Auxiliary mounting jig for ensuring perpendicularity of dowel mounting

Abstract

This utility model discloses an auxiliary installation fixture for ensuring the verticality of pin installation. It is applicable to the assembly of graphite sealing devices for aviation applications with pins. The graphite sealing device includes an inner shell and an outer shell mounted on top of the inner shell. The top surface of the inner shell is installed inside the bottom surface of the outer shell, and a pin hole is provided in the overlapping part. The pin has a T-shaped structure with a flat head at its large end. It includes a horizontal pressure plate and a vertical pressure plate installed perpendicular to the horizontal pressure plate. The vertical pressure plate has an L-shaped structure, and the end face of the L-end has a through groove in the vertical direction. The shape of the through groove matches the shape of the flat head to ensure the verticality of the pin during installation. The axial length of the horizontal pressure plate is greater than the diameter of the outer shell, which will improve the assembly qualification rate of graphite sealing devices for aviation applications with pins and reduce pin wear.

Description

Technical Field

[0001] This utility model belongs to the technical field of pin installation clamps, and particularly relates to an auxiliary installation clamp that ensures the verticality of pin installation. Background Technology

[0002] When assembling a graphite sealing device for aviation with pins, the design has strict requirements for the perpendicularity tolerance of the pin centerline to the side of the housing. Due to the small size of the pins and the fact that one end of the pins has a flat head, it is difficult to ensure the perpendicularity requirement of the flat head of the pins during assembly by manual installation. The manual operation method is time-consuming, cannot meet the perpendicularity requirement, and has low overall installation efficiency. Utility Model Content

[0003] In view of this, the auxiliary installation fixture provided by this utility model ensures the verticality of the pin installation and solves the technical problem of low efficiency in installing pins on the side of the housing of the graphite sealing device.

[0004] An auxiliary mounting fixture for ensuring the verticality of pin installation is disclosed, suitable for assembling a graphite sealing device for aviation applications with pins. The graphite sealing device includes an inner housing and an outer housing mounted above the inner housing. The top surface of the inner housing is mounted within the bottom surface of the outer housing, and a pin hole is provided in the overlapping portion. The pin has a T-shaped structure with a flattened head at its large end. The fixture includes a horizontal pressure plate and a vertical pressure plate mounted perpendicular to the horizontal pressure plate. The vertical pressure plate is configured with an L-shaped structure, and the end face of the L-end is provided with a through groove in the vertical direction. The shape of the through groove is adapted to the shape of the flat head to ensure the verticality of the pin during installation. The axial length of the horizontal pressure plate is greater than the diameter of the outer shell.

[0005] Preferably or optionally, the end faces at both ends of the transverse pressure plate are provided with rounded transition angles.

[0006] Preferably or optionally, the cross-section of the through groove is configured as a T-shaped structure.

[0007] Preferably or optionally, the through groove and the pin are fitted with a slight interference fit.

[0008] Preferably or optionally, a groove is provided on the side at the center point of the horizontal pressure plate, and the depth of the groove is adapted to the thickness of the horizontal pressure plate.

[0009] Preferably or optionally, the bottom of the groove is provided with a screw hole, and the vertical pressure plate is provided with mounting holes spaced apart along the axial direction. The screw passes through the mounting hole and is threadedly connected to the screw hole, which can accommodate the installation of pins of different types of graphite sealing devices.

[0010] The beneficial effects of this utility model are: By installing horizontal and vertical pressure plates perpendicularly and creating a through groove on one end face of the vertical pressure plate, the problem of difficult pin installation and the inability to guarantee the perpendicularity of the pin's centerline to the side of the housing during the assembly of aerospace graphite sealing devices with pins is solved. Ensuring the perpendicularity of the pin to the side of the housing improves the assembly pass rate of aerospace graphite sealing devices with pins and reduces pin wear. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 A schematic diagram illustrating the assembly groove of this utility model, wherein, 1. Inner shell; 2. Outer shell; 3. Horizontal pressure plate; 4. Vertical pressure strip; 5. Pin; 6. Collar; 7. Mounting hole. Detailed Implementation

[0013] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0014] 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.

[0015] 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.

