Device for testing mechanical strength of elevator landing door

Abstract

The invention discloses an elevator landing door mechanical strength testing device which comprises a main support system, the main support system is provided with a landing door installation part used for fixing an elevator landing door to be tested and a strength testing system corresponding to the landing door installation part, and the strength testing system comprises a pendulum bob. The pendulum bob is arranged at a position corresponding to the landing door mounting part, the strength testing system is used for fixing the pendulum bob and releasing the pendulum bob at a position required by testing, and the main support system is provided with a first adjusting system used for adjusting the horizontal position and the vertical position of the strength testing system. A strength test loading and feedback device used for being matched with the elevator landing door to be tested is arranged at the position close to the landing door installation part, the strength test system is arranged, the strength test loading and feedback device is matched with the elevator landing door, an automatic pendulum bob impact test and a static test of the elevator landing door can be achieved, and the test efficiency is improved. The testing process is high in precision, high in safety and convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator detection, in particular to the technical field of devices for testing the mechanical strength of elevator landing doors. Background Art

[0002] Elevators are one of the most common types of special equipment and means of transportation in people's lives and production. The main types include passenger elevators, freight elevators, escalators, etc. The safe operation of elevators is related to the vital interests of the general public. With the continuous development of the economic society, the important role of elevators in aspects such as transportation and cargo transportation is increasingly reflected. New technologies and new materials are constantly innovatively applied in elevators, and the safety and reliability of elevator equipment have also received increasing attention from society.

[0003] Especially in recent years, there have been many elevator safety accidents caused by insufficient strength of the elevator landing door system. Analyzing the causes of the accidents, it can be found that most of them are due to passengers' artificial impacts, kicking the landing doors, and after the door leaves are deformed, the internal devices are damaged, and finally passengers fall into the hoistway. In order to prevent such accidents from occurring, the "Safety Rules for the Construction and Installation of Lifts - Part 1: Passenger and Goods Lifts" GB / T 7588.1-2020 clearly stipulates the mechanical strength requirements for elevator landing doors and car doors. When the landing door is in the locked position and the car door is in the closed position, the mechanical strength of all landing doors, their door locks, and car doors shall meet the following requirements: 1. It can withstand a static force of 300 N acting vertically on any position on either side of the door leaf or door frame and evenly distributed over a circular (or square) area of 5 cm2, and: 1) The permanent deformation is not more than 1 mm; 2) The elastic deformation is not more than 15 mm.

[0004] After the test, the safety function of the door is not affected.

[0005] 2. It can withstand a static force of 1000 N acting vertically on any position on the landing door leaf or door frame from the landing direction or on the car door leaf or door frame from the inside of the car and evenly distributed over a circular (or square) area of 100 cm2, and there is no obvious permanent deformation (a maximum gap of 10 mm) that affects the function and safety.

[0006] 3. When the guiding device fixed on the door leaf fails, the horizontally sliding landing door shall have a device to keep the door leaf in the working position. The complete landing door assembly with these devices shall be able to withstand the pendulum impact test that meets the following requirements.

[0007] Among them, the requirements for the pendulum impact test are: From the landing side, when using a soft pendulum impact device to impact the panel or door frame at the impact point specified in GB 7588 from the middle of the width direction of the panel or door frame in accordance with the requirements of Appendix of GB 7588: 1) Permanent deformation may occur; 2) The landing door device shall not lose its integrity, remain in its original position, and the clearance after protruding into the hoistway shall not be greater than 0.12 m; 3) After the pendulum test, it is not required that the landing door can operate; 4) For the glass part, there shall be no cracks.

[0008] The impact test shall be carried out under the most unfavorable conditions considering wear and rust of the door system; when normal guiding devices may fail due to reasons such as wear, rust, fire, etc., the impact test shall be carried out under the state simulating the failure of normal guiding devices.

