Elevator hoisting capacity test device
By designing an elevator traction capacity testing device that includes components such as the car, counterweight, wire rope, and traction machine, and adjusting the wrap angle and deflection angle, the problem of insufficient flexibility of the existing device was solved, and the traction capacity evaluation and wire rope life test under multiple conditions were realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI MITSUBISHI ELEVATOR CO LTD
- Filing Date
- 2023-04-20
- Publication Date
- 2026-06-05
AI Technical Summary
Existing elevator traction capacity testing equipment lacks flexibility and cannot conduct comprehensive testing under various conditions. Furthermore, replacing the test elevator is an inefficient and costly method.
An elevator traction capacity testing device was designed, comprising a car, counterweight, wire rope, traction machine, load-bearing assembly, guide pulley assembly, and execution pulley assembly. The device adjusts the wrap angle and deflection angle between the wire rope and the traction sheave through the rotating assembly and the lifting assembly to achieve testing under multiple conditions.
It enables efficient adjustment of the wrap angle and deflection angle of the wire rope on the traction sheave, conducts a comprehensive evaluation of traction capacity, and takes into account the fatigue life test of elevator wire rope.
Smart Images
Figure CN116605735B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of elevators, and more particularly to an elevator traction capacity testing device. Background Technology
[0002] Theoretically, the main factors affecting elevator traction capacity are the equivalent coefficient of friction of the suspension device in the corresponding traction sheave rope groove and the wrap angle on the traction sheave, where the wrap angle is as follows: Figure 1 ,2 α As shown. During elevator design and finalization, the equivalent friction coefficient is determined through theoretical selection calculations, and then the traction capacity is verified by combining it with a fixed wrap angle. However, this design method is not necessarily reasonable; the actual equivalent friction coefficient is also affected by environmental factors (such as temperature, humidity, and dust). Furthermore, the elevator's civil engineering layout, mainly referring to the unavoidable deflection angle when the suspension device enters the traction sheave, can also adversely affect its traction capacity. This deflection angle includes, for example,... Figure 3 of β As shown. Therefore, how to verify through real-world experiments whether the traction capacity under different configuration conditions can meet the safe operation of the elevator has become a pressing problem that needs to be solved.
[0003] Currently, conducting traction capacity tests on actual elevator systems is a common practice. However, due to the limited flexibility of existing equipment, tests can only be performed under a single operating condition, failing to accommodate a wider range of testing scenarios. While replacing the test elevator can meet some requirements, this method is inefficient, costly, and unsuitable for comprehensive traction capacity evaluation testing. Summary of the Invention
[0004] The summary of this invention introduces a series of simplified concepts, all of which are simplifications of existing technologies in the field, and will be further explained in detail in the detailed description section. This summary is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0005] To solve the above-mentioned technical problems, the present invention provides an elevator traction capacity testing device, comprising: a car, a counterweight, a wire rope, a traction machine, a load-bearing component, a guide pulley assembly, and an actuator pulley assembly;
[0006] The traction machine, guide pulley assembly, and actuator pulley assembly are all fixed to the load-bearing assembly, which in turn is fixed to the building structure.
[0007] The execution pulley assembly is arranged between the traction machine and the guide pulley assembly. The car and the counterweight are connected by a steel wire rope. The steel wire rope passes through the guide pulley assembly and the execution pulley assembly and is suspended on the traction sheave of the traction machine. The guide pulley assembly has a first pulley, and the central axis of the traction sheave is parallel to the centerline axis of the first pulley.
[0008] The actuator pulley assembly includes a second pulley, a base, a rotating component, and a lifting component. The rotating component and the lifting component work together to adjust the vertical and horizontal distances between the second pulley and the central axis of the traction wheel.
[0009] Preferably, the rotating assembly includes a first motor, a rotating shaft, a first coupling, and a bracket; the rotating shaft is rigidly connected to the bracket; when the first motor is activated, it drives the rotating shaft to rotate through the first coupling, thereby causing the bracket to rotate.
