High-toughness wear-resistant fastening connecting piece for rail transit

Abstract

The utility model discloses a high-toughness wear-resistant rail transit fastening connecting piece which comprises an installation bottom plate and supporting seats, a rail seat is installed in the middle of the top end of the installation bottom plate, the supporting seats are fixedly connected to the two sides of the top end of the installation bottom plate, and limiting seats are installed on one sides of the supporting seats. The upper portion of the outer side of the fastening screw rod is sleeved with an anti-loosening structure, the anti-loosening structure comprises a blocking column, an anti-skid nut, an inserting groove, a positioning base, a torsion spring, a positioning column and a clamping groove, the blocking column is fixedly connected to the top end of the limiting base, a limiting reinforcing structure is arranged on one side of the bottom of the limiting base, and a limiting groove is formed in one side of the limiting base in a clamped mode. After the anti-skid nut is screwed down, the positioning seat is installed on the top of the anti-skid nut, the positioning column is inserted into the inserting groove, the torsion spring arranged on the outer side of the anti-skid nut in a sleeving mode is connected with the blocking column, the torsion direction of the torsion spring is the same as the screwing rotation direction of the anti-skid nut, and therefore kinetic energy compensation is conducted on rotation of the anti-skid nut.

Description

Technical Field

[0001] This utility model relates to the technical field of fasteners for rail transit, and in particular to a high-toughness and wear-resistant fastener for rail transit. Background Technology

[0002] As one of the important components for the safety of rail transit, fastening connectors are often installed at the joints of rails during the track laying process to ensure the stability between rails and prevent tilting or shifting after long-term use.

[0003] Common rail transit fastening connectors mostly use multiple bolts on the base to limit and secure the rails on both sides, preventing them from tilting or shaking during use. While these common fastening connectors offer good sturdiness, some problems still exist:

[0004] Common fasteners are prone to loosening due to vibrations from train movement during prolonged use, requiring significant time for regular maintenance. Utility Model Content

[0005] The purpose of this invention is to provide a high-toughness and wear-resistant fastener for rail transit, in order to solve the defect that the bolts of existing fasteners for rail transit are prone to loosening after long-term use.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-toughness and wear-resistant fastening connector for rail transit, including a mounting base plate and a support base. A rail seat is installed at the middle position of the top of the mounting base plate. Support bases are fixedly connected to both sides of the top of the mounting base plate. A limit seat is installed on one side of the support base. A fastening screw is fixedly connected to one side of the top of the support base. An anti-loosening structure is sleeved on the upper outer side of the fastening screw. The anti-loosening structure includes a stop post, an anti-slip nut, a slot, a positioning seat, a torsion spring, a positioning post, and a slot. The stop post is fixedly connected to the top of the limit seat. A limit reinforcement structure is provided on one side of the bottom of the limit seat. A limit groove is provided inside one side of the limit seat.

[0007] When using this fastening connector, the mounting base plate is embedded in the ground at the connection point of the track seat and fixed. The limiting seat is pressed against both sides of the track seat and fastened with fastening screws, so that the two sides of the track seat are limited and pressed by the limiting seat, thereby keeping the track seat stable after installation.

[0008] Preferably, several support seats are fixedly connected to both sides of the top of the mounting base plate, and the several support seats are distributed at equal intervals on both sides of the top of the mounting base plate. The support seats and the limiting seats are made of high-performance alloy steel, and are specially processed and coated with a corresponding coating to improve the toughness and wear resistance of the fastener.

[0009] Preferably, the limiting and reinforcing structure includes an inclined groove, a plug, a reinforcing screw, a guide groove, and a baffle. The inclined groove is formed inside one side of the limiting seat. A plug is installed inside the inclined groove. A reinforcing screw is fixedly connected to one end of the plug. A guide groove is formed on one side of the support seat. A baffle is fixedly connected to one end of the support seat.

[0010] Preferably, the inclined groove and the guide groove are on the same horizontal plane, and the inclined groove, the guide groove and the insert block are in an embedded structure, so that the limiting seat can be closely attached to the side of the track seat as the insert block is continuously inserted.

[0011] Preferably, an anti-slip nut is threaded onto the upper part of the outer wall of the fastening screw. A slot is provided inside the top of the anti-slip nut. A positioning seat is installed on the top of the anti-slip nut. A torsion spring is sleeved on the outer side of the positioning seat. A positioning post is fixedly connected to the bottom of the positioning seat. A slot is provided on the top of the outer wall of the positioning seat. Under the action of the torsion spring, the kinetic energy of the anti-slip nut in the tightening direction can be compensated.

[0012] Preferably, the anti-slip nut and the fastening screw are connected by a thread, and the slot and the positioning post are embedded in each other, thereby reinforcing the installation of the positioning seat.

