Modular seal ring

Abstract

The application provides a modular sealing ring, comprising a plurality of sealing units (1), each of the sealing units (1) is connected in a ring shape in a circumferential direction, the sealing unit (1) is an elastic unit, and the joint surface between each of the sealing units (1) is an arc surface or a stepped surface or a combination of the arc surface and the stepped surface. The support of different tonnages only needs to increase or reduce the number of sealing units according to the size of the rubber pad diameter to meet the design, the sealing units can be mass-produced, and the production cost of the support is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge bearing, in particular to a sealing ring. BACKGROUND

[0002] The bridge is generally composed of superstructure, substructure, bearing and auxiliary structure. The bridge bearing is an important component connecting and constraining the superstructure and substructure of the bridge, and is an indispensable part for the load bearing of the bridge. The bridge bearing structure is various, among which the pot-type rubber bearing is the most common one with excellent shock absorption effect. The inner sealing ring and rubber pad in the pot-type rubber bearing are important components, and the selection of their materials and structures affects the quality of the rubber bearing and further affects the service life of the bridge.

[0003] The existing sealing ring of the pot-type rubber bearing mainly adopts brass. There is a cumulative slip between the pot wall and the sealing ring due to the relative vibration, and the service mileage of the brass sealing ring is not long, thereby affecting the sealing effect and service life, and the sealing ring cannot be well applied to the bearing with large angle and frequent displacement.

[0004] The existing sealing ring of the pot-type rubber bearing is composed of multiple open rings, and the diameter, cross-sectional size and number of the brass sealing ring used for different rubber pad diameters are different. The brass sealing ring with large cross-sectional size needs to adopt a slotted structure. At present, the design range of the pot-type rubber bearing has been expanded to 100t-10000t, and the corresponding rubber pad diameter is 200mm-1500mm. The diversity of such size makes it difficult to realize batch production of the sealing ring, and the production organization is not convenient, the processing precision is difficult to guarantee, the production cost is high, and the assembly is troublesome. SUMMARY

[0005] The present application provides a modular sealing system to solve the problem that the existing sealing ring of the pot-type rubber bearing cannot be well applied to the bearing with large angle and frequent displacement, and the service mileage of the brass sealing ring is not long.

[0006] The present application provides a modular sealing ring, which comprises a plurality of sealing units, each sealing unit is connected in a ring shape in the circumferential direction, and each sealing unit is an elastic unit. The joint surface between each sealing unit is an arc surface or a stepped surface or a combination of an arc surface and a stepped surface.

[0007] The sealing unit is provided with a concave-convex two-variable curvature contact surface, so that after the sealing system is interlocked and formed, there is no gap between each sealing unit, and the rubber pad top edge is prevented from being extruded and deformed to overflow the pot ring.

[0008] The modular sealing ring comprises a circumferential sealing part, a radial sealing part, an axial sealing part and a connecting part, two opposite surfaces of the circumferential sealing part are arc surfaces with the same surface shape, opposite concave-convex and capable of matching each other, the connecting part is arranged on one side of the arc surface of the circumferential sealing part, and the axial sealing part and the radial sealing part are arranged on two adjacent surfaces adjacent to the two arc surfaces of the circumferential sealing part and perpendicular to each other.

[0009] The radial sealing part and the axial sealing part are used for axial and radial installation of the sealing unit, the circumferential sealing part is connected end to end, and the non-planar connecting surface is matched to form a seal.

[0010] The modular sealing ring comprises a circumferential sealing part, a radial sealing part, an axial sealing part and a connecting part, two opposite surfaces of the circumferential sealing part are arc surfaces with the same surface shape, opposite concave-convex and capable of matching each other, the connecting part is arranged on one side of the arc surface of the circumferential sealing part, and the axial sealing part and the radial sealing part are arranged on two adjacent surfaces adjacent to the two arc surfaces of the circumferential sealing part and perpendicular to each other.

[0011] The connecting surface is a variable curvature surface (one concave and one convex), which is beneficial to bending the system into a circle and has no gap, and the circumferential distribution is matched with the rubber pad.

[0012] The modular sealing ring comprises a circumferential sealing part, a radial sealing part, an axial sealing part and a connecting part, two opposite surfaces of the circumferential sealing part are arc surfaces with the same surface shape, opposite concave-convex and capable of matching each other, the connecting part is arranged on one side of the arc surface of the circumferential sealing part, and the axial sealing part and the radial sealing part are arranged on two adjacent surfaces adjacent to the two arc surfaces of the circumferential sealing part and perpendicular to each other.

