Bogie weighing device and method

Abstract

The bogie weighing device comprises a weighing valve and a force transmission mechanism, an air inlet of the weighing valve is communicated with an auxiliary air cylinder, an air outlet of the weighing valve is communicated with a distribution valve in a vehicle braking system, the weighing valve is fixed to a framework of a vehicle bogie, and the force transmission mechanism is connected with the framework and can rotate around a connecting point. One end of the force transmission mechanism is connected with the weighing valve, and the other end of the force transmission mechanism is connected with the hanging bracket. Stepless regulation of vehicle braking can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway vehicle technology, in particular to a bogie weighing device and method. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] The function of the vehicle weighing device is to ensure the required braking distance of the train under the heavy vehicle condition, and to ensure that the braking force is not too large to cause vehicle failure, prolong the braking distance and endanger the safety of the train under the conditions of empty vehicle and half load.

[0004] The traditional plate spring suspension bogie, especially the plate spring suspension three-axle bogie, cannot be arranged with a stepless weighing device due to the structure of the bogie, and the vehicle braking is usually controlled by manually adjusting the distribution valve to determine the braking pressure according to the empty vehicle or the heavy vehicle, which cannot meet the needs of stepless adjustment of braking. For other working conditions of the vehicle such as half load, the braking force is too large or too small, which affects the braking effect. SUMMARY

[0005] In order to solve the above problems, the present application provides a bogie weighing device and method, which realizes stepless adjustment of vehicle braking and meets the braking needs of various working conditions of the vehicle.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] In a first aspect, a bogie weighing device is disclosed, comprising a weighing valve and a force transmission mechanism, the air inlet of the weighing valve is communicated with the auxiliary air cylinder, the air outlet of the weighing valve is communicated with the distribution valve in the vehicle braking system, the weighing valve is fixed on the frame of the vehicle bogie, the force transmission mechanism is connected with the frame and can rotate around the connecting point, one end of the force transmission mechanism is connected with the weighing valve, and the other end of the force transmission mechanism is connected with the hanger.

[0008] Further, the load transmitted to the weighing valve is equal to the vertical load borne by the frame.

[0009] Further, the weighing valve adopts a load weighing valve.

[0010] Further, the setting direction of the weighing connecting mechanism is consistent with the force bearing direction of the weighing valve.

[0011] Further, the force transmission mechanism comprises a lever mechanism and a weighing connecting mechanism, the lever mechanism is connected with the frame, the connecting point is the fulcrum of the lever mechanism, the lever mechanism can rotate around the fulcrum, one end of the lever mechanism is connected with the hanger, and the other end of the lever mechanism is connected with the weighing connecting mechanism; and the weighing connecting mechanism is connected with the weighing valve.

[0012] Further, the lever mechanism is hinged with the frame.

[0013] One end of the lever mechanism is hinged with the hanger.

[0014] The other end of the lever mechanism is hinged with the weighing connecting mechanism.

[0015] Further, the weighing connecting mechanism comprises a weighing connecting rod and a plunger, the weighing connecting rod is hinged with the lever mechanism, one end of the plunger is connected with the weighing connecting rod, and the other end of the plunger is connected with the weighing valve.

[0016] Further, the plunger is connected with the weighing connecting rod and can move along the length direction of the weighing connecting rod.

[0017] Further, the weighing valve is connected with a mounting seat, and the mounting seat is connected with the frame.

[0018] In the second aspect, a working method of the bogie weighing device is provided, and the working method comprises the following steps:

[0019] The force transmission mechanism transmits the vertical load borne by the frame to the weighing valve.

[0020] The weighing valve adjusts the inlet pressure and the outlet pressure of the weighing valve according to the load applied on the weighing valve.

[0021] The distribution valve adjusts the brake pressure according to the outlet pressure of the weighing valve.

[0022] Compared with the prior art, the bogie weighing device has the following beneficial effects:

[0023] 1. The bogie weighing device can transmit the vertical load of the vehicle to the weighing valve through the force transmission mechanism, and the inlet and outlet pressures of the weighing valve can be self-adaptively adjusted, so that the self-adaptively adjustment of the control pressure of the distribution valve is realized, and the stepless adjustment of the vehicle brake is realized.

[0024] 2. The bogie weighing device solves the problem that the plate spring type three-axle bogie cannot be installed with a stepless weighing valve, and the direct weighing valve is adopted, which belongs to a load sensing type stepless weighing valve and is irrelevant to the spring deflection of the bogie, and has damping and throttling effects, so that the influence of the vehicle vibration on the output signal pressure during high-speed operation can be eliminated, and the signal pressure is accurate and stable.