[0013] Preferably, the positioning pins are arranged in a ring at the bottom of the positioning seat, so as to keep the torque transmission of the torsion spring to the anti-slip nut stable.

[0014] Compared with the prior art, the beneficial effects of this utility model are: by using the reverse torque provided by the torsion spring to the anti-slip nut, the threaded connection between the anti-slip nut and the fastening screw is always kept tight. At the same time, the insert is embedded between the support seat and the limiting seat. As the insert is continuously inserted, it will push the limiting seat to press against the track seat, thereby limiting the track seat.

[0015] 1. After the anti-slip nut is tightened, install the positioning seat on the top of the anti-slip nut, insert the positioning pin into the slot, and connect the torsion spring sleeved on the outside of the anti-slip nut to the stop pin. The torsion direction of the torsion spring is the same as the rotation direction of the anti-slip nut when it is tightened, so as to compensate for the rotational kinetic energy of the anti-slip nut.

[0016] 2. Insert the insert block into the inner side of the inclined groove and guide groove, and tighten the reinforcing screw through the baffle and tighten it with a nut. As the nut is tightened, the insert block will push the limiting seat to move towards the side of the track seat and fit tightly, thereby reinforcing the pressing and limiting of the track seat. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional partial disassembly structure of this utility model;

[0019] Figure 3 This is a three-dimensional partial disassembly diagram of the anti-loosening structure of this utility model;

[0020] Figure 4 For the present utility model Figure 1 Enlarged cross-sectional view of point A in the middle section;

[0021] Figure 5 This is a three-dimensional partial structural diagram of the anti-loosening structure of this utility model.

[0022] In the diagram: 1. Mounting base plate; 2. Track seat; 3. Support seat; 4. Limit seat; 5. Limiting reinforcement structure; 501. Inclined groove; 502. Insert block; 503. Reinforcing screw; 504. Guide groove; 505. Baffle; 6. Fastening screw; 7. Anti-loosening structure; 701. Stop post; 702. Anti-slip nut; 703. Slot; 704. Positioning seat; 705. Torsion spring; 706. Positioning post; 707. Slot; 8. Limit groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5This utility model provides a high-toughness and wear-resistant fastening connector for rail transit, including a mounting base plate 1 and a support base 3. A rail seat 2 is installed at the middle position of the top of the mounting base plate 1. Support bases 3 are fixedly connected to both sides of the top of the mounting base plate 1. A limit seat 4 is installed on one side of the support base 3. Several support bases 3 are fixedly connected to both sides of the top of the mounting base plate 1, and the several support bases 3 are evenly distributed on both sides of the top of the mounting base plate 1. A fastening screw 6 is fixedly connected to one side of the top of the support base 3. A limit groove 8 is provided inside one side of the limit seat 4. A limit groove 8 is provided on one side of the bottom of the limit seat 4. A limiting and reinforcing structure 5 is provided. The limiting and reinforcing structure 5 includes an inclined groove 501, a plug 502, a reinforcing screw 503, a guide groove 504, and a baffle 505. The inclined groove 501 is opened inside the lower side of the limiting seat 4. The plug 502 is installed on the inner side of the inclined groove 501. One end of the plug 502 is fixedly connected to the reinforcing screw 503. A guide groove 504 is opened on one side of the support seat 3. One end of the support seat 3 is fixedly connected to the baffle 505. The inclined groove 501 and the guide groove 504 are on the same horizontal plane. The inclined groove 501, the guide groove 504, and the plug 502 form an embedded structure.

[0025] See attached document Figure 1 , Figure 2 and Figure 3 When this rail transit fastening connector is used, the limiting seat 4 is installed on one side of the support seat 3 and abuts against both sides of the rail seat 2 to keep the installation of the rail seat 2 stable. To reinforce the limiting pressure of the limiting seat 4, an inclined groove 501 is opened at the bottom of one side of the limiting seat 4, and a flat guide groove 504 is opened on one side of the support seat 3. Then, the insert 502 is inserted into the inner side of the inclined groove 501 and the guide groove 504, with the inclined surface of the insert 502 facing the inclined groove 501. The reinforcing screw 503 passes through the baffle 505 and is tightened with a nut. As the nut is tightened, the insert 502 will continue to go deeper along the inclined groove 501 and move the limiting seat 4 toward the side of the rail seat 2 to fit tightly, thereby reinforcing the pressing and limiting of the rail seat 2.

