Traction belt testing device and method
By designing a traction belt testing device to simulate the load state and wrap angle of the traction belt, the testing steps are simplified, the cost is reduced, the problems of complex and expensive testing in existing technologies are solved, and a more uniform tension distribution is achieved.
Patent Information
- Application Number
- CN202610284071.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-10
- Publication Date
- 2026-04-14
AI Technical Summary
Existing technologies are costly to test the friction and lifespan between the traction belt and the traction sheave, and require the construction of the same test model to simulate the elevator traction machine, making the test complex and expensive.
A traction belt testing device was designed, including a base, a stand, a platform, a load rack, a counterweight rack, a load body, a counterweight body, a tension gauge, a traction wheel axle, a load wheel axle, a counterweight wheel axle, and a pressure roller. By simulating the load state and wrap angle of the traction belt, the construction of the testing device is simplified, and it can be adapted to the testing needs of different scenarios.
It reduces the cost of traction belt testing, expands the applicability of the testing device, simplifies the testing steps, and makes the tension distribution on both sides of the traction belt more uniform.
Smart Images
Figure CN121849762A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of traction belt testing technology, and in particular to a traction belt testing device and method. Background Technology
[0002] Traction elevators are a common type of elevator that relies on the friction between the traction belt and the traction sheave to drive the car and counterweight up and down. During the car's ascent and descent, there must be sufficient friction between the traction belt and the traction sheave; otherwise, the traction belt will slip on the traction sheave, causing the elevator to malfunction and fail to operate safely.
[0003] In order to ensure the normal and safe operation of the elevator, a test model that is exactly the same as the elevator traction machine needs to be built during the production process of the traction elevator to test the friction between the traction belt and the traction sheave and the life of the traction belt, which results in high testing costs for the traction belt. Summary of the Invention
[0004] To facilitate the testing of the friction coefficient and lifespan of traction belts, this application provides a traction belt testing device and method.
[0005] The traction belt testing device provided in this application adopts the following technical solution: A traction belt testing device includes a base, on which a set of stands are fixedly mounted. A platform is commonly mounted on the top of the stands. A weight rack and a counterweight rack are slidably mounted between the stands. The weight rack is detachably connected to one end of the traction belt, and the counterweight rack is detachably connected to the other end of the traction belt. A weight body is detachably mounted on the weight rack, and a counterweight body is detachably mounted on the counterweight rack. A tension gauge is connected between the counterweight body and the base. A traction wheel axle is rotatably mounted between the stands, located between the weight rack and the counterweight rack. A weight wheel axle and a counterweight wheel axle are rotatably mounted on the platform. The traction wheel axle, weight wheel axle, and counterweight wheel axle are all for the traction belt to wind around. A pressure roller is detachably mounted between the stands, and the pressure roller is used to abut against the traction belt.
[0006] By adopting the above technical solution, the traction belt to be tested is sequentially wound around the traction wheel axle, the load wheel axle, and the counterweight wheel axle to form a stable transmission path. Both ends of the traction belt are detachably connected to the load frame and the counterweight frame, respectively. By assembling the load body on the load frame and the counterweight body on the counterweight frame, the load state of the traction belt in actual operation is simulated. The detachable pressure rollers between the test benches can selectively abut against the traction belt, adjusting the contact wrap angle between the traction belt and the traction wheel axle. This adapts to different traction belt test scenarios, reduces the need to build the same test model to simulate elevator traction machines, simplifies the setup steps of the test device, and reduces the cost of traction belt testing.
[0007] Preferably, the load wheel axle and the counterweight wheel axle are symmetrically arranged above the traction wheel axle, and the axes of the load wheel axle, the counterweight wheel axle, and the traction wheel axle are parallel to each other.
[0008] By adopting the above technical solution, the tension distribution on both sides of the traction belt is made more uniform.
[0009] Preferably, a drive motor is fixedly mounted on the base, and the output shaft of the drive motor is used to connect to the traction wheel shaft.
