Fatigue testing device for rubber-tyred loader

Abstract

The utility model provides a fatigue testing device for a rubber-tyred loader, which relates to the field of vehicle testing, and comprises a fixed base, a test bed, a clamping sleeve upper cover, a distribution beam and an actuator, the fixed base is fixed on the test bed, the clamping sleeve upper cover is detachably and fixedly connected with the fixed base, and the distribution beam is fixed on the fixed base. The clamping sleeve and the fixing base define an installation space capable of containing a hub, the hub is arranged in the installation space, and when the clamping sleeve upper cover and the fixing base are fixed in place, the clamping sleeve upper cover and the fixing base can clamp and fix the hub. The actuator is fixed on the test bed, the distribution beam is fixed at the output end of the actuator and detachably fixed on the bucket, and the actuator is used for carrying out fatigue test loading according to a set load spectrum; the clamping sleeve upper cover and the fixing base clamp and fix the hub, circumferential fixation of the hub is achieved, abnormal deformation and displacement of a tire in fatigue loading are replaced, force and displacement of parts such as a frame and a large arm are prevented from being absorbed by the tire, and mechanical analysis and testing of the loading machine are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of vehicle testing equipment technology, and in particular to a fatigue testing device for a tire loader. Background Technology

[0002] In the existing engineering machinery testing technology, fatigue testing is usually carried out on a specific component or part, and the testing methods are not consistent with the condition of the tested part, making it impossible to effectively judge and evaluate the lifespan of the part.

[0003] The applicant has discovered at least the following technical problems with the existing technology: In existing technology, fatigue testing of wheeled loaders generally uses the entire machine, locking the tires with chains or cables. In this method, the locking mechanism is subjected to fatigue loading forces over a long period, making it prone to damage and the process cumbersome. Furthermore, due to differences in test bench conditions, loading methods and capacities, as well as variations in the complexity of the test specimen and the required positioning and fastening methods, a unified and effective fatigue testing approach cannot be implemented. Utility Model Content

[0004] The purpose of this utility model is to provide a fatigue testing device for tire loaders, so as to solve the technical problems of tire loaders being difficult to fix effectively and having low efficiency in fatigue testing in the prior art; the various technical effects of the preferred technical solutions provided by this utility model are described in detail below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The fatigue testing device for tire loaders provided by this utility model includes a fixed base, a test bench, a ferrule cover, a distribution beam, and an actuator, wherein:

[0007] The fixed base is fixed to the test bench, and the upper cover of the ferrule is detachably fixed to the fixed base. The ferrule and the fixed base enclose an installation space that can accommodate the wheel hub. When the wheel hub is placed in the installation space and the upper cover of the ferrule is fixed to the fixed base, the upper cover of the ferrule and the fixed base can clamp and fix the wheel hub.

[0008] The actuator is fixed to the test bench, the distribution beam is fixed to the output end of the actuator and detachably fixed to the bucket, and the actuator is used to perform fatigue test loading according to the set load spectrum.

[0009] Preferably, the fixed base is provided with an arc-shaped groove, the opening of the arc-shaped groove is facing upward, and mounting parts are provided on opposite sides of the arc-shaped groove, the mounting parts being fixed to the upper cover of the sleeve.

[0010] Preferably, the sleeve cover includes an arc-shaped plate and a fixing plate, wherein:

[0011] The fixing plate is fixed to the opposite sides of the arc-shaped plate. When the fixing plate is fixedly connected to the corresponding mounting part, the arc-shaped plate and the arc-shaped groove enclose the mounting space.

[0012] Preferably, the fixing plate is a flat plate structure, and the locking member passes through the fixing plate to detachably and fix it to the mounting part.

[0013] Preferably, there are at least two sets of the fixed base and the sleeve cover, used to fix the two wheel hubs of the tire loader.

[0014] Preferably, the distribution beam includes a transverse beam and a clamping plate, wherein:

[0015] The transverse beam is connected to the output end of the actuator, and the clamping plates are fixed at opposite ends of the transverse beam. The two clamping plates can be located on opposite sides of the bucket to clamp and fix the bucket.

[0016] Preferably, the transverse beam and the clamping plate are integrally formed structures.

[0017] Preferably, the test bench is provided with a mounting groove, the opening of the mounting groove is facing upward, and the mounting groove extends through the opposite sides of the test bench.

[0018] Preferably, the mounting slots are arranged at intervals along the length or width of the test bench.

