Frame test bench and working machine

Abstract

The utility model provides a vehicle frame test bench and an operation machine, and the vehicle frame test bench comprises a supporting tool which is used for simulating the real stress and constraint state of the operation condition of a vehicle frame; the frame sample piece is arranged on the supporting tool; the load acquisition module is used for acquiring an actual load road spectrum of a frame working condition; and the loading module is used for loading the frame sample piece based on the load road spectrum. According to the frame test bench and the operation machine provided by the utility model, the support tool simulates the real stress and constraint state of the frame operation condition, and the frame sample piece is arranged on the support tool, so that the installation form of the frame sample piece on the test bench is kept consistent with that of a real vehicle; the loading module loads the frame sample piece based on the load road spectrum collected by the load collection module, loading is achieved according to the stress mode and the load size of the frame of a real vehicle, loading of the load spectrum can be carried out, degradation loading can be carried out according to data collected by the real vehicle, the fatigue durability life of the frame can be verified in an accelerated mode, and the fatigue durability verification period is short.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue testing, in particular to a vehicle frame test bench and an operating machine. Background Art

[0002] With the development of diversified application of operating machinery, the structure of operating machinery tends to be refined, humanized, and convenient for operation and maintenance. For example, taking a mine car as an example, a mine car is a narrow-gauge railway transport vehicle that transports bulk materials such as coal, ore and waste rock in a mine, and generally needs to be towed by a locomotive or winch. Among them, the fatigue life of the mine car frame plays an important role in the normal use of the mine car.

[0003] The vehicle frame test bench in the prior art usually realizes the torsion condition under the condition that the loading end can ensure the complete vertical movement. However, the test condition is single, the load spectrum cannot be loaded, and the fatigue durability verification cycle is long. Utility Model Content

[0004] The utility model provides a vehicle frame test bench and an operating machine, which are used to solve the defect of long fatigue durability verification period of the vehicle frame in the mining area in the prior art, and realize accelerated verification of the fatigue durability life of the vehicle frame.

[0005] The utility model provides a vehicle frame test bench, comprising:

[0006] Support tooling, used to simulate the actual stress and constraint state of the frame working condition;

[0007] A frame sample is arranged on the supporting tooling;

[0008] Load collection module, used to collect the actual load road spectrum of the frame operating conditions;

[0009] A loading module is used to load the frame sample based on the load road spectrum.

[0010] Preferably, according to a vehicle frame test bench provided by the utility model, the loading module comprises:

[0011] A plurality of actuators, used for loading the frame sample based on the load spectrum;

[0012] A multi-channel loading system is connected to the actuators and is used to achieve coordinated loading of the actuators.

[0013] Preferably, according to a vehicle frame test bench provided by the utility model, the supporting tooling comprises:

[0014] A cargo box simulation tooling, used for carrying the frame sample;

[0015] A connecting tool, used to connect the cargo box simulation tool and the frame sample;

[0016] The vehicle body simulation tooling is arranged on the top of the vehicle frame sample.

[0017] Preferably, according to a vehicle frame test bench provided by the utility model, the supporting tooling further includes:

[0018] The spherical support is rotatably connected to the bottom of the cargo box simulation tooling, and the spherical support is used to simulate the degree of freedom of the frame operating conditions.

[0019] Preferably, according to a vehicle frame test bench provided by the utility model, the spherical support is fixedly arranged on a cast iron platform or a site with ground anchor bolts.

[0020] Preferably, according to the vehicle frame test bench provided by the utility model, the constraint state includes a torsion state and / or a bending state.

[0021] Preferably, according to a vehicle frame test bench provided by the utility model, the multi-channel loading system includes a four-channel loading system.

[0022] Preferably, a vehicle frame test bench provided according to the utility model further includes:

[0023] A tooling gantry is used to connect the actuator and the frame sample.

[0024] Preferably, according to a vehicle frame test bench provided by the utility model, the cargo box simulation tooling, the connection tooling and the vehicle body simulation tooling are all made of steel.

[0025] The utility model also provides a working machine, comprising the frame test bench as described in any one of the above items.

[0026] The vehicle frame test bench and operating machinery provided by the utility model simulate the real stress and constraint state of the vehicle frame operating condition through the supporting tooling. The vehicle frame sample is arranged on the supporting tooling, so that the installation form of the vehicle frame sample on the test bench is consistent with that of the actual vehicle. The load acquisition module acquires the actual load road spectrum of the frame operating condition, and the loading module loads the frame sample based on the load road spectrum, realizes loading according to the stress mode and load size of the actual vehicle frame, can load the load spectrum, and has a short fatigue durability verification cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1It is a structural schematic diagram of a vehicle frame test bench in an embodiment provided by the utility model.

[0029] Figure 2 It is a side view of a vehicle frame test bench in one embodiment provided by the utility model.

[0030] Figure 3 It is a top view of a vehicle frame test bench in one embodiment provided by the utility model.

[0031] Reference numerals:

[0032] 1. Frame sample; 2. Cargo box simulation tooling; 3. Connection tooling; 4. Vehicle body simulation tooling; 5. Spherical bearing. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of 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.

