Rail transit flexible contact net convenient adjustment pendant

Abstract

The utility model discloses a kind of flexible catenary of rail transit convenient adjustment pendant, including U-shaped ring, adjusting bolt, suspender and pendant pull rope, the outer wall of adjusting bolt is sequentially provided with pin hole from top to bottom, the position of the top of adjusting bolt is located inside U-shaped ring and is provided with adjusting nut, the position between the bottom of adjusting bolt and suspender is positioned with fixed nut, the U-shaped ring is connected with suspender between and has tension connecting structure, suspender is provided with pull rope connecting piece on pendant pull rope, and pendant pull rope is connected with suspender, and the suspender includes two parts of non internal thread ring and heart-shaped ring.The utility model is convenient adjustment pendant of a kind of flexible catenary of rail transit, and the length of pendant is adjusted using the rotation of bolt and nut, it is simple, accurate, convenient to operate, and practical object is easily realized, improve adjustment efficiency, reduce artificial investment, it is easy to learn to operate simply, convenient for field operation.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and in particular to a convenient adjustable dropper for a flexible contact wire in rail transit. Background Technology

[0002] The length and tension of the catenary and contact wire on rail transit lines change with the weather temperature, which is the phenomenon of thermal expansion and contraction of materials as commonly known in physics. If this phenomenon exceeds its critical value, it will affect the normal operation of the train, and in severe cases, it will cause pantograph-catenary accidents. Therefore, it is necessary to frequently adjust the length and tension of the droppers between the catenary and contact wire. With the continuous development of technology, people have increasingly higher requirements for the manufacturing process of the flexible contact wire of rail transit that allows for convenient adjustment of the droppers.

[0003] The existing flexible contact wire droppers for rail transit have certain drawbacks in use. Because the droppers bear the weight of the contact wire, adjusting the length of the droppers is inefficient, labor-intensive, and inaccurate, which brings certain adverse effects to the actual use. Therefore, we propose a convenient adjustable dropper for the flexible contact wire of rail transit. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a convenient adjustable suspension string for flexible contact wires in rail transit. The length of the suspension string is adjusted by rotating bolts and nuts, which is simple, accurate, and convenient to operate. It is also easy to implement in practice, improving adjustment efficiency, reducing manual labor, and is easy to learn and operate, facilitating on-site work. It can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a convenient adjustable dropper for a flexible contact network of rail transit, comprising a U-shaped ring, an adjusting bolt, a dropper ring, and a dropper rope. The outer wall of the adjusting bolt is provided with pin holes from top to bottom. An adjusting nut is provided at the top of the adjusting bolt on the inner side of the U-shaped ring. A fixing nut is positioned between the bottom of the adjusting bolt and the dropper ring. A tension connection structure is connected between the U-shaped ring and the dropper ring. A rope connector is provided on the dropper rope, and the dropper rope is connected to the dropper ring.

[0006] Preferably, the lifting ring comprises two parts: a threadless circular ring and a heart-shaped ring. The heart-shaped ring is located at the bottom of the threadless circular ring. A locking clamp is positioned on the outer side of the upper end of the U-shaped ring. A positioning component is positioned through the locking clamp and the U-shaped ring. A nut is positioned at the end of the positioning component.

[0007] Preferably, the tension connection structure includes a first fixing ring, a first connector, a torsion spring, a second connector, and a second fixing ring. The first fixing ring is positioned on the bottom side of the U-shaped ring, the second fixing ring is positioned on the side of the lifting ring, and the torsion spring is located between the first fixing ring and the second fixing ring.

[0008] Preferably, the threadless circular ring and the heart-shaped ring are welded and fixed together, and the nut, positioning component and locking clamp are used to install and fix the U-shaped ring.

[0009] Preferably, one end of the torsion spring is positioned with the first fixing ring via a first connector, and the other end of the torsion spring is positioned with the second fixing ring via a second connector.

[0010] Preferably, the adjusting nut is welded to the U-shaped ring, and the length of the adjusting bolt is changed by rotating the adjusting bolt. The pin hole is used to insert a cotter pin to prevent the adjusting bolt from loosening and sliding down. The fixing nut is welded to the bottom of the adjusting bolt to rotate the adjusting bolt.

