Air braking system for automatic overspeed control of new energy locomotive

Abstract

The utility model provides an air braking system for automatic overspeed control of a new energy locomotive, and belongs to the technical field of tractor braking systems. Comprising a main air bag, an independent brake automatic valve, an operating valve and a brake cylinder, the main air bag is connected with the independent brake automatic valve through a main air path, the independent brake automatic valve is connected with the operating valve through a manual control air path, the operating valve is connected with the brake cylinder through a brake control air path, and an automatic control air path is further connected between the main air path and the manual control air path. An electromagnetic control valve, an air pressure regulating and reducing valve and a one-way valve II are sequentially connected to the automatic control air path, the electromagnetic control valve is connected with a buzzing signal line, and a one-way valve I is arranged on the manual control air path between the automatic control air path and the independent braking automatic valve. According to the utility model, automatic deceleration braking is realized, the manual operation frequency of a driver is reduced, the labor intensity of the driver is reduced, and the safety coefficient is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tractor brake systems, and in particular relates to an air brake system for automatic overspeed control of new energy locomotives. Background Art

[0002] The ZTD new energy tractor (ZTY internal combustion tractor) produced by the company has a designed maximum speed of 30km / h. According to the user's line conditions and the requirements of the towed trucks, some users require that the locomotive speed should not exceed 25km / h (a certain set value). Figure 2 As shown, the brief description is as follows: the driver operates the separate brake automatic valve 2 in the cab, the pressurized air enters the working valve 3, the valve core in the working valve 3 moves, and the pressurized air is discharged from an air port of the working valve 3 to control the brake cylinder 4, thereby achieving the purpose of braking. When the locomotive speed exceeds the set value, a "buzzing sound" will be emitted. At this time, the driver needs to implement air braking. As the speed increases, the driver needs to keep braking, especially when the locomotive is pulling a freight car downhill, the locomotive speed keeps increasing due to inertia, which increases the driver's work intensity and easily causes the driver to lose concentration. It is therefore necessary to propose improvements to the above problems. Utility Model Content

[0003] The technical problem solved by the utility model is to provide an air brake system for automatic overspeed control of new energy locomotives. The utility model aims to improve the air brake system of traction locomotives, realize automatic deceleration braking, reduce the driver's manual operation frequency, reduce the driver's labor intensity, and improve the safety factor.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The air brake system for automatic overspeed control of new energy locomotives comprises a main air bag, an individual brake automatic valve, an application valve and a brake cylinder, wherein the main air bag is connected to the individual brake automatic valve through a main air passage, the individual brake automatic valve is connected to the application valve through a manual control air passage, the application valve is connected to the brake cylinder through a brake control air passage, an automatic control air passage is also connected between the main air passage and the manual control air passage, an electromagnetic control valve, an air pressure regulating and reducing valve and a one-way valve II are sequentially connected to the automatic control air passage, the electromagnetic control valve is connected to a buzzer signal line, and a one-way valve I is arranged on the manual control air passage between the automatic control air passage and the individual brake automatic valve.

[0006] According to the air brake system with overspeed automatic control provided by the utility model: one end of the automatic control air path is connected to the manual control air path through a three-way joint I, and the other end of the automatic control air path is connected to the main air path through a three-way joint II.

[0007] According to the air brake system with automatic overspeed control provided by the utility model: the total air path is connected with a duct dust filter and a cut-off valve.

[0008] According to the air brake system with automatic overspeed control provided by the utility model: the main air bag is provided with a safety valve, and the air inlet path of the main air bag is connected with an oil-water separator, a unloading valve and an air compressor.

[0009] According to the air brake system with overspeed automatic control provided by the utility model: the total air path and the brake control air path are connected to a double-needle pressure gauge.

[0010] The advantages of this utility model compared with the prior art:

[0011] 1. This scheme is to solve the problems existing in the operation process of the original air brake system of the traction locomotive. According to the use habits of the locomotive, the original locomotive air brake principle is studied. Combined with the electrical control system, the original air brake system is improved on the basis of not affecting the normal use of air brake by the original vehicle driver. Electromagnetic control valves, air pressure regulating and reducing valves, one-way valves and other components are added to the air brake pipeline. The original buzzer signal line when exceeding the set value is used as the control line in the electrical control system. When the speed is greater than the set value, the buzzer signal line is connected to the electromagnetic control valve circuit, and the air system air path enters the brake control valve through the air regulating and reducing valve and the one-way valve, and the locomotive is automatically decelerated and braked, which reduces the driver's manual operation frequency, reduces the driver's labor intensity, and improves the safety factor.

[0012] 2. The air pressure-regulating and reducing valve added in this scheme can manually adjust the outlet pressure of the pressure-reducing valve according to the weight of the towing truck and the size of the slope, so that the braking force matches the towing truck; the manual pressure-regulating and reducing valve has its own pressure gauge to display the outlet pressure of the pressure-regulating valve; two one-way valves are set in the pipeline to ensure that the original vehicle braking system and the newly added braking control do not affect each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the principle structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the principle structure of the original air brake system of the traction locomotive. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0017] See also Figure 1-2 , describe the embodiments of the present utility model in detail.

[0018] Example: Air brake system for automatic overspeed control of new energy locomotives, see Figure 1 As shown, it includes a total air bag 1, an individual brake automatic valve 2, an application valve 3 and a brake cylinder 4, the total air bag 1 is connected to the individual brake automatic valve 2 through a total air path 5, the individual brake automatic valve 2 is connected to the application valve 3 through a manual control air path 6, the application valve 3 is connected to the brake cylinder 4 through a brake control air path 22, an automatic control air path 7 is also connected between the total air path 5 and the manual control air path 6, the automatic control air path 7 is sequentially connected to an electromagnetic control valve 11, an air pressure regulating and reducing valve 12 and a one-way valve II 13, the electromagnetic control valve 11 is connected to a buzzer signal line 14, and a one-way valve I 10 is provided on the manual control air path 6 between the automatic control air path 7 and the individual brake automatic valve 2.