[0035] Combine the following Figure 1-Figure 3 A vehicle frame test bench according to an embodiment is described to solve the problem of long fatigue durability verification cycle of the vehicle frame test bench in the prior art.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the utility model provides a vehicle frame test bench, including a supporting tooling, a vehicle frame sample 1, a load collection module and a loading module.

[0037] The support tooling is used to simulate the actual stress and constraint state of the frame operating conditions, that is, to simulate the stress and constraint state of the frame in the actual working environment, and may include multiple adjustable support points to simulate the stress and constraint conditions of the frame under different working conditions.

[0038] The frame sample 1 is set on the supporting tooling to ensure that the frame sample 1 is in a state similar to the actual working environment during the test.

[0039] The load acquisition module is used to collect the actual load spectrum of the frame operation condition, which may include various sensors and data acquisition equipment, and can monitor and record the load data of the frame in real time. These load data are important basis for the subsequent loading module to simulate loading.

[0040] The loading module loads the frame sample based on the load spectrum. By simulating the loading, it can accurately simulate the load conditions in actual work.

[0041] The vehicle frame test bench provided by the utility model supports and fixes a vehicle frame sample 1 through a supporting tooling, the constraint form of the supporting tooling is consistent with that of the actual vehicle, the load acquisition module acquires the actual load road spectrum, and the loading module is connected and coordinated for loading at the wheel center of the vehicle frame based on the actual load road spectrum. After the vehicle frame test bench is calibrated, the force applied to the vehicle frame is consistent with that applied to the actual vehicle in the mining area, and the strain at the sensitive points of the vehicle frame needs to be consistent with that collected from the actual vehicle, or degradation loading can be performed based on the data collected from the actual vehicle to accelerate the verification of the fatigue durability test of the mining vehicle frame.

[0042] In a feasible embodiment of the utility model, the loading module includes an actuator and a multi-channel loading system. The actuator is used to load the frame sample based on the load spectrum. The actuator is a key component for implementing active vibration control. The actuator is the core component of the loading module. It can simulate the load changes under actual working conditions according to the preset load spectrum and dynamically or statically load the frame sample. The multi-channel loading system is connected to the actuator, and the multi-channel loading system will coordinate the loading according to the input load to achieve coordinated loading of the actuator. The multi-channel loading system can ensure that the actuator remains synchronized and coordinated during the loading process, thereby simulating a more realistic and complex load environment. This is crucial for testing the performance of the frame under complex working conditions.

[0043] In a feasible embodiment of the present utility model, the supporting tooling includes a cargo box simulation tooling 2 , a connecting tooling 3 and a vehicle body simulation tooling 4 .

[0044] The cargo box simulation tool 2 is used to carry the frame sample 1. It simulates the support and restraint effect of the cargo box on the frame in an actual vehicle, ensuring that the frame sample 1 is in a state similar to the actual working environment during the test. The cargo box simulation tool 2 may have an adjustable height and angle to accommodate frame samples 1 of different models and specifications. At the same time, it also needs to have sufficient strength and rigidity to withstand the loads generated during the test.

[0045] The connection fixture 3 is used to connect the cargo box simulation fixture 2 and the frame sample 1; it ensures a stable connection between the two to prevent relative displacement or loosening during the test. The connection fixture 3 may be bolted, welded or other reliable connection methods. It also needs to have sufficient strength and rigidity to withstand the loads and vibrations generated during the test.

[0046] The vehicle body simulation tool 4 is set on the top of the frame sample 1 to simulate the constraints and loads of the body on the frame in the actual vehicle. It makes the frame sample 1 closer to the actual working state during the test. The vehicle body simulation tool 4 may include multiple adjustable support points to simulate the constraints and loads of the body on the frame under different working conditions. At the same time, it also needs to have sufficient rigidity and stability to ensure the accuracy of the test results.

[0047] Furthermore, in a feasible embodiment of the present invention, the support fixture further includes a spherical support 5, which is rotatably connected to the bottom of the cargo box simulation fixture 2, and the spherical support 5 is used to simulate the degree of freedom of the frame operating conditions. During the actual operation of the frame, the frame will be subjected to forces and constraints from different directions. The spherical support 5 can simulate such multi-directional forces and constraints through its unique structural design. The spherical support 5 is rotatably connected to the bottom of the cargo box simulation fixture 2, allowing the cargo box simulation fixture 2 to produce a certain rotation and displacement during the test, thereby more realistically simulating the dynamic response of the frame in the actual working environment.

[0048] Specifically, the spherical support 5 is usually composed of two parts, the upper part is the ball head, and the lower part is the base. The ball head can rotate in the base, and this design allows the support to adapt to loads in different directions. Under the action of load, the spherical support 5 can cause the structure to produce a certain displacement, thereby dispersing the load and reducing the deformation and damage of the structure. At the same time, it can also reduce friction and improve the stability and durability of the structure. The spherical support 5 is rotatably connected to the bottom of the cargo box simulation tooling 2 through a specific connection method (such as bolt connection, welding, etc.). This connection method not only ensures the reliability of the connection, but also allows the cargo box simulation tooling 2 to produce necessary rotation and displacement during the test.

