Device for testing fatigue strength of corbel

Abstract

The utility model provides a bracket fatigue strength testing device, which comprises a workbench, a mounting assembly, a loading assembly and a detection assembly, and is characterized in that the mounting assembly is fixed on the workbench and is used for mounting and fixing a bracket, and the loading assembly is used for loading the bracket. The loading assembly is located on the side, away from the mounting assembly, of the workbench, at least one part of the loading assembly is connected with the workbench, the loading assembly can provide continuous impact force for the supporting arm, at least one part of the detection assembly is mounted on the loading assembly, and the detection assembly is used for detecting the impact force of the supporting arm. And the magnitude of the impact force and the deformation quantity of the corbel can be detected. The supporting arm fatigue strength testing device is composed of the installation assembly, the loading assembly and the detection assembly, so that the load borne by the supporting arm can be accurately controlled, meanwhile, the experimental data of deformation can be acquired, and the performance data of the supporting arm can be acquired.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue strength testing, in particular to a support arm fatigue strength testing device. Background Art

[0002] Forklifts are efficient equipment for mechanized loading and unloading, stacking and short-distance transportation. They are a type of industrial vehicle that plays an important role in the logistics system and is widely used in various sectors of the national economy, such as stations, ports, airports, factories, warehouses, etc.

[0003] The fork arm is the most commonly used pickup device for forklifts. The fork arm is used to lift the items and transport them to the designated location. During the transportation process, the fork arm bears the entire weight of the items. Therefore, the fork arm needs to have sufficient strength to ensure safety during the transportation process. It is not difficult to see that testing the fatigue strength of the fork arm is particularly important for safe production.

[0004] Therefore, the prior art lacks a device capable of testing the fatigue strength of the fork support arm. Utility Model Content

[0005] The main purpose of the utility model is to provide a support arm fatigue strength testing device to solve the technical problem in the prior art that the fatigue strength of the fork support arm cannot be tested.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a support arm fatigue strength testing device is provided, comprising a workbench, a mounting assembly, a loading assembly and a detection assembly, wherein the mounting assembly is fixed on the workbench, the mounting assembly is used to install and fix the support arm, the loading assembly is located on a side of the workbench away from the mounting assembly, at least a part of the loading assembly is connected to the workbench, the loading assembly can provide continuous impact force to the support arm, at least a part of the detection assembly is installed on the loading assembly, and can detect the magnitude of the impact force and the deformation of the support arm.

[0007] Furthermore, the detection component includes a pressure sensor and a displacement sensor, and the pressure sensor and the displacement sensor are respectively communicatively connected to a control unit.

[0008] Furthermore, the mounting assembly includes a mounting bracket and a support arm fixing portion, the mounting bracket is fixedly connected to the workbench, the support arm fixing portion is arranged at one end of the mounting bracket away from the workbench, and the support arm fixing portion is provided with a support arm connecting portion for connecting to the support arm.

[0009] Furthermore, the support arm connecting portion includes a first mounting hole and a second mounting hole, the first mounting hole is used to accommodate a first pin, and the second mounting hole is used to accommodate a second pin, wherein the first pin and the second pin are arranged in parallel.

[0010] Furthermore, the loading assembly includes: a lifting bracket, the lifting bracket includes a first telescopic rod, a second telescopic rod and a cross beam, the first telescopic rod and the second telescopic rod are fixed to the workbench, and the cross beam is installed at one end of the first telescopic rod and the second telescopic rod away from the workbench; a cylinder, the cylinder is arranged on the cross beam, the free end of the cylinder is arranged facing the workbench, and the free end of the cylinder can move in a direction approaching or away from the workbench; an impact pin, one end of the impact pin is connected to the free end of the cylinder, and the other end of the impact pin can apply a continuous impact force to the support arm; a fork accommodating chamber, one end of the fork accommodating chamber is connected to the impact pin, and the end of the fork accommodating chamber away from the pin is provided with an opening for the fork to enter and exit.

[0011] Furthermore, the loading assembly also includes a hydraulic workstation, and the hydraulic workstation is connected to the oil inlet and oil outlet pipelines of the oil cylinder.

