A multifunctional test rack and a test method thereof

Abstract

The application discloses a kind of electric multifunctional test frame and its test method, including support body, pendulum device and static load device, pendulum device and static load device are detachably fixedly connected with support body, pendulum device and static load device can carry out independent test each other;Pendulum device includes hanging assembly, pendulum, lifting assembly, pull rope and controller;Support body top is equipped with the upper support of back type and several test stations;Controller controls lifting assembly to drive pendulum to move by pull rope, lifting assembly includes alignment instrument for centering test station;Static load device includes support assembly and force bar, support assembly one end is detachably fixedly connected with support body, other end is with force bar abuttingly cooperated, force bar one end away from support assembly is with elevator component abuttingly cooperated.The electric multifunctional test frame and its test method of the application, multifunctional test frame has the advantages of diversified test function, high precision.

Description

Technical Field

[0001] This invention belongs to the field of test rack technology, specifically relating to an electric multifunctional test rack and its testing method. Background Technology

[0002] With the development of the elevator manufacturing industry, elevator safety performance, especially the safety performance of elevator landing door systems, has received increasing attention. To this end, many elevator manufacturers and component suppliers have conducted pendulum impact tests on landing door systems as required by Amendment No. 1 to GB 7588-2003 "Safety Code for Elevator Manufacturing and Installation". Currently, there are no dedicated testing racks for elevator components, but elevators must be tested before use. Only after the tests verify that their strength, rigidity, and safety meet the design requirements can they be put into operation.

[0003] Traditional testing methods can only install samples on doors or flat car walls. If multiple samples are to be tested, multiple test frames are required. During testing, the pendulum is manually aligned and lifted after visual inspection. Human error can affect the impact energy of the pendulum, and there are also potential safety hazards during the testing process. Current test frames are limited in function and scope, with only one location for installing test samples. Furthermore, the testing methods are difficult to operate and have poor accuracy.

[0004] Therefore, to address the shortcomings of existing technologies, an electric multifunctional test rack and its testing method are provided. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, this invention provides an electric multifunctional test rack and its testing method, aiming to solve the problems of limited testing functions and poor testing accuracy.

[0006] The present invention adopts the following technical solution:

[0007] An electric multifunctional test rack includes a support body, a pendulum device, and a static load device. The pendulum device and the static load device are detachably fixedly connected to the support body, and the pendulum device and the static load device can perform independent tests.

[0008] The pendulum device includes a suspension assembly, a pendulum, a lifting assembly, a pulling rope, and a controller. The top of the support body has a U-shaped upper support and several test stations, each test station being vertically positioned below the upper support. The suspension assembly is suspended above each test station and slidably connected to the upper support. The pendulum is positioned at the end of the suspension assembly furthest from the upper support. The lifting assembly is slidably positioned above the upper support and electrically connected to the controller. One end of the pulling rope is fixedly connected to the lifting assembly, and the other end is fixedly connected to the pendulum. The controller controls the lifting assembly to move the pendulum via the pulling rope. The lifting assembly includes an alignment device for centering the test station.

[0009] The static load device includes a support assembly and a force-applying rod. One end of the support assembly is detachably fixed to the bracket body, and the other end abuts against the force-applying rod. The end of the force-applying rod away from the support assembly abuts against the elevator component.

[0010] As a further improvement to the technical solution of the present invention, the hanging assembly includes a first plate, a second plate, a connecting bracket and several rollers, and the upper bracket includes several connecting beams connected end to end;

[0011] The first plate is fixedly connected to the second plate via the connecting bracket. The first plate and the second plate are arranged parallel to each other and spaced apart from top to bottom. The first plate and / or the second plate are detachably fixedly connected to the connecting beam. The plurality of rollers are all located between the first plate and the connecting beam. The upper end of each roller is fixedly connected to the first plate, and the lower end is rolledly connected to the connecting beam. The second plate is located below the connecting beam.

[0012] As a further improvement to the technical solution of the present invention, the hanging assembly further includes a hanging rope and an adjusting screw for suspending the pendulum. The adjusting screw is threadedly connected to the second plate. One end of the hanging rope is fixedly connected to the end of the adjusting screw away from the second plate, and the other end is fixedly connected to the pendulum. The distance between the pendulum and the second plate is adjustable.