[0013] The modular sealing ring comprises a circumferential sealing part, a radial sealing part, an axial sealing part and a connecting part, two opposite surfaces of the circumferential sealing part are arc surfaces with the same surface shape, opposite concave-convex and capable of matching each other, the connecting part is arranged on one side of the arc surface of the circumferential sealing part, and the axial sealing part and the radial sealing part are arranged on two adjacent surfaces adjacent to the two arc surfaces of the circumferential sealing part and perpendicular to each other.

[0014] The connecting surface is a variable curvature surface (one concave and one convex), which is beneficial to bending the system into a circle and has no gap, and the circumferential distribution is matched with the rubber pad.

[0015] The modular sealing ring comprises a circumferential sealing part, a radial sealing part, an axial sealing part and a connecting part, two opposite surfaces of the circumferential sealing part are arc surfaces with the same surface shape, opposite concave-convex and capable of matching each other, the connecting part is arranged on one side of the arc surface of the circumferential sealing part, and the axial sealing part and the radial sealing part are arranged on two adjacent surfaces adjacent to the two arc surfaces of the circumferential sealing part and perpendicular to each other.

[0016] The modular sealing ring has a radial sealing part in plate structure, and one end of the radial sealing part is vertically arranged on the first plane on the side connected with the second plane.

[0017] The modular sealing ring has an axial sealing part in plate structure, and one end of the axial sealing part is vertically arranged on the fourth plane on the side connected with the third plane.

[0018] The modular sealing ring has a sealing unit made of polyvinylidene fluoride, PFA or polyformaldehyde material.

[0019] The polyvinylidene fluoride, PFA and polyformaldehyde have good hardness, strength and rigidity, good self-lubricating property, good fatigue resistance and good elasticity, and are formed by injection molding, so that the rubber pad top edge can be effectively limited, the rubber pad top edge can be prevented from being extruded and deformed out of the basin ring, the cost is low, and the higher cumulative slip amount requirement can be met.

[0020] The modular sealing ring has the following advantages:

[0021] (1) The sealing ring is integrally formed by mold pressing or profile processing, is easy to process, has high and controllable processing precision, and has better sealing effect;

[0022] (2) The sealing ring is made of lubricating polytetrafluoroethylene composite material, has good hardness, strength and rigidity, good self-lubricating property and good fatigue resistance, can effectively limit the rubber pad top edge, can prevent the rubber pad top edge from being extruded and deformed out of the basin ring, and can meet the higher cumulative slip amount requirement.

[0023] (3) The support of different tonnage only needs to increase or decrease the number of sealing units according to the diameter of the rubber pad to meet the design, the sealing units can be mass-produced, and the production cost of the support is greatly reduced. DETAILED DESCRIPTION

[0024] Figure 1 It is a schematic view of a modular sealing ring;

[0025] Figure 2 It is a three-view of a sealing unit of a modular sealing ring;

[0026] Figure 3 It is a schematic view of a circumferential sealing part of a modular sealing ring;

[0027] Figure 4 It is a schematic view of a circumferential sealing part body of a modular sealing ring.

[0028] Reference signs:

[0029] 1, sealing unit; 11, circumferential sealing part; 111, circumferential sealing part body; 1111, first plane; 1112, second plane; 1113, third plane; 1114, fourth plane; 112, first joint surface; 113, second joint surface; 114, connecting hole; 12, radial sealing part; 13, axial sealing part; 14, connecting part. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0031] Embodiment 1

[0032] As shown in the figure, a modular sealing ring comprises a plurality of sealing units 1, each sealing unit 1 is circumferentially connected to form a ring structure, the sealing unit 1 is an elastic unit, and the joint surface between each sealing unit 1 is an arc surface. Figure 1 As shown in the figure, the sealing unit 1 comprises a circumferential sealing part 11, a radial sealing part 12, an axial sealing part 13 and a connecting part 14, the two opposite surfaces of the circumferential sealing part 11 are arc surfaces with the same surface shape, opposite concave-convex and can cooperate with each other, the connecting part 14 is arranged on one side of the circumferential sealing part 11, and the axial sealing part 13 and the radial sealing part 12 are arranged on the two adjacent surfaces adjacent to the two arc surfaces of the circumferential sealing part 11.

[0033] Figure 2 As shown in the figure, the connecting part 14 is a wedge-shaped protrusion arranged on the surface of the first joint surface 112 and cooperates with the connecting hole 114.

