Insulated arm section bending and torsion test device and method for hot-line work vehicle

Abstract

The invention discloses an insulation arm section bending and torsion test device and method for a hot-line work vehicle, and belongs to the technical field of performance testing of insulation materials, the insulation arm section bending and torsion test device comprises a fixing assembly and a test assembly connected with the fixing assembly and arranged in the same horizontal plane, one end of a to-be-tested insulation arm section is connected with the fixing assembly, and the other end of the to-be-tested insulation arm section is connected with the test assembly. The other end is connected with the test assembly through a torsion auxiliary member or a bending auxiliary member; during a torsion test, the to-be-tested insulating arm section and the test assembly are connected through the torsion auxiliary member. During a bending test, the to-be-tested insulating arm section and the test assembly are connected through the bending auxiliary member. The bending test and the torsion test of the insulating arm section are combined into the same test device, and the test of two performances can be realized only by changing the position of the connecting piece, so that the occupied area of the test tool can be saved, and the workload of testers can be reduced. The device is simple in structure and reasonable in design, and a test task can be easily completed without cooperative operation of multiple persons.

Description

Technical Field

[0001] The invention belongs to the technical field of performance testing of insulating materials, and in particular relates to a bending and torsion testing device and method for insulating arm segments of a live working vehicle. Background Art

[0002] In today's society, with the rapid development of the power industry and the continuous expansion of the power grid, live working has become an important means to ensure the stable operation of the power system, improve power supply reliability and reduce power outages. Live working vehicles, as the core equipment in this field, can maintain, inspect and replace power equipment without power outages, greatly improving the efficiency and safety of power operations with their unique technical advantages. With the continuous advancement of technology and the growing demand, live working vehicles are not only used in conventional power maintenance, but also show great application potential in emergency repairs, special environment operations, etc. However, to achieve the full localization of live working vehicles and enhance the independent research and development and manufacturing capabilities of their core components is one of the important challenges facing the current power industry.

[0003] In recent years, domestic and foreign scholars and enterprises have conducted a lot of research and development work on the key component of the insulating arm section for live working vehicles. As a key structure connecting the working platform and the vehicle body, the insulating arm section must not only withstand various mechanical loads during the operation, but also have good insulation performance to ensure the safety of the operators. At present, although the material selection and structural design of the insulating arm section have formed a relatively mature theoretical system and technical specifications, there is a lack of reliable testing technology methods.

[0004] Therefore, designing a bending and torsion test device that can fully simulate the actual operating conditions of the insulating arm of a live working vehicle and is simple, efficient and easy to operate is of great significance for promoting the localization process of the insulating arm segment and improving the overall performance of the live working vehicle. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a bending and torsion test device and method for insulating arm segments of live working vehicles, so as to solve the problem of how to design a bending and torsion test device that can fully simulate the actual working conditions of the insulating arm of a live working vehicle and is easy and efficient to operate, so as to overcome the existing technical problem that the mechanical properties of the insulating arm segments in actual work cannot be fully and accurately evaluated.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The invention discloses an insulating arm segment bending and torsion testing device for a live working vehicle, comprising: a fixing assembly, and a testing assembly connected to the fixing assembly and arranged in the same horizontal plane, wherein one end of the insulating arm segment to be tested is connected to the fixing assembly, and the other end is connected to the testing assembly via a torsion auxiliary component or a bending auxiliary component; During the torsion test, the insulating arm section to be tested and the test assembly are connected via the torsion auxiliary component; During the bending test, the insulating arm section to be tested and the test assembly are connected via a bending auxiliary piece.

[0007] Preferably, the fixing assembly includes a fixing member and a long rod connecting member connected to the fixing member.

[0008] Further preferably, the long rod connecting piece and the fixing piece are connected by welding.

[0009] Further preferably, the length of the long rod connecting member is greater than the length of the insulating arm segment to be measured.

[0010] Further preferably, the long rod connecting piece is connected to the test assembly via a bending and torsion fixing piece; the bending and torsion fixing piece is movably sleeved on the long rod connecting piece.

