Center anchoring device for carrier cable in overhead line system suspension

Abstract

The utility model belongs to the technical field of equipment special for an electrified railway overhead line system, and discloses a center anchoring device for a carrier cable in overhead line system suspension, which is characterized by comprising an upper clamping plate, a middle clamping plate and a lower clamping plate, the front side face and the back side face of the middle clamping plate are provided with line contact grooves, the two sides of the upper clamping plate and the two sides of the lower clamping plate are provided with positioning connecting holes in one-to-one correspondence, positioning holes are integrally formed in at least one side edge of the middle clamping plate, and the line contact groove of the upper clamping plate is matched with the line contact groove in one side of the middle clamping plate and used for installing and connecting a carrier cable. The line contact groove of the lower clamping plate is matched with the line contact groove in the other side of the middle clamping plate and used for installing and connecting a center anchor knot rope. The sliding load of the center anchor knot is improved, so that the whole anchor section is prevented from moving towards one side, the accident range is reduced, and certain guarantee is provided for driving safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of special equipment for contact network of electrified railways, and particularly relates to a central anchoring device for a load-bearing cable in the suspension of a contact network. Background Art

[0002] Railways are the economic arteries of my country and are of great significance to the development of our country. In railway construction, the contact network is a facility used to provide electricity for electric locomotives and trains, and the catenary is an important component used to support and fix the contact network. The function of the central anchor device is to ensure that the catenary can be firmly connected to the contact network suspension system to ensure the stability and safety of the contact network. This can ensure that electric locomotives and trains can obtain electricity safely and stably during driving, and ensure the normal operation of the railway transportation system. In chain suspension, in order to enable the central anchor device to effectively prevent the entire anchor section from moving to one side and reduce the scope of the accident, it is particularly important to increase the sliding load of the central anchor. Utility Model Content

[0003] In order to increase the sliding load of the central anchor, the utility model discloses a central anchor device for a load-bearing cable in a contact network suspension, which prevents the entire anchor section from moving to one side and reduces the scope of accidents, thereby providing a certain guarantee for driving safety.

[0004] The specific technical solution of the utility model is as follows:

[0005] A central anchoring device for a load-bearing cable in a contact network suspension comprises an upper splint, a middle splint and a lower splint, wherein one side of the upper splint and the lower splint are each provided with a wire contact groove, the front and back sides of the middle splint are each provided with a wire contact groove, the upper and lower splints are provided with corresponding positioning connection holes on both sides, at least one side of the middle splint is integrally formed with a positioning hole, the wire contact groove of the upper splint cooperates with the wire contact groove on one side of the middle splint for installing and connecting the load-bearing cable, the wire contact groove of the lower splint cooperates with the wire contact groove on the other side of the middle splint for installing and connecting the central anchor rope, and the wire contact grooves are each provided with an oblique thread toothed groove for embedding a stranded wire.

[0006] Preferably, the inclination angle α of the helical thread tooth groove matches the torsion angle of the stranded wire.

[0007] Preferably, the inclination angles of the oblique thread tooth grooves on the front and back sides of the middle clamping plate are opposite.

[0008] Preferably, the inclination angle α is in the range of 20°±5°.

[0009] Preferably, the positioning connection holes of the upper clamping plate and the lower clamping plate are connected by bolts, and the bolts pass through the positioning holes of the middle clamping plate to position and connect the middle clamping plate.

[0010] Preferably, the positioning and connecting holes on one side of the upper clamping plate are threaded holes, and the positioning and connecting holes on both sides of the lower clamping plate are threaded holes.

[0011] Beneficial effects: The utility model discloses a center anchoring device for a load-bearing cable in a contact network suspension. Compared with the prior art, an oblique threaded tooth groove that matches the torsion angle of the stranded wire (load-bearing cable / center anchoring rope) is provided on the clamping plate of the wire clamp, so that a single strand of the copper stranded wire is basically embedded in the tooth groove with an α angle, which can effectively increase its sliding load, thereby improving the stability of the center anchoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a working state diagram of Example 1;

[0013] Figure 2 This is a schematic diagram of the overall explosion structure of Example 1;

[0014] Figure 3 Schematic diagram of the three-dimensional structure of the upper clamping plate of Example 1

[0015] Figure 4 is a top view of the lower splint;

[0016] Figure 5 for Figure 4 AB section schematic diagram;

[0017] Figure 6 for Figure 4 Schematic diagram of CD cross section;

[0018] Figure 7 Schematic diagram of the three-dimensional structure of the middle splint;

[0019] Figure 8 It is the left view of the middle splint;

[0020] Fig. 9 It is the right side view of the middle splint;

[0021] In the figure: upper splint 1, middle splint 2, lower splint 3, line contact groove 4, positioning connection hole 5, positioning hole 6, oblique thread tooth groove 7, load-bearing cable 8, center anchor rope 9, bolt 10. DETAILED DESCRIPTION

[0022] Several improvements and modifications are made to the present invention in conjunction with the accompanying drawings, and these improvements and modifications should also be regarded as within the protection scope of the present invention. Example 1

[0023] like Figure 1-2As shown, a central anchoring device for a load-bearing cable in a contact network suspension includes an upper splint 1, a middle splint 2 and a lower splint 3, wherein a line contact groove 4 is provided on one side of the upper splint 1 and the lower splint 3, and a line contact groove 4 is provided on both the front and back sides of the middle splint 2. One-to-one corresponding positioning connection holes 5 are provided on both sides of the upper splint 1 and the lower splint 3, and a positioning hole 6 is integrally formed on at least one side of the middle splint 2. The line contact groove 4 of the upper splint 1 cooperates with the line contact groove 4 on one side of the middle splint 2 for installing and connecting the load-bearing cable 8, and the line contact groove 4 of the lower splint 3 cooperates with the line contact groove 4 on the other side of the middle splint 2 for installing and connecting the central anchor rope 9. Figure 3-9 As shown, the wire contact groove 4 is provided with an oblique thread tooth groove 7 for embedding the copper stranded wire (in the utility model, the load-bearing cable 8 and the center anchor rope 9 are both copper stranded wire structures).

