Railway overhead line system cantilever anti-falling pipe cap

Abstract

The utility model discloses an anti-falling pipe cap for a cantilever of a railway overhead line system. The anti-falling pipe cap comprises a pipe cap body, the pipe cap body is provided with an outer cylinder and an inner cylinder; the outer cylinder body can be in contact with the outer surface of the cantilever after being installed, the inner cylinder body can be in contact with the inner surface of the cantilever after being installed, a sealing ring is arranged between the outer cylinder body and the inner cylinder body, and a protruding block is arranged on the outer surface of the inner cylinder body; a threaded rod is arranged in the center of the pipe cap body, and a rhombic jacking assembly is arranged on the threaded rod and limited through a nut. According to the anti-falling pipe cap, the pipe cap and the cantilever are fastened by adopting an internal double anti-falling structure, so that the connection stability is improved; the anti-falling pipe cap is further provided with a sealing structure which can be connected with the end of the cantilever in a sealed mode, dust and water are prevented from entering the cantilever, the cantilever is prevented from being rusted, and the service life of the cantilever is prolonged. In addition, the assembling process of the pipe cap is simple, and convenience of installation and maintenance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrified railway contact net, specifically relates to a railway contact net cantilever anti -drop pipe cap. BACKGROUND

[0002] With the steady and rapid development of domestic and foreign high-speed railway and the continuous improvement of electrified railway operation speed, the stability of high-speed railway contact net power supply system is paid more and more attention. The railway contact net cantilever is a connecting device for traction electric locomotive through the contact net line on the railway, and is an important link connecting electric locomotive and contact net. It can realize the safe and reliable connection of locomotive and contact net, and transmit electric energy to the locomotive to provide power for the locomotive.

[0003] The pipe cap is sleeved on the top end of the railway contact net cantilever, which can play the role of dustproof and waterproof, protect the inside of the cantilever from erosion by sand and water, and prolong the service life of the cantilever. At present, the pipe caps used on the existing contact net cantilevers are made of synthetic rubber material and metal material. The inner cavity surface of the pipe cap made of synthetic rubber material adopts a design of concave conical surface transition inner cylindrical surface, so that the pipe cap can be connected with the cantilever by elastic deformation of the rubber during installation. However, in actual use, the vibration generated by the train running and the low head of the cantilever can easily cause the cantilever pipe cap body to loosen, and the reliability is low, which cannot meet the actual use requirement. The inner surface of the pipe cap made of metal material is a cylindrical surface, and there is a large gap between the cylindrical surface of the pipe cap and the cylindrical surface of the end of the cantilever after installation, so the sealing performance is poor, sand and water can easily enter the inside of the cantilever, causing corrosion of the cantilever. In addition, during assembly, the inner surface of the pipe cap and the cantilever are fastened by screws on the side of the pipe cap, which causes inconvenience in maintenance and assembly, increases the inspection and repair items of maintenance operation and the installation and fastening links, and increases the working time of maintenance and installation. TECHNICAL SOLUTION

[0004] In order to overcome the defects in the prior art, the utility model provides a railway contact net cantilever anti -drop pipe cap;The anti -drop pipe cap of the utility model adopts a specific structure design, has a double anti -drop structure, fastens the pipe cap and the cantilever, improves the stability of connection, effectively prevents the phenomenon that the pipe cap falls off due to vibration, wind force and other external forces, thereby ensuring the stability and safety of the contact net;The anti -drop pipe cap of the utility model is also provided with a sealing structure, which can be connected with the end of the cantilever after installation, thereby avoiding sand and water from entering the inside of the cantilever, preventing the cantilever from being corroded, and improving the service life of the cantilever;In addition, the assembly process of the anti -drop pipe cap and the cantilever of the utility model is relatively simple, only needs to be pressed into the cantilever, and the pipe cap can be fastened by rotating, and correspondingly, when maintenance is disassembled, the pipe cap can be loosened by rotating and taken out, which is simple in operation and improves the convenience of installation and maintenance.