[0026] An anti-loosening structure 7 is fitted on the upper outer side of the fastening screw 6. The anti-loosening structure 7 includes a stop post 701, an anti-slip nut 702, a slot 703, a positioning seat 704, a torsion spring 705, a positioning post 706, and a retaining groove 707. The stop post 701 is fixedly connected to the top of the limiting seat 4. The anti-slip nut 702 is threadedly connected to the upper outer wall of the fastening screw 6. The slot 703 is opened inside the top of the anti-slip nut 702. The positioning seat 704 is installed on the top of the anti-slip nut 702. The torsion spring 705 is fitted on the outer side of the positioning seat 704. The positioning post 706 is fixedly connected to the bottom of the positioning seat 704. The retaining groove 707 is opened at the top of the outer wall of the positioning seat 704. The anti-slip nut 702 and the fastening screw 6 are threadedly connected. The slot 703 and the positioning post 706 are embedded. The positioning posts 706 are distributed in a ring at the bottom of the positioning seat 704.

[0027] See attached document Figure 2 , Figure 3 , Figure 4 and Figure 5 When this rail transit fastening connector is used, tightening the fastening screw 6 with the anti-slip nut 702 reinforces the support seat 3 and the limiting seat 4 by pressing and limiting the track seat 2. However, as the train moves along the track seat 2, vibrations occur, and with the continued vibration, the anti-slip nut 702 may loosen to some extent, thus reducing the fastening effect of the fastening connector. Therefore, a slot 703 is opened inside the top of the anti-slip nut 702. After the anti-slip nut 702 is tightened, the positioning seat 704 is installed. The anti-slip nut 702 is positioned on top, and the positioning pin 706 is inserted into the slot 703. The torsion spring 705, which is sleeved on the outside of the anti-slip nut 702, is connected to the stop pin 701. The torsion direction of the torsion spring 705 is the same as the tightening rotation direction of the anti-slip nut 702. This compensates for the rotational kinetic energy of the anti-slip nut 702, thereby preventing the anti-slip nut 702 from becoming loose. This also prevents the support base 3 and the limit base 4 from shaking during use, thus avoiding wear or reduced tightening effect due to shaking.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-toughness and wear-resistant fastener for rail transit, comprising a mounting base plate (1) and a support base (3); Its features are: A track seat (2) is installed at the middle position of the top of the mounting base plate (1), and support seats (3) are fixedly connected to both sides of the top of the mounting base plate (1). A limiting seat (4) is installed on one side of the support base (3). A fastening screw (6) is fixedly connected to one side of the top of the support base (3). An anti-loosening structure (7) is sleeved on the upper side of the fastening screw (6). The anti-loosening structure (7) includes a stop post (701), an anti-slip nut (702), a slot (703), a positioning seat (704), a torsion spring (705), a positioning post (706), and a slot (707). The stop post (701) is fixedly connected to the top of the limiting seat (4). A limiting reinforcement structure (5) is provided on one side of the bottom of the limiting seat (4), and a limiting groove (8) is provided inside one side of the limiting seat (4).

2. The high-toughness, wear-resistant fastener for rail transit according to claim 1, characterized in that: Several support bases (3) are fixedly connected to both sides of the top of the mounting base plate (1), and the several support bases (3) are distributed at equal intervals on both sides of the top of the mounting base plate (1).

3. The high-toughness, wear-resistant fastener for rail transit according to claim 1, characterized in that: The limiting and reinforcing structure (5) includes a sloping groove (501), a plug (502), a reinforcing screw (503), a guide groove (504), and a baffle (505). The sloping groove (501) is located inside the limiting seat (4) on one side. The plug (502) is installed on the inner side of the sloping groove (501). The reinforcing screw (503) is fixedly connected to one end of the plug (502). The guide groove (504) is provided on one side of the support seat (3). The baffle (505) is fixedly connected to one end of the support seat (3).

4. A high-toughness, wear-resistant fastener for rail transit according to claim 3, characterized in that: The inclined groove (501) and the guide groove (504) are on the same horizontal plane, and the inclined groove (501), the guide groove (504) and the insert (502) are in an inlay structure.

5. A high-toughness, wear-resistant fastener for rail transit according to claim 1, characterized in that: An anti-slip nut (702) is threaded onto the upper part of the outer wall of the fastening screw (6). A slot (703) is provided inside the top of the anti-slip nut (702). A positioning seat (704) is installed on the top of the anti-slip nut (702). A torsion spring (705) is sleeved on the outer side of the positioning seat (704). A positioning post (706) is fixedly connected to the bottom of the positioning seat (704). A slot (707) is provided at the top of the outer wall of the positioning seat (704).

6. A high-toughness, wear-resistant fastener for rail transit according to claim 5, characterized in that: The anti-slip nut (702) and the fastening screw (6) are connected by a thread, and the slot (703) and the positioning post (706) are embedded.

7. A high-toughness, wear-resistant fastener for rail transit according to claim 5, characterized in that: The positioning posts (706) are arranged in a ring at the bottom of the positioning base (704).

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