A sealing ring assembly tool and a sealing ring assembly method

Abstract

The application relates to a sealing ring assembling tool which comprises a mandrel, a pressing sleeve and a limiting piece. The lower end of the mandrel is provided with a clamping groove for clamping a sealing ring to be installed. The groove opening of the clamping groove is arranged downward. The upper end of the limiting piece extends into the clamping groove and is fixedly connected with the mandrel. The lower end of the limiting piece extends downward beyond the lower end surface of the mandrel. The limiting piece and the two groove walls of the clamping groove are both provided with gaps for clamping the sealing ring to be installed. The pressing sleeve is sleeved on the periphery of the mandrel. The pressing sleeve can push the sealing ring clamped in the clamping groove downward out of the clamping groove. The application also provides a sealing ring assembling method which adopts the above sealing ring assembling tool. The application can reduce the difficulty of installing the sealing ring in an elongated hole, improve the success rate of installing the sealing ring in the elongated hole, and ensure the quality of installing the sealing ring in the elongated hole.

Description

Technical Field

[0001] This invention relates to marine low-speed engines, specifically to a sealing ring assembly fixture and a sealing ring assembly method. Background Technology

[0002] During the assembly of marine low-speed engine injectors, a sealing ring needs to be installed in a narrow channel. It is impossible to install the sealing ring directly by hand in the narrow channel. Using ordinary tools (such as tweezers) to assist in the installation of the sealing ring is very difficult and has a low success rate. Summary of the Invention

[0003] The purpose of this invention is to provide a sealing ring assembly fixture and a sealing ring assembly method to reduce the difficulty of installing sealing rings in slender channels.

[0004] The present invention discloses a sealing ring assembly fixture, comprising a mandrel, a clamping sleeve, and a limiting member. The lower end of the mandrel is provided with a clamping groove for clamping the sealing ring to be installed, the groove opening facing downwards. The upper end of the limiting member extends into the clamping groove and is fixedly connected to the mandrel, and the lower end of the limiting member extends downwards from the lower end face of the mandrel. There is a gap between the limiting member and the two groove walls of the clamping groove for the sealing ring to be installed to be inserted. The clamping sleeve is fitted around the mandrel, and the clamping sleeve can push the sealing ring to be installed, which is clamped in the clamping groove, downwards out of the clamping groove.

[0005] Optionally, the bottom surface of the clamping groove is an inclined surface that is inclined along the length direction of the clamping groove.

[0006] Optionally, the deep end of the clamping groove extends through the circumferential surface of the mandrel.

[0007] Optionally, the depth of the shallowest end of the clamping groove is 0.

[0008] Optionally, the limiting member is a limiting screw, and a threaded hole is provided at the bottom surface of the clamping groove, and the limiting screw is threadedly engaged with the threaded hole.

[0009] Optionally, the mandrel includes a mandrel body and an outer flange disposed at the lower end of the mandrel body. The inner diameter of the clamping sleeve is smaller than the outer diameter of the outer flange, and the lower end of the clamping sleeve is provided with a groove for engaging with the outer flange.

[0010] Optionally, the upper section of the mandrel is provided with an external thread, and a clamping nut for pushing the clamping sleeve downward is threadedly connected to the external thread.

[0011] Optionally, a clamping block is fitted around the mandrel, the clamping block being disposed between the clamping nut and the clamping sleeve, and the outer diameter of the clamping block being larger than the outer diameter of the clamping sleeve.

[0012] Optionally, it may also include a positioning block for supporting the seal to be installed upward as the clamping sleeve pushes the seal to be installed downward.

[0013] The present invention discloses a sealing ring assembly method using the aforementioned sealing ring assembly fixture, comprising the following steps: clamping the sealing ring to be installed in a clamping groove; installing a positioning block into the sealing ring mounting groove of the elongated channel, ensuring that the upper side of the positioning block is flush with the lower wall of the sealing ring mounting groove; supporting the lower end of the limiting member downward on the positioning block; pushing the clamping sleeve downward; and using the clamping sleeve to push the sealing ring to be installed downward out of the clamping groove, so that the sealing ring to be installed falls into the sealing ring mounting groove of the elongated channel.

