Elevator lock hook bearing axial clearance test tool based on intelligent sensor

Abstract

The invention discloses an elevator lock hook bearing axial clearance testing tool based on an intelligent sensor, and relates to the technical field of elevator lock hook bearing axial clearance testing tools based on the intelligent sensor, and the elevator lock hook bearing axial clearance testing tool based on the intelligent sensor comprises a base and a carrier, the base and the carrier are placed on the same horizontal plane, a lifting supporting rod is fixed to the upper surface of the base, and an intelligent control device body is fixed to the end, away from the base, of the lifting supporting rod. According to the elevator latch hook bearing axial clearance test tool based on the intelligent sensor, when a latch hook plate is tested, the connection support, the air cylinder and the piston rod are matched to replace manual operation of a worker to press the latch hook plate, so that the pressure and the position of the latch hook plate are more stable; the problem that the error of data measured during testing is large due to the fact that the applied force is difficult to fix or detect during multiple tests is avoided, and the problem that the instability of manual force application is large is solved.

Description

Technical Field

[0001] This invention relates to the field of elevator lock hook bearing axial clearance testing fixture technology based on intelligent sensors, specifically an elevator lock hook bearing axial clearance testing fixture based on intelligent sensors. Background Technology

[0002] The elevator locking hook device is the core safety component of the elevator landing door system. Its locking reliability directly determines the safety of personnel and equipment during elevator operation. As a key transmission component of the locking hook device, the axial clearance of the locking hook bearing is a core technical parameter that affects the opening and closing sensitivity, movement stability and service life of the locking hook.

[0003] A fixture for testing the axial clearance of an elevator lock hook bearing, patent publication number CN223376540U, describes a structure in which the outer ring of the bearing is locked to a stepped bushing by a stepped bushing nut, and the stepped bushing is fixedly mounted to the lock hook plate, resulting in a relatively stationary state between the outer ring of the bearing and the lock hook plate. The inner ring of the bearing is locked to the stepped bushing by a first fastening nut, also resulting in a relatively stationary state between the inner ring of the bearing and the stepped bushing. Simultaneously, the measuring head of the dial indicator is always in contact with the surface of the lock hook plate. Therefore, the axial clearance of the bearing can be determined by the dial indicator reading simply by applying a certain force to the lock hook plate and swinging it up and down. This fixture solves the technical problem of testing the axial clearance of an elevator lock hook bearing during its movement. It only requires applying a certain force to the lock hook plate and swinging it up and down to determine the axial clearance of the bearing by the dial indicator reading. The overall structure is simple, has a low failure rate, and is portable.

[0004] However, the aforementioned testing fixture relies on manual pressing of the lock hook plate by staff, which makes the measurement accuracy highly susceptible to human factors. When manually pressing the lock hook plate to make it swing, the measurement results may be affected by inconsistent magnitude and direction of the force. Furthermore, the aforementioned equipment still uses a dial indicator for measurement, which requires manual reading and recording, making it unsuitable for repeated testing and data management. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a smart sensor-based axial clearance testing fixture for elevator lock hook bearings, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an axial clearance testing fixture for elevator lock hook bearings based on intelligent sensors, comprising a base and a carrier, wherein the base and the carrier are placed on the same horizontal plane, a lifting support rod is fixed to the upper surface of the base, and an intelligent control device body is fixed to the end of the lifting support rod away from the base, a profile groove is formed on the upper surface of the carrier, a stepped shaft penetrates the upper surface of the carrier and is slidably connected at the penetration point, the outer wall of the stepped shaft is in contact with the inner wall of the profile groove, a stepped bushing is rotatably attached to the outer wall at the top of the stepped shaft, the stepped bushing penetrates the lock hook plate and is rotatably connected at the penetration point, a testing device for pressing the lock hook plate is provided on the side of the intelligent control device body, an adjustment device for adjusting the pressing position is provided below the testing device, a vision sensor is fixed to the bottom surface of the intelligent control device body, the lifting support rod is adjusted so that the lifting support rod drives the intelligent control device body to be suspended above the carrier, the testing device is used to press the lock hook plate, and the position of the lock hook plate is detected and recorded by the vision sensor.

[0007] The testing device includes a connecting bracket, and the lifting support rod passes through the connecting bracket, cylinder, piston rod, adjusting block, mounting plate, positioning block, connecting rod and rubber friction block, and is slidably connected at the penetration point. The cylinder is fixedly connected to the inner wall of the connecting bracket.

