Rapid elastic strip insulation fastener structure for track

Abstract

The utility model relates to the field of railway tracks, and discloses a rapid elastic strip insulation fastener structure for a track, which comprises a bottom backing plate, an under-track backing plate and a rapid elastic strip, the under-track backing plate comprises a backing plate main body, and upper turning plates and lower turning plates arranged on the backing plate main body, the upper turning plates are arranged on two sides of the backing plate main body vertical to the track line direction, and the lower turning plates are arranged on the backing plate main body. The side, away from the base plate body, of the upper turning plate is turned upwards so that the upper turning plate can be attached to the steel rail. The lower turning plates are arranged on the two sides of the base plate body in the track line direction. The sides, away from the base plate body, of the lower turning plates are turned downwards so that the lower turning plates can be attached to the bottom base plate. According to the quick elastic strip fastener, the upper turning plate can prevent scrap iron from falling into the rail bottom and a gap of a steel rail, a passage is prevented from being formed between the steel rail and the fastener, the insulating property of the quick elastic strip fastener is improved, the lower turning plate can fix the base plate body to the working position, and the problem that the base plate body is prone to loosening and suspending under the long-term repeated loading effect is solved. And the service life of the under-rail backing plate is prolonged, and the driving safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of railway tracks, in particular to a fast spring clip insulation fastener structure for tracks. Background Art

[0002] Rail fasteners, as an important component of the track structure, have the functions of fixing the position of the rails, preventing the longitudinal and lateral displacement of the rails, and preventing the rails from tipping over. At the same time, they can also provide the necessary elasticity and insulation properties. The fasteners used in my country's urban transportation are divided into bolted fasteners and boltless fasteners. Bolted spring clip fasteners have more parts and require a lot of installation and maintenance, which is not conducive to subsequent operation and maintenance; boltless spring clip fasteners have fewer parts, uniform clamping pressure, and reduced maintenance. With the development of rail transit technology, a fast spring clip fastener has been widely used in urban rail transit. This fastener is a shoulder-less and bolt-less fastener system composed of fast spring clips, insulating caps, gauge blocks, rail pads, cast iron base plates, anchoring systems, coupling pads, and height adjustment pads. It has a constant clamping pressure, requires little maintenance, and is easy to load and unload.

[0003] However, the aforementioned fast clip fasteners still face numerous problems in actual use. For one thing, the friction, vibration, and repeated impact between the train wheels and rails cause iron filings to scatter on the fastener surface, forming pathways between the rails and the fastener's iron parts. Furthermore, the tunnel's long-term humidity significantly reduces the fast clip's insulation. The stray currents generated during train operation can adversely affect the rails, the main structural steel bars, and even surrounding metal pipelines. Utility Model Content

[0004] The technical problem to be solved by the present invention is: how to improve the insulation performance of a fast clip fastener. In order to solve the above technical problem, the present invention provides a fast clip insulation fastener structure for rails, comprising a base plate, a rail underplate, and a fast clip. The base plate is provided with a shoulder, and a fast clip is fixed in the shoulder. The fast clip is used to buckle and fix the rail to the base plate.

[0005] The rail pad includes a pad body and an upper flap and a lower flap arranged on the pad body, the upper flap is arranged on both sides of the pad body perpendicular to the direction of the track line, and the side of the upper flap away from the pad body is folded upward so that the upper flap is in contact with the rail; the lower flap is arranged on both sides of the pad body along the direction of the track line, and the side of the lower flap away from the pad body is folded downward so that the lower flap is in contact with the bottom pad.

[0006] Preferably, the upper flap is fitted with the rail bottom and rail waist of the rail, and is fixed to the rail by the fast spring clip.

[0007] Preferably, the upper flaps on both sides of the pad body are staggered in the direction of the track line.

[0008] Preferably, the downward-folding length of the downward-folding plate is 6 mm to 8 mm.

[0009] Preferably, the upper flap is made of ceramic material, and the outer surface of the upper flap is coated with a polymer wear-resistant insulating coating.

