A test bench device for axle forced cooling brakes

Abstract

The utility model provides a kind of axle forced cooling brake test bench device, comprising: integrated box, and the hydraulic system being connected by hard pipe and being arranged in integrated box;Integrated box is equipped with multiple quick-change connectors, for connecting oil inlet, oil return interface and vehicle brake test interface;Hydraulic system includes liquid filling valve group, cut-off valve group and shunt valve group connected in oil circuit order;The oil inlet of liquid filling valve group is connected to pump station by quick-change connector, its priority port is connected to accumulator, and its working port is connected to the oil inlet of cut-off valve group;Liquid filling valve group is used to provide pressure for hydraulic system;The oil outlet of cut-off valve group is connected to the oil inlet of shunt valve group;Two output interfaces of shunt valve group are respectively connected to the oil inlet of vehicle front axle and rear axle to be tested by quick-change connector;First ball valve switch, one end is connected to accumulator, and the other end is connected to the brake port of vehicle front axle and rear axle to be tested by quick-change connector.

Description

Technical Field

[0001] This utility model relates to the field of vehicle testing technology, specifically to a test bench device for axle forced cooling brakes. Background Technology

[0002] The braking system must pass a test bench inspection before leaving the factory. Normal testing of the drive axle cooling requires connecting the oil inlet, return, and brake release systems. Traditional testing involves directly connecting the pump station to various valve assemblies, accumulators, brakes, sensors, pressure gauges, flow meters, etc. This method, when laid out horizontally, occupies a large area, and the crisscrossing pipelines are extremely inconvenient. Furthermore, disassembly and installation of the pipelines are quite troublesome, and both processes result in oil waste.

[0003] Therefore, improving the convenience of testing is a key concern for those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a test bench device for axle forced cooling brakes, which can solve the problems of complex pipeline connections and oil leakage.

[0005] To achieve the above objectives, this utility model provides a test bench device for axle forced cooling brake housing, comprising:

[0006] An integrated housing and a hydraulic system housed within the integrated housing and connected by rigid pipes; the integrated housing is provided with multiple quick-connect couplings for connecting an oil inlet port, an oil return port, and a vehicle brake test port;

[0007] The hydraulic system includes a filling valve group, a shut-off valve group, and a diverting valve group connected in sequence according to the oil circuit.

[0008] The inlet of the filling valve assembly is connected to the pump station via the quick-connect coupling, its priority port is connected to the accumulator, and its working port is connected to the inlet of the shut-off valve assembly; the filling valve assembly is used to provide pressure to the hydraulic system.

[0009] The oil outlet of the throttling valve assembly is connected to the oil inlet of the diverting valve assembly;

[0010] The flow divider valve assembly is divided into two passages, and the two output ports are respectively connected to the oil inlets of the front axle and rear axle of the vehicle under test through the quick-connect coupling.

[0011] The first ball valve switch has one end connected to the accumulator and the other end connected to the brake ports of the front and rear axles of the vehicle to be tested via the quick-connect coupling.

[0012] The hydraulic system also includes a pressure monitoring unit for monitoring system pressure.

[0013] In an optional configuration, the filling valve assembly integrates a first priority valve and a shut-off valve.

[0014] In an optional embodiment, the flow-stopping valve assembly integrates:

[0015] A second priority valve is used to limit the flow rate to the diversion valve assembly;

[0016] The relief valve is used to maintain the pressure of the cooling oil.

[0017] The first flow distribution valve is used to ensure that the flow rates at its two output ends are consistent.

[0018] In the optional embodiment, the flow divider valve group integrates a second flow distribution valve and two check valves to supply cooling oil to the front and rear axles respectively, and to ensure that the output oil pressure of the two paths is consistent.

[0019] In an optional embodiment, the pressure monitoring unit includes a high-pressure gauge for monitoring the pressure of the accumulator and a low-pressure gauge for monitoring the pressure of the cooling circuit. The high-pressure gauge and the low-pressure gauge are centrally located on the central control panel of the integrated housing.

[0020] In an optional configuration, the hydraulic system further includes a second ball valve switch, one end of which is connected to the accumulator and the other end of which is connected to the return port.

[0021] The beneficial effects of this utility model are as follows:

[0022] The test bench integrates all valve assemblies and hydraulic components, eliminating the problem of complex and tangled piping. Furthermore, all input and output connections are made via quick-connect couplings. Installation and disassembly are rapid, and oil contamination is minimal. Attached Figure Description

[0023] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which the same reference numerals generally represent the same components.

