Coupling and coupling king bolt oil leakage prevention structure

Abstract

The utility model discloses a coupling and a coupling kingbolt oil leakage prevention structure, and relates to the technical field of mechanical transmission, the coupling kingbolt oil leakage prevention structure comprises a first sealing ring and a second sealing ring, the first sealing ring is installed between a cake-shaped body and a side plate, and the second sealing ring is installed between the cake-shaped body and the side plate. The first sealing ring is used for sealing the gap between the end face of the cake-shaped body and the inner end face of the side plate so as to seal the head of the coupling main bolt, and the second sealing ring is installed between the cake-shaped body and the flange and used for sealing the gap between the end face of the cake-shaped body and the inner end face of the flange so as to seal the thread portion of the coupling main bolt. The first sealing ring and the second sealing ring respectively seal gaps between the cake-shaped body and the side plate and between the cake-shaped body and the flange, lubricating oil is effectively prevented from leaking from the gaps, the sealing effect is good, the sealing quality is stable and reliable, and the sealing efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and more specifically, to a leak-proof structure for the main bolt of a coupling. Furthermore, this utility model also provides a coupling including the aforementioned leak-proof structure for the main bolt. Background Technology

[0002] The coupling of the reed damping coupling shock absorber mainly includes a splined shaft 40, a disc-shaped body 30, and side plates 10 and flanges 20 at both ends. The side plates 10, disc-shaped body 20 and flanges 30 are connected by coupling main bolts 50.

[0003] In the existing technology, the sealing method for the main bolt 50 of the coupling involves applying thread-fastening red adhesive to the elastic washer at the head of the main bolt 50 and thread-fastening blue adhesive to the threaded portion of the main bolt 50. After bonding, the mixture is left to cure, and an airtightness test is performed after curing to ensure there are no leaks before the product leaves the factory. However, due to limitations in the quality of the thread-fastening adhesive and the level of operational standard of the personnel applying the adhesive, the above sealing method still carries the risk of oil leakage from the main bolt 50 of the coupling. Figure 1 As shown.

[0004] In summary, how to provide an efficient and reliable seal for the main bolts of the coupling to prevent lubricating oil leakage is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an oil leakage prevention structure for the main bolt of the coupling. The first sealing ring and the second sealing ring respectively seal the gap between the disc-shaped body and the side plate and the flange, effectively preventing the lubricating oil from leaking out. The sealing effect is good, the sealing quality is stable and reliable, and the sealing efficiency is high.

[0006] In addition, this utility model also provides a coupling that includes the above-mentioned anti-oil-leakage structure for the main bolt of the coupling.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An oil-leakage prevention structure for the main bolt of a coupling includes a first sealing ring and a second sealing ring. The first sealing ring is installed between a disc-shaped body and a side plate, and is used to seal the gap between the end face of the disc-shaped body and the inner end face of the side plate to seal the head of the main bolt of the coupling. The second sealing ring is installed between the disc-shaped body and a flange, and is used to seal the gap between the end face of the disc-shaped body and the inner end face of the flange to seal the threaded portion of the main bolt of the coupling.

[0009] Preferably, one end of the disc-shaped body is provided with a first sealing groove for installing the first sealing ring, and the other end of the disc-shaped body is provided with a second sealing groove for installing the second sealing ring.

[0010] Preferably, the inner end face of the side plate is provided with a third sealing groove for installing the first sealing ring, and the cross-sectional dimensions of the third sealing groove are the same as those of the first sealing groove.

[0011] The inner end face of the flange is provided with a fourth sealing groove for installing the second sealing ring, and the cross-sectional dimensions of the fourth sealing groove are the same as those of the second sealing groove.

[0012] Preferably, the depth of the third sealing groove is less than the depth of the first sealing groove, and the depth of the fourth sealing groove is less than the depth of the second sealing groove.

[0013] Preferably, the axis of both the first sealing ring and the axis of the second sealing ring are coaxial with the axis of the main bolt of the coupling.

