An elevator key mechanical component failure detection device

Abstract

The utility model relates to a kind of elevator key mechanical component failure detection device, belong to elevator detection equipment technical field.The detection platform is provided with detection truss of portal shape, the middle part of the detection truss is fixed with failure calibration ring by two identical guide sliding blocks, and two the guide sliding block is symmetrically welded on the side surface of failure calibration ring, and the failure calibration ring is connected inside detection adjusting mechanism;The detection adjusting mechanism includes lifting shell, two guide sliding grooves of equal specification and symmetric distribution with guide sliding block are set in the side surface of the lifting shell, one guide sliding groove is embedded in each the guide sliding block correspondingly and is penetrated, so that lifting shell can be lifted and slid on fixed failure calibration ring.The utility model can carry out high-speed impact simulation and threshold calibration observation failure detection to the internal spring component of elevator buffer, realize the automatic detection of spring component and quantifiable determination effect, improve failure detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of elevator testing equipment technology, and in particular to a failure detection device for key mechanical components of elevators. Background Technology

[0002] Elevator buffers, as a crucial component of elevator safety protection systems, primarily function to absorb impact energy during emergency falls, overshoots, or other abnormal operating conditions. This is achieved through the elasticity of internal springs, ensuring the car can effectively decelerate even in extreme situations, preventing passenger injury or equipment damage. Therefore, the reliability of the elevator buffer's spring performance directly impacts the overall safety of the elevator. However, the internal spring structure of elevator buffers typically possesses high stiffness and nonlinear compression characteristics. The elevator impact environment exhibits strong instantaneous dynamic characteristics, and manual loading or simple pressure application cannot adequately simulate the high-speed impact behavior during an emergency fall. This leads to significant deviations in test results, making it difficult to accurately reflect fatigue damage and failure trends of the spring components. Furthermore, traditional testing devices cannot independently determine reference threshold standards based on failure detection criteria to observe and judge the degree of failure of mechanical components during failure detection. This results in significant deviations in subsequent data calculation, processing, and component maintenance, reducing the accuracy of the test results. Summary of the Invention

[0003] This invention overcomes the shortcomings of the prior art and provides a failure detection device for key mechanical components of elevators.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a failure detection device for key mechanical components of elevators, the device including a detection platform: The testing platform is equipped with a gantry-shaped testing truss. The middle part of the testing truss is fixed with a failure calibration ring by two guide sliders of the same specification. The two guide sliders are symmetrically welded to the side of the failure calibration ring. The failure calibration ring is connected inside the testing adjustment mechanism. The detection and adjustment mechanism includes a lifting housing. The lifting housing has two guide grooves that are the same size as the guide sliders and are symmetrically distributed on its side. Each guide slider is embedded through a guide groove, so that the lifting housing can slide up and down on a fixed failure calibration ring through the cooperation of the guide sliders and guide grooves. A failure detection cylinder is provided at the concentric circle inside the lifting housing. A first chamber is formed between the failure detection cylinder and the lifting housing, and a failure calibration ring is placed in the first chamber. A second chamber is formed inside the failure detection cylinder. A cylindrical impact hammer is embedded in the second chamber for impact detection of the elevator buffer component. A conical through hole is opened at the top of the first chamber and extends through the second chamber. The second chamber has two symmetrical impact limiting grooves on its side. Each impact limiting groove is embedded with a measuring mark plate. The two measuring mark plates are fixed to the side of the impact hammer block and are also symmetrically distributed, so that the impact hammer block can drive the measuring mark plate to slide vertically within the impact limiting groove in the second chamber.

[0005] Furthermore, in a preferred embodiment of the present invention, the measuring mark plate extends through the impact limiting groove and into the first chamber, and is positioned directly above the failure calibration ring, allowing relative contact between the measuring mark plate and the failure calibration ring.

[0006] Furthermore, in a preferred embodiment of the present invention, a T-shaped clamping pile is provided at the top of the impact limiting groove, the top of the T-shaped clamping pile is chamfered, and the T-shaped clamping pile can be clamped and lifted by the impact lifting mechanism.

[0007] Furthermore, in a preferred embodiment of the present invention, the impact lifting mechanism includes a cylinder, the cylinder being fixed to the top of the lifting housing, and the output rod of the cylinder being connected to two semi-arc drive blocks via a Y-shaped connector.

