Dynamic action performance detection device and method for elevator speed governor

Abstract

The invention discloses an elevator speed governor dynamic action performance detection device and method, and relates to the field of elevator detection.The elevator speed governor dynamic action performance detection device comprises a base, a driving wheel is arranged at the output end of a rotary driving mechanism through a speed change assembly, and detection wheels are movably arranged on fixing plates on the two sides of the bottom of the driving wheel through swing arms; a reset assembly is arranged between the two swing arms, and a guide mechanism is arranged between the swing arms and the fixing plate. The guide mechanism comprises worms which are respectively arranged in the axial directions of the two swing arms in a mirroring manner; two worm gears are arranged on the rotating shaft in a mirroring manner; according to the detection device, automatic centering and locking of the detection device and the rope wheel of the speed governor are achieved through the guide mechanism composed of the worm and the worm gear, the detection wheel which is separated from the driving wheel and is directly attached to the rope wheel in a pressed mode and the velometer of the detection wheel are arranged, and almost-non-sliding pure rolling contact is formed between the detection wheel and the rope wheel. Therefore, the real rotating speed signal of the rope wheel can be directly acquired in real time.

Description

Technical Field

[0001] This invention relates to elevator testing technology, specifically to a device and method for testing the dynamic performance of an elevator speed governor. Background Technology

[0002] The speed governor is the core safety device for elevator overspeed protection, and its performance must be calibrated regularly. Currently, portable testing instruments are commonly used for on-site testing. These instruments use a friction wheel driven by a motor, which is pressed against the speed governor's rope pulley. The friction force drives the rope pulley to rotate, and the operating speed of the rope pulley is indirectly calculated by measuring the rotational speed of the drive motor itself.

[0003] However, this friction-based detection method has a fundamental technical flaw: slippage due to factors such as pressure changes, surface conditions, or acceleration inertia cannot be avoided on the contact surface between the drive wheel and the speed governor sheave. This slippage causes the measured rotational speed of the drive wheel to be higher than the actual rotational speed of the sheave, thus introducing a systematic positive error into the final speed measurement result. This leads to distorted detection data, potentially causing a speed governor whose actual operating speed exceeds the limit (posing a safety hazard) to be mistakenly judged as qualified because the measured falsely high speed value is still within the acceptable range, seriously threatening elevator operational safety. Therefore, how to eliminate the measurement error caused by transmission slippage and achieve direct and accurate measurement of the object's rotational speed has become a pressing technical problem to be solved in this field. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for testing the dynamic performance of elevator speed governors, so as to solve the problem of systematic measurement error caused by slippage in the traditional friction drive method in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] In a first aspect, the present invention provides a dynamic action performance testing device for an elevator speed governor, comprising a base, a movable seat being provided on the top of the base via a linear drive mechanism, a fixed plate being slidably provided on the top of the movable seat, a rotary drive mechanism being provided on the top of the fixed plate, a drive wheel being provided at the output end of the rotary drive mechanism via a speed change component, detection wheels being movably provided on the fixed plates on both sides of the bottom of the drive wheel via swing arms, a reset component being provided between the two swing arms, and a guide mechanism being provided between the swing arms and the fixed plate;

[0007] The guiding mechanism includes worm gears that are mirror images of each other on the axial direction of the two swing arms. A rotating shaft is provided on the fixed plate, and two worm wheels are mirror images of each other on the rotating shaft. The two worm wheels mesh with the two worm gears respectively.

[0008] Furthermore, the linear drive mechanism includes a connecting rod movably disposed between the movable seat and the base. The movable seat is provided in two sets, and the two sets of movable seats are connected by a bidirectional lead screw thread. A slider is provided on the top of the movable seat, and a guide rod is provided on the bottom of the fixed plate. The guide rod is slidably connected to the slider.

[0009] Furthermore, a telescopic rod is movably provided between the top of the movable seat and the fixed plate, and a limit bolt is threaded on the telescopic rod.

