Combined power grid catenary for railway electrification project

Abstract

The utility model discloses a combined type electric network contact net for railway electrification engineering relates to railway electrification equipment technical field, including contact net stand and support device, the back fixedly connected with rotary axle rod of contact net stand, rotary axle rod is away from one end of contact net stand and is rotatably connected with support plate frame, rotary axle rod is located the one side of support plate frame close to the top, the bottom surface fixedly connected with fixed base of support plate frame, the side swing joint of contact net stand away from support plate frame has the closed fastening sleeve shell for closing fixed to it. The utility model discloses through utilize the cooperation of support plate frame, contact net stand, closed fastening sleeve shell and rotary axle rod, makes staff when installing support device, does not need to carry out the high operation, has reduced the construction risk, has improved the construction safety, and the support device installs on the ground also, has improved the installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of railway electrification equipment technology, specifically to a combined power grid contact network for railway electrification engineering. Background Technology

[0002] The overhead contact system (or catenary) is a high-voltage power transmission line erected in a zigzag pattern above the rails in electrified railways, supplying current to the pantograph. It is the main framework of railway electrification engineering, a special type of power transmission line that supplies power to electric locomotives. The catenary is one of two commonly used power supply network methods in electrified railways; the other is third rail power supply. Catenaries are mostly distinguished by the type of contact suspension, generally divided into two main categories based on their structure: simple contact suspension and chain-link contact suspension. The catenary consists of several parts: contact suspension, support devices, positioning devices, supports, and foundations. The supports and foundations bear the entire load of the contact suspension, supports, and positioning devices, and fix the contact suspension at the specified position and height. In China, prestressed reinforced concrete supports or steel columns are used in the catenary system. The foundation refers to the steel support; it is fixed to a reinforced concrete foundation beneath the steel support, which bears the entire load transmitted from the support and ensures the stability of the support.

[0003] The installation of the cantilever arm on the steel column is carried out by workers climbing up the height after the steel column is installed first. Therefore, there are certain risks for workers to work at height. Moreover, the workers' work efficiency is affected by the limited space when working at height, which leads to the increase in installation time and further increases the risk. Utility Model Content

[0004] The purpose of this utility model is to provide a combined power grid contact network for railway electrification engineering to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A combined power grid contact network for railway electrification engineering includes contact network posts and support devices. A rotating shaft is fixedly connected to the back of the contact network post. A support plate is rotatably connected to the end of the rotating shaft away from the contact network post. The rotating shaft is located on the side of the support plate near the top.

[0007] The bottom surface of the support plate is fixedly connected to a fixed base, and the side of the contact wire column away from the support plate is movably connected to a sealing and fastening sleeve for sealing and fixing it.

[0008] The support plate frame is detachably and fixedly connected to one side of the closed fastening housing by support positioning bolts, and the bottom surface of the closed fastening housing is detachably and fixedly connected to the upper surface of the fixed base by reinforcing plate fastening bolts.

[0009] A further improvement of this utility model is that: a snap-fit ​​base plate is fixedly connected to the bottom surface of the closed fastening sleeve, and the upper surface of the snap-fit ​​base plate is snapped to the bottom end of the contact wire column.

[0010] A further improvement of this utility model is that: both sides of the closed fastening sleeve near the bottom are fixedly connected with side reinforcement plates, the upper surface of the fixed base is provided with a mating threaded hole, and the fastening bolt of the reinforcement plate is threaded through to the outer wall of one end of the side reinforcement plate and threadedly connected to the inner wall of the mating threaded hole.

[0011] A further improvement of this utility model is that: a positioning threaded hole is provided on the side of the closed fastening sleeve near the support plate frame, and the inner wall of the positioning threaded hole is threadedly connected to the outer wall of one end of the support positioning bolt.

[0012] A further improvement of this utility model is that mounting grooves are provided on both the left and right sides of the closed fastening sleeve.