[0009] The current testing process is all completed manually, including the taking of points for static testing and pendulum impact testing, the test process and data acquisition. The overall process has the following problems: 1. The taking and marking of test points are carried out by manual measurement, with large errors, resulting in uncertainty of test results; 2. The deformation amount in static testing is generally measured by a dial gauge (mechanical or electronic), and there is a problem of alignment with the loading device with the landing door sample in between. It is necessary to find the corresponding position on the back of the landing door and install the dial gauge. There are certain errors in both the installation process and measurement; 3. There are certain safety risks for the personnel participating in the pendulum impact test (personnel assistance is required during the lifting and releasing processes, and the pendulum weighs 45 kg. In case of falling off, safety accidents are likely to occur); 4. The measurement of data such as the maximum deformation amount, permanent deformation amount, protruding size after impact, etc. requires human participation, resulting in operation errors. Summary of the Invention

[0010] The purpose of the present invention is to solve the problems in the prior art and propose a device for testing the mechanical strength of elevator landing doors, which can realize the automatic testing of elevator landing doors, with high precision, high safety and convenient operation in the testing process.

[0011] To achieve the above purpose, the present invention proposes a device for testing the mechanical strength of elevator landing doors, including a main support system. A landing door installation part for fixing the elevator landing door to be tested and a strength testing system corresponding to the landing door installation part are provided on the main support system. The strength testing system includes a pendulum. The pendulum is arranged at a position corresponding to the landing door installation part. The strength testing system is used to fix and release the pendulum at the test required position; The main support system is provided with a first adjustment system for adjusting the horizontal and vertical positions of the strength testing system; A strength test loading and feedback device for cooperating with the elevator floor door to be tested is provided near the floor door installation portion, and the strength test loading and feedback device includes a loading and feedback device platform, a loading and feedback transverse movement mechanism for driving the loading and feedback device platform to move laterally along the elevator floor door to be tested, and a linear push rod provided on the loading and feedback device platform. A force sensor for cooperating with the elevator floor door to be tested is provided on the arm of the linear push rod, and the linear push rod is arranged toward the elevator floor door to be tested and is used to drive the force sensor to translate in a direction away from or close to the elevator floor door to be tested.

[0012] Preferably, the strength testing system comprises a mounting seat, a recovery rod, and a flipping driver, the upper end of the pendulum is fixed to the mounting seat by a connecting rope, one end of the recovery rod is hingedly connected to the mounting seat, and the other end is provided with a unhooking mechanism for cooperating with the pendulum, and the flipping driver is used to drive the recovery rod to flip around the hinged position so that the unhooking mechanism can flip to the position of the pendulum in a free fall state, and drive the pendulum to flip to the required test position through the unhooking mechanism.

[0013] Preferably, the first adjustment system includes a laterally arranged first driving mechanism of the test system, which is connected to the mounting seat and is used to drive the mounting seat to translate in a direction away from or close to the floor door mounting portion. The first adjustment system also includes a laterally arranged second driving mechanism of the test system, and the driving direction of the second driving mechanism of the test system is perpendicular to the driving direction of the first driving mechanism of the test system.

[0014] Preferably, the first adjustment system further comprises a third driving mechanism of the test system vertically arranged on the main support system, and the third driving mechanism of the test system is used for driving the strength test system to be vertically lifted and lowered along the main support system.

[0015] Preferably, there are two loading and feedback device platforms, which are respectively arranged on the front and rear sides of the landing door installation part, and the two loading and feedback device platforms are respectively provided with a laser transmitter and a laser receiver which are arranged oppositely; The laser transmitter cooperates with the laser receiver to locate the edge position of the elevator floor door to be tested. When the laser transmitter and the laser receiver are simultaneously translated toward the elevator floor door to be tested, the initial signal-free point of the laser receiver is the sample edge of the elevator floor door to be tested.

[0016] Preferably, the loading and feedback device platform is further provided with a distance measuring sensor which is arranged toward the floor door mounting portion and relatively parallel to the linear push rod.

[0017] Preferably, the strength test loading and feedback device further includes a second lifting platform and a strength test loading and feedback lifting device for driving the second lifting platform to vertically lift along the main support system. The loading and feedback device platform, the loading and feedback transverse movement mechanism, the linear push rod, the force sensor, and the distance measuring sensor are all arranged on the second lifting platform.

[0018] Preferably, a rotating platform and a rotating driver for driving the rotating platform to horizontally rotate are arranged on the loading and feedback device platform, and the linear push rod is arranged on the rotating platform.

