Auxiliary tool for installing rotary joint stator lip-shaped seal

Abstract

The utility model discloses a swivel joint stator lip-shaped seal installation auxiliary tool, which belongs to the technical field of machinery, and comprises a stator and a seal spacer ring, the stator is provided with a plurality of tools, the tools are uniformly distributed at the top of the stator, one end of each tool is connected to the stator, the other end of each tool is fixedly provided with a limiting column, and the limiting column is fixedly connected with the stator. The bottom of the limiting column abuts against the sealing spacer ring, a positioning column is fixedly arranged on the tool, the side face of the positioning column abuts against the inner surface ring of the stator, and the stator installation tool has the advantage that the stator installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to an auxiliary tooling for installing a rotary joint stator lip seal. Background Technology

[0002] The slewing joint of a tunnel boring machine (TBM) serves as the conduit for the cutterhead nozzles and hydraulic lines. Its main structure consists of a stator and a rotor. The rotor is connected to the cutterhead via a cutterhead sleeve and rotates with the cutterhead. The stator is composed of multiple stacked layers, each layer having one channel, fixed to the front shield. A lip seal design is used between the channels to achieve sealing, ensuring each channel is independent.

[0003] When repairing and replacing the lip seal on a rotary joint, the entire rotary joint needs to be disassembled. Each stator has fixed components, including a lip seal at the bottom, an O-ring seal, a lip seal at the top, and a sealing spacer ring. During stator assembly, these seals are generally installed on the stator first, and then the stator is fitted into the vertically placed rotor. The lip seal at the bottom of the stator faces upward, and the lip seal at the top faces downward. The lip seal lips fit against the outer surface of the rotor, and their sealing function is achieved through the compression of the lips.

[0004] However, during the process of fitting the stator into the rotor, the top lip seal, with its lip facing downwards, encounters resistance during assembly, causing the lip seal and sealing spacer to be pushed away from the stator, resulting in installation difficulties and low efficiency.

[0005] Based on this, this utility model designs an auxiliary tooling for installing the stator lip seal of a rotary joint to solve the above problems. Utility Model Content

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plurality of tooling fixtures are provided on the stator, the tooling fixtures are evenly distributed on the top of the stator, one end of the tooling fixture is connected to the stator, and a limiting post is fixedly provided at the other end of the tooling fixture. The bottom of the limiting post abuts against the sealing spacer ring, and a positioning post is fixedly provided on the tooling fixture. The side of the positioning post abuts against the inner ring of the stator.

[0007] By adopting the above technical solution, when the stator is inserted downward into the rotor, the sealing spacer and lip seal on the stator are squeezed upward by the force. At this time, the bottom of the limiting column can press against the upper sealing spacer to prevent it from moving under the force. At the same time, the positioning column and the inner ring of the stator are pressed together, which further enhances the stability of the tooling, makes the installation of the stator easier, and improves the installation efficiency of the stator.

[0008] Preferably, the top of the stator has a threaded hole, and a bolt is threaded into the threaded hole. The tooling has an installation hole, and the tooling is installed in the threaded hole by bolts.

[0009] By adopting the above technical solution, bolted connections can ensure the structural strength of the connection and can be easily adjusted or replaced when needed.

[0010] Preferably, the tooling is configured as a triangular shape with rounded edges, the mounting hole is opened at one of the corners, and the positioning pins are distributed at the left and right corners of the rounded edges.

[0011] By adopting the above technical solution, the triangular structure makes the installation of the tooling more stable and the force more uniform. The rounded edge is to avoid the rotor and prevent the tooling from damaging the side of the rotor.

[0012] Preferably, a flat washer is provided at the bottom of the bolt.

[0013] By adopting the above technical solution, flat washers can increase the contact area between the bolt and the tooling surface, thereby improving the stability and durability of the connection.

[0014] In summary, this application has the following beneficial technical effects: when the stator is inserted downward into the rotor, the sealing spacer and lip seal on the stator are squeezed upward by force. At this time, the bottom of the limiting post can press against the upper sealing spacer to prevent it from moving under force. At the same time, the positioning post and the inner ring of the stator are pressed together, which further enhances the stability of the tooling, makes the installation of the stator easier, and improves the installation efficiency of the stator. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0017] Figure 2 This is a schematic diagram of the tooling structure in this embodiment;

[0018] Figure 3 This is a schematic diagram of the overall cross-section of this embodiment;

[0019] Figure 4 for Figure 3 A magnified structural diagram of A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Rotor; 2. Tooling; 3. Stator; 4. Mounting hole; 5. Limiting post; 6. Positioning post; 7. Bolt; 8. Flat washer; 9. Sealing spacer; 10. Lip seal; 11. Threaded hole. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is combined with Figure 1-4 This application is described in further detail.