[0010] Preferably, the bottom plate and the shoulder guard are integrally die-cast, the bottom plate is made of alloy steel, and the shoulder guard is made of aluminum alloy.

[0011] Preferably, an insulating cap is provided at the end of the fast spring clip, and a plurality of drainage holes are provided at the bottom of the insulating cap.

[0012] Preferably, the fast spring bar provided in the shoulder guard is fixed to the bottom plate by bolts, the outer wall outside the bolt is provided with a sleeve, the diameter of the sleeve is 35mm to 53mm, and the thread pitch on the sleeve is 10mm to 16mm.

[0013] Compared with the prior art, the fast spring clip insulation fastener structure for rail provided in the embodiment of the present invention has the following beneficial effects:

[0014] In the present invention, the upper flap can fit and wrap the bottom and waist of the rail. The upper flap can prevent iron filings and other debris generated when the wheels grind the rails from falling into the bottom and gaps of the rails, which is convenient for subsequent cleaning of the iron filings, avoids the formation of a passage between the rails and the iron parts of the fasteners, and improves the insulation performance of the fast spring clip fasteners. Moreover, since the upper flap is fixed by the fast spring clips, the structural position of the entire pad body is more stable, and the lower flap can firmly fix the pad body in the working position, eliminating the problem that the pad body is easy to loosen and hang in the air under long-term repeated loads, thereby improving the service life of the pad under the rail and improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view of the utility model;

[0016] Figure 2 This is the main view of the rail pad of the utility model in the use state;

[0017] Figure 3 This is a top view of the rail pad of the utility model in the unfolded state;

[0018] Figure 4 It is a side view of the rail pad of the utility model;

[0019] Figure 5This is a structural diagram of the bottom pad and shoulder of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the insulating cap of the utility model.

[0021] In the figure: 1. bottom plate;

[0022] 2. Rail pad; 21. Pad body; 22. Upper flap; 23. Lower flap;

[0023] 3. Fast spring clip; 31. Insulation cap; 32. Drain hole;

[0024] 4. Shoulder stop; 5. Rail; 6. Bolt; 7. Casing. DETAILED DESCRIPTION

[0025] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] like Figures 1 to 4 As shown, the preferred embodiment of the present invention provides a fast spring clip insulation fastener structure for rails, which includes a bottom plate 1, a rail bottom plate 2 and a fast spring clip 3. The bottom plate 1 is provided with a shoulder 4, and the fast spring clip 3 is fixed in the shoulder 4. The fast spring clip 3 is used to buckle and fix the rail 5 on the bottom plate 1;

[0027] The rail pad 2 includes a pad body 21 and an upper flap 22 and a lower flap 23 arranged on the pad body 21. The upper flap 22 is arranged on both sides of the pad body 21 perpendicular to the direction of the track line. The side of the upper flap 22 away from the pad body 21 is folded upward so that the upper flap 22 fits the rail 5; the lower flap 23 is arranged on both sides of the pad body 21 along the direction of the track line. The side of the lower flap 23 away from the pad body 21 is folded downward so that the lower flap 23 fits the bottom pad 1.

[0028] Specifically, compared with the ordinary rail pads 2 in the prior art, the rail pads 2 in this embodiment are respectively provided with lower flaps 23 and upper flaps 22 on both sides along the line direction and on both sides perpendicular to the line. The upper flaps 22 flip up and fit the rails 5, while the lower flaps 23 flip down and fit the bottom pads 1, and are clamped and fixed by the two adjacent bottom pads 1. During the operation of the train, the rails 5 will drive the rail pads 2 to slide through friction when moving longitudinally. At this time, the lower flaps 23 can prevent the rail pads 2 from sliding through the reaction force exerted by the bottom pads 1, thereby ensuring the stability of the working position of the rail pads 2, and the rails 5 will not be suspended. The service life of the rail pads 2 is longer and driving is safer. The upper flap 22 fits against the rail 5 and can block the iron filings generated during vehicle operation, preventing the iron filings from directly contacting the rail 5 or falling into the gap between the rail 5 and the fast clip 3, thereby preventing a passage from forming between the rail 5 and the fast clip 3, improving the insulation performance of the fast clip 3 fastener, and making subsequent cleaning of the iron filings more convenient and quick.

