Railway track anti-loosening fastening structure easy to manufacture in batch
By using hexagon nuts and B-shaped washers and using thick plate parts to stamp and form them in one-time, the problems of high production costs and complex structures for anti-loosening fastening structures for existing railway tracks have been solved, and a lower cost and more ideal use effect is achieved.
Patent Information
- Application Number
- CN202421740924.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The production cost of existing railway tracks is high for anti-loosening fastening structures, and the structure is complex and difficult to form in one piece through the traditional flow-through continuous stamping process.
Hexagon nuts and B special-shaped washer are used. The bottom surface of the hexagon nut is equipped with a circle of B anti-slip teeth. The B special-shaped washer is stamped in one piece of equal thickness, including a clamping bending piece, punching piece and elastic curling piece.
It reduces production costs, simplifies the processing process, improves the use effect, and makes batch manufacturing more convenient.
Smart Images
Figure CN222975568U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fasteners, and relates to an anti-loosening fastening structure for railway tracks that is easy to manufacture in batches. Background Art
[0002] The reliability of the anti-loosening fastening structure for railway tracks is crucial for the safety of railway operation. Due to the large quantity used, the manufacturing cost issue must also be considered.
[0003] There are many forms of the anti-loosening fastening structure for railway tracks in the prior art.
[0004] For example: In the technical solution of an anti-loosening fastening structure for railway tracks with the application number 2024210636440 and the name "An Anti-loosening Fastening Structure for Railway Tracks" previously submitted by the applicant, an anti-loosening fastening structure for railway tracks is disclosed. As Figures 1 to 3 shown, an anti-loosening fastening structure for railway tracks, the railway track includes sleepers 4 arranged at intervals, an I-beam rail 1 erected on the sleepers 4. A rubber cushion plate 8 is provided at the crimping part of the I-beam rail 1 and the sleepers 4. Corresponding gauge blocks 6 are respectively abutted on both sides of the bottom cross-block part of the I-beam rail 1. Corresponding spikes 2 protruding from the gauge blocks 6 are arranged on the sleepers 4 at the corresponding positions below the gauge blocks 6. A spring clip 7 is sleeved on the spike 2. The overall outer contour of the spring clip 7 formed by an elastic steel strip through multiple back-and-forth bends is in the shape of an arch frame. One arch foot of the spring clip 7 is crimped on the top surface of the corresponding cross-block on the bottom cross-block of the I-beam rail 1, and the other arch foot of the spring clip 7 is crimped on the top surface of the corresponding gauge block 6. A washer member is crimped on the arch top of the spring clip 7, and a nut screwed onto the spike 2 is arranged on the washer member. The nut is a flange nut 3, and a circle of anti-slip teeth 3a is provided on the bottom surface of the flange part of the flange nut 3; the washer member is a special-shaped anti-slip washer 5 for type A. The special-shaped anti-slip washer 5 for type A includes a washer body 5g for type A. Opposite sides of the washer body 5g for type A are respectively provided with downwardly bent positioning pieces 5e for type A and positioning pieces 5f for type B. The positioning piece 5e for type A and the positioning piece 5f for type B are respectively anti-rotationally clamped with the corresponding elastic steel strips of the spring clip 7; an opening part is formed in the ring part of the washer body 5g for type A located between the two positioning pieces; arc-shaped connecting arms 5c for type A and connecting arms 5d for type B are respectively arranged on the two opening edges of the opening part; the ends of the two connecting arms are arranged adjacent to each other. A tooth 5a for type A is provided on the top surface of the end of the connecting arm 5c for type A, and a tooth 5b for type B is provided on the top surface of the end of the connecting arm 5d for type B.
[0005] The thickness of the connecting arm 5c for type A and the connecting arm 5d for type B is less than the thickness of the washer body 5g for type A.
[0006] The tooth 5a for type A and the tooth 5b for type B are adapted to the anti-slip teeth 3a.
[0007] The positional height of the tip parts of the tooth 5a for type A and the tooth 5b for type B is higher than the positional height of the top surface of the washer body 5g for type A.
[0008] The anti-loosening fastening structure of railway tracks adopting such technology can of course be used, but there are the following deficiencies:
[0009] The structure of its Type A anti-slip washer 5 is relatively complex. Although it can also be fully processed, since the thicknesses of its various parts are not equal, it is difficult to be formed at one time by using equal-thickness plate parts with the traditional flowing continuous stamping process, and the production cost is relatively high, and the use effect is not yet ideal enough. Utility Model Content
[0010] In order to overcome the deficiencies of the prior art, the present utility model provides an anti-loosening fastening structure for railway tracks that is easy to manufacture in batches.
