Traction protection device for metro vehicle

Abstract

The utility model relates to a metro vehicle traction protection device which comprises a middle air box, a left traction box and a right traction box. The left traction box and the right traction box are connected through a middle air box, an air inlet is formed in the bottom of the middle air box, a fan is arranged in the middle air box, a left air duct and a right air duct which are communicated with the left traction box and the right traction box are arranged in the middle air box respectively, and the fan forms heat dissipation airflow and sends the heat dissipation airflow into the left air duct and the right air duct; a wire hole for connecting the left traction box and the right traction box is formed in the middle air box in a penetrating manner; slide ways are arranged on the inner walls of the left traction box and the right traction box, and circuit boards are arranged on the slide ways in a sliding mode. A dustproof net and a mounting block are arranged in the middle and on the upper side of the outer end of each of the left traction box and the right traction box respectively, and the mounting blocks are fixedly connected with the mounting frame. One or two air sources are formed in the middle, a heat dissipation air source is formed in the middle of the whole traction box, heat dissipation air is supplied to the two sides with the middle as the center, then the heat dissipation stroke is shortened, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of subways, in particular to a traction protection device for subway vehicles. Background Art

[0002] The subway, as an efficient and large-capacity public transportation system in the city, is powered by electricity and runs on fully enclosed tracks. Its central urban lines are cleverly hidden in underground tunnels to reduce the impact on ground traffic and landscape.

[0003] The traction system is a component of the train drive system. Its main purpose is to invert the DC voltage on the line network into a three-phase voltage with variable amplitude and frequency to provide appropriate energy for the operation of the traction motor. The traction system provides the required power and braking force for the train and is used to control the operation of the train motor. It consists of high-speed switches, main circuits, converters and their control units, brake resistors and other components.

[0004] The subway traction system box is a rectangular structure. The current heat dissipation structure is to install a fan on one side, and the opposite side is the heat dissipation outlet. The air source is sent from one end to the other end along the length of the box. However, due to the long length of the box, the heat will gradually accumulate from one end to the other, and the heat dissipation effect is poor, which cannot meet people's needs. Based on this, it is necessary to study a subway vehicle traction protection device. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a subway vehicle traction protection device, which effectively solves the problem that the existing traction box is too long in the length direction and the wind source is sent in from one side, resulting in heat accumulation on the opposite side and poor heat dissipation effect.

[0006] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a subway vehicle traction protection device, comprising a central air box, a left traction box, and a right traction box; the left traction box and the right traction box are connected via the central air box, an air inlet is provided at the bottom of the central air box, a fan is configured in the central air box, a left air duct and a right air duct are respectively provided in the central air box, which communicate with the left traction box and the right traction box, the fan forms a heat dissipation airflow and sends it into the left air duct and the right air duct; a wire hole is provided through the central air box for connecting the left traction box and the right traction box;

[0007] Slideways are provided on the inner walls of the left traction box and the right traction box, and circuit boards are slidably arranged on the slideways; dustproof nets and mounting blocks are respectively provided on the middle and upper sides of the outer ends of the left traction box and the right traction box, and the mounting is fixedly connected to the mounting frame.

[0008] Furthermore, the fan is fixed at the bottom of the center air box, and an air chamber connected to the fan outlet is provided in the center air box. The two sides of the air chamber are connected to the left traction box and the right traction box on both sides through the left air duct and the right air duct; baffles are provided in the left air duct and the right air duct, and air holes are opened on the baffles.

[0009] Furthermore, the air holes are circular holes or strip-shaped holes, and are correspondingly arranged on the upper and lower sides of the slideway.

[0010] Furthermore, an air chamber is provided inside the middle air box, and the two sides of the air chamber are connected to the left traction box and the right traction box on both sides through the left air duct and the right air duct. The air chamber is connected to the air inlet, and the fans are correspondingly arranged in the left air duct and the right air duct.

[0011] Furthermore, a partition is provided in the air chamber, which divides the air chamber into a left air chamber and a right air chamber, and the left air chamber and the right air chamber are respectively connected to the left air duct and the right air duct.

[0012] Furthermore, the stroke box is connected to the left traction box and the right traction box through flanges.

[0013] Furthermore, support pads are provided at the bottom of the left traction box and the bottom of the right traction box.

[0014] The beneficial effects of the above technical solution are: the utility model is equipped with a central air box in the middle, and side traction boxes on both sides, namely the left traction box and the right traction box. A fan is arranged in the central air box, thereby forming a wind source in the middle, and blowing air along the left air duct and the right air duct to the left traction box and the right traction box on both sides, greatly shortening the heat dissipation stroke. A wire hole connecting the left traction box and the right traction box is also arranged in the central air box, so that the circuit boards in the two traction boxes can be connected to each other, thereby forming a traction box as a whole.