[0011] Compared with the prior art, this utility model provides a convenient adjustable dropper for flexible contact wire in rail transit, which has the following advantages: This convenient adjustable dropper for flexible contact wire in rail transit uses the rotation of bolts and nuts to adjust the length of the dropper, which is simple, accurate and convenient to operate, and easy to implement in practice, improving adjustment efficiency, reducing manual input, and is easy to learn and operate, which is convenient for on-site work. The entire convenient adjustable dropper structure of the flexible contact wire in rail transit is simple, easy to operate, and the effect of use is better than the traditional method. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a conveniently adjustable dropper for a flexible contact wire in rail transit according to this utility model.

[0013] Figure 2 This is a structural schematic diagram of point A in the convenient adjustable suspension string of a flexible contact wire for rail transit according to this utility model.

[0014] Figure 3 This is a structural schematic diagram of point B in the convenient adjustable suspension string of a flexible contact wire for rail transit according to this utility model.

[0015] Figure 4 This is a schematic diagram of the tension connection structure in the adjustable dropper of a flexible contact wire for rail transit according to this utility model.

[0016] In the diagram: 1. U-shaped ring; 2. Adjusting nut; 3. Pin hole; 4. Fixing nut; 5. Adjusting bolt; 6. Lifting ring; 7. Tension connection structure; 8. Pull rope connector; 9. Lifting string pull rope; 10. Threadless ring; 11. Heart-shaped ring; 12. Nut; 13. Locking clamp; 14. Positioning assembly; 15. First fixing ring; 16. First connector; 17. Torsion spring; 18. Second connector; 19. Second fixing ring. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings and specific embodiments.

[0018] like Figure 1-4 As shown, a convenient adjustable dropper wire for a flexible overhead contact system in rail transit includes a U-shaped ring, an adjusting bolt, a dropper ring, and a dropper wire rope. The outer wall of the adjusting bolt has pin holes arranged sequentially from top to bottom. An adjusting nut is located at the top of the adjusting bolt inside the U-shaped ring, and a fixing nut is positioned between the bottom of the adjusting bolt and the dropper ring. A tension connection structure connects the U-shaped ring and the dropper ring. A rope connector is provided on the dropper wire rope, and the dropper wire rope is connected to the dropper ring. The length of the dropper wire is adjusted by rotating the bolt and nut. The operation is simple, accurate, and convenient, and it is easily implemented, improving adjustment efficiency, reducing manual labor, and is easy to learn and operate, facilitating on-site work.

[0019] Furthermore, the lifting ring comprises two parts: a threadless circular ring and a heart-shaped ring. The heart-shaped ring is located at the bottom of the threadless circular ring. A locking clamp is positioned on the outer side of the upper end of the U-shaped ring. A positioning component is positioned through the locking clamp and the U-shaped ring. A nut is positioned at the end of the positioning component.

[0020] Furthermore, the tension connection structure includes a first fixing ring, a first connector, a torsion spring, a second connector, and a second fixing ring. The first fixing ring is positioned on the bottom side of the U-shaped ring, the second fixing ring is positioned on the side of the lifting ring, and the torsion spring is located between the first fixing ring and the second fixing ring.

[0021] Furthermore, the threadless circular ring and the heart-shaped ring are welded and fixed together, and the nut, positioning component and locking clamp are used to install and fix the U-shaped ring.

[0022] Furthermore, one end of the torsion spring is positioned with the first fixed ring via the first connector, and the other end of the torsion spring is positioned with the second fixed ring via the second connector.

[0023] Furthermore, the adjusting nut is welded to the U-shaped ring, and the length of the adjusting bolt is changed by rotating the adjusting bolt. The cotter pin is inserted into the pin hole to prevent the adjusting bolt from loosening and sliding down. The fixing nut is welded to the bottom of the adjusting bolt to rotate the adjusting bolt.

[0024] Working principle: This utility model includes a U-shaped ring, adjusting nut, pin hole, fixing nut, adjusting bolt, lifting ring, tension connection structure, pull rope connector, lifting string pull rope, threadless ring, heart-shaped ring, nut, locking clamp, positioning component, first fixing ring, first connector, torsion spring, second connector, and second fixing ring. The length of the lifting string is adjusted by rotating the bolt and nut. The operation is simple, accurate, and convenient. It is easy to implement in practice, improves adjustment efficiency, reduces manual labor, and is easy to learn and operate, making it convenient for on-site work.

[0025] During the time when the rail transit power is out of service, if it is necessary to adjust the length of the suspension cable, pull out the cotter pin, turn the fixing nut by hand or wrench to adjust it to the required height, and then insert the cotter pin into the appropriate position.