[0011] The technical solution adopted by the present utility model to achieve the above technical purpose is: an anti-loosening fastening structure for railway tracks that is easy to manufacture in batches. The railway track includes sleepers arranged at intervals and an I-beam rail erected on the sleepers. A rubber cushion plate is provided at the crimping part of the I-beam rail and the sleeper. Corresponding gauge blocks are respectively arranged on both sides of the bottom cross-block part of the I-beam rail. Corresponding spikes protruding from the gauge blocks are arranged on the sleepers at the corresponding positions below the gauge blocks. A spring clip is sleeved on the spike. The overall outer contour of the spring clip formed by multiple back-and-forth bends of an elastic steel bar is in an arch-shaped frame. One arch foot of the spring clip is crimped on the top surface of the corresponding side of the bottom cross-block of the I-beam rail, and the other arch foot of the spring clip is crimped on the top surface of the corresponding side gauge block. A washer part is crimped on the arch top of the spring clip. A nut screwed to the spike is arranged on the washer part. The nut is a hexagonal nut, and a circle of Type B anti-slip teeth is provided on the bottom surface of the hexagonal nut; the washer part is a Type B special-shaped washer, and the Type B special-shaped washer includes a Type B washer body. A clamping bending piece bent downward is provided on one side of the Type B washer body. The clamping bending piece is anti-rotationally clamped with the elastic steel bar at the corresponding position of the spring clip; not less than one square punching opening is opened along the circumferential direction on the ring surface of the Type B special-shaped washer. An elastic warping piece warping upward is provided on one radial edge of the punching opening. The elastic warping piece is adapted to the Type B anti-slip teeth; the four parts of the Type B washer body, the clamping bending piece, the punching opening, and the elastic warping piece on the Type B special-shaped washer are formed at one time by equal-thickness plate parts.
[0012] Four punching openings are opened, and the four punching openings are equally angularly spaced along the circumferential direction of the Type B special-shaped washer. The four corresponding elastic warping pieces are rotationally symmetrically arranged along the central axis of the Type B special-shaped washer.
[0013] The equal-thickness plate part is a steel coil plate.
[0014] The beneficial effects of the present utility model are:
[0015] A. Since its nut is a hexagonal nut 9, and a circle of Type B anti-slip teeth 9a is provided on the bottom surface of the hexagonal nut 9; it is easier to process, uses less materials, and has a lower cost compared with the flange nut 3 adopted in the prior art;
[0016] B. Since its washer part is the second special-shaped washer 10, the second special-shaped washer 10 includes a second washer body 10g, and a clamping bending piece 10e that bends downward is provided on one side of the second washer body 10g. There is only one clamping bending piece 10e, which also saves materials. Compared with the two positioning pieces used in the prior art, it is easier to process and has a lower cost.
[0017] C. Since there are no less than one square punching K provided along the circumference on the ring surface of the second special-shaped washer 10, and an elastic warping piece C that warps upward is provided on a radial edge of the punching K, the elastic warping piece C is adapted to the second anti-slip teeth 9a; compared with the tooth-locking structure used in the prior art, it is easier to process and has a lower cost.
[0018] D. Since the four parts of the second washer body 10g, the clamping bending piece 10e, the punching K, and the elastic warping piece C on the second special-shaped washer 10 are formed by one-time stamping of plates with the same thickness, it is easier to process and has a lower cost.
[0019] In summary, the utility model is easier to process, has a lower cost, and has a more ideal use effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The following further describes the present utility model in conjunction with the drawings and embodiments. Among them:
[0021] Figure 1 is an installation application schematic diagram of the anti-loosening fastening structure for railway tracks in the prior art;
[0022] Figure 2 is an installation application omission schematic diagram of the anti-loosening fastening structure for railway tracks in the prior art;
[0023] Figure 3 is a further omission schematic diagram of the anti-loosening fastening structure for railway tracks in the prior art;
[0024] Figure 4 is an omission schematic diagram of the present utility model;
[0025] Figure 5 is a further omission schematic diagram of the present utility model;
[0026] Figure 6 is a schematic diagram of the second special-shaped anti-slip washer in the present utility model;
[0027] Figure 7 is a schematic diagram of the second special-shaped anti-slip washer in another perspective of the present utility model.