[0019] Preferably, the fatigue testing device for the tire loader further includes a locking screw and a locking nut;

[0020] The mounting groove includes a vertical section and a horizontal section that are connected, wherein:

[0021] The vertical section extends through the upper surface of the test bench, the horizontal section is located within the test bench, the end of the locking screw is located within the horizontal section, the locking nut is threadedly connected to the locking screw and abuts against the upper surface of the test bench, and the rod of the locking screw passes through the vertical section and abuts against the side of the actuator, thereby clamping and fixing the actuator.

[0022] The tire-type loader fatigue testing device provided by this utility model has the following advantages compared with the prior art: The upper cover of the clamping sleeve is fixed in place with the fixed base, clamping and fixing the wheel hub to achieve circumferential fixation. This replaces the abnormal deformation and displacement of the tire during fatigue loading, preventing the tire from absorbing the force and displacement of components such as the frame and boom. It facilitates vehicle body installation and fixation. The actuator performs fatigue testing loading according to a set load spectrum, applying force to the distribution beam. The distribution beam acts on the bucket, simulating the load distribution when the loader is digging materials, to analyze and study the lifespan of the loader's front frame, boom, and forearm. This tire-type loader fatigue testing device simulates and locks in the loader's ultimate load-bearing state, facilitating the mechanical analysis and testing of the front structural components. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the tire loader fatigue testing device in conjunction with the loader.

[0025] Figure 2 This is a side view of the tire loader fatigue testing device in conjunction with the loader;

[0026] Figure 3 This is a schematic diagram of the fitting structure between the card sleeve and the fixed base.

[0027] In the diagram: 1. Test bench; 2. Fixed base; 21. Arc groove; 22. Mounting part; 3. Sleeve cover; 31. Arc plate; 32. Fixing plate; 4. Distribution beam; 41. Transverse beam; 42. Clamping plate; 5. Actuator; 6. Installation space; 7. Locking element; 8. Mounting groove; 81. Horizontal section; 82. Vertical section; 91. Locking screw; 92. Locking nut; 100. Bucket; 200. Hub. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] This utility model provides a tire-type loader fatigue testing device that achieves circumferential fixation of the wheel hub, which can replace the abnormal deformation and displacement of the tire during fatigue loading, facilitating the mechanical analysis and testing of the front vehicle structural components.

[0032] The following is combined with Figures 1-3 The technical solution provided by this utility model will be described in more detail.

[0033] like Figures 1-3 As shown, the fatigue testing device for a tire loader provided by this utility model includes a fixed base 2, a test bench 1, a clamping sleeve cover 3, a distribution beam 4, and an actuator 5. The fixed base 2 is fixed to the test bench 1. The clamping sleeve cover 3 is detachably fixed to the fixed base 2. The clamping sleeve and the fixed base 2 enclose an installation space 6 that can accommodate a wheel hub 200. The wheel hub 200 is placed within the installation space 6, and when the clamping sleeve cover 3 and the fixed base 2 are in place, the clamping sleeve cover 3 and the fixed base 2 can clamp and fix the wheel hub 200. The actuator 5 is fixed to the test bench 1. The distribution beam 4 is fixed to the output end of the actuator 5 and detachably fixed to the bucket 100. The actuator 5 is used to perform fatigue testing loading according to a set load spectrum.

[0034] Specifically, when fixing the wheel hub 200, the loader's tires are removed, and the wheel hub 200 is fixed within the installation space 6, such as... Figure 1 .

[0035] Actuator 5 is an existing, mature device that converts energy (such as electrical, hydraulic, or pneumatic energy) into mechanical motion or force. Its core function is to receive control signals and execute precise physical actions to regulate or drive system operation. Actuator 5 is a key component for implementing active vibration control, mechanical motion, or load regulation. It is also known as a vibrator, actuator, or solenoid valve, converting electrical or hydraulic energy into mechanical energy to drive load movement. In this embodiment, actuator 5 undergoes fatigue testing according to a set load spectrum. The force is applied to the distribution beam 4, which in turn acts on the bucket 100 to simulate load distribution when the loader is digging material, in order to analyze and study the lifespan of the loader's front frame, boom, and arm.

[0036] The fatigue testing device for tire loaders provided by this utility model has a clamping cover 3 and a fixed base 2 fixed in place. The clamping cover 3 and the fixed base 2 clamp and fix the wheel hub 200, thereby achieving circumferential fixation of the wheel hub 200. This can replace the abnormal deformation and displacement of the tire during fatigue loading, prevent the force and displacement of the frame, boom and other components from being absorbed by the tire, and facilitate the installation and fixation of the vehicle body.

