Elevator speed limiter component testing device

Abstract

The present invention relates to the field of mechanical component testing technology, and in particular to an elevator speed limiter component testing device, comprising a vertical support frame, a positioning frame fixedly provided on the upper portion of the vertical support frame, and characterized in that: a test power unit is installed in the middle of the mounting cavity of the positioning frame, vertical test mechanisms are symmetrically installed in the mounting cavities on both sides of the test power unit, a steel wire rope is wound around each of the test power units, a linkage simulation unit is installed in the U-shaped space below the test power unit, and both sides of the linkage simulation unit are respectively connected to the steel wire ropes at corresponding positions. By adopting a method of testing two elevator speed limiters at the same time, the difference in test results displayed by the linkage simulation unit can accurately determine whether the performance of the elevator speed limiter to be tested is qualified. This comparative test method can more intuitively discover problems with the speed limiter than a single test, and helps to improve the level of product quality control.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical component testing, in particular to a device for testing a component of an elevator speed governor. Background Art

[0002] The elevator speed limiter is an essential safety device for elevators. Whether the various performances of the elevator speed limiter meet the requirements is crucial to the safety of the elevator. Therefore, it is necessary to test the stability of the elevator speed limiter after production and before leaving the factory.

[0003] A search revealed that patent authorization publication number CN216247203U discloses an adjustable elevator speed governor tester. Its main structure includes a main unit, a drive motor, a speed sensor, a base, a fixing assembly, an adjustment mounting assembly, etc. The description of the speed governor tester reveals the following deficiencies when testing elevator speed governors:

[0004] First, the friction drive of the drive motor drives the speed limiter wheel to rotate, and the speed sensor collects data and transmits it to the host computer, which completes the measurement of speed limiter parameters such as speed. This test method is limited and cannot achieve safe operation testing of the elevator speed limiter under multiple working conditions.

[0005] Second, the comparative document states that when the drive motor is running, the friction drive element uses friction to rotate the speed governor disc, thereby driving the speed governor. This simulates the actual operating state of the speed governor during elevator operation and completes various tests. This method has test accuracy issues. The friction drive method is prone to slippage, resulting in a deviation between the actual speed of the speed governor disc and the set speed. This affects the precise measurement of the speed governor parameters and reduces the accuracy of the test results.

[0006] Based on this, it can be seen that the existing elevator speed limiter tester has the problems of single test conditions and poor test accuracy when testing the elevator speed limiter before leaving the factory. Therefore, a new elevator speed limiter component testing device is proposed to better complete the safety test of the elevator speed limiter. Summary of the Invention

[0007] The present invention solves one of the above technical problems, and the technical solution adopted is: an elevator speed limiter component testing device, comprising a vertical support frame, a positioning frame fixedly provided on the upper part of the vertical support frame, a test power unit installed in the middle of the mounting cavity of the positioning frame, and vertical test mechanisms symmetrically installed in the mounting cavities on both sides of the test power unit. The top of the vertical test mechanism on the left is used to install the elevator speed limiter to be tested, and the top of the vertical test mechanism on the right is used to install the elevator speed limiter to be tested or a qualified part of the elevator speed limiter. A steel wire rope is wound around each of the test power units, and a linkage simulation unit is installed in the U-shaped space below the test power unit. The two sides of the linkage simulation unit are respectively connected to the steel wire ropes at corresponding positions. The linkage simulation unit is used to cooperate with the steel wire rope linkage and can display the difference in test results of the vertical test mechanisms on both sides.

[0008] In any of the above schemes, it is preferred that the front and rear sides of the mounting cavity of the positioning frame are open and provided with rectangular channels; the test power unit includes a torque motor fixedly mounted on a motor seat at the middle position of the mounting cavity, the motor shaft of the torque motor is connected to the speed changing and reversing component through a coupling, the two ends of the speed changing and reversing component are respectively connected to the vertical testing mechanism and are used to drive the steel wire rope thereon to operate in a tensioned state, the motor shaft of the torque motor movably passes through the axial hole of the motor bearing seat fixed in the middle of the rectangular channel on the front side and extends to the interior of the speed changing and reversing component.

[0009] In any of the above schemes, preferably, the vertical testing mechanism includes two follower rope assemblies symmetrically installed in the installation cavities on the left and right sides of the torque motor, and both ends of the follower rope assemblies are slidably engaged in the corresponding sliding grooves at the top and bottom of the rectangular channel, and the input end of each follower rope assembly is connected to the output end of the speed changing reversing component; vertically arranged rigid columns are fixed at intervals in the installation cavity on the outside of each follower rope assembly, and the rigid columns are fixedly connected to the positioning frame, and an elevator speed limiter is quickly fixed to the top seat of the rigid column, and a bottom reversing wheel group is fixedly installed at the bottom of the base of the rigid column, and the steel wire rope passes around the speed limiting rope wheel of the elevator speed limiter, the bottom reversing wheel group and is wound around the follower rope assembly in turn, and the steel wire rope is closed and in a tensioned state.

