Elevator speed governor part testing device

Abstract

The invention relates to the technical field of mechanical part testing, in particular to an elevator speed governor part testing device which comprises a vertical supporting frame, and a positioning frame is fixedly arranged on the upper portion of the vertical supporting frame, and is characterized in that a testing power unit is installed in the middle of an installation cavity of the positioning frame; vertical testing mechanisms are symmetrically mounted in the mounting cavities on the two sides of the testing power units, steel wire ropes are wound on the testing power units, a linkage simulation unit is mounted in the U-shaped space below the testing power units, and the two sides of the linkage simulation unit are connected with the steel wire ropes at the corresponding positions respectively. By adopting a mode of testing the two elevator speed limiters at the same time, whether the performance of the elevator speed limiter to be tested is qualified or not can be accurately judged through the test result difference displayed by the linkage simulation unit. Compared with a single test, the comparison test method has the advantages that the problems of the speed governor can be more intuitively found, and the product quality control level can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical component testing, in particular to a device for testing a speed governor component of an elevator. 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] After searching, the patent with the patent authorization announcement number CN216247203U discloses an adjustable elevator speed limiter tester, whose main structure includes a main unit, a drive motor, a speed sensor, a base, a fixing component, an adjustment installation component, etc.; through the records of the speed limiter tester, it can be seen that it has the following deficiencies when testing the elevator speed limiter: 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. The host completes the measurement of speed limiter speed and other parameters. This test method is limited and cannot achieve safe operation test of the elevator speed limiter under multiple working conditions.

[0004] Second, the reference document states that when the drive motor is running, the friction drive uses friction to drive the speed limiter disc to drive the speed limiter, thereby simulating the actual working state of the speed limiter when the elevator is running, and then completing various tests. This method has test accuracy problems. The friction drive method is prone to slippage, resulting in a deviation between the actual speed of the speed limiter disc and the set speed, affecting the precise measurement of the speed limiter speed parameters and reducing the accuracy of the test results.

[0005] 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

[0006] 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 is fixedly provided on the upper part of the vertical support frame, 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 side is used to install the elevator speed limiter to be tested, and the top of the vertical test mechanism on the right side is used to install the elevator speed limiter to be tested or the qualified parts 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, and 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.

[0007] 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.

[0008] In any of the above schemes, it is preferred that the vertical testing mechanism comprises two follower rope winding assemblies which are 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 changing reversing component; vertically arranged rigid columns are fixedly arranged in the installation cavities on the outer sides of each follower rope winding assembly at intervals, the rigid columns are fixedly connected to the positioning frame, and an elevator speed limiter is quickly fixedly connected to the top seat of the rigid columns, and a bottom reversing wheel group is fixedly installed at the bottom of the base of the rigid column, the steel wire rope passes around the speed limiting rope wheel of the elevator speed limiter, 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.

[0009] 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, a steel wire rope is wound on the friction rope winding drum, the upper ends of the steel wire rope are respectively passed around the elevator speed limiter upward, and the lower ends of the steel wire rope 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 winding drum are respectively movably inserted into the axial holes of the sliding bearing seat at corresponding positions, and the upper and lower ends of the sliding bearing seat are both slidably clamped in the corresponding sliding groove.

[0010] In any of the above schemes, it is preferred 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 center axis on its corresponding side.

[0011] 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 lifting trigger after the wire rope is braked and the lifting tension of the wire rope.

[0012] In any of the above schemes, it is preferred that both ends of the rigid seat are fixed at the end surface of the base, and tension reversing access mechanisms are symmetrically arranged on the left and right sides above the tension response mechanism, and each of the tension reversing access mechanisms is wound with a reversing steel rope, and 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 fixedly connected to the rope holding mechanism, and 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.

[0013] 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.

[0014] In any of the above schemes, preferably, 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.

[0015] In any of the above schemes, it is preferred that the tension response mechanism adopts one of a spring tension buffer dynamometer with digital display, an electronic tension buffer dynamometer or a hydraulic tension buffer dynamometer.

