Adjustable height assembly fixture

Abstract

The height-adjustable assembling and debugging clamp is suitable for assembling of graphite rings and wave springs on graphite sealing devices, a groove is arranged on the inner ring surface of the graphite sealing device, the assembling and debugging clamp comprises a scale column with scale lines, a stand, a sliding ring, a base and a pressing plate, one end of the scale column is provided with a base plate, the other end can freely pass through the pressing plate, the sliding ring is provided in a structure with two open sides, the sliding ring is detachably installed at a preset position of the scale column, the height of the sliding ring in the vertical direction is higher than the height of the graphite sealing device in the vertical direction, when the pressing plate is pressed along the stand and under the action of the sliding ring, the pressing plate does not contact the graphite sealing device, failure of the wave spring is avoided, and the assembling efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of graphite ring auxiliary assembly components, and particularly relates to an adjustable height assembly and debugging fixture. Background Technology

[0002] When assembling a graphite sealing device for aviation applications with wave springs, the wave springs have a certain plastic force. Typically, the inner ring surface of the graphite sealing device has a groove where the wave spring and graphite ring are installed. During assembly, the sealing device needs to be continuously pressed to check the smoothness and elasticity of the rebound. Because the wave spring has a limited elastic range and working height, excessive compression can cause plastic deformation, reducing its rebound performance and affecting the sealing performance of the graphite sealing device. During assembly, the wave spring can easily exceed its compression range, causing plastic deformation and reducing its elasticity, thus affecting the sealing performance of the graphite sealing device and rendering the entire device unqualified. Furthermore, manual installation is time-consuming and inefficient. Utility Model Content

[0003] In view of this, the present invention provides an adjustable height assembly and debugging fixture to solve the technical problem of low efficiency in installing wave springs in the groove of graphite sealing devices in the existing method.

[0004] An adjustable-height assembly and debugging fixture is provided, suitable for assembling graphite rings and wave springs on a graphite sealing device. The fixture includes a graduated column with markings, a column, a sliding ring, a base, and a pressure plate. One end of the graduated column is fitted with a base plate, and the other end can freely pass through the pressure plate. The sliding ring has an open-sided structure.

[0005] The bottom end of the column is fixedly connected to the top surface of the base, and the other end is equipped with the pressure plate in a manner that allows it to move in the vertical direction;

[0006] The base has a mounting groove in the central area, and the chassis is assembled with the mounting groove in an interference fit. The graphite sealing device is freely sleeved on the bottom of the scale column and placed on the top surface of the chassis.

[0007] The sliding ring is detachably installed at a preset position on the scale column, and the height of the sliding ring in the vertical direction is higher than the height of the graphite sealing device. When the pressure plate is pressed down along the column, the pressure plate does not contact the graphite sealing device under the action of the sliding ring.

[0008] Preferably or optionally, the cross-sectional dimension of the mounting groove is larger than the cross-sectional dimension of the graphite sealing device, the cross-sectional dimension of the graphite sealing device is larger than the cross-sectional dimension of the sliding ring, and the inner ring surface dimension of the sliding ring is adapted to the dimension of the scale column.

[0009] Preferably or optionally, an assembly groove is provided in the vertical direction along the circumference of the scale column, and one end of the set screw passes through the sliding ring and is embedded in the assembly groove to fasten and limit the sliding ring.

[0010] Preferably or optionally, one end of the set screw is provided with a tapered structure, and the shape of the mounting groove is tapered, which can increase the contact area with the mounting groove and improve the tightening force of the set screw.

[0011] Preferably or optionally, the preset position is related to the model of the graphite sealing device, and different models of graphite sealing devices have different vertical height positions of the sliding ring.

[0012] The beneficial effects of this utility model are:

[0013] The design aims to improve the assembly pass rate of graphite sealing devices with wave springs for aviation applications and reduce the wear of elastic components (wave springs). By using sliding rings and mounting grooves, the installation difficulty is reduced. The sliding rings prevent continuous pressure on the graphite sealing device as in traditional methods. It should be noted that the graphite sealing device is in a free state in this fixture and can be moved or rotated appropriately to accommodate the installation of the wave spring in the groove, thus preventing excessive plastic deformation of the wave spring and its failure. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in 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.

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

[0016] Figure 2 A schematic diagram illustrating the assembly groove of this utility model, wherein,

[0017] 1. Base; 2. Column; 3. Pressure plate; 4. Sliding ring; 5. Scale column; 6. Set screw; 7. Graphite sealing device; 8. Mounting slot; 9. Assembly slot. Detailed Implementation

[0018] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. This utility model can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0021] To address the issue of reduced rebound performance of the elastic component (wave spring) during the assembly of graphite sealing devices for aviation applications with wave springs, an adjustable-height assembly and debugging fixture is designed to improve assembly pass rate, reduce wear on the elastic component (wave spring), and better suited for assembling graphite rings and wave springs on graphite sealing devices. The inner ring surface of the graphite sealing device has a groove, and the device is open at one end and has a hole at the other. See also... Figures 1 to 2 As shown, it includes a graduated column 5 with markings, a column 2, a sliding ring 4, a base 1, and a pressure plate 3. One end of the graduated column 5 is provided with a base plate, and the other end can freely pass through the pressure plate 3. The sliding ring 4 is designed with openings on both sides.