[0013] A further improvement of this utility model is that a weight-reducing groove is provided on the back of the support plate frame for reducing its weight.

[0014] A further improvement of this utility model is that a reinforcing support block is fixedly connected to the bottom end of the support plate frame, and the bottom surface of the reinforcing support block is fixedly connected to the upper surface of the fixed base.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] This utility model provides a combined power grid contact network for railway electrification engineering. By using a combination of support plate frame, contact network column, enclosed fastening sleeve and rotating shaft, workers do not need to climb to heights when installing the support device, which reduces construction risks and improves construction safety. Moreover, the installation of the support device on the ground also improves installation efficiency.

[0017] This utility model provides a combined power grid contact network for railway electrification engineering. By using a support plate frame, a closed fastening sleeve, a side reinforcement plate, support positioning bolts, and reinforcement plate fastening bolts in combination, the contact network column can be firmly installed on the fixed base after being connected and installed with the support plate frame, without any displacement, thus ensuring stability during use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the contact wire column deflection structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the support plate frame structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the closed and fastening sleeve structure of this utility model.

[0022] In the diagram: 1. Contact wire post; 2. Support device; 3. Enclosed fastening sleeve; 4. Fixed base; 5. Support plate frame; 6. Rotating shaft; 7. Support positioning bolt; 8. Mounting groove; 9. Reinforcing support block; 10. Side reinforcing plate; 11. Reinforcing plate fastening bolt; 12. Butt threaded hole; 13. Positioning threaded hole; 14. Snap-fit ​​base plate; 15. Weight reduction groove. Detailed Implementation

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will be further described in detail below with reference to embodiments:

[0025] like Figure 1-4 As shown, this utility model provides a combined power grid contact network for railway electrification engineering, including a contact network column 1 and a support device 2. A rotating shaft 6 is fixedly connected to the back of the contact network column 1. A support plate frame 5 is rotatably connected to the end of the rotating shaft 6 away from the contact network column 1. The rotating shaft 6 is located on the side of the support plate frame 5 near the top.

[0026] The bottom surface of the support plate frame 5 is fixedly connected to a fixed base 4, and the side of the contact wire column 1 away from the support plate frame 5 is movably connected to a sealing and fastening sleeve 3 for sealing and fixing it.

[0027] The support plate frame 5 is detachably fixed to one side of the closed fastening sleeve 3 by the support positioning bolt 7, and the bottom surface of the closed fastening sleeve 3 is detachably fixed to the upper surface of the fixed base 4 by the reinforcing plate fastening bolt 11.

[0028] A snap-fit ​​base plate 14 is fixedly connected to the bottom surface of the closed fastening sleeve 3, and the upper surface of the snap-fit ​​base plate 14 snaps into the bottom end of the contact wire column 1. The inner wall of the closed fastening sleeve 3 is adapted to the shape of one side of the outer wall of the contact wire column 1, which can ensure that the contact wire column 1 will not shift after installation. At the same time, the snap-fit ​​base plate 14 is inserted into the gap between the bottom of the contact wire column 1 and the fixed base 4, fixing and limiting the bottom of the contact wire column 1, further ensuring the fixing effect of the contact wire column 1.

[0029] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the two sides of the closed fastening sleeve 3 near the bottom are fixedly connected with side reinforcement plates 10, the upper surface of the fixed base 4 is provided with a mating threaded hole 12, and the reinforcement plate fastening bolt 11 is threaded through to the outer wall of one end of the side reinforcement plate 10 and threadedly connected to the inner wall of the mating threaded hole 12.

[0030] The closed fastening sleeve 3 has a positioning threaded hole 13 on the side near the support plate frame 5. The inner wall of the positioning threaded hole 13 is threaded to the outer wall of one end of the support positioning bolt 7.

[0031] The sealing fastening sleeve 3 has mounting grooves 8 on both the left and right sides. The mounting grooves 8 on the sides of the sealing fastening sleeve 3 facilitate the installation of nuts that mate with the support positioning bolts 7, and also facilitate subsequent disassembly.