[0024] Figure 1 This is a schematic diagram of the structure of the vehicle axle forced cooling brake test bench device in one embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Filling valve assembly; 2-Accumulator; 3-Second ball valve switch; 4-Quick-connector; 5-Stop valve assembly; 6-Diverter valve assembly; 7-Low pressure gauge; 8-High pressure gauge; 9-First ball valve switch; 11-First priority valve; 12-Stop valve; 13-Second priority valve; 14-Relief valve; 15-First flow distribution valve; 16-Second flow distribution valve; 17-Check valve. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and drawings. However, it should be noted that the concept of the present invention can be implemented in many different forms and is not limited to the specific embodiments described herein. The accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0028] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this utility model, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion.

[0029] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below” or “under” the other element or feature will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0030] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0031] Example

[0032] Reference Figure 1 This embodiment provides a test bench device for axle forced cooling brakes, including:

[0033] An integrated housing, and a hydraulic system installed inside the integrated housing and connected by rigid pipes; the integrated housing is provided with multiple quick-connect couplings 4 for connecting oil inlet ports (inlet for pump station and axle), oil return ports (oil return ports 1 to 7) and vehicle brake test ports (BRAKE).

[0034] The hydraulic system includes a filling valve group 1, a shut-off valve group 5, and a diverting valve group 6 connected in sequence according to the oil circuit.

[0035] The oil inlet of the filling valve assembly 1 is connected to the pump station through the quick-connect coupling 4, its priority port R is connected to the accumulator 2, and its working port B is connected to the oil inlet of the shut-off valve assembly 5; the filling valve assembly 1 is used to provide pressure to the hydraulic system.

[0036] The oil outlet of the throttling valve assembly 5 is connected to the oil inlet of the diverting valve assembly 6.

[0037] The diverter valve assembly 6 is divided into two passages, and the two output ports are respectively connected to the oil inlets of the front axle and the rear axle of the vehicle under test through the quick-connect coupling.

[0038] The first ball valve switch 9 is connected at one end to the accumulator 2 and at the other end to the brake ports of the front and rear axles of the vehicle to be tested via the quick-connect coupling 4.

[0039] The hydraulic system also includes a pressure monitoring unit for monitoring system pressure.

[0040] Specifically, the filling valve assembly 1 integrates a first priority valve 11 and a shut-off valve 12. The oil inlet of the filling valve assembly 1 is connected to the pump station via a quick-connect coupling 4, providing pressure to the entire hydraulic system. The accumulator 2 is connected to port R of the filling valve assembly 1. The return port of the shut-off valve 12 is connected to return port 1 via quick-connect coupling 4. The replenishment pressure range of the filling valve assembly 1 is 120 bar to 155 bar. After the vehicle starts, the pressure at port R is replenished to 155 bar and then shut off. When the pressure drops below 120 bar, replenishment continues until the pressure reaches 155 bar. The first priority valve 11 prioritizes supplying oil to port R, and after satisfying port R, it supplies oil to port B. The shut-off valve 12 depresses when port R reaches 155 bar to control the pressure at port R.

[0041] The flow control valve assembly 5 mainly performs flow control, pressure reduction, and flow diversion. Internally, it integrates: a second priority valve 13, used to limit the flow rate to the flow diversion valve assembly 6 (e.g., if the inlet oil is 100L, the second priority valve 13 prioritizes 40L, so only 40L of flow is allowed afterward); a relief valve 14, used to ensure the cooling oil pressure, which can be set to 10 bar; and a first flow distribution valve 15, used to ensure that the flow rates at its two output ends are consistent. End A is connected to the inlet of the flow diversion valve assembly 6, and end B is connected to the return oil port 7.

[0042] The flow divider valve group 6 integrates a second flow distribution valve 16 and two 0.5 Bar check valves 17, which supply cooling oil to the front and rear axles respectively and ensure that the oil pressure of the two circuits is consistent.

[0043] The throttling valve group 5 and the diverting valve group 6 mainly utilize flow distribution valves to ensure that the flow rates at ports A and B are consistent.

[0044] The hydraulic system also includes a second ball valve switch 3, one end of which is connected to the accumulator 2, and the other end is connected to the No. 5 return port through the third quick-connect coupling 4. Together with the first ball valve switch 9, it controls the entire braking pressure to release pressure to the braking circuit.

