An elevator landing door strength testing device

Abstract

The present invention belongs to the technical field of elevator detection, and specifically provides an elevator floor door strength detection device, including a main chassis, a floor door adjustment and fixing component, an angle adjustment component, an impact component, a detection elevator floor door and a main controller. The impact component can apply external force to the detection elevator floor door, and drive the control cylinder to move by impacting the electric push rod, and the force storage spring contracts to store deformation energy. At the same time, the push rod is adjusted to push the control sliding block downward, so that the blocking right-angle triangle block is separated from the limiting effect on the blocking truncated table. The impact rod applies impact to the detection elevator floor door under the elastic action of the force storage spring. The structure is compact, and a lot of space is saved compared to traditional pendulum tools. The position of the push arm is controlled and adjusted to change the contraction amount of the force storage spring, so as to adjust the impact force of the impact head.

Description

Technical Field

[0001] The invention belongs to the technical field of elevator detection, and in particular refers to an elevator floor door strength detection device. Background Art

[0002] Elevator floor doors are doors installed at the entrance of the elevator shaft, also known as hall doors. They are used to separate the elevator shaft from the elevator lobby to prevent people or objects from entering the shaft without permission. The strength test of elevator floor doors is a key link in the evaluation of elevator safety performance. Its purpose is to ensure that the floor doors can maintain sufficient strength and stability when subjected to external forces to ensure the safety of passengers and elevator equipment.

[0003] The existing elevator floor door strength test mainly fixes the position of the elevator floor door and applies external force to the surface of the elevator floor door. According to the deformation of the elevator floor door, it is judged whether the elevator floor door meets the strength requirements. However, the device for fixing the elevator floor door is not the installation component of the elevator floor door in real situation. Its detection process cannot reflect the actual use status of the elevator floor door, and cannot detect the connection strength between the elevator floor door and the sill and the upper sill, as well as the locking strength of the door leaf. At present, the most commonly used and simple method in the elevator floor door strength test is to use a pendulum to perform an impact test on the elevator floor door to detect the depth of the elevator floor door under a certain impact force. If the required impact force is to be obtained, the pendulum needs to be placed at a higher position, which will take up a large space, and the impact force of the pendulum is difficult to control, and data quantification cannot be achieved. The external force applied in the existing elevator floor door strength test is generally perpendicular to the surface of the elevator floor door, but in reality, the direction of the external force on the elevator floor door is complex and diverse, and the existing elevator floor door strength test lacks consideration of the forces on the surface of the elevator floor door in other directions.

[0004] Therefore, it is necessary to propose an elevator floor door strength detection device to solve the problems existing in the existing elevator floor door strength detection process. Summary of the invention

[0005] In order to solve the above-mentioned existing problems, the present invention provides an elevator floor door strength testing device. The impact component can apply external force to the elevator floor door to be tested, and the control cylinder is driven to move by impacting the electric push rod. The storage spring contracts to store deformation energy, and at the same time, the push rod is adjusted to push the control sliding block downward, so that the blocking right-angle triangle block is separated from the limiting effect on the blocking round table. The impact rod applies impact to the elevator floor door to be tested under the elastic action of the storage spring. The structure is compact and saves a lot of space compared with traditional pendulum tools. The position of the push arm is controlled and adjusted to change the contraction amount of the storage spring. The impact force of the impact head is adjusted; the inspection elevator floor door is firmly fixed by setting the floor door adjustment and fixing assembly, and the rotation of the inspection elevator floor door is realized by the rotating disk, so that the front and back sides of the inspection elevator floor door can be tested for strength through the impact assembly; the movable upper sill frame can move up and down, so as to realize the fixation of the inspection elevator floor doors of different heights, and the upper and lower sides of the inspection elevator floor door are respectively installed on the door hanging plate and the floor door installation sill. The door hanging plate and the floor door installation sill can be selected from different specifications according to the actual situation, so that the inspection conditions of the inspection elevator floor door meet the actual situation.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention provides an elevator floor door strength detection device, including a main chassis, one side of the main chassis is provided with a front and rear guide rail, the upper wall of the main chassis is rotatably provided with a rotating disk, the upper wall of the rotating disk is provided with a floor door adjustment and fixing component, the upper part of the front and rear guide rails is provided with an angle adjustment component that slides back and forth, the side of the angle adjustment component close to the floor door adjustment and fixing component is movably provided with an impact component, the floor door adjustment and fixing component is provided with an elevator floor door for detection, and one side of the main chassis is provided with a main controller.

[0007] Among them, the impact assembly includes a fixed outer cylinder, an auxiliary shell and a second lifting block. The fixed outer cylinder slides up and down and is arranged on the side of the angle adjustment assembly close to the floor door adjustment fixed assembly. The auxiliary shell is arranged on the side wall of the fixed outer cylinder. The fixed outer cylinder is connected to the inside of the auxiliary shell. The second lifting block is arranged on the side of the fixed outer cylinder close to the angle adjustment assembly.

[0008] Furthermore, the fixed outer cylinder is provided with an impact electric push rod, a control cylinder, an impact rod and a force storage spring, the impact electric push rod is arranged at one end of the fixed outer cylinder close to the second lifting block, the control cylinder is arranged on the side of the impact electric push rod away from the second lifting block, the side wall of the control cylinder is in contact with the inner wall of the fixed outer cylinder, the output end of the impact electric push rod is connected to the control cylinder, the impact rod is arranged on the side of the control cylinder away from the impact electric push rod, the end of the impact rod close to the control cylinder passes through the end face of the control cylinder, the end of the impact rod close to the control cylinder is provided with a limit plate, the limit plate is arranged in the control cylinder, the limit plate touches the end face of the control cylinder close to the side of the impact rod, the end of the impact rod away from the control cylinder passes through the end face of the fixed outer cylinder, the side wall of the impact rod is provided with a blocking cone, the bottom edge of the blocking cone touches the inner wall of the fixed outer cylinder, and the force storage spring is connected between the top surface of the blocking cone and the end face of the control cylinder.

[0009] Furthermore, a sliding control block and an adjusting push arm are provided in the auxiliary shell. The sliding control block is provided at one end of the auxiliary shell away from the impact electric push rod, and the adjusting push arm is provided on the side of the sliding control block close to the impact electric push rod. A control slope is embedded in the side wall of the sliding control block close to the adjusting push arm, and a blocking right-angled triangle block is provided on the side wall of the sliding control block close to the impact rod, and the right-angled surface of the blocking right-angled triangle block is in contact with the bottom surface of the blocking cone.