[0010] Preferably, the lifting assembly includes a second motor, a transmission screw, a guide rail, a mounting frame, a load-bearing frame, and a slider; the transmission screw and the guide rail are rigidly connected to the bracket of the rotating assembly through the mounting frame; the mounting frame is fixedly connected to the load-bearing frame, and the second pulley is fixedly connected to the load-bearing frame, so that when the bracket rotates, it can drive the second pulley to rotate around the central axis of the rotation shaft; the second motor drives the transmission screw to control the load-bearing frame to move along the guide rail, and the load-bearing frame is fixedly connected to the slider.
[0011] Preferably, the actuating pulley assembly further includes an angle adjustment component, which is used to adjust the radial angle between the second pulley and the traction sheave.
[0012] Preferably, the deflection angle adjustment assembly includes a third motor, a second coupling, a drive shaft, a drive rod, a driven rod, an adapter plate, a slide rail, a connecting plate, and a pulley frame. The slide rail is mounted on both sides of the pulley frame via the connecting plate, and the second pulley is mounted inside the pulley frame. The third motor drives the drive shaft to rotate via the second coupling. The drive shaft is fixedly connected to the drive rod, the drive rod is hinged to the driven rod via a bearing, the driven rod is hinged to the adapter plate via a bearing, and the adapter plate is fixedly connected to the slide rail. The third motor and the drive shaft are mounted on the support frame. When the third motor operates, it drives the drive shaft, causing the drive rod and driven rod to move, which in turn causes the slide rail to slide relative to the slider mounted on the support frame, and causes the pulley frame and the second pulley to rotate together.
[0013] Preferably, the slide rail is arc-shaped, and the center of the second pulley coincides with the center of the slide rail.
[0014] Preferably, the pulley assembly further includes a limiting component, which comprises multiple limiting members placed on the support, the lead screw, or the slide rail to limit the movement position of the second pulley.
[0015] Compared with existing technologies, this invention can efficiently adjust the wrap angle of the wire rope on the traction sheave. α A comprehensive traction capacity evaluation test was conducted. Attached Figure Description
[0016] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the invention, supplementing the description in the specification. However, the drawings are schematic diagrams not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any of the given embodiments. The drawings should not be construed as limiting or restricting the range of numerical values or properties covered by exemplary embodiments of the invention. The invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:
[0017] Figure 1 A schematic diagram of an elevator traction capacity test device with a suspension ratio of 1:1;
[0018] Figure 2 A schematic diagram of an elevator traction capacity test device with a suspension ratio of 2:1;
[0019] Figure 3 A schematic diagram of the deflection angle of the elevator traction capacity testing device;
[0020] Figure 4 A schematic diagram of the pulley assembly.
[0021] Figure 5 This is a schematic diagram of the rotating component.
[0022] Figure 6 This is a structural schematic diagram of the lifting assembly;
[0023] Figure 7 This is a schematic diagram of the tilt angle adjustment component;
[0024] Figure 8 and Figure 9 This is a schematic diagram of the drive mechanism for the pulley and sliding rod.
[0025] Figure 10 A schematic diagram of the overall structure of the elevator traction capacity testing device after installation with a suspension ratio of 2:1;
[0026] Figure 11 A schematic diagram showing the adjustment of the vertical and horizontal distances between the second pulley and the center axis of the traction sheave for the elevator traction capacity testing device. Detailed Implementation
[0027] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.
[0028] Figure 1 The elevator traction capacity testing device of this invention adopts a 1:1 suspension ratio method, such as... Figure 1 As shown, the elevator traction capacity testing device provided in this specific embodiment includes: a car 11, a counterweight 12, a wire rope 14, a traction machine 13, a load-bearing assembly 16, a guide pulley assembly 15, and an execution pulley assembly 2.
[0029] Figure 2 The elevator traction capacity testing device of this invention adopts a 2:1 suspension ratio, such as... Figure 2 As shown, the elevator traction capacity testing device provided in this specific embodiment, compared with the 1:1 method, also includes a movable pulley assembly 17 in the car 11 and counterweight 12 to enhance the car's load-bearing capacity; the remaining structure is the same as the 1:1 method. The difference in suspension ratio does not affect the overall structure of the testing device; therefore, the following specific embodiments are described in detail.
