Swing arm positioning bogie static pressure adjusting device

Abstract

This utility model discloses a bogie static pressure adjustment device, relating to the field of railway vehicle bogie design and control technology. It includes a main crossbeam, with controllers installed on both sides of its upper surface. Shock-absorbing components are mounted on both sides of the main crossbeam, and side support beams are mounted on the outer surfaces of the shock-absorbing components. Through-measuring units are installed at the four corner ends of the side support beams. Compared with existing ordinary bogie static pressure adjustment devices, this bogie static pressure adjustment device automatically optimizes the static pressure distribution of the wheelsets through controller-controlled hydraulic push rods, dynamically balancing wheel weight: it adjusts the vertical load of each wheelset in real time, reducing uneven loading caused by track irregularities or uneven loads, and reducing abnormal wear on wheel flanges and rail surfaces. It also results in low maintenance costs: uniform wheel-rail contact force distribution reduces abnormal wear and extends the service life of wheelsets, rails, and key bogie components.

Description

Technical Field

[0001] This utility model relates to the field of design and control technology of rail vehicle bogies, specifically a bogie static pressure adjustment device for a swing arm positioning bogie. Background Technology

[0002] In rail vehicle bogie technology, the swing-arm positioning bogie is widely used in high-speed trains, subways, and light rail vehicles due to its advantages of simple structure, high wheelset positioning accuracy, and convenient maintenance. Its core feature is that the swing arm (positioning arm) connects the wheelset to the frame, replacing the traditional axle box tie rod, providing longitudinal and lateral stiffness, and ensuring the stability of vehicle operation.

[0003] Currently, the static pressure (vertical load) adjustment of the boom positioning bogie mainly relies on the following technologies:

[0004] Mechanical spring suspension (such as coil springs and rubber springs): The static load is adjusted by the pre-compression amount, but it cannot be dynamically adjusted.

[0005] Hydraulic / Hydro-pneumatic suspension system: Some high-end bogies use passive or semi-active hydraulic shock absorbers, which can adjust the load distribution to a limited extent.

[0006] Balance beam structure: In traditional freight car bogies, the wheel weight is balanced by lever principle, but the adjustment accuracy is low and the response is slow.

[0007] 2. Problems and shortcomings of existing technologies

[0008] Although existing technologies can meet basic operational requirements, the following key issues still exist under high-speed, heavy-load, and complex line conditions:

[0009] (1) Uneven wheel-rail contact force leads to accelerated wheel flange wear.

[0010] Traditional mechanical springs or fixed stiffness suspensions cannot adapt to uneven track conditions in real time, resulting in wheel load deviations (such as changes in unloaded / heavy loads, and wheel-rail force imbalance when passing through curves).

[0011] After long-term operation, abnormal wear occurs on the wheel flange and rail surface, increasing maintenance costs.

[0012] (2) Insufficient dynamic load adjustment capability

[0013] Passive suspension systems (such as coil springs) cannot dynamically optimize wheel-rail force distribution based on operating conditions (such as speed, load, and track conditions).

[0014] Although semi-active hydraulic systems can adjust damping, their active control over static pressure (vertical force) remains relatively weak.

[0015] (3) The contradiction between bogie stability and comfort

[0016] When the boom positioning bogie is running at high speed, it needs high longitudinal / lateral stiffness to suppress the snagging motion. However, excessive stiffness will reduce the curve passing ability and aggravate wheel-rail impact.

[0017] Existing technologies cannot simultaneously meet the requirements of high-speed stability and low wheel-rail dynamic forces.

[0018] (4) Poor adaptability to complex working conditions

[0019] In heavy-haul freight or mixed lines (such as slopes and small-radius curves), traditional static pressure adjustment methods (such as equalization beams) have limited adjustment range, which can easily lead to uneven wheel load and affect derailment safety.

