A special approach bridge for tunnel electric locomotive

Abstract

The application relates to a special approach bridge for a tunnel electric locomotive and relates to the technical field of electric locomotive approach bridges. The approach bridge comprises a main bridge and an approach bridge rotatably connected to the main bridge. The lower end of the approach bridge is provided with a plurality of supporting telescopic rods. The upper end of the supporting telescopic rods is provided with a connecting groove body. The end of the supporting telescopic rods is arranged in the connecting groove body. The connecting groove body and the end of the supporting telescopic rods are provided with the same rotating rod penetrating and rotatably connected. The connecting groove body is provided with a fixing piece for fixing the supporting telescopic rods in the connecting groove. The end of the connecting groove body close to the approach bridge is rotatably connected with a connecting disc. The connecting disc and the approach bridge are provided with a fixing assembly for fixing the two. The application has the effect that the approach bridge can better match the uneven ground.

Description

Technical Field

[0001] This application relates to the field of electric locomotive approach bridge technology, and in particular to a special approach bridge for electric locomotives used in tunnels. Background Technology

[0002] During tunnel construction, locomotives are crucial transportation equipment, and their operational stability and convenience are paramount. Approach bridges, as key components connecting locomotives to the tunnel surface, play a decisive role in ensuring the smooth entry and exit of locomotives from and from the tunnel.

[0003] Currently, tunnel construction environments are complex and variable, with highly unstable ground conditions, often exhibiting unevenness. This unevenness presents numerous challenges to the use of locomotive ramps. When the ramp is lowered, the uneven ground makes it difficult for its ends to adhere properly to the surface. This not only affects the stability of the locomotive when moving up and down the ramp, increasing the risk of derailment, but may also lead to damage due to uneven stress during use, significantly shortening the ramp's service life.

[0004] To address these issues, some existing approach bridges employ height-adjustable support structures. However, these structures have limited adjustment ranges when facing uneven and complex ground surfaces, making it difficult to flexibly adapt to various irregular terrains and achieve a tight fit between the ends and the ground. Other approach bridges attempt to improve the fit by adding flexible components at the ends; however, in practical applications, these flexible components are prone to wear under frequent friction and pressure, requiring frequent replacement and increasing maintenance costs. Furthermore, they still fail to effectively solve the fit problem under extremely uneven ground conditions. Utility Model Content

[0005] In order to enable the approach bridge to fit better with uneven ground, this application provides a special approach bridge for electric locomotives in tunnels.

[0006] The technical solution provided in this application for a special approach bridge for electric locomotives used in tunnels is as follows: A tunnel approach bridge for electric locomotives includes a main bridge and an approach bridge rotatably connected to the main bridge. The lower end of the approach bridge is provided with multiple supporting telescopic rods. The upper end of each supporting telescopic rod is provided with a connecting groove. The ends of the supporting telescopic rods are placed within the connecting grooves. The connecting grooves and the ends of the supporting telescopic rods are connected by a common rotating rod. The connecting grooves are provided with fixing components for securing the supporting telescopic rods within the connecting grooves. A connecting disc is rotatably connected to one end of the connecting grooves near the approach bridge. A fixing assembly for securing the two is provided between the connecting disc and the approach bridge.

[0007] By adopting the above technical solutions, the support telescopic rod can adjust the height and angle of the approach bridge to adapt to different terrains; the connecting groove and the support telescopic rod are rotatably connected by a rotating rod, which facilitates the adjustment of the position of the support telescopic rod; the fastener can fix the support telescopic rod in the connecting groove to ensure connection stability; the connecting plate and the approach bridge are fixed by a fixing component to further enhance structural stability.

[0008] Optionally, the fixing component includes a plurality of fixing bolts, which are threadedly connected to both the connecting disc and the approach bridge.

[0009] By adopting the above technical solution, the connecting plate is rotatably connected to the end of the connecting groove near the bridge and is simultaneously threadedly connected to the bridge by multiple fixing bolts, thereby fixing the connecting plate and the bridge and effectively ensuring the stability and reliability of the connection.

[0010] Optionally, the connecting groove has multiple threaded holes, and the fixing member is a screw rod that passes through and is threadedly connected to the support telescopic rod, with the screw rod threadedly connected in the threaded holes.

[0011] By adopting the above technical solution, the angle of the support telescopic rod can be changed by connecting the screw threaded into different threaded holes.

[0012] Optionally, the support telescopic rod can be configured as a hydraulic self-locking telescopic rod or a threaded self-locking telescopic rod.

[0013] By adopting the above technical solution, the support telescopic rod can be set as a hydraulic self-locking telescopic rod or a threaded self-locking telescopic rod, so that the support telescopic rod can achieve self-locking after being adjusted to a suitable length, stably supporting the approach bridge and ensuring the stability and safety of the approach bridge during use.

[0014] Optionally, the connecting groove is threaded with reinforcing bolts, which are located on both sides of the supporting telescopic rod.

[0015] By adopting the above technical solutions, the stability of the connecting trough can be further enhanced, and the overall stability of the approach bridge support structure can be improved.

[0016] Optionally, a support base plate is installed at the end of the support telescopic rod away from the approach bridge.

[0017] By adopting the above technical solution, the contact area between the support telescopic rod and the ground can be increased, thereby improving the stability of the support.

[0018] Optionally, the support base plate is hinged to the support telescopic rod.

[0019] By adopting the above technical solution, the support base plate can adaptively adjust its angle according to the ground conditions, better fit the ground, and enhance the stability of the support.

[0020] Optionally, a wear-resistant rubber plate is fixedly connected to the lower end of the support base plate.