[0010] Furthermore, the rotary drive mechanism includes a housing disposed on the top of the fixed plate, a rotary drive component disposed inside the housing, a gear cylinder disposed at the output end of the rotary drive component, a gear movably disposed inside the housing, the gear meshing with the gear cylinder, and the output end of the gear being connected to the input end of the drive wheel.

[0011] Furthermore, the transmission assembly includes a threaded rod movably disposed within the housing, a sliding block threadedly disposed on the threaded rod, a guide plate disposed on the rotary drive component, the guide plate being slidably connected to the sliding block, a guide groove obliquely disposed on the housing, a sliding rod disposed on the guide plate, and the sliding rod being slidably connected to the guide groove.

[0012] Furthermore, the reset assembly includes limiting rods movably mounted on two swing arms, a sleeve is sleeved between the two limiting rods, and an elastic element is provided between the sleeve and the limiting rods.

[0013] Furthermore, a speed measuring device is installed between the detection wheel and the swing arm.

[0014] Furthermore, both the limiting rod and the guide groove are equipped with distance detection elements.

[0015] Secondly, the present invention provides a method for detecting the dynamic performance of an elevator speed governor, employing the detection device described above, comprising:

[0016] S1. Operate the linear drive mechanism to drive the drive wheel and the two detection wheels to move toward the speed limiter rope wheel; during the downward movement, through the linkage of the guide mechanism, the fixed plate slides horizontally until the center line of the drive wheel is aligned with the center line of the rope wheel, and the two detection wheels symmetrically contact the outer circumference of the rope wheel, and finally the drive wheel presses against the rope wheel.

[0017] S2. Start the rotary drive mechanism, drive the drive wheel through the speed change component to drive the speed limiter rope wheel to rotate; at the same time, directly measure the rotation speed of the detection wheel through the speed sensor, and calculate the real-time running speed of the rope wheel accordingly.

[0018] S3. During the driving process, monitor the action signal of the speed limiter electrical switch in real time and record the first speed value when it is activated; continue driving until the speed limiter mechanical action is triggered, and record the second speed value at the moment when the speed sensor indicates a sudden drop in speed.

[0019] S4. Compare the first speed value and the second speed value with the preset standard to determine whether the speed limiter's action performance is qualified, and output the test result.

[0020] Compared with the prior art, the present invention provides an elevator speed governor dynamic motion performance testing device and method, which realizes automatic alignment and locking between the testing device and the speed governor rope wheel through a guide mechanism composed of a worm and a worm wheel. It also sets up a testing wheel and its speed measuring device that are separated from the drive wheel and directly pressed onto the rope wheel, so that the testing wheel and the rope wheel form a pure rolling contact with almost no slippage. This enables the direct and real-time acquisition of the real rotation speed signal of the rope wheel, which significantly improves the accuracy and reliability of motion speed detection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention;

[0023] Figure 2 A rear view provided for an embodiment of the present invention;

[0024] Figure 3 A bottom view provided for an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the rotary drive mechanism structure provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the guiding mechanism structure provided in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the reset component structure provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Base; 2. Movable seat; 3. Fixed plate; 4. Rotary drive mechanism; 401. Housing; 402. Gear; 403. Gear cylinder; 404. Rotary drive component; 5. Drive wheel; 6. Swing arm; 7. Detection wheel; 8. Linear drive mechanism; 801. Connecting rod; 802. Two-way lead screw; 803. Slider; 804. Telescopic rod; 805. Limit bolt; 806. Guide rod; 9. Speed ​​change assembly; 901. Guide plate; 902. Sliding block; 903. Threaded rod; 904. Slide rod; 905. Guide groove; 10. Guide mechanism; 1001. Worm gear; 1002. Rotating shaft; 1003. Worm wheel; 11. Reset assembly; 1101. Limit rod; 1102. Sleeve; 1103. Elastic component; 12. Speed ​​sensor. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] As attached Figure 1 To be continued Figure 6 As shown:

[0032] Example 1:

[0033] This invention provides a dynamic action performance testing device for an elevator speed governor, comprising a base 1, a movable seat 2 provided on the top of the base 1 via a linear drive mechanism 8, a fixed plate 3 slidably provided on the top of the movable seat 2, a rotary drive mechanism 4 provided on the top of the fixed plate 3, a drive wheel 5 provided on the output end of the rotary drive mechanism 4 via a speed change component 9, detection wheels 7 movably provided on the fixed plates 3 on both sides of the bottom of the drive wheel 5 via swing arms 6, a reset component 11 provided between the two swing arms 6, and a guide mechanism 10 provided between the swing arms 6 and the fixed plate 3;

[0034] In this embodiment, the rotary drive mechanism 4 is a drive motor, and the speed change component 9 is a gearbox.

