Bushing sealing structure

Abstract

The utility model discloses a bushing sealing structure which comprises two semicircular bushings which are symmetrically arranged and embedded with each other, the two semicircular bushings are embedded with each other to form a cylindrical bushing, the upper ends of the semicircular bushings extend outwards to form semicircular shoulder rings, and the lower ends of the semicircular bushings extend outwards to form semicircular shoulder rings. A semicircular sealing ring is arranged on the bottom face of the semicircular shoulder ring, a lug plate is fixedly connected to the side face of the semicircular shoulder ring, a counterbore for a bolt to penetrate through is formed in the lug plate, and the portion, located below the lug plate, of the bolt is sleeved with a spring. The bushing sealing structure can be mounted on line without dismounting a shaft matched with the bushing sealing structure, and is convenient to operate.

Description

Technical Field

[0001] The utility model relates to the field of bushings, in particular to a bushing sealing structure. Background Art

[0002] Bushings are used outside mechanical parts to achieve sealing, wear protection and other functions. They refer to rings that act as gaskets. In the field of valve applications, bushings are inside the valve cover and are generally made of corrosion-resistant materials such as polytetrafluoroethylene or graphite for sealing.

[0003] Chinese patent CN201822256890.9 discloses a sealing bushing, comprising a bushing body, the outer circle of the bushing body is formed with an outer circle segment that cooperates with an oil seal, and the inner side of the bushing body is formed with an annular groove for installing a sealing ring.

[0004] The bushing body in the sealing bushing is a fully circular structure. When the bushing is installed in cooperation with the shaft, the shaft needs to be disassembled and then inserted into the bushing body. It cannot be directly installed on the shaft, and the operation efficiency is low. Utility Model Content

[0005] The utility model aims to provide a bushing sealing structure, which can be installed online without disassembling a shaft matched with the bushing sealing structure, and is easy to operate.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a bushing sealing structure, including two semicircular bushings that are symmetrically arranged and embedded with each other, the two semicircular bushings are embedded with each other to form a cylindrical bushing, the upper end of the semicircular bushing is extended to form a semicircular shoulder ring, the bottom surface of the semicircular shoulder ring is provided with a semicircular sealing ring, the side of the semicircular shoulder ring is fixedly connected with an ear plate, the ear plate is provided with a countersunk hole for passing a bolt, and a spring is provided on the bolt below the ear plate.

[0007] Preferably, a plurality of sealing strips extending vertically are arranged on the side end surface of one of the semicircular bushings, and a groove for engaging the sealing strips is arranged on the side end surface of the other semicircular bushing.

[0008] Preferably, the end faces of the two semicircular sealing rings are interference fit with each other.

[0009] Preferably, the cap end of the bolt is provided with a hexagonal hole.

[0010] Preferably, a cylinder for compressing the spring is provided below the ear plate.

[0011] Preferably, the outer edge of the lower end of the cylinder is provided with an oblique chamfer.

[0012] According to the above technical scheme, the utility model provides a bushing sealing structure, comprising two semicircular bushings symmetrically arranged and embedded with each other, the two semicircular bushings are embedded with each other to form a cylindrical bushing, a semicircular shoulder ring is formed on the outer extension of the upper end of the semicircular bushing, a semicircular sealing ring is arranged on the bottom surface of the semicircular shoulder ring, an ear plate is fixedly connected to the side of the semicircular shoulder ring, a countersunk hole for passing a bolt is arranged on the ear plate, and a spring is sleeved on the bolt below the ear plate.

[0013] The usage and beneficial effects of the bushing sealing structure are as follows: when assembling the bushing sealing structure, first engage the two semicircular bushings from both sides of the shaft together to form a cylindrical bushing, then slide the cylindrical bushing downward into the groove body of the mounting piece, and then screw it onto the mounting piece after passing the bolt through the countersunk hole. A circle of sealing rings is formed by the docking of the two semicircular sealing rings, which seals the bushing sealing structure. Through the setting of the spring, the spring is squeezed under the ear plate after the bolt is tightened. When the bolt is removed, the spring can push the cylindrical bushing outward for a distance, which is convenient for disassembly.

[0014] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the bushing sealing structure;

[0017] Figure 2 It is a top view of a preferred embodiment of the bushing sealing structure;

[0018] Figure 3 yes Figure 2 AA cross-sectional structural diagram;

[0019] Figure 4 It is a schematic diagram of a structure in which half of a bushing seal structure is installed in a mounting part;

[0020] Figure 5 yes Figure 4 A schematic diagram of a top view structure;

[0021] Figure 6 yes Figure 5 BB cross-sectional structure diagram;

[0022] Figure 7 It is a structural schematic diagram of a preferred embodiment of a semicircular bushing.