[0030] The traction machine 13, the guide pulley assembly 15, and the execution pulley assembly 2 are all fixed on the bearing assembly 16, which is fixed to the building structure. The execution pulley assembly 2 is arranged between the traction machine 13 and the guide pulley assembly 15. The car 11 and the counterweight 12 are connected by a steel wire rope 14. The steel wire rope 14 passes through the guide pulley assembly 15 and the execution pulley assembly 2 and is suspended on the traction sheave 131 of the traction machine 13. The guide pulley assembly 15 has a first pulley 151, and the central axis of the traction sheave 131 is parallel to the centerline of the first pulley 151.
[0031] like Figure 4 As shown, the actuating pulley assembly 2 has a second pulley 23, a base 100, a rotating assembly 21 and a lifting assembly 22. The rotating assembly 21 and the lifting assembly 22 cooperate to adjust the vertical distance and horizontal distance between the second pulley 23 and the central axis of the traction wheel 131.
[0032] like Figure 5 As shown, the rotating assembly 21 includes a first motor 211, a rotating shaft 212, a first coupling (obscured in the figure and not visible), and a bracket 213; the rotating shaft 212 is rigidly connected to the bracket 213; when the first motor 211 is activated, it drives the rotating shaft 212 to rotate through the first coupling, thereby causing the bracket 213 to rotate.
[0033] like Figure 6 As shown, the lifting assembly 22 includes a second motor 221, a transmission screw 222, a guide rail 223, a mounting frame 225, a support frame 226, and a slider 227. The transmission screw 222 and the guide rail 223 are rigidly connected to the bracket 213 of the rotating assembly 21 through the mounting frame 225. The mounting frame 225 is fixedly connected to the support frame 226, and the second pulley 23 is fixedly connected to the support frame 226. When the bracket rotates, it can drive the second pulley 23 to rotate around the central axis of the rotation shaft 212. The second motor 221 drives the transmission screw 222 to control the support frame 226 to move along the guide rail 223. The support frame 226 is fixedly connected to the slider 227.
[0034] Preferably, the actuating pulley assembly 2 further includes an angle adjustment assembly 224, which is used to adjust the radial angle between the second pulley 23 and the traction sheave 131. β ,like Figure 3 As shown.
[0035] like Figure 7 As shown, the deflection angle adjustment assembly 224 includes a third motor 2241, a second coupling 2242, a drive shaft 2243, a drive rod 2244, a driven rod 2245, an adapter plate 2246, a slide rail 2247, a connecting plate 2248, and a pulley frame 2249; the slide rail 2247 is installed on both sides of the pulley frame 2249 through the connecting plate 2248, and the second pulley 23 is installed inside the pulley frame 2249.
[0036] like Figure 7 , 8 As shown in Figure 9, the third motor 2241 drives the drive shaft 2243 to rotate via the second coupling 2242; the drive shaft 2243 is fixedly connected to the drive rod 2244, the drive rod 2244 is hinged to the driven rod 2245 via a bearing, the driven rod 2245 is hinged to the adapter plate 2246 via a bearing, and the adapter plate 2246 is fixedly connected to the slide rail 2247; the third motor 2241 and the drive shaft 2243 are mounted on the support frame 226. When the third motor 2241 is activated, it drives the drive shaft, which in turn drives the drive rod 2244 and the driven rod 2245 to move, thereby causing the slide rail 2247 to slide relative to the slider 227 mounted on the support frame, and causing the pulley frame 2249 and the second pulley 23 to rotate together.
[0037] Preferably, the slide rail 2247 is arc-shaped, and the center of the second pulley 23 coincides with the center of the slide rail 2247. The working area of the slide rail is an arc-shaped circle with a uniform radius centered on the geometric center of the pulley frame projection and engages with the slider.
[0038] like Figure 4 As shown, the actuating pulley assembly also includes a limiting component, which comprises multiple limiting members 24. These limiting members 24 are respectively placed at the base 100, the transmission screw 222, or the slide rail 2248 to limit the movement position of the second pulley 23. The movable parts can be locked, and the limiting members 24 can be secured by bolts, pins, or stops.
[0039] The elevator traction capacity testing device using a 2:1 suspension ratio is installed as follows: Figure 10 As shown.