[0011] More preferably, a plurality of holes for fixing the bending and torsion fixing members are provided on the surface of the long rod connecting member; and a supporting foot is provided at the bottom of the long rod connecting member.

[0012] Further preferably, the test assembly comprises a hydraulic cylinder and a dynamometer connected to the hydraulic cylinder; one end of the hydraulic cylinder is connected to the bending and torsion fixing member, and the other end is connected to the torsion auxiliary member or the bending auxiliary member.

[0013] Preferably, the fixing member is a rectangular parallelepiped with a hollow structure, which is assembled by plates on all sides, and a hole structure for fixing the insulating arm segment to be tested is provided on the surface of the plate.

[0014] Preferably, the torsion auxiliary component is sleeved in the insulating arm section to be tested; and the bending auxiliary component is connected to the insulating arm section to be tested in a combined manner.

[0015] The present invention also discloses a method for using the above-mentioned insulating arm segment bending and torsion testing device for live working vehicles, comprising the following steps: When performing a bending test, first assemble and fix one end of the insulating arm segment to be tested with the fixing component, install a bending auxiliary component on the other end, connect the insulating arm segment to be tested and the test component through the bending auxiliary component, connect the other end of the test component to the fixing component, start the test component, apply bending force, and record the change in force value; When conducting a torsion test, first assemble and fix one end of the insulating arm segment to be tested to the fixed component, connect the other end to the torsion auxiliary part, connect the insulating arm segment to be tested and the test component through the torsion auxiliary part, connect the other end of the test component to the fixed component, start the test component, apply torsional force, and record the change in force value.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The insulating arm segment bending and torsion test device for an insulating bucket arm vehicle disclosed in the present invention realizes efficient and comprehensive testing of the insulating arm segment to be tested through the ingenious combination of a fixing component and a test component, as well as the flexible application of a torsion auxiliary component and a bending auxiliary component. The bending test and torsion test of the insulating arm segment are combined into the same test device, and the test of two performances can be achieved by only changing the position of the connecting component, which can not only save the floor space of the test tooling, but also reduce the workload of the tester. Since the bending and torsion tests can be completed on the same device, the tester does not need to frequently switch between different devices, thereby greatly reducing the workload and improving the test efficiency. This design not only saves labor costs, but also makes the test process smoother and more coherent, which helps to improve the overall test quality. The device of the present invention has a simple structure and a reasonable design, and can easily complete the test task without the need for multiple people to work together. This concise and clear operation method not only reduces the difficulty of operation, but also improves the reliability and accuracy of the test. The tester can focus more on the test itself without being distracted by complex equipment operation or maintenance, thereby ensuring the accuracy and credibility of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the insulating arm segment bending and torsion testing device for live working vehicles disclosed in the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the fixing member disclosed in the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the long rod connecting piece disclosed in the present invention; Figure 4 It is a front view of the insulating arm segment bending and torsion testing device for live working vehicles disclosed in the present invention; Figure 5 The invention discloses a top view of the insulating arm segment bending and torsion testing device for live working vehicles.