[0010] Furthermore, an impact head is provided at one end of the impact rod away from the control cylinder, and the impact head is arranged outside the fixed outer cylinder, a pressure sensor is provided between the impact head and the impact rod, a fourth screw is rotatably provided at one end of the side wall of the control cylinder close to the auxiliary shell, a fourth motor is provided at the end of the fourth screw, and the output end of the fourth motor is connected to the end of the fourth screw, one end of the adjusting push arm away from the sliding control block is sleeved on the side wall of the fourth screw, the end of the adjusting push arm is threadedly connected to the fourth screw, the side wall of the end of the adjusting push arm close to the sliding control block is slidably arranged in contact with the control inclined surface, a reset spring is connected between the side wall of the sliding control block away from the impact rod and the inner wall of the auxiliary shell, and the side wall of the sliding control block away from the adjusting push arm is snap-fitted and slidably arranged on the inner wall of the auxiliary shell.

[0011] Furthermore, when the end of the adjusting push arm close to the sliding control block is located at the bottom of the control slope, the end of the blocking right-angle triangle block contacts the side wall of the impact rod; when the end of the adjusting push arm close to the sliding control block is located at the top of the control slope, the end of the blocking right-angle triangle block is disengaged from the edge of the blocking cone.

[0012] Furthermore, the angle adjustment assembly includes a guide rail slider, an angle adjustment bottom ring and a lifting assembly, the guide rail slider is snap-fitted and slidably arranged in the front and rear guide rails, the angle adjustment bottom ring is arranged on the upper wall of the guide rail slider, the angle adjustment bottom ring is arc-shaped, the upper wall of the angle adjustment bottom ring is provided with angle adjustment teeth, the upper wall of the angle adjustment teeth is provided with an angle adjustment guide rail, the lifting assembly is movably arranged on the upper wall of the angle adjustment guide rail, the lower walls of the left and right ends of the angle adjustment bottom ring are symmetrically provided with moving seats, and the lower wall of the moving seat is evenly embedded with universal balls for rolling; when the angle adjustment assembly moves to one end of the front and rear guide rails close to the floor door adjustment fixed assembly, the center of the arc of the angle adjustment bottom ring coincides with the center of the rotating disk.

[0013] Furthermore, the lifting assembly includes an angle adjustment guide plate and a lifting guide rail, the angle adjustment guide plate is movably arranged on the upper wall of the angle adjustment guide rail, the lifting guide rail is arranged at one end of the angle adjustment guide plate close to the floor door adjustment fixed assembly, the lower wall array of the angle adjustment guide plate is provided with an angle adjustment roller, the angle adjustment rollers are respectively engaged and rollingly arranged on the side walls of the angle adjustment guide rail, the lower wall of the angle adjustment guide plate is rotatably provided with an angle adjustment gear, the angle adjustment gear is meshed with the angle adjustment teeth, a gear motor is provided at the rotating shaft of the angle adjustment gear, the output end of the gear motor is connected to the rotating shaft of the angle adjustment gear, a third screw rod is rotatably provided in the lifting guide rail, a third motor is provided at the upper end of the third screw rod, the output end of the third motor is connected to the end of the third screw rod, the second lifting block is sleeved on the side wall of the third screw rod, and the second lifting block is threadedly connected to the third screw rod.

[0014] Further, the floor door adjustment and fixing assembly comprises a fixed frame, a first screw rod and an adjusting slide rod, the fixed frame is fixedly arranged at the middle position of the upper wall of the rotating disk, the first screw rod and the adjusting slide rod are symmetrically arranged at the left and right ends of the fixed frame, the upper end of the first screw rod is provided with a first motor, the output end of the first motor is connected to the end of the first screw rod, a floor door mounting sill is provided just below the fixed frame, the floor door mounting sill is fixedly arranged at the middle position of the upper wall of the rotating disk, a movable upper sill frame is provided between the fixed frame and the floor door mounting sill for sliding up and down, and first lifting blocks are symmetrically arranged at the left and right ends of the movable upper sill frame, the first lifting blocks are respectively sleeved on the side walls of the first screw rod and the adjusting slide rod, the first lifting block is threadedly connected to the first screw rod, a lower guide rail is provided at the lower end of the side wall of the movable upper sill frame, a door hanging plate is clamped and slidably provided on the lower guide rail, the upper end edge of the detection elevator floor door is fixed to the lower end of the door hanging plate, the lower end of the detection elevator floor door is evenly provided with door sliding blocks, and the door sliding blocks are clamped and slid in the floor door mounting sill.

[0015] Furthermore, a rotating motor is provided on one side edge of the main chassis, a rotating gear is provided on the output end of the rotating motor, rotating gear teeth are provided on the edge of the rotating disk, the rotating gear is meshed with the rotating gear teeth, a second screw rod is provided in the front and rear guide rails, a second motor is provided at the end of the second screw rod, the output end of the second motor is connected to the end of the second screw rod, a deformation detection guard plate is provided at one end of the upper wall of the main chassis, the deformation detection guard plate is provided on the side of the floor door adjustment and fixing assembly away from the angle adjustment assembly, the deformation detection guard plate includes a sensor support plate and an anti-collision pad, the sensor support plate is provided on one end of the upper wall of the main chassis, the anti-collision pad covers the side wall of the sensor support plate close to the floor door adjustment and fixing assembly, the side wall of the sensor support plate close to the floor door adjustment and fixing assembly is evenly provided with sensing grooves, and a high-precision infrared rangefinder is provided in the sensing grooves.

[0016] Furthermore, the rotating motor, the second motor, the high-precision infrared rangefinder, the first motor, the gear motor, the third motor, the impact electric push rod, the fourth motor and the pressure sensor are electrically connected to the main controller respectively.

[0017] Furthermore, the model of the main controller is Siemens S7-1200.