[0014] This invention reduces the difficulty of installing sealing rings in narrow channels, increases the success rate of installing sealing rings in narrow channels, and ensures the quality of installing sealing rings in narrow channels. It is efficient and convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the working process of the sealing ring assembly fixture described in the specific implementation embodiment;

[0016] Figure 2 This is a bottom view of the mandrel described in the specific embodiment.

[0017] In the diagram: 1—Target component; 2—Elongated channel; 3—Sealing ring mounting groove; 4—Pressure sleeve; 5—Center hole; 6—Counterpart; 7—Mandrel; 8—Clamping groove; 9—Outer flange; 10—External thread; 11—Pressure nut; 12—Limit screw; 13—Pressure block; 14—Positioning block; 15—Protective plate; 16—Threaded hole; 17—Sealing ring to be installed. Detailed Implementation

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] like Figure 1 The sealing ring assembly fixture shown includes a mandrel 7, a clamping sleeve 4, and a limiting member. The lower end of the mandrel 7 is provided with a clamping groove 8 for clamping the sealing ring 17 to be installed. The groove opening of the clamping groove 8 is set downward. The upper end of the limiting member extends into the clamping groove 8 and is fixedly connected to the mandrel 7. The lower end of the limiting member extends downward from the lower end face of the mandrel 7. There is a first gap between the limiting member and the two groove walls of the clamping groove 8 for the sealing ring 17 to be installed to be inserted. The clamping sleeve 4 is fitted around the mandrel 7. The center hole 5 of the clamping sleeve 4 is slidably engaged with the mandrel 7. The clamping sleeve 4 can push the sealing ring 17 to be installed, which is clamped in the clamping groove 8, downward out of the clamping groove 8.

[0020] Using the above technical solution, the sealing ring assembly fixture and the positioning block 14 can be used together to install the sealing ring in the elongated channel 2. The sealing ring 17 to be installed is clamped in the clamping groove 8, and the positioning block 14 is installed in the sealing ring installation groove 3 of the elongated channel 2, so that the upper side of the positioning block 14 is flush with the lower groove wall of the sealing ring installation groove 3. The lower end of the limiting member is supported downward on the positioning block 14, and the pressing sleeve 4 is pushed downward. The pressing sleeve 4 is used to push the sealing ring 17 to be installed downward out of the clamping groove 8. The sealing ring 17 to be installed returns to its original shape under its own elastic force, so that the sealing ring 17 to be installed falls into the sealing ring installation groove 3 of the elongated channel 2. During the installation of the sealing ring, the lower end of the limiting member is supported on the positioning block 14. A second gap is defined between the upper side of the positioning block 14 and the lower end face of the mandrel 7 to allow the sealing ring 17 to be installed to smoothly return to its original shape. This second gap can also guide the sealing ring 17 to be installed into the sealing ring installation groove 3 of the elongated channel 2. At the same time, the limiting member extends into the clamping groove 8 to prevent the sealing ring 17 to be clamped in the clamping groove 8. The clamping groove 8 is fitted around the limiting member, which can prevent the sealing ring 17 to be installed from being clamped in the clamping groove 8 along the length of the clamping groove 8. The directional disengagement of the clamping groove 8 can prevent the sealing ring 17 to be installed from disengaging from the clamping groove 8 during the process of the mandrel 7 extending into the elongated channel 2, thereby improving the success rate of installing the sealing ring in the elongated channel 2. The clamping groove 8 is provided at the lower end of the mandrel 7 to clamp the sealing ring 17 to be installed, and the sealing ring in the clamping groove 8 is pushed out by the clamping sleeve 4 surrounding the mandrel 7. The diameter of the mandrel 7 and the clamping sleeve 4 can be set to be relatively small, which provides convenience for installing the sealing ring in the elongated channel 2.

[0021] In some embodiments, such as Figure 1 As shown, the bottom surface of the clamping groove 8 is an inclined surface that is set along the length direction of the clamping groove 8. Setting the clamping groove 8 as an inclined groove facilitates clamping a larger diameter sealing ring 17 to be installed, and facilitates the installation of the sealing ring in the narrow channel 2. At the same time, the inclined surface can also guide the sealing ring 17 to be installed away from the clamping groove 8, reducing or even eliminating the possibility that the sealing ring 17 to be installed may get stuck or even jammed during the process of the clamping sleeve 4 pushing the sealing ring 17 to be installed downward.