[0014] Preferably, the cross-sectional dimensions of the first sealing ring and the second sealing ring are the same, and the thickness of the first sealing ring and the second sealing ring are the same.

[0015] Preferably, it further includes a first support ring and a second support ring, wherein the first support ring is sleeved between the outer circumferential surface of the main bolt of the coupling and the inner circumferential surface of the first sealing ring, and the second support ring is sleeved between the outer circumferential surface of the main bolt of the coupling and the inner circumferential surface of the second sealing ring.

[0016] Preferably, the first support ring and the first sealing ring are an integral structure, and the second support ring and the second sealing ring are an integral structure.

[0017] Preferably, both the first support ring and the second support ring include metal support rings, and the outer surface of the metal support rings is provided with an anti-rust layer.

[0018] A coupling includes a coupling body and an oil-leakage prevention structure for the main bolt of the coupling as described in any one of the above claims.

[0019] The oil leakage prevention structure for the main bolt of the coupling provided by this utility model has a first sealing ring that seals the gap between the end face of the disc-shaped body and the inner end face of the side plate, thereby preventing lubricating oil from leaking through the gap between the head of the main bolt of the coupling and the first bolt hole of the side plate, and then through the gap between the end face of the disc-shaped body and the inner end face of the side plate; the second sealing ring seals the gap between the end face of the disc-shaped body and the inner end face of the flange, thereby preventing lubricating oil from leaking through the gap between the threaded part of the main bolt of the coupling and the second bolt hole of the flange, and then through the gap between the end face of the disc-shaped body and the inner end face of the flange.

[0020] Therefore, the oil leakage prevention structure for the main bolt of the coupling provided by this utility model effectively prevents lubricating oil from leaking through the gap between the disc-shaped body, the side plate, and the flange by sealing the gap between the first sealing ring and the second sealing ring respectively, and has a good sealing effect.

[0021] Furthermore, compared to existing thread-fastening adhesive sealants, this method eliminates interference from human factors and adhesive quality on the sealing effect, ensuring stable and reliable sealing quality. It also saves the original waiting time for adhesive to solidify, allowing for direct airtightness testing after assembly, thus improving sealing efficiency and production efficiency.

[0022] In addition, this utility model also provides a coupling that includes the above-mentioned anti-oil-leakage structure for the main bolt of the coupling. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 A schematic diagram of the main bolt sealing structure of the coupling provided by the prior art;

[0025] Figure 2 This is a schematic diagram of a specific embodiment of the anti-oil-leakage structure for the main bolt of the coupling provided by this utility model.

[0026] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0027] Figure 4 A schematic diagram of a specific embodiment of the oil leakage prevention structure for the main bolt of the coupling;

[0028] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0029] Figure 6 A schematic diagram of a specific embodiment three of the anti-oil-leakage structure for the main bolt of the coupling.

[0030] Figure 7 for Figure 6 A magnified view of a portion of the image.

[0031] Figures 1-7 middle:

[0032] 10-Side plate; 101-Third sealing groove; 20-Disc-shaped body; 201-First sealing groove; 202-Second sealing groove; 30-Flange; 301-Fourth sealing groove; 40-Splined shaft; 50-Main bolt of coupling; 1-First sealing ring; 2-Second sealing ring; 3-First support ring; 4-Second support ring. Detailed Implementation

[0033] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The core of this utility model is to provide an oil-leakage prevention structure for the main bolt of a coupling. The first sealing ring and the second sealing ring respectively seal the gap between the disc-shaped body, the side plate, and the flange, effectively preventing the lubricating oil from leaking out. The sealing effect is good, the sealing quality is stable and reliable, and the sealing efficiency is high.

[0035] In addition, this utility model also provides a coupling that includes the above-mentioned anti-oil-leakage structure for the main bolt of the coupling.