[0049] By introducing the spherical support 5 into the supporting fixture, the frame test bench can more accurately simulate the stress and constraint state of the frame in the actual working environment. This helps to improve the accuracy and reliability of the test and provide strong support for the design and optimization of the frame.

[0050] Preferably, in a feasible embodiment of the present invention, according to the actual loading conditions on site, the frame sample 1 is installed upside down, and the spherical support 5 is fixedly set on a cast iron platform or a site with anchor bolts.

[0051] Preferably, in a feasible embodiment of the present invention, the constraint state includes a torsion state and / or a bending state, and the release of the degree of freedom needs to be consistent with that of a real vehicle.

[0052] Preferably, in a feasible embodiment of the utility model, the multi-channel loading system includes a four-channel loading system. As the core component of the frame test bench, the four-channel loading system realizes high-precision, high-reliability and high-efficiency loading testing of the frame sample 1 through its unique structure and functional design. This system can not only simulate complex and changeable actual working conditions, but also improve the accuracy and reliability of the test, providing strong support for the design and optimization of the frame.

[0053] Preferably, in a feasible embodiment of the utility model, a tooling gantry is further included for connecting the actuator and the frame sample. The main function of the tooling gantry is to provide a stable frame for supporting and connecting the actuator and the frame sample. It ensures that during the loading test, the actuator can accurately and stably apply force or displacement to the frame sample.

[0054] The introduction of the tooling gantry makes the loading test process of the frame test bench more stable and reliable. The gantry provides a stable support platform for the actuator, ensuring the accurate transmission of the loading force and the stable testing of the frame sample. At the same time, the tooling gantry also improves the flexibility and adaptability of the test. By adjusting the size of the gantry and the position of the connection point, it can easily adapt to the testing needs of frame samples of different sizes and shapes.

[0055] Preferably, in a feasible embodiment of the present utility model, the cargo box simulation tooling 2, the connecting tooling 3 and the vehicle body simulation tooling 4 are all made of steel material, such as high-quality steel or aluminum alloy.

[0056] A second aspect of the present invention provides a working machine, comprising a frame test bench as described in any one of the above technical solutions.

[0057] The operating machinery provided by the embodiment of the second aspect of the utility model includes the frame test bench as described above. The real stress and constraint state of the frame operating condition is simulated by the supporting tooling. The frame sample is arranged on the supporting tooling to ensure that the installation form of the frame sample on the test bench is consistent with that of the actual vehicle. The load acquisition module acquires the actual load road spectrum of the frame operating condition, and the loading module loads the frame sample based on the load road spectrum. The loading is realized according to the stress mode and load size of the actual vehicle frame, and the load spectrum can be loaded, and the fatigue durability verification cycle is short.

[0058] In the embodiments of the present invention, the type of operating machinery is not limited. For example, the operating machinery may be a mining vehicle or a wide-body vehicle. In other words, as long as the operating machinery can use the vehicle frame test bench in the present invention, it will be fine.

[0059] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A vehicle frame test bench, characterized in that: include: Support tooling, used to simulate the actual stress and constraint state of the frame working condition; A frame sample (1) is arranged on the supporting tooling; Load collection module, used to collect the actual load road spectrum of the frame operating conditions; A loading module is used to load the frame sample based on the load road spectrum.

2. The vehicle frame test bench according to claim 1, characterized in that: The loading module includes: A plurality of actuators, used for loading the frame sample based on the load spectrum; A multi-channel loading system is connected to the actuators and is used to achieve coordinated loading of the actuators.

3. The vehicle frame test bench according to claim 1, characterized in that: The supporting tooling comprises: A cargo box simulation tool (2), used for carrying the vehicle frame sample (1); A connecting tool (3) used for connecting the cargo box simulation tool (2) and the vehicle frame sample (1); The vehicle body simulation tooling (4) is arranged on the top of the vehicle frame sample (1).

4. The vehicle frame test bench according to claim 3, characterized in that: The supporting tooling also includes: The spherical support (5) is rotatably connected to the bottom of the cargo box simulation tooling (2), and the spherical support (5) is used to simulate the degree of freedom of the frame operating condition.

5. The vehicle frame test bench according to claim 4, characterized in that: The spherical support (5) is fixedly arranged on a cast iron platform or a site with ground anchor bolts.

6. The vehicle frame test bench according to claim 1, characterized in that: The constrained state includes a torsion state and / or a bending state.

7. The vehicle frame test bench according to claim 2, characterized in that: The multi-channel loading system includes a four-channel loading system.

8. The vehicle frame test bench according to claim 2, characterized in that: Also includes: A tooling gantry is used to connect the actuator and the frame sample.

9. The vehicle frame test bench according to claim 3, characterized in that: The cargo box simulation tooling (2), the connection tooling (3) and the vehicle body simulation tooling (4) are all made of steel.

10. A working machine, characterized in that: A vehicle frame test bench comprising the frame test bench described in any one of claims 1 to 9.

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