[0026] This invention addresses the problems of low efficiency, high workload, and inaccurate adjustments when changing the length of the dropper. It simplifies dropper adjustment, saves on manual maintenance costs, and reduces operating expenses.

[0027] U-ring: A device used to connect the load-bearing cable clamp and the adjusting bolt.

[0028] Adjusting nut: Welded onto the U-shaped ring, the length of the adjusting bolt is changed by rotating the adjusting bolt, thereby adjusting the length of the dropper.

[0029] Pin holes: Holes evenly distributed on the adjusting bolt, through which cotter pins pass to prevent the adjusting bolt from loosening and slipping.

[0030] Fixed nut: Welded to the bolt near the bolt head, allowing the wrench to be turned to rotate the adjusting bolt and thus adjust the height of the hanger.

[0031] Adjusting bolt: The length of the suspension cable is adjusted by engaging the threaded thread with the adjusting nut; the adjustable length is related to the bolt length. The middle section is a fixing nut, welded to the bolt, and the lower part passes through the ring at the head of the heart-shaped ring, allowing free rotation.

[0032] The lifting ring consists of two parts: the upper part is a threadless circular ring through which the adjusting bolt passes, allowing for free rotation; the lower part is a heart-shaped ring welded to the circular ring.

[0033] All parts used in the convenient adjustable suspender are commercially available, so there is no additional investment cost. It can also save 50% on labor and 75% on time costs, and its adjustment accuracy is superior to traditional adjustable suspenders. Adjusting a traditional adjustable suspender requires two people and takes an average of four minutes. Adjusting the convenient adjustable suspender, however, only requires one person and can be completed in one minute.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A convenient adjustable dropper for a flexible overhead contact line in rail transit, comprising a U-shaped ring (1), an adjusting bolt (5), a dropper ring (6), and a dropper rope (9), characterized in that: The outer wall of the adjusting bolt (5) is provided with pin holes (3) from top to bottom. The top of the adjusting bolt (5) is provided with an adjusting nut (2) located inside the U-shaped ring (1). The bottom of the adjusting bolt (5) is positioned between the lifting ring (6) and the fixing nut (4). The U-shaped ring (1) and the lifting ring (6) are connected by a tension connection structure (7). The suspension rope (9) is provided with a rope connector (8), and the suspension rope (9) is connected to the lifting ring (6).

2. The convenient adjustable dropper of the flexible contact wire for rail transit according to claim 1, characterized in that: The lifting ring (6) includes two parts: a threadless circular ring (10) and a heart-shaped ring (11). The heart-shaped ring (11) is located at the bottom of the threadless circular ring (10). A locking clip (13) is positioned on the outer side of the upper end of the U-shaped ring (1). A positioning component (14) is positioned through the locking clip (13) and the U-shaped ring (1). A nut (12) is positioned at the end of the positioning component (14).

3. The convenient adjustable dropper of the flexible contact wire for rail transit according to claim 1, characterized in that: The tension connection structure (7) includes a first fixing ring (15), a first connector (16), a torsion spring (17), a second connector (18), and a second fixing ring (19). The first fixing ring (15) is positioned on the bottom side of the U-shaped ring (1), and the second fixing ring (19) is positioned on the side of the lifting ring (6). The torsion spring (17) is located between the first fixing ring (15) and the second fixing ring (19).

4. The convenient adjustable dropper of a flexible contact wire for rail transit according to claim 2, characterized in that: The threadless circular ring (10) is welded and fixed to the heart-shaped ring (11), and the nut (12), positioning component (14) and locking clamp (13) are used to install and fix the U-shaped ring (1).

5. The convenient adjustable dropper of a flexible contact wire for rail transit according to claim 3, characterized in that: One end of the torsion spring (17) is positioned with the first fixing ring (15) via the first connector (16), and the other end of the torsion spring (17) is positioned with the second fixing ring (19) via the second connector (18).

6. The convenient adjustable dropper of the flexible contact wire for rail transit according to claim 1, characterized in that: The adjusting nut (2) is welded and installed on the U-shaped ring (1). The length of the adjusting bolt (5) is changed by rotating the adjusting bolt (5). The pin hole (3) is inserted with a cotter pin to prevent the adjusting bolt (5) from loosening and sliding down. The fixing nut (4) is welded to the bottom of the adjusting bolt (5) to rotate the adjusting bolt (5).

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