[0034] As shown in the figure, the circumferential sealing part 11 is a hexahedral structure, the circumferential sealing part 11 comprises a circumferential sealing part body 111, a first joint surface 112, a second joint surface 113 and a connecting hole 114, the first joint surface 112 and the second joint surface 113 are arranged opposite to the two sides of the axial sealing part 13 body, the first joint surface 112 and the second joint surface 113 are both variable curvature surfaces, the first joint surface 112 is a convex surface, the second joint surface 113 is a concave surface, and the connecting hole 114 is a counterbore arranged on the second joint surface 113, and the connecting hole 114 is coaxial with the circumferential sealing part 11. Figure 3 The connecting part 14 is a wedge-shaped protrusion arranged on the surface of the first joint surface 112 and cooperates with the connecting hole 114.

[0035] As shown in the figure, the connecting part 14 is a wedge-shaped protrusion arranged on the surface of the first joint surface 112 and cooperates with the connecting hole 114.

[0036] Figure 4 ​​As shown, the circumferential sealing part body 111 comprises a first plane 1111, a second plane 1112, a third plane 1113 and a fourth plane 1114, the two opposite edges of the first plane 1111 are connected to the second plane 1112 and the fourth plane 1114 respectively, the edge of the second plane 1112 opposite to the connecting edge with the first plane 1111 is connected to the third plane 1113, and the edge of the third plane 1113 opposite to the connecting edge with the second plane 1112 is connected to the fourth plane 1114.

[0037] The radial sealing part 12 is in a plate shape, one end of the radial sealing part 12 is vertically arranged on the first plane 1111 on the side where the first plane 1111 is connected to the second plane 1112, and the upper surface of the radial sealing part 12 is in the same plane as the second plane 1112.

[0038] The axial sealing part 13 is in a plate shape, one end of the axial sealing part 13 is vertically arranged on the fourth plane 1114 on the side where the fourth plane 1114 is connected to the third plane 1113, and the upper surface of the axial sealing part 13 is in the same plane as the third plane 1113.

[0039] The sealing unit 1 is made of polytetrafluoroethylene.

[0040] The cumulative relative sliding distance of the existing copper sealing ring and the inner wall of the basin ring is not less than 1000m, and the cumulative relative sliding distance of the new sealing ring and the inner wall of the basin ring is not less than 2000m.

[0041] The modular sealing ring is embedded in the rubber pad through a vulcanization process to form a whole. The rubber raw material is processed, and after the rubber material is matched, rubber is mixed, formed and cut, the rubber material is quickly detected, then the modular sealing ring and the rubber pad are assembled into a whole through pressure to vulcanize and trim, so that the influence of processing error on assembly quality is overcome, the quality is better guaranteed, the overall sealing performance is improved, and the overall assembly of the support is more convenient.

[0042] The rubber pad can reliably and tightly connect the sealing ring through the vulcanization process. In addition, the sealing ring itself has structural elasticity, the vulcanization process can fix the shape of the sealing ring, ensure the processing precision, and facilitate assembly.

[0043] Example 2

[0044] As shown in the drawings, Figure 1 A modular sealing ring comprises a plurality of sealing units 1, each sealing unit 1 is circumferentially connected to form a ring structure, each sealing unit 1 is an elastic unit, and the joint surface between each sealing unit 1 is a stepped surface.

[0045] As shown in the drawings, Figure 2As shown, the sealing unit 1 comprises a circumferential sealing part 11, a radial sealing part 12, an axial sealing part 13 and a connecting part 14. The two opposite surfaces of the circumferential sealing part 11 are stepped surfaces with the same surface shape, opposite concave-convex properties and capable of cooperating with each other. The connecting part 14 is arranged on one stepped surface of the circumferential sealing part 11. The axial sealing part 13 and the radial sealing part 12 are arranged perpendicularly on the two adjacent surfaces of the circumferential sealing part 11 adjacent to the two stepped surfaces.

[0046] As shown in the figure, Figure 3 The circumferential sealing part 11 has a hexahedral structure. The circumferential sealing part 11 comprises a circumferential sealing part body 111, a first joint surface 112, a second joint surface 113 and a connecting hole 114. The first joint surface 112 and the second joint surface 113 are arranged oppositely on the two sides of the body of the axial sealing part 13. Both the first joint surface 112 and the second joint surface 113 are three-step surfaces. The first joint surface 112 is a convex stepped surface, and the second joint surface 113 is a concave stepped surface. The connecting hole 114 is a counterbore arranged on the second joint surface 113. The connecting hole 114 is coaxial with the circumferential sealing part 11.