[0008] Furthermore, in a preferred embodiment of the present invention, the two semi-arc drive blocks are symmetrically connected to each other by two hinged columns, leaving an installation gap in the middle, so that a cylindrical drive component is embedded in the second chamber.

[0009] Furthermore, in a preferred embodiment of the present invention, two symmetrically distributed lifting clamping claws are installed in the installation gap, each of the lifting clamping claws is hinged to a hinge post, and the sidewall of each lifting clamping claw fits into a tapered through hole.

[0010] Furthermore, in a preferred embodiment of the present invention, each of the lifting grippers is provided with a spring fixing block on its side, and a reset spring is connected between the two spring fixing blocks.

[0011] Furthermore, in a preferred embodiment of the present invention, a ball screw nut is embedded on the failure calibration ring, the ball screw nut is installed and connected to the ball screw, the ball screw is longitudinally connected to the first chamber through a bearing, the top end of the ball screw is connected to a servo motor, and the servo motor is fixed to the top of the lifting housing.

[0012] Furthermore, in a preferred embodiment of the present invention, the side of the failure detection cylinder is printed with a buffer failure detection scale with longitudinal markings, and the buffer failure detection scale is located at the edge of the impact limiting groove.

[0013] Furthermore, in a preferred embodiment of the present invention, the detection platform is provided with a detection positioning groove adapted to the shape of the elevator buffer.

[0014] The beneficial technical effects of this utility model are as follows: This invention enables automatic detection by driving the vertical lifting of the elevator housing via a ball screw module. It also allows a failure calibration ring to set a failure threshold on the lifting housing, providing a standardized benchmark for detecting spring failures in elevator buffers. Furthermore, by setting up an impact lifting mechanism to automatically grab and release an impact hammer of a certain weight, allowing for free-fall motion, it simulates the buffering performance of the elevator buffer in the event of an accidental rapid drop of the car. This allows for the detection of the mechanical failure rate of the spring components, replacing the risky process of manually removing heavy objects for impact testing. Additionally, by setting the distance between the scale position of the measuring mark plate and the failure calibration ring, the invention quickly determines the degree of spring component failure, eliminating the tedious steps of repeated manual verification of data accuracy, improving failure detection efficiency, and ensuring the accuracy and reliability of testing critical elevator components. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the first chamber; Figure 3 This is a schematic diagram of the cross-sectional structure of the second chamber; Figure 4 A partial structural diagram of an impact crane mechanism; Figure 5 for Figure 4 A magnified structural diagram of section AA.

[0017] In the picture: 1. Testing platform; 2. Testing truss; 3. Guide slider; 4. Failure calibration ring; 5. Lifting housing; 6. Guide groove; 7. Failure detection cylinder; 8. First chamber; 9. Second chamber; 10. Impact hammer block; 11. Impact limiting groove; 12. Measuring mark plate; 13. Guide rod; 14. T-shaped clamping post; 15. Cylinder; 16. Y-type connector; 17. Semi-arc drive block; 18. Lifting clamping claw; 19. Spring fixing block; 20. Return spring; 21. Ball screw nut; 22. Ball screw; 23. Servo motor; 24. Testing positioning groove; 25. Tapered through hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, references to "embodiment," "one embodiment," "some embodiments," or "other embodiments" indicate that a specific feature, structure, or characteristic described in connection with an embodiment is included in at least some embodiments, but not necessarily all embodiments. Multiple appearances of "embodiment," "one embodiment," or "some embodiments" do not necessarily refer to the same embodiment. If the specification describes a component, feature, structure, or characteristic as "may," "may," or "can" be included, then that particular component, feature, structure, or characteristic is not required to be included. If the specification or claims refer to an element "a," it does not mean that there is only one element. If the specification or claims refer to "an additional" element, it does not exclude the existence of more than one additional element. Furthermore, specific features, structures, functions, or characteristics can be combined in one or more embodiments in any suitable manner. For example, a first embodiment can be combined with a second embodiment, provided that the specific features, structures, functions, or characteristics associated with the two embodiments are not mutually exclusive.

[0020] In the description of this utility model, unless otherwise specified, ordinal adjectives such as "first," "second," and "third" are used to describe common objects, indicating only different instances of the same object, and not implying that the objects described must be in a given order, whether temporally, spatially, sequentially, or in any other way. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0022] like Figures 1-5 As shown, this application provides a failure detection device for key mechanical components of an elevator, the device including a detection platform 1.