[0036] The oil leakage prevention structure for the main bolt of the coupling provided by this utility model includes a first sealing ring 1 and a second sealing ring 2. The first sealing ring 1 is installed between the disc-shaped body 20 and the side plate 10. The first sealing ring 1 is used to seal the gap between the end face of the disc-shaped body 20 and the inner end face of the side plate 10 so as to seal the head of the main bolt 50 of the coupling. The second sealing ring 2 is installed between the disc-shaped body 20 and the flange 30. The second sealing ring 2 is used to seal the gap between the end face of the disc-shaped body 20 and the inner end face of the flange 30 so as to seal the threaded part of the main bolt 50 of the coupling.

[0037] Please refer to Figure 2 and Figure 3 The first sealing ring 1 is installed between the disc-shaped body 20 and the side plate 10 to seal the gap between the end face of the disc-shaped body 20 and the inner end face of the side plate 10, thereby blocking the leakage path between the disc-shaped body 20 and the side plate 10 by using the first sealing ring 1.

[0038] The second sealing ring 2 is installed between the disc-shaped body 20 and the flange 30 to seal the gap between the end face of the disc-shaped body 20 and the inner end face of the flange 30, thereby blocking the leakage path between the disc-shaped body 20 and the flange 30.

[0039] Considering that the first sealing ring 1 and the second sealing ring 2 are in long-term contact with lubricating oil, both need to have good oil resistance, such as nitrile rubber sealing rings, fluororubber sealing rings and polytetrafluoroethylene sealing rings;

[0040] The specific materials, structure, size, and location of the first sealing ring 1 and the second sealing ring 2 are determined by verification and calculation based on the structure and size of the disc-shaped body 20 in actual production, especially the distribution of bolt mounting holes, in order to meet the structural strength requirements of each part of the coupling.

[0041] In this embodiment, the gaps between the disc-shaped body 20, the side plate 10, and the flange 30 are sealed by the first sealing ring 1 and the second sealing ring 2, respectively, effectively preventing the lubricating oil from leaking out and achieving a good sealing effect.

[0042] Furthermore, compared to existing thread-fastening adhesive sealants, this method eliminates interference from human factors and adhesive quality on the sealing effect, ensuring stable and reliable sealing quality. It also saves the original waiting time for adhesive to solidify, allowing for direct airtightness testing after assembly, thus improving sealing efficiency and production efficiency.

[0043] Based on the above embodiments, in order to facilitate the processing of the coupling, one end of the disc-shaped body 20 can be provided with a first sealing groove 201 for installing the first sealing ring 1, and the other end of the disc-shaped body 20 can be provided with a second sealing groove 202 for installing the second sealing ring 2.

[0044] Please refer to Figure 3 The first sealing groove 201 and the second sealing groove 202 are respectively provided on the opposite end faces of the disc-shaped body 20. Only the structure of the disc-shaped body 20 of the coupling needs to be adjusted, and the processing and modification costs are low. It should be noted that the depth of the first sealing groove 201 is less than the thickness of the first sealing ring 1, and the depth of the second sealing groove 202 is less than the thickness of the second sealing ring 2.

[0045] Considering that in actual production, the bolt mounting holes are located in the middle block of the disc-shaped body 20, and the distance between the bolt mounting holes and the outer edge of the middle block is relatively close, in order to avoid the first sealing groove 201 or the second sealing groove 202 affecting the structural strength of the disc-shaped body 20, it is preferable to set the axis of the first sealing ring 1 and the axis of the second sealing ring 2 to be coaxial with the axis of the main bolt 50 of the coupling.

[0046] Preferably, in order to reduce the number of parts, the cross-sectional dimensions of the first sealing ring 1 and the second sealing ring 2 can be set to be the same, and the thickness of the first sealing ring 1 and the second sealing ring 2 can be the same. By setting the first sealing ring 1 and the second sealing ring 2 to be sealing rings of the same specification, the number of parts can be reduced and subsequent maintenance operations can be facilitated.