[0029] In some embodiments, the upper flap 22 is aligned with the base and waist of the rail 5 and secured to the rail 5 by the fast clip 3. Specifically, the upper flap 22 is positioned between the rail 5 and the fast clip 3 and secured by the fast clip 3. This makes the working position of the rail pad 2 more stable and reliable, less prone to loosening and other problems, and better blocks iron chips. The upper flap 22's alignment with the base and waist of the rail 5 also increases and improves the contact area between the upper flap 22 and the rail 5, thereby better blocking iron chips.

[0030] In some embodiments, the upper flaps 22 on either side of the pad body 21 are staggered in the direction of the track. Specifically, the staggered upper flaps 22 allow for better coordination with the upper flaps 22 on adjacent rail pads 2 to set the gauge blocks, further facilitating the installation and production of the rail pads 2. Furthermore, in this embodiment, the gauge blocks can be colored or painted differently to meet specific needs, thereby improving operational efficiency.

[0031] In some embodiments, the downward turning length of the lower flap 23 is 6 mm to 8 mm. The downward turning length of the lower flap 23 can be appropriately adjusted according to the thickness of the bottom pad 1, so as to ensure that the two adjacent bottom pads 1 can more stably clamp and fix the lower flap 23, thereby ensuring the stability of the position of the pad body 21.

[0032] In some embodiments, the upper flap 22 is made of ceramic, and its outer surface is coated with a polymer wear-resistant insulating coating. The use of ceramic and the coating further enhance the bonding performance of the upper flap 22, further preventing electrical conduction between the fast clip 3 and the rail 5, thereby extending the service life of the rail 5 and ensuring safety during driving. The wear-resistant coating and ceramic material also extend the service life of the upper flap 22.

[0033] like Figure 5 As shown, in some embodiments, the bottom plate 1 and the shoulder 4 are integrally die-cast, the bottom plate 1 is made of alloy steel, and the shoulder 4 is made of aluminum alloy.

[0034] Specifically, the bottom plate 1 is a steel material formed by adding one or more alloying elements to carbon steel, thereby increasing the service life and stability of the bottom plate 1, enhancing the safety and stability of the rail line, and reducing maintenance costs. When the bottom plate 1 is produced using a high-pressure die-casting process, the molten aluminum alloy is first injected into the mold at high speed and high pressure through the injection mechanism of the die-casting machine and pressurized. Then, the horizontal high-pressure die-casting machine ensures that the mold is completely closed, and the aluminum alloy parts are quickly cooled to a solid state through the cooling system in the mold. Finally, the mold is opened to remove the parts, clean them, and spray the release agent. In this embodiment, an integrated casting process is adopted, and the shoulder guard 4 and the bottom plate 1 are integrally formed, eliminating the risk of desoldering that may occur in traditional welding solutions. The connection between the shoulder guard 4 and the bottom plate 1 is more stable and stronger, and the safety and stability of use are naturally higher, driving is safer, and the production time is shortened.

[0035] like Figure 6 As shown, in some embodiments, an insulating cap 31 is provided at the end of the fast spring clip 3 , and a plurality of drainage holes 32 are provided at the bottom of the insulating cap 31 .

[0036] Specifically, the insulating cap 31 at the end of a conventional fast clip 3 has a closed concave structure. When the clip is sheared in the humid environment of a tunnel, water easily accumulates, causing the clip to rust, reducing its service life, affecting driving safety, and increasing the workload of subsequent operations and maintenance. In this embodiment, however, a drainage hole 32 is provided at the lowest point of the concave structure of the insulating cap 31. When flushing water, seepage water, or other potential wastewater is present in the tunnel, this structure automatically drains the water accumulated at the low point of the insulating cap 31 at the tip of the clip, preventing the clip from rusting and thus affecting the overall service performance of the fastener.

