Switching equipment rod piece and sealing device for plugging hole

Abstract

The utility model relates to a switching equipment rod piece and a sealing device for plugging a hole, which is characterized by comprising a sealing plug (1), a sealing support framework (2), sealing convex rings (3) and a lubricating waterproof material (4), the sealing support framework (2) is matched with the sealing plug (1) to integrally form a central groove-shaped structure, the sealing convex rings (3) are uniformly distributed at intervals from bottom to top around the outline structure outline of a central groove, and the lubricating waterproof material (4) is arranged on the sealing convex rings (3). The lubricating waterproof material (4) seals the equipment shell (5) and the sealing convex ring (3) between the equipment shell (5) and the sealing convex ring (3); the sealing support framework (2) is matched with the sealing plug (1) or the convex outer side of the sealing support framework (2) is matched with the concave inner side of the sealing plug (1); according to the sealing device for the rod piece and the plugging hole of the conversion equipment, the reliability of the sealing performance of the rod piece and the plugging hole is achieved under the condition that the rod piece and the plugging hole are frequently moved, assembled and disassembled.

Description

Technical Field

[0001] The utility model belongs to a rail transit turnout switching device, which is used for sealing holes or moving parts of the railway turnout switching device which need to be frequently opened, and is particularly a sealing device for sealing moving rods and blocking holes. Background Art

[0002] Turnout conversion equipment is generally outdoor equipment, which requires a certain level of protection. There are dust and water-proof measures between the rods extending from the equipment and the equipment shell, and the holes reserved in the bottom shell and cover of the equipment to prevent dust, rain and snow from invading the equipment and affecting the normal use of the equipment. Since the on-site conversion equipment is installed next to the railway track in an outdoor environment, the sealing components must work under conditions such as long-term vibration, alternating high and low temperatures, and repeated movement. The seals are required to have small size changes at high and low temperatures, and the sealing resistance at the seal should not be too large due to sealing shrinkage at low temperatures, and the sealing measures should not fail at high temperatures. At present, the rods of the conversion equipment are mostly sealed with a dustproof felt plus a layer of sealing ring. The outer layer of dustproof felt will be immersed in liquid oil when used for a long time, and it will be lost and volatilized. If it is not refilled regularly and in time, the felt will become dry and hard. In severe cases, it will absorb rainwater when it rains, causing the parts where the felt is installed to rust; the inner sealing ring is a single-layer lip seal, which is worn under repeated movements of the rod, and the sealing reliability at the rod is reduced. Severe wear may cause the seal to fail. Some rods have a thicker integral sealing ring, which is sealed by pressing and squeezing the sealing ring with the outer cover to deform it, which greatly increases the movement resistance of the rod. A simple rubber plug is often used to seal the hole of the conversion equipment. Because the hole plug needs to be opened and closed frequently, if the rubber plug is too tight, it will be inconvenient to open and close. If it is too loose, the seal will be unreliable, and the sealing plug will wear due to frequent closing. All these will reduce the sealing performance of the conversion equipment, allowing dust, rain, and snow to enter the machine from the junction of the rod and the bottom shell and the bottom shell hole, reducing the protection level and reliability of the conversion equipment. In order to ensure that the conversion equipment has certain waterproof and dustproof requirements, it is particularly important to improve the sealing reliability of the moving rods and the holes that are frequently opened. Summary of the invention

[0003] The utility model aims to provide a sealing device for a rod of a conversion device and a plugging hole.

[0004] In order to achieve the reliability of the sealing performance at the rods and plugging holes under the conditions of frequent movement, installation and disassembly of the rods and plugging holes.

[0005] The technical solution of the utility model is: the utility model relates to a sealing device for a conversion equipment rod and a plugging hole, which is characterized in that it includes: a sealing plug, a sealing support frame, a sealing convex ring, and a lubricating waterproof material. The sealing support frame cooperates with the sealing plug to form a central groove structure as a whole. The sealing convex rings are evenly distributed from bottom to top around the outer structural contour of the central groove. The lubricating waterproof material forms a seal between the equipment housing and the sealing convex ring.

[0006] The sealing support frame is matched with the sealing plug, or the convex outer side of the sealing support frame is matched with the concave inner side of the sealing plug, or the convex inner side of the sealing support frame is matched with the concave outer side of the sealing plug.