[0015] Structurally, the center air box is connected to the left traction box and the right traction box on both sides through flanges. The left traction box and the right traction box on both sides are connected to the mounting frame at the bottom of the car through mounting blocks respectively, and corresponding dust screens and air outlets are configured on the traction boxes on both sides.

[0016] In the configuration of the central air source, the utility model can use a fan to supply air to the air chamber, and use the air ducts and baffles on both sides of the air chamber to achieve directional output of the airflow, so that precise heat dissipation can be achieved from the top and bottom of the circuit board; in another embodiment, the utility model uses two opposite fans to supply air to the traction boxes on both sides respectively, to achieve high-power heat dissipation of the two boxes.

[0017] The utility model has a novel structure. The basic concept is to form one or two air sources in the middle, form a heat dissipation air source from the middle of the entire traction box, and supply heat dissipation air to both sides with the middle as the center, thereby shortening the heat dissipation stroke and improving the heat dissipation effect. At the same time, pull-out circuit boards are provided in the traction boxes on both sides, which are connected through wire holes configured in the middle air box. On the basis of meeting the overall function of the traction box, the heat dissipation effect is greatly improved, and the operation reliability and safety of the subway vehicle are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

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

[0020] Figure 3 This is a schematic diagram of the bottom-up structure of the present invention;

[0021] Figure 4 This is a side structural diagram of the present utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the utility model;

[0023] Figure 6 Schematic diagram of the implementation structure of the baffle;

[0024] Figure 7 Schematic diagram of the implementation structure of dual fans;

[0025] Figure 8 Schematic diagram of the coordinated structure of the air duct and fan.

[0026] Figure markings: 1-center air box, 2-left traction box, 3-right traction box, 4-outlet dustproof net, 5-mounting block, 6-mounting frame, 7-air inlet, 8-inlet dustproof net, 9-support pad, 10-air chamber, 11-wire hole, 12-fan, 13-baffle, 14-air hole, 15-slide. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0028] Example 1. This example aims to provide a subway vehicle traction protection device, which is mainly used to optimize and improve the subway's traction protection box. The subway traction box is a rectangular box with a fan on one side and an air outlet on the other side. A dust net is provided at the air outlet, and the whole is fixedly connected to the mounting frame through a mounting block. However, this structure is long in length. During the heat dissipation process, the wind source blows from one side to the other, and heat will accumulate, resulting in a serious decrease in the heat dissipation effect of the circuit board near the air outlet. Based on this, this example provides a subway vehicle traction protection device, which aims to improve the heat dissipation effect.

[0029] like Figure 1-4 Shown in the figure is a traction protection device for a subway vehicle, comprising a center air box 1, a left traction box 2 and a right traction box 3; in this embodiment, the left traction box 2 and the right traction box 3 are connected through the center air box 1, and in a specific connection method, the left and right sides of the center air box 1 can be fixedly connected to the traction boxes on both sides through connecting flanges respectively, and in terms of shape structure, the center air box 1, the left traction box 2 and the right traction box 3 are all square internal hollow structures, an air source is arranged in the center air box 1, and electrical components are respectively arranged in the left traction box 2 and the right traction box 3, thereby achieving the purpose of configuring the air source from the middle to both sides.

[0030] In the specific structure, an air inlet 7 is provided at the bottom of the center air box 1, an inlet dust screen 8 is provided at the air inlet 7, a fan 12 is arranged in the center air box 1, and a left air duct and a right air duct connecting the left traction box 2 and the right traction box 3 are respectively provided in the center air box 1. The fan 12 forms a heat dissipation airflow and sends it into the left air duct and the right air duct.

[0031] In this embodiment, Figure 6 As shown in the figure, the heat dissipation airflow is arranged by a fan 12. In the specific structure, the fan 12 is fixed to the bottom of the middle air box 1. The middle air box 1 is provided with a wind chamber 10 connected to the outlet of the fan 12. The two sides of the wind chamber 10 are connected to the left traction box 2 and the right traction box 3 on both sides through the left air duct and the right air duct; a baffle 13 is provided in the left air duct and the right air duct, and air holes 14 are opened on the baffle 13. The air holes 14 are circular holes or strip holes and are correspondingly arranged on the upper and lower sides of the slide. Baffles 13 are provided in the left and right air ducts, and air holes 14 are opened on the baffles. This structure helps to evenly distribute the airflow. The design of the air holes (circular holes or strip holes) further enhances the heat dissipation effect and takes into account the corresponding position with the circuit board on the slide to ensure the targeted and effective heat dissipation.

[0032] A wire hole 11 for connecting the left traction box 2 and the right traction box 3 is provided inside the center wind box 1; in order to enable the internal circuit boards of the left traction box 2 and the right traction box 3 to be connected, this embodiment opens a wire hole 11 in the center wind box 1 to provide a guarantee for the connection of the internal components of the two boxes.