[0018] The beneficial effects achieved by the present invention using the above structure are:

[0019] (1) The impact assembly can apply external force to the elevator door to be inspected. By impacting the electric push rod, the control cylinder is driven to move, the storage spring contracts, and the deformation energy is stored. At the same time, the push arm is adjusted to push the sliding control block downward, so that the blocking right-angle triangle block is separated from the limiting effect on the blocking round table. The impact rod exerts an impact on the elevator door to be inspected under the elastic action of the storage spring. The structure is compact and saves a lot of space compared with traditional pendulum tools.

[0020] (2) The fourth motor drives the fourth screw rod to rotate, thereby moving the adjustment push arm. The distance between the sliding control block and the impact rod is controlled by adjusting the position of the adjustment push arm, thereby changing the contact surface size between the blocking right-angle triangle block and the blocking truncated cone. When the impact electric push rod drives the control cylinder to move, the impact rod can be ejected under different contraction amounts of the storage spring, thereby applying different impact forces to the surface of the elevator door to be tested, thereby adjusting the impact force of the impact head and facilitating the acquisition of more detection data under impact force conditions;

[0021] (3) By setting an angle adjustment component and using a lifting component to adjust the height of the impact component, the impact component can apply impact force to the surface of the elevator door at different heights. At the same time, the direction of the impact component is adjusted by rotating the angle adjustment guide plate, so that the impact head applies impact force at different angles to the elevator door, making the detection results richer and more in line with the changing conditions of the elevator in actual use;

[0022] (4) By setting up a floor door adjustment and fixing component, the floor door of the test elevator is firmly fixed, and the rotation of the floor door of the test elevator is achieved through a rotating disk, so that both the front and back sides of the floor door of the test elevator can be tested for strength through the impact component;

[0023] (5) The movable upper sill frame can move up and down, so as to realize the fixing of the detection elevator floor doors of different heights. The upper and lower sides of the detection elevator floor doors are respectively installed on the door hanging plate and the floor door installation sill. The door hanging plate and the floor door installation sill can be selected in different specifications according to the actual situation, so that the detection conditions of the detection elevator floor doors meet the actual situation. By changing the position of the door hanging plate to change the horizontal position of the detection elevator floor door, the impact component can apply impact force to the surface of the detection elevator floor door at different positions in the horizontal direction;

[0024] (6) When the impact component exerts an impact force on the inspection elevator floor door, it may cause the inspection elevator floor door to detach from the floor door installation sill and door hanging plate. In serious cases, the inspection elevator floor door may pop out a long distance. The deformation detection protective plate can prevent the inspection elevator floor door from hitting other people when it pops out, causing injuries;

[0025] (7) Sensing grooves are evenly arranged in the deformation detection protection plate, and high-precision infrared rangefinders are built into the sensing grooves. The evenly arranged high-precision infrared rangefinders can monitor the deformation of the elevator floor doors. The sensing grooves can provide protection for the high-precision infrared rangefinders to prevent the elevator floor doors from being damaged by the impact and flying away. The anti-collision pads can reduce the impact damage to the elevator floor doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of an elevator door strength detection device provided by the present invention;

[0027] Figure 2 A schematic diagram of the structure of the main chassis, rotating disk, front and rear guide rails, angle adjustment bottom ring and fixing frame;

[0028] Figure 3 A schematic diagram of the connection structure of the landing door adjustment fixing assembly and the detection elevator landing door;

[0029] Figure 4 is a schematic diagram of the structure of the lifting assembly;

[0030] Figure 5 It is a schematic diagram of the connection structure of the lifting assembly, the angle adjustment guide rail and the angle adjustment teeth;

[0031] Figure 6 is a schematic diagram of the internal structure of the impact component;

[0032] Figure 7is a schematic cross-sectional structural diagram of an impact assembly;

[0033] Figure 8 It is a structural schematic diagram of a deformation detection protection plate;

[0034] Fig. 9 It is a cross-sectional view of the sensing slot and the high-precision infrared rangefinder;

[0035] Fig.10 It is a schematic diagram of the bottom structure of the guide rail slider, angle adjustment bottom ring and movable seat.

[0036] Among them, 1. Main chassis, 11. Rotating plate, 111. Rotating motor, 12. Front and rear guide rails, 121. Second screw rod, 122. Second motor, 13. Deformation detection protection plate, 131. Sensor support plate, 1311. Sensor slot, 132. Anti-collision pad, 133. High-precision infrared rangefinder, 2. Floor door adjustment fixing assembly, 21. Fixed frame, 22. First screw rod, 221. First motor, 23. Adjustment slide bar, 24. Floor door installation sill, 25. Mobile upper sill frame, 251. First lifting block, 252. Lower guide rail, 26. Door hanging plate, 3. Angle adjustment assembly, 31. Guide rail slider, 32. Angle adjustment bottom ring, 321. Angle adjustment teeth, 322. Angle adjustment guide rail, 323. Moving seat, 3231. Universal ball, 33. Lifting assembly, 331 , angle adjustment guide plate, 3311, angle adjustment roller, 3312, angle adjustment gear, 3313, gear motor, 332, lifting guide rail, 333, third screw rod, 334, third motor, 4, impact assembly, 41, fixed outer cylinder, 411, impact electric push rod, 412, control cylinder, 4121, fourth screw rod, 4122, fourth motor, 413, impact rod, 4131, blocking round table, 4132, limit plate, 414, storage spring, 415, impact head, 416, pressure sensor, 42, auxiliary shell, 421, sliding control block, 4211, control slope, 4212, blocking right-angle triangle block, 4213, reset spring, 422, adjustment push arm, 43, second lifting block, 5, detection of elevator floor door, 51, door slider, 6, main controller. DETAILED DESCRIPTION

[0037] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments. The parts of the technical features or connection relationships described in the present invention that are not described in detail are all existing technologies adopted.

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0039] like Figure 1As shown, an elevator floor door strength detection device provided by the present invention comprises a main chassis 1, a floor door adjustment and fixing component 2, an angle adjustment component 3, an impact component 4, a detection elevator floor door 5 and a main controller 6. A front and rear guide rail 12 is provided on one side of the main chassis 1, a rotating disk 11 is rotatably provided on the upper wall of the main chassis 1, the floor door adjustment and fixing component 2 is arranged on the upper wall of the rotating disk 11, the angle adjustment component 3 is slidably arranged above the front and rear guide rails 12, the impact component 4 is movably arranged on one side of the angle adjustment component 3 close to the floor door adjustment and fixing component 2, the detection elevator floor door 5 is arranged in the floor door adjustment and fixing component 2, and the main controller 6 is arranged on one side of the main chassis 1.