[0021] By adopting the above technical solution, the wear-resistant rubber plate can be fixedly connected to the lower end of the support base plate, which can improve the wear resistance of the support base plate, extend its service life, and ensure the support effect.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Support telescopic rods are installed at the lower end of the approach bridge, which can flexibly adjust the height and angle of the approach bridge according to the actual situation, thereby improving the applicability of the approach bridge in different tunnel construction scenarios and locomotive specifications; 2. The support telescopic rod and the connecting groove are rotatably connected by a rotating rod and are equipped with fixing parts to facilitate the adjustment and fixation of the support telescopic rod and enhance the stability of the approach bridge; 3. A fixing component is provided between the connecting plate and the approach bridge to further ensure the stability of the connection and ensure the safe operation of the locomotive. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 yes Figure 1 A magnified view of part A in the diagram.

[0024] In the diagram, 1. Approach bridge; 2. Main bridge; 3. Support telescopic rod; 4. Connecting groove; 41. Threaded hole; 5. Rotating rod; 6. Fixing component; 7. Connecting plate; 8. Fixing assembly; 81. Fixing bolt; 9. Reinforcing bolt; 10. Support base plate; 11. Wear-resistant rubber plate. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 This application will be described in further detail below.

[0026] An embodiment of this application is: a special approach bridge 1 for electric locomotives used in tunnels, referring to... Figure 1 and Figure 2 The system includes a main bridge 2 and an approach bridge 1 rotatably connected to the main bridge 2. The lower end of the approach bridge 1 is provided with multiple supporting telescopic rods 3, wherein the supporting telescopic rods 3 are configured as hydraulic self-locking telescopic rods or threaded self-locking telescopic rods. In this embodiment, the supporting telescopic rods 3 are configured as three threaded self-locking telescopic rods.

[0027] The upper end of the support telescopic rod 3 is provided with a connecting groove 4. The end of the support telescopic rod 3 is placed in the groove of the connecting groove 4. Reinforcing bolts 9 are threaded onto the connecting groove 4, and the reinforcing bolts 9 are located on both sides of the support telescopic rod 3. The connecting groove 4 and the end of the support telescopic rod 3 are connected by the same rotating rod 5 through and rotatably.

[0028] The connecting groove 4 is provided with a fixing member 6 for fixing the support telescopic rod 3 inside the connecting groove 4. The connecting groove 4 has multiple threaded holes 41. The fixing member 6 is a screw, which passes through and is threaded to the support telescopic rod 3. The screw is threaded into the threaded hole 41.

[0029] The screw can then be threaded into the threaded holes 41 at different positions, thereby changing the extension angle of the support telescopic rod 3.

[0030] A connecting plate 7 is rotatably connected to one end of the connecting groove 4 near the approach bridge 1. A fixing assembly 8 for fixing the two is provided between the connecting plate 7 and the approach bridge 1. The fixing assembly 8 includes multiple fixing bolts 81, and in this embodiment, two fixing bolts 81 are used. The fixing bolts 81 are threadedly connected to both the connecting plate 7 and the approach bridge 1. Thus, by rotating the connecting plate 7, the supporting telescopic rod 3 can be rotated to a suitable angle, and the supporting telescopic rod 3 can be fixed by rotating the fixing bolts 81.

[0031] A support base plate 10 is installed at the end of the support telescopic rod 3 away from the approach bridge 1. The support base plate 10 is hinged to the lower end of the support telescopic rod 3 by a ball joint. A wear-resistant rubber plate 11 is fixedly connected to the lower end of the support base plate 10.

[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A special approach bridge for electric locomotives used in tunnels, comprising a main bridge (2) and an approach bridge (1) rotatably connected to the main bridge (2), characterized in that, The lower end of the bridge (1) is provided with multiple supporting telescopic rods (3), the upper end of the supporting telescopic rods (3) is provided with a connecting groove (4), the end of the supporting telescopic rods (3) is placed in the connecting groove (4), the connecting groove (4) and the end of the supporting telescopic rods (3) are connected by the same rotating rod (5), the connecting groove (4) is provided with a fixing member (6) for fixing the supporting telescopic rods (3) in the connecting groove (4), the end of the connecting groove (4) near the bridge (1) is rotatably connected with a connecting plate (7), and a fixing component (8) for fixing the two is provided between the connecting plate (7) and the bridge (1).

2. The tunnel approach bridge for electric locomotives according to claim 1, characterized in that, The fixing component (8) includes a plurality of fixing bolts (81), which are threadedly connected to both the connecting plate (7) and the bridge (1).

3. The tunnel approach bridge for electric locomotives according to claim 2, characterized in that, The connecting groove (4) has multiple threaded holes (41), and the fixing member (6) is a screw rod. The screw rod passes through and is threadedly connected to the support telescopic rod (3). The screw rod is threadedly connected in the threaded hole (41).

4. The tunnel approach bridge for electric locomotives according to claim 1, characterized in that, The support telescopic rod (3) is configured as a hydraulic self-locking telescopic rod or a threaded self-locking telescopic rod.

5. A tunnel approach bridge for electric locomotives according to claim 1, characterized in that, The connecting groove (4) is threaded with reinforcing bolts (9), which are located on both sides of the supporting telescopic rod (3).

6. A tunnel approach bridge for electric locomotives according to claim 1, characterized in that, The supporting telescopic rod (3) is equipped with a supporting base plate (10) at the end away from the approach bridge (1).

7. A tunnel approach bridge for electric locomotives according to claim 6, characterized in that, The supporting base plate (10) is hinged to the supporting telescopic rod (3).

8. A tunnel approach bridge for electric locomotives according to claim 7, characterized in that, The lower end of the support base plate (10) is fixedly connected to a wear-resistant rubber plate (11).

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