[0010] In any of the above schemes, it is preferred that the follower rope winding assembly includes a friction rope winding drum horizontally arranged on one side of the torque motor, and a steel wire rope is wound on the friction rope winding drum, the upper ends of the steel wire ropes are respectively passed around the elevator speed limiter upward, and the lower ends of the steel wire ropes are respectively passed around the bottom reversing wheel group downward and tensioned, and the two ends of the rope drum center axis of the friction rope drum are respectively movably inserted into the axial holes of the sliding bearing seat at the corresponding positions, and the upper and lower ends of the sliding bearing seat are both slidably engaged in the corresponding sliding grooves.

[0011] In any of the above schemes, it is preferred that the speed changing reversing component includes a central gear fixedly connected to the end of the motor shaft of the torque motor, and driven gears are respectively engaged on both sides of the central gear, and each driven gear is respectively fixed to the end of the rope drum center shaft on its corresponding side.

[0012] In any of the above schemes, it is preferred that the linkage simulation unit includes a rigid seat fixed in a U-shaped space below the middle part of the positioning frame, and a tension response mechanism is fixedly installed at the top center of the rigid seat. The tension response mechanism is used to test the time of the lifting trigger after the wire rope is braked and the lifting tension of the wire rope.

[0013] In any of the above schemes, it is preferred that both ends of the rigid seat are fixed at the end faces of the base, and tension reversing access mechanisms are symmetrically arranged on the left and right sides above the tension response mechanism, and a reversing steel rope is wound around each of the tension reversing access mechanisms. The lower end of each reversing steel rope is vertically fixed on the tension response mechanism, and the upper end of each reversing steel rope is fixed to the rope holding mechanism. A pressure-bearing reversing pulley is installed at the bottom of the middle section of the positioning frame, and both ends of the wheel axle of the pressure-bearing reversing pulley are movably inserted in the ear holes of the corresponding hanging ear seats, and the top of each hanging ear seat is fixed to the bottom of the positioning frame; the rope holding mechanism is used to realize the clamping and fixation of the steel wire rope on its corresponding side.

[0014] In any of the above schemes, it is preferred that when the rope holding mechanism moves following the steel wire rope, the tension borne by the rope holding mechanism is reversed by the reversing steel rope and converted into a vertical state and the corresponding end of the tension response mechanism is pulled upward.

[0015] In any of the above schemes, it is preferred that the bottom reversing wheel group includes a bottom reversing pulley arranged below the base, both ends of the wheel axle of the bottom reversing pulley are fitted and inserted into the ear holes of the corresponding bottom ear seats, each of the bottom ear seats is fixed on the base, and the wire rope passes around the lower part of the bottom reversing pulley and extends upward.

[0016] In any of the above solutions, it is preferred that the tension response mechanism adopts one of a spring-type tension buffer dynamometer with digital display, an electronic tension buffer dynamometer or a hydraulic tension buffer dynamometer.

[0017] In any of the above solutions, preferably, an alarm is installed on the upper front side wall of each rigid column, and the alarm is connected to the external controller and is activated when the elevator speed limiter is tested.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By simultaneously testing two elevator speed governors (one to be tested and one to be qualified, or both to be tested), and by comparing the differences in test results displayed by the linked simulation unit, the performance of the speed governors can be accurately determined. This comparative testing method can more intuitively identify speed governor problems than single testing, helping to improve product quality control.

[0020] 2. This device simulates the elevator speed governor at various speeds, including normal operation, overspeed braking, and linkage with the safety gear. By controlling the speed and torque of the test power unit, it simulates overspeed descents of cars with varying load capacities, comprehensively testing the elevator speed governor's performance under various conditions and providing a more reliable guarantee for safe elevator operation.

[0021] 3. The positioning frame, test power unit, and vertical test mechanism are compactly and rationally designed. The test power unit utilizes a torque motor in conjunction with a variable speed reversing component to provide stable power for elevator speed limiter testing, ensuring smooth operation of the speed limiter during testing, reducing test errors, and improving test accuracy and repeatability.

[0022] 4. The follower rope assembly, combined with the split shift electric cylinder, can flexibly control the operation and stopping of individual elevator speed governors according to test requirements, enabling independent testing of individual speed governors. This design makes the testing process more flexible, meeting diverse testing requirements and improving test efficiency. It also facilitates targeted testing and troubleshooting of specific speed governors.