[0023] Description of Reference Numerals

[0024] 1-semicircular bushing; 2-semicircular shoulder ring; 3-bolt; 4-spring; 5-cylinder; 6-ear plate; 7-hexagonal hole; 8-sealing strip; 9-slot; 10-semicircular sealing ring; 11-mounting piece; 12-mounting hole; 13-side groove; 14-shoulder surface; 15-sealing groove; 16-screw hole; 17-semicircular O-ring. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0026] In the present utility model, unless otherwise stated, directional words contained in terms such as "up, down, left, right, front, back, inside, outside" merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0027] See also Figure 1-3 The bushing sealing structure shown includes two semicircular bushings 1 which are symmetrically arranged and embedded with each other. The two semicircular bushings 1 are embedded with each other to form a cylindrical bushing. A semicircular shoulder ring 2 is formed on the outer side of the upper end of the semicircular bushing 1. A semicircular sealing ring 10 is provided on the bottom surface of the semicircular shoulder ring 2. An ear plate 6 is fixed to the side of the semicircular shoulder ring 2. A countersunk hole for passing a bolt 3 is provided on the ear plate 6. A spring 4 is sleeved on the bolt 3 below the ear plate 6.

[0028] Through the implementation of the above technical solution, when assembling the bushing sealing structure, first, the two semicircular bushings 1 are clamped together from both sides of the shaft to form a cylindrical bushing, and then the cylindrical bushing is slid downward into the groove body of the mounting member 11, and then the bolt 3 is passed through the countersunk hole and screwed to the mounting member 11. A circle of sealing rings is formed by the docking of the two semicircular sealing rings 10, which plays a sealing role for the bushing sealing structure. Through the setting of the spring 4, the spring 4 is squeezed under the ear plate 6 after the bolt 3 is tightened. When the bolt 3 is removed, the spring 4 can push the cylindrical bushing outward for a distance, or provide a certain external thrust, which is convenient for disassembly.

[0029] In this embodiment, in order to further provide a sealing engagement method between the semicircular bushings 1, a plurality of vertically extending sealing strips 8 are provided on the side end face of one of the semicircular bushings 1, and a groove 9 for engaging the sealing strips 8 is provided on the side end face of the other semicircular bushing 1.

[0030] During assembly, multiple sealing strips 8 and multiple slots 9 are engaged one by one. On the one hand, the two semicircular bushings 1 can be engaged and connected, and on the other hand, the sealing effect can be improved through the interference fit between the sealing strips 8 and the slots 9.

[0031] In this embodiment, in order to further improve the sealing effect of the two semicircular sealing rings 10, the end faces of the two semicircular sealing rings 10 are interference fit between each other.

[0032] In this embodiment, the cap end of the bolt 3 is provided with a hexagonal hole 7. This arrangement makes it easy to tighten or loosen the bolt 3 using an external hexagonal screwdriver.

[0033] In this embodiment, a cylinder 5 for pressing the spring 4 is arranged below the ear plate 6. Through such an arrangement, the thickness of the portion in contact with the spring 4 is increased, thereby improving the compressive strength.

[0034] In this embodiment, the outer edge of the lower end of the cylinder 5 is provided with an oblique chamfer. Through such a configuration, the cylinder 5 is more easily inserted into the mounting hole 12 corresponding to the mounting member 11.

[0035] See also Figure 4-6 In an assembly scheme shown, a through hole for inserting a cylindrical bushing is provided on the mounting member 11, a circular shoulder surface 14 for carrying two semicircular shoulder rings 2 is provided at the upper end of the through hole, side grooves 13 for carrying ear plates 6 are provided on both sides of the shoulder surface 14, a mounting hole 12 for inserting a cylinder 5 is provided on the bottom surface of the side groove 13, and a screw hole 16 cooperating with the bolt 3 is provided on the bottom surface of the mounting hole 12, and the spring 4 is also installed in the mounting hole 12 and sleeved outside the bolt 3.

[0036] See also Figure 7 When necessary, the semicircular bushing 1 can also be provided with a semicircular inner groove or a semicircular outer groove on the inner side and / or the outer side for embedding the semicircular O-ring. After assembly, the semicircular O-rings on both sides are butted against each other to form a seal with the shaft and the inner wall of the through hole.

[0037] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0039] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A bushing sealing structure, characterized in that: The bushing sealing structure comprises two semicircular bushings (1) which are symmetrically arranged and interlocked with each other, the two semicircular bushings (1) are interlocked with each other to form a cylindrical bushing, a semicircular shoulder ring (2) is formed on the upper end of the semicircular bushing (1), a semicircular sealing ring (10) is arranged on the bottom surface of the semicircular shoulder ring (2), an ear plate (6) is fixedly connected to the side of the semicircular shoulder ring (2), a countersunk hole for passing a bolt (3) is arranged on the ear plate (6), and a spring (4) is sleeved on the bolt (3) below the ear plate (6).

2. The bushing sealing structure according to claim 1, characterized in that: A plurality of sealing strips (8) extending vertically are arranged on the side end surface of one of the semicircular bushings (1), and a groove (9) for engaging the sealing strips (8) is arranged on the side end surface of the other semicircular bushing (1).

3. The bushing sealing structure according to claim 1, characterized in that: The end faces of the two semicircular sealing rings (10) are interference-fitted with each other.

4. The bushing sealing structure according to claim 1, characterized in that: The cap end of the bolt (3) is provided with a hexagonal hole (7).

5. The bushing sealing structure according to claim 1, characterized in that: A cylinder (5) for pressing the spring (4) is arranged below the ear plate (6).

6. The bushing sealing structure according to claim 5, characterized in that: The outer edge of the lower end of the cylinder (5) is provided with an oblique chamfer.

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