[0047] The connecting part 14 is a wedge-shaped protrusion arranged on the surface of the first joint surface 112 and capable of cooperating with the connecting hole 114.

[0048] As shown in the figure, Figure 4 The circumferential sealing part body 111 comprises a first plane 1111, a second plane 1112, a third plane 1113 and a fourth plane 1114. The two opposite edges of the first plane 1111 are connected to the second plane 1112 and the fourth plane 1114 respectively. The edge of the second plane 1112 opposite to the edge connected to the first plane 1111 is connected to the third plane 1113. The edge of the third plane 1113 opposite to the edge connected to the second plane 1112 is connected to the fourth plane 1114.

[0049] The radial sealing part 12 has a plate structure. One end of the radial sealing part 12 is arranged perpendicularly on one side of the first plane 1111 connected to the second plane 1112 on the first plane 1111. The upper surface of the radial sealing part 12 is coplanar with the second plane 1112.

[0050] The axial sealing part 13 has a plate structure. One end of the axial sealing part 13 is arranged perpendicularly on one side of the fourth plane 1114 connected to the third plane 1113 on the fourth plane 1114. The upper surface of the axial sealing part 13 is coplanar with the third plane 1113.

[0051] The sealing unit 1 is made of polytetrafluoroethylene.

[0052] The cumulative relative sliding distance between the existing copper sealing ring and the inner wall of the basin ring is not less than 1000m, and the cumulative relative sliding distance between the new sealing ring and the inner wall of the basin ring is not less than 2000m.

[0053] The modular sealing ring is embedded in the rubber pad through a vulcanization process to form an integral whole. The rubber raw material is processed, the rubber material is mixed, rubber is mixed, a piece is formed, the rubber material is quickly detected, then the modular sealing ring and the rubber pad are assembled into an integral whole through pressure to vulcanize and trim, the influence of processing error on assembly quality is overcome, the quality is better guaranteed, the overall sealing is improved, and the overall assembly of the support is more convenient.

[0054] The rubber pad can reliably and tightly connect the sealing ring through a vulcanization process. In addition, the sealing ring itself has structural elasticity, the vulcanization process can fix the shape of the sealing ring, ensure the processing precision, and facilitate assembly.

[0055] Embodiment 3

[0056] As shown in Figure 1 , a modular sealing ring includes a plurality of sealing units 1, each sealing unit 1 is connected in a ring shape in the circumferential direction, the sealing unit 1 is an elastic unit, and the connecting surface between each sealing unit 1 is an arc-shaped stepped surface.

[0057] As shown in Figure 2 , the sealing unit 1 includes a circumferential sealing portion 11, a radial sealing portion 12, an axial sealing portion 13, and a connecting portion 14, two opposite surfaces of the circumferential sealing portion 11 are arc surfaces and stepped surfaces that are the same in shape on the surface of the circumferential sealing portion 11, are opposite in concave-convex, and can cooperate with each other, the connecting portion 14 is arranged on the combination of the arc surface and the stepped surface on one side of the circumferential sealing portion 11, and the axial sealing portion 13 and the radial sealing portion 12 are arranged on two adjacent surfaces adjacent to the combination of the two arc surfaces and stepped surfaces of the circumferential sealing portion 11.

[0058] As shown in Figure 3 , the circumferential sealing portion 11 is a hexahedral structure, the circumferential sealing portion 11 includes a circumferential sealing portion body 111, a first combination surface 112, a second combination surface 113, and a connecting hole 114, the first combination surface 112 and the second combination surface 113 are arranged opposite to the two sides of the axial sealing portion 13 body, the first combination surface 112 and the second combination surface 113 are both arc-shaped three-step surfaces, the first combination surface 112 is a convex arc-shaped stepped surface, and the second combination surface 113 is a concave arc-shaped stepped surface, the connecting hole 114 is a counterbore arranged on the second combination surface 113, and the connecting hole 114 is coaxial with the circumferential sealing portion 11.

[0059] The connecting portion 14 is a wedge-shaped protrusion arranged on the surface of the first combination surface 112 and cooperates with the connecting hole 114.

[0060] As shown in Figure 4As shown, the circumferential sealing part body 111 comprises a first plane 1111, a second plane 1112, a third plane 1113 and a fourth plane 1114, the two opposite edges of the first plane 1111 are connected with the second plane 1112 and the fourth plane 1114 respectively, the edge of the second plane 1112 opposite to the connecting edge with the first plane 1111 is connected with the third plane 1113, and the edge of the third plane 1113 opposite to the connecting edge with the second plane 1112 is connected with the fourth plane 1114.