[0010] By adopting the above technical solution, the rotation of the traction wheel shaft is controlled by a drive motor.
[0011] Preferably, a weight guide rail and a counterweight guide rail are fixedly arranged on opposite surfaces of the platform. The weight guide rail and the counterweight guide rail are symmetrically arranged on both sides of the traction wheel shaft. The weight guide rails are arranged opposite to each other, and the counterweight guide rails are arranged opposite to each other. The weight frame is slidably arranged between the weight guide rails, and the counterweight frame is slidably arranged between the counterweight guide rails.
[0012] By adopting the above technical solution, the heavy object guide rail guides the heavy object frame, and the counterweight guide rail guides the counterweight frame.
[0013] Preferably, the opposite surfaces of the weight guide rail are provided with weight abutment wheels, which are rotatably connected to the weight rack. Several weight clamping wheels are provided on both sides of the weight guide rail, which are rotatably connected to the weight rack.
[0014] By adopting the above technical solution, the heavy object rack and the heavy object guide rail are slidably connected through the heavy object abutment wheel and the heavy object clamping wheel. The heavy object abutment wheel and the heavy object clamping wheel limit the heavy object rack on the one hand, and reduce the friction between the heavy object guide rail and the heavy object rack on the other hand.
[0015] Preferably, counterweight abutment wheels are rolled on opposite surfaces of the counterweight guide rail, and the counterweight abutment wheels are rotatably connected to the counterweight frame. Several counterweight clamping wheels are rolled on both sides of the counterweight guide rail, and the counterweight clamping wheels are rotatably connected to the counterweight frame.
[0016] By adopting the above technical solution, the counterweight frame and the counterweight guide rail are slidably connected through the counterweight abutting wheel and the counterweight clamping wheel. The counterweight abutting wheel and the counterweight clamping wheel limit the counterweight frame on the one hand, and reduce the friction between the counterweight guide rail and the counterweight frame on the other hand.
[0017] The traction belt testing method provided in this application adopts the following technical solution: A method for testing traction belts includes the following steps: Step S1: Assemble the traction belt to be tested, the weight body, and the counterweight body; Step S2: If the friction coefficient of the traction belt under different wrap angles is tested, proceed to step S3; if the friction coefficient of the traction belt under different wrap angles is not tested, proceed to step S4. Step S3: Test the coefficient of friction of the traction belt under different wrap angles; Step S4: Calculate the traction belt life using the traction belt life formula; drive the traction wheel shaft to rotate back and forth, so that the traction belt drives the counterweight body to reciprocate, and measure the traction belt life.
[0018] Preferably, the traction belt to be tested is wound around the traction wheel axle, the load wheel axle, and the counterweight wheel axle; one end of the traction belt is connected to the load frame and the other end of the traction belt is connected to the counterweight frame; the load body is installed on the load frame and the counterweight body is installed on the counterweight frame.
[0019] Preferably, step S3 includes the following steps: Step S31: Calculate the large wrap angle between the traction belt and the traction sheave axle. static friction coefficient under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave shaft increases, and the tension count value at the moment when the traction sheave shaft and traction belt slip off is obtained. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the large wrap angle between the traction belt and the traction sheave shaft. coefficient of kinetic friction under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. The counterweight body is not connected to the base by a tension gauge. The rotation of the traction wheel shaft drives the weight body and its weight. The counterweight body moves, gradually increasing the mass of the weight body, and the weight of the weight body at the moment when the traction sheave and traction belt slip. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. static friction coefficient under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave shaft increases, and the tension count value at the moment when the traction sheave shaft and traction belt slip off is obtained. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. coefficient of kinetic friction under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. The counterweight body is not connected to the base by a tension gauge. The rotation of the traction wheel shaft drives the weight body and its weight. The counterweight body moves, gradually increasing the mass of the weight body, and the weight of the weight body at the moment when the traction sheave and traction belt slip. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Step S32: Calculate the large wrap angle between the traction belt and the traction sheave axle. Equivalent friction coefficient under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave axle increases, and the tension count value at which the traction sheave axle and traction belt experience continuous and stable slippage is obtained. ;calculate ,in, For the traction sheave shaft groove half angle, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. Equivalent friction coefficient under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave axle increases, and the tension count value at which the traction sheave axle and traction belt experience continuous and stable slippage is obtained. ;calculate ,in, For the traction sheave shaft groove half angle, and The maximum of the two is , and The minimum value of the two is .