[0008] According to the above technical solution, the piston rod is connected to the bottom surface of the cylinder, the adjusting block passes through the bottom surface of the piston rod and is slidably connected at the penetration point, and the mounting plate is fixedly connected to the bottom surface of the adjusting block. When testing is required, the cylinder is started by the main body of the intelligent control device, and the cylinder drives the piston rod to slide up and down. When the piston rod slides down, it drives the adjusting block and the mounting plate to move down as well. When the mounting plate moves down, it drives the adjusting device below the mounting plate to move down as well. When the adjusting device moves down to the locking hook plate, it presses down on the locking hook plate, and the visual sensor records the position change of the locking hook plate.

[0009] According to the above technical solution, the piston rod passes through the positioning block and is fixedly connected at the penetration point. The connecting rod is hinged to the side wall of the positioning block, and the rubber friction block is hinged to the end of the connecting rod away from the positioning block.

[0010] According to the above technical solution, the adjustment device includes an adjustment box, a threaded rod, a top rod, a hollow box, an intake valve pipe, an exhaust valve pipe, a U-shaped rod, and a sliding plate, wherein the adjustment box is fixedly connected to the bottom surface of the mounting plate.

[0011] According to the above technical solution, the threaded rod passes through the regulating box and is rotatably connected at the point of penetration; the threaded rod passes through the top rod and is threadedly connected at the point of penetration; and the top rod is slidably connected to the inner wall of the regulating box.

[0012] According to the above technical solution, the hollow box is fixedly connected to the bottom surface of the mounting plate, the intake valve pipe is fixedly connected to the bottom surface of the hollow box, and the exhaust valve pipe is fixedly connected to the side wall of the hollow box.

[0013] According to the above technical solution, the U-shaped rod penetrates the side wall of the hollow box and is slidably connected at the penetration point. The sliding plate is fixedly connected to the end of the U-shaped rod, and the outer wall of the sliding plate is in contact with the inner wall of the hollow box. When it is necessary to test data at different angles, the threaded rod is rotated, and the rotation of the threaded rod causes the top rod to slide on the inner wall of the adjustment box. Since the bottom end of the top rod is hemispherical, when the distance between the top rod and the central axis of the mounting plate changes, the angle at which the bottom end of the top rod applies pressure to the locking hook plate also changes. Adjusting the distance between the top rod and the central axis of the mounting plate changes the angle during testing.

[0014] According to the above technical solution, a dust collection device for collecting dust on the surface of the locking hook plate is provided below the pressing device. The dust collection device includes a dust collection box, a sealing plate, a return spring, a pressure block, a pressure plate, and a magnetic plate. The dust collection box is fixedly connected to the bottom surface of the hollow box, and the hollow box is in communication with the dust collection box.

[0015] According to the above technical solution, the sealing plate penetrates through the side wall of the dust collection box and fits at the penetration point. One end of the reset spring is fixedly connected to the protrusion on the side wall of the sealing plate. The pressure block is fixedly connected to the other end of the reset spring. The pressure block is slidably connected to the side wall of the sealing plate. The pressure plate is fixedly connected to the side wall of the pressure block. The magnetic plate is hinged to the side wall of the inner wall of the dust collection box.

[0016] This invention provides a fixture for testing the axial clearance of elevator lock hook bearings based on intelligent sensors. It has the following advantages: 1. This invention, when testing the hook plate, uses a connecting bracket, cylinder, and piston rod to replace manual pressing of the hook plate by the operator. This makes the pressure and position of the hook plate more stable, avoiding large errors in the measured data caused by difficulty in fixing or detecting the applied force during multiple tests. It solves the problem of instability caused by manual force application. Furthermore, during hook plate testing, the position of the testing device is adjusted using adjusting blocks, mounting plates, positioning blocks, connecting rods, and rubber friction blocks, allowing testing at different positions. This results in higher accuracy of the measured data and avoids data that is monotonous and lacks comparability during repeated tests. This solves the problem of monotonous data from repeated tests, making it difficult to calculate the equipment's data more accurately.