[0022] The bottom end of the column 2 is fixedly connected to the top surface of the base 1, and the other end is equipped with a pressure plate 3 in a manner that allows it to move in the vertical direction. That is, the pressure plate 3 can move up and down in the vertical direction on the column 2, for example, by means of gap assembly.

[0023] A mounting groove 8 is provided in the central area of ​​the base 1. The base and the mounting groove 8 are assembled with an interference fit. The graphite sealing device 7 is freely sleeved on the bottom of the scale column 5 and placed on the top surface of the base. The purpose of the mounting groove 8 is to reduce the contact area between the base 1 and the worktable surface, reduce the impact of unevenness of the worktable surface on the use of this fixture, and reduce the area of ​​the base 1 to be processed.

[0024] The sliding ring 4 is detachably installed at a preset position on the scale column 5, and the height of the sliding ring 4 in the vertical direction is higher than the height of the graphite sealing device 7. When the pressure plate 3 is pressed down along the column 2, the pressure plate 3 does not contact the graphite sealing device 7 under the action of the sliding ring 4.

[0025] After the utility model is put into use, because the sliding ring 4 is mechanically fixed to the scale post 5 using the set screw 6, the pressure plate 3 will not exceed the height of the sliding ring 4 when pressed. This completely solves the problem of reduced rebound performance of the wave spring during the assembly of the aviation graphite sealing device 7 with wave spring, improving the assembly qualification rate and reducing production costs.

[0026] In one specific embodiment, the cross-sectional dimension of the mounting groove 8 is larger than the cross-sectional dimension of the graphite sealing device 7, the cross-sectional dimension of the graphite sealing device 7 is larger than the cross-sectional dimension of the sliding ring 4, and the inner ring surface dimension of the sliding ring 4 is adapted to the dimension of the scale column 5.

[0027] Further, see Figure 2 As shown, to achieve the tightening force of the set screw 6, an assembly groove 9 is provided vertically along the circumference of the scale column 5. One end of the set screw 6 passes through the sliding ring 4 and is embedded in the assembly groove 9 to tighten and limit the sliding ring 4. Preferably, one end of the set screw 6 is provided with a tapered structure, and the shape of the assembly groove 9 is tapered, which can increase the contact area with the assembly groove 9 and improve the tightening force of the set screw 6. For example, the set screw 6 is an M3*5 set screw 6, which complies with the GB / T 78-2007 standard. The tapered end can be embedded in the groove of the shaft surface to enhance the fixation.

[0028] In one specific embodiment, the preset position is related to the model of the graphite sealing device 7. Different models of graphite sealing devices 7 correspond to different vertical height positions of the sliding ring 4. Specifically, firstly, the compression limit of the elastic element (wave spring) is calculated based on the height of the graphite sealing device 7, and the distance between the wave spring and the upper surface of the base plate of the scale column 5 is calculated at this time. The sliding ring 4 is moved to the corresponding position on the scale column 5, and the sliding ring 4 is fixed with the set screw 6. Then, the pressure plate 3 can be used to press the graphite sealing device 7.

[0029] Furthermore, the column 2 and the pressure plate 3 are assembled with a gap, and both the base 1 and the pressure plate 3 are triangular structures with rounded transition angles.

[0030] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An adjustable-height assembly and debugging fixture, suitable for assembling graphite rings and wave springs on a graphite sealing device, characterized in that, The system includes a graduated column, a vertical column, a sliding ring, a base, and a pressure plate. One end of the graduated column is fitted with a base plate, and the other end can freely pass through the pressure plate. The sliding ring has an opening on both sides. The bottom end of the column is fixedly connected to the top surface of the base, and the other end is equipped with the pressure plate in a manner that allows it to move in the vertical direction; The base has a mounting groove in the central area. The chassis and the mounting groove are assembled with an interference fit. The graphite sealing device is freely sleeved on the bottom of the scale column and placed on the top surface of the chassis. The sliding ring is detachably installed at a preset position on the scale column, and the vertical height of the sliding ring is higher than the vertical height of the graphite sealing device. When the pressure plate is pressed down along the column, the pressure plate does not contact the graphite sealing device under the action of the sliding ring.

2. The assembly and debugging fixture according to claim 1, characterized in that, The cross-sectional dimension of the mounting groove is larger than that of the graphite sealing device, the cross-sectional dimension of the graphite sealing device is larger than that of the sliding ring, and the inner ring surface dimension of the sliding ring is adapted to the dimension of the scale column.

3. The assembly and debugging fixture according to claim 1, characterized in that, The scale column has a mounting groove in the vertical direction. By passing one end of the set screw through the sliding ring and embedding it into the mounting groove, the sliding ring can be fastened and limited.

4. The assembly and debugging fixture according to claim 3, characterized in that, One end of the set screw is provided with a tapered structure, and the assembly groove is tapered in shape, which can increase the contact area between the set screw and the assembly groove and improve the tightening force of the set screw.

5. The assembly and debugging fixture according to claim 1, characterized in that, The preset position is related to the model of the graphite sealing device. Different models of graphite sealing devices have different vertical height positions of the sliding ring.

6. The assembly and debugging fixture according to claim 1, characterized in that, The column and the pressure plate are assembled with a gap.

7. The assembly and debugging fixture according to claim 1, characterized in that, Both the base and the pressure plate are triangular structures with rounded transition angles.

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