An integrally formed flame-retardant dust cover

Abstract

An integrally formed flame-retardant dust cover, comprising a strip-shaped bonding layer that can be rolled into a cylindrical structure. The strip-shaped bonding layer consists of a high-temperature-resistant rubber layer located on the inner layer and a fireproof cloth layer located on the outer layer. The strip-shaped bonding layer has two sets of side groups, and each set of side groups includes two opposite sides. The side group includes side A and side B. Side A of one set of side groups is rolled to side B, which is opposite to side A, to form a dust cover body in a cylindrical structure. Both ends of the dust cover body are open. The distance between side A and side B forms an opening seam on the side wall of the dust cover body. The opening seam extends from the open end of the dust cover body to the open end of the other end. It also includes a connecting piece for combining / separating the opening seam; the opening seam is inclined on the side wall of the dust cover body. The present invention has sufficient strength and elasticity to resist the impact and ablation of grinding sparks. When the grinding sparks hit, they will be rebounded, avoiding adhesion and prolonging the service life.

Description

Technical Field

[0001] The present invention relates to the field of railway mechanical vehicles, and specifically relates to a dust cover that is integrally formed and flame-retardant. Background Art

[0002] When a rail grinding vehicle is operating, a large amount of dust containing fine iron filings, resin residues, and sand grains will be generated due to the grinding of the grinding wheel and the rail. At the same time, the grinding sparks generated have a relatively high temperature and a large impact force. To prevent the grinding sparks and dust from splashing out and improve the dust collection effect, baffles and dust curtains are provided along the circumference of the grinding trolley. This results in a relatively high dust concentration in the area of the grinding trolley, and a large amount of dust will accumulate on the surface of the grinding head guide column and the oil cylinder, which is likely to cause premature wear or jamming of the guide column and the guide sleeve, and the piston rod of the oil cylinder and the cylinder body. In addition, the temperature of the grinding sparks generated is relatively high, and an ordinary dust cover is easily damaged and burned. Therefore, it is necessary to develop a dust cover suitable for high temperature and multi-dust environments. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above deficiencies of the prior art, and provide an integrally formed flame-retardant dust cover, which is easy to install and has a long service life. The dust cover wrinkles adopt an integrally formed structure, and there is no need to use stitches for fixation, avoiding damage to the dust cover caused by the stitches being broken.

[0004] The technical solution of the present invention is: it includes a strip-shaped bonding layer that can be rolled into a cylindrical structure. The strip-shaped bonding layer is composed of a high-temperature-resistant rubber layer located on the inner layer and a fireproof cloth layer located on the outer layer. The strip-shaped bonding layer has two groups of side edge groups. Each group of side edge groups includes two opposite side edges. The side edge group includes side edge A and side edge B. One side edge A of one group of side edge groups is rolled to the opposite side edge B of this side edge A to form the dust cover body in a cylindrical structure. The two side edges of the other group of side edge groups are rolled into the openings at both ends of the dust cover body. The distance between side edge A and side edge B forms an opening seam on the side wall of the dust cover body. The opening seam extends from the opening at one end of the dust cover body to the opening at the other end. It also includes a connecting member for combining / separating the opening seam; the opening seam is inclined on the side wall of the dust cover body.

[0005] The dust cover body is composed of at least two variable-diameter cylindrical sections. The adjacent variable-diameter cylindrical sections are connected to each other. The inner diameter of the variable-diameter cylindrical section gradually decreases from the middle towards both ends. The two ends of the dust cover body are fixed-diameter cylindrical sections.

[0006] The dust cover body is an elastic axially telescopic structure.

[0007] The connecting member is a zipper, a snap fastener or a magic tape.

[0008] The connecting member includes a first connecting part and a second connecting part that cooperates with the first connecting part. The first connecting part is connected to side edge A, and the second connecting part is connected to side edge B.

[0009] The rubber layer and the fireproof cloth layer are bonded together under high temperature to form an integral body, and are molded and cast into a wrinkled shape structure. The opening seams are installed obliquely, and when the dust cover is compressed, the connection points of each wrinkle are not at the same point, which can reduce the final thickness after compression.

[0010] The shape of the strip-shaped bonding layer is a parallelogram.