[0017] 2. When testing the equipment, this invention uses an adjustment box, threaded rod, and top rod to adjust the angle of the adjustment device, thereby simulating more situations and applying pressure at different angles to the hook plate. Data is collected under pressure at different angles, making the test data more realistic and avoiding situations where tests are limited and cannot closely reflect real-world use. This solves the problem of tests failing to accurately reflect actual conditions. Furthermore, when adjusting the angle, a hollow box, air inlet valve pipe, air outlet valve pipe, U-shaped rod, and sliding plate are used to suck up dust from the hook plate surface. This prevents dust from obstructing the vision sensor, which could lead to significant errors in the data detected by the vision sensor and affect the calculation data of the intelligent control device. This solves the problem that surface dust easily causes errors in vision sensor detection.

[0018] 3. When adsorbing dust, this invention uses a dust collection box, sealing plate, return spring, pressure block, pressure plate and magnetic plate to collect the dust, and then covers the dust after collection, so as to prevent the dust from flying into the air again with the squeezed airflow after adsorption and causing pollution to the environment. It also makes the dust fall back onto the surface of the hook plate, solving the problem that dust is easy to fly in the air with the airflow. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bottom view structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of structure A; Figure 4 This is a partial structural diagram of the present invention; Figure 5 This is a partial structural diagram of the present invention; Figure 6 This is a partial cross-sectional view of the present invention; Figure 7 This is a partial cross-sectional view of the present invention.

[0020] In the diagram: 1. Base; 2. Lifting support rod; 3. Main body of intelligent control device; 4. Carrier; 5. Step shaft; 6. Locking hook plate; 71. Connecting bracket; 72. Cylinder; 73. Piston rod; 74. Adjusting block; 75. Mounting plate; 76. Positioning block; 77. Connecting rod; 78. Rubber friction block; 81. Adjusting box; 82. Threaded rod; 83. Top rod; 84. Hollow box; 85. Inlet valve pipe; 86. Exhaust valve pipe; 87. U-shaped rod; 88. Sliding plate; 91. Dust collection box; 92. Sealing plate; 93. Return spring; 94. Pressure block; 95. Pressure plate; 96. Magnetic plate; 10. Vision sensor. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-7 One embodiment of the present invention is: an axial clearance testing fixture for elevator lock hook bearing based on intelligent sensors, including a base 1 and a carrier 4. The base 1 and the carrier 4 are placed on the same horizontal plane. A lifting support rod 2 is fixed on the upper surface of the base 1. An intelligent control device body 3 is fixed at the end of the lifting support rod 2 away from the base 1. A profile groove is opened on the upper surface of the carrier 4. A stepped shaft 5 passes through the upper surface of the carrier 4 and is slidably connected at the penetration point. The outer wall of the stepped shaft 5 is in contact with the inner wall of the profile groove. A stepped bushing is rotatably attached to the outer wall of the top of the stepped shaft 5. The stepped bushing passes through the lock hook plate 6 and is rotatably connected at the penetration point. A testing device for pressing the lock hook plate 6 is provided on the side of the intelligent control device body 3. A vision sensor 10 is fixed on the bottom surface of the intelligent control device body 3. The testing device includes a connecting bracket 71, a lifting rod 2 that passes through the connecting bracket 71, a cylinder 72, a piston rod 73, an adjusting block 74, a mounting plate 75, a positioning block 76, a connecting rod 77, and a rubber friction block 78, and is slidably connected at the point of penetration. The cylinder 72 is fixedly connected to the inner wall of the connecting bracket 71, and the piston rod 73 is piston-connected to the bottom surface of the cylinder 72. The adjusting block 74 passes through the bottom surface of the piston rod 73 and is slidably connected at the point of penetration. The mounting plate 75 is fixedly connected to the bottom surface of the adjusting block 74. The piston rod 73 passes through the positioning block 76 and is fixedly connected at the point of penetration. The connecting rod 77 is hinged to the side wall of the positioning block 76, and the rubber friction block 78 is hinged to the end of the connecting rod 77 away from the positioning block 76.