[0033] A slide 15 is provided on the inner wall of the left traction box 2 and the right traction box 3, and a circuit board is slidably configured on the slide 15. Specifically, the circuit board can be configured on a board rack, and sliders adapted to the slide are provided on both sides of the board rack, so that the board rack can be pulled out in a pull-out manner, which is convenient for the inspection and maintenance of the circuit board; a dustproof net and a mounting block 5 are respectively provided on the middle and upper sides of the outer ends of the left traction box 2 and the right traction box 3. In this embodiment, an outlet dustproof net 4 is provided on the outer side of the two traction boxes, and a mounting block is provided in the upper area. The mounting block 5 is fixed together with the mounting frame 6 by a screw and a double nut; a support pad 9 is provided at the bottom of the left traction box 2 and the right traction box 3, which is convenient for placing on the ground during disassembly and maintenance.

[0034] This embodiment features a central air box 1 in the middle, flanked by side traction boxes. A fan 12 is installed within the central air box 1, creating a central air source that blows air along the left and right air ducts to the left and right traction boxes 2 and 3 on either side, significantly shortening the heat dissipation process. The central air box 1 also includes a wiring hole connecting the left and right traction boxes 2 and 3, allowing them to be interconnected to form a single traction box. This design delivers the cooling airflow directly into the left and right traction boxes 2 and 3, effectively improving the heat dissipation efficiency of the traction boxes. The airflow generated by the fan 12 can directly dissipate heat from heat-generating components such as circuit boards, helping to maintain the normal operating temperature of the internal components of the traction boxes and extend their service life.

[0035] Example 2: This example is basically the same as Example 1, except that this example further describes the structure of the air chamber 10.

[0036] like Figure 7-8 As shown in , in this embodiment, two fans 12 are used for targeted air supply. In the specific structure, an air chamber 10 is provided inside the middle air box 1. The two sides of the air chamber 10 are connected to the left traction box 2 and the right traction box 3 on both sides through the left air duct and the right air duct. The air chamber 10 is connected to the air inlet 7, and the fans 12 are correspondingly arranged in the left air duct and the right air duct. A partition is provided in the air chamber 10, which divides the air chamber 10 into a left air chamber 10 and a right air chamber 10. The left air chamber 10 and the right air chamber 10 are respectively connected to the left air duct and the right air duct to avoid mutual interference of the incoming air. In this embodiment, air is supplied to the traction boxes on both sides by two opposite fans 12. The independent fans 12 provide air sources for the corresponding traction boxes respectively. The air supply power is large, ensuring the heat dissipation efficiency of the two boxes.

[0037] The above-described embodiments of the present invention do not constitute limitations on the scope of protection of the present invention. The basic concept of the present invention is to form one or two air sources in the middle, creating a heat dissipation air source from the middle of the entire traction box, and to supply heat dissipation air to both sides with the middle as the center, thereby shortening the heat dissipation distance and improving the heat dissipation effect. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A subway vehicle traction protection device, characterized by: The central air box comprises a central air box, a left traction box and a right traction box; the left traction box and the right traction box are connected via the central air box, an air inlet is provided at the bottom of the central air box, a fan is provided in the central air box, a left air duct and a right air duct are provided in the central air box respectively, the fan forms a heat dissipation airflow and sends it into the left air duct and the right air duct; a wire hole for connecting the left traction box and the right traction box is provided through the central air box; Slideways are provided on the inner walls of the left traction box and the right traction box, and circuit boards are slidably arranged on the slideways; dustproof nets and mounting blocks are respectively provided on the middle and upper sides of the outer ends of the left traction box and the right traction box, and the mounting is fixedly connected to the mounting frame.

2. The subway vehicle traction protection device according to claim 1, characterized in that: The fan is fixed at the bottom of the center air box, and an air chamber connected to the fan outlet is provided in the center air box. The two sides of the air chamber are connected to the left traction box and the right traction box on both sides through the left air duct and the right air duct; baffles are provided in the left air duct and the right air duct, and air holes are opened on the baffles.

3. The subway vehicle traction protection device according to claim 2, characterized in that: The air holes are circular holes or strip-shaped holes and are correspondingly arranged on the upper and lower sides of the slideway.

4. The subway vehicle traction protection device according to claim 1, characterized in that: An air chamber is provided inside the middle air box, and both sides of the air chamber are connected with the left traction box and the right traction box on both sides through the left air duct and the right air duct. The air chamber is connected with the air inlet, and the fans are correspondingly arranged in the left air duct and the right air duct.

5. The subway vehicle traction protection device according to claim 4, characterized in that: A partition is provided in the air chamber, which divides the air chamber into a left air chamber and a right air chamber. The left air chamber and the right air chamber are communicated with the left air duct and the right air duct respectively.

6. The subway vehicle traction protection device according to any one of claims 1 to 5, characterized in that: The stroke box is connected to the left traction box and the right traction box through flanges.

7. The subway vehicle traction protection device according to claim 6, characterized in that: The bottoms of the left traction box and the right traction box are both provided with support pads.

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