[0037] This tire loader fatigue testing device simulates and locks in the loader's ultimate load-bearing state, facilitating mechanical analysis and testing of the front vehicle's structural components.

[0038] As an optional implementation, see Figure 1 and Figure 3 As shown, the fixed base 2 is provided with an arc-shaped groove 21, the opening of which faces upward. Mounting portions 22 are provided on opposite sides of the arc-shaped groove 21, and the mounting portions 22 are fixed to the sleeve cover 3. The sleeve cover 3 includes an arc-shaped plate 31 and a fixing plate 32, wherein the fixing plate 32 is fixed to opposite sides of the arc-shaped plate 31. When the fixing plate 32 is fixedly connected to the corresponding mounting portion 22, the arc-shaped plate 31 and the arc-shaped groove 21 enclose an installation space 6.

[0039] See Figure 1 and Figure 3 As shown, when the ferrule cover 3 and the fixed base 2 are fixed in place, the arc-shaped groove 21 and the arc-shaped plate 31 cooperate to form an installation space 6. The ferrule cover 3 and the fixed base 2 clamp and fix the wheel hub 200 placed in the installation space 6, thereby fixing the loader. In addition to fixing the wheel hub 200, the test bench 1 has a locking screw 91, which is located on the outer periphery of the loader to restrict the displacement of the loader.

[0040] As an optional implementation, see Figure 3 As shown, the fixing plate 32 is a flat plate structure, and the locking member 7 passes through the fixing plate 32 to detachably and fix it to the mounting part 22. The locking member 7 can be an existing locking member 7 such as a bolt or screw, thereby realizing the detachable and fixed connection between the sleeve cover 3 and the fixing base 2.

[0041] As an optional implementation, see Figure 1 As shown, there are at least two sets of fixed base 2 and clamp cover 3, which are used to fix the two wheel hubs 200 of the wheel loader, thereby improving the fixing effect of the loader.

[0042] The load distribution beam 4 acts on the bucket 100 to simulate the load distribution when the loader is digging material, in order to analyze and study the service life of the loader's front frame, boom, and other components. As an optional implementation, see [link to implementation details]. Figure 1 As shown, the distribution beam 4 includes a transverse beam 41 and a clamping plate 42, wherein: the transverse beam 41 is connected to the output end of the actuator 5, and the clamping plate 42 is fixed at the opposite ends of the transverse beam 41. The two clamping plates 42 can be located on opposite sides of the bucket 100 to clamp and fix the bucket 100.

[0043] In this embodiment, the distribution beam 4 spans the opposite ends of the bucket 100, which can distribute the load when the loader digs materials, thereby facilitating accurate simulation of the load on the bucket 100 during operation and improving test accuracy.

[0044] Specifically, the transverse beam 41 and the clamping plate 42 are integrally formed structures, which improves the stability of the structure.

[0045] As an optional implementation, see Figure 1 and Figure 2 As shown, the test bench 1 is provided with mounting slots 8, the openings of which face upwards, and the mounting slots 8 extend through the opposite sides of the test bench 1. The mounting slots 8 are arranged at intervals along the length or width of the test bench 1.

[0046] The fatigue testing device for tire loaders also includes a locking screw 91 and a locking nut 92; the mounting groove 8 facilitates the installation of locking components 7 such as the locking screw 91, thereby fixing the actuator 5, the loader and the fixed base 2.

[0047] As an optional implementation, see Figure 2 As shown, the mounting groove 8 includes a vertical section 82 and a horizontal section 81 that are connected. The vertical section 82 passes through the upper surface of the test bench 1, the horizontal section 81 is located inside the test bench 1, the end of the locking screw 91 is located inside the horizontal section 81, the locking nut 92 is threadedly connected to the locking screw 91 and abuts against the upper surface of the test bench 1, and the rod of the locking screw 91 passes through the vertical section 82 and abuts against the side of the actuator 5, thereby clamping and fixing the actuator 5.

[0048] The locking screw 91 passes through the vertical section 82 of the mounting groove 8, and the locking nut 92 is threadedly connected to the locking screw 91. The locking nut 92 abuts against the upper surface of the test bench 1 to prevent the locking screw 91 from moving. The above-mentioned mating structure can limit the displacement of the actuator 5 on the test bench 1. In addition, a locking member 7 that passes directly through the base of the actuator 5 can be provided to fix the actuator 5 on the test bench 1.

[0049] The arrangement of the mounting slot 8 on the test bench 1 facilitates the installation of multiple locking screws 91 at the target location, making it convenient to use.