[0020] 3. Technological Improvement Needs

[0021] To address the above problems, there is an urgent need for an intelligent, high-precision static pressure adjustment device that can:

[0022] Dynamically adjust the vertical load on the wheelset to balance the wheel-rail contact force;

[0023] Adaptable to different operating conditions (speed, load, line conditions);

[0024] Reduce wheel and rail wear and extend the life of bogies and tracks;

[0025] It balances high-speed stability with curve handling, enhancing ride comfort.

[0026] The bogie static pressure adjustment device with boom positioning is designed to solve these problems by integrating hydraulic / electromechanical control technology to achieve active or semi-active optimization of bogie static pressure.

[0027] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings, and proposed a bogie static pressure adjustment device for swing arm positioning. Utility Model Content

[0028] The purpose of this invention is to provide a bogie static pressure adjustment device for boom positioning to solve the problems mentioned in the background art.

[0029] To achieve the above objectives, this utility model provides the following technical solution: a bogie static pressure adjustment device for a swing arm positioning frame, comprising a main crossbeam, controllers on both sides of the upper surface of the main crossbeam, shock-absorbing components on both sides of the main crossbeam, and side support beams on the outer surfaces of the shock-absorbing components, through-measuring units at the four corner ends of the side support beams, sliding frames on the lower surfaces of the four corners of the side support beams, and magnesium alloy axle boxes slidably mounted on the inner surfaces of the sliding frames, wheelsets at the output ends of the magnesium alloy axle boxes, wheel weight measuring units on the outer surfaces of the magnesium alloy axle boxes, connecting blocks on the outer surfaces of the four corners of the side support beams, and hydraulic push rods inside the connecting blocks.

[0030] Preferably, the upper surface of the hydraulic push rod is provided with a liquid inlet, and the lower outer surface of the hydraulic push rod is provided with a liquid outlet.

[0031] Preferably, the lower end surface of the hydraulic push rod is provided with a pressure plate, and the lower surface of the pressure plate is provided with a damping telescopic rod. The outer surface of the damping telescopic rod is provided with a pressure adjusting spring, and the pressure adjusting spring is fixedly connected to the upper surface of the magnesium alloy shaft box.

[0032] Preferably, a sedimentation tank is provided on the inner surface of the side support beam, and a cooler is provided on the outer surface of the sedimentation tank. A solenoid valve is provided at the end of the cooler, and the solenoid valve is connected to the drain port through a hose.

[0033] Preferably, the upper surface of the sedimentation tank is provided with an oil storage tank, and the outer surface of the oil storage tank is provided with an oil pump, and the oil pump is connected to the inlet via a hose.

[0034] Preferably, an accumulator is provided on the outer surface of the side support beam, and the accumulator is connected to the outer surface of the liquid inlet via a hose.

[0035] Compared with the prior art, the beneficial effects of this utility model are:

[0036] 1. This utility model automatically optimizes the static pressure distribution of wheelsets and dynamically balances wheel weight by controlling hydraulic push rods through a controller: it adjusts the vertical load of each wheelset in real time, reducing uneven loading caused by track irregularities or uneven loads, and reducing abnormal wear on wheel flanges and rail surfaces. Low maintenance costs: uniform wheel-rail contact force distribution reduces abnormal wear and extends the service life of wheelsets, rails, and key bogie components; suppressing hunting motion: during high-speed straight running, optimizing wheel-rail force distribution enhances the bogie's anti-hunting stability. Enhanced derailment safety: under curve or complex track conditions, it actively adjusts wheelset load, reducing lateral wheel-rail forces and lowering the risk of derailment.