[0020] Preferably, the formula for the traction belt life in step S4 is: ,in, For the lifespan of the traction belt; The fatigue constant of the traction belt material; This represents the actual working load of the traction belt; This is the rated ultimate load of the traction belt; The traction belt load index; This represents the average number of times the traction belt is started per year. The slope of the fatigue curve for the traction belt.
[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a base, stand, platform, weight rack, counterweight rack, weight body, counterweight body, tension gauge, traction wheel axle, weight wheel axle, counterweight wheel axle and pressure roller, the pressure roller is used to abut against the traction belt, adapting to traction belt test scenarios with different requirements, reducing the need to build the same test model for simulating elevator traction machines, simplifying the construction steps of the test device, and reducing the cost of traction belt testing; 2. During the testing of the traction belt, adjust the weight of the main body of the load, the weight of the counterweight, the wrap angle between the traction belt and the traction wheel axle, and the tension gauge according to the requirements of the test scenario to improve the applicability of the testing device to the test scenario. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a traction belt testing device in an embodiment of this application.
[0023] Figure 2 yes Figure 1 Enlarged view of part A in the middle.
[0024] Figure 3This is a schematic diagram illustrating the positional relationship between the main body of the heavy object and the counterweight body in the embodiments of this application.
[0025] Figure 4 yes Figure 3 Enlarged view of section B.
[0026] Figure 5 This is a schematic diagram illustrating the positional relationship between the pressure roller and the traction belt in an embodiment of this application.
[0027] Figure 6 This is a schematic diagram illustrating the positional relationship between the weight wheel axle and the counterweight wheel axle in an embodiment of this application.
[0028] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Base; 12. Platform; 2. Weight rack; 21. Weight body; 22. Weight guide rail; 221. Weight abutting wheel; 222. Weight clamping wheel; 3. Counterweight frame; 31. Counterweight body; 32. Counterweight guide rail; 321. Counterweight abutting wheel; 322. Counterweight clamping wheel; 4. Force gauge; 5. Traction wheel axle; 51. Drive motor; 6. Weight wheel axle; 7. Counterweight wheel axle; 8. Pressure roller; 9. Traction belt. Detailed Implementation
[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0030] This application discloses a traction belt testing device. (Refer to...) Figures 1 to 6The device includes a base 11, on which a set of frames 1 are mounted. A platform 12 is mounted on the top of the frames 1. The base 11, frames 1, and platform 12 together form the support structure for the traction belt 9 testing device. Weight guide rails 22 and counterweight guide rails 32 are mounted on opposite surfaces of the frames 1. The weight guide rails 22 and counterweight guide rails 32 are parallel and opposite to each other. A weight frame 2 is slidably mounted between the weight guide rails 22, guiding the weight frame 2. A counterweight frame 3 is slidably mounted between the counterweight guide rails 32, guiding the counterweight frame 3. A weight body 21 is detachably mounted on the weight frame 2, which is used for detachable connection to one end of the traction belt 9. A counterweight body 31 is detachably mounted on the counterweight frame 3, which is used for detachable connection to the other end of the traction belt 9. A tension gauge 4 is connected between the counterweight body 31 and the base 11. A traction sheave shaft 5 is rotatably mounted between the frames 1, with a weight guide rail 22 and a counterweight guide rail 32 symmetrically arranged on both sides of the traction sheave shaft 5. A drive motor 51 is mounted on the base 11, and the output shaft of the drive motor 51 is connected to the traction