[0035] The guide mechanism 10 includes worm gears 1001 that are mirror images of the two swing arms 6 and are axially mounted on the fixed plate 3. A rotating shaft 1002 is provided on the fixed plate 3, and two worm wheels 1003 are mirror images of the rotating shaft 1002. The two worm wheels 1003 mesh with the two worm gears 1001 respectively.

[0036] Specifically, the linear drive mechanism 8 includes a connecting rod 801 movably disposed between the movable seat 2 and the base 1. The movable seat 2 is provided with two sets, and the two sets of movable seats 2 are threadedly connected by a bidirectional lead screw 802. A slider 803 is provided on the top of the movable seat 2, and a guide rod 806 is provided on the bottom of the fixed plate 3. The guide rod 806 is slidably connected to the slider 803.

[0037] Specifically, a telescopic rod 804 is movably installed between the top of the movable seat 2 and the fixed plate 3, and a limit bolt 805 is threaded on the telescopic rod 804.

[0038] The operator rotates the bidirectional lead screw 802, driving the two movable seats 2 to move towards or away from each other. The connecting rod 801 rotates and swings synchronously, adjusting the distance between the movable seat 2 and the base 1 to achieve height adjustment. As the fixed plate 3 slides on the slider 803 via the guide rod 806, the telescopic rod 804 extends and swings synchronously, ensuring that the movable seat 2 is always connected to both ends of the fixed plate 3. After the movement is completed, rotating the limit bolt 805 limits the telescopic rod 804, preventing it from extending or moving. Thus, the relative position of the fixed plate 3 and the movable seat 2 is locked by the two telescopic rods 804, completing the position limitation.

[0039] Working principle: The operator moves the entire device next to the elevator speed governor, so that the drive wheel 5 and the two detection wheels 7 are roughly aligned with the speed governor rope wheel. The linear drive mechanism 8 is activated, which drives the movable seat 2 to move the upper fixed plate 3, drive wheel 5 and detection wheels 7 together towards the rope wheel (usually vertically downward);

[0040] During descent, due to initial alignment deviation, only one detection wheel 7 (e.g., the left side) may initially contact the outer circumference of the rotating or stationary speed limiter rope wheel. Upon contact, the detection wheel 7 is obstructed, causing its corresponding swing arm 6 to tend to swing around its hinge point. Since the worm 1001 on the swing arm 6 meshes with the worm wheel 1003 on the fixed plate 3, and at this time the other detection wheel 7 is not in contact and its corresponding worm 1001 and worm wheel 1003 pair is not under force, the two worms 1001 achieve motion coupling through the worm wheel 1003 and the rotating shaft 1002. When one side of the swing arm 6 is under force, this force is transmitted through the worm 1001 and worm wheel 1003 pair, forcing the other side of the swing arm 6 to generate a linkage. However, due to the unidirectional transmission characteristic of the worm 1001 and worm wheel 1003, this linkage manifests as a resultant force in the horizontal direction on the fixed plate 3. Specifically, the swing arm 6 on the first contact side will push the fixed plate 3 in the opposite direction, forcing the entire fixed plate 3 to slide horizontally on the movable seat 2 until the center line of the drive wheel 5 is aligned with the center line of the rope wheel.

[0041] Once the drive wheel 5 is aligned, it continues to descend, and the two detection wheels 7 will simultaneously contact the outer circumference of the rope wheel. At this time, the two swing arms 6 swing symmetrically under force, driving the two worm gears 1001 to rotate, which in turn drives the worm wheel 1003 shaft 1002 to rotate. The device continues to descend, and the drive wheel 5 finally presses against the rope wheel. The downward pressure provided by the linear drive mechanism 8 is converted into a stable positive pressure between the drive wheel 5 and the rope wheel, ensuring sufficient frictional driving force.