[0023] The testing platform 1 is equipped with a gantry-shaped testing truss 2. The middle part of the testing truss 2 is fixed with a failure calibration ring 4 by two identical guide sliders 3. The two guide sliders 3 are symmetrically welded to the side of the failure calibration ring 4. The failure calibration ring 4 is connected inside the testing adjustment mechanism.

[0024] The detection and adjustment mechanism includes a lifting housing 5. The lifting housing 5 has two guide grooves 6 that are the same size as the guide sliders 3 and are symmetrically distributed on its side. Each guide slider 3 is embedded through a guide groove 6, so that the lifting housing 5 can slide up and down on the fixed failure calibration ring 4 through the cooperation of the guide sliders 3 and the guide grooves 6.

[0025] A failure detection cylinder 7 is provided at a concentric circle inside the lifting housing 5. A first chamber 8 is formed between the failure detection cylinder 7 and the lifting housing 5, and a failure calibration ring 4 is placed in the first chamber 8. A second chamber 9 is formed inside the failure detection cylinder 7. A cylindrical impact hammer block 10 is embedded in the second chamber 9 for impact detection of the elevator buffer component. A conical through hole 25 is opened at the top of the first chamber 8 and extends through the second chamber 9.

[0026] The second chamber 9 has two symmetrical impact limiting grooves 11 on its side. Each impact limiting groove 11 is embedded with a measuring mark plate 12. The two measuring mark plates 12 are fixed to the side of the impact hammer block 10 and are also symmetrically distributed, so that the impact hammer block 10 can drive the measuring mark plate 12 to slide vertically within the impact limiting groove 11 in the second chamber 9.

[0027] It should be noted that two guide rods are installed in the first chamber, and both guide rods pass through the failure calibration ring, which makes the relative sliding between the failure lifting shell and the failure calibration ring more stable.

[0028] Furthermore, in a preferred embodiment of the present invention, the measuring mark plate 12 extends through the impact limiting groove 11 and into the first chamber 8 and is located directly above the failure calibration ring 4, and the measuring mark plate 12 and the failure calibration ring 4 can make relative contact.

[0029] Furthermore, in a preferred embodiment of the present invention, a T-shaped clamping post 13 is provided at the top of the impact limiting groove 11, the top of the T-shaped clamping post 13 is chamfered, and the T-shaped clamping post 13 can be clamped and lifted by the impact lifting mechanism.

[0030] Furthermore, in a preferred embodiment of the present invention, the impact lifting mechanism includes a cylinder 14, which is fixed to the top of the lifting housing 5, and the output rod of the cylinder 14 is connected to two semi-arc drive blocks 16 through a Y-shaped connector 15.

[0031] Furthermore, in a preferred embodiment of the present invention, the two semi-arc drive blocks 16 are symmetrically connected to each other by two hinged columns, so that an installation gap is reserved in the middle, forming a cylindrical drive component embedded in the second chamber 9.

[0032] Furthermore, in a preferred embodiment of the present invention, two symmetrically distributed lifting clamping claws 17 are installed in the installation gap, each of the lifting clamping claws 17 is hinged to a hinge post, and the sidewall of each lifting clamping claw 17 fits the conical through hole 25.

[0033] It should be noted that the side wall of the lifting gripper towards the top is designed with a 60° inclination, and its inclination angle is consistent with the inclination angle of the inner wall of the conical through hole. This allows the conical through hole to be constrained to rotate when the lifting gripper moves upward by the inclination side wall. The end of the lifting gripper is a right-angled claw hook, which can hook onto the inner groove of the T-shaped gripper.

[0034] Furthermore, in a preferred embodiment of the present invention, each of the lifting grippers 17 is provided with a spring fixing block 18 on its side, and a reset spring 19 is connected between the two spring fixing blocks 18.

[0035] Furthermore, in a preferred embodiment of the present invention, a ball screw nut 20 is embedded on the failure calibration ring 4, the ball screw nut 20 is mounted on the ball screw 21, the ball screw 21 is longitudinally connected to the first chamber 8 through a bearing, the top end of the ball screw 21 is connected to a servo motor 22, and the servo motor 22 is fixed to the top of the lifting housing 5.

[0036] It should be noted that the control terminals of both the cylinder and the servo motor are connected to the background control system for failure detection.