sheave shaft 5, providing a continuous, stable, and adjustable driving force to the traction sheave shaft 5. A weight sheave shaft 6 and a counterweight sheave shaft 7 are rotatably mounted on the platform 12, symmetrically arranged above the traction sheave shaft 5, with the axes of the weight sheave shaft 6, the counterweight sheave shaft 7, and the traction sheave shaft 5 being parallel to each other. The traction sheave shaft 5, weight sheave shaft 6, and counterweight sheave shaft 7 are all used for winding the traction belt 9, making the tension distribution on both sides of the traction belt 9 more uniform. A pressure roller 8 is detachably mounted between the frames 1, and the pressure roller 8 is used to abut against the traction belt 9. The traction belt 9 to be tested is sequentially wound around the traction wheel axle 5, the load wheel axle 6, and the counterweight wheel axle 7 to form a stable transmission path. Both ends of the traction belt 9 are detachably connected to the load frame 2 and the counterweight frame 3, respectively. By assembling the load body 21 on the load frame 2 and the counterweight body 31 on the counterweight frame 3, the load state of the traction belt 9 in actual operation is simulated. The detachable pressure rollers 8 between the test benches 1 can selectively abut against the traction belt 9, adjusting the contact wrap angle between the traction belt 9 and the traction wheel axle 5, adapting to different scenario requirements for the traction belt 9 test, reducing the need to build the same test model for simulating elevator traction machines, simplifying the construction steps of the test device, and reducing the testing cost of the traction belt 9.
[0031] Reference Figures 1 to 6 The heavy-load guide rail 22 has rolling heavy-load abutment wheels 221 on its opposite surfaces, which are rotatably connected to the heavy-load rack 2. Several heavy-load clamping wheels 222 are rolling on both sides of the heavy-load guide rail 22, and are rotatably connected to the heavy-load rack 2. The heavy-load rack 2 and the heavy-load guide rail 22 are slidably connected through the heavy-load abutment wheels 221 and the heavy-load clamping wheels 222. These wheels limit the movement of the heavy-load rack 2 and reduce friction between the heavy-load guide rail 22 and the heavy-load rack 2.
[0032] Reference Figures 1 to 6 The counterweight guide rail 32 has counterweight abutment wheels 321 rollingly arranged on its opposite surfaces. The counterweight abutment wheels 321 are rotatably connected to the counterweight frame 3. Several counterweight clamping wheels 322 are rollingly arranged on both sides of the counterweight guide rail 32. The counterweight clamping wheels 322 are rotatably connected to the counterweight frame 3. The counterweight frame 3 and the counterweight guide rail 32 are slidably connected through the counterweight abutment wheels 321 and the counterweight clamping wheels 322. The counterweight abutment wheels 321 and the counterweight clamping wheels 322 limit the counterweight frame 3 on the one hand, and reduce the friction between the counterweight guide rail 32 and the counterweight frame 3 on the other hand.
[0033] This application discloses a traction belt testing method, referring to... Figures 1 to 6 This includes the following steps.
[0034] Step S1: Assemble the traction belt to be tested, the weight body, and the counterweight body. Wrap the traction belt to be tested around the traction wheel axle, the weight wheel axle, and the counterweight wheel axle; connect one end of the traction belt to the weight frame and the other end of the traction belt to the counterweight frame; install the weight body on the weight frame and the counterweight body on the counterweight frame.
[0035] Step S2: If the friction coefficient of the traction belt under different wrap angles is tested, proceed to step S3; if the friction coefficient of the traction belt under different wrap angles is not tested, proceed to step S4.
[0036] Step S3: Test the coefficient of friction of the traction belt under different wrap angles, including the following steps.
