Fuel oil controller bearing disassembling device

Abstract

The utility model provides a bearing disassembling device for a fuel oil controller, and aims to solve the technical problems of low pulling efficiency and poor pulling quality caused by extremely small clearance of a carbon bearing in a pump cavity in the conventional bearing disassembling device. The connecting unit is provided with a connecting plate and a connecting rod. The connecting rod is matched with the inner cavity of the bearing and is in threaded connection with the connecting plate. The top end of the connecting plate is exposed out of the connecting plate and provided with a tension unit. The extrusion unit is matched with the bearing inner cavity, installed on the connecting rod and provided with a pressing ring, an expansion sleeve and a baffle. The compression ring and the expansion sleeve are sleeved on the connecting rod, the baffle is mounted on the connecting rod, and the expansion sleeve is arranged between the compression ring and the baffle. Wherein the baffle plate is close to the connecting plate along with the rotation of the connecting rod until the baffle plate is matched with the connecting plate and the pressing ring to clamp the expansion sleeve right in the inner cavity of the bearing, so that the expansion sleeve expands and is tightly attached to the inner cavity of the bearing, and the bearing can be uniformly and nondestructively pulled out of the pump cavity by the tension unit.

Description

Technical Field

[0001] This application relates to the field of aircraft equipment maintenance, and particularly to a fuel controller bearing disassembly device. Background Art

[0002] When a fuel controller fails to operate properly due to a carbon bearing failure inside it, it is often necessary to remove the carbon bearing from the pump cavity for maintenance. However, since the clearance of the carbon bearing in the pump cavity is very small, in the process of disassembling such bearings from the pump cavity, if general-purpose tools are used, not only do technicians need to extract the bearings individually, resulting in low disassembly efficiency, but also even if the bearings are extracted, they are very likely to be damaged due to uneven extraction force applied, and the disassembly quality cannot be guaranteed. Utility Model Content

[0003] The utility model provides a fuel controller bearing disassembly device to solve the problems raised in the above background art.

[0004] A fuel controller bearing disassembly device includes:

[0005] A connection unit, which has a connecting plate and a connecting rod; the connecting rod is arranged to match the inner cavity of the bearing and is threadedly connected to the connecting plate; the top end of the connecting rod protrudes from the connecting plate; a pulling force unit is installed at the top end of the connecting plate;

[0006] An extrusion unit, which is installed on the connecting rod to match the inner cavity of the bearing, and has a pressure ring, an expansion sleeve and a baffle; the pressure ring and the expansion sleeve are sleeved on the connecting rod, the baffle is installed on the connecting rod, and the expansion sleeve is arranged between the pressure ring and the baffle;

[0007] Wherein, the extrusion unit placed in the inner cavity of the bearing moves closer to the connecting plate as the connecting rod rotates until the pressure ring abuts against the connecting plate, and the expansion sleeve is expanded in cooperation with the baffle to tightly fit against the inner cavity of the bearing.

[0008] Further, a plurality of the connecting rods may be provided; the plurality of connecting rods are arranged to match the inner cavity of the bearing.

[0009] Further, the connecting rod includes a connecting portion, a guiding portion and a mounting portion;

[0010] The connecting portion, its top end passes through and protrudes from the connecting plate, and its bottom end is fixed to the top end of the guiding portion;

[0011] The guiding portion, which is threadedly connected to the connecting plate, is used for the connecting rod to move up and down along the extending direction of the connecting rod by rotation;

[0012] The mounting portion is fixed to the bottom end of the guiding portion.

[0013] Further, the connecting plate is provided with a first mounting hole for mounting the tension unit; the connecting plate is provided with two second mounting holes that are symmetrically arranged about its center and match the inner cavity of the bearing for threaded connection of the guiding portion.

[0014] Further, a hexagonal nut is fastened to the top end of the connecting rod.

[0015] Further, an installation groove is formed at the bottom end of the connecting rod; the baffle is penetrated by a screw rod and is mounted on the connecting rod by being connected to the installation groove through the screw rod.

[0016] Further, the tension unit includes a pull rod and a force - adding rod; one end of the pull rod is mounted on the connecting plate, and the other end is connected to the force - adding rod.

[0017] Further, the pull rod includes a fixing portion and a tension portion; the fixing portion is mounted on the connecting plate; one end of the tension portion is fixed to the fixing portion, and the other end thereof penetrates and is mounted on the force - adding rod.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] (1) As the baffle rotates with the connecting rod and approaches the connecting plate until it cooperates with the connecting plate and the pressure ring to clamp the expansion sleeve that is exactly in the inner cavity of the bearing, the expansion sleeve expands and tightly adheres to the inner cavity of the bearing, which is beneficial to reducing the probability of damage to the bearing caused by uneven pulling force when the carbon bearing is pulled out of the pump cavity together with the expansion sleeve, and ensures the quality of bearing extraction.

