its position for installation.

[0029] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A protective and efficient bushing removal device, characterized in that: The device includes a retaining ring and a connecting screw fixedly mounted on the outer surface of the retaining ring. A locking bolt is threaded onto the outer surface of the retaining ring, and one end of the locking bolt is fitted into a groove on the outer surface of the bushing. A cooling pipe is provided on the outer surface of the retaining ring, and one end of the cooling pipe is connected to an external coolant tank via a hose. A connecting chain is hinged to one end of the connecting screw via a connecting piece. A base plate is fitted onto the outer surface of the connecting chain, and a chain fixing nut is provided between the connecting chain and the base plate. An installation groove is provided on one side of the base plate, and a jack is fixedly mounted on the base plate by bolts. The installation groove fits into the jack base. An L-shaped baffle is welded to one side of the base plate, and the L-shaped baffle is located below the jack.

2. The protective high-efficiency bushing removal device according to claim 1, characterized in that: The retaining ring is a component made of stainless steel.

3. The protective high-efficiency bushing removal device according to claim 1, characterized in that: The inner wall of the fixing ring is glued with an anti-slip rubber pad, and the contact surface of the anti-slip rubber pad is evenly provided with rubber protrusions.

4. The protective high-efficiency bushing removal device according to claim 1, characterized in that: The locking bolts are provided in four sets, and each set of locking bolts has a spring washer fitted on its outer surface.

5. The protective high-efficiency bushing removal device according to claim 1, characterized in that: A double handle is welded to one side of the base plate.

6. The protective high-efficiency bushing removal device according to claim 1, characterized in that: The L-shaped baffle is equipped with reinforcing ribs inside.

7. The protective high-efficiency bushing removal device according to claim 1, characterized in that: The outer surface of the L-shaped baffle is detachably provided with a folded edge, and the upper surface of the L-shaped baffle and the folded edge is provided with a cushioning pad.

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