[0037] Step S31: Calculate the large wrap angle between the traction belt and the traction sheave axle. static friction coefficient under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave shaft increases, and the tension count value at the moment when the traction sheave shaft and traction belt slip off is obtained. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the large wrap angle between the traction belt and the traction sheave shaft. coefficient of kinetic friction under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. The counterweight body is not connected to the base by a tension gauge. The rotation of the traction wheel shaft drives the weight body and its weight. The counterweight body moves, gradually increasing the mass of the weight body, and the weight of the weight body at the moment when the traction sheave and traction belt slip. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. static friction coefficient under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave shaft increases, and the tension count value at the moment when the traction sheave shaft and traction belt slip off is obtained. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. coefficient of kinetic friction under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. The counterweight body is not connected to the base by a tension gauge. The rotation of the traction wheel shaft drives the weight body and its weight. The counterweight body moves, gradually increasing the mass of the weight body, and the weight of the weight body at the moment when the traction sheave and traction belt slip. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Step S32: Calculate the large wrap angle between the traction belt and the traction sheave axle. Equivalent friction coefficient under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave axle increases, and the tension count value at which the traction sheave axle and traction belt experience continuous and stable slippage is obtained. ;calculate ,in, For the traction sheave shaft groove half angle, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. Equivalent friction coefficient under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave axle increases, and the tension count value at which the traction sheave axle and traction belt experience continuous and stable slippage is obtained. ;calculate ,in, For the traction sheave shaft groove half angle, and The maximum of the two is , and The minimum value of the two is .
[0038] Step S4: Drive the traction sheave shaft to rotate reciprocally, causing the traction belt to drive the counterweight body in reciprocating motion, and measure the traction belt life. Calculate the traction belt life using the traction belt life formula, which is: .in, For the lifespan of the traction belt; The fatigue constant of the traction belt material is obtained through material fatigue testing. The actual working load of the traction belt is obtained through load spectrum analysis or actual measurement. The rated ultimate load of the traction belt is obtained from the actual specification of the manufacturer. The traction belt load index is obtained through regression analysis of fatigue test data. This represents the average number of times the traction belt is started per year. The slope of the fatigue curve of the traction belt is determined by fitting fatigue test data.
[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A traction belt testing device, comprising a base, wherein a set of stands are fixedly mounted on the base, and a platform is commonly mounted on the top of the stands, characterized in that: A weight rack and a counterweight rack are slidably arranged between the platforms. The weight rack is detachably connected to one end of the traction belt, and the counterweight rack is detachably connected to the other end of the traction belt. A weight body is detachably mounted on the weight rack, and a counterweight body is detachably mounted on the counterweight rack. A tension gauge is connected between the counterweight body and the base. A traction wheel axle is rotatably arranged between the platforms, and the traction wheel axle is located between the weight rack and the counterweight rack. A weight wheel axle and a counterweight wheel axle are rotatably arranged on the platform. The traction wheel axle, weight wheel axle, and counterweight wheel axle are all for the traction belt to wind around. A pressure roller is detachably arranged between the platforms, and the pressure roller is used to abut against the traction belt.
2. The traction belt testing device according to claim 1, characterized in that: The load wheel axle and the counterweight wheel axle are symmetrically arranged above the traction wheel axle, and the axes of the load wheel axle, the counterweight wheel axle, and the traction wheel axle are parallel to each other.
3. The traction belt testing device according to claim 1, characterized in that: A drive motor is fixedly mounted on the base, and the output shaft of the drive motor is used to connect to the traction wheel shaft.
4. The traction belt testing device according to claim 1, characterized in that: The platform is fixedly equipped with a weight guide rail and a counterweight guide rail on opposite surfaces. The weight guide rail and the counterweight guide rail are symmetrically arranged on both sides of the traction wheel shaft. The weight guide rails are arranged opposite each other, and the counterweight guide rails are arranged opposite each other. The weight frame is slidably arranged between the weight guide rails, and the counterweight frame is slidably arranged between the counterweight guide rails.
5. The traction belt testing device according to claim 4, characterized in that: The opposing surfaces of the heavy object guide rails are each provided with a rolling heavy object abutment wheel, which is rotatably connected to the heavy object frame. Several heavy object clamping wheels are also provided on both sides of the heavy object guide rails, which are rotatably connected to the heavy object frame.
