Anti-loose self-locking fastening device for railway overhead line system
By adopting a combination of structures such as flat cantilever arms, mounting clamps, fastening mechanisms, and screws on the railway contact wire, the self-locking and clamping fixation of the catenary wire is achieved, solving the problem of lateral movement of the catenary wire when pulled by external factors, and improving stability and firmness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YUEMA FASTENER CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-07-07
AI Technical Summary
The catenary cables on existing railway catenary systems are difficult to self-lock, causing them to move laterally when pulled by external factors, affecting stability and robustness.
It adopts a combination structure including a flat arm, mounting clamp, fastening mechanism, screw and anti-loosening clamp. The self-locking and clamping fixation of the load-bearing cable is achieved by threaded connection and knob rotation. The bidirectional thread drives the connecting block to move closer for self-locking and fastening.
It achieves stable positioning and self-locking fastening of the catenary, prevents lateral movement, and improves the stability and robustness of the railway catenary.
Smart Images
Figure CN224465708U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of railway catenary fastening, and in particular to an anti-loosening self-locking fastening device for railway catenary. Background Technology
[0002] The railway overhead contact system is the core power supply system of electrified railways. It is erected along the railway line and provides power to electric locomotives or EMUs through pantographs.
[0003] The existing railway catenary is supported and installed using positioning clamps. While this provides support, it is difficult to self-lock the catenary's lateral movement. Consequently, when the catenary is pulled by external factors, it can move laterally within the positioning clamps. Therefore, a self-locking anti-loosening fastening device for railway catenary is needed. Utility Model Content
[0004] In order to improve the stability and firmness of the catenary during use, this application provides a self-locking fastening device for railway catenary.
[0005] The technical solution of the anti-loosening self-locking fastening device for railway catenary provided in this application is as follows: An anti-loosening self-locking fastening device for railway catenary includes a flat wrist arm, on which two first mounting clips are provided, and on which fastening mechanisms are provided in the first mounting clips.
[0006] The fastening mechanism includes a mounting base fixedly mounted on one of the first mounting clips. The mounting base has a mounting hole and a U-shaped frame inside. A corresponding fastening block is fixedly mounted on the bottom of the U-shaped frame. A load-bearing cable is provided in the mounting hole. Both the mounting base and the U-shaped frame have corresponding insertion holes. Insertion pins are provided in the insertion holes. Threads are provided on both outer surfaces of the insertion pins, and nuts are screwed onto the threads.
[0007] The fastening mechanism also includes a screw that is rotatably installed in the mounting base. Two connecting blocks are symmetrically screwed onto the screw. The bottom of each connecting block is fixedly installed with a corresponding anti-loosening clamp that contacts the load-bearing cable. One end of the screw passes through one side of the mounting base and is fixedly installed with a knob.
[0008] By adopting the above technical solution, the U-shaped frame can be installed by installing the catenary cable in the mounting hole on the mounting base, and the catenary cable can be self-locked and fixed by the fastening block. At this time, the insert can be inserted into the insertion hole and the nut can be turned to complete the positioning and installation of the U-shaped frame. Then, by turning the knob, the knob will drive the screw to rotate, and drive the two connecting blocks and two anti-loosening clamps to move closer to each other, and clamp and fix both sides of the catenary cable. By positioning and fixing the top and both sides of the catenary cable, the anti-loosening and self-locking fastening functions can be further achieved.
[0009] Preferably, the screw is provided with a bidirectional thread, the two connecting blocks are located between the corresponding fastening blocks, and the two anti-loosening clips are provided with corresponding anti-slip raised pads.
[0010] By adopting the above technical solution and using a two-way threaded screw, the two connecting blocks can be moved closer to each other or further apart.
[0011] Preferably, the two first mounting clips are screwed with first bolts.
[0012] By adopting the above technical solution, the installation can be assisted by setting the first mounting clip and the first bolt.
[0013] Preferably, the load-bearing cable is fitted with two second mounting clips, and the two second mounting clips are screwed with second bolts.
[0014] By adopting the above technical solution, the second mounting clip and the second bolt can be used to assist in installation and positioning.
[0015] Preferably, a suspension string is fixedly installed at the bottom of the second mounting clip, and a third mounting clip is fixedly installed at one end of the suspension string.
[0016] By adopting the above technical solution, the installation can be supported by setting up suspension wires.
[0017] Preferably, a third bolt is screwed onto the third mounting clip.
[0018] By adopting the above technical solution, the installation can be aided by setting a third mounting clip and a third bolt.
[0019] Preferably, the third mounting clip is provided with a contact wire.
[0020] By adopting the above technical solution, the contact wire can be limited and installed by setting a third mounting clip. The catenary can be supported and installed by the second mounting clip and the second bolt, and the dropper can be installed by the second mounting clip. The contact wire can be supported and installed by the third mounting clip and the third bolt.