[0013] As a further improvement to the technical solution of the present invention, the support assembly includes a mounting base fixedly connected to the two side frames of the bracket body, a first connector, a second connector, two symmetrically arranged rocker arms, a limiting component, and a support angle steel;

[0014] The rocker arm is rotatably connected to the mounting base via the first connector. The two rocker arms are respectively set at both ends of the supporting angle steel via the second connector. The vertical height of the supporting angle steel is adjusted via the second connector. The mounting base, the first connector, the second connector, the two symmetrically arranged rocker arms, and the supporting angle steel constitute a three-bar linkage structure when rotating on two axes.

[0015] As a further improvement to the technical solution of the present invention, the lifting assembly further includes a support rod and an electric crane. The electric crane is slidably connected to the support rod in the opposite direction of the length of the support rod. The support rod is slidably connected to the connecting beam across the connecting beam. The sliding direction of the electric crane is perpendicular to the sliding direction of the support rod.

[0016] The electric crane is equipped with a hook, which is connected to the towing rope.

[0017] As a further improvement to the technical solution of the present invention, the connecting beam corresponds to the test station, and the controller is provided with buttons that correspond one-to-one with the test station.

[0018] As a further improvement to the technical solution of the present invention, the controller is an infrared remote control.

[0019] As a further improvement to the technical solution of the present invention, the alignment device is an infrared alignment device, which is equipped with multiple infrared emitters.

[0020] An electrically powered multifunctional test rack and its testing method are applicable to the aforementioned electrically powered multifunctional test rack, including pendulum tests and static load tests that are conducted independently of each other. The pendulum test includes the following steps:

[0021] S1. Check whether the test rack meets the test requirements;

[0022] S2. Install the elevator components to be tested on the corresponding test station;

[0023] S3. Install the pendulum on the suspension assembly, and operate the suspension assembly to adjust the horizontal position and height of the pendulum off the ground to a suitable position;

[0024] S4. Start the lifting assembly with the operation controller, move the lifting assembly to a position away from the test station, center it by controlling the alignment instrument, and control the pulling rope to lift the pendulum by the lifting assembly.

[0025] S5. After the lifting is completed, the pulling rope is released, and the pendulum strikes the elevator components, completing one impact.

[0026] S6. Repeat S4-S5 to complete the pendulum test.

[0027] As a further improvement to the technical solution of the present invention, the static load test includes the following steps:

[0028] S1. Check whether the test rack meets the test requirements;

[0029] S2. Install the elevator component to be tested on the frame of the bracket body;

[0030] S3. Rotate the rocker arm to the appropriate position, and after ensuring that the angles of the rocker arms on both sides are the same, fix the rocker arm with the limiting piece.

[0031] S4. Fix the supporting angle steel to the end of the rocker arm through the second connector, and adjust the height of the angle steel to form a three-bar structure to ensure that the supporting angle steel is parallel and opposite to the test sample.

[0032] S5. Using the force-applying rod, with one end against the elevator component and the other end against the supporting angle steel, activate the force-applying rod to apply force to the elevator component;

[0033] S6. After applying force for a period of time, the static load test is completed.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] This invention proposes an electrically powered multifunctional test rack and its testing method, comprising a pendulum device and a static load device capable of conducting independent tests. During the pendulum test, a U-shaped upper support and three test positions are installed on the top of the support body. A lifting assembly that can move forward, backward, left, and right is installed on the upper support, and an alignment device for centering the test positions is installed on the lifting assembly to ensure test accuracy. Each test position has a hanging assembly for suspending the pendulum. During the test, the lifting assembly can simultaneously lift all three pendulums, testing the elevator components at the three test positions simultaneously. Different elevator components can be placed at the three test positions. During the static load test, the elevator component is fixed to the frame of the support body, and a force-applying rod is used to apply pressure to the support assembly and the elevator component. This electrically powered multifunctional test rack and its testing method feature diversified testing functions and high accuracy. Attached Figure Description

[0036] The technology of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0037] Figure 1 This is a three-dimensional structural diagram of an electric multifunctional test rack and its test methods;

[0038] Figure 2 This is a front view of an electric multi-functional test rack and its test methods;

[0039] Figure 3This is a left view of an electrically powered multifunctional test rack and its test methods;

[0040] Figure 4 This is a top view of an electrically powered multifunctional test rack and its testing methods;

[0041] Figure 5 This is a schematic diagram of the support components in the static load device of an electric multifunctional test rack and its test method;

[0042] Figure 6 This is a schematic diagram of the hanging components in the pendulum device of an electric multifunctional test rack and its test method.