[0028] The reference numerals in the drawings are explained as follows: I-shaped rail 1, spike 2, flange nut 3, anti-slip teeth a of the first type 3a, sleeper 4, anti-slip washer of the first special type 5, teeth a of the first type 5a, teeth b of the second type 5b, connecting arm c of the first type 5c, connecting arm d of the second type 5d, positioning piece e of the first type 5e, positioning piece f of the second type 5f, washer body g of the first type 5g, gauge block 6, elastic clip 7, rubber pad 8, hexagonal nut 9, anti-slip teeth a of the second type 9a, anti-slip washer of the second special type 10, bending piece with a positioning notch 10e, washer body g of the second type 10g, punching opening K, elastic warping piece C Detailed implementation mode
[0029] In an embodiment of the present utility model, as Figures 4 to 7 , and with reference to Figure 1 shown, a loosening-proof fastening structure for railway tracks that is easy to manufacture in batches. The railway tracks include sleepers 4 arranged at intervals and I-shaped rails 1 erected on the sleepers 4. A rubber pad 8 is provided at the crimping portion between the I-shaped rail 1 and the sleeper 4. Corresponding gauge blocks 6 are respectively provided on both sides of the bottom cross-block portion of the I-shaped rail 1. Corresponding spikes 2 protruding from the gauge blocks 6 are provided on the sleepers 4 at corresponding positions below the gauge blocks 6. An elastic clip 7 is sleeved on the spike 2. The overall outer contour of the elastic clip 7 formed by repeatedly bending an elastic steel strip back and forth is in the shape of an arch-shaped frame. One arch foot of the elastic clip 7 is crimped on the top surface of the corresponding cross-block on the bottom cross-block of the I-shaped rail 1, and the other arch foot of the elastic clip 7 is crimped on the top surface of the corresponding gauge block 6. A washer member is crimped on the arch top of the elastic clip 7, and a nut screwed onto the spike 2 is provided on the washer member. The nut is a hexagonal nut 9, and a circle of anti-slip teeth a of the second type 9a is provided on the bottom surface of the hexagonal nut 9; the washer member is an anti-slip washer of the second special type 10, and the anti-slip washer of the second special type 10 includes a washer body g of the second type 10g. A bending piece with a positioning notch 10e that bends downward is provided on one side of the washer body g of the second type 10g, and the bending piece with a positioning notch 10e is anti-rotationally clamped with the corresponding elastic steel strip of the elastic clip 7; at least one square punching opening K is provided along the circumferential direction on the ring surface of the anti-slip washer of the second special type 10. An elastic warping piece C that warps upward is provided on a radial edge of the punching opening K, and the elastic warping piece C is adapted to the anti-slip teeth a of the second type 9a; the four parts of the washer body g of the second type 10g, the bending piece with a positioning notch 10e, the punching opening K, and the elastic warping piece C on the anti-slip washer of the second special type 10 are formed by stamping a plate member with equal thickness in one step.
[0030] Four punching openings K are provided, and the four punching openings K are equally angularly spaced along the circumferential direction of the anti-slip washer of the second special type 10. The four corresponding elastic warping pieces C are rotationally symmetrically arranged along the central axis of the anti-slip washer of the second special type 10.
[0031] The plate member with equal thickness is a steel coil plate.
[0032] Further description of the present utility model:
[0033] In the production of the hexagonal nut 9 of the present utility model, since the anti-slip teeth a of the second type 9a need to be punched out simultaneously, the die needs to be correspondingly changed, and the rest of the process is the same as that of the traditional nut production process.
[0034] For the production of the special-shaped washer 10 of type B according to the present utility model, a steel coil plate is used as the raw material and continuously produced on a stamping production line. When designing the die, a combined die is adopted to form the punching and bending shapes in one step.
[0035] Except for the above-mentioned hexagonal nut 9 and special-shaped washer 10 of type B which are innovative designs, other related components are all common components used in traditional railway tracks without any changes.
[0036] The produced hexagonal nuts 9 and special-shaped washers 10 of type B can be batch heat-treated.
Claims
1. An anti-loosening fastening structure for railway tracks that is easy to mass-produce, the railway track comprising sleepers arranged at intervals, an I-rail mounted on the sleepers, a rubber pad being provided at the crimping position between the I-rail and the sleeper, corresponding gauge baffles being respectively provided on both sides of the bottom cross block of the I-rail, corresponding spikes extending out of the gauge baffles being provided on the sleepers at the corresponding positions below the gauge baffles, an elastic bar being sleeved on the spikes, the overall outer contour of the elastic bar formed by a plurality of back-and-forth bending of an elastic steel bar being in an arched frame shape, one arch foot of the elastic bar being crimped to the top surface of the cross block on the corresponding side of the bottom cross block of the I-rail, the other arch foot of the elastic bar being crimped to the top surface of the gauge baffle on the corresponding side, a washer being crimped to the arch top of the elastic bar, a nut being screwed to the spikes being provided on the washer, and the characteristic is that: The nut is a hexagonal nut, and a circle of B anti-slip teeth is provided on the bottom surface of the hexagonal nut; the washer piece is a B special-shaped washer, and the B special-shaped washer includes a B washer body, and a downward-bent positioning bending piece is provided on one side of the B washer body, and the positioning bending piece is clamped with the elastic steel bar at the corresponding position of the elastic bar to prevent rotation; at least one square punching notch is provided on the circumference of the upper edge of the annular surface of the B special-shaped washer, and an upward-bent elastic flap is provided on a radial edge of the punching notch, and the elastic flap is adapted to the B anti-slip teeth; the B washer body, the positioning bending piece, the punching notch, and the elastic flap on the B special-shaped washer are formed by one-time stamping of plates of equal thickness.
2. The anti-loosening fastening structure for railway tracks that is easy to mass-produce according to claim 1 is characterized in that: There are four punching notches, which are distributed at equal angular intervals along the circumference of the special-shaped gasket, and four corresponding elastic flaps are rotationally symmetrically arranged along the central axis of the special-shaped gasket.
3. The anti-loosening fastening structure for railway tracks that is easy to mass-produce according to claim 2 is characterized in that: The plate parts of equal thickness are steel coils.