[0007] The sealing support frame is formed by processing a material with a higher hardness than the sealing material, such as metal or non-metal.

[0008] The size of the sealing support frame is smaller than the sealing plug.

[0009] The sealing plug is uniformly compression-molded on the sealing support frame.

[0010] The lubricating waterproof material is an elastic material, which forms a sealing ring between the device housing and the multi-layer sealing convex ring. The outer dimensions of the sealing ring are larger than the basic dimensions of the hole on the device housing.

[0011] The lubricating waterproof material is filled in the sealing convex ring. It is grease or other lubricating waterproof material with a certain viscosity. When the lubricating waterproof material seals the hole on the equipment shell, the multi-layer convex rings of the sealing plug and the lubricating waterproof material of the convex ring can reliably statically seal the equipment hole. The supporting frame inside the sealing plug can effectively support the sealing plug, achieve reliable sealing and can be easily disassembled.

[0012] The overall shape of the sealing convex ring is square, circular or a specific shape; when the sealing convex ring is a square rod sealing ring, the four inner corners of the square sealing ring are chamfered or rounded.

[0013] The advantages of the utility model compared with the prior art are:

[0014] 1. A sealing support skeleton is added inside the sealing element to reduce the hardness of the sealing material as much as possible, which has better shrinkage performance and better sealing performance.

[0015] 2. The sealing element has a supporting matrix, and the large-size dynamic seal is more uniform and reliable, and solves the problem of excessive expansion or contraction of the sealing element at high and low temperatures.

[0016] 3. There are multiple sealing convex rings on the sealing element to form a sealing ring, which can achieve multi-layer sealing.

[0017] 4. The multiple sealing convex rings of the sealing element are coated with lubricating grease and other lubricating and waterproof materials to improve the sealing reliability.

[0018] 5. The multiple sealing convex rings of the sealing element are coated with lubricating grease and other lubricating and waterproof materials, which can reduce the friction coefficient between the sealing substrate and the equipment, reduce the wear of the sealing substrate, extend the service life of the sealing element and facilitate disassembly and replacement.

[0019] 6. Lubricating grease is applied to the multiple sealing convex rings of the sealing element to achieve lubrication and rust prevention treatment for the moving rods.

[0020] The utility model will be further described below in conjunction with the accompanying drawings of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a hole plugging and sealing plug assembly according to Example 1;

[0022] Figure 2 This is a schematic diagram of the sealing ring structure of the rod member in Example 2;

[0023] Figure 3 The second embodiment is a schematic diagram of a circular sealing ring structure;

[0024] Figure 4 The second embodiment is a schematic diagram of the square sealing ring structure.

[0025] In the figure: 1. Sealing plug, 2. Sealing support frame, 3. Sealing convex ring, 4. Lubricating waterproof material, 5. Equipment housing, 6. Sealing ring. DETAILED DESCRIPTION

[0026] In order to further illustrate the technical means and methods adopted by the present invention, the specific implementation methods, structural features and methods of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments: Example

[0027] like Figure 1 As shown, the utility model relates to a sealing device for a conversion equipment rod and a plugging hole, comprising: a sealing plug 1, a sealing support frame 2, a sealing convex ring 3, and a lubricating waterproof material 4. The convex outer side of the sealing support frame 2 cooperates with the concave inner side of the sealing plug 1 to form a central groove structure as a whole. The sealing convex rings 3 are evenly spaced from bottom to top around the outer structural contour of the central groove. The lubricating waterproof material 4 forms a seal between the equipment housing 5 and the sealing convex ring 3.

[0028] The sealing support frame 2 is formed by processing a material with a higher hardness than the sealing material, such as metal or non-metal.

[0029] The size of the sealing support frame 2 is smaller than that of the sealing plug 1 .

[0030] The sealing plug 1 is uniformly compression-molded on the sealing support frame 2 .

[0031] The lubricating and waterproof material 4 is an elastic material, which forms a sealing ring between the device housing 5 and the multi-layer sealing convex ring 3. The outer dimensions of the sealing ring are larger than the basic dimensions of the hole on the device housing 5.