[0012] Furthermore, the loading assembly further comprises: an electro-hydraulic servo valve, a fluid inlet of the electro-hydraulic servo valve is connected to the hydraulic workstation, and a fluid outlet of the electro-hydraulic servo valve is communicated with an oil inlet of the oil cylinder.

[0013] Furthermore, the support plate is fixedly connected to the workbench, the support plate is vertically arranged on the workbench, the support frame is arranged on the upper part of the support plate, and the support frame is located on a side of the support plate close to the loading assembly.

[0014] Furthermore, the mounting bracket also includes a reinforcement plate.

[0015] By using the support arm fatigue strength testing device provided by the utility model, one end of the support arm is fixedly installed on a workbench through an installation component, thereby simulating the working state of the support arm; by arranging a loading component on a side of the workbench away from the installation component, and providing a continuous impact force to the end of the support arm away from the installation component, thereby simulating the impact of the goods on the support arm; the size of the impact force and the deformation amount of the support arm are detected and recorded through the detection component; through the support arm fatigue strength testing device composed of the installation component, the loading component and the detection component, the load borne by the support arm can be accurately controlled, and at the same time, the experimental data collection of the deformation amount can be obtained to obtain the performance data of the support arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a support arm fatigue strength testing device according to the utility model is shown;

[0018] Figure 2 A structural schematic diagram of the support arm fatigue strength testing device according to the utility model from another perspective is shown;

[0019] Figure 3 A top view of a support arm fatigue strength testing device according to the utility model is shown;

[0020] Figure 4 A side view of a support arm fatigue strength testing device according to the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Workbench; 20. Mounting assembly; 21. Mounting bracket; 211. Bracket plate; 212. Support frame; 213: Support arm ear plate; 214. Reinforcement plate; 22. Support arm fixing part; 30. Loading assembly; 31. Lifting bracket; 32. Cylinder; 33. Impact pin; 34. Fork accommodating chamber; 35. Hydraulic workstation. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0026] In order to solve the technical problem in the prior art that the fatigue strength of a fork support arm cannot be tested, the utility model provides a support arm fatigue strength testing device.

[0027] like Figures 1 to 4As shown, the support arm fatigue strength testing device provided by the utility model includes a workbench 10, a mounting assembly 20, a loading assembly 30 and a detection assembly, wherein the mounting assembly 20 is fixed on the workbench 10, and the mounting assembly 20 is used to install and fix the support arm, and one end of the support arm can be fixedly mounted on the workbench 10 through the mounting assembly 20, so as to simulate the working state of the support arm; the loading assembly 30 is located on the side of the workbench 10 away from the mounting assembly 20, and at least a part of the loading assembly 30 is connected to the workbench 10, and the loading assembly 30 can provide continuous impact force to the end of the support arm away from the mounting assembly 20, so as to simulate the impact of the cargo on the support arm; at least a part of the detection assembly is installed on the loading assembly 30, and can detect the magnitude of the impact force and the deformation of the support arm, so as to accurately analyze the fatigue strength of the support arm.

[0028] By using the support arm fatigue strength testing device provided by the utility model, one end of the support arm is fixedly installed on the workbench 10 through the installation component 20, so as to simulate the working state of the support arm; by arranging the loading component 30 on the side of the workbench 10 away from the installation component 20, and providing a continuous impact force to the end of the support arm away from the installation component 20, the impact of the goods on the support arm is simulated; the size of the impact force and the deformation amount of the support arm are detected and recorded by the detection component; through the support arm fatigue strength testing device composed of the installation component 20, the loading component 30 and the detection component, the load borne by the support arm can be accurately controlled, and at the same time, the experimental data collection of the deformation amount can be obtained to obtain the performance data of the support arm.

[0029] Specifically, the detection component includes a pressure sensor and a displacement sensor, and the pressure sensor and the displacement sensor are respectively connected to a control unit for communication; the control unit can obtain the loading state and deformation of the loading unit in real time, and can perform protection detection in time during the detection process.