[0042] The rotary drive mechanism 4 is activated, transmitting power to the drive wheel 5 via the transmission assembly 9. The drive wheel 5 rotates the speed limiter rope wheel due to friction. Simultaneously, the two detection wheels 7, which are in close contact with the rope wheel, are directly driven to rotate by the rope wheel. A speed sensor 12 (e.g., a high-precision encoder) is installed on the hinge shaft between the detection wheel 7 and the swing arm 6 to directly and in real-time measure the rotational angular velocity of the detection wheel 7. Since the contact between the detection wheel 7 and the rope wheel is purely rolling (theoretically no slippage), and the diameter of the detection wheel 7 is known, the linear velocity of the outer edge of the rope wheel can be accurately calculated. Through the geometric relationship formed by the distance between the two detection wheels 7 and their relative positions to the drive wheel 5 (three points determine a circle), the effective diameter of the rope wheel can be calculated or calibrated in real time, further improving the accuracy of speed conversion.

[0043] When the speed limiter reaches its operating speed and is mechanically triggered, its pulley is instantly locked by an internal mechanism. At this moment, thanks to the pure rolling contact with the pulley and the high response frequency of the speed sensor 12, the detection wheel 7 can immediately stop following the pulley. The moment when the speed drops to zero, recorded by the speed sensor 12, is the precise moment of the speed limiter's mechanical action. This completely avoids the inherent delay and error of indirectly judging by measuring the rotational speed of the drive wheel 5, and obtains extremely accurate action timing and dynamic deceleration curves. After the test, the linear drive mechanism 8 moves in the reverse direction, lifting the entire device. The drive wheel 5 separates from the pulley, and the two detection wheels 7 also disengage. The reset assembly 11 (e.g., a tension spring) provides tension, causing the two swing arms 6 to drive the detection wheels 7 back to their initial open position, ready for the next test.

[0044] Example 2:

[0045] This embodiment is basically the same as the previous embodiment, except that the rotary drive mechanism 4 includes a housing 401 disposed on the top of the fixed plate 3, a rotary drive component 404 disposed inside the housing 401, a gear cylinder 403 disposed at the output end of the rotary drive component 404, a gear 402 movably disposed inside the housing 401, the gear 402 meshing with the gear cylinder 403, and the output end of the gear 402 connected to the input end of the drive wheel 5.

[0046] Specifically, the transmission assembly 9 includes a threaded rod 903 movably disposed within the housing 401, a sliding block 902 threadedly disposed on the threaded rod 903, a guide plate 901 disposed on the rotary drive component 404, the guide plate 901 being slidably connected to the sliding block 902, a guide groove 905 obliquely disposed on the housing 401, a slide rod 904 disposed on the guide plate 901, and the slide rod 904 being slidably connected to the guide groove 905.

[0047] The housing 401 houses a rotary drive component 404, such as a servo motor or stepper motor, which serves as a power source. A gear cylinder 403 is fixedly mounted on the output shaft of the rotary drive component 404. Inside the housing 401, a gear 402 is supported and mounted via bearings. This gear 402 meshes with the gear cylinder 403, forming a single-stage reduction and torque amplification mechanism. The output shaft of the gear 402 passes through the housing 401 and is connected to the input end of the drive wheel 5 via a coupling or directly, ultimately transmitting power to the drive wheel 5.

[0048] In this embodiment, the transmission assembly 9 is specifically designed as a mechanism capable of dynamically adjusting the transmission ratio. It includes a threaded rod 903 rotatably supported within the housing 401. A sliding block 902 is threaded onto the threaded rod 903. A guide plate 901 is fixedly connected to the housing or base of the rotary drive component 404. The guide plate 901 is slidably connected to the sliding block 902, allowing the sliding block 902 to slide along the length of the guide plate 901, but not to rotate relative to it. An inclined guide groove 905 is formed on the side wall of the housing 401. A sliding rod 904 is fixed to the guide plate 901, with its end extending into and sliding along the guide groove 905. The gear cylinder 403 is tapered, and the inclination angle of the guide groove 905 matches the inclination angle of the tapered side of the gear cylinder 403.