[0040] like Figure 2 , Figure 8 and Fig. 9 As shown, a rotating motor 111 is provided at one side edge of the main chassis 1, a rotating gear (not shown in the drawings) is provided at the output end of the rotating motor 111, a rotating gear (not shown in the drawings) is provided at the edge of the rotating disk 11, the rotating gear is meshed with the rotating gear, a second screw rod 121 is provided in the front and rear guide rails 12, a second motor 122 is provided at the end of the second screw rod 121, the output end of the second motor 122 is connected to the end of the second screw rod 121, a deformation detection protective plate 13 is provided at one end of the upper wall of the main chassis 1, and a deformation detection protective plate 13 is provided at one end of the upper wall of the main chassis 1. The protective plate 13 is arranged on the side of the floor door adjustment fixing component 2 away from the angle adjustment component 3. The deformation detection protective plate 13 includes a sensor support plate 131 and an anti-collision pad 132. The sensor support plate 131 is arranged at one end of the upper wall of the main chassis 1. The anti-collision pad 132 covers the side wall of the sensor support plate 131 close to the floor door adjustment fixing component 2. The side wall of the sensor support plate 131 close to the floor door adjustment fixing component 2 is evenly provided with sensing grooves 1311, and a high-precision infrared rangefinder 133 is arranged in the sensing groove 1311.

[0041] like Figure 2 and Figure 3As shown, the floor door adjustment fixing assembly 2 includes a fixing frame 21, a first screw rod 22 and an adjusting slide rod 23. The fixing frame 21 is fixedly arranged at the middle position of the upper wall of the rotating disk 11. The first screw rod 22 and the adjusting slide rod 23 are symmetrically arranged at the left and right ends of the fixing frame 21. The upper end of the first screw rod 22 is provided with a first motor 221. The output end of the first motor 221 is connected to the end of the first screw rod 22. A floor door installation sill 24 is provided directly below the fixing frame 21. The floor door installation sill 24 is fixedly arranged at the middle position of the upper wall of the rotating disk 11. The fixing frame 21 and the floor door installation sill 24 slide up and down. A movable upper sill frame 25 is provided, and first lifting blocks 251 are symmetrically provided at the left and right ends of the movable upper sill frame 25. The first lifting blocks 251 are respectively sleeved on the side walls of the first screw rod 22 and the adjusting slide rod 23. The first lifting blocks 251 are threadedly connected with the first screw rod 22. A lower guide rail 252 is provided at the lower end of the side wall of the movable upper sill frame 25. A door hanging plate 26 is slidably engaged on the lower guide rail 252. The upper end edge of the detection elevator floor door 5 is fixed to the lower end of the door hanging plate 26. The lower end of the detection elevator floor door 5 is evenly provided with door sliders 51, which are engaged and slid in the floor door installation sill 24.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.10 As shown, the angle adjustment component 3 includes a guide rail slider 31, an angle adjustment bottom ring 32 and a lifting component 33. The guide rail slider 31 is slidably arranged in the front and rear guide rails 12, the angle adjustment bottom ring 32 is arranged on the upper wall of the guide rail slider 31, the angle adjustment bottom ring 32 is arc-shaped, the upper wall of the angle adjustment bottom ring 32 is provided with angle adjustment teeth 321, the upper wall of the angle adjustment teeth 321 is provided with an angle adjustment guide rail 322, the lifting component 33 is movably arranged on the upper wall of the angle adjustment guide rail 322, the lower walls of the left and right ends of the angle adjustment bottom ring 32 are symmetrically provided with moving seats 323, and the lower wall of the moving seat 323 is evenly embedded with a universal ball 3231 for rolling;

[0043] When the angle adjustment assembly 3 moves to one end of the front and rear guide rails 12 close to the floor door adjustment fixing assembly 2, the center of the arc of the angle adjustment bottom ring 32 coincides with the center of the rotating disk 11;

[0044] The lifting assembly 33 includes an angle adjustment guide plate 331 and a lifting guide rail 332. The angle adjustment guide plate 331 is movably arranged on the upper wall of the angle adjustment guide rail 322. The lifting guide rail 332 is arranged at one end of the angle adjustment guide plate 331 close to the floor door adjustment fixing assembly 2. The lower wall array of the angle adjustment guide plate 331 is provided with angle adjustment rollers 3311. The angle adjustment rollers 3311 are respectively engaged and rolled on the side walls of the angle adjustment guide rail 322. The lower wall of the angle adjustment guide plate 331 is rotatably provided with an angle adjustment gear 3312. The angle adjustment gear 3312 is meshed with the angle adjustment teeth 321. A gear motor 3313 is provided at the rotating shaft of the angle adjustment gear 3312. The output end of the gear motor 3313 is connected to the rotating shaft of the angle adjustment gear 3312. A third screw rod 333 is rotatably provided in the lifting guide rail 332. A third motor 334 is provided at the upper end of the third screw rod 333. The output end of the third motor 334 is connected to the end of the third screw rod 333.

[0045] like Figure 6 and Figure 7 As shown, the impact assembly 4 includes a fixed outer cylinder 41, an auxiliary shell 42 and a second lifting block 43. The fixed outer cylinder 41 is slidably disposed on a side of the lifting guide rail 332 close to the floor door adjustment fixed assembly 2, the auxiliary shell 42 is disposed on the side wall of the fixed outer cylinder 41, the fixed outer cylinder 41 is connected to the inside of the auxiliary shell 42, the second lifting block 43 is disposed on a side of the fixed outer cylinder 41 close to the angle adjustment assembly 3, the second lifting block 43 is sleeved on the side wall of the third screw rod 333, and the second lifting block 43 is threadedly connected to the third screw rod 333;