[0023] 5. The linkage simulation unit accurately simulates the linkage process between the elevator speed governor and the safety gear. By tightening the wire rope through the rope-holding mechanism and transmitting the tension to the tension response mechanism using the reversing rope, the unit records data such as the braking starting point and braking length. This provides an accurate basis for evaluating the performance of the elevator speed governor and helps to promptly identify potential problems in the speed governor's linkage process.

[0024] 6. The tension response mechanism utilizes a spring-type, electronic, or hydraulic tension buffer dynamometer with a digital display. This provides intuitive readings, allowing operators to easily access test data. A variety of dynamometer types are available, allowing for adaptation to varying test requirements and elevator speed governor installation scenarios, enhancing the versatility and adaptability of the test device.

[0025] 7. Install an alarm on the rigid column and connect it to the external controller. During the elevator speed limiter test, if an abnormal situation occurs, the alarm can sound an alarm in time to remind the operator to take measures to ensure the safety of the test personnel and the normal operation of the test equipment, thereby reducing safety risks during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or components are generally identified by similar reference numerals throughout the drawings. Elements or components in the drawings are not necessarily drawn to scale.

[0027] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0029] Figure 3 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0030] Figure 4 It is a partial top view structural schematic diagram of the present invention.

[0031] Figure 5 for Figure 3 Schematic diagram of the partial main view structure after removing the elevator speed limiter and positioning frame.

[0032] Figure 6 This is a schematic diagram of a partial three-dimensional structure in which only one side of the steel wire rope is retained.

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the positioning frame of the present invention.

[0034] Parts list: 1. Vertical support frame; 2. Positioning frame; 3. Elevator speed limiter; 4. Wire rope; 5. Rectangular channel; 6. Motor seat; 7. Torque motor; 8. Coupling; 9. Motor bearing seat; 10. Rigid column; 11. Friction rope drum; 12. Sliding bearing seat; 13. Separation shift electric cylinder; 14. Bushing; 15. Center gear; 16. Driven gear; 17. Rigid seat; 18. Tension response mechanism; 19. Reversing steel rope; 20. Pressure-bearing reversing pulley; 21. Hanging ear seat; 22. C-shaped slide; 23. Friction clamping seat; 24. Rigid shaft; 25. Pneumatic clamping cylinder; 26. Bottom reversing pulley; 27. Bottom ear seat; 28. Alarm. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only used as examples and are not intended to limit the scope of protection of the present invention. Figure 1-Figure 7 As shown in .

[0036] Example 1: A device for testing elevator speed limiter components, comprising a vertical support frame 1, a positioning frame 2 fixedly provided on the upper part of the vertical support frame 1, a test power unit installed in the middle of the mounting cavity of the positioning frame 2, and vertical test mechanisms symmetrically installed in the mounting cavities on both sides of the test power unit, the top of the vertical test mechanism on the left side is used for installing the elevator speed limiter 3 to be tested, and the top of the vertical test mechanism on the right side is used for installing the elevator speed limiter 3 to be tested or a qualified part of the elevator speed limiter 3, a steel wire rope 4 is wound around each of the test power units, and a linkage simulation unit is installed in the U-shaped space below the test power unit, the two sides of the linkage simulation unit are respectively connected to the steel wire rope 4 at corresponding positions, and the linkage simulation unit is used to cooperate with the steel wire rope 4 for linkage and can display the difference in test results of the vertical test mechanisms on both sides.

[0037] The elevator speed governor component testing device designed in the present invention can be installed in an elevator speed governor workshop and is used to test the safety performance and movement stability of the assembled elevator speed governor 3 before shipment. During the test, two elevator speed governors 3 need to be installed on the top of the corresponding vertical test mechanism, and then the matching winding of the wire rope 4 is completed. After the installation is completed, the test power unit is controlled to start, so that the running speed of the elevator speed governor 3 is gradually accelerated from a low speed. Specifically, the test includes the following stages:

[0038] Normal operation: When the test power unit drives the steel rope 4, both ends of the linkage simulation unit are connected to the corresponding positions of the steel rope 4. The operation of the test power unit drives the steel rope 4 on both sides to move, thereby rotating the elevator speed governor 3 at the top of the vertical test structure. At this time, the speed is within the normal range, and the components of the elevator speed governor 3 are in their initial state and do not operate.

[0039] Mechanical brake: Because the elevator speed governor 3 under test has a centrifugal structure inside, as the test power unit speed gradually increases, the speed of the elevator speed governor 3 also increases accordingly. Under the action of centrifugal force, the centrifugal weight (or swing weight) inside the elevator speed governor 3 overcomes the spring tension or other restraining devices and begins to swing outward.