[0016] In any of the above schemes, preferably, an alarm is installed on the upper front side wall of each of the rigid columns, and the alarm is connected to the external controller and is activated when the elevator speed limiter is tested.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. By testing two elevator speed limiters (one is the test piece, the other is the qualified piece or two test pieces) at the same time, the performance of the elevator speed limiter to be tested can be accurately judged by the difference in test results displayed by the linkage simulation unit. This comparative test method can more intuitively find the speed limiter problem than a single test, which helps to improve the product quality control level.

[0018] 2. This device can simulate the state of the elevator speed limiter at different operating speeds, including normal operation, overspeed braking, and linkage with safety clamps. By controlling the speed and torque of the test power unit, it can simulate the overspeed fall of cars with different load capacities, comprehensively detect the performance of the elevator speed limiter under various conditions, and provide more reliable protection for the safe operation of the elevator.

[0019] 3. The structural design of the positioning frame, test power unit, vertical test mechanism, etc. is compact and reasonable. The test power unit uses a torque motor and a variable speed reversing component to provide stable power for the elevator speed limiter test, ensuring that the elevator speed limiter runs smoothly during the test, reducing test errors, and improving test accuracy and repeatability.

[0020] 4. The follow-up rope assembly cooperates with the separation shift electric cylinder to flexibly control the operation and stop of a single elevator speed limiter according to the test needs, and realize the function of testing a certain elevator speed limiter separately. This design makes the test process more flexible, can meet different test requirements, improve test efficiency, and also facilitate targeted testing and troubleshooting of specific speed limiters.

[0021] 5. The linkage simulation unit can accurately simulate the linkage process between the elevator speed limiter and the safety clamp. The wire rope is held tightly by the rope holding mechanism, the tension is transmitted to the tension response mechanism by the reversing steel rope, and the data such as the braking starting point and braking length are recorded, which provides an accurate basis for evaluating the performance of the elevator speed limiter and helps to timely discover possible problems in the linkage link of the speed limiter.

[0022] 6. The tension response mechanism uses a spring-type, electronic or hydraulic tension buffer dynamometer with digital display, which has the advantage of intuitive readings and is convenient for operators to obtain test data in a timely manner. At the same time, a variety of types of dynamometers are available, which can be adapted according to different test requirements and installation scenarios of elevator speed limiters, improving the versatility and adaptability of the test device.

[0023] 7. Install an alarm on the rigid column and connect it to the external controller. During the elevator speed limiter test, once 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 testers and the normal operation of the test equipment, and reduce the safety risks during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn according to the actual scale.

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0028] Figure 4 It is a partial top view of the structure of the present invention.

[0029] Figure 5 for Figure 3 Schematic diagram of the partial main view structure after removing the elevator speed limiter and positioning frame.

[0030] 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.

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the positioning frame of the present invention.

[0032] 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

[0033] The following is a detailed description of the embodiments of the technical solution of the present invention in conjunction with 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 cannot be used to limit the scope of protection of the present invention. Figure 1-Figure 7 as shown in .

[0034] Embodiment 1: A device for testing components of an elevator speed limiter comprises a vertical support frame 1, a positioning frame 2 is fixedly provided on the upper part of the vertical support frame 1, a test power unit is installed in the middle of the mounting cavity of the positioning frame 2, vertical test mechanisms are 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, 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, a linkage simulation unit is installed in the U-shaped space below the test power unit, both sides of the linkage simulation unit are respectively connected to the steel wire rope 4 at corresponding positions, the linkage simulation unit is used to cooperate with the steel wire rope 4 in linkage and can display the difference in test results of the vertical test mechanisms on both sides.

[0035] The elevator speed limiter component testing device designed in the present invention can be installed in the elevator speed limiter workshop, and is used to test the safety performance and motion stability of the assembled elevator speed limiter 3 to be shipped before delivery; when testing, it is necessary to install the two elevator speed limiters 3 on the top of the corresponding vertical test mechanism, and then complete the matching winding of the wire rope 4. After the installation is completed, the control test power unit is started, so that the running speed of the elevator speed limiter 3 is gradually accelerated from a low speed, which specifically includes the following stages: Normal operation state: When the test power unit drives the steel wire rope 4 to operate normally, both ends of the linkage simulation unit are connected to the steel wire rope 4 at the corresponding positions, and the operation of the test power unit drives the steel wire rope 4 on both sides to move, thereby causing the elevator speed limiter 3 on the top of the vertical test mechanism to rotate. At this time, the speed is within the normal range, and the various components of the elevator speed limiter 3 are in the initial state and do not move.