[0049] When it is necessary to change the output characteristics of the drive wheel 5 (such as when a larger torque is required to simulate elevator startup), the threaded rod 903 can be driven to rotate. The rotation of the threaded rod 903 causes the sliding block 902 to move along its axial direction. Since the sliding block 902 is slidably connected to the guide plate 901, the movement of the sliding block 902 will push or pull the guide plate 901 and the entire rotating drive component 404 fixed thereto, causing a slight oscillation around the meshing point of the gear 402. Because the sliding rod 904 is constrained by the inclined guide groove 905, the oscillation of the rotating drive component 404 will cause a slight change in the meshing center distance between the gear 402 and the gear cylinder 403. According to the transmission principle of the gear 402, a slight change in the center distance can adjust the backlash and contact condition of the gear pair 402, optimize the torque transmission efficiency within a certain range, and make the drive smoother.

[0050] More importantly, due to the tapered design of the gear cylinder 403, its diameter gradually increases from the front end to the rear end. During the movement driven by the threaded rod 903, it will tilt and move under the guidance of the guide groove 905, adjusting the transmission ratio between the gear cylinder 403 and the gear 402, controlling the output torque, thereby simulating different tension states of elevator wire ropes and realizing richer dynamic working condition simulation.

[0051] Example 3:

[0052] This embodiment is basically the same as the previous embodiment, except that the reset assembly 11 includes a limiting rod 1101 that is movably disposed on the two swing arms 6, a sleeve 1102 is sleeved between the two limiting rods 1101, and an elastic element 1103 is disposed between the sleeve 1102 and the limiting rod 1101.

[0053] Specifically, a speed measuring device 12 is installed between the detection wheel 7 and the swing arm 6.

[0054] Specifically, distance detection components are provided on both the limit rod 1101 and the guide groove 905.

[0055] The reset assembly 11 includes limiting rods 1101 hinged to two swing arms 6. The two limiting rods 1101 are located on a single axis, and a sleeve 1102 is fitted between them. An elastic element 1103, such as a compression spring, is provided between the portion of each limiting rod 1101 extending into the sleeve 1102 and the inner end face of the sleeve 1102. The preload of the elastic element 1103 causes the two limiting rods 1101 to tend to retract inwards, thereby applying a closing force to the two swing arms 6 through the connection point between the limiting rods 1101 and the swing arms 6. This is a mechanical automatic reset.

[0056] A speed measuring device 12, such as a high-precision photoelectric encoder or a Hall effect speed sensor, is clearly set on the hinge shaft between the detection wheel 7 and the swing arm 6 to directly measure the rotational speed of the detection wheel 7.

[0057] To monitor the device's operating status in real time, distance detection devices, such as miniature laser rangefinders, ultrasonic sensors, or linear potentiometers, are installed on the limit rod 1101 (or at the corresponding position on the swing arm 6) and near the guide groove 905. These devices are used to measure the angle between the two swing arms 6 (indirectly measured through the relative displacement of the limit rod 1101) and the speed change (reflected by the position of the slide rod 904 in the guide groove 905).

[0058] Working principle: The reset assembly 11, composed of the elastic element 1103, provides a stable and reliable reset force for the swing arm 6. After the device rises and disengages from the rope pulley, it ensures that the two detection wheels 7 close and reset quickly and symmetrically. At the same time, this structure can buffer part of the impact when the detection wheels 7 are compressed.

[0059] The distance detection component converts mechanical position information into electrical signals and transmits them to the system host (which can be integrated into the device or a separate controller). By monitoring the angle of the two swing arms 6, it can be determined whether the detection wheel 7 has symmetrically contacted the rope wheel (stable and symmetrical angle) and whether the contact force is within a reasonable range (comparison of angle change with theoretical value). If unilateral contact or abnormal contact force occurs, the system can alarm or prompt adjustment. After both detection wheels 7 and the drive wheel 5 have contacted the rope wheel, the diameter of the rope wheel is calculated.