[0046] An impact electric push rod 411, a control cylinder 412, an impact rod 413 and a force storage spring 414 are arranged in the fixed outer cylinder 41. The impact electric push rod 411 is arranged at one end of the fixed outer cylinder 41 close to the second lifting block 43, the control cylinder 412 is arranged on the side of the impact electric push rod 411 away from the second lifting block 43, the side wall of the control cylinder 412 is in contact with the inner wall of the fixed outer cylinder 41, the output end of the impact electric push rod 411 is connected to the control cylinder 412, the impact rod 413 is arranged on the side of the control cylinder 412 away from the impact electric push rod 411, and the end of the impact rod 413 close to the control cylinder 412 penetrates the control cylinder 41 2, a limiting plate 4132 is provided at one end of the impact rod 413 close to the control cylinder 412, the limiting plate 4132 is arranged in the control cylinder 412, the limiting plate 4132 is in contact with the end surface of the control cylinder 412 close to the impact rod 413, the end of the impact rod 413 away from the control cylinder 412 passes through the end surface of the fixed outer cylinder 41, a blocking cone 4131 is provided on the side wall of the impact rod 413, the bottom edge of the blocking cone 4131 is in contact with the inner wall of the fixed outer cylinder 41, and the storage spring 414 is connected between the top surface of the blocking cone 4131 and the end surface of the control cylinder 412;

[0047] A sliding control block 421 and an adjusting push arm 422 are provided in the auxiliary housing 42. The sliding control block 421 is provided at one end of the auxiliary housing 42 away from the impact electric push rod 411. The adjusting push arm 422 is provided at a side of the sliding control block 421 close to the impact electric push rod 411. A control inclined surface 4211 is embedded in the side wall of the sliding control block 421 close to the adjusting push arm 422. A blocking right-angled triangle block 4212 is provided on the side wall of the sliding control block 421 close to the impact rod 413. The right-angled surface of the blocking right-angled triangle block 4212 is in contact with the bottom surface of the blocking truncated cone 4131.

[0048] An impact head 415 is provided at one end of the impact rod 413 away from the control cylinder 412. The impact head 415 is provided outside the fixed outer cylinder 41. A pressure sensor 416 is provided between the impact head 415 and the impact rod 413. A fourth screw rod 4121 is rotatably provided at one end of the side wall of the control cylinder 412 close to the auxiliary housing 42. A fourth motor 4122 is provided at the end of the fourth screw rod 4121. The output end of the fourth motor 4122 is connected to the end of the fourth screw rod 4121. The adjusting push arm 422 is away from the sliding control One end of the block 421 is sleeved on the side wall of the fourth screw rod 4121, the end of the adjusting push arm 422 is threadedly connected to the fourth screw rod 4121, the side wall of one end of the adjusting push arm 422 close to the sliding control block 421 is slidably arranged in contact with the control inclined surface 4211, a return spring 4213 is connected between the side wall of the sliding control block 421 away from the impact rod 413 and the inner wall of the auxiliary housing 42, and the side wall of the sliding control block 421 away from the adjusting push arm 422 is slidably arranged in contact with the inner wall of the auxiliary housing 42;

[0049] When the end of the adjusting push arm 422 close to the sliding control block 421 is located at the bottom of the control slope 4211, the end of the blocking right-angle triangle block 4212 contacts the side wall of the impact rod 413. When the end of the adjusting push arm 422 close to the sliding control block 421 is located at the top of the control slope 4211, the end of the blocking right-angle triangle block 4212 is disengaged from the edge of the blocking cone 4131.

[0050] like Figure 1-Figure 10 As shown, the rotating motor 111, the second motor 122, the high-precision infrared rangefinder 133, the first motor 221, the gear motor 3313, the third motor 334, the impact electric push rod 411, the fourth motor 4122 and the pressure sensor 416 are electrically connected to the main controller 6 respectively.

[0051] Working principle and workflow:

[0052] The inspector first needs to adjust the height of the movable upper sill frame 25 according to the height of the inspection elevator floor door 5, and control the first motor 221 to start and drive the first screw rod 22 to rotate through the main controller 6. The first lifting block 251 moves up and down with the rotation of the first screw rod 22, thereby driving the movable upper sill frame 25 to move up and down, and adjust the movable upper sill frame 25 to a position that meets the height of the inspection elevator floor door 5. The inspector installs the door hanging plate 26 on the lower guide rail 252 on the movable upper sill frame 25, fixes the upper edge of the inspection elevator floor door 5 to the door hanging plate 26 through fixing bolts, and installs the lower edge of the inspection elevator floor door 5 with a fixing bolt. The door slider 51 needs to be installed in the floor door installation sill 24 to complete the installation of the detection elevator floor door 5. The specifications of the movable upper sill frame 25, the door hanging plate 26 and the floor door installation sill 24 can be selected according to the actual situation. Different specifications make the detection of the elevator floor door 5 more in line with the actual state. In the actual use of the elevator, if the connection strength between the elevator floor door and the upper sill and the lower sill does not meet the standard, the elevator floor door may be separated from the upper sill and the lower sill under the action of external force. The separation of the elevator floor door is extremely dangerous and may cause harm to people inside and outside the car. Therefore, it is necessary to test the connection strength of the elevator floor door under actual conditions.

[0053] During the actual use of the elevator, the external force damage to the elevator floor door may come from the side of the car inside the hoistway, and may also come from the side of the elevator lobby outside the hoistway, that is, both sides of the elevator floor door may be damaged by external forces. The inspection personnel determine the inspection surface of the elevator floor door 5 according to the inspection requirements, and control the rotating motor 111 to start through the main controller 6, so that the rotating disk 11 rotates, driving the fixed frame 21 to rotate as a whole, so that the two side surfaces of the inspection elevator floor door 5 are respectively opposite to the impact component 4, thereby realizing the strength inspection process of the two side surfaces of the inspection elevator floor door 5.

[0054] In the initial state, the angle adjustment component 3 is located at the end of the front and rear guide rails 12 away from the floor door adjustment fixed component 2. At this time, the impact component 4 is farthest from the detection elevator floor door 5. In the process of the rotating disk 11 controlling the floor door adjustment fixed component 2 to rotate, the floor door adjustment fixed component 2 will not interfere with the impact component 4. When the detection surface of the detection elevator floor door 5 is confirmed, the floor door adjustment fixed component 2 stops rotating. At this time, the detection personnel controls the second motor 122 to start through the main controller 6, driving the second screw rod 121 to rotate. The guide rail slider 31 moves toward the direction close to the floor door adjustment fixed component 2 under the rotation of the second screw rod 121, so that the angle adjustment component 3 moves to the end of the front and rear guide rails 12 close to the floor door adjustment fixed component 2. At this time, the impact head 415 is located near the surface of the detection elevator floor door 5.