[0018] Among them: 1. Fixing parts; 2. Long rod connecting parts; 3. Bending and torsion fixing parts; 4. Hydraulic cylinder; 5. Tension gauge; 6. Torsion auxiliary parts; 7. Bending auxiliary parts; 8. Insulating arm section to be tested. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention 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 data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 1 It is a schematic diagram of the three-dimensional structure of the insulating arm segment bending and torsion testing device for live working vehicles disclosed in the present invention; Figure 4 It is a front view of the insulating arm segment bending and torsion testing device for live working vehicles disclosed in the present invention; Figure 5It is a top view of the insulating arm segment bending and torsion test device for live working vehicles disclosed in the present invention; it can be seen from the figure that in order to restore the working conditions of the insulating arm segment for live working vehicles, the insulating arm segment bending and torsion test device for the insulating bucket arm vehicle includes: a fixing part 1, a long rod connecting part 2, a bending and torsion fixing part 3, a hydraulic cylinder 4, a tensile gauge 5, a torsion auxiliary part 6, a bending auxiliary part 7, and an insulating arm segment 8 to be tested. The fixing assembly composed of the fixing part 1 and the long rod connecting part 2, and the bending and torsion fixing part 3 sleeved on the surface of the long rod connecting part 2, the hydraulic cylinder 4 connected to the bending and torsion fixing part 3 and arranged in the same horizontal plane, and the insulating arm segment 8 to be tested is placed on the fixing part 1. The fixing part 1 is used to fix the insulating arm segment 8 to be tested, and is connected to the long rod connecting part 2 by welding. The length of the long rod connecting part 2 exceeds the length of the insulating arm segment 8 to be tested, and the surface of the long rod connecting part 2 is provided with holes to facilitate the fixing of the bending and torsion fixing part 3. The bending auxiliary part 7 is connected to the insulating arm segment 8 to be tested by combination. The torsion auxiliary part 6 is sleeved on the insulating arm section 8 to be tested. The bending and torsion fixing part 3 is sleeved on the long rod connecting part 2, and its position can be moved according to the test conditions. The test equipment is composed of a hydraulic cylinder 4 and a dynamometer 5, etc. The composition of the insulating arm section bending and torsion test device for live working vehicles is simple, the device is clear, and the assembly method is simple and clear. The entire test device is set in a plane, which is convenient for assembly. There is no need to climb to fix the sample, which is convenient for the test personnel to install the test device. By replacing different test auxiliary devices, bending tests and torsion tests can be completed on the same set of equipment, realizing functional simplification.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixing member disclosed in the present invention; as can be seen from the figure, the fixing member 1 is assembled from plates on all sides, and the surface of the plates has a hole structure, which is for facilitating better fixing of the insulating arm segment 8 to be tested.

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the long rod connecting member disclosed in the present invention; as can be seen from the figure, the long rod connecting member 2 is assembled by welding the plates, and has a supporting foot at the bottom to support the entire long rod connecting member 2.

[0024] The present invention can satisfy the bending test and torsion test of the sample to be tested by replacing different test auxiliary parts. When the bending performance test of the sample to be tested is carried out, the bending auxiliary part 7 is connected to the insulating arm section 8 to be tested in a combined manner, and the two ends of the hydraulic cylinder 4 are respectively connected to the bending auxiliary part 7 and the long rod connecting part 2, and the hydraulic cylinder 4 is connected to the dynamometer 5 to record the bending test force value. When the torsion performance test of the sample to be tested is carried out, the bending torsion fixing part 3 is installed on the long rod connecting part 2, and the torsion auxiliary part 6 is installed on the insulating arm section 8 to be tested. The two ends of the hydraulic cylinder 4 are respectively connected to the bending torsion fixing part 3 and the torsion auxiliary part 6, and the hydraulic cylinder 4 is connected to the dynamometer 5 to change the torsion test force value.

[0025] The present invention discloses a method for using an insulating arm segment bending and torsion testing device for an insulating bucket arm vehicle, comprising the following steps: 1) Before performing the bending and torsion tests, check that the connection between the dynamometer 5 and the hydraulic cylinder 4 is intact; 2) Assemble and fix the insulating arm section 8 to be tested and the fixing member 1; 3) When performing the bending test, the bending auxiliary member 7 is connected to the insulating arm section 8 to be tested in a combined manner; 4) The two ends of the testing device composed of the hydraulic cylinder 4 and the dynamometer 5 are respectively connected to the bending auxiliary part 7 and the bending torsion fixing part 3 fixed on the long rod connecting part 2; 5) When performing a torsion test, the torsion auxiliary member 6 is connected to the insulating arm segment 8 to be tested in a combined manner; 6) The two ends of the test device composed of the hydraulic cylinder 4 and the dynamometer 5 are respectively connected to the torsion auxiliary part 6 and the bending torsion fixing part 3 fixed on the long rod connecting part 2.

