Snap ring structure

Abstract

The utility model discloses a clamping ring structure, belongs to the technical field of pipeline connecting pieces, and solves the problem that an existing steel belt type hoop is inconvenient to assemble and disassemble. The device comprises an assembling screw rod, a locking nut and a stainless steel band with an opening, a rotating shaft is rotationally installed in the open end of the stainless steel band, a plurality of V-shaped lining plates arranged at intervals are arranged on the inner wall of the stainless steel band, and one end of the assembling screw rod penetrates through the stainless steel band to be detachably connected with one rotating shaft; one end of the assembly screw rod is connected with the stainless steel band, the other end of the assembly screw rod penetrates through the stainless steel band and the other rotating shaft and is in threaded connection with the locking nut, the assembly screw rod between the stainless steel band and the locking nut is movably sleeved with a T-shaped sleeve, and the assembly screw rod between the T-shaped sleeve and the locking nut is further movably sleeved with a pressing sleeve. The V-shaped lining plate is a casting piece or a forging piece. According to the clamping ring structure, the structural strength can be effectively improved, the service life is prolonged, and meanwhile disassembly and assembly are further facilitated.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connector technology, and more specifically, it relates to a retaining ring structure. Background Technology

[0002] A retaining ring, also known as a clamp, is a connector used to connect two pipes and is commonly found in engines. Currently, commonly used retaining rings are made of steel strip or cast iron.

[0003] like Figure 1 As shown, existing steel strip clamps are mainly assembled from stainless steel strips 1 (commonly 1-1.5mm thick), V-shaped liners 2, assembly screws 3, and locking nuts 4. This type of clamp is used for connecting pipes, housings, and other components. It is compact, narrow, lightweight, easy to install and remove, and produced in a standardized manner with low cost, thus gaining widespread use. However, because the assembly screw 3 is welded to the corresponding shaft 5 of the stainless steel strip 1, when the opening of the stainless steel strip needs to be fully opened and removed from the pipe, the locking nut 4 must be completely loosened and detached from the assembly screw 3. From an operational perspective, this presents an inconvenience.

[0004] like Figure 2 As shown, the cast iron retaining ring is mainly composed of two symmetrical cast iron blanks 6 connected by a bolt and nut assembly 7. This structure has a large retaining ring size and large bolt specifications, and can use M8, M10 and above specifications. Therefore, it has a large tightening torque, good connection effect, and is not prone to loosening or air leakage. However, due to possible defects in the cast blanks and pipeline vibration, it may break. In addition, the retaining ring is large in size and requires a large space for installation and assembly, making it difficult to use in connection parts with tight installation space.

[0005] Therefore, there is an urgent need to design a new type of retaining ring structure to solve the above problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a retaining ring structure that can effectively improve structural strength, extend service life, and further facilitate disassembly and assembly.

[0007] The technical solution of this utility model is as follows: a retaining ring structure includes an assembly screw, a locking nut, and an open stainless steel strip. A rotating shaft is rotatably mounted inside the opening of each end of the stainless steel strip. Multiple spaced V-shaped liners are provided on the inner wall of the stainless steel strip. One end of the assembly screw passes through the stainless steel strip and is detachably connected to one of the rotating shafts. The other end passes through the stainless steel strip and another rotating shaft and is threadedly connected to the locking nut. A T-shaped sleeve is movably fitted on the assembly screw between the stainless steel strip and the locking nut. A pressure sleeve is also movably fitted on the assembly screw between the T-shaped sleeve and the locking nut. The V-shaped liners are castings or forgings.

[0008] As a further improvement, one of the shafts is provided with a threaded hole, and one end of the mounting screw is threadedly connected to the threaded hole.

[0009] Furthermore, the threaded hole is a blind hole structure.

[0010] Furthermore, the thread direction of one section of the assembly screw corresponding to the threaded hole is opposite to the thread direction of one section of the assembly screw corresponding to the lock nut.

[0011] Furthermore, a groove is provided between the two rotating shafts, the width of which is adapted to the width of the stainless steel strip, and the stainless steel strip is engaged in the groove.

[0012] Furthermore, the V-shaped liner is fixed to the stainless steel strip by welding.

[0013] Furthermore, the outer wall surface of the V-shaped liner is provided with a raised strip extending circumferentially thereon, and the inner wall surface of the stainless steel strip is provided with a groove extending circumferentially thereon. The size of the raised strip and the groove are adapted to each other, and the raised strip is engaged in the groove.

[0014] Furthermore, a V-groove is formed on the stainless steel strip surrounding the assembly screw.