[0040] When the speed of the elevator speed limiter 3 reaches the preset monitoring speed value of the elevator speed limiter 3 (generally about 115% of the rated speed of the elevator), the centrifugal weight begins to swing outward; at this time, the speed of the test power unit is continued to increase to simulate the out-of-control scenario of the elevator car continuing to accelerate and fall. When the speed of the test power unit is further increased to the mechanical action setting value of the centrifugal weight inside the elevator speed limiter 3, the displacement of the centrifugal weight will cause the pawl inside the elevator speed limiter 3 to move, and the pawl is stuck on the ratchet, preventing the speed limiting rope sheave of the elevator speed limiter 3 from continuing to rotate; at this time, the feeler rod connected to the pawl inside the elevator speed limiter is pulled, and the feeler rod drives the pressure block to press on the wire rope 4, and the wire rope 4 is braked by friction.

[0041] Simulate the triggering of the safety clamp action: Since the wire rope 4 wrapped around the speed limiting sheave of the elevator speed governor 3 is braked, the sensor set at the current position feeds back the braking signal to the external existing external controller, and the external controller controls the linkage simulation unit to quickly clamp the wire rope 4, so that the linkage simulation unit and the wire rope 4 are fixedly connected while the speed is out of control to achieve the working condition of simulating the linkage between the wire rope 4 and the safety clamp; at this time, the control test power unit continues to rotate to simulate the state that the car is still descending (the control test power unit outputs different torques to simulate the working conditions of different elevator car internal loads). The wire ropes 4 on both sides can be linked to the linkage simulation units that are clamped and connected with them during the process of continuing to move downward, and the linkage simulation units will be triggered. At this time, the linkage simulation units will passively act, thereby realizing linkage and clamping the car track. By observing the start time and value displayed by the linkage simulation unit, the response speed of the two current elevator speed governors 3 can be effectively reflected, thereby judging whether the response of the mechanical locking structure inside the current elevator speed governor 3 can be triggered normally and whether there is an error delay.

[0042] When two elevator speed governors 3 are tested simultaneously, the difference in braking and response of the two elevator speed governors 3 can be quickly judged by observing the difference in action and display of the two tension response mechanisms 18 , and quantitative evaluation can be achieved based on the data records of the corresponding tension response mechanisms 18 .

[0043] The testing principle of the present invention is as follows: the test power unit provides traction to drive the wire rope 4 to operate, thereby driving the elevator speed governor 3 to operate, and the speed of the test power unit is controlled to simulate different operating speeds of the elevator speed governor 3; when the elevator speed governor 3 is overspeeding, its speed is monitored in real time by a sensor, and after the wire rope 4 is braked, it is promptly linked with the linkage simulation unit to simulate the working condition of triggering the safety clamp; the test power unit is controlled to continue to rotate to simulate the working condition of the car continuing to fall at an overspeed, and the linkage simulation unit is automatically activated after being pulled by the wire rope 4 to simulate the working condition of the safety clamp applying pressure and clamping force to clamp the rail and brake the car; by observing the display of the linkage simulation unit, its triggering time and braking cycle can be observed; by comparing and judging the difference in response speed of the two current elevator speed governors 3, when one of the elevator speed governors 3 is qualified, the response difference of the other elevator speed governor 3 to be tested can be reflected by comparison, and its qualification is judged according to the use requirements. If it is unqualified, it is returned to the assembly workshop for repair and adjustment.

[0044] In any of the above schemes, it is preferred that the front and rear sides of the mounting cavity of the positioning frame 2 are open and provided with rectangular channels 5; the test power unit includes a torque motor 7 fixedly mounted on a motor seat 6 at the middle position of the mounting cavity, and the motor shaft of the torque motor 7 is connected to the speed changing and reversing component through a coupling 8, and the two ends of the speed changing and reversing component are respectively connected to the vertical testing mechanism and are used to drive the steel wire rope 4 thereon to operate in a tensioned state, and the motor shaft of the torque motor 7 movably passes through the axial hole of the motor bearing seat 9 fixed in the middle of the rectangular channel 5 on the front side and extends to the interior of the speed changing and reversing component.

[0045] When the test power unit is working, the torque is output by the torque motor 7. During the rotation of the torque motor 7, the motor shaft thereof drives the speed changing and reversing component to operate. During the operation of the speed changing and reversing component, the steel wire ropes 4 on the vertical test mechanisms on the left and right sides thereof can be driven to operate simultaneously. During the operation of the steel wire ropes 4, the corresponding elevator speed limiter 3 can be driven to follow the operation.

[0046] The torque motor 7 outputs torque, and the motor shaft drives the variable speed reversing component, which in turn drives the wire ropes 4 on the vertical test mechanisms on both sides, thereby causing the elevator speed governor 3 to follow the operation. The test power unit has a compact structural design. Through the cooperation of the torque motor 7 and the variable speed reversing component, it can stably drive the elevator speed governor 3, ensuring the stability and reliability of the test.