[0040] like Figure 11 As shown, the second pulley 23 of the pulley assembly 2 moves circumferentially along the central axis of the rotation shaft 212 of the rotating assembly 21, and the radius of circumferential rotation is changed by the lifting assembly 22, thereby changing the vertical and horizontal distances between the central axis of the second pulley 23 of the pulley assembly 2 and the central axis of the traction sheave 131, and thus changing the wrap angle of the elevator traction capacity testing device. α The size can be adjusted to change the test conditions of the elevator traction capacity test device.
[0041] While changing the test conditions of the elevator traction capacity test device, an angle adjustment mechanism is also installed to change the device's angle. Through the relative sliding between the slide rail 2247 and the supporting frame 226 in the angle adjustment assembly 224, the second pulley 23 of the actuator pulley assembly 2 rotates radially within a certain range, thereby changing the angle of the elevator traction capacity test device. β The size was adjusted, and the testing conditions of the elevator traction capacity testing device were changed; at the same time, the elevator traction capacity testing device can also be used for fatigue life testing of elevator wire ropes.
[0042] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that, unless explicitly defined herein, terms such as those defined in a general dictionary shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and not as having an idealized or overly formal meaning.
[0043] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.
Claims
1. An elevator traction capacity testing device, characterized in that, include: Car, counterweight, wire rope, traction machine, load-bearing components, guide pulley assembly, and actuator pulley assembly; The traction machine, guide pulley assembly, and actuator pulley assembly are all fixed to the load-bearing assembly, which in turn is fixed to the building structure. The execution pulley assembly is arranged between the traction machine and the guide pulley assembly. The car and the counterweight are connected by a steel wire rope. The steel wire rope passes through the guide pulley assembly and the execution pulley assembly and is suspended on the traction sheave of the traction machine. The guide pulley assembly has a first pulley, and the central axis of the traction sheave is parallel to the centerline axis of the first pulley. The actuator pulley assembly includes a second pulley, a base, a rotating assembly, and a lifting assembly. The rotating assembly and the lifting assembly cooperate to adjust the vertical and horizontal distances between the second pulley and the central axis of the traction wheel. The rotating assembly includes a first motor, a rotating shaft, a first coupling, and a bracket; the rotating shaft is rigidly connected to the bracket; when the first motor is activated, it drives the rotating shaft to rotate through the first coupling, thereby causing the bracket to rotate. The lifting assembly is connected to the bracket.
2. The elevator traction capacity testing device according to claim 1, characterized in that, The lifting assembly includes a second motor, a transmission screw, a guide rail, a mounting frame, a load-bearing frame, and a slider; the transmission screw and the guide rail are rigidly connected to the bracket of the rotating assembly through the mounting frame. The mounting frame is fixedly connected to the load-bearing frame, and the second pulley is fixedly connected to the load-bearing frame. When the bracket rotates, it can drive the second pulley to rotate around the central axis of the rotation shaft. The second motor drives the transmission screw to control the movement of the bearing frame along the guide rail, and the bearing frame is fixedly connected to the slider.
3. The elevator traction capacity testing device according to claim 2, characterized in that, The actuator pulley assembly also includes an angle adjustment component, which is used to adjust the radial angle between the second pulley and the traction sheave.
4. The elevator traction capacity testing device according to claim 3, characterized in that, The deflection adjustment assembly includes a third motor, a second coupling, a drive shaft, a drive rod, a driven rod, an adapter plate, a slide rail, a connecting plate, and a pulley frame; The slide rail is mounted on both sides of the pulley frame via connecting plates, and the second pulley is installed inside the pulley frame. The third motor drives the drive shaft to rotate via the second coupling. The drive shaft is fixedly connected to the drive rod, which is hinged to the driven rod via a bearing. The driven rod is hinged to the adapter plate via a bearing, and the adapter plate is fixedly connected to the slide rail. The third motor and drive shaft are mounted on the support frame. When the third motor is activated, it drives the drive shaft, which in turn moves the drive rod and the driven rod, thereby causing the slide rail to slide relative to the slider mounted on the support frame, and causing the pulley frame and the second pulley to rotate together.
5. The elevator traction capacity testing device according to claim 4, characterized in that, The slide rail is arc-shaped, and the center of the second pulley coincides with the center of the slide rail.
6. The elevator traction capacity testing device according to claim 5, characterized in that, The pulley assembly also includes a limiting component, which comprises multiple limiting members placed on the support, the lead screw, or the slide rail to limit the movement position of the second pulley.