Manual emergency braking device of large-gradient rack rail railway tunnel electric locomotive

Abstract

The utility model discloses a big slope rack rail railway tunnel electric locomotive hand-operated emergency braking device, which comprises a starting pull rod, a safety pin, a steel wire rope with a steel ring, a braking steel bar assembly and a hinge point seat, the hinge point seat is installed below the outside of a cab, the braking steel bar assembly comprises a steel bar and a pin shaft, the pin shaft penetrates through the hinge point seat, and the safety pin is arranged on the steel wire rope. And the steel bar is welded with the steel bar. One ends of the two steel wire ropes with the steel rings are welded to the steel bar, one ends of the steel rings enter a cab through holes in the two sides above cab glass, the two steel rings are connected in series and fixed through the starting pull rod, and the safety pin penetrates through a small hole in the tail of the starting pull rod. The brake device adopts pure manual braking, is simple in structure, stable, reliable, rapid in braking and strong in braking force, and can be rapidly braked in emergency situations such as power failure and car sliding, so that the construction safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a manual emergency braking device for an electric locomotive. Background Art

[0002] Typically, the slope of ordinary railway tunnels is limited to 40 / 1000 to ensure safe and stable train operation. However, in mountain rail transit, especially in railway tunnels using rack rail technology, the slope can reach 120 / 1000 or even higher. This steep environment places even more stringent demands on the anti-skid braking system of electric locomotives. As the slope increases, the electric locomotive faces a greater risk of sliding during operation, which requires the anti-skid braking system to have higher efficiency and stability.

[0003] To cope with the steep gradient of the rack railway, a three-track friction wheel locomotive was used during construction. This locomotive features an additional friction track between two conventional rails, using friction wheels to provide both driving and braking force. It is equipped with two braking methods: basic braking and emergency braking. During normal operation, basic braking is achieved by locking the friction wheels to the center track. Emergency braking relies on an emergency stop and rail hook behind the driver's cab, whose lowering is hydraulically controlled to handle emergencies.

[0004] While the emergency stop device and rail hook provide additional safety features to the basic brakes, enabling emergency braking in the event of a train slip due to brake failure, it's important to note that the hydraulically controlled rail hook has a 5-8 second delay in activation. In the event of a train slip, the braking distance increases rapidly as train speed increases linearly. Therefore, the first few seconds after a train slip occurs are crucial for preventing an accident. In the event of a train slip, the earlier the brakes are applied, the less damage is likely to occur.

[0005] Most widely used braking technologies currently rely on power system support. However, in emergencies, such as power system failure or malfunction, electric locomotives must be able to safely brake using other means. Therefore, the necessity of a manual braking system, as an important supplementary measure, is self-evident. In power outage emergencies, manual braking effectively prevents accidents caused by loss of power control, ensuring the safety of the train and its passengers. Summary of the Invention

[0006] The utility model aims to provide a manual emergency brake device for electric locomotives in steep rack railway tunnels, which has a simple structure, fast braking, pure manual operation, and is stable and reliable. In the event of a power outage and slipping of the electric locomotive due to an emergency, the device can be manually activated to quickly complete the braking.

[0007] To achieve the above objectives, the utility model discloses a manual emergency brake device for electric locomotives in a steep-slope rack railway tunnel, comprising a starting pull rod, a safety pin, a steel wire rope with a steel ring, a brake steel rod assembly, and a hinge seat, characterized in that:

[0008] The hinge seat is installed at the lower front part of the driver's cab, and the brake steel rod assembly is arranged on the hinge seat. The steel wire rope with a steel ring has its steel ring end arranged inside the driver's cab. The two steel rings overlap and are passed through the middle by the starting pull rod. The end of the steel wire rope passes through the small hole in the front of the driver's cab to the outside of the driver's cab and is connected to the brake steel rod assembly. The safety pin passes through the small hole at the end of the starting pull rod.

[0009] Wherein: the brake steel rod assembly includes a steel rod and a pin shaft, the pin shaft passes through the hinge seat and is welded to the steel rod, so that the steel rod can rotate around the hinge seat.

[0010] Among them: there are two steel wire ropes with steel rings, which are respectively arranged on the left and right sides of the driver's cab, and the two steel rings are arranged in the middle position inside the driver's cab. The starting pull rod passes through the middle and is fixed together. Lubricating oil is applied between the starting pull rod and the steel ring to ensure that it can be pulled out smoothly, and the safety pin is inserted at the end of the starting pull rod to prevent misoperation.

[0011] Among them: the steel wire rope with a steel ring, one end of the steel wire rope passes through the holes on the left and right sides of the driver's cab to the outside, and is respectively connected to the steel rods of the brake steel rod assembly, and the steel rods are lifted and the angle with the vertical is about 60 degrees.