[0020] (2) By penetrating and thread - connecting a plurality of connecting rods that match the inner cavity of the carbon bearing at the connecting plate, and an extrusion unit is assembled on each connecting rod, technicians can extract multiple bearings simultaneously, improving the bearing extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of a fuel controller bearing disassembly device according to an embodiment of the present application;

[0023] Figure 2 It is a schematic structural diagram of a connecting rod of a fuel controller bearing disassembly device according to an embodiment of the present application;

[0024] Figure 3Top view of the connecting plate of a fuel controller bearing disassembly device according to an embodiment of the present application;

[0025] Figure 4 Side view of the connecting plate of a fuel controller bearing disassembly device according to an embodiment of the present application;

[0026] Figure 5 Side view of the pull rod of a fuel controller bearing disassembly device according to an embodiment of the present application.

[0027] Reference numerals:

[0028] 10. Booster rod; 11. Pull rod; 110. Fixed part; 111. Tensile part;

[0029] 20. Hexagonal nut; 22. Connecting plate; 220. Second mounting hole; 221. First mounting hole; 23. Hexagonal screw;

[0030] 3. Connecting rod; 30. Mounting groove; 31. Connecting part; 32. Mounting part; 33. Guide part;

[0031] 40. Expansion sleeve; 41. Pressure ring; 42. Baffle. Detailed implementation manners

[0032] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0033] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present utility model is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0035] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0038] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0039] The embodiments of the present utility model provide a fuel controller bearing disassembly device. Please refer to Figures 1 - 5 , which includes a connection unit, a pressing unit, and a pulling unit.

[0040] Specifically,

[0041] The connection unit includes a connection plate 22 and a connection rod 3; the connection rod 3 passes through the connection plate 22 to match the inner cavity of the carbon bearing and is threadedly connected to the connection plate 22. When the connection plate 22 is disposed above the inner cavity of the carbon bearing, the bottom end of the connection rod 3 can be extended into the inner cavity of the carbon bearing by rotating the connection rod 3.

[0042] The connecting plate 22 is provided with a first mounting hole 221. The connecting plate 22 is provided with a second mounting hole 220 that matches the inner cavity of the carbon bearing. That is, there may be a plurality of second mounting holes 220, and the center of each second mounting hole 220 can be aligned with the axis of the corresponding inner cavity of the carbon bearing. Preferably, the connecting plate 22 is provided with two second mounting holes 220 symmetrically centered thereon. The second mounting hole 220 adopts a threaded hole structure.

[0043] The connecting rod 3 is provided to penetrate through the second mounting hole 220 correspondingly, that is, the number of the connecting rods 3 is the same as that of the second mounting holes 220. The connecting rod 3 includes a connecting portion 31, a guiding portion 33 and a mounting portion 32. Among them, the mounting portion 32 is provided with a mounting groove 30 in the direction from bottom to top. The connecting portion 31 and the mounting portion 32 are respectively fixed at both ends of the guiding portion 33. When the connecting rod 3 is assembled to the connecting plate 22, the connecting portion 31 passes through the second mounting hole 220 and protrudes from the connecting plate 3. The threaded fit between the guiding portion 33 and the second mounting hole 220 enables the connecting rod 3 to reciprocate along the extending direction of the connecting rod 3 by rotating clockwise or counterclockwise.

[0044] To facilitate the rotation of the connecting rod 3, a hexagonal nut 20 can be fastened to the top end of the connecting portion, and the connecting rod 3 is rotated by rotating the nut clockwise or counterclockwise.

[0045] The extrusion unit is mounted on the mounting portion 32 to match the inner cavity of the carbon bearing, so that the extrusion unit can be placed in the inner cavity of the carbon bearing. The extrusion unit includes a pressure ring 41, an expansion sleeve 40 and a baffle 42. When the extrusion unit is placed in the bearing inner cavity, the rotation of the connecting rod 3 causes the extrusion unit to move towards the connecting plate until the pressure ring 41 abuts against the connecting plate 22, and in cooperation with the baffle 42, the expansion sleeve 40 expands and adheres tightly to the bearing inner cavity.

[0046] The pressure ring 41 is sleeved on the outer wall of the top of the mounting portion. The expansion sleeve 40 can be made of polyurethane material. While the expansion sleeve 40 is sleeved on the outer wall of the mounting portion, its top end is connected to the pressure ring 41, and its bottom end is connected to a baffle 42. The baffle 42 is penetrated by a hexagonal screw 23 and is connected through the cooperation of the hexagonal screw 23 in the mounting groove 30 to achieve the installation at the bottom end of the connecting rod. When the connecting rod 3 is rotated to make the extrusion unit move towards the connecting plate until it abuts against the bottom end of the connecting plate along with the mounting portion 32, the expansion sleeve 40 is clamped between the baffle 42 and the connecting plate 22 to make the expansion sleeve 40 expand. The extrusion unit equipped with the connecting unit is placed in the inner cavity of the carbon bearing, and the expansion sleeve 40 can be expanded by rotating the connecting rod 3 to form a tension and then adhere tightly to the bearing inner cavity.