[0043] Figure label:

[0044] 1. Support body; 11. Upper support; 111. Support beam; 12. Test station; 13. Work frame; 14. Aisle;

[0045] 2. Pendulum device; 21. Suspension assembly; 211. First plate; 212. Second plate; 213. Connecting bracket; 214. Several rollers; 215. Suspension rope; 216. Adjusting screw; 217. Locking screw; 22. Pendulum; 23. Lifting assembly; 231. Alignment instrument; 232. Support rod; 233. Electric crane; 2334. Hook;

[0046] 3. Static load device; 31. Support assembly; 311. Mounting base; 312. First connector; 313. Second connector; 314. Rocker arm; 315. Limiting component; 316. Support angle steel; 32. Force bar;

[0047] 4. Elevator components. Detailed Implementation

[0048] The following will provide a clear and complete description of the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the accompanying drawings indicate the same or similar parts.

[0049] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "up," "down," "left," and "right" used in this invention are only relative to the relative positional relationships of the various components of the invention in the accompanying drawings.

[0050] An electric multifunctional test rack and its test method, with reference to Figures 1 to 6It includes a support body 1, a pendulum 22 device 2 and a static load device 3;

[0051] The pendulum 22 device 2 and the static load device 3 are both detachably fixedly connected to the support body 1, and the pendulum 22 device 2 and the static load device 3 can be tested independently of each other; the pendulum 22 device 2 includes a hanging assembly 21, a pendulum 22, a lifting assembly 23, a pulling rope, and a controller; the top of the support body 1 is provided with a U-shaped upper support 11 and several test stations 12, and the test stations 12 are vertically arranged below the upper support 11; the hanging assembly 21 is suspended above each test station 12 and slidably connected to the upper support 11, and the pendulum 22 is located at the end of the hanging assembly 21 away from the upper support 11; The lifting assembly 23 is slidably disposed above the upper support 11. The lifting assembly 23 is electrically connected to the controller. One end of the pulling rope is fixedly connected to the lifting assembly 23, and the other end is fixedly connected to the pendulum 22. The controller controls the lifting assembly 23 to drive the pendulum 22 to move through the pulling rope. The lifting assembly 23 includes an alignment instrument 231 for centering the test station 12. The static load device 3 includes a support assembly 31 and a force-applying rod 32. One end of the support assembly 31 is detachably fixedly connected to the support body 1, and the other end is engaged with the force-applying rod 32. The end of the force-applying rod 32 away from the support assembly 31 is engaged with the elevator component 4.

[0052] The system includes a pendulum 22 device 2 and a static load device 3. During the pendulum 22 test, a U-shaped upper support 11 and three test stations 12 are installed on the top of the support body 1. A lifting assembly 23, which can move forward, backward, left, and right, is installed on the upper support 11. An alignment device 231 for centering the test stations 12 is installed on the lifting assembly 23 to ensure test accuracy. Each test station 12 has a hanging assembly 21 for suspending the pendulum 22. During the test, the lifting assembly 23 can simultaneously lift all three pendulums 22, testing the elevator components 4 on the three test stations 12 simultaneously. Different elevator components 4 can be placed on the three test stations 12. During the static load test, the elevator components 4 are fixed to the frame of the support body 1, and pressure is applied to the support assembly 31 and the elevator components 4 using a force-applying rod 32. This electric multi-functional test rack and its test method feature diversified testing functions and high accuracy.