[0016] like Figures 1 to 2 The auxiliary mounting fixture shown ensures the verticality of the pin 5 installation and is suitable for assembling an aerospace graphite sealing device with pin 5. The graphite sealing device includes an inner housing 1 and an outer housing 2 mounted on top of the inner housing 1. The top surface of the inner housing 1 is mounted on the bottom surface of the outer housing 2, and the overlapping part is provided with a pin hole. The pin 5 has a T-shaped structure and its large end has a flat head 51. It includes a horizontal pressure plate 3 and a vertical pressure plate mounted perpendicular to the horizontal pressure plate 3. The vertical pressure plate has an L-shaped structure, and the end face of the L-end has a through groove in the vertical direction. The shape of the through groove matches the shape of the flat head 51. The axial length of the horizontal pressure plate 3 is greater than the diameter of the outer housing 2. During assembly, the flattened head 51 of the pin 5 is inserted into the through groove, and the horizontal pressure plate 3 is placed on the top surface of the outer shell 2. The horizontal pressure plate 3 is moved horizontally, and the vertical pressure plate is rotated when the pin 5 is close to the pin hole. The pin 5 is aligned with the pin hole, and the back of the L end of the vertical pressure plate is struck with an external device to complete the installation of the pin 5 in the pin hole. Since the through groove is set vertically, the perpendicularity of the flattened head 51 of the pin 5 to the horizontal section of the inner shell 1 can be ensured during the striking process, and the flattened head 51 is prevented from tilting. After assembly, the horizontal pressure plate 3 is pulled out vertically, and the installation of all pins 5 is completed in a cyclical manner.

[0017] In one specific embodiment, the end faces of both ends of the horizontal pressure plate 3 are provided with rounded transition angles to avoid damage to the outer shell 2 during collision. Preferably, the cross section of the through groove is set with a T-shaped structure, and the through groove and the pin 5 are fitted in a slightly interference manner.

[0018] Furthermore, a groove 6 is provided on the side at the center point of the horizontal pressure plate 3. The depth of the groove 6 is adapted to the thickness of the horizontal pressure plate 3, and the horizontal pressure plate 3 and the groove 6 are assembled in an interference fit.

[0019] In one specific embodiment, a screw hole is provided at the bottom of the groove 6, and mounting holes are provided at intervals on the vertical pressure plate. Screws pass through the mounting holes 7 and are threadedly connected to the screw holes to accommodate the installation of different types of graphite sealing device pins 5. Preferably, threaded holes are provided on the end faces of both ends of the horizontal pressure plate 3 to extend the horizontal pressure plate 3. For example, an extension block with a matching cross-sectional size is used. A screw is installed on one side of the extension block, which can cooperate with the threaded hole to extend the axial length of the horizontal pressure plate 3.

[0020] Process Requirements: To ensure the perpendicularity of the centerline of pin 5 to the top surface of outer shell 2, the upper and lower surfaces of the horizontal pressure plate 3 must strictly guarantee parallelism and flatness. The values ​​of parallelism and flatness can be adjusted according to the perpendicularity values ​​specified in the process. Additionally, the parallelism between the side of the rectangular groove on the vertical pressure strip 4 and the side of the vertical pressure strip 4 must be guaranteed; the parallelism value can be adjusted according to the perpendicularity values ​​specified in the process. This structure utilizes a mechanical connection to fully leverage the reference surface required for perpendicularity in the process, ensuring 100% perpendicularity of the centerline of pin 5 to the top surface of outer shell 2, thus improving the installation qualification rate and efficiency.

[0021] 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 auxiliary mounting fixture for ensuring the verticality of pin installation, suitable for assembling an aerospace graphite sealing device with pins, the graphite sealing device comprising an inner shell and an outer shell mounted above the inner shell, wherein the top surface of the inner shell is mounted inside the bottom surface of the outer shell and a pin hole is provided in the overlapping portion, the pin having a T-shaped structure and a flattened head at its large end, characterized in that, It includes a horizontal pressure plate and a vertical pressure plate installed perpendicular to the horizontal pressure plate, wherein, The vertical pressure plate is configured with an L-shaped structure, and the end face of the L-end is provided with a through groove in the vertical direction. The shape of the through groove is adapted to the shape of the flat head to ensure the verticality of the pin during installation. The axial length of the horizontal pressure plate is greater than the diameter of the outer shell.

2. The auxiliary mounting fixture of claim 1, wherein, Both ends of the horizontal pressure plate are provided with rounded transition angles.

3. The auxiliary mounting fixture of claim 1, wherein, The cross-section of the through groove is T-shaped.

4. The auxiliary mounting fixture of claim 3, wherein, The through groove and the pin are fitted with a slight interference fit.

5. The auxiliary mounting fixture of claim 1, wherein, A groove is provided on the side at the center point of the horizontal pressure plate, and the depth of the groove is adapted to the thickness of the horizontal pressure plate.

6. The auxiliary mounting fixture of claim 5, wherein, The horizontal pressure plate and the groove are assembled with an interference fit.

7. The auxiliary mounting fixture of claim 5, wherein, The bottom of the groove is provided with a screw hole, and the vertical pressure plate is provided with mounting holes at intervals along the axial direction. The screw passes through the mounting hole and is threadedly connected to the screw hole, which can adapt to the installation of pins of different types of graphite sealing devices.

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