[0061] The radial sealing part 12 is in a plate shape, one end of the radial sealing part 12 is vertically arranged on the first plane 1111 on the side where the first plane 1111 is connected with the second plane 1112, and the upper plate surface of the radial sealing part 12 is in the same plane with the second plane 1112.

[0062] The axial sealing part 13 is in a plate shape, one end of the axial sealing part 13 is vertically arranged on the fourth plane 1114 on the side where the fourth plane 1114 is connected with the third plane 1113, and the upper plate surface of the axial sealing part 13 is in the same plane with the third plane 1113.

[0063] The sealing unit 1 is made of polytetrafluoroethylene.

[0064] The cumulative relative sliding distance between the existing copper sealing ring and the inner wall of the basin ring is not less than 1000m, and the cumulative relative sliding distance between the new sealing ring and the inner wall of the basin ring is not less than 2000m.

[0065] The modular sealing ring is embedded in the rubber pad through a vulcanization process to form a whole. The rubber raw material is processed, and after the rubber material is matched, rubber is mixed, formed and cut, the rubber material is quickly detected, then the modular sealing ring and the rubber pad are assembled into a whole through pressure to vulcanize and trim, so that the influence of processing error on assembly quality is overcome, the quality is better guaranteed, the overall sealing performance is improved, and the overall assembly of the support is more convenient.

[0066] The rubber pad can reliably and tightly connect the sealing ring through the vulcanization process. In addition, the sealing ring itself has structural elasticity, the vulcanization process can fix the shape of the sealing ring, ensure the processing precision, and facilitate assembly.

[0067] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A modular sealing ring, characterized in that: It includes several sealing units (1), each of the sealing units (1) is circumferentially connected in a ring structure, the sealing unit (1) is an elastic unit, and the joint surface between each of the sealing units (1) is an arc surface; When the mating surface is an arc surface, the sealing unit (1) includes a circumferential sealing part (11), a radial sealing part (12), an axial sealing part (13), and a connecting part (14). The two opposite surfaces of the circumferential sealing part (11) are arc surfaces with the same shape, opposite concavity and convexity, and can cooperate with each other. The connecting part (14) is disposed on one side of the arc surface of the circumferential sealing part (11). The axial sealing part (13) and the radial sealing part (12) are disposed perpendicularly to each other on two adjacent surfaces of the circumferential sealing part (11) adjacent to the two arc surfaces. The circumferential sealing part (11) has a hexahedral structure. The circumferential sealing part (11) includes a circumferential sealing part body (111), a first mating surface (112), and a second mating surface (113). The first mating surface (112) and the second mating surface (113) are disposed opposite to each other on both sides of the axial sealing part (13) body. The first mating surface (112) and the second mating surface (113) are both variable curvature surfaces. The first mating surface (112) is a convex surface, and the second mating surface (113) is a concave surface. The circumferential sealing part body (111) includes a first plane (1111), a second plane (1112), a third plane (1113), and a fourth plane (1114). The two opposite sides of the first plane (1111) are respectively connected to the second plane (1112) and the fourth plane (1114). The side of the second plane (1112) opposite to the side connecting to the first plane (1111) is connected to the third plane (1113). The side of the third plane (1113) opposite to the side connecting to the second plane (1112) is connected to the fourth plane (1114). The radial sealing part (12) is a plate-shaped structure. One end of the radial sealing part (12) is vertically disposed on the side of the first plane (1111) where the first plane (1111) and the second plane (1112) are connected. The upper plate surface of the radial sealing part (12) is coplanar with the second plane (1112). The axial sealing part (13) is a plate-shaped structure. One end of the axial sealing part (13) is vertically disposed on the side of the fourth plane (1114) where the fourth plane (1114) connects with the third plane (1113). The upper plate surface of the axial sealing part (13) is coplanar with the third plane (1113). The circumferential sealing part (11) further includes a connecting hole (114), which is a countersunk hole provided on the second mating surface (113), and the connecting hole (114) is coaxial with the circumferential sealing part (11).

2. The modular sealing ring according to claim 1, characterized in that: The connecting part (14) is a wedge-shaped protrusion disposed on the surface of the first mating surface (112) and cooperating with the connecting hole (114).

3. A modular sealing ring according to claim 1, characterized in that: The sealing unit (1) is made of polyvinylidene fluoride, PFA or polyoxymethylene.

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