[0036] Mechanical brake: Because the elevator speed limiter 3 to be tested has a centrifugal structure inside, when the speed of the test power unit gradually increases, the speed of the elevator speed limiter 3 also increases accordingly. Under the action of centrifugal force, the centrifugal block (or throw block) inside the elevator speed limiter 3 overcomes the spring tension or other restraint device restrictions and begins to swing outward.

[0037] 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 block begins to swing outward; at this time, the rotation speed of the test power unit is continued to increase to simulate the out-of-control scenario in which the elevator car continues to accelerate and fall. When the speed of the test power unit is further increased to the mechanical action setting value of the centrifugal block inside the elevator speed limiter 3, the displacement of the centrifugal block will cause the pawl inside the elevator speed limiter 3 to move, and the pawl is stuck on the ratchet wheel, preventing the speed limiting rope wheel 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.

[0038] Simulate the triggering of the safety clamp action: Since the wire rope 4 wound around the speed limiting rope wheel of the elevator speed limiter 3 is braked, the sensor set at the current position feeds back the brake 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 of 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 going down (the control test power unit outputs different torques to simulate the working condition of the internal load of the elevator car), and the wire ropes 4 on both sides can be linked to the linkage simulation unit that is clamped and connected with them in the process of continuing to move downward, and the linkage simulation unit will be triggered. At this time, the linkage simulation unit will passively act, thereby realizing linkage and clamping the car track. By observing the start time and value displayed by the linkage simulation unit, it can effectively reflect the speed of the response of the two current elevator speed limiters 3, so as to judge whether the response of the mechanical locking structure inside the current elevator speed limiter 3 can be triggered normally and whether there is an error delay.

[0039] When two elevator speed limiters 3 are tested simultaneously, the braking and response differences of the two elevator speed limiters 3 can be quickly judged by observing the action differences and display differences 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.

[0040] The testing principle of the present invention is as follows: the test power unit provides traction to drive the steel wire rope 4 to operate, and then drives the elevator speed limiter 3 to operate, and the speed of the test power unit is controlled to control the elevator speed limiter 3 to simulate different operating speeds; when the elevator speed limiter 3 is overspeeding, its speed is monitored in real time by a sensor, and after the steel wire rope 4 is braked, it is promptly linked with the linkage simulation unit to achieve the working condition simulation of triggering the safety clamp; the test power unit is controlled to continue to rotate to simulate the working condition that the car continues to fall at an overspeed, and the linkage simulation unit is pulled by the steel wire rope 4 and starts itself to simulate the working condition that the safety clamp applies pressure and clamping force to clamp the track brake 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 the response speeds of the two current elevator speed limiters 3, when one of them is a qualified part of the elevator speed limiter 3, the response difference of the other elevator speed limiter 3 to be tested can be reflected by comparison, and whether it is qualified is judged according to the use requirements, and when it is unqualified, it is returned to the assembly workshop for maintenance and adjustment.

[0041] 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, the motor shaft of the torque motor 7 is connected to the speed changing and reversing component through a coupling 8, 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, 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.

[0042] 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 drives the speed change reversing component to operate. During the operation of the speed change reversing component, the steel wire ropes 4 on the vertical test mechanisms on the left and right sides 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.

[0043] The torque motor 7 outputs torque, the motor shaft drives the speed change reversing component to operate, and the speed change reversing component drives the steel wire rope 4 on the vertical test mechanisms on both sides to operate, so that the elevator speed limiter 3 follows the operation. The test power unit has a compact structure design, and through the cooperation of the torque motor 7 and the speed change reversing component, the elevator speed limiter 3 can be stably driven to operate, ensuring the stability and reliability of the test.

[0044] 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 fixedly arranged in the installation cavity on the outside of each follower rope winding assembly at intervals, and the rigid columns 10 are fixedly connected to the positioning frame 2, and an elevator speed limiter 3 is quickly fixedly connected 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.

[0045] 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 will be 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, it can simulate the working condition of following the elevator car to fall.

[0046] 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, and 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 clamped in the corresponding sliding groove.