[0037] Furthermore, in a preferred embodiment of the present invention, the side of the failure detection cylinder 7 is printed with a buffer failure detection scale with longitudinal markings, and the buffer failure detection scale is located at the edge of the impact limiting groove 11.

[0038] It should be noted that the guide slide and the impact limiting groove are arranged parallel to each other and aligned, allowing the testing personnel to observe from the outside through the guide slide the position of the measuring mark plate stopping on the buffer failure detection scale. Furthermore, in a preferred embodiment of the present invention, the detection platform 1 is provided with a detection positioning groove 23 adapted to the shape of the elevator buffer.

[0039] The working principle of this utility model is as follows: After aligning the detection positioning groove with the elevator buffer to be tested, push the device in so that the elevator buffer contacts the innermost end of the detection positioning groove 24. At this time, the elevator buffer is directly below the detection adjustment mechanism and aligned with it. According to the elevator failure detection requirements, the failure threshold of the spring component in the elevator buffer that cannot make a rapid buffering response to the emergency rise and fall of the elevator is obtained. Based on this failure threshold, the background control system generates a command to start the servo motor 23. The output end of the servo motor 23 drives the ball screw 22 to rotate in the first chamber 8. Since the ball screw nut 21 and the failure calibration ring 4 are in a fixed state, the rotation of the ball screw 22 will be converted into the rotation of the ball screw 22 by the transmission and cooperation of the ball and the thread. The lead screw nut 21 drives it to move downward, thereby the ball screw 22 further drives the lifting housing 5 to move vertically downward. It is worth noting that the initial position of the failure calibration ring 4 after each test is completed will be reset to the bottom of the first chamber 8. At this time, the lifting housing 5 will drive the failure detection cylinder 7 to descend synchronously, so that the elevator buffer directly below is wrapped in the second chamber 9. The lifting housing 5 and the failure calibration ring 4 will move relative to each other, query the corresponding position of the failure threshold on the buffer failure detection scale, and finally stop the operation of the servo motor 23 when the upper ring surface of the failure calibration ring 4 is flush with the scale position, thus realizing the failure threshold setting effect before the detection of the buffer spring component on the elevator buffer.

[0040] When not in use, the impact hammer 10 rests at the bottom of the second chamber 9. Before testing, a test command is generated by the background control system to start the cylinder 15. The output rod of the cylinder 15 extends downward, thereby driving the lifting gripper 18 to move synchronously downward in the second chamber 9 via the semi-arc drive block 17. When the right-angle hook of the continuously moving lifting gripper 18 contacts the T-shaped gripper post 14, it will be guided by the chamfered structure at its top, causing the T-shaped gripper post 14 to further open the two lifting grippers 18 to both sides. Since the lifting grippers 18 are hinged through the hinged post, the two lifting grippers 18 will rotate in opposite directions, synchronously compressing the middle return spring 20, causing the return spring 20 to apply a return force. When the right-angle hook reaches the inner groove of the T-shaped gripper post 14, the force that opens the two sides of the lifting grippers 18 will be gradually released, so that... The reset force forces the two lifting grippers 18 to rotate back to their original position, so that the right-angle claw hooks are embedded in the inner groove, allowing the two lifting grippers 18 to work together to hook the T-shaped clamping post 14. Then, the output rod of the control cylinder 15 retracts, and the lifting grippers 18 grab the impact hammer 10 and lift it toward the top of the second chamber 9. Since the shape of the tapered through hole 25 is wide at the bottom and narrow at the top, when the side wall of the lifting grippers 18 contacts the tapered through hole 25 as it rises, the inclined side of the tapered through hole 25 will further guide the relative contraction of the two lifting grippers 18. As a result, the right-angle claw hooks that hook the T-shaped clamping post 14 are opened. At this time, the gripping restriction of the impact hammer 10 is automatically released, allowing it to fall freely inside the second chamber 9, thereby performing a high-speed impact buffering test on the elevator buffer directly below, simulating the buffering failure of the spring components in the elevator buffer during a real elevator emergency.

[0041] Springs with different buffering performances will cause the elevator buffer to have different buffering dwell points for the impact hammer 10. Therefore, this device calculates the failure rate by observing the scale data range between the final falling position of the measuring mark plate 12 on the buffer failure detection scale and the failure mark ring 4, thereby judging the difference between the buffering performance of the elevator buffer spring component and the specified failure threshold.