[0022] In some embodiments, such as Figure 1 and Figure 2As shown, the deep end of the clamping groove 8 penetrates the circumferential surface of the mandrel 7, forming an inclined groove with an open lower side and a deep end side at the lower end of the mandrel 7. Using the above technical solution, the sealing ring 17 to be installed, clamped in the clamping groove 8, can extend out of the clamping groove 8 from its deep end, which is beneficial for clamping sealing rings 17 with larger diameters. This facilitates the installation of sealing rings in the elongated channel 2. Simultaneously, the portion of the sealing ring 17 extending out of the clamping groove 8 from its deep end is used for pushing by the clamping sleeve 4, facilitating the clamping sleeve 4 to push the sealing ring 17 downwards out of the clamping groove 8.

[0023] In some embodiments, the depth of the shallow end of the clamping groove 8 is 0, that is, the shallow end of the clamping groove 8 is located on the lower end face of the spindle 7. The sealing ring 17 to be installed, which is clamped in the clamping groove 8, can extend obliquely from the shallow end of the clamping groove 8, which provides convenience for clamping a sealing ring 17 with a larger diameter.

[0024] In some embodiments, the limiting member is a limiting screw 12, and a threaded hole 16 is provided at the bottom surface of the clamping groove 8, with the limiting screw 12 threadedly engaging with the threaded hole 16. By rotating the limiting screw 12, the position of the limiting screw 12 in the vertical direction can be adjusted, thereby adjusting the width of the second gap and accommodating sealing rings 17 of different sizes to be installed.

[0025] In some embodiments, the mandrel 7 includes a mandrel body and an outer flange 9 disposed at the lower end of the mandrel body. The inner diameter of the clamping sleeve 4 is smaller than the outer diameter of the outer flange 9. The lower end of the clamping sleeve 4 is provided with a countersunk groove 6 for engaging with the outer flange 9. When the outer flange 9 engages with the countersunk groove 6, the lower end face of the mandrel 7 is flush with the lower end face of the clamping sleeve 4. The engagement of the outer flange 9 and the countersunk groove 6 defines the lower limit of the stroke of the clamping sleeve 4. When the outer flange 9 engages with the countersunk groove 6, the lower end face of the mandrel 7 is flush with the lower end face of the clamping sleeve 4, which facilitates the smooth recirculation of the sealing ring 17 to be installed.

[0026] In some embodiments, the upper section of the mandrel 7 is provided with an external thread 10, and a clamping nut 11 for pressing the sleeve 4 downward is threadedly connected to the external thread 10. The clamping nut 11 can be rotated to drive the clamping sleeve 4 to move downward, which can provide a more reliable clamping sleeve 4 driving method with greater pushing force.

[0027] In some embodiments, a clamping block 13 is fitted around the mandrel 7, and the clamping block 13 is disposed between the clamping nut 11 and the clamping sleeve 4. The outer diameter of the clamping block 13 is larger than the outer diameter of the clamping sleeve 4. By providing the clamping block 13, it is convenient to directly push the clamping sleeve 4 using the clamping block 13, thus providing a more convenient driving method for the clamping sleeve 4. In practical use, a protective plate 15 can be provided at the upper end of the elongated channel 2 to prevent the clamping block 13 from damaging the target component 1.

[0028] In some embodiments, the sealing ring assembly fixture further includes a positioning block 14 for supporting the sealing ring 17 to be installed upwards during the downward ejection of the sealing ring 17 by the clamping sleeve 4. As an improvement, a support member is also provided on the lower side of the positioning block 14. The support member supports and maintains the position of the positioning block 14. When the elongated channel 2 of the target component 1 is a blind hole, the support member is supported between the positioning block 14 and the bottom of the elongated channel 2. When the elongated channel 2 of the target component 1 is a through hole, the support member extends into the elongated channel 2 from the lower end opening to support the positioning block 14. As a preferred embodiment, the positioning block 14 and the support member are fixedly connected by a threaded connection structure. The relative position between the positioning block 14 and the support member can be adjusted using the threaded connection structure. In a specific implementation, a threaded connection hole is provided on the positioning block 14, and an external threaded portion is provided on the support member that is threadedly connected to the threaded connection hole.