6. The traction belt testing device according to claim 4, characterized in that: The counterweight guide rails are provided with counterweight abutting wheels on opposite surfaces, and the counterweight abutting wheels are rotatably connected to the counterweight frame. Several counterweight clamping wheels are provided on both sides of the counterweight guide rails, and the counterweight clamping wheels are rotatably connected to the counterweight frame.
7. A method for testing a traction belt using the testing apparatus according to any one of claims 1 to 6, characterized in that: Includes the following steps: Step S1: Assemble the traction belt to be tested, the weight body, and the counterweight body; Step S2: If the friction coefficient of the traction belt under different wrap angles is tested, proceed to step S3; if the friction coefficient of the traction belt under different wrap angles is not tested, proceed to step S4. Step S3: Test the coefficient of friction of the traction belt under different wrap angles; Step S4: Calculate the traction belt life using the traction belt life formula; drive the traction wheel shaft to rotate back and forth, so that the traction belt drives the counterweight body to reciprocate, and measure the traction belt life.
8. The traction belt testing method according to claim 7, characterized in that: The traction belt to be tested is wound around the traction wheel axle, the load wheel axle, and the counterweight wheel axle; one end of the traction belt is connected to the load frame and the other end of the traction belt is connected to the counterweight frame; the load body is installed on the load frame and the counterweight body is installed on the counterweight frame.
9. The traction belt testing method according to claim 7, characterized in that: Step S3 includes the following steps: Step S31: Calculate the large wrap angle between the traction belt and the traction sheave axle. static friction coefficient under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave shaft increases, and the tension count value at the moment when the traction sheave shaft and traction belt slip off is obtained. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the large wrap angle between the traction belt and the traction sheave shaft. coefficient of kinetic friction under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. The counterweight body is not connected to the base by a tension gauge. The rotation of the traction wheel shaft drives the weight body and its weight. The counterweight body moves, gradually increasing the mass of the weight body, and the weight of the weight body at the moment when the traction sheave and traction belt slip. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. static friction coefficient under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave shaft increases, and the tension count value at the moment when the traction sheave shaft and traction belt slip off is obtained. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. coefficient of kinetic friction under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. The counterweight body is not connected to the base by a tension gauge. The rotation of the traction wheel shaft drives the weight body and its weight. The counterweight body moves, gradually increasing the mass of the weight body, and the weight of the weight body at the moment when the traction sheave and traction belt slip. ;calculate ,in, and The maximum of the two is , and The minimum value of the two is ; Step S32: Calculate the large wrap angle between the traction belt and the traction sheave axle. Equivalent friction coefficient under the condition The pressure roller is assembled so that it presses against the traction belt, creating a wrap angle between the traction belt and the traction wheel shaft. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave axle increases, and the tension count value at which the traction sheave axle and traction belt experience continuous and stable slippage is obtained. ;calculate ,in, For the traction sheave shaft groove half angle, and The maximum of the two is , and The minimum value of the two is ; Calculate the small wrap angle between the traction belt and the traction sheave axle. Equivalent friction coefficient under the condition Without the pressure rollers installed, the wrap angle between the traction belt and the traction sheave shaft is [missing information]. A tension gauge is connected between the counterweight body and the base. The rotation of the traction wheel shaft drives the counterweight body to rise, and the weight is... As the heavy object descends, the driving force on the traction sheave axle increases, and the tension count value at which the traction sheave axle and traction belt experience continuous and stable slippage is obtained. ;calculate ,in, For the traction sheave shaft groove half angle, and The maximum of the two is , and The minimum value of the two is .
10. A traction belt testing method according to claim 7, characterized in that: The formula for the traction belt life in step S4 is: ,in, For the lifespan of the traction belt; The fatigue constant of the traction belt material; This represents the actual working load of the traction belt; This is the rated ultimate load of the traction belt; The traction belt load index; This represents the average number of times the traction belt is started per year. The slope of the fatigue curve for the traction belt.