[0047] Based on the above embodiments, in order to improve the sealing effect, the inner end face of the side plate 10 can be provided with a third sealing groove 101 for installing the first sealing ring 1, and the cross-sectional dimensions of the third sealing groove 101 are the same as the cross-sectional dimensions of the first sealing groove 201.

[0048] The inner end face of the flange 30 is provided with a fourth sealing groove 301 for installing the second sealing ring 2. The cross-sectional dimensions of the fourth sealing groove 301 are the same as those of the second sealing groove 202.

[0049] Please refer to Figure 6 and Figure 7 The first sealing ring 1 is installed in both the first sealing groove 201 and the third sealing groove 101. Compared with the first sealing ring 1 being installed only in the first sealing groove 201, the sealing area of ​​the first sealing ring 1 is increased and the sealing path is lengthened, which effectively improves the sealing effect of the first sealing ring 1.

[0050] The second sealing ring 2 is installed in both the second sealing groove 202 and the fourth sealing groove 301. Compared with the second sealing ring 2 being installed only in the second sealing groove 202, the sealing area of ​​the second sealing ring 2 is increased and the sealing path is lengthened, which effectively improves the sealing effect of the second sealing ring 2.

[0051] Preferably, considering that the thickness of the inner side plate 10 and flange 30 of the coupling is usually less than the thickness of the disc 20, the depth of the third sealing groove 101 can be set to be less than the depth of the first sealing groove 201, and the depth of the fourth sealing groove 301 can be less than the depth of the second sealing groove 202, so that the first sealing ring 1 is mainly installed in the first sealing groove 201 and the second sealing ring 2 is mainly installed in the second sealing groove 202, so as to avoid the groove being too deep and affecting the structural strength and function of the side plate 10 and flange 30 themselves.

[0052] Based on the above embodiments, it also includes a first support ring 3 and a second support ring 4. The first support ring 3 is sleeved between the outer peripheral surface of the main bolt 50 of the coupling and the inner peripheral surface of the first sealing ring 1, and the second support ring 4 is sleeved between the outer peripheral surface of the main bolt 50 of the coupling and the inner peripheral surface of the second sealing ring 2.

[0053] Please refer to Figure 4 and Figure 5 The first support ring 3 is used to support the inner circumferential surface of the first sealing ring 1, and the second support ring 4 is used to support the inner circumferential surface of the second sealing ring 2. The specific structure and dimensions of the first support ring 3 and the second support ring 4 need to be determined according to the actual production needs, such as the outer diameter of the coupling main bolt 50, the inner diameter of the first sealing ring 1 and the inner diameter of the second sealing ring 2.

[0054] Preferably, in order to provide sufficient support capacity for the support ring, both the first support ring 3 and the second support ring 4 may be metal support rings. Specifically, the metal support rings may be carbon steel rings, stainless steel rings, etc. The outer surface of the metal support rings is preferably provided with an anti-rust layer to improve the corrosion resistance and service life of the metal support rings.

[0055] In this embodiment, by setting the first support ring 3 and the second support ring 4, the first sealing ring 1 and the second sealing ring 2 can be effectively supported, and the sealing groove can be replaced by a countersunk hole that communicates with the bolt mounting hole, making the processing more difficult.

[0056] Preferably, the first support ring 3 and the first sealing ring 1 can be set as an integral structure, and the second support ring 4 and the second sealing ring 2 can be set as an integral structure. The assembly process of the two can be further simplified by the integrated design of the support ring and the sealing ring.

