Turbojet engine bearing extractor

Abstract

The utility model discloses a turbojet engine bearing extractor which comprises a threaded sleeve, supporting rods are fixedly arranged on the two sides of the outer wall of the threaded sleeve, a sliding sleeve is arranged on the outer walls of the supporting rods in a sliding mode, two connecting sleeves are rotatably arranged on the outer wall of the sliding sleeve, and rockers are fixedly arranged on the outer walls of the connecting sleeves. And inserting grooves are formed in the bottoms of the rocking bars, inserting rods are inserted into the two corresponding inserting grooves, and screw rods are in threaded connection with the interiors of the connecting sleeves. The utility model relates to the technical field of aviation, the two adjustable rockers are arranged, the insertion rods are inserted into the bottom ends of the rockers, the bosses in the centers of the insertion rods can be in contact with the inner ring of the bearing, when the screw rod is screwed, the inner ring of the bearing can be pulled out from the outer wall of the shaft rod, and the design mode replaces the mode that an original pull claw abuts against the outer ring. And therefore, the precision of the bearing after being pulled out is ensured.

Description

Technical Field

[0001] This utility model relates to the field of aviation technology, specifically a turbojet engine bearing puller. Background Technology

[0002] Turbojet engines, also known as turbojet engines, are engines that generate thrust by burning fuel to produce high-temperature, high-pressure gas, which drives a turbine. Due to their high precision, they require meticulous assembly and disassembly. Bearings, as connecting components, play a crucial role, and they are often removed using bearing pullers. Bearing pullers, through specific design, can evenly distribute force, preventing localized damage to the bearing and ensuring its safe and undamaged removal during disassembly. Currently, traditional pullers use claws to grip the outer ring of the bearing, pulling the bearing out entirely from the shaft end by tightening a screw. However, because the inner ring of the bearing is connected to the shaft end, pulling the bearing out after the claws press against the outer ring can easily reduce the bearing's precision and affect its transmission quality. Therefore, we provide a turbojet engine bearing puller to solve these problems. Utility Model Content

[0003] To address the aforementioned problems, specifically those raised in the background section, this utility model proposes a turbojet engine bearing puller, comprising a threaded sleeve, with support rods fixedly mounted on both sides of the outer wall of the threaded sleeve, a sliding sleeve slidably mounted on the outer wall of the support rod, two connecting sleeves rotatably mounted on the outer wall of the sliding sleeve, a rocker arm fixedly mounted on the outer wall of the connecting sleeve, a slot being formed at the bottom of the rocker arm, and inserting rods into the two corresponding slots, with a screw threadedly connected to the inside of the connecting sleeve.

[0004] Preferably, the outer wall of the support rod is provided with a sliding groove, and the outer wall of the sliding sleeve is threaded with a screw, the threaded end of the screw abutting against the inner wall of the sliding groove.

[0005] Preferably, the bottom end of the screw is rotatably provided with a connecting seat.

[0006] Preferably, the insertion rod has a boss integrally formed at its central position.

[0007] The beneficial technical effects of this utility model are as follows: by setting two adjustable rockers and inserting a plug at the bottom of the rockers, the boss in the center of the plug can contact the inner ring of the bearing. When the screw is tightened, the inner ring of the bearing can be pulled out from the outer wall of the shaft. This design replaces the original pull claw pressing against the outer ring, thereby ensuring the accuracy of the bearing after it is pulled out. Attached Figure Description

[0008] Figure 1 A schematic diagram of the front view structure of this utility model is shown.

[0009] Figure 2 A partial structural schematic diagram of this utility model is shown.

[0010] The attached diagram shows the following reference numerals: 1. Threaded sleeve; 2. Support rod; 3. Sliding sleeve; 4. Connecting sleeve; 5. Rocker arm; 6. Insert rod; 7. Screw; 8. Slide groove; 9. Screw; 10. Connecting seat; 11. Boss. Detailed Implementation

[0011] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0012] This utility model proposes a turbojet engine bearing puller, including a threaded sleeve 1. Support rods 2 are fixedly mounted on both sides of the outer wall of the threaded sleeve 1. Sliding sleeves 3 are slidably mounted on the outer wall of the support rods 2. A sliding groove 8 is formed on the outer wall of the support rods 2. A screw 9 is threadedly connected through the outer wall of the sliding sleeve 3. The threaded end of the screw 9 abuts against the inner wall of the sliding groove 8. This design can fix the relative position of the sliding sleeves 3, thereby ensuring that the two sliding sleeves 3 have the same distance from the connecting sleeves 4. Two connecting sleeves 4 are rotatably mounted on the outer wall of the sliding sleeves 3. A rocker arm 5 is fixedly installed on the outer wall of the connecting sleeve 4. A slot is opened at the bottom of the rocker arm 5, and two corresponding insert rods 6 are inserted into the slots. A boss 11 is integrally formed at the center of the insert rod 6. The cross-section of the boss 11 is U-shaped to increase the contact area with the inner ring of the bearing. A screw 7 is threadedly connected to the inside of the connecting sleeve 4. A connecting seat 10 is rotatably installed at the bottom end of the screw 7. The design of the connecting seat 10 can avoid contact between the screw 7 and the shaft. The rotational connection between the connecting seat 10 and the screw 7 reduces the wear on the shaft.

[0013] For those skilled in the art, all electrical components and parts in this case are general standard parts or parts known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. All models are compatible with this solution and can operate normally. All electrical components in this case are connected to their compatible power supplies through wires. According to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence should refer to the working principle below, and the electrical connection is completed by the sequential operation of each electrical component. The detailed connection method is a well-known technology in the art, and the electrical control will not be described further.

[0014] Working principle: When the bearing needs to be disassembled, the operator can adjust the position of the sliding sleeve 3 according to the size of the bearing and the shaft. At this time, loosen the screw 9 so that the two sliding sleeves 3 can move closer or further apart, thereby controlling the lever arm length of the bearing. Then tighten the screw 9 to fix the position of the two sliding sleeves 3. Then, the boss 11 is placed under the inner ring of the bearing, and the screw 7 is tightened so that the connecting seat 10 contacts and abuts the end of the shaft. Then tighten the screw 7, so that the downward movement of the screw 7 drives the bearing to move upward until the bearing is pulled out. This method of pulling out the bearing allows the force to be applied directly to the shaft and the inner ring, thereby ensuring the accuracy of the bearing after disassembly and reuse.

[0015] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0016] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0019] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A turbojet engine bearing puller, characterized in that: The device includes a threaded sleeve (1), on both sides of the outer wall of the threaded sleeve (1) a support rod (2) is fixedly provided, the outer wall of the support rod (2) is slidably provided with a sliding sleeve (3), the outer wall of the sliding sleeve (3) is rotatably provided with two connecting sleeves (4), the outer wall of the connecting sleeve (4) is fixedly provided with a rocker arm (5), the bottom of the rocker arm (5) is provided with a slot, and two corresponding slots are provided with insert rods (6), and the internal thread of the connecting sleeve (4) is connected with a screw (7).

2. The turbojet engine bearing puller according to claim 1, characterized in that: The outer wall of the support rod (2) is provided with a sliding groove (8), and the outer wall of the sliding sleeve (3) is connected with a screw (9) through a thread, and the threaded end of the screw (9) abuts against the inner wall of the sliding groove (8).

3. The turbojet engine bearing puller according to claim 1, characterized in that: The bottom end of the screw (7) is rotatably provided with a connecting seat (10).

4. A turbojet engine bearing puller according to claim 1, characterized in that: The insertion rod (6) has an integrally formed boss (11) at its central position.

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