[0023] When testing the hook plate 6, the connecting bracket 71, cylinder 72, and piston rod 73 are used to replace manual pressing of the hook plate 6 by the operator. This makes the pressure and position of the hook plate 6 more stable, avoiding large errors in the measured data due to the difficulty in fixing or detecting the applied force during multiple tests. This solves the problem of large instability caused by manual force application. When testing the hook plate 6, the position of the testing device is adjusted by adjusting block 74, mounting plate 75, positioning block 76, connecting rod 77, and rubber friction block 78. This allows for testing at different positions, making the measured data more accurate. It avoids the problem of single data and lack of comparison when repeating tests, solving the problem of single data from repeated tests and difficulty in more accurate calculation of equipment data. In this embodiment, the lifting support rod 2 is adjusted so that it drives the main body 3 of the intelligent control device to be suspended above the carrier 4. The testing device is used to press the locking hook plate 6, and the position of the locking hook plate 6 is detected and recorded by the vision sensor 10. Then, the main body 3 of the intelligent control device calculates and compares the data recorded from multiple tests.

[0024] When testing is required, the cylinder 72 is activated via the main body 3 of the intelligent control device. The cylinder 72 drives the piston rod 73 to slide up and down. When the piston rod 73 slides down, it drives the adjusting block 74 and the mounting plate 75 to move down as well. When the mounting plate 75 moves down, it drives the adjusting device below the mounting plate 75 to move down as well. When the adjusting device moves down to the locking hook plate 6, it presses down on the locking hook plate 6. The vision sensor 10 records the position change of the locking hook plate 6 and transmits the data to the main body 3 of the intelligent control device. The main body 3 of the intelligent control device records in real time the downward thrust applied by the connecting bracket 71 when the locking hook plate 6 moves. After a set of tests is completed, the rubber friction block 78 is pushed away from the mounting plate 75. The rubber friction block 78 rotates around the hinge point between the rubber friction block 78 and the connecting rod 77 until the rubber friction block 78 slides on the bottom surface of the mounting plate 75 until it disengages. When all four sets of rubber friction blocks 78 are detached from the mounting plate 75, the mounting plate 75 is no longer restricted by the connecting rod 77 and the rubber friction blocks 78. Rotating the mounting plate 75 causes the adjusting block 74 to rotate on the inner wall of the piston rod 73, changing the position of the adjusting device. After adjustment, the rubber friction blocks 78 are rotated to the edge of the mounting plate 75 and pushed towards the center of the mounting plate 75. The rubber friction blocks 78 slide on the outer wall of the mounting plate 75 until the side wall of the rubber friction blocks 78 is in contact with the outer wall of the mounting plate 75. The bottom end of the rubber friction blocks 78 limits the mounting plate 75. At the same time, due to the anti-slip properties of the rubber friction blocks 78, the mounting plate 75 is fixed. After changing the position of the adjusting device, the cylinder 72 is started again, and the cylinder 72 drives the adjusting device to test the locking hook plate 6 again.

[0025] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, an adjustment device for adjusting the pressing position is provided below the testing device. The adjustment device includes an adjustment box 81, a threaded rod 82, a top rod 83, a hollow box 84, an intake valve pipe 85, an exhaust valve pipe 86, a U-shaped rod 87, and a sliding plate 88. The adjustment box 81 is fixedly connected to the bottom surface of the mounting plate 75. The threaded rod 82 passes through the adjustment box 81 and is rotatably connected at the penetration point. The threaded rod 82 passes through the top rod 83 and is threadedly connected at the penetration point. The top rod 83 is slidably connected to the inner wall of the adjustment box 81. The hollow box 84 is fixedly connected to the bottom surface of the mounting plate 75. The intake valve pipe 85 is fixedly connected to the bottom surface of the hollow box 84. The exhaust valve pipe 86 is fixedly connected to the side wall of the hollow box 84. The U-shaped rod 87 passes through the side wall of the hollow box 84 and is slidably connected at the penetration point. The sliding plate 88 is fixedly connected to the end of the U-shaped rod 87. The outer wall of the sliding plate 88 is in contact with the inner wall of the hollow box 84.

