Durability test board for hydraulic walking system

Abstract

The utility model relates to a hydraulic walking system endurance test bench, comprising a pedestal which is provided with a pair of supporting seats, namely a first supporting seat and a second supporting seat; a first fixing part of the first reduction gear box is fixedly connected with the first supporting seat; the second reduction gear box is fixedly connected with the second supporting seat; one end of the steel wheel is fixedly connected with the first rotating part of the first reduction gear box, and the other end of the steel wheel is fixedly connected with the second rotating part of the second reduction gear box; the hydraulic motor is connected with the hydraulic power station, and an output shaft of the hydraulic motor is connected with the first rotating part so as to drive the first rotating part, the steel wheel and the second rotating part to rotate synchronously; and the dynamometer is connected and fixed with the second rotating part through a coupler. The hydraulic walking system does not need to be installed on a vehicle for testing, the testing cost is reduced, and the testing efficiency of the hydraulic walking system is improved.

Description

Technical Field

[0001] The utility model relates to the field of testing equipment, in particular to a hydraulic travel system durability testing platform. Background Art

[0002] The hydraulic travel system is a system that uses the hydraulic principle to achieve mechanical movement. It is mainly composed of a hydraulic pump, a hydraulic motor, a reducer, a steel wheel, and a fuel tank. The hydraulic travel system is widely used in various construction machinery, such as excavators, loaders, bulldozers, etc.

[0003] In the past, there was a lack of testing for the hydraulic travel systems used on vehicles. After the hydraulic travel system was installed on the vehicle, it was tested by running on the ground, passing through flat and sloped roads, and driving the vehicle for tens of thousands of kilometers before the reliability and durability of the travel system could be obtained.

[0004] In the past, testing the hydraulic travel system by driving the vehicle required a lot of manpower and time to track, resulting in low efficiency in testing the hydraulic travel system. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, provide a hydraulic travel system durability test bench, and solve the problem of low test efficiency of the hydraulic travel system in the past.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] Provide a hydraulic travel system durability test bench, including

[0008] A base, wherein a pair of support bases are arranged on the base, namely a first support base and a second support base;

[0009] A first reduction gear box, wherein a first fixing portion is fixedly connected to a first supporting seat;

[0010] A second reduction gearbox, the second fixing portion of which is fixedly connected to the second support seat;

[0011] A steel wheel, one end of which is connected and fixed to the first rotating part of the first reduction gear box, and the other end of which is connected and fixed to the second rotating part of the second reduction gear box;

[0012] A hydraulic motor, wherein the hydraulic motor is connected to the hydraulic power station, and an output shaft of the hydraulic motor is connected to the first rotating part to drive the first rotating part, the steel wheel and the second rotating part to rotate synchronously;

[0013] A dynamometer is fixedly connected to the second rotating part via a coupling.

[0014] Furthermore, the hydraulic power station comprises

[0015] Engine, fuel tank, hydraulic pump, fuel inlet pipe and fuel outlet pipe;

[0016] The oil inlet and oil return port of the hydraulic motor are connected to the oil tank via an oil inlet pipe and an oil outlet pipe respectively, and the hydraulic pump is arranged on the oil inlet pipe.

[0017] Furthermore, a circular mounting hole is provided on the support seat, and the fixing portion of the reduction gear box passes through the circular mounting hole;

[0018] A plurality of locking bolts pass through the support seat and are locked with the axial threads of the fixing part.

[0019] Furthermore, the first reduction gearbox and the second reduction gearbox both adopt planetary reducers.

[0020] The beneficial effects of the utility model are:

[0021] The hydraulic travel system durability test bench of the utility model provides resistance to the rotation of the steel wheel in the hydraulic travel system through the dynamometer, so that the hydraulic travel system can be directly tested for durability through the test bench without installing the hydraulic travel system on the vehicle for testing, thereby reducing the testing cost and improving the testing efficiency of the hydraulic travel system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of a durability test bench for a hydraulic travel system of the utility model;

[0024] Figure 2 This is a schematic diagram of the hydraulic travel system durability test bench (without dynamometer and steel wheel) of the utility model;

[0025] in,

[0026] 11. a first support seat, 12. a second support seat;

[0027] 21. a first reduction gear box, 22. a second reduction gear box;

[0028] 3. Steel wheel;

[0029] 4. Hydraulic motor, 5. Dynamometer, 51. Coupling. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.

[0031] The present application provides a hydraulic walking system durability test bench, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0032] In order to solve the problem of low test efficiency of hydraulic travel system in the prior art, an embodiment of the present application provides a hydraulic travel system durability test bench, which is described in detail below.