[0005] The technical scheme of the utility model is as follows:

[0006] The utility model provides a railway overhead line system cantilever anti -falling pipe cap, including pipe cap body, the pipe cap body includes outer cylinder and inner cylinder, the outer cylinder can be contacted with the cantilever outer surface cooperation after installation, the inner cylinder can be contacted with the cantilever inner surface cooperation after installation, be equipped with sealing ring between the outer cylinder and the inner cylinder, the sealing ring can be contacted with the cantilever port after installation, the outer surface of the inner cylinder is equipped with the protruding block, the protruding block can be contacted with the inner wall of cantilever after installation, the central position of pipe cap body is equipped with connecting column, the front end of connecting column is fixedly equipped with threaded rod, be equipped with diamond top -tight component on threaded rod, the front and rear ends of diamond top -tight component are equipped with through -hole, threaded rod passes through the through -hole of diamond top -tight component both ends and is limited by nut, diamond top -tight component can expand to both sides under the extrusion of threaded rod in the axial direction.

[0007] Compared with the prior art, the railway overhead line system cantilever anti -falling pipe cap has made remarkable progress, as follows:

[0008] 1) the utility model discloses a railway overhead line system cantilever anti -falling pipe cap sets up double anti -falling structure, to fasten pipe cap and cantilever, one, the utility model discloses an anti -falling pipe cap sets up protruding block on the outer surface of inner cylinder, can be contacted with the inner surface of cantilever after pipe cap is installed on the cantilever, increase the friction between pipe cap and cantilever, enhance the stability of pipe cap and cantilever connection, two, set up the diamond top -tight component of compression expansion on pipe cap, after compression, its both sides can be tightened the inner wall of cantilever, ensure that pipe cap and cantilever are fixedly connected, effectively prevent the phenomenon that pipe cap falls off due to vibration, wind power and other external force, to ensure the stability and safety of overhead line system,

[0009] 2) the utility model discloses a railway overhead line system cantilever anti -falling pipe cap sets up sealing ring in the contact area of cantilever port and pipe cap, improves the sealing performance, effectively prevents the invasion of rainwater and moisture, reduces the rust and damage of cantilever, guarantees the reliability of overhead line system,

[0010] 3) the utility model discloses a railway overhead line system cantilever anti -falling pipe cap, when installing and disassembling, simple operation, when installing, adjust the distance between the left and right sides of diamond top -tight component, make it can be contacted with the inner surface of cantilever after installation, produce friction, subsequently press the anti -falling pipe cap of the utility model into the cantilever, rotate outer cylinder and can be fastened with cantilever, correspondingly, when disassembling, only need to rotate outer cylinder to loosen pipe cap, then take out, the installation and disassembly process is simple and fast, and the technical difficulty is low, reduces the installation cost, improves the convenience of overhaul.

[0011] Further, the inner cylinder surface is provided with a tangent plane, the tangent plane is provided with a springy rib, the convex block is arranged on the rib, and the convex block can be compressed inwards after being extruded by the inner surface of the cantilever arm.

[0012] Further, the diamond-shaped clamping assembly comprises an A clamping piece and a B clamping piece, the A clamping piece and the B clamping piece are V-shaped, the two ends of the A clamping piece are provided with connecting grooves, the two ends of the B clamping piece can be inserted into the connecting grooves, and the A clamping piece and the B clamping piece are connected to form a diamond-shaped structure.

[0013] Further, the diamond-shaped clamping assembly is provided with clamping blocks on the two sides, and the surface of the clamping block is arc-shaped and matched with the cantilever arm.

[0014] Further, the diamond-shaped clamping assembly is provided with a clamping block on the two sides, and the surface of the clamping block is arc-shaped and matched with the cantilever arm.

[0015] Further, the diamond-shaped clamping assembly is provided with a clamping block on the two sides, and the surface of the clamping block is arc-shaped and matched with the cantilever arm. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic diagram of a railway catenary cantilever anti-falling pipe cap.

[0017] Figure 2 It is a sectional view of the railway catenary cantilever anti-falling pipe cap.

[0018] Figure 3 It is an explosion view of a diamond-shaped clamping assembly in the railway catenary cantilever anti-falling pipe cap (the nut and the pad are not hidden in the figure).