[0045] The pressure monitoring unit includes a high-pressure gauge 8 (250 bar) for monitoring the pressure of the accumulator 2 and a low-pressure gauge 7 (4 bar) for monitoring the pressure of the cooling circuit. The high-pressure gauge 8 and the low-pressure gauge 7 are centrally located on the control panel of the integrated housing, which allows for easy observation of various data changes.

[0046] The working principle of the test bench is as follows: all pipe interfaces are connected with quick-connect couplings, minimizing oil leakage, facilitating testing, and improving efficiency. The second ball valve switch 3 can quickly release accumulator pressure when the test stops. The first ball valve switch 9 provides pressure to the brake; during the brake test, the switch closes when the required pressure is reached. The cooling pressure must not exceed 0.7 bar; a 0.5 bar check valve is installed in the flow divider valve assembly 6 to ensure the test pressure. Pressure and flow tests are performed at each test point, and data can be monitored in real time during testing to arrive at test conclusions.

[0047] During testing, the test bench is connected to the pump station via quick-connect coupling 4. The pressure at port R is prioritized by the filling valve assembly 1. After both ball valves are closed, the filling valve assembly 1 fills port B with liquid. The overflow pressure of the throttling valve assembly 5 is 10 bar, and the diversion pressure enters the diversion valve assembly 6. The two 0.5 bar check valves in the diversion valve assembly 6 directly return oil when the pressure is too high, thus protecting the cooling circuit. Excessive pressure in the cooling oil circuit can damage the oil seals. When braking pressure is required, the two ball valves are controlled. When the second ball valve switch 3 opens, the entire oil circuit of the test bench is depressurized, allowing for emergency pressure release.

[0048] This axle testing device features a highly integrated valve assembly with internal rigid pipe connections, resulting in an aesthetically pleasing, clean, and easy-to-maintain appearance. Its versatility allows for testing the cooling and braking systems of various axles. Installation is convenient, saving labor costs and improving efficiency.

[0049] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A test bench device for forced cooling brakes on vehicle axles, characterized in that, include: An integrated housing, and a hydraulic system housed within the integrated housing and connected by rigid pipes; the integrated housing is provided with multiple quick-connect couplings for connecting an oil inlet port, an oil return port, and a vehicle brake test port; The hydraulic system includes a filling valve group, a shut-off valve group, and a diverting valve group connected in sequence according to the oil circuit. The inlet of the filling valve assembly is connected to the pump station via the quick-connect coupling, its priority port is connected to the accumulator, and its working port is connected to the inlet of the shut-off valve assembly; the filling valve assembly is used to provide pressure to the hydraulic system. The oil outlet of the throttling valve assembly is connected to the oil inlet of the diverting valve assembly; The flow divider valve assembly is divided into two passages, and the two output ports are respectively connected to the oil inlets of the front axle and rear axle of the vehicle under test through the quick-connect coupling. The first ball valve switch has one end connected to the accumulator and the other end connected to the brake ports of the front and rear axles of the vehicle to be tested via the quick-connect coupling. The hydraulic system also includes a pressure monitoring unit for monitoring system pressure.

2. The axle forced cooling brake test bench device as described in claim 1, characterized in that, The filling valve assembly integrates a first priority valve and a shut-off valve.

3. The axle forced cooling brake test bench device as described in claim 1, characterized in that, The flow-stopping valve assembly integrates: A second priority valve is used to limit the flow rate to the diversion valve assembly; The relief valve is used to maintain the pressure of the cooling oil. The first flow distribution valve is used to ensure that the flow rates at its two output ends are consistent.

4. The axle forced cooling brake test bench device as described in claim 1, characterized in that, The flow divider valve assembly integrates a second flow distribution valve and two check valves, which supply cooling oil to the front and rear axles respectively, and ensure that the output oil pressure of the two paths is consistent.

5. The test bench device for forced cooling brakes of axles as described in claim 1, characterized in that, The pressure monitoring unit includes a high-pressure gauge for monitoring the pressure of the accumulator and a low-pressure gauge for monitoring the pressure of the cooling circuit. The high-pressure gauge and the low-pressure gauge are centrally located on the central control panel of the integrated housing.

6. The test bench device for forced cooling brakes of axles as described in claim 1, characterized in that, The hydraulic system also includes a second ball valve switch, one end of which is connected to the accumulator and the other end of which is connected to the return port.

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