[0050] Test method:

[0051] A loader was selected, and its overall body structure was simplified, retaining only the front half of the body and auxiliary components. The tires were removed, and the loader was mounted on a fatigue testing device using wheel hubs 200. The hydraulic pressure in the hydraulic cylinders of the loader's boom and forearm was set to the overflow pressure during operation as a reference pressure, and the oil circuit ends were sealed to adjust the pressure in the hydraulic cylinders to the reference pressure. The machine mounted on the fatigue testing device was adjusted to the loading position (the illustration shows the forward pressure during digging). The distribution beam 4 at the front end of the bucket 100 was installed to simulate the load distribution when the loader digs materials. A hydraulic actuator 5 was installed at the rear end of the distribution beam 4. The hydraulic actuator 5 applied fatigue test loads according to a pre-set load spectrum through hydraulic output. This was used to analyze and study the lifespan of the loader's front frame, boom, forearm, etc.

[0052] This utility model provides a fatigue testing device for tire-type loaders:

[0053] 1. An installation slot 8 is provided on the test bench 1 to facilitate position adjustment and fixation on the test bench 1. At the same time, according to the needs of loaders of different tonnages, simple tooling can be added to achieve adjustment and adaptation to more machines.

[0054] 2. A circumferential fixing method for the wheel hub 200 was designed. The wheel hub 200 of the loader with the tire removed is circumferentially fixed by the clamp cover 3 and the fixing base 2. The loader with a half frame is used for installation and fatigue testing is carried out.

[0055] 3. The test platform 1 at the bottom of the device facilitates fastening using locking screws 91 or other methods on the platform.

[0056] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A fatigue testing device for a tire loader, characterized in that, Includes a fixed base, test bench, ferrule cover, distribution beam, and actuator, wherein: The fixed base is fixed to the test bench, and the upper cover of the ferrule is detachably fixed to the fixed base. The ferrule and the fixed base enclose an installation space that can accommodate the wheel hub. When the wheel hub is placed in the installation space and the upper cover of the ferrule is fixed to the fixed base, the upper cover of the ferrule and the fixed base can clamp and fix the wheel hub. The actuator is fixed to the test bench, the distribution beam is fixed to the output end of the actuator and detachably fixed to the bucket, and the actuator is used to perform fatigue test loading according to the set load spectrum.

2. The fatigue testing device for a tire loader according to claim 1, characterized in that, The fixed base is provided with an arc-shaped groove with the opening of the arc-shaped groove facing upward. Mounting parts are provided on opposite sides of the arc-shaped groove, and the mounting parts are fixed to the upper cover of the sleeve.

3. The fatigue testing device for a tire loader according to claim 2, characterized in that, The sleeve cover includes an arc-shaped plate and a fixing plate, wherein: The fixing plate is fixed to the opposite sides of the arc-shaped plate. When the fixing plate is fixedly connected to the corresponding mounting part, the arc-shaped plate and the arc-shaped groove enclose the mounting space.

4. The fatigue testing device for a tire loader according to claim 3, characterized in that, The fixing plate is a flat plate structure, and the locking member passes through the fixing plate to detachably and fix it to the mounting part.

5. The fatigue testing device for a tire loader according to claim 1, characterized in that, The number of fixed bases and the number of clip covers are at least two sets, used to fix the two wheel hubs of the tire loader.

6. The fatigue testing device for a tire loader according to claim 1, characterized in that, The distribution beam includes a transverse beam and a clamping plate, wherein: The transverse beam is connected to the output end of the actuator, and the clamping plates are fixed at opposite ends of the transverse beam. The two clamping plates can be located on opposite sides of the bucket to clamp and fix the bucket.

7. The fatigue testing device for a tire loader according to claim 6, characterized in that, The transverse beam and the clamping plate are integrally formed structures.

8. The fatigue testing device for a tire loader according to claim 1, characterized in that, The test bench is provided with a mounting groove, the groove opening is set upwards, and the mounting groove runs through the opposite sides of the test bench.

9. The fatigue testing device for a tire loader according to claim 8, characterized in that, The mounting slots are arranged at intervals along the length or width of the test bench.

10. The fatigue testing device for a tire loader according to claim 8, characterized in that, The fatigue testing device for the tire loader also includes a locking screw and a locking nut; The mounting groove includes a vertical section and a horizontal section that are connected, wherein: The vertical section extends through the upper surface of the test bench, the horizontal section is located within the test bench, the end of the locking screw is located within the horizontal section, the locking nut is threadedly connected to the locking screw and abuts against the upper surface of the test bench, and the rod of the locking screw passes through the vertical section and abuts against the side of the actuator, thereby clamping and fixing the actuator.

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