[0019] Preferably, during the test, the loading and feedback transverse movement mechanism and the strength test loading and feedback lifting device control the displacement of the distance measuring sensor to different positions and obtain the distance data between at least four points in the horizontal and vertical directions and the elevator landing door to be tested. According to the data of the distance measuring sensor, the spatial position of the elevator landing door to be tested is drawn, the relative angle between the elevator landing door to be tested and the distance measuring sensor and the linear push rod is calculated, and compared with the required angle for the test, the angle X that the linear push rod needs to deflect is calculated. According to the value of X, the rotating driver is controlled to adjust the angle of the rotating platform so that the linear push rod is perpendicular to the elevator landing door to be tested.

[0020] Preferably, the landing door installation part includes a lower landing door fixing frame and an upper landing door fixing frame arranged on the upper side of the lower landing door fixing frame. At least two vertically arranged landing door slide rails are further arranged on the main support system. The upper landing door fixing frame is fixedly arranged on the guide rail slider of the landing door slide rail, and an upper fixing frame lifting driver for driving the upper landing door fixing frame to lift up and down is further arranged on the main support system.

[0021] The beneficial effects of the device for testing the mechanical strength of an elevator landing door of the present invention: By setting a strength test system and a strength test loading and feedback device to cooperate with the elevator landing door, the present invention can realize the automatic pendulum impact test and static test of the elevator landing door. The test process has high precision, high safety, and convenient operation, realizes accurate and automatic positioning of the test points, efficiently records the test data, and successfully completes the test task. This innovative design greatly reduces the errors caused by manual operation and significantly improves the safety of the test process.

[0022] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. Brief Description of the Drawings

[0023] Figure 1 is the three-dimensional structural schematic diagram ① of the device for testing the mechanical strength of an elevator landing door of the present invention.

[0024] Figure 2It is the three-dimensional structural schematic diagram ② of a device for testing the mechanical strength of an elevator landing door according to the present invention.

[0025] Figure 3 It is the three-dimensional structural schematic diagram ③ of a device for testing the mechanical strength of an elevator landing door according to the present invention.

[0026] Figure 4 It is the three-dimensional structural schematic diagram of the strength testing system of a device for testing the mechanical strength of an elevator landing door according to the present invention.

[0027] Figure 5 It is the three-dimensional structural schematic diagram of the strength testing loading and feedback device of a device for testing the mechanical strength of an elevator landing door according to the present invention.

[0028] Figure 6 It is the side view structural schematic diagram of the strength testing loading and feedback device of a device for testing the mechanical strength of an elevator landing door according to the present invention.

[0029] Among them: 1 - Main support system; 2 - Strength testing system; 3 - Strength testing loading and feedback device; 11 - Landing door installation part; 21 - Mounting seat; 22 - Recovery rod; 23 - Flip drive; 24 - First drive mechanism of the testing system; 25 - Hook release mechanism; 26 - Pendulum; 27 - Second drive mechanism of the testing system; 28 - Third drive mechanism of the testing system; 31 - Loading and feedback device platform; 32 - Loading and feedback transverse movement mechanism; 33 - Linear push rod; 34 - Force sensor; 35 - Laser emitter; 36 - Laser receiver; 37 - Distance measuring sensor; 38 - Rotary platform; 39 - Rotary drive; 111 - Lower fixed frame of the landing door; 112 - Upper fixed frame of the landing door; 113 - Landing door slide rail; 310 - Second lifting platform; 311 - Strength testing loading and feedback lifting device. Specific embodiments

[0030] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0031] In the description of the present invention, it should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0033] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0034] Refer to Figures 1-3 , a device for testing the mechanical strength of an elevator landing door according to the present invention, includes a main support system 1. A landing door installation part 11 for fixing the elevator landing door to be tested and a strength test system 2 corresponding to the landing door installation part 11 are provided on the main support system 1. The strength test system 2 includes a pendulum 26. The pendulum 26 is arranged at a position corresponding to the landing door installation part 11. The strength test system 2 is used to fix and release the pendulum 26 at the test required position. The strength test system 2 is used to conduct a pendulum impact test on the elevator landing door.