[0053] In one embodiment, the hanging assembly 21 includes a first plate 211, a second plate 212, a connecting bracket 213, and four rollers. The upper bracket 11 includes several connecting beams connected end to end, forming a cuboid structure. The first plate 211 is fixedly connected to the second plate 212 via the connecting bracket 213. The first plate 211 and the second plate 212 are arranged parallel to each other and spaced apart from top to bottom. The first plate 211 and / or the second plate 212 are detachably fixedly connected to the connecting beams. The four rollers are all located between the first plate 211 and the connecting beams. The upper end of each roller is fixedly connected to the first plate 211, and the lower end is rolledly connected to the connecting beam. The second plate 212 is located below the connecting beam. The hanging assembly 21 is also provided with locking screws 217, which are used to lock the hanging assembly 21 onto the connecting beam. The connecting beam is also provided with a slide for the first plate 211 to slide.

[0054] The suspension assembly 21 also includes a suspension rope 215 and an adjusting screw 216 for suspending the pendulum 22. The adjusting screw 216 is threadedly connected to the second plate 212. One end of the suspension rope 215 is fixedly connected to the end of the adjusting screw 216 away from the second plate 212, and the other end is fixedly connected to the pendulum 22. The distance between the pendulum 22 and the second plate 212 is adjustable. The vertical position of the pendulum 22 is adjusted by adjusting the distance between the pendulum 22 and the second plate 212. When each roller rotates synchronously, it can drive the first plate 211 and the second plate 212 to move horizontally relative to the I-beam synchronously, thereby adjusting the horizontal position of the pendulum 22. It is not necessary to adjust the horizontal position of the pendulum 22 by moving the entire pendulum 22 test frame. The steps for adjusting the position of the pendulum 22 are relatively simple and easy to install and disassemble.

[0055] The connecting beam corresponds to the test station 12, and the controller is equipped with buttons that correspond one-to-one with the test station 12. The buttons can be labeled as button A, button B, and button C. The test stations 12 can be labeled as test station A, test station B, and test station C, respectively, corresponding to buttons A, B, and C. Test station A is set opposite to the entrance of the support body 1, and test station B is set opposite to test station C. The controller is an infrared remote control. The alignment device 231 is an infrared alignment device 231, which is equipped with three infrared transmitters. If a test needs to be conducted at test station A 12, the electric crane 233 is moved to the end near the entrance, and then button A is pressed. At this time, the infrared transmitter of the alignment device 231 will automatically align with test station A 12.

[0056] In one embodiment, the support assembly 31 includes a mounting base 311 fixedly connected to the two side frames of the bracket body 1, a first connector 312, a second connector 313, two symmetrically arranged rocker arms 314, a limiting member 315, and a supporting angle steel 316. The rocker arms 314 are rotatably connected to the mounting base 311 via the first connector 312, and the two rocker arms 314 are respectively disposed at both ends of the supporting angle steel 316 via the second connector 313. The vertical height of the supporting angle steel 316 is adjusted via the second connector 313. The mounting base 311, the first connector 312, the second connector 313, the two symmetrically arranged rocker arms 314, and the supporting angle steel 316 are all connected together. Angle steel 316 forms a three-bar linkage structure when the two axes rotate. During the static load test, the mounting base 311 is set at a suitable height on both sides of the bracket body 1. The rocker arm 314 set on the mounting base 311 is rotated. When the rocker arms 314 on both sides swing to a suitable angle, and the angles of the rocker arms 314 on both sides are the same, the limiting member 315 is used to fix it. Then, the supporting angle steel 316 is fixed to the end of the rocker arm 314 through the second connecting member 313. The height of the supporting angle steel 316 is adjusted through the second connecting member 313 to form a three-bar linkage structure. The elevator component 4 that needs to be statically tested is fixed on the supporting angle steel 316, and the installation is completed.

[0057] In one embodiment, the lifting assembly 23 further includes a support rod 232 and an electric crane 233. The electric crane 233 is slidably connected to the support rod 232 in the opposite direction of the length of the support rod 232. The support rod 232 is slidably connected to the connecting beams across the connecting beams. The sliding direction of the electric crane 233 is perpendicular to the sliding direction of the support rod 232. The electric crane 233 is provided with a hook 2334, which is connected to a pulling rope.

[0058] In one embodiment, the test rack further includes a work frame 13 and a staircase, with the work frame 13 fixedly connected to the staircase and the work frame 13 surrounding the outer periphery of the support body 1.

[0059] A test method for an electrically powered multifunctional test rack, applicable to the aforementioned electrically powered multifunctional test rack, includes static load testing and pendulum testing.