[0060] By monitoring the position of the slide bar 904 in the guide groove 905, the adjustment status of the transmission component 9 can be confirmed, ensuring that the drive system is in the preset torque output mode.

[0061] The system host synchronously acquires the speed signal from the speed sensor 12, the position signal from the distance detection element, and signals from the electrical motion monitoring module (such as a test clip used to monitor the operation of the speed limiter's electrical switch). Through the fusion and analysis of this multi-dimensional data, not only can the precise action speed be obtained, but a composite curve of "speed-time-swing arm 6 pressure-drive torque" can also be plotted. By analyzing the vibration signals of the swing arm 6 before and after the action (acquired from the speed sensor 12 or an additional vibration sensor), the impact characteristics of the speed limiter's internal mechanical triggering can be determined, providing data support for assessing its mechanical health.

[0062] The refined design of this embodiment makes it particularly suitable for high-frequency, batch testing scenarios (such as elevator manufacturers and large maintenance companies). Its automated condition monitoring reduces reliance on operator experience and ensures consistency of test conditions for each test. Simultaneously, the abundant sensor data enables subsequent big data analysis and prediction of speed governor performance degradation, aligning with the development trends of elevator IoT and predictive maintenance.

[0063] Example 4:

[0064] This embodiment provides a method for testing the dynamic performance of an elevator speed governor, employing the testing device described above, including:

[0065] S1. Operate the linear drive mechanism 8 to drive the drive wheel 5 and the two detection wheels 7 to move toward the speed limiter rope wheel; during the downward movement, through the linkage of the guide mechanism 10, the fixed plate 3 slides horizontally until the center line of the drive wheel 5 is aligned with the center line of the rope wheel, and the two detection wheels 7 symmetrically contact the outer circumference of the rope wheel, and finally the drive wheel 5 presses against the rope wheel.

[0066] S2. Start the rotary drive mechanism 4, drive the drive wheel 5 through the speed change component 9 to drive the speed limiter rope wheel to rotate; at the same time, the speed of the detection wheel is directly measured by the speed sensor 12, and the real-time running speed of the rope wheel is calculated accordingly.

[0067] S3. During the driving process, monitor the action signal of the speed limiter electrical switch in real time and record the first speed value when it is activated; continue driving until the speed limiter mechanical action is triggered, and record the second speed value at the moment when the speed sensor 12 indicates a sudden drop in speed.

[0068] S4. Compare the first speed value and the second speed value with the preset standard to determine whether the speed limiter's action performance is qualified, and output the test results.

[0069] First speed value (electrical action speed): When the electrical action monitoring module (such as the test clamp) detects that the electrical safety switch of the speed limiter is disconnected (circuit disconnected), it simultaneously records the instantaneous rotational speed of the detection wheel 7 measured by the speed sensor 12 at this moment and converts it into the linear speed of the rope wheel. This speed value reflects the sensitivity of the electronic monitoring part of the speed limiter.

[0070] Second speed value (mechanical action speed): The drive system continues to accelerate. When the speed limiter is mechanically triggered, its pulley is momentarily locked, causing the rotational speed of the detection pulley 7 to drop sharply in a very short time (milliseconds). The speed sensor 12 (such as an encoder) captures the instant when the rotational speed begins to change abruptly (inflection point) through high-speed sampling, and converts the last stable rotational speed sample value before that moment (or the trigger instant speed calculated by curve extrapolation) into the pulley linear speed. This speed value reflects the final trigger point of the speed limiter's mechanical protection device.

[0071] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dynamic performance testing device for an elevator speed governor, comprising a base (1), characterized in that, The top of the base (1) is provided with a movable seat (2) via a linear drive mechanism (8). A fixed plate (3) is slidably provided on the top of the movable seat (2). A rotary drive mechanism (4) is provided on the top of the fixed plate (3). A drive wheel (5) is provided at the output end of the rotary drive mechanism (4) via a speed change assembly (9). Detection wheels (7) are movably provided on the fixed plate (3) on both sides of the bottom of the drive wheel (5) via swing arms (6). A reset assembly (11) is provided between the two swing arms (6). A guide mechanism (10) is provided between the swing arms (6) and the fixed plate (3). The guide mechanism (10) includes worms (1001) which are mirror images of the two swing arms (6) on the axial direction. A rotating shaft (1002) is provided on the fixed plate (3). Two worm wheels (1003) are mirror images of the rotating shaft (1002). The two worm wheels (1003) mesh with the two worms (1001) respectively.