[0011] The present invention has the following advantages and effects compared with the prior art:

[0012] The dust cover wrinkles adopt an integral molding structure, and there is no need to use stitches for fixation, avoiding damage to the dust cover caused by broken stitches;

[0013] The dust cover adopts a multi-layer structure. The outermost layer uses fireproof cloth that is resistant to high temperature and does not adhere to grinding sparks, and the inner layer uses rubber that is resistant to high temperature; the two are die-cast and bonded together under high temperature; due to having a certain elasticity, the grinding sparks will bounce off after hitting, avoiding adhesion.

[0014] 3. The dust cover is provided with a fixing device that penetrates up and down, which can unfold and fix the dust cover, avoiding the disassembly of the oil cylinder when installing the dust cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the outer shape of the dust cover of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the strip-shaped bonding layer;

[0017] Figure 3 It is a schematic diagram of the present invention installed on the guide post;

[0018] In the figure, 1. Fireproof cloth, 2. Rubber, 3. Zipper, 4. Fixed seat on the guide post, 5. Clamp, 6. Dust cover, 7. Guide post, 8. Guide sleeve, 9. Grinding head, 10. Fixed seat under the guide post. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Figure 1 Among them, the dust cover 6 adopts a multi-layer structure. The outermost layer uses fireproof cloth 1 that is resistant to high temperature and does not adhere to grinding sparks; the inner layer uses rubber 2 that is resistant to high temperature and is used to support the outer fireproof cloth 1; the fireproof cloth 1 and the rubber 2 are bonded together under high temperature to form an integral body, and are molded and cast into a wrinkled shape, having sufficient strength and elasticity to resist the impact and ablation of grinding sparks. When the grinding sparks hit, they will bounce off, avoiding adhesion. The dust cover is provided with a zipper 3 that penetrates up and down for convenient installation.

[0020] Figure 2In it, a dust-proof sleeve 6 is sleeved outside a guide post 7. The upper end of the dust-proof sleeve 6 is fixed on a fixing seat 4 on the guide post through a clamp 5, and the lower end of the dust-proof sleeve 6 is fixed on a guide sleeve 8 through a clamp 5. The lower end of the guide post is fixed on a lower fixing seat 10 of the guide post. The dust-proof sleeve 6 expands and contracts when moving up and down with a grinding head 9.

Claims

1. An integrally formed flame retardant dust cover, characterized in that: The strip-shaped bonding layer includes a high-temperature resistant rubber layer located on the inner layer and a fireproof cloth layer located on the outer layer. The strip-shaped bonding layer has two side groups, each of which includes two oppositely arranged side groups. The side groups include a side A and a side B. The side A of one side group is rolled to the side B on the opposite side of the side A to form a dust cover body with a cylindrical structure. The two sides of the other side group are rolled into openings at both ends of the dust cover body. The side A and the side B are connected. The spacing between the two Bs forms an opening on the side wall of the dust cover body, and the opening extends from the opening at one end of the dust cover body to the opening at the other end, and also includes a connector for merging / separating the opening; the rubber layer and the fireproof cloth layer are die-cast and bonded together at high temperature to form a whole, and are molded and die-cast into a wrinkle-shaped structure; the opening is obliquely arranged on the side wall of the dust cover body; the oblique installation of the opening allows the connection points of each wrinkle to be different when the dust cover is compressed, thereby reducing the thickness after compression; The dust cover body is composed of at least two variable diameter cylindrical sections, two adjacent variable diameter cylindrical sections are connected to each other, the inner diameter of the variable diameter cylindrical section gradually decreases from the middle toward the two ends, and the two ends of the dust cover body are fixed diameter cylindrical sections; The dust cover body is an elastic structure that can be extended and retracted along the axial direction.

2. The integrally formed flame-retardant dust cover according to claim 1, characterized in that: The connecting piece is a zipper, a press button or an abrasion patch.

3. The integrally formed flame-retardant dust cover according to claim 1 or 2, characterized in that: The connecting member includes a connecting portion 1 and a connecting portion 2 that cooperates with the connecting portion 1. The connecting portion 1 is connected to the side 1 A, and the connecting portion 2 is connected to the side 2 B.

4. The integrally formed flame retardant dust cover according to claim 1, characterized in that: The strip-shaped bonding layer is in the shape of a parallelogram.

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