[0026] During equipment testing, the angle of the adjustment device is adjusted in conjunction with the adjustment box 81, threaded rod 82, and top rod 83 to simulate more situations, apply pressure at different angles to the hook plate 6, and detect data under pressure at different angles. This makes the test data more realistic and avoids situations where the test is difficult to closely match actual use due to limitations, thus solving the problem of the test not closely matching the actual situation. When adjusting the angle, the hollow box 84, air inlet valve pipe 85, air outlet valve pipe 86, U-shaped rod 87, and sliding plate 88 are used to suck up the dust on the surface of the hook plate 6, thus preventing the dust on the surface of the hook plate 6 from obstructing the vision sensor 10, which would cause large errors in the data detected by the vision sensor 10 and affect the calculation data of the main body 3 of the intelligent control device. This solves the problem that surface dust can easily cause errors in the detection of the vision sensor 10. Below the pressing device is a dust collection device for collecting dust from the surface of the locking hook plate 6. The dust collection device includes a dust collection box 91, a sealing plate 92, a return spring 93, a pressure block 94, a pressure plate 95, and a magnetic plate 96. The dust collection box 91 is fixedly connected to the bottom surface of the hollow box 84, and the hollow box 84 is connected to the dust collection box 91. The sealing plate 92 penetrates through the side wall of the dust collection box 91 and fits snugly at the penetration point. One end of the return spring 93 is fixedly connected to the protrusion on the side wall of the sealing plate 92. The pressure block 94 is fixedly connected to the other end of the return spring 93 and slides on the side wall of the sealing plate 92. The pressure plate 95 is fixedly connected to the side wall of the pressure block 94. The magnetic plate 96 is hinged to the side wall of the inner wall of the dust collection box 91.

[0027] When adsorbing dust, the dust collection box 91, sealing plate 92, return spring 93, pressure block 94, pressure plate 95 and magnetic plate 96 are used to collect the dust, and the dust is shielded after collection to prevent the dust from flying into the air again with the squeezed airflow after adsorption. In this embodiment, when different angles need to be tested, the threaded rod 82 is rotated. The rotation of the threaded rod 82 causes the push rod 83 to slide against the inner wall of the adjusting box 81. Since the bottom end of the push rod 83 is hemispherical, when the distance between the push rod 83 and the central axis of the mounting plate 75 changes, the angle at which the bottom end of the push rod 83 applies pressure to the locking hook plate 6 also changes. Adjusting the distance between the push rod 83 and the central axis of the mounting plate 75 changes the angle during testing. The intelligent control device 3 calculates the adjusted distance and angle, and repeats the test. When the push rod 83 slides... At the same time, it also drives the U-shaped rod 87 to slide. The sliding of the U-shaped rod 87 causes the sliding plate 88 to slide on the inner wall of the hollow box 84. When the U-shaped rod 87 slides away from the air intake valve pipe 85, air is drawn into the hollow box 84 through the air intake valve pipe 85. When the air intake valve pipe 85 draws air into the surface of the hook plate 6, it also adsorbs the dust on the surface of the hook plate 6 and draws the dust into the interior of the hollow box 84. When the sliding plate 88 slides back to the direction of the air intake valve pipe 85 to reset, the sliding plate 88 compresses the air inside the hollow box 84 and pushes the air out from the exhaust valve pipe 86.

[0028] When dust is drawn into the hollow box 84 along with air through the intake valve pipe 85, the dust begins to settle and fall because it is no longer affected by airflow inside the hollow box 84. When the sliding plate 88 slides to the pressure block 94, the side of the sliding plate 88 slides against the inclined surface of the pressure block 94, pushing the pressure block 94 downward. As the pressure block 94 slides downward, it also moves the pressure plate 95 downward, simultaneously compressing the return spring 93. When the pressure plate 95 moves to the magnetic plate 96, the side of the pressure plate 95 slides against the upper surface of the magnetic plate 96, pushing the magnetic plate 96 around the dust collection box 91. The hinge rotates, causing the magnetic plate 96 to open. Dust slides along the surface of the magnetic plate 96 and into the dust collection box 91. When the sliding plate 88 slides back towards the air inlet valve pipe 85, the pressure block 94 is reset by the restoring force of the return spring 93. Since the dust collection box 91 is supported by a magnet and repels the magnetic plate 96, when the pressure block 94 drives the pressure plate 95 to reset, the magnetic plate 96 is reset by the repulsive magnetic force, thus blocking the dust that falls into the dust collection box 91 and preventing the airflow from squeezing it outward from carrying the dust out. After the test is completed, the dust collection device can be removed, and the sealing plate 92 can be pulled out to clean the dust.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for testing the axial clearance of an elevator lock hook bearing based on a smart sensor, comprising a base (1) and a carrier (4), characterized in that: The base (1) and the carrier (4) are placed on the same horizontal plane. A lifting support rod (2) is fixed on the upper surface of the base (1). The end of the lifting support rod (2) away from the base (1) is fixed with the main body (3) of the intelligent control device. A profile groove is opened on the upper surface of the carrier (4). The step shaft (5) passes through the upper surface of the carrier (4) and is slidably connected at the penetration point. The outer wall of the step shaft (5) is in contact with the inner wall of the profile groove. A step shaft sleeve is rotatably mounted on the outer wall of the top of the step shaft (5). The step shaft sleeve passes through the locking hook plate (6) and is rotatably connected at the penetration point. A test device for pressing the locking hook plate (6) is provided on the side of the main body (3) of the intelligent control device. An adjustment device for adjusting the pressing position is provided below the test device. A vision sensor (10) is fixed on the bottom surface of the main body (3) of the intelligent control device. The testing device includes a connecting bracket (71), and the lifting support rod (2) passes through the connecting bracket (71), cylinder (72), piston rod (73), adjusting block (74), mounting plate (75), positioning block (76), connecting rod (77) and rubber friction block (78), and is slidably connected at the point of penetration. The cylinder (72) is fixedly connected to the inner wall of the connecting bracket (71).