2. The elevator speed governor dynamic action performance testing device according to claim 1, characterized in that, The linear drive mechanism (8) includes a connecting rod (801) movably disposed between the movable seat (2) and the base (1). The movable seat (2) is provided in two sets, and the two sets of movable seats (2) are threadedly connected by a two-way lead screw (802). A slider (803) is provided on the top of the movable seat (2), and a guide rod (806) is provided on the bottom of the fixed plate (3). The guide rod (806) is slidably connected to the slider (803).

3. The elevator speed governor dynamic action performance testing device according to claim 2, characterized in that, A telescopic rod (804) is movably provided between the top of the movable seat (2) and the fixed plate (3), and a limit bolt (805) is threaded on the telescopic rod (804).

4. The elevator speed governor dynamic action performance testing device according to claim 1, characterized in that, The rotary drive mechanism (4) includes a housing (401) disposed on the top of the fixed plate (3), a rotary drive component (404) is disposed inside the housing (401), a gear cylinder (403) is disposed at the output end of the rotary drive component (404), a gear (402) is movably disposed inside the housing (401), the gear (402) meshes with the gear cylinder (403), and the output end of the gear (402) is connected to the input end of the drive wheel (5).

5. The elevator speed governor dynamic action performance testing device according to claim 4, characterized in that, The transmission assembly (9) includes a threaded rod (903) movably disposed within a housing (401), a sliding block (902) threaded onto the threaded rod (903), a guide plate (901) disposed on the rotary drive component (404), the guide plate (901) being slidably connected to the sliding block (902), a guide groove (905) obliquely disposed on the housing (401), a slide rod (904) disposed on the guide plate (901), and the slide rod (904) being slidably connected to the guide groove (905).

6. The elevator speed governor dynamic action performance testing device according to claim 5, characterized in that, The reset assembly (11) includes a limiting rod (1101) movably mounted on two swing arms (6), a sleeve (1102) is sleeved between the two limiting rods (1101), and an elastic element (1103) is provided between the sleeve (1102) and the limiting rod (1101).

7. The elevator speed governor dynamic action performance testing device according to claim 1, characterized in that, A speed measuring device (12) is provided between the detection wheel (7) and the swing arm (6).

8. The elevator speed governor dynamic action performance testing device according to claim 6, characterized in that, Both the limiting rod (1101) and the guide groove (905) are equipped with distance detection components.

9. A method for testing the dynamic performance of an elevator speed governor, employing the testing device as described in any one of claims 1-8, characterized in that, include: S1. Operate the linear drive mechanism (8) to drive the drive wheel (5) and the two detection wheels (7) to move toward the speed limiter rope wheel; during the downward movement, through the linkage of the guide mechanism (10), the fixed plate (3) slides horizontally until the center line of the drive wheel (5) is aligned with the center line of the rope wheel, and the two detection wheels (7) symmetrically contact the outer circumference of the rope wheel, and finally the drive wheel (5) presses against the rope wheel; S2. Start the rotary drive mechanism (4) and drive the drive wheel (5) through the speed change assembly (9) to drive the speed limiter rope wheel to rotate; at the same time, directly measure the rotation speed of the detection wheel through the speed measuring device (12) and calculate the real-time running speed of the rope wheel accordingly. S3. During the driving process, monitor the action signal of the speed limiter electrical switch in real time and record the first speed value when it is activated; continue driving until the speed limiter mechanical action is triggered, and record the second speed value when the speed sensor (12) indicates the moment of sudden speed drop. S4. Compare the first speed value and the second speed value with the preset standard to determine whether the speed limiter's action performance is qualified, and output the test result.

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