[0015] Furthermore, the V-shaped liner is a carbon steel casting, a stainless steel casting, or a carbon steel forging.

[0016] Beneficial effects

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] 1. The snap ring structure of this utility model has a detachable connection between one end of the assembly screw and one of the rotating shafts. When it is necessary to fully open the opening of the stainless steel strip and remove it from the pipeline, it is only necessary to disconnect the connection between the assembly screw and one of the rotating shafts. There is no need to slowly unscrew the locking nut from the assembly screw, which further facilitates disassembly and assembly. At the same time, its V-shaped liner adopts the structure of casting or forging, which can effectively improve the structural strength and extend the service life.

[0019] 2. The retaining ring structure of this utility model has a locking nut that transmits the clamping force to the stainless steel strip through the pressure sleeve and T-shaped sleeve, so that the locking nut is away from the stainless steel strip, providing a larger operating space for the installation and removal of the retaining ring. For example, when tightening or loosening the retaining ring, it is convenient to turn the locking nut with a wrench. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of an existing steel band ring;

[0021] Figure 2 A three-dimensional structural diagram of an existing cast iron retaining ring;

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 4 This is a top view enlarged schematic diagram of one of the rotating shafts in this utility model;

[0024] Figure 5 This is an enlarged cross-sectional view of one of the rotating shafts in this utility model;

[0025] Figure 6 This is an enlarged cross-sectional view of the V-shaped liner and stainless steel strip in this utility model.

[0026] Among them: 1-stainless steel strip, 2-V-shaped liner, 3-assembly screw, 4-locking nut, 5-rotating shaft, 6-cast iron blank, 7-bolt and nut assembly, 8-T-shaped sleeve, 9-pressure sleeve, 10-threaded hole, 11-sunken groove, 12-protruding strip, 13-groove, 14-V-shaped groove. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0028] See Figure 3-6 This utility model discloses a retaining ring structure, comprising an assembly screw 3, a locking nut 4, and an open stainless steel strip 1. The stainless steel strip 1 is formed by bending stainless steel sheets, and its two ends are further bent and welded to form a cavity. A rotating shaft 5 is rotatably mounted inside the open end of the stainless steel strip 1, and the rotating shaft 5 is rotatably mounted in the cavity. Multiple spaced V-shaped liners 2 are provided on the inner wall of the stainless steel strip 1. One end of the assembly screw 3 passes through the stainless steel strip 1 and is detachably connected to one of the rotating shafts 5; the other end passes through the stainless steel strip 1 and the other rotating shaft 5 and is threadedly connected to the locking nut 4. Figure 3As shown, one of the rotating shafts 5 corresponds to the left rotating shaft 5, and the other rotating shaft 5 corresponds to the right rotating shaft 5. A T-shaped sleeve 8 is movably sleeved on the assembly screw 3 between the stainless steel strip 1 and the locking nut 4. A pressure sleeve 9 is also movably sleeved on the assembly screw 3 between the T-shaped sleeve 8 and the locking nut 4, i.e. Figure 3 As shown, the T-shaped sleeve 8 and the pressure sleeve 9 are sequentially fitted onto the assembly screw 3 from left to right. The locking nut 4 transmits the clamping force to the stainless steel strip 1 through the pressure sleeve 9 and the T-shaped sleeve 9, which makes the locking nut 4 away from the stainless steel strip 1, providing more operating space for the installation and removal of the retaining ring. For example, when tightening or loosening the retaining ring, it is convenient to turn the locking nut 4 with a wrench. The V-shaped liner 2 is a casting or forging part, that is, the V-shaped liner 2 is made by casting or forging process. Its V-shaped liner 2 adopts the structure of casting or forging, which can effectively improve the structural strength and extend the service life.

[0029] The snap ring structure of this utility model has a detachable connection between one end of the mounting screw 3 and one of the rotating shafts 5. When it is necessary to fully open the opening of the stainless steel strip 1 and remove it from the pipeline, it is only necessary to disconnect the connection between the mounting screw 3 and one of the rotating shafts 5. There is no need to slowly unscrew the locking nut 4 from the mounting screw 3, which further facilitates disassembly and assembly.