[0047] In any of the above schemes, it is preferred that the vertical testing mechanism includes two follower rope winding assemblies symmetrically installed in the installation cavities on the left and right sides of the torque motor 7, and both ends of the follower rope winding assembly are slidably engaged in the corresponding sliding grooves at the top and bottom of the rectangular channel 5, and the input end of each follower rope winding assembly is connected to the output end of the speed change reversing component; vertically arranged rigid columns 10 are fixed at intervals in the installation cavity on the outside of each follower rope winding assembly, and the rigid columns 10 are fixedly connected to the positioning frame 2, and the elevator speed limiter 3 is quickly fixed to the top seat of the rigid column 10, and a bottom reversing wheel group is fixedly installed at the bottom of the base of the rigid column 10, and the wire rope 4 passes around the speed limiting rope wheel of the elevator speed limiter 3 and the bottom reversing wheel group in turn and is wound around the follower rope winding assembly, and the wire rope 4 is closed and in a tensioned state.

[0048] The follower rope assembly in the vertical test mechanism serves as a structure for receiving the power output by the test power unit. When the test power unit drives the speed change reversing component to operate, the rotational force is output to the follower rope assembly, driving the follower rope assembly to rotate. During the rotation of the follower rope assembly, the steel wire rope 4 is driven to operate. During the operation of the steel wire rope 4, the elevator speed limiter 3 can be pulled. During this process, the bottom reversing wheel group plays a role of reversing. When the elevator speed limiter 3 follows the rotation, the working condition of following the elevator car to fall can be simulated.

[0049] In any of the above schemes, it is preferred that the follower rope winding assembly includes a friction rope winding drum 11 horizontally arranged on one side of the torque motor 7, and a steel wire rope 4 is wound on the friction rope winding drum 11. The upper ends of the steel wire rope 4 are respectively passed around the elevator speed limiter 3 upward, and the lower ends of the steel wire rope 4 are respectively passed around the bottom reversing wheel group downward and tensioned. The two ends of the rope drum center axis of the friction rope winding drum 11 are respectively movably inserted into the axial holes of the sliding bearing seat 12 at the corresponding positions, and the upper and lower ends of the sliding bearing seat 12 are both slidably engaged in the corresponding slide groove.

[0050] The follower rope assembly receives power from the test power unit, driving the wire rope 4. The bottom reversing pulley assembly reverses the direction of the wire rope 4, which in turn pulls the elevator speed governor 3 to rotate accordingly, simulating the elevator car's descending condition. The design of the follower rope assembly and the bottom reversing pulley assembly enables the elevator speed governor 3 to more realistically simulate the actual elevator car's descending state, improving the authenticity and accuracy of the test. This simulated operation of the elevator speed governor 3 and the simulated elevator car descending condition provide a foundation for subsequent performance testing of the elevator speed governor 3 under different operating conditions.

[0051] In any of the above schemes, it is preferred that a separation shift electric cylinder 13 is arranged between the front sliding bearing seat 12 and the motor bearing seat 9, the cylinder barrel of the separation shift electric cylinder 13 is fixed on the sliding bearing seat 12, and the end of the piston rod of the separation shift electric cylinder 13 is movably connected to the outer wall of the rope drum center axis of the friction rope drum 11 through the shaft sleeve 14 fixed to its end.

[0052] By controlling the extension and contraction of the separation shift electric cylinder 13, it can be controlled to drive the sliding bearing seat 12 to move closer to or away from the motor bearing seat 9 to achieve the purpose of controlling the power connection and disconnection of the friction rope drum 11.

[0053] According to the test requirements, when only one of the motor speed limiters needs to be tested, the power of the friction rope drum 11 that does not need to be tested is controlled to be disconnected so that the current wire rope 4 and the corresponding elevator speed limiter 3 can stop running.

[0054] By controlling the extension and retraction of the separation shift electric cylinder 13, the sliding bearing seat 12 is driven toward or away from the motor bearing seat 9, and the power to the friction rope drum 11 is connected and disconnected, thereby controlling the operation and stopping of the corresponding wire rope 4 and the elevator speed governor 3. The operating state of a single elevator speed governor 3 can be flexibly controlled according to test requirements, facilitating independent testing of a specific elevator speed governor 3 and improving test flexibility and efficiency.

[0055] In any of the above schemes, it is preferred that the speed changing and reversing component includes a central gear 15 fixedly connected to the end of the motor shaft of the torque motor 7, and driven gears 16 are respectively engaged on both sides of the central gear 15, and each driven gear 16 is respectively fixed to the end of the central shaft of the rope drum on its corresponding side.