[0026] The working principle of the insulated arm segment bending and torsion testing device for an insulated boom truck disclosed in the present invention includes: the bending test is a test for determining the mechanical properties of a material when it is subjected to a bending load, and is one of the basic methods for testing the mechanical properties of materials. When performing the bending test, one side of the insulating arm segment 8 to be tested is unidirectionally stretched, and the other side is unidirectionally compressed. The maximum positive stress appears on the surface of the sample, and the safety factor of the insulating arm segment is judged by testing the bending performance of the insulating arm segment 8. The torsion test is a test for determining the material's resistance to torque, and is one of the basic test methods for testing the mechanical properties of materials. The torsion test can be used to determine the strength of the insulating arm segment 8 and assess the safety of the boom truck during use.

[0027] Example 1 An insulating arm segment bending and torsion test device for an insulating bucket arm vehicle comprises: a fixing assembly, and a test assembly connected to the fixing assembly and arranged in the same horizontal plane, wherein one end of the insulating arm segment 8 to be tested is connected to the fixing assembly, and the other end is connected to the test assembly through a torsion auxiliary component 6 or a bending auxiliary component 7; During the torsion test, the insulating arm section 8 to be tested and the test assembly are connected via the torsion auxiliary member 6; During the bending test, the insulating arm section 8 to be tested and the test assembly are connected via the bending auxiliary member 7 .

[0028] The insulating arm segment bending and torsion test device for the insulating boom vehicle is mainly composed of a fixing component, a test component, and two key auxiliary components, a torsion auxiliary component 6 and a bending auxiliary component 7. All components are carefully arranged in the same horizontal plane to ensure the stability and consistency of the test process. As the basis of the entire test, the stability of the fixing component is crucial. It can not only firmly fix one end of the insulating arm segment 8 to be tested, but also constitute the skeleton of the entire test system through the connection with the test component. The test component is the core power source in the test process. It can accurately apply bending or torsion force according to the test requirements to evaluate the performance of the insulating arm segment. The torsion auxiliary component 6 and the bending auxiliary component 7 serve as a bridge between the insulating arm segment 8 to be tested and the test component, which not only realizes the effective transmission of the test force, but also can easily switch between the bending test and the torsion test through a simple replacement operation. It not only greatly improves the flexibility of the test, but also significantly reduces the test cost and time cost. The insulating arm segment bending and torsion test device for the insulating boom vehicle provides strong support for the performance evaluation of the insulating boom vehicle with its unique structural design, efficient testing capabilities and flexible testing methods. It can not only ensure the stability and safety of the insulated arm section under complex working conditions, but also provide strong data support for the research and development, production and maintenance of insulated boom trucks, and promote the continuous progress and development of insulated boom truck technology.

[0029] Example 2 An insulating arm segment bending and torsion test device for an insulating bucket arm vehicle comprises: a fixing assembly, and a test assembly connected to the fixing assembly and arranged in the same horizontal plane, wherein one end of the insulating arm segment 8 to be tested is connected to the fixing assembly, and the other end is connected to the test assembly through a torsion auxiliary component 6 or a bending auxiliary component 7; During the torsion test, the insulating arm section 8 to be tested and the test assembly are connected via the torsion auxiliary member 6; During the bending test, the insulating arm section 8 to be tested and the test assembly are connected via the bending auxiliary member 7 .

[0030] The fixing assembly comprises a fixing member 1 and a long rod connecting member 2 connected to the fixing member 1 .

[0031] The long rod connecting member 2 is connected to the fixing member 1 by welding.

[0032] The length of the long rod connecting member 2 is greater than the length of the insulating arm section 8 to be tested.

[0033] The long rod connecting member 2 is connected to the test assembly via a bending and torsion fixing member 3 ; the bending and torsion fixing member 3 is movably sleeved on the long rod connecting member 2 .

[0034] A plurality of holes for fixing the bending and torsion fixing member 3 are provided on the surface of the long rod connecting member 2 ; and a supporting foot is provided at the bottom of the long rod connecting member 2 .

[0035] The test assembly includes a hydraulic cylinder 4 and a dynamometer 5 connected to the hydraulic cylinder 4 ; one end of the hydraulic cylinder 4 is connected to the bending and torsion fixing member 3 , and the other end is connected to the torsion auxiliary member 6 or the bending auxiliary member 7 .

