Middle suspension device of large-span rigid contact network

Abstract

The utility model discloses a large-span rigid overhead line system middle suspension device, which relates to the technical field of urban rail transit power supply equipment, and comprises a pulley assembly and two groups of symmetrically distributed fixing assemblies, each fixing assembly comprises an anchoring bottom plate, a supporting plate, a connecting plate, an insulator and a fixing sleeve, the lower anchor bottom plate is fixed on a stress plane through four anchor bolts, the supporting plate is connected with the lower anchor bottom plate through bolts and nuts, and one end of the insulator is fixedly connected with the supporting plate through a connecting plate. The suspension point is installed at the position with the large span in a cable suspension mode, the installation and adjustment process is simple and convenient, anchor installation is only needed to be conducted on any stress plane, the construction time can be saved, and the construction progress can be guaranteed. Meanwhile, compared with the mode that a long I-beam is used for arranging a suspension point, the suspension device is better in economical efficiency, and the reliability of a project can be effectively improved.

Description

Technical Field:

[0001] The utility model relates to the technical field of urban rail transit power supply equipment, in particular to a large-span rigid catenary intermediate suspension device. Background Art:

[0002] The catenary specialty is a very important part of the power supply system, and due to its lack of redundancy, its reliability requirements are very high. When a catenary fault occurs, it will have a huge impact on the safety of train operation. In the field of urban rail transit, trains mostly draw current from the rigid catenary through pantographs. However, in some special sections, since the installation position of the suspension point is a hollow structure and there is no installation condition, it is impossible to arrange the traditional rigid catenary suspension device. Therefore, it is necessary to propose a large-span rigid catenary intermediate suspension device for the installation of the rigid catenary in special sections, so as to ensure the design span and improve the reliability of the rigid catenary system.

[0003] In the prior art, the utility model patent with the publication number of CN218616344U discloses a large-span rigid catenary suspension installation device for stations. However, the applicable scenarios of this installation method are still very limited, only for large-span installations within stations. At the same time, when the span is too large, the length of the transverse I-beam required is longer, which will cause problems such as reduced stiffness of the suspension point and increased cost. Therefore, the utility model provides a large-span rigid catenary intermediate suspension device. Summary of the Invention:

[0004] The purpose of the utility model is to propose a large-span rigid catenary intermediate suspension device to solve the problem for some special sections in urban rail transit where the traditional rigid catenary suspension device cannot be installed and arranged.

[0005] To achieve the above purpose, the technical solution of the utility model is:

[0006] A large-span rigid catenary intermediate suspension device includes a pulley assembly and two groups of symmetrically distributed fixed components. The fixed components include an anchor bottom plate, a support plate, a connecting plate, an insulator, and a fixed sleeve. The anchor bottom plate is fixed on the stress plane by four anchor bolts. The support plate is connected to the anchor bottom plate by bolts and nuts. One end of the insulator is fixedly connected to the support plate through the connecting plate, and the other end of the insulator is connected and fixed to the fixed sleeve by bolts and nuts.

[0007] Further, the pulley assembly includes a pulley and a wire. The two ends of the wire are respectively connected to the two groups of fixed sleeves, and the wire is connected to the pulley.

[0008] Further, the pulley assembly further includes two claw jaws. The two claw jaws are fixedly connected together by two bolts. A busbar is commonly connected to the two claw jaws. The two fixedly connected claw jaws slide on the busbar. A support column is fixedly installed above the two fixedly connected claw jaws. A pulley bracket is fixedly installed on the support column. A pulley shaft is arranged inside the pulley bracket, and the pulley shaft is connected to the pulley.

[0009] Further, the connecting plate rotates along the support plate.

[0010] Further, the wire is fixedly connected to the fixed sleeve through a wedge.

[0011] The beneficial effects of the present utility model are as follows: The present utility model is applicable to the installation of large-span catenary where the installation conditions do not exist for the traditional suspension point installation method. The method of suspending the wire is adopted to realize the installation of suspension points at positions with a relatively large span. The installation and adjustment process is simple and convenient, and only the lower anchor installation needs to be carried out on any stress plane, which can save construction time and ensure the construction progress. At the same time, compared with setting suspension points by using a long I-beam, the present utility model has better economy and can effectively improve the reliability of the project. Description of the drawings:

[0012] Figure 1 is the overall structural schematic diagram of the embodiment of the present utility model;

[0013] Figure 2 is Figure 1 the enlarged schematic diagram of the structure at A in

[0014] Figure 3 is Figure 2 the cross-sectional view in the B-B direction of

[0015] Reference numerals in the drawings: 1 - lower anchor base plate; 2 - support plate; 3 - connecting plate; 4 - insulator; 5 - fixed sleeve; 6 - wire; 7 - busbar; 8 - pulley bracket; 9 - pulley; 10 - claw jaw; 11 - bolt; 12 - support column. Specific implementation manners:

[0016] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the drawings and specific embodiments.