[0019] In this embodiment, in order to solve the problems existing in the existing air brake system of the traction locomotive, the air brake principle of the original locomotive is studied according to the locomotive usage habits. Combined with the electrical control system, the original air brake system is improved on the basis of not affecting the normal use of air brakes by the original vehicle driver. Electromagnetic control valves, air pressure regulating and reducing valves, one-way valves and other components are added to the air brake pipeline. The original buzzer signal line when exceeding the set value is used as the control line in the electrical control system. When the speed is greater than the set value (25km / h), the buzzer signal line is connected to the electromagnetic control valve circuit, and the air system air path enters the brake control valve through the air regulating and reducing valve and the one-way valve, and the locomotive is decelerated and braked, which reduces the driver's manual operation frequency, reduces the driver's labor intensity, and improves the safety factor.

[0020] The improvement of the above-mentioned braking system in this embodiment has no effect on the original air brake, and the driver can control the braking of the locomotive according to the original operating procedures.

[0021] In addition, the air pressure regulating and reducing valve added to the air brake system can manually adjust the outlet pressure of the pressure reducing valve according to the weight of the towing truck and the size of the slope, so that the braking force matches the towing truck. The manual pressure regulating and reducing valve has its own pressure gauge to display the outlet pressure of the pressure regulating valve. Two one-way valves are set in the pipeline to prevent the original vehicle braking system and the newly added braking control from affecting each other.

[0022] According to the air brake system with overspeed automatic control provided by the utility model: one end of the automatic control air path 7 is connected to the manual control air path 6 through a three-way joint I8, and the other end of the automatic control air path 7 is connected to the main air path 5 through a three-way joint II9. The three-way joint can realize the quick connection between the air path pipelines, making the operation convenient and quick.

[0023] According to the air brake system with automatic overspeed control provided by the utility model: the main air path 5 is connected with a duct dust filter 16 and a cut-off valve 17, which are used to filter the air passing through the duct to prevent impurities from flowing into the subsequent components and affecting them.

[0024] According to the air brake system with overspeed automatic control provided by the utility model: the main air bag 1 is provided with a safety valve 15, and the air inlet path of the main air bag 1 is connected with an oil-water separator 18, an unloading valve 19 and an air compressor 20, which are used to ensure the pressure and other parameters of the air in the main air bag.

[0025] According to the air brake system with automatic overspeed control provided by the utility model: the total air path 5 and the brake control air path 22 are connected to a double-needle pressure gauge 21 for monitoring the pressure of the gas in the pipeline.

[0026] The control principle of the improved electromagnetic control valve of the utility model is as follows: the driver does not operate the separate brake automatic valve 2. As the locomotive speed increases, when the speed reaches the "set allowable value", the collected signal is transmitted to the original buzzer and the electromagnetic control valve 11 is connected at the same time. The pressure air reaches the air pressure regulating and reducing valve 12 from the electromagnetic control valve 11, and then passes through the one-way valve II 13 and the three-way joint I 8. The pressure air enters the action valve 3 (the one-way valve I 10 is added to the original circuit, and the pressure air cannot enter the separate brake automatic valve 2; the one-way valves at both ends of the three-way joint I 8 ensure that the pressure air on both sides of the separate brake automatic valve 2 and the air pressure regulating and reducing valve 12 do not affect each other), the valve core in the action valve 3 moves, and the pressure air is discharged from an air port of the action valve 3 to control the brake cylinder 4 to achieve the braking effect. When the speed drops below the set value, the control signal is disconnected and the braking ends; when the speed reaches the set value again, this action is repeated. The braking system realizes automatic deceleration braking, reduces the driver's manual operation frequency, reduces the driver's labor intensity, and improves the safety factor.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An air brake system for automatic overspeed control of a new energy locomotive, comprising a main air bag (1), an individual brake automatic valve (2), an application valve (3) and a brake cylinder (4), wherein the main air bag (1) is connected to the individual brake automatic valve (2) via a main air passage (5), the individual brake automatic valve (2) is connected to the application valve (3) via a manual control air passage (6), and the application valve (3) is connected to the brake cylinder (4) via a brake control air passage (22), characterized in that: An automatic control air path (7) is also connected between the total air path (5) and the manual control air path (6); an electromagnetic control valve (11), an air pressure regulating and reducing valve (12) and a check valve II (13) are sequentially connected to the automatic control air path (7); the electromagnetic control valve (11) is connected to a buzzer signal line (14); and a check valve I (10) is provided on the manual control air path (6) between the automatic control air path (7) and the individual brake automatic valve (2).

2. The air brake system for automatic overspeed control of new energy locomotives according to claim 1 is characterized in that: One end of the automatic control air path (7) is connected to the manual control air path (6) via a three-way connector I (8), and the other end of the automatic control air path (7) is connected to the main air path (5) via a three-way connector II (9).

3. The air brake system for automatic overspeed control of new energy locomotives according to claim 1 is characterized in that: The main air passage (5) is connected to a duct dust filter (16) and a cut-off valve (17).

4. The air brake system for automatic overspeed control of new energy locomotives according to claim 1 is characterized in that: The main air bag (1) is provided with a safety valve (15), and the air inlet path of the main air bag (1) is connected with an oil-water separator (18), a load relief valve (19) and an air compressor (20).

5. The air brake system for automatic overspeed control of new energy locomotives according to claim 1 is characterized in that: The total air passage (5) and the brake control air passage (22) are connected to a double-needle pressure gauge (21).

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