[0036] The insulating arm segment bending and torsion test device for the insulating boom vehicle realizes efficient and accurate testing functions through the carefully designed fixing assembly, test assembly, and replaceable torsion auxiliary parts 6 and bending auxiliary parts 7. The fixing assembly consists of a fixing part 1 and a long rod connecting part 2. The long rod connecting part 2 is firmly connected to the fixing part 1 by welding, and its length is greater than the insulating arm segment 8 to be tested, thereby ensuring the stability of the test. The bending and torsion fixing part 3 is movably sleeved on the long rod connecting part 2 and fixed through holes, thereby making the test more flexible. The test assembly includes a hydraulic cylinder 4 and a dynamometer 5. One end of the hydraulic cylinder 4 is connected to the bending and torsion fixing part 3, and the other end is connected to the torsion auxiliary part 6 or the bending auxiliary part 7, thereby realizing accurate force value control and bending and torsion measurement. This device not only improves the accuracy and efficiency of the test, but also reduces the test cost through modular design, thereby providing strong technical support for the performance evaluation of the insulating boom vehicle and ensuring the stability and safety of the insulating arm segment under complex working conditions.

[0037] Example 3 An insulating arm segment bending and torsion test device for an insulating bucket arm vehicle comprises: a fixing assembly, and a test assembly connected to the fixing assembly and arranged in the same horizontal plane, wherein one end of the insulating arm segment 8 to be tested is connected to the fixing assembly, and the other end is connected to the test assembly through a torsion auxiliary component 6 or a bending auxiliary component 7; During the torsion test, the insulating arm section 8 to be tested and the test assembly are connected via the torsion auxiliary member 6; During the bending test, the insulating arm section 8 to be tested and the test assembly are connected via the bending auxiliary member 7 .

[0038] The fixing assembly comprises a fixing member 1 and a long rod connecting member 2 connected to the fixing member 1 .

[0039] The long rod connecting member 2 is connected to the fixing member 1 by welding.

[0040] The length of the long rod connecting member 2 is greater than the length of the insulating arm section 8 to be tested.

[0041] The long rod connecting member 2 is connected to the test assembly via a bending and torsion fixing member 3 ; the bending and torsion fixing member 3 is movably sleeved on the long rod connecting member 2 .

[0042] A plurality of holes for fixing the bending and torsion fixing member 3 are provided on the surface of the long rod connecting member 2 ; and a supporting foot is provided at the bottom of the long rod connecting member 2 .

[0043] The test assembly includes a hydraulic cylinder 4 and a dynamometer 5 connected to the hydraulic cylinder 4 ; one end of the hydraulic cylinder 4 is connected to the bending and torsion fixing member 3 , and the other end is connected to the torsion auxiliary member 6 or the bending auxiliary member 7 .

[0044] The fixing member 1 is a rectangular parallelepiped with a hollow structure, and is assembled from plates on all sides. The surface of the plates is provided with a hole structure for fixing the insulating arm segment 8 to be tested.

[0045] The torsion auxiliary component 6 is sleeved in the insulating arm section 8 to be tested; the bending auxiliary component 7 is connected to the insulating arm section 8 to be tested in a combined manner.

[0046] The insulating arm segment bending and torsion test device for the insulating bucket arm vehicle realizes efficient and comprehensive testing of the insulating arm segment 8 to be tested through the ingenious combination of the fixing assembly and the test assembly, as well as the flexible application of the torsion auxiliary component 6 and the bending auxiliary component 7. This design not only improves the accuracy of the test, but also greatly enhances the flexibility of the test, so that the device can adapt to the testing needs of insulating arm segments of different models and specifications. The fixing part 1 in the fixing assembly adopts a rectangular parallelepiped design with a hollow structure, and is assembled by solid plates on all sides, which not only reduces the overall weight of the device, but also enhances its stability. The hole structure on the surface of the plate provides great convenience for fixing the insulating arm segment 8 to be tested, ensuring stability and reliability during the test.

[0047] The long rod connector 2 is firmly connected to the fixing member 1 by welding, and its length is greater than the insulating arm segment 8 to be tested, so that the insulating arm segment has enough space to bend and twist during the test, so as to more accurately evaluate its performance. At the same time, the bending and twisting fixing member 3 on the long rod connector 2 can be flexibly mounted and fixed, further improving the flexibility and accuracy of the test.