[0035] Refer to Figure 4, Specifically, the strength test system 2 includes a mounting base 21, a recovery rod 22, and a flipping drive 23. The upper end of the pendulum 26 is fixed to the mounting base 21 through a connecting cable. One end of the recovery rod 22 is hinged to the mounting base 21, and the other end is provided with a decoupling mechanism 25 for cooperating with the pendulum 26. The flipping drive 23 is used to drive the recovery rod 22 to flip around the hinge position so that the decoupling mechanism 25 can flip to the position of the pendulum 26 in a free-falling state, and drive the pendulum 26 to flip to the test required position through the decoupling mechanism 25. The pendulum 26 is connected to the decoupling mechanism 25. The flipping drive 23 drives the recovery rod 22 to flip to a certain height, releases the pendulum 26 through the decoupling mechanism 25, and the pendulum 26 automatically hits the elevator landing door to be tested under the action of gravity, so as to perform the pendulum impact test. When the pendulum 26 needs to be recovered, the flipping drive 23 drives the recovery rod 22 to flip downward until the decoupling mechanism 25 approaches the pendulum 26, fixes the pendulum 26 to the decoupling mechanism 25 again, and then the flipping drive 23 drives the recovery rod 22 to flip upward to complete the recovery of the pendulum 26. The release and recovery of the pendulum are both semi-automatically completed by the strength test system 2, with high automation and higher safety, avoiding injury to people by the pendulum 26, high precision, greatly reducing the errors caused by manual operation, and significantly improving the safety of the test process.

[0036] Preferably, the flipping drive 23 is a winch. The cable of the winch is fixed to one end of the recovery rod 22. The recovery rod 22 is driven to flip upward by recovering the cable of the winch, and the recovery rod 22 flips downward when the cable is released.

[0037] Preferably, the decoupling mechanism 25 can be an electric decoupler, and a lifting ring corresponding to the electric decoupler is provided on the pendulum 26. In another alternative embodiment, it can also be an electromagnet to adsorb the pendulum through the electromagnet. Embodiment 2

[0038] Refer to Figure 1 、 Figure 2 and Figure 3 , on the basis of Embodiment 1, a first adjustment system for adjusting the horizontal and vertical positions of the strength test system 2 is provided on the main support system 1; the first adjustment system adjusts the relative position of the strength test system 2, and the second adjustment system adjusts the position of the elevator landing door to be tested, so as to meet the test requirements of elevator landing doors of various different specifications, and the applicability is stronger.

[0039] Refer to Figure 4The first adjustment system includes a first driving mechanism 24 of the test system arranged horizontally, the first driving mechanism 24 of the test system is connected to the mounting seat 21 and is used to drive the mounting seat 21 to translate in a direction away from or close to the floor door mounting portion 11, and the first adjustment system also includes a second driving mechanism 27 of the test system arranged horizontally, the driving direction of the second driving mechanism 27 of the test system is perpendicular to the driving direction of the first driving mechanism 24 of the test system. The first driving mechanism 24 of the test system and the second driving mechanism 27 of the test system can cooperate to control the mounting seat 21 to complete the displacement in all horizontal directions, thereby adjusting the position of the mounting seat 21 and the pendulum 26 fixed thereon, meeting various detection requirements, and making position adjustment more convenient.

[0040] See also Figure 1 , Figure 4 The first adjustment system further includes a third driving mechanism 28 of the testing system vertically arranged on the main support system 1, and the third driving mechanism 28 of the testing system is used to drive the strength testing system 2 to vertically rise and fall along the main support system 1. The third driving mechanism 28 of the testing system can adjust the height of the pendulum 26 to meet the detection requirements of elevator door layers of different heights and increase the scope of application. Embodiment 3

[0041] See also Figures 1-6 On the basis of the first embodiment, a strength test loading and feedback device 3 for cooperating with the elevator floor door to be tested is provided near the floor door installation portion 11, and the strength test loading and feedback device 3 includes a loading and feedback device platform 31, a loading and feedback transverse movement mechanism 32 for driving the loading and feedback device platform 31 to move laterally along the elevator floor door to be tested, and a linear push rod 33 arranged on the loading and feedback device platform 31, and a force sensor 34 for cooperating with the elevator floor door to be tested is provided on the arm of the linear push rod 33, and the linear push rod 33 is arranged toward the elevator floor door to be tested and is used to drive the force sensor 34 to translate in a direction away from or close to the elevator floor door to be tested. In this embodiment, the static test can be completed by cooperating with the linear push rod 33 and the force sensor 34. The linear push rod 33 drives the force sensor 34 to press on the surface of the elevator floor door to test whether the elevator floor door meets the requirements under the action of static force. The linear push rod 33 and the force sensor 34 can be driven to move horizontally along the elevator floor door through the loading and feedback transverse movement mechanism 32, so as to detect different positions of the elevator floor door and meet the multi-point testing requirements.