[0017] A large-span rigid catenary intermediate suspension device, as Figures 1-3As shown in the figure, it includes a pulley assembly and two sets of symmetrically distributed fixed assemblies, including a lower anchor bottom plate 1, a support plate 2, a connecting plate 3, an insulator 4, and a fixed sleeve 5. The lower anchor bottom plate 1 is fixed on any stress plane by four anchor bolts, and the fixed position is not limited to a concrete wall surface or a catenary support column, etc.; the support plate 2 is connected to the lower anchor bottom plate 1 by bolts and nuts. One end of the insulator 4 is fixedly connected to the support plate 2 through the connecting plate 3, and the other end of the insulator 4 is connected to the fixed sleeve 5 by bolts and nuts. This installation and fixing method is similar to that of a conventional catenary lower anchor.

[0018] The pulley assembly includes a pulley 9 and a wire 6. Both ends of the wire 6 are respectively connected to two sets of fixed sleeves 5. The wire 6 is fixedly connected to the fixed sleeve 5 through a wedge. The wire 6 is connected to the pulley 9, and the wire 6 bears the downward force at the suspension point.

[0019] The pulley assembly further includes two clamping claws 10. The two clamping claws 10 are fixedly connected together by two bolts 11. The two clamping claws 10 are jointly connected to a busbar 7. The two clamping claws 10 fixed together slide on the busbar 7. Above the two clamping claws 10 fixed together, a support column 12 is fixedly installed. A pulley bracket 8 is fixedly installed on the support column 12. A pulley shaft is arranged inside the pulley bracket 8, and the pulley shaft is connected to the pulley 9.

[0020] The pulley assembly further includes two clamping claws 10. The two clamping claws 10 are fixedly connected together by two bolts 11. The two clamping claws 10 fixed together clamp the busbar 7. The two clamping claws 10 fixed together slide on the busbar 7 to prevent the busbar 7 from getting stuck due to thermal expansion and contraction. A semi-circular hole is provided on the clamping claw 10. The two clamping claws 10 fixed together form a complete hole. The support column 12 passes through the complete hole formed by the two clamping claws 10 from below and is fixedly connected by a nut. A threaded hole is provided at the top of the support column 12.

[0021] The pulley bracket 8 is fixed by screwing into the threaded hole at the top of the support column 12. A pulley shaft is arranged inside the pulley bracket 8. The pulley 9 rotates on the pulley shaft. The connecting plate 3 rotates along the support plate 2. The materials of the lower anchor bottom plate 1, the support plate 2, the connecting plate 3, the fixed sleeve 5, and the clamping claw 10 are all Q235B carbon structural steel.

[0022] The above has described the present invention in detail through embodiments, but the content described is only an exemplary embodiment of the present invention and cannot be considered as limiting the implementation scope of the present invention. The protection scope of the present invention is defined by the claims. Any use of the technical solutions described in the present invention, or those designed by those skilled in the art under the inspiration of the technical solutions of the present invention, within the essence and protection scope of the present invention, to design similar technical solutions to achieve the above technical effects, or any equivalent changes and improvements made to the application scope, etc., should still fall within the patent coverage protection scope of the present invention.

Claims

1. A large-span rigid contact network intermediate suspension device, characterized in that: The invention comprises a pulley assembly and two groups of symmetrically distributed fixing assemblies, wherein the fixing assembly comprises a lower anchor plate (1), a support plate (2), a connecting plate (3), an insulator (4), and a fixing sleeve (5); the lower anchor plate (1) is fixed on a force-bearing plane by four anchor bolts; the support plate (2) and the lower anchor plate (1) are connected by bolts and nuts; one end of the insulator (4) is fixedly connected to the support plate (2) by the connecting plate (3); and the other end of the insulator (4) is fixed to the fixing sleeve (5) by bolts and nuts.

2. A large-span rigid contact network intermediate suspension device according to claim 1, characterized in that: The pulley assembly comprises a pulley (9) and a thread (6), the two ends of the thread (6) are respectively connected to two groups of fixed sleeves (5), and the thread (6) is connected to the pulley (9).

3. A large-span rigid contact network intermediate suspension device according to claim 2, characterized in that: The pulley assembly also includes two claws (10), the two claws (10) are fixedly connected together by two bolts (11), the two claws (10) are commonly connected to a bus (7), the two claws (10) fixed together slide on the bus (7), a bracket column (12) is fixedly installed above the two claws (10) fixed together, a pulley bracket (8) is fixedly installed on the bracket column (12), a pulley shaft is arranged in the pulley bracket (8), and the pulley shaft is connected to the pulley (9).

4. A large-span rigid contact network intermediate suspension device according to claim 1, characterized in that: The connecting plate (3) rotates along the supporting plate (2).

5. The large-span rigid contact network intermediate suspension device according to claim 2, characterized in that: The thread (6) is fixedly connected to the fixed sleeve (5) via a wedge.

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