[0047] The tensile unit includes a pull rod 11 and a force - adding rod 10. The pull rod 11 includes a fixing part 110 and a tensile part 111. The tensile part 111 is installed in the first mounting hole 221 through the fixing part 110 to realize its connection with the connecting plate 22. A force - adding rod 10 is installed at the top of the tensile part to facilitate the uniform application of force when the extrusion unit is placed into the bearing inner cavity or the bearing is pulled out of the pump cavity along with the extrusion unit.

[0048] Based on the above - mentioned embodiments, the working principle of the present application is as follows:

[0049] Technicians first place the extrusion unit into the carbon - bearing inner cavity by holding the force - adding rod 10 by hand. Then, by rotating the nut, the extrusion unit moves along with the mounting part 32 towards the direction close to the connecting plate until it abuts against the bottom end of the connecting plate. At the same time, the pressing force of the connecting plate 22 on the pressure ring 41 and the movement of the baffle 42 towards the direction close to the connecting plate can clamp the expansion sleeve 40 between them, causing the expansion sleeve 40 to expand and tightly adhere to the bearing inner cavity. At this time, by slowly pulling out the force - adding rod 10, the carbon bearing can also be pulled out accordingly, disassembling the carbon bearing from the pump cavity.

[0050] Based on the above - mentioned embodiments, the advantages of the present application are as follows:

[0051] (1) As the baffle 42 approaches the connecting plate 22 as it rotates along with the connecting rod 3 until it cooperates with the connecting plate 22 and the pressure ring 41 to clamp the expansion sleeve 40 in the bearing inner cavity, and the expansion sleeve 40 expands and tightly adheres to the bearing inner cavity, it is beneficial to reduce the probability of damage to the bearing caused by uneven pulling force when the carbon bearing is pulled out of the bearing inner cavity together with the expansion sleeve 40, ensuring the quality of bearing extraction.

[0052] (2) Since a number of connecting rods 3 matching the carbon - bearing inner cavity penetrate and are thread - connected at the connecting plate 22, and an extrusion unit is assembled on each connecting rod, technicians can extract multiple bearings simultaneously, improving the bearing extraction efficiency.

Claims

1. A fuel controller bearing disassembly device, characterized in that: The fuel controller bearing disassembly device includes: A connection unit having a connection plate and a connection rod; the connection rod is provided to match the inner cavity of the bearing and is threadedly connected to the connection plate; the top end of the connection rod protrudes from the connection plate; a tension unit is installed at the top end of the connection plate. An extrusion unit is installed on the connection rod to match the inner cavity of the bearing, and includes a pressure ring, an expansion sleeve, and a baffle; the pressure ring and the expansion sleeve are sleeved on the connection rod, the baffle is installed on the connection rod, and the expansion sleeve is arranged between the pressure ring and the baffle. Among them, the extrusion unit placed in the inner cavity of the bearing moves closer to the connection plate as the connection rod rotates until the pressure ring abuts against the connection plate, and the expansion sleeve is expanded in cooperation with the baffle to tightly fit against the inner cavity of the bearing.

2. The fuel controller bearing disassembly device according to claim 1, characterized in that: A plurality of the connection rods can be provided; the plurality of connection rods are provided to match the inner cavity of the bearing.

3. The fuel controller bearing disassembly device according to claim 2, characterized in that: The connection rod includes a connection part, a guiding part, and an installation part. The connection part has its top end passing through and protruding from the connection plate, and its bottom end is fixed to the top end of the guiding part. The guiding part is threadedly connected to the connection plate, and is used for the connection rod to move up and down along the extension direction of the connection rod by rotation. The installation part is fixed to the bottom end of the guiding part.

4. The fuel controller bearing disassembly device according to claim 3, characterized in that: The connection plate is provided with a first installation hole for installing the tension unit; the connection plate is provided with two second installation holes that are centered and match the inner cavity of the bearing for the threaded connection of the guiding part.

5. The fuel controller bearing disassembly device according to claim 1, characterized in that: A hexagonal nut is fastened to the top end of the connection rod.

6. The fuel controller bearing disassembly device according to claim 1, characterized in that: An installation groove is provided at the bottom end of the connection rod; the baffle is passed through by a screw rod and is installed on the connection rod by being connected to the installation groove through the screw rod.

7. The fuel controller bearing disassembly device according to claim 1, characterized in that: The tension unit includes a pull rod and a force - adding rod; one end of the pull rod is installed on the connection plate, and the other end is connected to the force - adding rod.

8. The fuel controller bearing disassembly device according to claim 7, characterized in that: The pull rod includes a fixing part and a tension part; the fixing part is installed on the connection plate; one end of the tension part is fixed to the fixing part, and the other end passes through and is installed on the force - adding rod.

Images