[0042] See also Figure 5 , Figure 6There are two loading and feedback device platforms 31, which are respectively arranged on the front and rear sides of the floor door installation part 11. The two loading and feedback device platforms 31 are respectively provided with laser transmitters 35 and laser receivers 36 which are arranged opposite to each other. Specifically, the laser transmitter 35 and the laser receiver 36 cooperate to locate the edge position of the elevator floor door to be tested. When the laser transmitter 35 and the laser receiver 36 are translated toward the elevator floor door to be tested at the same time, the initial signal-free point of the laser receiver 36 is the sample edge of the elevator floor door to be tested. The cooperation of the laser transmitters 35 and the laser receivers 36 on both sides can accurately locate the edge positions of the elevator floor door on each side, which is convenient for the subsequent adjustment of the positions of the test components such as the strength test system 2 and the linear push rod 33, so that it can accurately find the test point.

[0043] See also Figure 5 , Figure 6 The loading and feedback device platform 31 is also provided with a distance sensor 37 which is arranged toward the landing door installation part 11 and relatively parallel to the linear push rod 33. The distance sensor 37 can be used to detect the distance between the landing door to be tested and the elevator. On the one hand, multi-point detection can be performed to determine whether the elevator door is aligned. On the other hand, the detection points can be detected before and after the pendulum impact test and the static test to determine the deformation.

[0044] See also Figure 1 , Figure 5 The strength test loading and feedback device 3 also includes a second lifting platform 310 and a strength test loading and feedback lifting device 311 for driving the second lifting platform 310 to vertically lift along the main support system 1. The loading and feedback device platform 31, the loading and feedback lateral movement mechanism 32, the linear push rod 33, the force sensor 34, and the distance sensor 37 are all arranged on the second lifting platform 310. It is used to adjust the height of each component to meet the detection requirements of different height positions of the elevator door.

[0045] See also Figure 5 , Figure 6 The loading and feedback device platform 31 is provided with a rotating platform 38 and a rotating driver 39 for driving the rotating platform 38 to rotate horizontally, and the linear push rod 33 is arranged on the rotating platform 38. The rotating driver 39 is used to adjust the angles of the linear push rod 33, the laser transmitter 35, the laser receiver 36, the distance sensor 37 and other components so that they can meet the detection requirements.

[0046] Specifically, during the test, the loading and feedback transverse movement mechanism 32 and the strength test loading and feedback lifting device 311 control the displacement of the distance measuring sensor 37 to different positions and measure the distance data between the elevator landing door to be tested at at least four points horizontally and vertically. Based on the data of the distance measuring sensor 37, the spatial position of the elevator landing door to be tested is drawn, the relative angle between the elevator landing door to be tested, the distance measuring sensor 37 and the linear push rod 33 is calculated, and compared with the required angle for the test. The angle X that the linear push rod 33 needs to deflect is calculated, and the rotation driver 39 is controlled according to the value of X to adjust the angle of the rotating platform 38, so that the linear push rod 33 is perpendicular to the elevator landing door to be tested. By adjusting the angle of the rotating platform 38 in this step, the perpendicularity with the elevator landing door sample is ensured.

[0047] Refer to Figure 2 , Figure 3 , the landing door installation part 11 includes a lower landing door fixing frame 111 and an upper landing door fixing frame 112 arranged on the upper side of the lower landing door fixing frame 111. At least two vertically arranged landing door slide rails 113 are further provided on the main support system 1. The upper landing door fixing frame 112 is fixedly arranged on the guide rail slider of the landing door slide rail 113. An upper fixing frame lifting driver 114 for driving the upper landing door fixing frame 112 to lift up and down is further provided on the main support system 1. On the one hand, the upper fixing frame lifting driver 114 can adjust the height of the upper landing door fixing frame 112, and on the other hand, it can be used for testing to apply pressure to the upper side of the elevator landing door and detect the pressure-bearing performance of the elevator door.

[0048] Preferably, the first driving mechanism 24, the second driving mechanism 27, the third driving mechanism 28 of the test system, the loading and feedback transverse movement mechanism 32, and the strength test loading and feedback lifting device 311 are all composed of a combination of several guide rails and linear lead screw structures. Those skilled in the art can select a suitable driving structure according to the actual situation.