[0060] In one embodiment, the static load test includes the following steps:

[0061] S1. Check whether the test rack meets the test requirements;

[0062] S2. Install the elevator component to be tested on the frame of the bracket body;

[0063] S3. Rotate the rocker arm to the appropriate position, and after ensuring that the angles of the rocker arms on both sides are the same, fix the rocker arm with the limiting piece.

[0064] S4. Fix the supporting angle steel to the end of the rocker arm through the second connector, and adjust the height of the angle steel to form a three-bar structure to ensure that the supporting angle steel is parallel and opposite to the test sample.

[0065] S5. Using the force-applying rod, with one end against the elevator component and the other end against the supporting angle steel, activate the force-applying rod to apply force to the elevator component;

[0066] S6. After applying force for a period of time, complete the static load test. After the static load test, remove the supporting angle steel and swing the two rocker arms to be parallel to the test position A. Fix them with limiters so that the rocker arms no longer swing.

[0067] In one embodiment, the pendulum test includes the following steps:

[0068] S1. Check whether the test rack meets the test requirements;

[0069] S2. Install the elevator component to be tested on the corresponding test station A;

[0070] S3. Use an electric crane to install the pendulum on the suspension assembly and check whether the pendulum is securely suspended. Adjust the horizontal position of the pendulum by moving the suspension assembly and adjust the height of the pendulum off the ground by adjusting the screw. After the position of the pendulum is adjusted to meet the test requirements, use the locking screw to lock the suspension assembly.

[0071] S4. Start the lifting assembly with the controller and move the lifting assembly to a position away from the test position. The relative distance between the lifting assembly and the test position is about 2.5m. Press the A button on the controller to control the alignment instrument to automatically center the A test position. After the centering is completed, press the A button on the controller again to turn off the alignment instrument. Use the lifting assembly to control the pulling rope to lift the pendulum.

[0072] S5. After the lifting is completed, the pulling rope is released. The pendulum will strike the elevator components under its own weight and the action of the hanging rope, completing one impact.

[0073] S6. Repeat S4-S5 to complete the pendulum test.

[0074] In another embodiment, the pendulum test includes the following steps:

[0075] S1. Check whether the test rack meets the test requirements;

[0076] S2. Install the three elevator components to be tested on the corresponding three test stations respectively;

[0077] S3. Use an electric crane to install the pendulum on the suspension assembly and check whether the pendulum is securely suspended. Adjust the horizontal position of the pendulum by moving the suspension assembly and adjust the height of the pendulum off the ground by adjusting the screw. After the position of the pendulum is adjusted to meet the test requirements, use the locking screw to lock the suspension assembly. Repeat the above actions to complete the installation of the three pendulums on the three suspension assemblies.

[0078] S4. Start the lifting assembly with the controller and move it to a position away from the test station. The relative distance between the lifting assembly and test stations A, B, and C is approximately 2.5m. Press buttons A, B, and C on the controller to control the alignment instrument to automatically align with test stations A, B, and C respectively. After alignment is completed, press buttons A, B, and C on the controller again to turn off the alignment instrument. Use the lifting assembly to control the pull rope to lift the pendulum simultaneously.

[0079] S5. After the lifting is completed, the pulling rope is released. The pendulum, under its own weight and the action of the hanging rope, strikes the three elevator components respectively, completing one impact.

[0080] S6. Repeat S4-S5 to complete the pendulum test.

[0081] Other aspects of the electric multifunctional test rack and its test method of the present invention can be found in the prior art and will not be repeated here.