[0037] 2. This utility model improves passenger comfort by reducing the energy transmitted to the vehicle body due to wheel-rail impact or vibration, thus reducing noise and swaying and enhancing the passenger experience. It adapts to complex operating conditions: whether operating at high speeds, carrying heavy loads, or navigating small-radius curves and inclines, it automatically optimizes static pressure distribution to ensure smooth operation. It also reduces running resistance by optimizing wheel-rail contact, reducing rolling and sliding friction, thereby lowering traction energy consumption. Furthermore, it extends maintenance cycles by reducing abnormal wear on wheelsets and rails, decreasing the need for frequent maintenance, and improving operational efficiency. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0039] Figure 2 This is a three-dimensional structural diagram of the hydraulic push rod of this utility model;

[0040] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0041] In the diagram: 1. Main crossbeam; 101. Controller; 102. Shock absorber assembly; 103. Side support beam; 104. Through-measuring unit; 105. Sliding frame; 106. Magnesium alloy axle box; 107. Wheelset; 2. Connecting block; 201. Hydraulic push rod; 202. Liquid inlet; 203. Liquid outlet; 204. Pressure plate; 205. Damping telescopic rod; 206. Pressure regulating spring; 207. Wheel weight measuring unit; 3. Sedimentation tank; 301. Cooler; 302. Solenoid valve; 303. Oil storage tank; 304. Oil pump; 305. Accumulator. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] like Figures 1-2As shown, a bogie static pressure adjustment device includes controllers 101 on both sides of the upper surface of the main crossbeam 1, shock absorbers 102 on both sides of the main crossbeam 1, side support beams 103 on the outer surface of the shock absorbers 102, through measuring units 104 at the four corners of the side support beams 103, sliding frames 105 on the lower surface of the four corners of the side support beams 103, magnesium alloy axle boxes 106 slidably mounted on the inner surface of the sliding frames 105, wheelsets 107 on the output end of the magnesium alloy axle boxes 106, and wheel weight measuring units 207 on the outer surface of the magnesium alloy axle boxes 106. This technical solution automatically optimizes the static pressure distribution of the wheelsets 107 by controlling the hydraulic push rods 201 through the controllers 101, dynamically balancing the wheel weight: adjusting the vertical load of each wheelset 107 in real time, reducing the off-center load phenomenon caused by uneven track or uneven load, and reducing abnormal wear of wheel flanges and rail surfaces. Low maintenance costs: The wheel-rail contact force is evenly distributed, reducing abnormal wear and extending the service life of key components such as wheelsets, rails, and bogies.

[0044] Furthermore, connecting blocks 2 are provided on the outer surfaces of the four corners of the side support beam 103, and hydraulic push rods 201 are provided inside the connecting blocks 2. With this technical solution, the damping force of the pressure adjusting spring 206 can be controlled by pushing the pressure adjusting spring 206 through the setting of the hydraulic push rod 201, so that it can accurately adjust the static pressure of a single wheel.

[0045] Furthermore, the upper surface of the hydraulic push rod 201 is provided with a liquid inlet 202, and the lower outer surface of the hydraulic push rod 201 is provided with a liquid outlet 203. The lower surface of the hydraulic push rod 201 is provided with a pressure plate 204, and the lower surface of the pressure plate 204 is provided with a damping telescopic rod 205. The outer surface of the damping telescopic rod 205 is provided with a pressure adjusting spring 206, and the pressure adjusting spring 206 is fixedly connected to the upper surface of the magnesium alloy axle box 106. In this technical solution, by setting the pressure adjusting spring 206, the contact force between the wheel and the track can be controlled by different damping forces.

[0046] Furthermore, a sedimentation tank 3 is provided on the inner surface of the side support beam 103, and a cooler 301 is provided on the outer surface of the sedimentation tank 3. A solenoid valve 302 is provided at the end of the cooler 301, and the solenoid valve 302 is connected to the drain port 203 through a hose. This technical solution, through the setting of sedimentation tank 3 and cooler 301, can quickly cool and filter hydraulic oil, thereby improving the service life of hydraulic push rod 201.

[0047] Furthermore, an oil storage tank 303 is provided on the upper surface of the sedimentation tank 3, and an oil pump 304 is provided on the outer surface of the oil storage tank 303. The oil pump 304 is connected to the inlet 202 via a hose. This technical solution, through the setting of the oil pump 304, can continuously supply hydraulic oil to the hydraulic push rod 201.