[0056] After receiving the driving force of the torque motor 7, the speed changing reversing component will drive the central gear 15 to rotate. The rotation of the central gear 15 will drive the driven gears 16 meshing on both sides of it to rotate. The rotation of the driven gear 16 will transmit the rotational force to the friction rope drum 11, and drive the friction rope drum 11 to rotate. Since the wire rope 4 is wound around the friction rope drum 11, it will drive the friction rope drum 11 to move, and then pull the elevator speed limiter 3 to follow the operation.

[0057] Controlling the extension and contraction of the separation shift electric cylinder 13 can drive the driven gear 16 to separate from the central gear 15, thereby ensuring that the power to the current follower rope assembly is cut off, so as to meet the scenario requirement of testing an elevator speed governor 3 separately.

[0058] The stable transmission and flexible control of power are realized to ensure that the elevator speed limiter 3 can operate normally for testing, and the test of a speed limiter can be stopped at any time according to the test needs.

[0059] In any of the above schemes, it is preferred that the linkage simulation unit includes a rigid seat 17 fixed in a U-shaped space below the middle of the positioning frame 2, and a tension response mechanism 18 is fixedly installed at the top center of the rigid seat 17. The tension response mechanism 18 is used to test the time of the lifting trigger after the wire rope 4 is braked and the lifting tension of the wire rope 4.

[0060] Both ends of the rigid seat 17 are fixed at the end faces of the base, and tension reversing access mechanisms are symmetrically arranged on the left and right sides above the tension response mechanism 18. A reversing steel rope 19 is wound around each of the tension reversing access mechanisms, and the lower end of each reversing steel rope 19 is vertically fixed on the tension response mechanism 18. The upper end of each reversing steel rope 19 is fixedly connected to the rope holding mechanism. A pressure-bearing reversing pulley 20 is installed at the bottom of the middle section of the positioning frame 2. Both ends of the wheel axle of the pressure-bearing reversing pulley 20 are movably inserted into the ear holes of the corresponding hanging ear seat 21, and the top of each hanging ear seat 21 is fixed to the bottom of the positioning frame 2; the rope holding mechanism is used to realize the clamping and fixation of the steel wire rope 4 on its corresponding side.

[0061] When the rope holding mechanism moves along with the steel wire rope 4, the tension borne by the rope holding mechanism is reversed by the reversing steel rope 19 and converted into a vertical state, and the corresponding end of the tension response mechanism 18 is pulled upward.

[0062] When the linkage simulation unit is triggered, the elevator speed limiter 3 will brake the wire rope 4 when it rotates at an overspeed. The signal of the wire rope 4 being braked is received by the external controller (the controller external to the HGM6310D generator set automation in the prior art can be selected) and the rope holding mechanism is immediately controlled to hold the wire rope 4 tightly. At this time, the action of simulating the wire rope 4 triggering the safety clamp can be realized; since the torque motor 7 of the test power unit continues to run to simulate the uncontrolled state of the elevator car continuing to overspeed and descend, the wire rope 4 will continue to move downward and pull the rope holding mechanism that is held therewith downward. During the downward movement of the rope holding mechanism, the reversing rope 19 follows and moves downward. When the other end of the steel rope 19 is in a vertical state, it will drive the corresponding part of the tension response mechanism 18 connected to it at its bottom to move upward. The tension response mechanism 18 can instantly record the time point when it is pulled upward and the amplitude of the upward pull, thereby simulating the starting point and braking length of the elevator car; by observing the recorded relevant data, the response time of the current elevator speed limiter 3 can be judged, because the trigger signal and time of the linkage simulation unit are determined by the time of tightening the brake wire rope 4 of the elevator speed limiter, and thus this can reflect whether the reaction speed of the centrifugal block and ratchet lock of the current elevator speed limiter 3 is qualified.

[0063] The linkage simulation unit accurately simulates the linkage process between the elevator speed governor 3 and the safety gear. By recording relevant data, the performance of the elevator speed governor 3 can be intuitively judged, improving the accuracy and reliability of the test. It simulates the linkage working conditions of the elevator speed governor 3 and the safety gear, and records the relevant data of the braking starting point and braking length, providing a key basis for judging the performance of the elevator speed governor 3.

[0064] Example 2: In any of the above schemes, it is preferred that the rope holding mechanism includes a C-shaped slide 22 that is horizontally slidably clamped in a vertical groove on the inner wall of the vertical section of the vertical support frame 1, and friction clamping seats 23 are movably provided on both sides of the wire rope 4 in the middle of the C-shaped slide 22, and a rigid shaft 24 is inserted between the two friction clamping seats 23. A reversing steel rope 19 is fixed on the rigid shaft 24, and a pneumatic clamping cylinder 25 is installed between each of the friction clamping seats 23 and the end of the C-shaped slide 22, and the end of the piston rod of each pneumatic clamping cylinder 25 is fixed on the friction clamping seat 23.