[0057] In addition to the aforementioned anti-leakage structure for the main bolt of the coupling, this utility model also provides a coupling that includes the anti-leakage structure for the main bolt of the coupling disclosed in the above embodiments. The coupling can be applied to products such as spring elastic damping couplings and shock absorbers. The coupling includes a coupling body and the anti-leakage structure for the main bolt of the coupling disclosed in the above embodiments. The coupling body includes a side plate 10, a disc-shaped body 20, a flange 30, and a spline shaft 40. The side plate 10 and the flange 30 are respectively located at both ends of the disc-shaped body 20 through the coupling main bolt 50. The disc-shaped body 20 is connected to the spline shaft 40. For the structure of each part, such as the side plate 10, the disc-shaped body 20, the flange 40, the spline shaft 40, and the coupling main bolt 50, please refer to the prior art, which will not be repeated here.

[0058] It should be noted that the first sealing ring 1 and the second sealing ring 2, the first bolt hole and the second bolt hole, and the first sealing groove 201, the second sealing groove 202, the third sealing groove 101 and the fourth sealing groove 301 mentioned in this application are only used to distinguish the different positions and do not contain any limitation on the order.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The above provides a detailed description of the coupling and the oil-leakage-proof structure for the main bolt of the coupling provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A joint main bolt oil leakage preventing structure characterized by comprising: The first sealing ring (1) is installed between the pie body (20) and the side plate (10), and is used to seal the gap between the end face of the pie body (20) and the inner end face of the side plate (10) so as to seal the head of the coupling main bolt (50); the second sealing ring (2) is installed between the pie body (20) and the flange (30), and is used to seal the gap between the end face of the pie body (20) and the inner end face of the flange (30) so as to seal the threaded part of the coupling main bolt (50).

2. The oil leakage preventing structure for a coupling main bolt according to claim 1, characterized in that, One end of the pie body (20) is provided with a first sealing groove (201) for installing the first sealing ring (1), and the other end of the pie body (20) is provided with a second sealing groove (202) for installing the second sealing ring (2).

3. The oil leakage preventing structure for a coupling main bolt according to claim 2, characterized in that, The inner end face of the side plate (10) is provided with a third sealing groove (101) for installing the first sealing ring (1), and the cross-sectional size of the third sealing groove (101) is the same as that of the first sealing groove (201); The inner end face of the flange (30) is provided with a fourth sealing groove (301) for installing the second sealing ring (2), and the cross-sectional size of the fourth sealing groove (301) is the same as that of the second sealing groove (202).

4. The oil leakage preventing structure for a coupling main bolt according to claim 3, characterized in that, The depth of the third sealing groove (101) is smaller than that of the first sealing groove (201), and the depth of the fourth sealing groove (301) is smaller than that of the second sealing groove (202).

5. The oil leakage preventing structure for a coupling main bolt according to claim 1, characterized in that, The axis of the first sealing ring (1) and the axis of the second sealing ring (2) are coaxially arranged with the axis of the coupling main bolt (50).

6. The oil leakage preventing structure for a coupling main bolt according to claim 4, characterized in that, The cross-sectional size of the first sealing ring (1) is the same as that of the second sealing ring (2), and the thickness of the first sealing ring (1) is the same as that of the second sealing ring (2).

7. The oil leakage preventing structure for a coupling main bolt according to any one of claims 1 to 6, characterized in that, The first support ring (3) is sleeved between the outer peripheral surface of the coupling main bolt (50) and the inner peripheral surface of the first sealing ring (1), and the second support ring (4) is sleeved between the outer peripheral surface of the coupling main bolt (50) and the inner peripheral surface of the second sealing ring (2).

8. The oil leakage preventing structure for a coupling main bolt according to claim 7, characterized in that, The first support ring (3) and the first sealing ring (1) are in an integrated structure, and the second support ring (4) and the second sealing ring (2) are in an integrated structure.

9. The oil leakage preventing structure for a coupling main bolt according to claim 7, characterized in that, The first support ring (3) and the second support ring (4) both comprise a metal support ring, and the outer surface of the metal support ring is provided with an anti-rust layer.

10. A coupling characterized by, The coupling main bolt leak-proof structure comprises a coupling main body and the coupling main bolt leak-proof structure according to any one of claims 1-9.

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