[0048] Furthermore, an accumulator 305 is provided on the outer surface of the side support beam 103, and the accumulator 305 is connected to the outer surface of the liquid inlet 202 through a hose. With this technical solution, the accumulator 305 can store energy to help the hydraulic push rod 201 and increase the instantaneous thrust.

[0049] Working Principle: When using this boom positioning bogie static pressure adjustment device, firstly, when a single wheel edge experiences angular deviation or excessive weight in the through-measuring unit 104 and wheel load measuring unit 207, the through-measuring unit 104 controls the oil pump 304 to draw hydraulic oil from the oil reservoir 303. The oil is then piped into the hydraulic push rod 201, pushing the hydraulic push rod 201 to compress the pressure adjusting spring 206, increasing the damping force of the pressure adjusting spring 206. If an increase in instantaneous pressure is needed, the accumulator 305 is activated to supplement the pressure of the hydraulic push rod 201, ensuring bogie balance while reducing the pressure on a single wheel edge, preventing excessive pressure from causing friction on the track. When the pressure on a single wheel edge is too low, the hydraulic push rod 201 can retract to pull the pressure adjusting spring 206, reducing its damping force and ensuring bogie balance. This is the working principle of the boom positioning bogie static pressure adjustment device.

Claims

1. A bogie static pressure adjustment device for a swing arm positioning frame, comprising a main crossbeam (1), characterized in that, Both sides of the upper surface of the main crossbeam (1) are provided with controllers (101), and both sides of the main crossbeam (1) are provided with shock-absorbing components (102). The outer surface of the shock-absorbing components (102) is provided with side support beams (103). The four corner ends of the side support beams (103) are provided with through measuring units (104). The four corner lower surfaces of the side support beams (103) are provided with sliding frames (105). The inner surface of the sliding frames (105) is slidably installed with magnesium alloy axle boxes (106). The output end of the magnesium alloy axle boxes (106) is provided with wheelsets (107). The outer surface of the magnesium alloy axle boxes (106) is provided with wheel weight measuring units (207). The four corner outer surfaces of the side support beams (103) are provided with connecting blocks (2). The interior of the connecting blocks (2) is provided with hydraulic push rods (201).

2. The bogie static pressure adjustment device for a swing arm positioning frame according to claim 1, characterized in that, The upper surface of the hydraulic push rod (201) is provided with a liquid inlet (202), and the lower outer surface of the hydraulic push rod (201) is provided with a liquid outlet (203).

3. The bogie static pressure adjustment device for a swing arm positioning frame according to claim 1, characterized in that, The lower end surface of the hydraulic push rod (201) is provided with a pressure plate (204), and the lower surface of the pressure plate (204) is provided with a damping telescopic rod (205). The outer surface of the damping telescopic rod (205) is provided with a pressure adjusting spring (206), and the pressure adjusting spring (206) is fixedly connected to the upper surface of the magnesium alloy shaft box (106).

4. The bogie static pressure adjustment device for a swing arm positioning frame according to claim 1, characterized in that, The inner surface of the side support beam (103) is provided with a sedimentation tank (3), and the outer surface of the sedimentation tank (3) is provided with a cooler (301). The end of the cooler (301) is provided with a solenoid valve (302), and the solenoid valve (302) is connected to the drain port (203) through a hose.

5. The bogie static pressure adjustment device for a swing arm positioning frame according to claim 4, characterized in that, The upper surface of the sedimentation tank (3) is provided with an oil storage tank (303), and the outer surface of the oil storage tank (303) is provided with an oil pump (304), and the oil pump (304) is connected to the liquid inlet (202) by a hose.

6. The bogie static pressure adjustment device for a swing arm positioning frame according to claim 1, characterized in that, An accumulator (305) is provided on the outer surface of the side support beam (103), and the accumulator (305) is connected to the outer surface of the liquid inlet (202) through a hose.

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