[0030] Preferably, one of the rotating shafts 5 has a threaded hole 10, and one end of the mounting screw 3 is threadedly connected to the threaded hole 10. This threaded connection makes assembly and disassembly more convenient. In other embodiments, after one end of the mounting screw 3 passes through one of the rotating shafts 5, it can be limited by a pin. Disassembly is achieved by simply pulling out the pin. Furthermore, the threaded hole 10 is a blind hole structure. This blind hole structure limits the screwing depth of the mounting screw 3 and avoids interference between the mounting screw 3 and the stainless steel strip as it passes through one of the rotating shafts 5. Even further, the thread direction of one section of the mounting screw 3 corresponding to the threaded hole 10 is opposite to that of one section of the mounting screw 3 corresponding to the locking nut 4. That is, the thread directions at both ends of the mounting screw 3 are opposite. This thread structure facilitates assembly and prevents the mounting screw 3 from becoming loose relative to one of the rotating shafts 5 when the locking nut 4 is rotated.

[0031] Preferably, a groove 11 is provided between the two rotating shafts 5. The width of the groove 11 is adapted to the width of the stainless steel strip 1. The stainless steel strip 1 is engaged in the groove 11. The groove 11 is used to limit the axial position of the rotating shaft 5 to avoid the problem of the rotating shaft 5 becoming loose.

[0032] Preferably, the V-shaped liner 2 is fixed to the stainless steel strip 1 by welding, which facilitates manufacturing. Further, a raised strip 12 extending circumferentially is provided on the outer wall of the V-shaped liner 2, and the raised strip 12 and the V-shaped liner 2 are integrally formed. A groove 13 extending circumferentially is provided on the inner wall of the stainless steel strip 1, and the groove 13 can be obtained by stamping and bending. The dimensions of the raised strip 12 and the groove 13 are matched, and the raised strip 12 is engaged within the groove 13. Since the V-shaped liner 2 and the stainless steel strip 1 are fixed by welding, the V-shaped liner 2 is positioned by the cooperation of the raised strip 12 and the groove 13. This facilitates welding and further improves the connection strength, preventing axial displacement of the V-shaped liner 2. The positioning by the cooperation of the raised strip 12 and the groove 13 is particularly important when the V-shaped liner 2 and the stainless steel strip 1 are welded from two different materials.

[0033] Preferably, a V-groove 14 is provided on the stainless steel strip 1 surrounding the assembly screw 3 to avoid interference between the assembly screw 3 and the stainless steel strip 1 during the adjustment of the retaining ring tightness.

[0034] Preferably, the V-shaped liner 2 is a carbon steel casting, a stainless steel casting, or a carbon steel forging, which further improves the structural strength of the V-shaped liner 2.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A clasp structure comprising an assembling screw rod (3), a locking nut (4) and a stainless steel band (1) with an opening, a rotating shaft (5) is rotatably installed inside the opening end of the stainless steel band (1), the inner wall of the stainless steel band (1) is provided with a plurality of V-shaped lining plates (2) arranged at intervals, characterized in that, One end of the assembly screw (3) is detachably connected with one of the rotating shafts (5) through the stainless steel belt (1), and the other end is threaded through the stainless steel belt (1) and the other rotating shaft (5) and is screwed with the locking nut (4), a T-shaped sleeve (8) is movably sleeved on the assembly screw (3) between the stainless steel belt (1) and the locking nut (4), and a pressing sleeve (9) is movably sleeved on the assembly screw (3) between the T-shaped sleeve (8) and the locking nut (4); the V-shaped lining plate (2) is a cast or forged piece.

2. A clasp structure according to claim 1, wherein One of the rotating shafts (5) is provided with a threaded hole (10), and one end of the assembly screw (3) is screwed with the threaded hole (10).

3. A circlip structure according to claim 2, wherein The threaded hole (10) is a blind hole structure.

4. A circlip structure according to claim 2, wherein The threaded hole (10) corresponds to a section of the assembly screw (3) whose thread rotation direction is opposite to that of the locking nut (4).

5. The clasp structure of claim 1, wherein The two rotating shafts (5) are both provided with a sink (11) in the middle, the width of the sink (11) is matched with the width of the stainless steel belt (1), and the stainless steel belt (1) is clamped in the sink (11).

6. The clasp structure of claim 1, wherein The V-shaped lining plate (2) is fixed in the stainless steel belt (1) by welding.

7. A circlip structure according to claim 6, wherein The outer wall surface of the V-shaped lining plate (2) is provided with a protruding strip (12) extending along the circumference thereof, the inner wall surface of the stainless steel belt (1) is provided with a groove (13) extending along the circumference thereof, the size of the protruding strip (12) is matched with that of the groove (13), and the protruding strip (12) is clamped in the groove (13).

8. The clasp structure of claim 1, wherein The stainless steel belt (1) surrounding the assembly screw (3) is provided with a V-shaped groove (14).

9. A clasp structure according to any one of claims 1-8, wherein The V-shaped lining plate (2) is a carbon steel cast piece or a stainless steel cast piece or a carbon steel forged piece.

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