[0042] In summary, this invention enables automatic detection by driving the vertical lifting of the lifting housing 5 via a ball screw module. Simultaneously, it allows the failure calibration ring 4 to set a failure threshold on the lifting housing 5, providing a standardized benchmark for detecting spring failures in elevator buffers. Furthermore, by setting an impact lifting mechanism to automatically grab and release an impact hammer 10 of a certain weight for free-fall motion, it simulates the buffering performance of the elevator buffer in the event of an accidental rapid drop of the car. This allows for the detection of the mechanical failure rate of the spring components, replacing the risky process of manually removing heavy objects for impact testing. Additionally, by setting the distance between the scale position of the measuring mark plate and the failure calibration ring, the degree of spring component failure can be quickly determined, eliminating the tedious steps of repeated manual verification of data accuracy, improving failure detection efficiency, and ensuring the accuracy and reliability of testing key elevator components.

[0043] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A failure detection device for key mechanical components of an elevator, the device comprising a detection platform, characterized in that: The testing platform is equipped with a gantry-shaped testing truss. The middle part of the testing truss is fixed with a failure calibration ring by two guide sliders of the same specification. The two guide sliders are symmetrically welded to the side of the failure calibration ring. The failure calibration ring is connected inside the testing adjustment mechanism. The detection and adjustment mechanism includes a lifting housing. The lifting housing has two guide grooves that are the same size as the guide sliders and are symmetrically distributed on its side. Each guide slider is embedded through a guide groove, so that the lifting housing can slide up and down on a fixed failure calibration ring through the cooperation of the guide sliders and guide grooves. A failure detection cylinder is provided at the concentric circle inside the lifting housing. A first chamber is formed between the failure detection cylinder and the lifting housing, and a failure calibration ring is placed in the first chamber. A second chamber is formed inside the failure detection cylinder. A cylindrical impact hammer is embedded in the second chamber for impact detection of the elevator buffer component. A conical through hole is opened at the top of the first chamber and extends through the second chamber. The second chamber has two symmetrical impact limiting grooves on its side. Each impact limiting groove is embedded with a measuring mark plate. The two measuring mark plates are fixed to the side of the impact hammer block and are also symmetrically distributed, so that the impact hammer block can drive the measuring mark plate to slide vertically within the impact limiting groove in the second chamber.

2. The elevator key mechanical component failure detection device according to claim 1, characterized in that: The measuring mark plate extends through the impact limiting groove and into the first chamber, directly above the failure calibration ring, and can make relative contact with the failure calibration ring.

3. The elevator key mechanical component failure detection device according to claim 1, characterized in that: The top of the impact limiting groove is provided with a T-shaped clamping pile, the top of which is chamfered, and the T-shaped clamping pile can be clamped and lifted by the impact lifting mechanism.

4. The elevator key mechanical component failure detection device according to claim 3, characterized in that: The impact lifting mechanism includes a cylinder, which is fixed to the top of the lifting housing. The output rod of the cylinder is connected to two semi-circular drive blocks through a Y-shaped connector.

5. The elevator key mechanical component failure detection device according to claim 4, characterized in that: The two semi-circular drive blocks are symmetrically connected by two hinged columns, leaving a pre-installed installation gap in the middle, forming a cylindrical drive component that is embedded in the second chamber.

6. The elevator key mechanical component failure detection device according to claim 5, characterized in that: Two symmetrically distributed lifting grippers are installed in the installation gap. Each lifting gripper is hinged to a hinge post, and the sidewall of each lifting gripper fits into a tapered through hole.

7. The elevator key mechanical component failure detection device according to claim 6, characterized in that: Each of the lifting grippers is provided with a spring fixing block on its side, and a reset spring is connected between two spring fixing blocks.

8. The elevator key mechanical component failure detection device according to claim 1, characterized in that: A ball screw nut is embedded in the failure calibration ring. The ball screw nut is installed on the ball screw. The ball screw is longitudinally connected to the first chamber through a bearing. A servo motor is connected to the top of the ball screw. The servo motor is fixed to the top of the lifting housing.

9. The elevator key mechanical component failure detection device according to claim 1, characterized in that: The side of the failure detection cylinder is printed with a buffer failure detection scale with longitudinal markings, and the buffer failure detection scale is located at the edge of the impact limiting groove.

10. The elevator key mechanical component failure detection device according to claim 1, characterized in that: The detection platform is equipped with a detection positioning slot adapted to the shape of the elevator buffer.

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