[0048] The combined application of the hydraulic cylinder 4 and the dynamometer 5 in the test assembly realizes the precise control and measurement of the test force. One end of the hydraulic cylinder 4 is connected to the bending and torsion fixing member 3, and the other end is connected to the torsion auxiliary member 6 or the bending auxiliary member 7, so that the test force can be evenly and stably transmitted to the insulating arm section 8 to be tested, thereby ensuring the accuracy of the test results.

[0049] The torsion auxiliary member 6 is sleeved in the insulating arm section 8 to be tested, which not only simplifies the test process but also improves the accuracy of the test. The bending auxiliary member 7 is connected to the insulating arm section 8 to be tested in a combined manner, which further enhances the flexibility and adaptability of the test, so that the device can cope with various complex test scenarios.

[0050] Example 4 An insulating arm section bending and torsion test device for an insulating bucket arm vehicle comprises: a fixing part 1, a long rod connecting part 2, a bending and torsion fixing part 3, a hydraulic cylinder 4, a tensile gauge 5, a torsion auxiliary part 6, a bending auxiliary part 7, and an insulating arm section 8 to be tested. The fixing part 1 is used to firmly fix the insulating arm section 8 to be tested to ensure stability during the test. The long rod connecting part 2 provides sufficient length and connection points to facilitate the installation and fixing of other test auxiliary parts. The long rod connecting part 2 is longer than the insulating arm section 8 to be tested, and holes are provided on the surface to facilitate the installation and fixing of the bending and torsion fixing part 3. The bending and torsion fixing part 3 is sleeved on the long rod connecting part 2, and the position can be flexibly adjusted according to the test conditions, and is used to fix one end of the insulating arm section 8 to be tested in the torsion test. The hydraulic cylinder 4 serves as a power source for the test device and provides the necessary bending or torsion force. The tensile gauge 5 is connected to the hydraulic cylinder 4 to accurately record the force value changes during the test to ensure the accuracy of the test results. The torsion auxiliary part 6 is sleeved on the insulating arm section 8 to be tested to assist in applying torque in the torsion test. The bending auxiliary component 7 is connected to the insulating arm segment 8 to be tested in a combined manner, and is used to provide necessary support and guidance in the bending test. The insulating arm segment 8 to be tested is the test object of the present invention, and its bending and torsion performance is evaluated by the device. The fixing member 1 is connected to the long rod connector 2 by welding to ensure the stability of the overall structure. The bending and torsion fixing member 3 is connected to the long rod connector 2 by holes and fasteners, and the position is adjustable. The bending auxiliary component 7 is connected to the insulating arm segment 8 to be tested in a combined manner, which is convenient for providing support in the bending test. The torsion auxiliary component 6 is connected to the insulating arm segment 8 to be tested by a socket connection, and is used to apply torque in the torsion test. The hydraulic cylinder 4 is connected to the dynamometer 5 by a connector to form the core part of the test device.

[0051] When performing the bending test, check whether the connection between the dynamometer 5 and the hydraulic cylinder 4 is intact, and assemble and fix the insulating arm section 8 to be tested with the fixing part 1. Connect the bending auxiliary part 7 to the insulating arm section 8 to be tested in a combined manner, and connect the bending auxiliary part 7 and the bending torsion fixing part 3 fixed on the long rod connecting part 2 at both ends of the hydraulic cylinder 4. Start the hydraulic cylinder 4, apply a gradually increasing bending force until the predetermined bending limit is reached, record the force value reading through the dynamometer 5, and evaluate the bending strength of the insulating arm section to be tested.

[0052] When performing the torsion test, the connection between the dynamometer 5 and the hydraulic cylinder 4 is also checked, and the insulating arm section 8 to be tested is assembled and fixed with the fixing part 1. The torsion auxiliary part 6 is connected to the insulating arm section 8 to be tested in a combined manner, and the two ends of the hydraulic cylinder 4 are respectively connected to the torsion auxiliary part 6 and the bending torsion fixing part 3 fixed on the long rod connecting part 2. Start the hydraulic cylinder 4, apply a gradually increasing torsion force, and record the force value change through the dynamometer 5 until the predetermined torsion limit is reached, and evaluate the torsion strength of the insulating arm section to be tested.