[0021] In summary, this application includes at least one of the following beneficial technical effects:
[0022] 1. This application utilizes a mounting base and other components to install the load-bearing cable into the mounting hole on the mounting base, thereby installing the U-shaped frame. The load-bearing cable is self-locked and fixed by fastening blocks. By rotating a knob, the screw is rotated, causing the two connecting blocks and two anti-loosening clamps to move closer together and clamp and fix both sides of the load-bearing cable. By positioning and fixing the top and sides of the load-bearing cable, it can further achieve the functions of anti-loosening and self-locking fastening.
[0023] 2. In this application, with the cooperation of a second mounting clip, the catenary can be supported and installed by the second mounting clip and the second bolt, the dropper can be installed by the second mounting clip, and the contact wire can be supported and installed by the third mounting clip and the third bolt. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of a railway catenary anti-loosening self-locking fastening device according to an embodiment of this application;
[0025] Figure 2 This is a schematic diagram illustrating the overall fastening structure of the embodiments of this application;
[0026] Figure 3 This is a partial unfolded schematic diagram illustrating the fastening structure in the embodiments of this application;
[0027] Figure 4 This is a schematic diagram illustrating the main installation structure of the embodiments of this application;
[0028] Reference numerals: 1. Flat arm; 2. Load-bearing cable; 3. First mounting clip; 4. First bolt; 5. Mounting base; 6. Second mounting clip; 7. Second bolt; 8. Dropper string; 9. Contact wire; 10. Third mounting clip; 11. Third bolt; 12. Mounting hole; 13. U-shaped bracket; 14. Fastening block; 15. Insertion hole; 16. Insertion post; 17. Thread; 18. Nut; 19. Screw; 20. Knob; 21. Connecting block; 22. Anti-loosening clip. Detailed Implementation
[0029] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.
[0030] This application discloses an anti-loosening self-locking fastening device for railway catenary.
[0031] Reference Figure 1-3 A railway contact wire anti-loosening self-locking fastening device includes a flat cantilever arm 1, which is installed in conjunction with an existing insulator. The flat cantilever arm 1 is provided with two first mounting clips 3 and a fastening mechanism is provided on the first mounting clips 3. By setting the fastening mechanism, it can play the role of anti-loosening and self-locking fastening.
[0032] The fastening mechanism includes a mounting base 5 fixedly installed on one of the first mounting clips 3. The mounting base 5 has a mounting hole 12 and a U-shaped frame 13 inside. A corresponding fastening block 14 is fixedly installed at the bottom of the U-shaped frame 13. A load-bearing cable 2 is installed in the mounting hole 12. The load-bearing cable 2 can be positioned and supported by the mounting hole 12. The load-bearing cable 2 can be further positioned and installed by the U-shaped frame 13 and the fastening block 14.
[0033] The mounting base 5 and the U-shaped frame 13 are provided with corresponding insertion holes 15. Insertion posts 16 are provided in the insertion holes 15. The insertion posts 16 can play an auxiliary role in installation. The outer surfaces of both sides of the insertion posts 16 are provided with threads 17. Nuts 18 are screwed onto the threads 17. The nuts 18 can be used to cooperate with the threads 17 for installation and to connect and fix the insertion posts 16.
[0034] It also includes a screw 19 rotatably installed in the mounting base 5. Two connecting blocks 21 are symmetrically screwed onto the screw 19. The bottom of each connecting block 21 is fixedly installed with a corresponding anti-loosening clip 22 that contacts the load-bearing cable 2. One end of the screw 19 passes through one side of the mounting base 5 and is fixedly installed with a knob 20.
[0035] The screw 19 has a bidirectional thread, the two connecting blocks 21 are located between the corresponding fastening blocks 14, and the two anti-loosening clips 22 are provided with corresponding anti-slip raised pads.
[0036] Among them, two first mounting clips 3 are screwed with first bolts 4, and two second mounting clips 6 are sleeved on the load-bearing cable 2. The two second mounting clips 6 are screwed with second bolts 7. By setting the second bolts 7, the second mounting clips 6 can be positioned and installed.
[0037] In use, the first mounting clip 3 is installed on the flat arm 1 using the first bolt 4. At this time, the load-bearing cable 2 can be installed in the mounting hole 12 on the mounting base 5, and the U-shaped frame 13 can be installed. The load-bearing cable 2 is self-locked and fixed by the fastening block 14. The insert post 16 can be inserted into the insertion hole 15, and the nut 18 can be rotated to complete the positioning and installation of the U-shaped frame 13. Then, by rotating the knob 20, the knob 20 will rotate and drive the screw 19 to rotate, and drive the two connecting blocks 21 and the two anti-loosening clips 22 to move closer to each other, and clamp and fix the two sides of the load-bearing cable 2. By positioning and fixing the top and sides of the load-bearing cable 2, it can play the role of anti-loosening and self-locking fastening.