[0032] The lubricating waterproof material 4 is filled in the sealing convex ring. It is grease with a certain viscosity or other lubricating waterproof material. When the lubricating waterproof material 4 seals the hole on the equipment housing 5, the multi-layer convex rings of the sealing plug 1 and the lubricating waterproof material 4 of the convex ring can reliably statically seal the equipment hole. The supporting frame inside the sealing plug 1 can effectively support the sealing plug 1, achieve reliable sealing and can be easily disassembled. Example

[0033] like Figure 2 As shown, the utility model relates to a sealing device for a conversion equipment rod and a plugging hole, comprising: a sealing plug 1, a sealing support frame 2, a sealing convex ring 3, and a lubricating waterproof material 4. The convex inner side of the sealing support frame 2 cooperates with the concave outer side of the sealing plug 1 to form a central groove structure as a whole. The sealing convex rings 3 are evenly spaced from bottom to top around the inner side of the central groove outer structure contour. The lubricating waterproof material 4 forms a seal between the equipment housing 5 and the sealing convex ring 3.

[0034] The sealing support frame 2 is formed by processing a material with a higher hardness than the sealing material, such as metal or non-metal.

[0035] The size of the sealing support frame 2 is smaller than that of the sealing plug 1 .

[0036] The sealing plug 1 is uniformly compression-molded on the sealing support frame 2 .

[0037] The lubricating and waterproof material 4 is an elastic material, which forms a sealing ring between the device housing 5 and the multi-layer sealing convex ring 3. The outer dimensions of the sealing ring are larger than the basic dimensions of the hole on the device housing 5.

[0038] like Figure 3 and Figure 4 As shown, the overall shape of the sealing bead 3 is square or circular or a specific shape.

[0039] When the sealing convex ring 3 is a square rod sealing ring 6, the four inner corners of the square rod sealing ring 6 are chamfered or rounded.

[0040] The lubricating waterproof material 4 is filled in the sealing convex ring 3. It is grease or other lubricating waterproof material 4 with a certain viscosity. When the lubricating waterproof material 4 seals the hole on the equipment housing 5, the multi-layer convex rings of the sealing plug 1 and the lubricating waterproof material 4 of the convex ring can reliably and statically seal the equipment hole. The supporting frame 2 inside the sealing plug 1 can effectively support the sealing plug 1, achieve reliable sealing and can be easily disassembled.

[0041] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A sealing device for plugging a hole of a conversion device rod, characterized in that it comprises: a sealing plug (1), a sealing support frame (2), a sealing convex ring (3), and a lubricating waterproof material (4), wherein the sealing support frame (2) cooperates with the sealing plug (1) to form a central groove structure as a whole, and the sealing convex rings (3) are evenly spaced from bottom to top around the contour of the central groove structure, and the lubricating waterproof material (4) forms a seal between the device housing (5) and the sealing convex ring (3).

2. The sealing device for plugging a hole of a conversion equipment rod according to claim 1, characterized in that: The sealing support frame (2) cooperates with the sealing plug (1), or the convex outer side of the sealing support frame (2) cooperates with the concave inner side of the sealing plug (1), or the convex inner side of the sealing support frame (2) cooperates with the concave outer side of the sealing plug (1).

3. The sealing device for plugging a hole of a conversion equipment rod according to claim 1, characterized in that: The sealing support frame (2) is formed by processing a material with a higher hardness than the sealing material, such as metal or non-metal.

4. The sealing device for plugging a hole of a conversion equipment rod according to claim 1, characterized in that: The size of the sealing support frame (2) is smaller than that of the sealing plug (1).

5. The sealing device for plugging a hole of a conversion equipment rod according to claim 1, characterized in that: The sealing plug (1) is uniformly compression-molded on the sealing support frame (2).

6. The sealing device for plugging a hole of a conversion equipment rod according to claim 1, characterized in that: The lubricating and waterproof material (4) is an elastic material, which forms a sealing ring between the device housing (5) and the multi-layer sealing convex ring (3), and the outer dimensions of the sealing ring are larger than the basic dimensions of the hole on the device housing (5).

7. The sealing device for plugging a hole of a conversion equipment rod according to claim 1, characterized in that: The lubricating waterproof material (4) is filled in the sealing convex ring (3).

8. The sealing device for plugging a hole of a conversion equipment rod according to claim 1, characterized in that: The overall shape of the sealing convex ring (3) is either square or circular.

Images