[0025] Advantages of additional aspects of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0027] Fig. 1 This is a schematic diagram of the overall structure of the device disclosed in the embodiment;

[0028] Fig. 2 A schematic structural diagram of a force transmission mechanism disclosed in an embodiment;

[0029] Fig. 3 Schematic diagram of the air inlet and outlet of the weighing valve disclosed in the embodiment.

[0030] Among them: 1. Lever mechanism, 2. Weighing connection mechanism, 3. Weighing valve, 4. Mounting seat, 5. Hanger, 11. Round pin 1, 12. Round pin 2, 13. Round pin 3, 21. Weighing connection rod, 22. Plunger, R, air inlet, T, air outlet. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0033] In the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0034] Example 1

[0035] In this embodiment, a bogie weighing device is disclosed, such as Figs. 1-3 As shown, it includes a weighing valve 3 and a force transmission mechanism. The air inlet R of the weighing valve 3 is connected to the auxiliary air cylinder, and the air outlet T of the weighing valve 3 is connected to the distribution valve in the vehicle braking system. The weighing valve 3 is fixed on the frame of the vehicle bogie, and the force transmission mechanism is connected to the frame and can rotate around the connection point. One end of the force transmission mechanism is connected to the weighing valve 3, and the other end of the force transmission mechanism is connected to the hanger 5 of the bogie. The force transmission mechanism can transfer the vertical load borne by the frame to the weighing valve 3, and ensure that the load transferred to the weighing valve 3 is consistent with the force-bearing direction of the weighing valve 3.

[0036] The hanger 5 is connected to the plate spring suspension mechanism, and the auxiliary air cylinder is fixed to the chassis of the vehicle.

[0037] The weighing valve 3 is a load weighing valve, which automatically adjusts the inlet pressure and outlet pressure of the weighing valve when the load applied to the load weighing valve changes, so that the load weighing valve 3 reaches a balance position to ensure the force balance relationship of the load weighing valve itself.

[0038] The force transmission mechanism includes a lever mechanism 1 and a weighing connection mechanism 2.

[0039] In order to cooperate with the rotation of the lever mechanism around the fulcrum, the lever mechanism is hinged to the frame in this embodiment.

[0040] Preferably, one end of the lever mechanism 1 is connected to the hanger 5 through a round pin 11, and the lever mechanism 1 can rotate around the axis of the round pin 11.

[0041] In order to accurately stepless adjustment control the brake according to the vertical load of the vehicle, the embodiment limits the load transmitted to the weighing valve to be equal to the vertical load borne by the frame.

[0042] Preferably, the embodiment limits the setting direction of the weighing connection mechanism to be consistent with the force bearing direction of the weighing valve 3, i.e.

[0043] In order to facilitate installation, the embodiment provides that the weighing connection mechanism 2 includes a weighing connection rod 21 and a plunger 22.

[0044] The plunger 22 is connected with the weighing connecting rod 21, and the plunger can move along the length direction of the weighing connecting rod.

[0045] Preferably, the plunger 22 is threadedly connected with the weighing connecting rod 21, and the length of the weighing connecting mechanism 2 is adjusted by rotating the plunger 22.

[0046] The plunger 22 is connected with the spherical surface of the weighing valve 3, that is, the force bearing surface of the weighing valve 3. The weighing valve 3 automatically adjusts the inlet pressure and the outlet pressure according to the load borne by the force bearing surface, so as to realize self-balance.

[0047] Due to the limitation of the installation space of the frame, the weighing valve 3 is horizontally or obliquely arranged in the embodiment, and the arrangement direction of the weighing connecting mechanism is consistent with the force bearing direction of the weighing valve 3, so that the load transmitted to the weighing valve 3 through the weighing connecting mechanism is consistent with the force bearing direction of the weighing valve 3.

[0048] In order to facilitate the installation and maintenance of the weighing valve 3, the weighing valve 3 is connected with the mounting seat 4, and the mounting seat 4 is connected with the bottom frame.

[0049] Preferably, the mounting seat 4 is welded with the bottom frame, and the weighing valve 3 is connected with the mounting seat 4 by bolts.

[0050] The working principle of the bogie weighing device disclosed in the embodiment is as follows: the vertical load Q of the vehicle is applied to the lever mechanism 1 through the round pin 12, the lever mechanism applies the vertical load Q to the hanger 5 through the round pin 11, the hanger 5 generates a reverse vertical force Q to the lever mechanism 1, and due to the lever ratio of the lever mechanism 1 being 1:1, the vertical force Q is converted into a load applied to the weighing valve 3 through the lever mechanism 1, and the size of the load is also Q, and the load is applied to the weighing valve 3 in a manner consistent with the force bearing direction of the weighing valve. When the weighing valve 3 is horizontally arranged, the vertical force Q is converted into a longitudinal horizontal load with a size of Q, and is applied to the force bearing surface of the weighing valve 3.