[0037] In some embodiments, the fast spring clip 3 disposed within the shoulder 4 is secured to the base plate 1 via bolts 6. A sleeve 7 is provided on the outer wall of the bolt 6. The diameter of the sleeve 7 ranges from 35 mm to 53 mm, and the pitch of the threads on the sleeve 7 ranges from 10 mm to 16 mm. In conventional technical solutions, the diameter of the sleeve 7 within the fast spring clip 3 space is too small to effectively secure the slide rail or slideway, resulting in thread stripping when the fastener bolt 6 is installed or subjected to stress. Furthermore, the threads of the sleeve 7 used in the prior art are mostly stacked, making it difficult to replace the sleeve 7 after failure. In this embodiment, the diameter of the sleeve 7 is increased, and the thread pitch is also increased. The specific values ​​can be adjusted according to usage requirements. The thread structure is also adjusted to a stepped spiral, which not only increases the stress-bearing area of ​​the thread but also facilitates replacement during subsequent operation and maintenance.

[0038] In summary, the embodiment of the present invention provides a fast spring bar insulation fastener structure for rails, which ensures the stability of the working position of the rail pad 2 by arranging a lower flap 23 on the rail pad 2, so that the lower flap 23 fits the bottom pad 1, thereby ensuring the stability of the working position of the rail pad 2, avoiding sliding and loosening of the pad body 21, avoiding the bottom of the rail 5 from being suspended, and ensuring driving safety; and the arrangement of the upper flap 22 can effectively block the accumulation of iron filings, avoid the accumulation of iron filings, form a passage between the fast spring bar 3 and the rail 5, improve the insulation performance of the fast spring bar 3, and thus improve driving safety. At the same time, the upper flap 22 is fixed to the rail 5 by the fast spring bar 3, which further improves the stability of the pad body 21; and the arrangement of the drainage hole 32 on the insulating cap 31 can avoid the problem of water accumulation, thereby further improving the insulation performance of the fast spring bar 3.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A fast spring clip insulation fastener structure for rail, characterized in that: It includes a bottom plate, a rail bottom plate and a fast spring bar. The bottom plate is provided with a shoulder. The fast spring bar is fixed in the shoulder. The fast spring bar is used to buckle and fix the rail on the bottom plate. The rail pad includes a pad body and an upper flap and a lower flap arranged on the pad body, the upper flap is arranged on both sides of the pad body perpendicular to the direction of the track line, and the side of the upper flap away from the pad body is folded upward so that the upper flap is in contact with the rail; the lower flap is arranged on both sides of the pad body along the direction of the track line, and the side of the lower flap away from the pad body is folded downward so that the lower flap is in contact with the bottom pad.

2. The fast spring clip insulation fastener structure for rail according to claim 1, characterized in that: The upper flap is fitted with the rail bottom and rail waist of the rail and is fixed to the rail by the fast spring clip.

3. The fast spring clip insulation fastener structure for rail according to claim 1, characterized in that: The upper flaps on both sides of the pad body are staggered in the direction of the track line.

4. The fast spring clip insulation fastener structure for rail according to claim 1, characterized in that: The downward turning length of the downward turning plate is 6 mm to 8 mm.

5. The fast spring clip insulation fastener structure for rail according to claim 1, characterized in that: The upper flap is made of ceramic material, and the outer surface of the upper flap is coated with a polymer wear-resistant insulating coating.

6. The fast spring clip insulation fastener structure for rail according to claim 1, characterized in that: The bottom plate and the shoulder guard are integrally die-cast; the bottom plate is made of alloy steel, and the shoulder guard is made of aluminum alloy.

7. The fast spring clip insulation fastener structure for rail according to claim 1, characterized in that: An insulating cap is provided at the end of the fast spring bar, and a plurality of drainage holes are provided at the bottom of the insulating cap.

8. The fast spring clip insulation fastener structure for rail according to claim 1, characterized in that: The fast spring bar arranged in the shoulder is fixed to the bottom plate by bolts, and the outer wall outside the bolt is provided with a sleeve, the diameter of the sleeve is 35mm to 53mm, and the thread pitch on the sleeve is 10mm to 16mm.

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