[0024] A rotary joint stator 3 lip seal 10 installation auxiliary tooling 2 includes a stator 3 and a sealing spacer 9. Several tooling 2 are provided on the stator 3, and the tooling 2 is evenly distributed on the top of the stator 3. One end of the tooling 2 is connected to the stator 3, and a limiting post 5 is fixedly provided on the other end of the tooling 2. The bottom of the limiting post 5 abuts against the sealing spacer 9. A positioning post 6 is fixedly provided on the tooling 2. The side of the positioning post 6 abuts against the inner ring of the stator 3. A threaded hole 11 is opened on the top of the stator 3, and a bolt 7 is threadedly connected in the threaded hole 11. An installation hole 4 is opened on the tooling 2, and the tooling 2 is installed in the threaded hole 11 by the bolt 7.

[0025] In use, first assemble the lip seal 10 and the sealing spacer 9 in sequence. Then, take the fixture 2 and align the mounting hole 4 on the fixture 2 with the threaded hole 11 on the top of the stator 3. Tighten it with the bolt 7 so that the fixture 2 is fixed to the top of the stator 3. At this time, the bottom of the limiting post 5 on the fixture 2 is in contact with the sealing spacer 9, and the positioning post 6 is pressed against the inner surface of the stator 3 to prevent the fixture 2 from rotating. During the process of fitting the stator 3 into the rotor 1, the stator 3 is pushed downward along the rotor 1. The resistance between the stator 3 and the rotor 1 causes the lip seal 10 and the sealing spacer 9 on the stator 3 to move upward. The limiting post 5 can restrict the sealing spacer 9 in the stator 3 to prevent it from running upward. This avoids the need to reassemble the lip seal 10 and the sealing spacer 9, making the installation of the stator 3 simpler and improving the installation efficiency of the stator 3.

[0026] The bolt 7 connection ensures the structural strength of the connection and allows for easy adjustment or replacement when needed. The fixture 2 is designed as a triangular shape with rounded edges, with the mounting hole 4 located at one corner and the positioning pins 6 distributed at the left and right corners of the rounded edge. The triangular structure makes the installation of the fixture 2 more stable and the force evenly distributed. The positioning pins 6 at the left and right corners allow the fixture 2 to have a wider range of functions. The rounded edge is to avoid the rotor 1 and prevent the fixture 2 from damaging the side of the rotor 1. A flat washer 8 is provided under the bolt 7. When the fixture 2 is fastened, the flat washer 8 can increase the contact area between the bolt 7 and the surface of the fixture 2, thereby improving the stability and durability of the connection.

[0027] The implementation principle of this embodiment is as follows: In use, first assemble the lip seal 10 and the sealing spacer 9 in sequence, then take the tool 2, align the mounting hole 4 on the tool 2 with the threaded hole 11 on the top of the stator 3, install the flat washer 8 and bolt 7 in sequence and lock them, so that the tool 2 is fastened to the top of the stator 3. At this time, the arc edge of the tool 2 faces the rotor 1, the bottom of the limiting post 5 on both sides of the tool 2 contacts the sealing spacer 9, and the positioning post 6 abuts against the inner surface of the stator 3 to prevent the tool 2 from rotating. During the process of fitting the stator 3 into the rotor 1, the stator 3 is pushed down along the rotor 1, and resistance is generated between the stator 3 and the rotor 1, so that the lip seal 10 and the sealing spacer 9 on the stator 3 move upward. The limiting post 5 can restrict the sealing spacer 9 in the stator 3 to prevent it from running upward, avoiding the need to reassemble the lip seal 10 and the sealing spacer 9, making the installation of the stator 3 simpler and improving the installation efficiency of the stator 3.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to 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.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary tooling for installing a stator lip seal on a rotary joint, comprising a stator (3) and a sealing spacer (9), characterized in that: The stator (3) is provided with a plurality of tooling (2), the tooling (2) is evenly distributed on the top of the stator (3), one end of the tooling (2) is connected to the stator (3), and the other end of the tooling (2) is fixedly provided with a limiting post (5). The bottom of the limiting post (5) abuts against the sealing spacer (9). The tooling (2) is fixedly provided with a positioning post (6), and the side of the positioning post (6) abuts against the inner ring of the stator (3).

2. The auxiliary tooling for installing the stator lip seal of a rotary joint according to claim 1, characterized in that: The stator (3) has a bolt (7) hole at the top, and a bolt (7) is threaded into the bolt (7) hole. The tooling (2) has a connecting hole, and the tooling (2) is installed in the bolt (7) hole by bolt (7).

3. The auxiliary tooling for installing the stator lip seal of a rotary joint according to claim 2, characterized in that: The fixture (2) is configured as a triangular shape with a rounded edge. The fixture (2) is provided with a mounting hole (4), which is located at one of the corners. The positioning pins (6) are distributed on the left and right corners of the rounded edge.

4. The auxiliary tooling for installing the stator lip seal of a rotary joint according to claim 2, characterized in that: A flat washer (8) is provided at the bottom of the bolt (7).

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