[0047] The follow-up rope assembly receives the power of the test power unit, drives the wire rope 4 to operate, and the bottom reversing wheel group realizes the reversal of the wire rope 4, thereby pulling the elevator speed limiter 3 to follow the rotation, simulating the elevator car falling condition. The design of the follow-up rope assembly and the bottom reversing wheel group enables the elevator speed limiter 3 to more realistically simulate the actual car falling state in operation, improving the authenticity and accuracy of the test. The simulated operation drive of the elevator speed limiter 3 is realized, and the car falling condition is simulated at the same time, providing a basis for subsequent testing of the performance of the elevator speed limiter 3 under different working conditions.

[0048] 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 sleeved on the outer wall of the rope drum center axis of the friction rope drum 11 through a shaft sleeve 14 fixed to its end.

[0049] By controlling the extension and retraction of the separation shift electric cylinder 13, it can be controlled to drive the sliding bearing seat 12 to approach or move away from the motor bearing seat 9 to achieve the purpose of controlling the power connection and disconnection of the friction rope drum 11.

[0050] 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 can be controlled to disconnect so that the current wire rope 4 and the corresponding elevator speed limiter 3 can stop running.

[0051] By controlling the extension and retraction of the separation shift electric cylinder 13, the sliding bearing seat 12 is driven to approach or move away from the motor bearing seat 9, so as to realize the connection and disconnection of the power of the friction rope drum 11, thereby controlling the operation and stop of the corresponding wire rope 4 and the elevator speed limiter 3. The operation state of a single elevator speed limiter 3 can be flexibly controlled according to the test requirements, so as to facilitate the separate testing of a certain elevator speed limiter 3 and improve the flexibility and efficiency of the test.

[0052] In any of the above schemes, it is preferred that the speed change 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 axis of the rope drum on its corresponding side.

[0053] 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 to rotate. The rotation force is transmitted to the friction rope drum 11 through the rotation of the driven gear 16, and the friction rope drum 11 is driven to rotate. Since the wire rope 4 is wound around the friction rope drum 11, the friction rope drum 11 is driven to move, thereby pulling the elevator speed limiter 3 to follow the operation.

[0054] Controlling the extension and retraction 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 winding assembly is cut off to meet the scenario needs of testing an elevator speed limiter 3 separately.

[0055] 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 certain speed limiter can be stopped at any time according to the test needs.

[0056] 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 part 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.

[0057] 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, and each of the tension reversing access mechanisms is wound with a reversing steel rope 19, and the lower end of each reversing steel rope 19 is vertically fixed on the tension response mechanism 18, and the upper end of each reversing steel rope 19 is fixedly connected to the rope holding mechanism, and a pressure-bearing reversing pulley 20 is installed at the bottom of the middle section of the positioning frame 2, and both ends of the wheel axle of the pressure-bearing reversing pulley 20 are movably inserted in 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.

[0058] When the rope holding mechanism moves following 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.

[0059] When the triggering condition of the linkage simulation unit is met, 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 outside 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 tightly held with it to move downward. During the downward movement of the rope holding mechanism, the reversing rope 19 follows and moves downward. The other end of the steel rope 19 is in a vertical state, at which time the corresponding part of the tension response mechanism 18 connected to it at the bottom will be driven to move upward, and the tension response mechanism 18 can instantly record the time point when it is pulled upward, and at the same time record the amplitude of being pulled upward, thereby simulating the starting point and braking length of the elevator car; the response time of the current elevator speed limiter 3 can be determined by observing the recorded relevant data, because the trigger signal and time of the linkage simulation unit are determined by the time of the elevator speed limiter braking wire rope 4, and thus it can reflect whether the reaction speed of the centrifugal block and ratchet lock of the current elevator speed limiter 3 is qualified.

[0060] The linkage simulation unit can accurately simulate the linkage process between the elevator speed limiter 3 and the safety clamp. By recording relevant data, the performance of the elevator speed limiter 3 can be intuitively judged, improving the accuracy and reliability of the test. It can simulate the linkage working conditions between the elevator speed limiter 3 and the safety clamp, record the braking starting point and braking length related data, and provide a key basis for judging the performance of the elevator speed limiter 3.