[0019] Figure 4It is a structure diagram of the protruding block in the railway overhead line system wrist arm anti-falling pipe cap (the protruding block is shown in the figure, and the pipe cap body is partially cut off).

[0020] The marks in the drawings are: 1-outer cylinder body; 2-inner cylinder body; 201-protruding block; 2011-guide inclined surface; 202-cut surface; 2021-rib; 3-sealing ring; 4-threaded rod; 5-rhombic tightening assembly; 501-A tightening piece; 5011-connection groove; 502-B tightening piece; 503-tightening block; 5031-bump; 505-through hole; 6-nut; 7-mounting column; 8-pad. DETAILED DESCRIPTION

[0021] The utility model will be further explained in connection with the drawings and examples, but not as the basis for the utility model. The contents not explained in detail in the following examples are all the technical knowledge in the art.

[0022] Example (see Figures 1-4 ):

[0023] A railway overhead line system wrist arm anti-falling pipe cap, comprising a pipe cap body; the pipe cap body comprises an outer cylinder body 1 and an inner cylinder body 2; the outer cylinder body 1 can be in contact with the outer surface of the wrist arm after installation, and the inner cylinder body 2 can be in contact with the inner surface of the wrist arm after installation; a sealing ring 3 is arranged between the outer cylinder body 1 and the inner cylinder body 2, and the sealing ring 3 can abut against the wrist arm port after installation; a protruding block 201 is arranged on the outer surface of the inner cylinder body 2, and the protruding block 201 can abut against the inner wall of the wrist arm after installation; a connecting column 7 is arranged at the central part of the pipe cap body, and a threaded rod 4 is fixedly arranged at the front end of the connecting column 7; a rhombic tightening assembly 5 is arranged on the threaded rod 4, the rhombic tightening assembly 5 is provided with through holes 505 at the front and rear ends, the threaded rod 4 passes through the through holes 505 at the two ends of the rhombic tightening assembly 5, and the threaded rod 4 is limited by a nut 6; the rhombic tightening assembly 5 can expand to both sides after being extruded in the axial direction of the threaded rod 4; a pad 8 is sleeved on the threaded rod 4, and the pad 8 is located between the rhombic tightening assembly 5 and the mounting column 7; the nut 6 is fixedly connected with the rhombic tightening assembly 5.

[0024] In the example, the surface of the inner cylinder body 2 is provided with a cut surface 202, the cut surface 202 is provided with a rib 2021 capable of elastic deformation, the protruding block 201 is arranged on the rib 2021, and the protruding block 201 can be compressed inward after being extruded by the inner surface of the wrist arm. Arranging the protruding block 201 on the cut surface 202 of the inner cylinder body can make the protruding block 201 have more stable support, and enhance the reliability and stability of the connection.

[0025] In the embodiment, the front side of the convex block 201 is provided with a guide slope 2011. Through the design of the guide slope 2011, the pipe cap is easily mounted on the wrist arm.

[0026] In the embodiment, the rhombus clamping assembly 5 comprises an A clamping piece 501 and a B clamping piece 502, and the A clamping piece 501 and the B clamping piece 502 are V-shaped. The two ends of the A clamping piece 501 are provided with connecting grooves 5011, and the two ends of the B clamping piece 502 can be inserted into the connecting grooves 5011 to be connected with the A clamping piece 501 to form a rhombus structure. Through the combination of the A clamping piece 501 and the B clamping piece 502, the rhombus clamping assembly 5 is formed. When one clamping piece is damaged, only the damaged clamping piece needs to be replaced, and the whole part does not need to be replaced, thereby reducing the maintenance cost.

[0027] In the embodiment, the two sides of the rhombus clamping assembly 5 are respectively provided with clamping blocks 503, and the surface of the clamping block 503 is arc-shaped and matched with the wrist arm.

[0028] In the embodiment, the clamping block 503 is provided with convex points 5031 in groups. The design of the convex points 5031 can enhance the friction between the clamping block 503 and the inner surface of the wrist arm after fastening, thereby improving the stability of the connecting structure.