2. The elevator lock hook bearing axial clearance testing fixture based on intelligent sensors according to claim 1, characterized in that: The bottom surface of the cylinder (72) is connected to a piston rod (73), the adjusting block (74) passes through the bottom surface of the piston rod (73) and is slidably connected at the point of penetration, and the mounting plate (75) is fixedly connected to the bottom surface of the adjusting block (74).

3. The elevator lock hook bearing axial clearance testing fixture based on intelligent sensors according to claim 2, characterized in that: The piston rod (73) passes through the positioning block (76) and is fixedly connected at the point of penetration. The connecting rod (77) is hinged to the side wall of the positioning block (76), and the rubber friction block (78) is hinged to the end of the connecting rod (77) away from the positioning block (76).

4. The elevator lock hook bearing axial clearance testing fixture based on intelligent sensors according to claim 3, characterized in that: The adjusting device includes an adjusting box (81), a threaded rod (82), a top rod (83), a hollow box (84), an intake valve pipe (85), an exhaust valve pipe (86), a U-shaped rod (87), and a sliding plate (88). The adjusting box (81) is fixedly connected to the bottom surface of the mounting plate (75).

5. The elevator lock hook bearing axial clearance testing fixture based on intelligent sensors according to claim 4, characterized in that: The threaded rod (82) passes through the regulating box (81) and is rotatably connected at the point of penetration. The threaded rod (82) passes through the top rod (83) and is threadedly connected at the point of penetration. The top rod (83) is slidably connected to the inner wall of the regulating box (81).

6. The elevator lock hook bearing axial clearance testing fixture based on intelligent sensors according to claim 5, characterized in that: The hollow box (84) is fixedly connected to the bottom surface of the mounting plate (75), the intake valve pipe (85) is fixedly connected to the bottom surface of the hollow box (84), and the exhaust valve pipe (86) is fixedly connected to the side wall of the hollow box (84).

7. The elevator lock hook bearing axial clearance testing fixture based on intelligent sensors according to claim 6, characterized in that: The U-shaped rod (87) passes through the side wall of the hollow box (84) and is slidably connected at the point of penetration. The sliding plate (88) is fixedly connected to the end of the U-shaped rod (87), and the outer wall of the sliding plate (88) is in contact with the inner wall of the hollow box (84).

8. The elevator lock hook bearing axial clearance testing fixture based on intelligent sensors according to claim 7, characterized in that: Below the pressing device is a dust collection device for collecting dust on the surface of the locking hook plate (6). The dust collection device includes a dust collection box (91), a sealing plate (92), a return spring (93), a pressure block (94), a pressure plate (95), and a magnetic plate (96). The dust collection box (91) is fixedly connected to the bottom surface of the hollow box (84), and the hollow box (84) is connected to the dust collection box (91).

9. The elevator lock hook bearing axial clearance testing fixture based on intelligent sensors according to claim 8, characterized in that: The sealing plate (92) penetrates the side wall of the dust collection box (91) and fits at the penetration point. One end of the return spring (93) is fixedly connected to the protrusion on the side wall of the sealing plate (92). The pressure block (94) is fixedly connected to the other end of the return spring (93). The pressure block (94) is slidably connected to the side wall of the sealing plate (92). The pressure plate (95) is fixedly connected to the side wall of the pressure block (94). The magnetic plate (96) is hinged to the side wall of the inner wall of the dust collection box (91).

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