[0049] The working process of the present invention: During the working process of the device for testing the mechanical strength of an elevator landing door of the present invention: 1. Install the elevator landing door sample to be tested onto the landing door installation part 11 in place. Since the landing door is installed vertically and is basically perpendicular to the ground; the zero point in the vertical direction of the bottom installation surface. 2. According to the relevant information of the landing door, calculate the test points of the landing door, and use the first adjustment system to move the pendulum 26 of the strength test device 2 to the same horizontal plane as the test points. 3. Align the zero point of the strength test loading and feedback device 3, perform zero point calibration using the laser generator 35 and the laser receiver 36, and reset the zero point position. 4. Control the platforms 31 of the loading and feedback devices on both sides to move towards the landing door sample simultaneously. The starting point without signal of the laser receiver 36 is the edge of the landing door sample, which serves as the starting point for calculating the test points. 5. Control the platforms 31 of the loading and feedback devices on both sides to reach the test point positions. Use the distance measuring sensors to collect data of at least 4 points horizontally and vertically at the test point, draw the spatial positions of the test areas of the landing door samples, compare them with the theoretical positions, and calculate the angle X that the rotating platforms 38 need to deflect. 6. Simultaneously deflect the rotating platforms 38 on both sides by the angle X to ensure perpendicularity to the landing door sample. 7. Drive the linear push rod 33 to extend its push rod axially towards the landing door for mechanical strength testing, and then use the distance measuring sensor 39 to collect data for static testing. 8. Withdraw the strength testing loading and feedback device 3, adjust the position of the pendulum 26, start the first driving mechanism 24 of the testing system, and make the distance between the pendulum 26 and the landing door 15 ± 10 mm; place the distance measuring sensor 37 directly behind the impact point of the pendulum. 9. Lift the pendulum. After reaching the specified height, trigger the unhooking mechanism 25 to conduct a pendulum impact test, and use the feedback device to record the data during the impact process and the final protruding data of the landing door.

[0050] The standard parts used in this application document can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The electric slide rail sliders, cylinders, welding machines, electric telescopic rods, and internal components of the controller all adopt conventional models in the prior art, and their internal structures belong to the prior art structures. Workers can complete their normal operations according to the prior art manuals. Coupled with the circuit connections adopting conventional connection methods in the prior art, no specific description will be made here.

[0051] It should be noted that although the above-mentioned embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, any changes and modifications made to the embodiments described in this article, or equivalent structural or equivalent process transformations made using the content of the specification and drawings of the present invention, and directly or indirectly applying the above technical solutions to other related technical fields, are all included in the protection scope of the present invention patent.

Claims

1. A device for testing the mechanical strength of elevator landing doors, comprising a main support system (1), characterized in that: The main support system (1) is provided with a floor door mounting portion (11) for fixing the floor door of the elevator to be tested and a strength testing system (2) corresponding to the floor door mounting portion (11), the strength testing system (2) comprising a pendulum (26), the pendulum (26) being arranged at a position corresponding to the floor door mounting portion (11), and the strength testing system (2) being used to fix and release the pendulum (26) at a required test position; The main support system (1) is provided with a first adjustment system for adjusting the horizontal and vertical positions of the strength testing system (2); A strength test loading and feedback device (3) for cooperating with the elevator floor door to be tested is provided near the floor door installation portion (11), the strength test loading and feedback device (3) comprising a loading and feedback device platform (31), a loading and feedback lateral movement mechanism (32) for driving the loading and feedback device platform (31) to move laterally along the elevator floor door to be tested, and a linear push rod (33) provided on the loading and feedback device platform (31), a force sensor (34) for cooperating with the elevator floor door to be tested being provided on the rod arm of the linear push rod (33), the linear push rod (33) being arranged toward the elevator floor door to be tested and being used to drive the force sensor (34) to move in a direction away from or close to the elevator floor door to be tested.