[0038] Reference Figure 2-4 The fastening mechanism also includes a dropper 8 fixedly installed at the bottom of the second mounting clip 6. A third mounting clip 10 is fixedly installed at one end of the dropper 8. A third bolt 11 is screwed onto the third mounting clip 10. The third mounting clip 10 can be connected and installed by setting the third bolt 11. A contact wire 9 is provided inside the third mounting clip 10. The contact wire 9 directly contacts the pantograph of the electric locomotive to conduct current. The catenary 2 is used to bear the weight of the contact wire 9 and maintain the tension of the line. The contact wire 9 and the catenary 2 are both existing technologies, so the specific structure and connection process are not described in detail.
[0039] In use, the catenary cable 2 can be supported and installed by the second mounting clip 6 and the second bolt 7, the dropper 8 can be installed by the second mounting clip 6, and the contact wire 9 can be supported and installed by the third mounting clip 10 and the third bolt 11.
[0040] The implementation principle of the anti-loosening self-locking fastening device for railway contact network in this application embodiment is as follows: In use, firstly, the first mounting clip 3 is installed on the flat cantilever arm 1 by the first bolt 4. At this time, the catenary cable 2 can be installed in the mounting hole 12 on the mounting base 5 and located in the two anti-loosening clips 22. At this time, the U-shaped frame 13 can be installed, and the top position of the catenary cable 2 is self-locked by the fastening block 14. At this time, the insert post 16 can be inserted into the insert hole 15, and the nut 18 can be rotated to complete the positioning and installation of the U-shaped frame 13. Then, by rotating the knob 20, the knob 20 will rotate and drive the screw 19 to rotate, and drive the two connecting blocks 21 and the two anti-loosening clips 22 to move closer to each other, and clamp and fix the two sides of the catenary cable 2. By positioning and fixing the top and the two sides of the catenary cable 2, the anti-loosening and self-locking fastening functions can be further achieved.
[0041] The catenary cable 2 can be supported and installed by the second mounting clip 6 and the second bolt 7, the dropper 8 can be installed by the second mounting clip 6, and the contact wire 9 can be supported and installed by the third mounting clip 10 and the third bolt 11.
[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A self-locking anti-loosening fastening device for railway overhead contact lines, comprising a flat cantilever arm (1), characterized in that: The flat wrist arm (1) is provided with two first mounting clips (3), and the first mounting clips (3) are provided with fastening mechanisms; The fastening mechanism includes a mounting base (5) fixedly installed on one of the first mounting clips (3), a mounting hole (12) is provided on the mounting base (5), a U-shaped frame (13) is provided inside the mounting base (5), a corresponding fastening block (14) is fixedly installed at the bottom of the U-shaped frame (13), a load-bearing cable (2) is provided inside the mounting hole (12), a corresponding insertion hole (15) is provided on both the mounting base (5) and the U-shaped frame (13), a insertion post (16) is provided inside the insertion hole (15), and threads (17) are provided on both outer surfaces of the insertion post (16), and a nut (18) is screwed onto the thread (17). The fastening mechanism also includes a screw (19) rotatably installed in the mounting base (5). Two connecting blocks (21) are symmetrically screwed onto the screw (19). The bottom of each of the two connecting blocks (21) is fixedly installed with a corresponding anti-loosening clip (22) that contacts the load-bearing cable (2). One end of the screw (19) passes through one side of the mounting base (5) and is fixedly installed with a knob (20).
2. The anti-loosening self-locking fastening device for railway contact wire according to claim 1, characterized in that: The screw (19) is provided with a bidirectional thread, and the two connecting blocks (21) are located between the corresponding fastening blocks (14). The two anti-loosening clips (22) are provided with corresponding anti-slip protrusions.
3. The anti-loosening self-locking fastening device for railway contact wire according to claim 1, characterized in that: Two first mounting clips (3) are screwed with first bolts (4).
4. The anti-loosening self-locking fastening device for railway contact wire according to claim 1, characterized in that: Two second mounting clips (6) are fitted on the load-bearing cable (2), and two second bolts (7) are screwed onto the two second mounting clips (6).
5. The anti-loosening self-locking fastening device for railway contact wire according to claim 4, characterized in that: The bottom of the second mounting clip (6) is fixedly mounted with a suspension string (8), and one end of the suspension string (8) is fixedly mounted with a third mounting clip (10).
6. The anti-loosening self-locking fastening device for railway contact wire according to claim 5, characterized in that: A third bolt (11) is screwed onto the third mounting clip (10).
7. A self-locking anti-loosening fastening device for railway contact wire according to claim 6, characterized in that: The third mounting clip (10) is provided with a contact wire (9).