[0024] In the utility model, the inclination angle α of the oblique thread tooth-shaped groove 4 matches the torsion angle of the stranded wire, and the value range of the inclination angle α is 20°±5°.

[0025] In the utility model, the inclination directions of the oblique thread tooth grooves on the front and back sides of the middle clamping plate 2 are opposite. During installation, the inclination angle of the oblique thread tooth groove in contact with the copper stranded wire is ensured to be opposite to the torsion angle of the copper stranded wire, so that a single strand of the copper stranded wire is basically embedded in the oblique thread tooth groove with an angle of α.

[0026] In the present invention, the upper clamping plate 1 and the lower clamping plate 3 are connected by bolts 10 between the positioning connection holes 5, and the bolts 10 pass through the positioning holes 6 of the middle clamping plate 2, and are used to position and connect the middle clamping plate 2. In the present invention, the positioning connection holes of the upper clamping plate and the lower clamping plate can be selectively designed as threaded holes according to actual needs. In this embodiment 1, the positioning connection holes 5 on one side of the upper clamping plate 1 are threaded holes, and the positioning connection holes 5 on both sides of the lower clamping plate 2 are threaded holes.

[0027] The installation method of Example 1 is as follows:

[0028] like Figure 1-2As shown, during installation, the line contact grooves of the upper clamping plate 1 and the middle clamping plate 2 (one side) are used to install the load-bearing cable 8 (copper stranded wire), and ensure that the inclination angle α of the oblique threaded tooth grooves of the upper clamping plate 1 and the middle clamping plate 2 is opposite to the torsion angle of the load-bearing cable 8 (copper stranded wire), so that the single strand of the load-bearing cable 8 (copper stranded wire) is basically embedded in the oblique threaded tooth grooves of angle α. At the same time, the line contact grooves of the lower clamping plate 3 and the middle clamping plate 2 (the other side) are used to install another central anchor rope 9 (copper stranded wire). During installation, ensure that the inclination angle α of the oblique threaded tooth grooves 4 of the lower clamping plate 3 and the middle clamping plate 2 is opposite to the torsion angle of the installed central anchor rope 9 (copper stranded wire), so that the single strand of the central anchor rope 9 (copper stranded wire) is basically embedded in the oblique threaded tooth grooves 4 of angle α. Then, bolts are used to pass through the positioning connection hole 5 of the upper clamping plate 1, the positioning hole 6 of the middle clamping plate 2 and the positioning connection hole 5 of the lower clamping plate 3 in sequence to fasten the two copper strands (the load-bearing cable 8 and the center anchor rope 9) in the oblique threaded center anchor wire clamp.

[0029] The above is only an explanation of the utility model and is a preferred embodiment of the utility model. It should be pointed out that ordinary technicians in this technical field can make some improvements and modifications without departing from the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A central anchoring device for a load-bearing cable in a contact network suspension, characterized in that: It comprises an upper splint, a middle splint and a lower splint, wherein one side of the upper splint and the lower splint are provided with a wire contact groove, the front and back sides of the middle splint are provided with a wire contact groove, the upper and lower splints are provided with corresponding positioning connection holes on both sides, at least one side of the middle splint is integrally formed with a positioning hole, the wire contact groove of the upper splint cooperates with the wire contact groove on one side of the middle splint for installing and connecting the load-bearing cable, the wire contact groove of the lower splint cooperates with the wire contact groove on the other side of the middle splint for installing and connecting the center anchor rope, and the wire contact grooves are provided with oblique thread tooth grooves for embedding the stranded wire.

2. A central anchoring device for a load-bearing cable in a contact network suspension according to claim 1, characterized in that: The inclination angle α of the helical thread tooth groove matches the torsion angle of the stranded wire.

3. A central anchoring device for a load-bearing cable in a contact network suspension according to claim 2, characterized in that: The inclination angles of the oblique thread tooth-shaped grooves on the front and back sides of the middle clamping plate are opposite.

4. A central anchoring device for a load-bearing cable in a contact network suspension according to claim 3, characterized in that: The value range of the inclination angle α is 20°±5°.

5. The central anchoring device of the load-bearing cable in the overhead wire suspension according to claim 3, characterized in that: The upper clamping plate and the lower clamping plate are connected by bolts between the positioning and connecting holes, and the bolts pass through the positioning holes of the middle clamping plate to position and connect the middle clamping plate.

6. A central anchoring device for a load-bearing cable in a contact network suspension according to claim 5, characterized in that: The positioning connection holes on one side of the upper clamping plate are threaded holes, and the positioning connection holes on both sides of the lower clamping plate are threaded holes.

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