[0032] The back of the support plate frame 5 is provided with a weight reduction groove 15 for reducing its weight. The bottom end of the support plate frame 5 is fixedly connected to a reinforcing support block 9, and the bottom surface of the reinforcing support block 9 is fixedly connected to the upper surface of the fixed base 4.

[0033] The working principle of the combined power grid contact network used in this railway electrification project will be explained in detail below.

[0034] like Figure 1-4 As shown, the top of the contact wire column 1 is flipped over and brought into contact with the ground. Then, the workers can first install the support device 2 on the top area of ​​the contact wire column 1. After installation, the top of the contact wire column 1 can be lifted directly using the lifting device and rotated around the connecting shaft between it and the support plate frame 5 until the whole is parallel to the support plate frame 5. After keeping it in the lifted state, the sealing and fastening sleeve 3 is connected to the support plate frame 5 and the two are fixed by the support positioning bolts 7. Then, the sealing and fastening sleeve 3 is fixed to the fixed base 4 by the reinforcing plate fastening bolts 11. Then, the contact wire column 1 is fixedly snapped between the sealing and fastening sleeve 3 and the support plate frame 5, completing the fixing work of the contact wire column 1 and thus completing the installation work of the contact wire column 1.

[0035] The installation of support device 2 does not require workers to climb to heights, reducing the work risks for workers.

[0036] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A combined power grid contact network for railway electrification engineering, comprising contact network posts (1) and supporting devices (2), characterized in that: A rotating shaft (6) is fixedly connected to the back of the contact wire column (1). A support plate frame (5) is rotatably connected to one end of the rotating shaft (6) away from the contact wire column (1). The rotating shaft (6) is located on the side of the support plate frame (5) near the top. The bottom surface of the support plate frame (5) is fixedly connected to a fixed base (4), and the side of the contact wire column (1) away from the support plate frame (5) is movably connected to a sealing and fastening sleeve (3) for sealing and fixing it. The support plate frame (5) is detachably fixed to one side of the closed fastening sleeve (3) by a support positioning bolt (7), and the bottom surface of the closed fastening sleeve (3) is detachably fixed to the upper surface of the fixed base (4) by a reinforcing plate fastening bolt (11).

2. The combined power grid contact network for railway electrification engineering according to claim 1, characterized in that: The bottom surface of the closed fastening sleeve (3) is fixedly connected to a snap-fit ​​base plate (14), and the upper surface of the snap-fit ​​base plate (14) is snapped to the bottom end of the contact wire column (1).

3. The combined power grid contact network for railway electrification engineering according to claim 1, characterized in that: The closed fastening sleeve (3) has side reinforcement plates (10) fixedly connected to both sides near the bottom end. The upper surface of the fixed base (4) is provided with a mating threaded hole (12). The fastening bolt (11) of the reinforcement plate is threaded through to the outer wall of one end of the side reinforcement plate (10) and threadedly connected to the inner wall of the mating threaded hole (12).

4. The combined power grid contact network for railway electrification engineering according to claim 1, characterized in that: The closed fastening sleeve (3) has a positioning threaded hole (13) on the side near the support plate frame (5), and the inner wall of the positioning threaded hole (13) is threaded to the outer wall of one end of the support positioning bolt (7).

5. A combined power grid contact network for railway electrification engineering according to claim 1, characterized in that: The closed fastening sleeve (3) has mounting grooves (8) on both the left and right sides.

6. A combined power grid contact network for railway electrification engineering according to claim 1, characterized in that: The back of the support plate frame (5) is provided with a weight-reducing groove (15) for reducing its weight.

7. A combined power grid contact network for railway electrification engineering according to claim 1, characterized in that: The bottom end of the support plate frame (5) is fixedly connected to a reinforcing support block (9), and the bottom surface of the reinforcing support block (9) is fixedly connected to the upper surface of the fixed base (4).

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