[0065] When the elevator speed limiter 3 brakes the wire rope 4, the external controller controls the two pneumatic clamping cylinders 25 to quickly drive the friction clamping seat 23 to lock the wire rope 4. When the wire rope 4 continues to move downward, it can drive the entire rope holding mechanism to move downward. The downward movement of the rope holding mechanism drives the reversing steel rope 19 to tighten and continuously pull the corresponding end of the tension response mechanism 18 upward. The data of the trigger time and the pulling amplitude are collected and recorded, thereby completing the entire process of simulating the linkage between the elevator speed limiter 3 and the safety clamp.

[0066] In any of the above schemes, it is preferred that the bottom reversing wheel group includes a bottom reversing pulley 26 arranged below the base, both ends of the wheel axle of the bottom reversing pulley 26 are fitted and inserted into the ear holes of the corresponding bottom ear seats 27, and each of the bottom ear seats 27 is fixed on the base, and the wire rope 4 passes around the lower part of the bottom reversing pulley 26 and extends upward.

[0067] The bottom reversing wheel group relies on the bottom reversing pulley 26 to achieve bottom reversal of the bypassed steel wire rope 4.

[0068] In any of the above solutions, it is preferred that the tension response mechanism 18 adopts one of a spring-type tension buffer dynamometer with digital display, an electronic tension buffer dynamometer or a hydraulic tension buffer dynamometer.

[0069] When the tension response mechanism 18 is pulled upward by the reversing steel rope 19, its internal pressure changes continuously with the continuous change of the pulling amplitude. When the set value is reached, the torque motor 7 of the test power unit is triggered to stop; the set value here is selected according to the installation scenario of the elevator speed limiter 3, so that the current set tension value can match the braking force on the elevator car track to ensure the simulation of the working condition of the safe braking car.

[0070] The digital display allows for intuitive reading of data, and different types of dynamometers can be selected based on actual needs, offering strong adaptability. Furthermore, the test power unit can be controlled to stop according to set values, ensuring safety and accuracy of the test.

[0071] In any of the above solutions, preferably, an alarm 28 is installed on the upper front side wall of each rigid column 10, and the alarm 28 is connected to the external controller and is activated when the elevator speed limiter 3 is tested.

[0072] The alarm 28 is connected to an external controller and is started when the elevator speed limiter 3 is tested. When an abnormal situation occurs, the external controller controls the alarm 28 to sound an alarm.

[0073] Working Principle: This device can conduct safety performance and motion stability tests on the elevator speed limiter 3 before delivery in the workshop. Through comparative tests, it can accurately determine whether the speed limiter is qualified, improve product quality, and reduce the safety risks of subsequent elevator operation. It can also realize comprehensive performance testing of the elevator speed limiter 3, including simulation tests of normal operation, overspeed braking, and linkage with safety clamps. It can also compare the response differences of different speed limiters, providing a basis for product quality inspection.

[0074] Specifically, the test power unit provides traction to drive the wire rope 4, which in turn drives the elevator speed governor 3. The test power unit's rotation speed is controlled to simulate different speeds of the elevator speed governor 3. When the elevator speed governor 3 exceeds speed, a sensor monitors the speed, and the wire rope 4 brakes, which then interacts with the linkage simulation unit to simulate the triggering of the safety clamp. The test power unit is controlled to continue rotating, simulating a continued overspeed descent of the elevator car. The linkage simulation unit simulates the safety clamp's clamping force, clamping the rails and braking the car. By observing the display on the linkage simulation unit and comparing the response speed differences of the two elevator speed governors 3, the qualified speed governor is determined.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that it is still possible to modify the technical solutions described in the above embodiments, or to replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any replacement improvements or changes made to the implementation methods of the present invention fall within the scope of protection of the present invention.

[0076] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. An elevator speed governor component testing device, comprising a vertical support frame, a positioning frame fixedly provided on the upper portion of the vertical support frame, characterized in that: A test power unit is installed in the middle of the installation cavity of the positioning frame, and vertical test mechanisms are symmetrically installed in the installation cavities on both sides of the test power unit. The top of the vertical test mechanism on the left is used to install the elevator speed limiter to be tested, and the top of the vertical test mechanism on the right is used to install the elevator speed limiter to be tested or the qualified part of the elevator speed limiter. A steel wire rope is wound around each of the test power units, and a linkage simulation unit is installed in the U-shaped space below the test power unit. The two sides of the linkage simulation unit are respectively connected to the steel wire ropes at corresponding positions. The linkage simulation unit is used to cooperate with the steel wire rope linkage and can display the difference in test results of the vertical test mechanisms on both sides.