[0029] Before installation, the position of the adjusting nut 6 on the threaded rod 4 is adjusted, so that the rhombus clamping assembly 5 abuts against the cushion block 8, and the rhombus clamping assembly 5 is compressed, so that the distance between the front and rear ends of the rhombus clamping assembly 5 becomes smaller, and the distance between the two sides becomes larger, so that the two sides can contact the inner surface of the wrist arm after installation. After installation, the outer cylinder 1 is rotated to drive the threaded rod 4 to rotate. Since the two sides of the rhombus clamping assembly 5 contact the inner surface of the wrist arm, friction is generated, thereby preventing the rhombus clamping assembly 5 from rotating. The adjusting nut 6 can be displaced on the threaded rod 4 to compress the rhombus clamping assembly 5, so that the left and right sides of the rhombus clamping assembly 5 clamp the inner surface of the wrist arm.

[0030] The general description of the utility model involved in the present application and the description of the specific embodiments should not be understood as a limitation of the technical solutions of the utility model. Based on the disclosure of the present application, the skilled in the art can add, reduce or combine the disclosed technical features in the general description or / and the specific embodiments (including the embodiments) without violating the elements of the utility model involved, to form other technical solutions within the protection scope of the present application.

Claims

1. A railway catenary cantilever anti-falling pipe cap, comprising a pipe cap body; the pipe cap body comprises an outer cylinder (1) and an inner cylinder (2); the outer cylinder (1) can be in contact with the outer surface of the cantilever after installation, and the inner cylinder (2) can be in contact with the inner surface of the cantilever after installation; characterized in that: The outer cylinder (1) and the inner cylinder (2) are provided with a sealing ring (3) which can abut against the wrist arm port after installation; the outer surface of the inner cylinder (2) is provided with a protruding block (201) which can abut against the inner wall of the wrist arm after installation; the central part of the cap body is provided with a connecting column (7), and the front end of the connecting column (7) is fixedly provided with a threaded rod (4); the threaded rod (4) is provided with a rhombic tightening assembly (5), and the front and rear ends of the rhombic tightening assembly (5) are provided with through holes (505); the threaded rod (4) passes through the through holes (505) at the two ends of the rhombic tightening assembly (5) and is limited by a nut (6); the rhombic tightening assembly (5) can expand to both sides after being extruded in the axial direction of the threaded rod (4).

2. A catenary anti-drop cap for a railway overhead line according to claim 1, characterised in that: The inner cylinder (2) is provided with a cut surface (202), and the cut surface (202) is provided with a rib (2021) which can be elastically deformed, and the protruding block (201) is arranged on the rib (2021), and the protruding block (201) can be compressed inwardly after being extruded by the inner surface of the wrist arm.

3. A catenary anti-drop cap for a railway overhead line according to claim 2, characterised in that: The front side of the protruding block (201) is provided with a guide inclined surface (2011).

4. A catenary anti-drop cap for a railway overhead line according to claim 1, characterised in that: The rhombic tightening assembly (5) comprises an A tightening piece (501) and a B tightening piece (502), and the A tightening piece (501) and the B tightening piece (502) are V-shaped; the two ends of the A tightening piece (501) are provided with connecting grooves (5011), and the two ends of the B tightening piece (502) can be inserted into the connecting grooves (5011) to be connected with the A tightening piece (501) to form a rhombic structure.

5. A catenary anti-drop cap for a railway overhead line according to claim 1, characterized in that: The two sides of the rhombic tightening assembly (5) are respectively provided with a tightening block (503), and the surface of the tightening block (503) is arc-shaped and matched with the wrist arm.

6. A catenary anti-drop cap for a railway overhead line according to claim 5, characterised in that: The tightening block (503) is provided with a group of convex points (5031).

7. A catenary anti-drop cap for a railway overhead line according to claim 1, characterized in that: The threaded rod (4) is provided with a cushion block (8), and the cushion block (8) is located between the rhombic tightening assembly (5) and the connecting column (7).

8. A catenary anti-drop cap for a railway overhead line according to claim 1, characterized in that: The nut (6) is fixedly connected with the rhombic tightening assembly (5).

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