[0033] like Figure 1 Figure 2 As shown, a hydraulic travel system durability test bench includes

[0034] A base, wherein a pair of support seats are arranged on the base, namely a first support seat 11 and a second support seat 12;

[0035] A first reduction gear box 21, a first fixing portion of which is fixedly connected to the first support seat 11;

[0036] A second reduction gear box 22, the second portion of which is fixedly connected to the second support base 12;

[0037] The steel wheel 3 has one end connected and fixed to the first rotating part of the first reduction gear box 21, and the other end connected and fixed to the second rotating part of the second reduction gear box 22;

[0038] A hydraulic motor 4, wherein the hydraulic motor 4 is connected to the hydraulic power station, and an output shaft of the hydraulic motor 4 is connected to the first rotating part to drive the first rotating part, the steel wheel 3 and the second rotating part to rotate synchronously;

[0039] The dynamometer 5 is connected and fixed to the second rotating part via a coupling 51 .

[0040] Specifically, as an optional implementation in this embodiment, the hydraulic power station includes an engine, a fuel tank, a hydraulic pump, an oil inlet pipe and an oil outlet pipe;

[0041] The oil inlet and oil return port of the hydraulic motor 4 are connected to the oil tank via an oil inlet pipe and an oil outlet pipe respectively, and the hydraulic pump is arranged on the oil inlet pipe.

[0042] The hydraulic power station, the first reduction gearbox 21 and the steel wheel 3 constitute a hydraulic travel system. The durability test of this system includes durability testing of parameters such as the hydraulic pump, the hydraulic motor 4 and the sealing of the oil pipe.

[0043] In this embodiment, the steel wheel 3 includes a cylinder and left and right end plates, and the end plates are respectively fixedly connected to the rotating part of the reduction gear box.

[0044] Specifically, as an optional implementation in this embodiment, Figure 2 As shown, a circular mounting hole is provided on the support seat, and the fixing part of the reduction gear box passes through the circular mounting hole;

[0045] A plurality of locking bolts pass through the support seat and are locked with the axial threads of the fixing part.

[0046] In this embodiment, both the first reduction gearbox and the second reduction gearbox are planetary reducers.

[0047] The completed hydraulic traveling system includes a hydraulic power station, a hydraulic motor 4, a first reduction gear box 21 and a steel wheel 3. The components of the above hydraulic traveling system are installed on the vehicle. The hydraulic power station provides a power source for the hydraulic motor 4. The hydraulic motor 4 drives the steel wheel 3 to rotate through the first reduction gear box 21, and the steel wheel 3 drives the vehicle to move.

[0048] For the test of the hydraulic travel system, this embodiment provides a special test bench, including a base, a coupling 51, a second reduction gear box 22 and a dynamometer 5. The two ends of the steel wheel 3 are respectively installed on the base through the first gear box and the second gear box. The hydraulic power station provides power for the rotation of the steel wheel 3 through the hydraulic motor 4. The two ends of the steel wheel 3 rotate through the rotating part in the reduction gear box. The dynamometer 5 provides a load for the rotation of the steel wheel 3 to simulate the environment when the steel wheel 3 is used on the vehicle, so as to test the durability of the entire hydraulic travel system. The load of the dynamometer 5 can be adjusted in real time, and the test of the hydraulic travel system is more convenient and more comprehensive.

[0049] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0050] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0053] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0054] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0055] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A hydraulic travel system durability test bench, characterized in that: include A base, wherein a pair of support bases are arranged on the base, namely a first support base and a second support base; A first reduction gear box, wherein a first fixing portion is fixedly connected to a first supporting seat; A second reduction gearbox, the second fixing portion of which is fixedly connected to the second support seat; A steel wheel, one end of which is connected and fixed to the first rotating part of the first reduction gear box, and the other end of which is connected and fixed to the second rotating part of the second reduction gear box; A hydraulic motor, wherein the hydraulic motor is connected to the hydraulic power station, and an output shaft of the hydraulic motor is connected to the first rotating part to drive the first rotating part, the steel wheel and the second rotating part to rotate synchronously; A dynamometer is fixedly connected to the second rotating part via a coupling.

2. The hydraulic travel system durability test bench according to claim 1 is characterized in that: The hydraulic power station comprises Engine, fuel tank, hydraulic pump, fuel inlet pipe and fuel outlet pipe; The oil inlet and oil return port of the hydraulic motor are connected to the oil tank via an oil inlet pipe and an oil outlet pipe respectively, and the hydraulic pump is arranged on the oil inlet pipe.

3. The hydraulic travel system durability test bench according to claim 1 is characterized in that: A circular mounting hole is provided on the support seat, and the fixing part of the reduction gear box passes through the circular mounting hole; A plurality of locking bolts pass through the support seat and are locked with the axial threads of the fixing part.

4. The hydraulic travel system durability test bench according to claim 1 is characterized in that: The first reduction gearbox and the second reduction gearbox both adopt planetary reducers.

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