2. An elevator speed governor component testing device according to claim 1, characterized in that: The front and rear sides of the mounting cavity of the positioning frame are both open and provided with rectangular channels; the test power unit includes a torque motor fixedly mounted on a motor seat in the middle position of the mounting cavity, the motor shaft of the torque motor is connected to the speed changing and reversing component through a coupling, the two ends of the speed changing and reversing component are respectively connected to the vertical testing mechanism and are used to drive the steel wire rope thereon to operate in a tensioned state, the motor shaft of the torque motor movably passes through the axial hole of the motor bearing seat fixed in the middle of the rectangular channel on the front side and extends to the interior of the speed changing and reversing component.

3. An elevator speed governor component testing device according to claim 2, characterized in that: The vertical testing mechanism includes two follower rope winding assemblies symmetrically installed in the installation cavities on the left and right sides of the torque motor, and both ends of the follower rope winding assemblies are slidably engaged in the corresponding sliding grooves at the top and bottom of the rectangular channel, and the input end of each follower rope winding assembly is connected to the output end of the speed change reversing component; vertically arranged rigid columns are fixed at intervals in the installation cavity on the outside of each follower rope winding assembly, and the rigid columns are fixedly connected to the positioning frame, and an elevator speed limiter is quickly fixed to the top seat of the rigid column, and a bottom reversing wheel group is fixedly installed at the bottom of the base of the rigid column, and the steel wire rope passes around the speed limiting rope wheel of the elevator speed limiter and the bottom reversing wheel group in turn and is wound around the follower rope winding assembly, and the steel wire rope is closed and in a tensioned state.

4. The elevator speed governor component testing device according to claim 3, characterized in that: The follower rope winding assembly includes a friction rope winding drum horizontally arranged on one side of the torque motor, and a steel wire rope is wound on the friction rope winding drum. The upper ends of the steel wire ropes are respectively passed around the elevator speed limiter upward, and the lower ends of the steel wire ropes are respectively passed around the bottom reversing wheel group downward and tensioned. The two ends of the rope drum center axis of the friction rope drum are respectively movably inserted into the axial holes of the sliding bearing seat at the corresponding positions, and the upper and lower ends of the sliding bearing seat are both slidably engaged in the corresponding sliding grooves.

5. The elevator speed governor component testing device according to claim 4, characterized in that: The speed change reversing component includes a central gear fixedly connected to the end of the motor shaft of the torque motor, and driven gears are respectively engaged on both sides of the central gear, and each driven gear is respectively fixed to the end of the rope drum central shaft on its corresponding side.

6. The elevator speed governor component testing device according to claim 5, characterized in that: The linkage simulation unit includes a rigid seat fixed in the U-shaped space below the middle of the positioning frame, and a tension response mechanism is fixedly installed at the top center of the rigid seat. The tension response mechanism is used to test the time of the lifting trigger after the wire rope is braked and the lifting tension of the wire rope; Both ends of the rigid seat are fixed at the end faces of the base, and tension reversing access mechanisms are symmetrically arranged on the left and right sides above the tension response mechanism, and a reversing steel rope is wound around each of the tension reversing access mechanisms. The lower end of each reversing steel rope is vertically fixed to the tension response mechanism, and the upper end of each reversing steel rope is fixed to the rope holding mechanism. A pressure-bearing reversing pulley is installed at the bottom of the middle section of the positioning frame, and both ends of the wheel axle of the pressure-bearing reversing pulley are movably inserted into the ear holes of the corresponding hanging ear seats, and the top of each hanging ear seat is fixed to the bottom of the positioning frame; the rope holding mechanism is used to realize the clamping and fixation of the steel wire rope on its corresponding side; When the rope holding mechanism moves along with the steel wire rope, the tension borne by the rope holding mechanism is reversed by the reversing steel wire rope and converted into a vertical state, and the corresponding end of the tension response mechanism is pulled upward.

7. The elevator speed governor component testing device according to claim 6, characterized in that: The bottom reversing wheel group includes a bottom reversing pulley arranged below the base, both ends of the wheel axle of the bottom reversing pulley are fitted and inserted into the ear holes of the corresponding bottom ear seats, each of the bottom ear seats is fixed on the base, and the wire rope passes around the lower part of the bottom reversing pulley and extends upward.

8. The elevator speed governor component testing device according to claim 7, characterized in that: The tension response mechanism adopts one of a spring type tension buffer dynamometer with digital display, an electronic type tension buffer dynamometer or a hydraulic type tension buffer dynamometer.

9. The elevator speed governor component testing device according to claim 8, characterized in that: An alarm is installed on the upper front side wall of each rigid column. The alarm is connected to an external controller and is activated when the elevator speed limiter is tested.

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