[0029] The present invention also proposes a sealing ring assembly method, which uses the above-mentioned sealing ring assembly fixture and includes the following steps: clamping the sealing ring 17 to be installed in the clamping groove 8, installing the positioning block 14 to the sealing ring mounting groove 3 of the elongated channel 2 of the target component 1, keeping the upper side of the positioning block 14 flush with the lower groove wall of the sealing ring mounting groove 3, supporting the lower end of the limiting member downward on the positioning block 14, pushing the clamping sleeve 4 downward, and using the clamping sleeve 4 to push the sealing ring 17 to be installed downward out of the clamping groove 8, so that the sealing ring 17 to be installed falls into the sealing ring mounting groove 3 of the elongated channel 2 of the target component 1.

[0030] Furthermore, the sealing ring assembly method also includes the following steps: adjusting the position of the limiting member so that when the lower end of the limiting member is supported downward on the positioning block 14, the lower end face of the mandrel 7 is flush with the upper groove wall of the sealing ring mounting groove 3, which is conducive to the sealing ring 17 to be installed falling smoothly into the sealing ring mounting groove 3.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics incorporated in that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0032] In the description of this application, it should be understood that the terms "upper," "lower," etc., indicate orientation based on the appendix. Figure 1The coordinate system used in this application is for the purpose of facilitating and simplifying the description, and is not intended to 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, it should not be construed as a limitation of this application.

Claims

1. A sealing ring assembly fixture, characterized in that, Includes mandrel, clamping sleeve, and limiting components. The lower end of the mandrel is provided with a clamping groove for clamping the sealing ring to be installed, and the opening of the clamping groove is facing downwards. The upper end of the limiting member extends into the clamping groove and is fixedly connected to the mandrel, while the lower end of the limiting member extends downward from the lower end face of the mandrel. The limiting member and the two groove walls of the clamping groove each have a first gap for the sealing ring to be installed to be inserted. The clamping sleeve is fitted around the mandrel, and the clamping sleeve can push the sealing ring to be installed, which is held in the clamping groove, downward out of the clamping groove; The bottom surface of the clamping groove is an inclined surface that is inclined along the length direction of the clamping groove; The deep end of the clamping groove penetrates the circumferential surface of the mandrel; The depth of the shallow end of the clamping groove is 0. It also includes a positioning block for supporting the seal to be installed upwards as the clamping sleeve pushes the seal to be installed downwards; During the installation of the sealing ring, the lower end of the limiting component is supported on the positioning block. The upper side of the positioning block and the lower end face of the mandrel define a second gap for the sealing ring to be installed to smoothly return to its original shape. The second gap can guide the sealing ring to be installed into the sealing ring installation groove of the narrow channel.

2. The sealing ring assembly fixture according to claim 1, characterized in that, The limiting component is a limiting screw, and a threaded hole is provided at the bottom surface of the clamping groove, and the limiting screw is threadedly engaged with the threaded hole.

3. The sealing ring assembly fixture according to claim 1, characterized in that, The mandrel includes a mandrel body and an outer flange disposed at the lower end of the mandrel body. The inner diameter of the clamping sleeve is smaller than the outer diameter of the outer flange. The lower end of the clamping sleeve is provided with a groove for engaging with the outer flange.

4. The sealing ring assembly fixture according to claim 1, characterized in that, The upper section of the mandrel is provided with an external thread, and a clamping nut for pushing the clamping sleeve downward is threadedly connected to the external thread.

5. The sealing ring assembly fixture according to claim 4, characterized in that, A clamping block is fitted around the mandrel, and the clamping block is positioned between the clamping nut and the clamping sleeve. The outer diameter of the clamping block is larger than the outer diameter of the clamping sleeve.

6. A method for assembling a sealing ring, characterized in that, The sealing ring assembly fixture according to claim 1 includes the following steps: clamping the sealing ring to be installed in the clamping groove, installing the positioning block to the sealing ring mounting groove of the elongated channel, keeping the upper side of the positioning block flush with the lower wall of the sealing ring mounting groove, supporting the lower end of the limiting member downward on the positioning block, pushing the clamping sleeve downward, and using the clamping sleeve to push the sealing ring to be installed downward out of the clamping groove, so that the sealing ring to be installed falls into the sealing ring mounting groove of the elongated channel.

Images