[0030] In this embodiment, as shown in the figure, the mounting assembly 20 includes a mounting bracket 21 and a support arm fixing portion 22, the mounting bracket 21 is fixedly connected to the workbench 10, the support arm fixing portion 22 is arranged at an end of the mounting bracket 21 away from the workbench 10, and the support arm fixing portion 22 is provided with a support arm connecting portion for connecting with the support arm, wherein the support arm connecting portion can be set to two, so that fatigue testing can be performed on a single support arm or the entire fork as needed.

[0031] Specifically, as shown in the figure, the mounting bracket 21 includes a bracket plate 211, a support frame 212 and a support arm ear plate 213, wherein the bracket plate 211 is fixedly connected to the workbench 10, the bracket plate 211 is vertically arranged on the workbench 10, the support frame 212 is arranged on the upper part of the bracket plate 211, and the support frame 212 is located on the side of the bracket plate 211 close to the loading assembly 30. Preferably, the support frame 212 can adopt a square frame structure to simulate the installation environment of the fork. The support arm ear plate 213 is fixed on the side of the support frame 212 close to the loading assembly 30, wherein the support arm ear plate 213 can be fixed on the support frame 212 by welding, and a plurality of support arm ear plates 213 can be provided to meet the installation requirements of the support arm.

[0032] In order to ensure the installation strength of the bracket plate 211, the mounting bracket 21 may further include a reinforcing plate 214. The reinforcing plate 214 may be arranged at different positions, for example, between the bracket plate 211 and the workbench 10, or arranged on the side of the bracket plate 211 away from the loading assembly 30. By setting the reinforcing plate 214, the strength requirement of the bracket plate 211 supporting the forklift arm during the test can be met.

[0033] In this embodiment, the support arm connecting portion includes a first mounting hole and a second mounting hole, the first mounting hole is used to accommodate a first pin, and the second mounting hole is used to accommodate a second pin, wherein the first pin and the second pin are arranged in parallel, the first mounting hole and the second mounting hole are arranged in pairs, and the first mounting hole and the second mounting hole are respectively arranged on different support arm ear plates 213, and the fork support arm is fixed by the first pin and the second pin.

[0034] Further, the loading assembly 30 includes a lifting bracket 31, a cylinder 32, an impact pin 33 and a fork accommodating chamber 34, wherein the lifting bracket 31 includes a first telescopic rod, a second telescopic rod and a crossbeam, the first telescopic rod and the second telescopic rod are fixed to the workbench 10, and the crossbeam is installed at one end of the first telescopic rod and the second telescopic rod away from the workbench 10; the cylinder 32 is arranged on the crossbeam, and the free end of the cylinder 32 is arranged facing the workbench 10, and the free end of the cylinder 32 can move in a direction close to or away from the workbench 10; one end of the impact pin 33 is connected to the free end of the cylinder 32, and the other end of the impact pin 33 can apply a continuous impact force to the support arm; one end of the fork accommodating chamber 34 is connected to the impact pin 33, and the end of the fork accommodating chamber 34 away from the pin is provided with an opening for the fork to enter and exit. The loading assembly 30 can simulate the impact strength of the fork support arm in the working state, and the durability performance of the support arm can also be obtained through fatigue testing.

[0035] In order to facilitate the polarity control of the recording component, the loading component 30 also includes a hydraulic workstation 35, which is connected to the oil inlet and outlet pipelines of the cylinder 32. The pressure of the cylinder 32 can be adjusted through the hydraulic workstation 35, thereby adjusting the impact force applied to the support arm.

[0036] Furthermore, the loading assembly 30 also includes an electro-hydraulic servo valve, a fluid inlet of the electro-hydraulic servo valve is connected to the hydraulic workstation 35, and a fluid outlet of the electro-hydraulic servo valve is connected to the oil inlet of the cylinder 32. Through the electro-hydraulic servo valve, the external output of the hydraulic workstation 35 can be accurately controlled, thereby controlling the output oil pressure of the cylinder 32, and further accurately controlling the impact force applied to the support arm.

[0037] During the fatigue strength test of the support arm, the impact force applied to the support arm can be controlled by controlling the electro-hydraulic servo valve. During the overload test, when the loading force exceeds 3% of the preset maximum loading force, the oil pump can be controlled to perform overload protection to avoid damage to the support arm or the test device. The support arm fatigue strength test device provided by the utility model can change the magnitude of the impact force applied to the support arm in real time, has more flexible operation, stronger applicability, and ensures the stability of the equipment.