[0012] It can be seen from the above structure that the utility model has the following effects:

[0013] 1. This utility model uses two steel wire ropes with steel rings in the driver's cab to suspend two brake rods, and the two steel rings are fixed together by a starter lever. In an emergency, remove the safety pin and pull out the starter lever, the steel rings are released, and the steel rods fall under the action of gravity and get stuck on the track to complete the braking.

[0014] 2. The utility model has a simple structure, is stable and reliable, is easy to operate, and has rapid braking. In an emergency, the process from removing the safety pin to the steel rod falling can be completed within two seconds at the fastest, quickly controlling the rapid increase in vehicle speed.

[0015] 3. The brake steel rod of the utility model is at a certain angle to the ground, which can not only hook the sleeper for braking, but also form an oblique support with the ground to provide a certain braking force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Figure 1It is a structural diagram;

[0018] In the figure: 1-starting pull rod; 2-safety pin; 3-wire rope with steel ring; 4-brake steel rod assembly; 5-hinge seat. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, the manual emergency brake device for a steep-slope rack railway tunnel electric locomotive of the present invention comprises a starting lever 1, a safety pin 2, a steel wire rope with a steel ring 3, a brake steel rod assembly 4, and a hinge seat 5. The hinge seat 5 is mounted below the exterior of the driver's cab. The brake steel rod assembly 4 comprises a steel rod and a pin. The pin passes through the hinge seat 5 and is welded to the steel rod, allowing the rod to rotate about the hinge seat. One end of each of the two steel wire ropes with steel rings 3 is welded to the steel rod. One end of the steel ring enters the driver's cab through holes on both sides above the driver's cab window, and the starting lever 1 secures the two steel rings in series. The wire rope length is set appropriately to keep the brake steel rod assembly in a suspended position. To ensure smooth removal of the starting lever 1, lubricant is applied between the starting lever 1 and the steel ring. Furthermore, to prevent the starting lever 1 from being removed due to misoperation, a safety pin 2 is inserted into its end.

[0020] When the power fails and the train slips, the driver manually applies the emergency brake, removes the safety pin 2 and quickly pulls out the starting rod 1. The steel ring constraint of the steel wire rope 3 with the steel ring disappears, and the brake steel rod assembly 4 falls rapidly under the action of gravity, resting against the ground and the sleeper, achieving manual rapid emergency braking.

[0021] The advantages of the present invention are:

[0022] 1. The brake rod on the outside of the locomotive is hoisted by two steel wire ropes with steel rings in the driver's cab. In the event of a power outage and the locomotive slips, the driver manually pulls out the start lever to achieve rapid emergency braking. It is a purely manual operation, simple and fast.

[0023] 2. The utility model has a simple structure, is stable and reliable, is easy to operate, and has rapid braking. In an emergency, the process from removing the safety pin to the steel rod falling can be completed within two seconds at the fastest, quickly controlling the rapid increase in vehicle speed.

[0024] The brake steel rod of the utility model is at a certain angle to the ground, which can not only hook the rail sleeper for braking, but also form an oblique support with the ground to provide a certain braking force, and the braking effect is good.

Claims

1. A manual emergency brake device for a high-slope rack railway tunnel electric locomotive, comprising a starting pull rod (1), a safety pin (2), a steel wire rope with a steel ring (3), a brake steel rod assembly (4) and a hinge seat (5), characterized in that: The hinge seat (5) is installed below the exterior of the driver's cab, and the brake steel rod assembly (4) includes a steel rod and a pin shaft, and the pin shaft passes through the hinge seat (5) and is welded to the steel rod; one end of the two steel wire ropes (3) with steel rings is welded to the steel rod, and one end of the steel ring enters the driver's cab through the holes on both sides above the driver's cab glass, and the two steel rings are fixed in series by the starting rod (1), and the safety pin (2) passes through the small hole at the tail end of the starting rod (1).

2. The manual emergency brake device for electric locomotives in steep-slope rack railway tunnels according to claim 1 is characterized by: The starting pull rod (1) passes through the steel rings of the two steel wire ropes (3) with steel rings, and fixes them in series.

3. The manual emergency brake device for electric locomotives in steep-slope rack railway tunnels according to claim 1 is characterized by: The end of the starting pull rod (1) is provided with a small hole, and after passing through the steel ring, the safety pin (2) is inserted into the small hole.

4. The manual emergency brake device for electric locomotives in steep-slope rack railway tunnels according to claim 1 is characterized by: One end of the steel wire rope (3) with a steel ring passes through holes on both sides above the driver's cab glass to reach the outside of the driver's cab and is welded to the steel rod of the brake steel rod assembly (4).

5. The manual emergency brake device for electric locomotives in steep-slope rack railway tunnels according to claim 1 is characterized by: The hinge seat (5) is installed below the exterior of the driver's cab and is connected to the pin of the brake steel rod assembly (4).

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