[0051] When the longitudinal horizontal load Q is applied to the load type weighing valve, according to the size of the longitudinal horizontal load, the opening degree of the inlet and the outlet in the weighing valve 3 is self-adaptively adjusted, that is, the inlet pressure and the outlet pressure are automatically adjusted, so as to establish the force balance relationship between the arc plate spring in the weighing valve 3 and the input longitudinal horizontal load, so that the load type weighing valve 3 reaches the balance position, thereby establishing the control pressure corresponding to different longitudinal forces. After the inlet pressure and the outlet pressure of the weighing valve 3 are adjusted according to the longitudinal horizontal load Q, the pressure of the distribution valve in the brake system is changed along with the outlet pressure of the weighing valve 3, so as to realize the stepless adjustment of the brake.

[0052] The bogie weighing device disclosed in the embodiment is connected with the frame of the bogie through the weighing valve and the force transmission mechanism, and the two ends of the force transmission mechanism are connected with the weighing valve and the hanger respectively, the gas outlet of the weighing valve is connected with the distribution valve, the vertical load of the vehicle can be transmitted to the weighing valve through the force transmission mechanism, the inlet pressure and the outlet pressure of the weighing valve are adaptively adjusted, the adaptive adjustment of the control pressure of the distribution valve is realized, and the stepless adjustment of the vehicle braking is realized.

[0053] Embodiment 2

[0054] In the embodiment, the working method of the bogie weighing device disclosed in the embodiment 1 is disclosed, which comprises the following steps.

[0055] The force transmission mechanism transmits the vertical load borne by the frame to the weighing valve;

[0056] The weighing valve controls the inlet pressure and the outlet pressure of the weighing valve according to the load applied on the weighing valve;

[0057] The weighing valve is connected with the distribution valve, the distribution valve adjusts the braking pressure according to the outlet pressure of the weighing valve, and the braking of the vehicle in different loading conditions is realized.

[0058] Although the specific embodiments of the present application are described above with reference to the drawings, the present application is not limited to the above embodiments, and various modifications or changes can be made by those skilled in the art without departing from the scope of the present application.

Claims

1. A bogie weighing device, characterized in that, The weighing valve is fixed on the frame of the bogie of the vehicle, the force transmission mechanism is connected with the frame and can rotate around the connecting point, one end of the force transmission mechanism is connected with the weighing valve, and the other end of the force transmission mechanism is connected with the hanger.

2. A scale for a bogie as claimed in claim 1 wherein, The load transmitted to the weighing valve is equal to the vertical load borne by the frame.

3. A scale for a bogie as claimed in claim 1 wherein, The weighing valve is a load weighing valve.

4. A scale for a bogie as claimed in claim 1 wherein, The setting direction of the weighing connecting mechanism is consistent with the force bearing direction of the weighing valve.

5. A scale for a bogie as claimed in claim 1 wherein, The force transmission mechanism comprises a lever mechanism and a weighing connecting mechanism, the lever mechanism is connected with the frame, the connecting point is the fulcrum of the lever mechanism, the lever mechanism can rotate around the fulcrum, one end of the lever mechanism is connected with the hanger, and the other end of the lever mechanism is connected with the weighing connecting mechanism, and the weighing connecting mechanism is connected with the weighing valve.

6. A scale assembly for a bogie as claimed in claim 5 wherein, The lever mechanism is hinged with the frame; one end of the lever mechanism is hinged with the hanger; and the other end of the lever mechanism is hinged with the weighing connecting mechanism.

7. A scale assembly for a bogie as claimed in claim 5 wherein, The weighing connecting mechanism comprises a weighing connecting rod and a plunger; the weighing connecting rod is hinged with the lever mechanism, one end of the plunger is connected with the weighing connecting rod, and the other end of the plunger is connected with the weighing valve.

8. A scale assembly for a bogie as claimed in claim 7, wherein, The plunger is connected with the weighing connecting rod, and the plunger can move along the length direction of the weighing connecting rod.

9. A scale for a bogie as claimed in claim 1 wherein, The weighing valve is connected with the mounting seat, and the mounting seat is connected with the frame.

10. A method of operating a scale for a bogie as claimed in any one of claims 1 to 9, wherein, The force transmission mechanism transmits the vertical load borne by the frame to the weighing valve; The weighing valve adjusts the inlet pressure and the outlet pressure of the weighing valve according to the load applied on the weighing valve; The distribution valve adjusts the brake pressure according to the outlet pressure of the weighing valve. ​

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