[0038] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0039] 1. Effectively solve the technical problem that the fatigue strength of the fork support arm cannot be tested in the prior art;

[0040] 2. Easy to install, simple to operate and highly applicable.

[0041] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A support arm fatigue strength testing device, characterized in that: The invention comprises a workbench (10), a mounting assembly (20), a loading assembly (30) and a detection assembly, wherein the mounting assembly (20) is fixed on the workbench (10), the mounting assembly (20) is used to mount and fix the support arm, the loading assembly (30) is located on a side of the workbench (10) away from the mounting assembly (20), at least a part of the loading assembly (30) is connected to the workbench (10), the loading assembly (30) can provide a continuous impact force to the support arm, and at least a part of the detection assembly is mounted on the loading assembly (30) and can detect the magnitude of the impact force and the deformation of the support arm.

2. The support arm fatigue strength testing device according to claim 1, characterized in that: The detection component includes a pressure sensor and a displacement sensor, and the pressure sensor and the displacement sensor are respectively connected to a control unit for communication.

3. The support arm fatigue strength testing device according to claim 1, characterized in that: The mounting assembly (20) comprises a mounting bracket (21) and a support arm fixing portion (22); the mounting bracket (21) is fixedly connected to the workbench (10); the support arm fixing portion (22) is arranged at one end of the mounting bracket (21) away from the workbench (10); and the support arm fixing portion (22) is provided with a support arm connecting portion for connecting to the support arm.

4. The support arm fatigue strength testing device according to claim 3, characterized in that: The support arm connecting portion includes a first mounting hole and a second mounting hole, wherein the first mounting hole is used to accommodate a first pin shaft, and the second mounting hole is used to accommodate a second pin shaft, wherein the first pin shaft and the second pin shaft are arranged in parallel.

5. The support arm fatigue strength testing device according to any one of claims 1 to 4, characterized in that: The loading component (30) comprises: A lifting bracket (31), the lifting bracket (31) comprising a first telescopic rod, a second telescopic rod and a crossbeam, the first telescopic rod and the second telescopic rod being fixed to the workbench (10), and the crossbeam being installed at one end of the first telescopic rod and the second telescopic rod away from the workbench (10); an oil cylinder (32), wherein the oil cylinder (32) is arranged on the crossbeam, the free end of the oil cylinder (32) is arranged facing the workbench (10), and the free end of the oil cylinder (32) can move in a direction approaching or moving away from the workbench (10); An impact pin (33), one end of which is connected to the free end of the oil cylinder (32), and the other end of which is capable of applying a continuous impact force to the support arm; A fork accommodating chamber (34), one end of which is connected to the impact pin shaft (33), and an opening for the fork to enter and exit is provided at one end of the fork accommodating chamber (34) away from the pin shaft.

6. The support arm fatigue strength testing device according to claim 5, characterized in that: The loading assembly (30) further comprises a hydraulic workstation (35), wherein the hydraulic workstation (35) is in communication with the oil inlet and oil outlet pipelines of the oil cylinder (32).

7. The support arm fatigue strength testing device according to claim 6, characterized in that: The loading component (30) further comprises: An electro-hydraulic servo valve, wherein the fluid inlet of the electro-hydraulic servo valve is connected to the hydraulic workstation (35), and the fluid outlet of the electro-hydraulic servo valve is communicated with the fluid inlet of the oil cylinder (32).

8. The support arm fatigue strength testing device according to claim 3, characterized in that: The mounting bracket (21) comprises a bracket plate (211), a support frame (212) and a support arm ear plate (213), wherein the bracket plate (211) is fixedly connected to the workbench (10), the bracket plate (211) is vertically arranged on the workbench (10), the support frame (212) is arranged on the upper part of the bracket plate (211), and the support frame (212) is located on a side of the bracket plate (211) close to the loading assembly (30).

9. The support arm fatigue strength testing device according to claim 8, characterized in that: The mounting bracket (21) further comprises a reinforcing plate (214).

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