[0055] The inspector controls the impact assembly 4 to apply an impact force to the inspection elevator floor door 5 through the main controller 6. First, the impact electric push rod 411 is started and drives the control cylinder 412 to move toward the direction close to the impact head 415. The impact rod 413 remains stationary under the limitation of the blocking right-angle triangle block 4212, and the storage spring 414 is compressed with the movement of the control cylinder 412 to store the energy of the deformation. At the same time, the end of the push arm 422 close to the sliding control block 421 is adjusted to slide on the control inclined surface 4211 to make the sliding control block 421 descend. When the end of the push arm 422 is adjusted to move to the uppermost end of the control inclined surface 4211, the blocking right-angle triangle block 4212 will descend to disengage from the blocking The impact rod 413 loses the limiting effect of blocking the right-angle triangle block 4212 and pops outward under the elastic action of the force storage spring 414, so that the impact head 415 applies an impact force to the surface of the detection elevator floor door 5. When the impact head 415 contacts the surface of the detection elevator floor door 5, the pressure sensor 416 detects the pressure value applied by the impact head 415 on the detection elevator floor door 5, and converts it into an electrical signal and transmits it to the main controller 6. The detection personnel can know the numerical value of the impact force on the detection elevator floor door 5 based on the pressure data reflected by the main controller 6, which is convenient for statistical analysis. The pressure sensor 416 is a prior art and will not be introduced in detail here.

[0056] The detection elevator floor door 5 may be deformed after being subjected to impact force, and the magnitude of the deformation can be monitored by a high-precision infrared rangefinder 133 evenly arranged in the deformation detection protection plate 13. In the initial state, the high-precision infrared rangefinder 133 obtains the distance between it and the detection elevator floor door 5. When the detection elevator floor door 5 is impacted, the impact point is deformed, which will change the distance between the impact point and the high-precision infrared rangefinder 133. The high-precision infrared rangefinder 133 obtains the changed distance data and transmits it to the main controller 6. The detection personnel can judge whether the detection elevator floor door 5 meets the strength requirements and achieve the deformation monitoring effect of the detection elevator floor door 5.

[0057] Under the impact of the impact head 415, if the detection elevator floor door 5 is separated from the door hanging plate 26 and the floor door installation sill 24, it means that the connection strength between the detection elevator floor door 5 and the door hanging plate 26 and the floor door installation sill 24 does not meet the standard. The inspection personnel will improve the connection structure of the detection elevator floor door 5 to avoid the situation where the detection elevator floor door 5 is separated. When the detection elevator floor door 5 is impacted by the impact head 415, the detection elevator floor door 5 may pop out a long distance. The deformation detection protection plate 13 can prevent the detection elevator floor door 5 from hitting other people when it pops out and causing injuries, and the deformation detection protection plate 1 3, the sensing slots 1311 are evenly arranged, and the high-precision infrared rangefinder 133 is built in the sensing slots 1311. The sensing slots 1311 can provide protection for the high-precision infrared rangefinder 133 to prevent the detection elevator floor door 5 from being damaged by the impact and flying away. The anti-collision pad 132 can reduce the impact and damage force of the detection elevator floor door 5. The high-precision infrared rangefinder 133 is a prior art and will not be introduced in detail here. In the actual detection process, it is not limited to the high-precision infrared rangefinder 133 as a distance measuring device, and a laser rangefinder or an ultrasonic rangefinder can also be used according to actual needs.

[0058] If it is necessary to perform impact detection on the surface at different heights of the elevator floor door 5, the detection personnel can control the third motor 334 to start through the main controller 6, so that the third screw rod 333 rotates, and the second lifting block 43 moves up and down under the rotation of the third screw rod 333, thereby driving the impact assembly 4 to move up and down as a whole, so that the impact head 415 faces the surface at different heights of the elevator floor door 5; if it is necessary to change the impact direction of the impact head 415, the detection personnel can control the gear motor 3313 to start through the main controller 6, drive the angle adjustment gear 3312 to rotate, and the angle adjustment gear 3312 is meshed with the angle adjustment teeth 321, so that the angle adjustment guide plate 331 can slide along the angle adjustment guide rail 322, and the angle adjustment roller 3 311 rolls on the angle adjustment guide rail 322, thereby changing the angular positions of the lifting assembly 33 and the impact assembly 4. The inspection personnel adjust the impact assembly 4 to a suitable angular position according to the inspection requirements, and the impact head 415 can realize the impact force detection of different angles of the inspection elevator floor door 5; by changing the position of the door hanging plate 26 to change the horizontal position of the inspection elevator floor door 5, the impact assembly 4 can apply impact force to different positions of the surface of the inspection elevator floor door 5 in the horizontal direction; through the above-mentioned adjustment of the height and angle of the impact assembly 4 and the horizontal position of the inspection elevator floor door 5, the inspection area can cover various positions on the surface of the inspection elevator floor door 5, and the angle of the impact force can also be adjusted according to actual needs, so that the inspection conditions are more diverse and the inspection results are more comprehensive.

[0059] The force of the impact force applied by the impact head 415 to the detection elevator floor door 5 can also be adjusted, thereby obtaining the deformation state of the detection elevator floor door 5 under the conditions of impact forces of different sizes. The maximum impact force that the detection elevator floor door 5 can withstand can be detected by continuously changing the size of the impact force. First, the detection personnel control the fourth motor 4122 to start through the main controller 6, drive the fourth screw rod 4121 to rotate, and make the adjustment push arm 422 move in the direction close to the control inclined surface 4211. The end of the adjustment push arm 422 will slide on the control inclined surface 4211 and drive the sliding control block 421 away from the impact rod 413, so that the contact surface between the blocking right-angle triangle block 4212 and the blocking truncated cone 4131 becomes smaller, and the movement of the adjustment push arm 422 is proportional to the movement of the sliding control block 421. When the blocking right-angle triangle block 4212 moves to a certain position, the impact electric push rod 411 pushes the control cylinder 4 12 moves, and the distance from the end of the regulating push arm 422 to the uppermost end of the control slope 4211 is shortened compared with the initial state. The sliding control block 421 moves a shorter distance compared with the initial state, so that the blocking right-angled triangle block 4212 can be separated from the limiting effect on the blocking frustum 4131. The moving distance of the control cylinder 412 is also shortened compared with the initial state, and the deformation of the storage spring 414 is reduced. The deformation energy stored in the storage spring 414 is also smaller than that in the initial state. When the impact rod 413 loses the blocking right-angled triangle block 4212 and a catapult impact occurs, the impact force of the impact head 415 on the detection elevator floor door 5 is reduced accordingly, thereby realizing the adjustment of the impact force of the impact head 415. The storage spring 414 can be made of spring steel. Spring steel has a high elastic modulus and good fatigue performance, which can make the storage spring 414 have a larger stiffness coefficient, thereby storing more deformation energy.