[0061] Embodiment 2: In any of the above schemes, it is preferred that the rope holding mechanism includes a C-shaped slide 22 which 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 steel 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, and 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.

[0062] 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 be tightened and continuously pulls 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.

[0063] 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, each of the bottom ear seats 27 is fixed on the base, and the wire rope 4 is passed around the lower part of the bottom reversing pulley 26 and extends upward.

[0064] The bottom reversing wheel group relies on the bottom reversing pulley 26 to achieve bottom reversal of the bypassed steel wire rope 4.

[0065] In any of the above solutions, it is preferred that the tension response mechanism 18 adopts one of a spring tension buffer dynamometer with digital display, an electronic tension buffer dynamometer or a hydraulic tension buffer dynamometer.

[0066] 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.

[0067] The digital display function is convenient and intuitive to read data. Different types of dynamometers can be selected according to actual needs, with strong adaptability. At the same time, the test power unit can be controlled to stop according to the set value to ensure the safety and accuracy of the test.

[0068] In any of the above solutions, preferably, an alarm 28 is installed on the upper front side wall of each of the rigid columns 10, and the alarm 28 is connected to the external controller and is activated when the elevator speed limiter 3 is tested.

[0069] The alarm 28 is connected to an external controller and is activated when the elevator speed limiter 3 is tested. When an abnormal situation occurs, the external controller controls the alarm 28 to sound an alarm.

[0070] Working principle: This device can test the safety performance and motion stability of the elevator speed limiter 3 before it leaves the factory in the workshop. Through comparative testing, it can accurately determine whether the speed limiter is qualified, improve product quality, and reduce the safety risk of subsequent elevator operation; it can realize comprehensive performance testing of the elevator speed limiter 3, including simulation tests of normal operation, overspeed braking, and linkage with safety clamps, and can also compare the response differences of different speed limiters to provide a basis for product quality inspection.

[0071] The details are as follows: the test power unit provides traction to drive the steel wire rope 4 to operate, and then drives the elevator speed limiter 3 to operate. The speed of the test power unit is controlled to simulate the different operating speeds of the elevator speed limiter 3. When the elevator speed limiter 3 is overspeeding, the sensor monitors the speed, and the steel wire rope 4 is braked and linked with the linkage simulation unit to simulate the triggering of the safety clamp action. The test power unit is controlled to continue to rotate to simulate the car continuing to fall at an overspeed. The linkage simulation unit simulates the safety clamp to apply pressure and clamp force to clamp the track to brake the car. By observing the display of the linkage simulation unit and comparing the difference in the response speed of the two elevator speed limiters 3, it is determined whether the speed limiter to be tested is qualified.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any replacement, improvement or change made to the implementation mode of the present invention falls within the protection scope of the present invention.

[0073] The matters not described in detail in the present invention are all 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 is fixedly provided on the upper part 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 a qualified part of the elevator speed limiter. Steel wire ropes are 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. Both 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 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.

3. An elevator speed governor component testing device according to claim 2, characterized in that: The vertical testing mechanism comprises two follower rope winding assemblies which are 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 fixedly arranged in the installation cavities on the outer sides of each follower rope winding assembly at intervals, the rigid columns are fixedly connected to the positioning frame, and an elevator speed limiter is quickly fixedly connected to the top seat of the rigid columns, and a bottom reversing wheel group is fixedly installed at the bottom of the base of the rigid column, 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. An 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, 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 winding 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 clamped in the corresponding sliding grooves.

5. An 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. An elevator speed governor component testing device according to claim 5, characterized in that: The linkage simulation unit includes a rigid seat fixedly arranged in a 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, and the tension response mechanism is used to test the lifting trigger time of the wire rope after being braked and the lifting tension of the wire rope; Both ends of the rigid seat are fixed at the end surface of the base, and tension reversing access mechanisms are symmetrically arranged on the left and right sides above the tension response mechanism, and each of the tension reversing access mechanisms is wound with a reversing steel rope, and 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 fixing 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 rope and converted into a vertical state, and the corresponding end of the tension response mechanism is pulled upward.

7. An 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 through the lower part of the bottom reversing pulley and extends upward.

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

9. An 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 the external controller and is activated when the elevator speed limiter is tested.

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