2. The device for testing the mechanical strength of elevator landing doors according to claim 1, characterized in that: The strength testing system (2) comprises a mounting seat (21), a recovery rod (22), and a flip driver (23); the upper end of the pendulum (26) is fixed to the mounting seat (21) via a connecting rope; one end of the recovery rod (22) is hingedly connected to the mounting seat (21), and the other end is provided with a decoupling mechanism (25) for cooperating with the pendulum (26); the flip driver (23) is used to drive the recovery rod (22) to flip around a hinged position so that the decoupling mechanism (25) can flip to a position where the pendulum (26) is in a free-falling state, and to drive the pendulum (26) to flip to a required test position via the decoupling mechanism (25).

3. The device for testing the mechanical strength of elevator landing doors according to claim 2, characterized in that: The first adjustment system comprises a first test system drive mechanism (24) arranged transversely, the first test system drive mechanism (24) being connected to the mounting seat (21) and being used to drive the mounting seat (21) to translate in a direction away from or close to the landing door mounting portion (11), and the first adjustment system further comprises a second test system drive mechanism (27) arranged transversely, the driving direction of the second test system drive mechanism (27) being perpendicular to the driving direction of the first test system drive mechanism (24).

4. The device for testing the mechanical strength of elevator landing doors according to claim 3, characterized in that: The first adjustment system further comprises a test system third drive mechanism (28) vertically arranged on the main support system (1), the test system third drive mechanism (28) being used to drive the strength test system (2) to vertically rise and fall along the main support system (1).

5. The device for testing the mechanical strength of elevator landing doors according to claim 1, characterized in that: There are two loading and feedback device platforms (31), which are respectively arranged at the front and rear sides of the landing door installation portion (11), and the two loading and feedback device platforms (31) are respectively provided with a laser transmitter (35) and a laser receiver (36) which are arranged opposite to each other; The laser transmitter (35) and the laser receiver (36) cooperate to locate the edge position of the elevator floor door to be tested. When the laser transmitter (35) and the laser receiver (36) are simultaneously translated toward the elevator floor door to be tested, the initial signal-free point of the laser receiver (36) is the sample edge of the elevator floor door to be tested.

6. The device for testing the mechanical strength of elevator landing doors according to claim 1, characterized in that: The loading and feedback device platform (31) is also provided with a distance measuring sensor (37) which is arranged towards the landing door mounting portion (11) and relatively parallel to the linear push rod (33).

7. A device for testing the mechanical strength of elevator landing doors as claimed in claim 6, characterized in that: The strength test loading and feedback device (3) further comprises a second lifting platform (310) and a strength test loading and feedback lifting device (311) for driving the second lifting platform (310) to vertically lift and lower the main support system (1); the loading and feedback device platform (31), the loading and feedback transverse movement mechanism (32), the linear push rod (33), the force sensor (34), and the distance measuring sensor (37) are all arranged on the second lifting platform (310).

8. The device for testing the mechanical strength of elevator landing doors as claimed in claim 7, characterized in that: A rotating platform (38) and a rotating driver (39) for driving the rotating platform (38) to rotate horizontally are provided on the loading and feedback device platform (31), and the linear push rod (33) is provided on the rotating platform (38).

9. The device for testing the mechanical strength of elevator landing doors according to claim 8, characterized in that: During the test, the loading and feedback transverse movement mechanism (32) and the strength test loading and feedback lifting device (311) control the distance sensor (37) to move to different positions and obtain the distance data between the distance sensor (37) and the elevator floor door to be tested at at least four points in the horizontal and vertical directions. The spatial position of the elevator floor door to be tested is plotted based on the distance sensor (37) data. The relative angle between the elevator floor door to be tested and the distance sensor (37) and the linear push rod (33) is calculated and compared with the angle required for the test. The angle X required for the linear push rod (33) to be deflected is calculated. The rotary drive (39) is controlled to adjust the angle of the rotary platform (38) based on the value of X so that the linear push rod (33) is perpendicular to the elevator floor door to be tested.

10. The device for testing the mechanical strength of elevator landing doors according to claim 1, characterized in that: The floor door installation portion (11) comprises a floor door lower fixing frame (111) and a floor door upper fixing frame (112) arranged on the upper side of the floor door lower fixing frame (111); the main support system (1) is also provided with at least two vertically arranged floor door slide rails (113); the floor door upper fixing frame (112) is fixedly arranged on a guide rail slider of the floor door slide rail (113); and the main support system (1) is also provided with an upper fixing frame lifting driver (114) for driving the floor door upper fixing frame (112) to lift up and down.

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