[0060] After the impact head 415 exerts an impact force on the surface of the detection layer door, the deformation energy of the force storage spring 414 is released, and the limit plate 4132 on the impact rod 413 fits with the inner end surface of the control tube 412 close to the impact head 415. The impact electric push rod 411 drives the control tube 412 to move in the direction away from the impact head 415, and the end surface of the control tube 412 will drive the limit plate 4132 to move together. The impact rod 413 moves toward the side of the control tube 412 driven by the limit plate 4132, and the side wall of the blocking table 4131 pushes the inclined surface of the blocking right-angled triangle block 4212, so that the blocking right-angled triangle block 4212 drives the sliding control block 421 to move downward as a whole, and the reset spring 4213 is compressed until the blocking table 4131 is The edge passes over the end of the blocking right-angled triangle block 4212, and the sliding control block 421 rebounds and slides toward the side of the impact rod 413 under the elastic action of the reset spring 4213, so that the right-angle surface of the blocking right-angled triangle block 4212 is in contact with the bottom surface of the blocking cone 4131 again, and the blocking right-angled triangle block 4212 again limits the blocking cone 4131. At the same time, the fourth motor 4122 controls the fourth screw rod 4121 to move the adjustment push arm 422 back to the end of the fourth screw rod 4121 away from the sliding control block 421, and the impact rod 413, the control tube 412, the sliding control block 421 and the adjustment push arm 422 are respectively restored to their initial positions, completing an impact cycle, and the above operation can be repeated when the impact detection is performed next time.

[0061] The above is the overall workflow of the present invention, and you can repeat this step next time you use it.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An elevator door strength detection device, comprising a main chassis (1), characterized in that: One side of the main chassis (1) is provided with front and rear guide rails (12); a rotating disk (11) is rotatably provided on the upper wall of the main chassis (1); a landing door adjustment fixing assembly (2) is provided on the upper wall of the rotating disk (11); an angle adjustment assembly (3) is slidably provided above the front and rear guide rails (12); a side of the angle adjustment assembly (3) close to the landing door adjustment fixing assembly (2) is movably provided with an impact assembly (4); a detection elevator landing door (5) is provided in the landing door adjustment fixing assembly (2); and one side of the main chassis (1) is provided with A main controller (6), wherein the impact assembly (4) comprises a fixed outer cylinder (41), an auxiliary outer shell (42) and a second lifting block (43); the fixed outer cylinder (41) is slidably disposed on a side of the angle adjustment assembly (3) close to the landing door adjustment fixed assembly (2); the auxiliary outer shell (42) is disposed on a side wall of the fixed outer cylinder (41); the fixed outer cylinder (41) is connected to the interior of the auxiliary outer shell (42); and the second lifting block (43) is disposed on a side of the fixed outer cylinder (41) close to the angle adjustment assembly (3); An impact electric push rod (411), a control cylinder (412), an impact rod (413) and a force storage spring (414) are arranged inside the fixed outer cylinder (41); the impact electric push rod (411) is arranged at one end of the fixed outer cylinder (41) close to the second lifting block (43); the control cylinder (412) is arranged at a side of the impact electric push rod (411) away from the second lifting block (43); the side wall of the control cylinder (412) is in contact with the inner wall of the fixed outer cylinder (41); the output end of the impact electric push rod (411) is connected to the control cylinder (412); the impact rod (413) is arranged at a side of the control cylinder (412) away from the impact electric push rod (411); and the end of the impact rod (413) close to the control cylinder (412) penetrates the control cylinder (412) The end surface of the impact rod (413) is arranged on the end surface of the fixed outer cylinder (412), a limiting plate (4132) is provided at one end of the impact rod (413) close to the control cylinder (412), the limiting plate (4132) is arranged in the control cylinder (412), the limiting plate (4132) is in contact with the end surface of the control cylinder (412) close to the impact rod (413), the end of the impact rod (413) away from the control cylinder (412) penetrates the end surface of the fixed outer cylinder (41), the side wall of the impact rod (413) is provided with a blocking cone (4131), the bottom edge of the blocking cone (4131) is in contact with the inner wall of the fixed outer cylinder (41), and the storage spring (414) is connected between the top surface of the blocking cone (4131) and the end surface of the control cylinder (412); A sliding control block (421) and an adjusting push arm (422) are provided in the auxiliary housing (42); the sliding control block (421) is provided at one end of the auxiliary housing (42) away from the impact electric push rod (411); the adjusting push arm (422) is provided on a side of the sliding control block (421) close to the impact electric push rod (411); a control inclined surface (4211) is embedded in the side wall of the sliding control block (421) close to the adjusting push arm (422); a blocking right-angled triangle block (4212) is provided on the side wall of the sliding control block (421) close to the impact rod (413); and a right-angled surface of the blocking right-angled triangle block (4212) contacts the bottom surface of the blocking truncated cone (4131); An impact head (415) is provided at one end of the impact rod (413) away from the control cylinder (412), and the impact head (415) is arranged outside the fixed outer cylinder (41). A pressure sensor (416) is provided between the impact head (415) and the impact rod (413). A fourth screw rod (4121) is rotatably provided at one end of the side wall of the control cylinder (412) close to the auxiliary housing (42). A fourth motor (4122) is provided at the end of the fourth screw rod (4121). The output end of the fourth motor (4122) is connected to the end of the fourth screw rod (4121). The adjusting push arm (422) is far away from the control cylinder (412). One end of the sliding control block (421) is sleeved on the side wall of the fourth screw rod (4121), the end of the adjusting push arm (422) is threadedly connected to the fourth screw rod (4121), the side wall of one end of the adjusting push arm (422) close to the sliding control block (421) is slidably arranged in contact with the control inclined surface (4211), a return spring (4213) is connected between the side wall of the sliding control block (421) away from the impact rod (413) and the inner wall of the auxiliary housing (42), and the side wall of the sliding control block (421) away from the adjusting push arm (422) is slidably arranged in contact with the inner wall of the auxiliary housing (42); When the end of the adjusting push arm (422) close to the sliding control block (421) is located at the bottom of the control slope (4211), the end of the blocking right-angle triangle block (4212) contacts the side wall of the impact rod (413); when the end of the adjusting push arm (422) close to the sliding control block (421) is located at the top of the control slope (4211), the end of the blocking right-angle triangle block (4212) is separated from the edge of the blocking cone (4131).