[0082] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An electric multifunctional test rack, characterized in that: It includes a support body, a pendulum device, and a static load device. The pendulum device and the static load device are detachably fixed to the support body, and the pendulum device and the static load device can be tested independently of each other. The pendulum device includes a suspension assembly, a pendulum, a lifting assembly, a pulling rope, and a controller. The top of the support body has a U-shaped upper support and several test stations, each test station being vertically positioned below the upper support. The suspension assembly is suspended above each test station and slidably connected to the upper support. The pendulum is positioned at the end of the suspension assembly furthest from the upper support. The lifting assembly is slidably positioned above the upper support and electrically connected to the controller. One end of the pulling rope is fixedly connected to the lifting assembly, and the other end is fixedly connected to the pendulum. The controller controls the lifting assembly to move the pendulum via the pulling rope. The lifting assembly includes an alignment device for centering the test station. The static load device includes a support assembly and a force-applying rod. One end of the support assembly is detachably fixed to the bracket body, and the other end abuts against the force-applying rod. The end of the force-applying rod away from the support assembly abuts against the elevator component. The hanging assembly includes a first plate, a second plate, a connecting bracket, and several rollers. The upper bracket includes several connecting beams connected end to end. The first plate is fixedly connected to the second plate through the connecting bracket. The first plate and the second plate are arranged parallel to each other and spaced apart from top to bottom. The first plate and / or the second plate are detachably fixedly connected to the connecting beams. The several rollers are all located between the first plate and the connecting beams. The upper end of each roller is fixedly connected to the first plate, and the lower end is rolledly connected to the connecting beam. The second plate is located below the connecting beam. The suspension assembly also includes a suspension rope and an adjusting screw for suspending the pendulum. The adjusting screw is threadedly connected to the second plate. One end of the suspension rope is fixedly connected to the end of the adjusting screw away from the second plate, and the other end is fixedly connected to the pendulum. The distance between the pendulum and the second plate is adjustable. The lifting assembly also includes a support rod and an electric crane. The electric crane is slidably connected to the support rod in the opposite direction of its length. The support rod is slidably connected to the connecting beam across the connecting beam. The sliding direction of the electric crane is perpendicular to the sliding direction of the support rod. The electric crane is equipped with a hook, which is connected to the pulling rope. The alignment device is an infrared alignment device, which is equipped with multiple infrared emitters.

2. The electric multifunctional test rack according to claim 1, characterized in that: The support assembly includes a mounting base fixedly connected to the two side frames of the bracket body, a first connector, a second connector, two symmetrically arranged rocker arms, a limiting component, and a supporting angle steel; The rocker arm is rotatably connected to the mounting base via the first connector. The two rocker arms are respectively set at both ends of the supporting angle steel via the second connector. The vertical height of the supporting angle steel is adjusted via the second connector. The mounting base, the first connector, the second connector, the two symmetrically arranged rocker arms, and the supporting angle steel constitute a three-bar linkage structure when rotating on two axes.

3. The electric multifunctional test rack according to claim 1, characterized in that: The connecting beam corresponds to the test station, and the controller is equipped with buttons that correspond one-to-one with the test station.

4. The electric multifunctional test rack according to claim 1, characterized in that: The controller is an infrared remote control.

5. A test method for an electrically powered multifunctional test rack, characterized in that, The electric multi-functional test rack applicable to any one of claims 1-4 includes pendulum tests and static load tests that are independent of each other, wherein the pendulum test includes the following steps: S1. Check whether the test rack meets the test requirements; S2. Install the elevator components to be tested on the corresponding test station; S3. Install the pendulum on the suspension assembly, and operate the suspension assembly to adjust the horizontal position and height of the pendulum off the ground to a suitable position; S4. Start the lifting assembly with the operation controller, move the lifting assembly to a position away from the test station, center it by controlling the alignment instrument, and control the pulling rope to lift the pendulum by the lifting assembly. S5. After the lifting is completed, the pulling rope is released, and the pendulum strikes the elevator components, completing one impact. S6. Repeat S4-S5 to complete the pendulum test.

6. The test method for the electrically powered multifunctional test rack according to claim 5, characterized in that: Static load testing includes the following steps: S1. Check whether the test rack meets the test requirements; S2. Install the elevator component to be tested on the frame of the bracket body; S3. Rotate the rocker arm to the appropriate position, and after ensuring that the angles of the rocker arms on both sides are the same, fix the rocker arm with the limiting piece. S4. Fix the supporting angle steel to the end of the rocker arm through the second connector, and adjust the height of the angle steel to form a three-bar structure to ensure that the supporting angle steel is parallel and opposite to the test sample. S5. Using the force-applying rod, with one end against the elevator component and the other end against the supporting angle steel, activate the force-applying rod to apply force to the elevator component; S6. After applying force for a period of time, the static load test is completed.

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