[0053] The insulating arm segment bending and torsion testing device for live working vehicles disclosed in the present invention can comprehensively evaluate the bending and torsion performance of the insulating arm segments through precise structural design and flexible testing methods, thereby providing a strong guarantee for the safety and reliability of live working vehicles.

[0054] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A bending and torsion test device for insulating arm sections of live working vehicles, characterized in that: It comprises: a fixing assembly, and a testing assembly connected to the fixing assembly and arranged in the same horizontal plane, wherein one end of the insulating arm segment (8) to be tested is connected to the fixing assembly, and the other end is connected to the testing assembly via a torsion auxiliary component (6) or a bending auxiliary component (7); During the torsion test, the insulating arm section (8) to be tested and the test assembly are connected via the torsion auxiliary component (6); During the bending test, the insulating arm section (8) to be tested and the test assembly are connected via the bending auxiliary component (7).

2. The insulating arm segment bending and torsion testing device for live working vehicles according to claim 1 is characterized in that: The fixing assembly comprises a fixing member (1) and a long rod connecting member (2) connected to the fixing member (1).

3. The insulating arm segment bending and torsion testing device for live working vehicles according to claim 2 is characterized in that: The long rod connecting piece (2) and the fixing piece (1) are connected by welding.

4. The insulating arm segment bending and torsion testing device for live working vehicles according to claim 2, characterized in that: The length of the long rod connecting piece (2) is greater than the length of the insulating arm section (8) to be tested.

5. The insulating arm segment bending and torsion testing device for live working vehicles according to claim 2, characterized in that: The long rod connecting member (2) is connected to the test assembly via a bending and torsion fixing member (3); the bending and torsion fixing member (3) is movably sleeved on the long rod connecting member (2).

6. The insulating arm segment bending and torsion testing device for live working vehicles according to claim 5, characterized in that: The surface of the long rod connecting piece (2) is provided with a plurality of holes for fixing the bending and torsion fixing piece (3); and the bottom of the long rod connecting piece (2) is provided with a supporting foot.

7. The insulating arm segment bending and torsion testing device for live working vehicles according to claim 6, characterized in that: The test assembly comprises a hydraulic cylinder (4) and a dynamometer (5) connected to the hydraulic cylinder (4); one end of the hydraulic cylinder (4) is connected to the bending and torsion fixing member (3), and the other end is connected to the torsion auxiliary member (6) or the bending auxiliary member (7).

8. The insulating arm segment bending and torsion testing device for live working vehicles according to claim 2, characterized in that: The fixing member (1) is a rectangular parallelepiped with a hollow structure, and is assembled from plates on all sides. A hole-shaped structure for fixing the insulating arm segment (8) to be tested is provided on the surface of the plate.

9. The insulating arm segment bending and torsion testing device for live working vehicles according to claim 1, characterized in that: The torsion auxiliary component (6) is sleeved in the insulating arm section (8) to be tested; and the bending auxiliary component (7) is connected to the insulating arm section (8) to be tested in a combined manner.

10. The method for using the insulating arm segment bending and torsion testing device for live working vehicles according to any one of claims 1 to 9, characterized in that: The following steps are involved: When performing a bending test, firstly, one end of the insulating arm segment (8) to be tested is assembled and fixed with the fixing component, and the other end is installed with the bending auxiliary component (7). The insulating arm segment (8) to be tested and the test component are connected via the bending auxiliary component (7). The other end of the test component is connected to the fixing component, the test component is started, a bending force is applied, and the change in the force value is recorded. When performing a torsion test, firstly, one end of the insulating arm segment (8) to be tested is assembled and fixed with the fixing component, and the other end is connected to the torsion auxiliary component (6). The insulating arm segment (8) to be tested and the test component are connected via the torsion auxiliary component (6). The other end of the test component is connected to the fixing component. The test component is started, a torsion force is applied, and the change in the force value is recorded.

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