2. The elevator door strength detection device according to claim 1 is characterized in that: The angle adjustment assembly (3) comprises a guide rail slider (31), an angle adjustment bottom ring (32) and a lifting assembly (33); the guide rail slider (31) is slidably engaged in the front and rear guide rails (12); the angle adjustment bottom ring (32) is arranged on the upper wall of the guide rail slider (31); the angle adjustment bottom ring (32) is in an arc shape; the upper wall of the angle adjustment bottom ring (32) is provided with angle adjustment teeth (321); the upper wall of the angle adjustment teeth (321) is provided with an angle adjustment guide rail (32); 2), the lifting assembly (33) is movably arranged on the upper wall of the angle adjustment guide rail (322), the lower walls of the left and right ends of the angle adjustment bottom ring (32) are symmetrically provided with movable seats (323), and the lower walls of the movable seats (323) are evenly embedded with universal balls (3231) for rolling; when the angle adjustment assembly (3) moves to one end of the front and rear guide rails (12) close to the floor door adjustment fixed assembly (2), the center of the arc of the angle adjustment bottom ring (32) coincides with the center of the rotating disk (11).

3. The elevator door strength detection device according to claim 2 is characterized in that: The lifting assembly (33) comprises an angle adjustment guide plate (331) and a lifting guide rail (332); the angle adjustment guide plate (331) is movably arranged on the upper wall of the angle adjustment guide rail (322); the lifting guide rail (332) is arranged at one end of the angle adjustment guide plate (331) close to the floor door adjustment fixing assembly (2); an array of angle adjustment rollers (3311) are arranged on the lower wall of the angle adjustment guide plate (331); the angle adjustment rollers (3311) are respectively engaged and rolled on the side walls of the angle adjustment guide rail (322); an angle adjustment gear (3312) is rotatably arranged on the lower wall of the angle adjustment guide plate (331); the angle adjustment gear (3312) is rotatably arranged on the lower wall of the angle adjustment guide plate (331); 2) meshing with the angle adjustment teeth (321), a gear motor (3313) is provided at the rotation shaft of the angle adjustment gear (3312), the output end of the gear motor (3313) is connected to the rotation shaft of the angle adjustment gear (3312), a third screw rod (333) is rotatably provided in the lifting guide rail (332), a third motor (334) is provided at the upper end of the third screw rod (333), the output end of the third motor (334) is connected to the end of the third screw rod (333), the second lifting block (43) is sleeved on the side wall of the third screw rod (333), and the second lifting block (43) is threadedly connected to the third screw rod (333).

4. The elevator door strength detection device according to claim 3 is characterized in that: The floor door adjustment fixing assembly (2) comprises a fixing frame (21), a first screw rod (22) and an adjustment sliding rod (23); the fixing frame (21) is fixedly arranged at the middle position of the upper wall of the rotating disk (11); the first screw rod (22) and the adjustment sliding rod (23) are symmetrically arranged at the left and right ends of the fixing frame (21); a first motor (221) is arranged at the upper end of the first screw rod (22); the output end of the first motor (221) is connected to the end of the first screw rod (22); a floor door installation sill (24) is arranged directly below the fixing frame (21); the floor door installation sill (24) is fixedly arranged at the middle position of the upper wall of the rotating disk (11); and a sliding rod (23) is arranged between the fixing frame (21) and the floor door installation sill (24). A movable upper sill frame (25) is provided, and first lifting blocks (251) are symmetrically provided at the left and right ends of the movable upper sill frame (25), and the first lifting blocks (251) are respectively sleeved on the side walls of the first screw rod (22) and the adjusting slide rod (23), and the first lifting blocks (251) are threadedly connected to the first screw rod (22), and a lower guide rail (252) is provided at the lower end of the side wall of the movable upper sill frame (25), and a door hanging plate (26) is slidably engaged on the lower guide rail (252), and the upper end edge of the detection elevator floor door (5) is fixed to the lower end of the door hanging plate (26), and the lower end of the detection elevator floor door (5) is evenly provided with door sliders (51), and the door sliders (51) are slidably engaged in the floor door installation sill (24).

5. The elevator door strength detection device according to claim 4 is characterized in that: A rotating motor (111) is provided at one side edge of the main chassis (1), a rotating gear is provided at the output end of the rotating motor (111), rotating gear teeth are provided at the edge of the rotating disk (11), the rotating gear teeth mesh with the rotating gear teeth, a second screw rod (121) is provided in the front and rear guide rails (12), a second motor (122) is provided at the end of the second screw rod (121), the output end of the second motor (122) is connected to the end of the second screw rod (121), a deformation detection protection plate (13) is provided at one end of the upper wall of the main chassis (1), and the deformation detection protection plate (13) is arranged at the layer The door adjustment fixing assembly (2) is located at a side away from the angle adjustment assembly (3); the deformation detection protection plate (13) comprises a sensor support plate (131) and an anti-collision pad (132); the sensor support plate (131) is arranged at one end of the upper wall of the main chassis (1); the anti-collision pad (132) covers the side wall of the sensor support plate (131) close to the floor door adjustment fixing assembly (2); the side wall of the sensor support plate (131) close to the floor door adjustment fixing assembly (2) is evenly provided with sensing grooves (1311); and a high-precision infrared rangefinder (133) is arranged in the sensing groove (1311).

6. The elevator door strength detection device according to claim 5, characterized in that: The rotating motor (111), the second motor (122), the high-precision infrared rangefinder (133), the first motor (221), the gear motor (3313), the third motor (334), the impact electric push rod (411), the fourth motor (4122) and the pressure sensor (416) are respectively electrically connected to the main controller (6).

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