阅读说明：本技术 一种移动式破碎机工作产能计量方法及系统 (Method and system for measuring working capacity of movable crusher ) 是由 王帅 李祥科 王元鹏 余孟狄 于 2021-09-15 设计创作，主要内容包括：本发明公开了一种移动式破碎机工作产能计量方法及系统,通过获取皮带输送机的功率；测量出破碎机成品电机的电机空转电流、皮带倾斜角度、成品皮带空转状态电机电流和成品皮带电机工作电流；根据获取的皮带输送机的功率,以及测量出的电机空转电流、皮带倾斜角度、成品皮带空转状态电机电流和成品皮带电机工作电流,计算出皮带空转时所需功率、皮带带载时消耗的功率、皮带输送垂直高度、皮带输送水平距离、电机阻力系数、皮带输送量、破碎机实时产能和破碎机在固定时间内的总产量。本发明测量手段简单可靠,不受破碎机姿态及皮带倾斜角度等限制,适用于各种工况场地；集成度高,只需要定好与控制系统的通讯协议,即可做为通用性元件使用。(The invention discloses a method and a system for measuring the working capacity of a movable crusher, which are characterized in that the power of a belt conveyor is obtained; measuring the motor idling current, the belt inclination angle, the motor current in the idling state of the finished belt and the working current of the finished belt motor of the crusher; and calculating the required power during the idling of the belt, the consumed power during the loading of the belt, the vertical height of the belt conveying, the horizontal distance of the belt conveying, the resistance coefficient of the motor, the belt conveying capacity, the real-time capacity of the crusher and the total output of the crusher in a fixed time according to the acquired power of the belt conveyor, the measured idle current of the motor, the belt inclination angle, the motor current in the idle state of the finished belt and the working current of the finished belt motor. The invention has simple and reliable measuring means, is not limited by the posture of the crusher, the inclination angle of the belt and the like, and is suitable for various working condition sites; the integration level is high, and the universal element can be used as a universal element only by setting a communication protocol with a control system.)

1. A working capacity metering method of a mobile crusher is characterized by comprising the following steps:

obtaining the power of a belt conveyor, wherein the power of the belt conveyor comprises the power P required by the belt when the belt idles₁The power P required by the horizontal transmission load of the belt₂And the power P required by the belt for lifting the load height₃；

Measuring motor idling current I of finished product motor of crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃；

According to the obtained power of the belt conveyor and the measured idle current I of the motor of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K;

according to the calculated power P required by the idle belt₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K are calculated, and the belt conveying amount Qt is calculated₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time.

2. The method according to claim 1, wherein the power P required for idling belt is P₁Comprises the following steps:

P₁＝(C×f×L×3.6Gm×V)/367

wherein, P₁The power required by the belt idling is C, the damping coefficient of a conveying belt and a bearing is F, the damping coefficient of a carrier roller is L, the effective horizontal conveying distance of the belt conveyor is L, the mass of the conveying belt, the carrier roller and a steering roller is Gm, and the belt speed is V;

the belt horizontally transmits the power P required by the load₂Comprises the following steps:

P₂＝(C×f×L×Qt₁)/367

wherein, P₂The power required by the belt to horizontally convey the load is C the damping coefficient of the conveyer belt and the bearing, f the damping coefficient of the carrier roller, L the effective horizontal conveying distance of the belt conveyor and Qt₁The belt conveying amount;

the power P required by the belt for lifting the load height₃Comprises the following steps:

P₃＝Qt₁×H/367

wherein, P₃Power required for lifting the height of the load, Qt₁The belt conveying amount is shown as H, and the vertical height of the belt conveying is shown as H.

3. The method according to claim 2, wherein the power P required for idling belt is P₁Calculated by the following formula:

wherein, P₁U is the power supply voltage, cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in an idle state of the finished belt;

power P consumed when the belt is loaded₂+P₃Calculated by the following formula:

wherein, P₂For horizontal transport of the power, P, required by the belt₃The power required for elevating the height of the load for the belt, U is the supply voltage, cos phi is the motor power factor, I₂Motor current in the idle state of the finished belt, I₃Working current of a finished belt motor is obtained;

the belt conveying vertical height H is calculated by the following formula:

H＝L₀×sinθ

wherein H is the vertical height of belt conveying, L₀Is the length of the belt, theta is the inclination angle of the belt;

the belt conveying horizontal distance L is calculated by the following formula:

L＝L₀×cosθ

wherein L is the horizontal distance of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

The motor resistance coefficient K is calculated by the following formula:

K＝C×f＝P₁×367/L×3.6Gm×V

wherein K is the resistance coefficient of the motor, C is the damping coefficient of the conveyer belt and the bearing, f is the damping coefficient of the carrier roller, and P is the damping coefficient of the carrier roller₁The belt idling power is needed, L is the horizontal distance of belt conveying, Gm is the mass of the conveying belt, the carrier roller and the steering roller, and V is the belt speed.

4. The mobile crusher working capacity metering method of claim 3, characterized in that the belt conveying amount Qt₁Calculated by the following formula:

Qt₁＝(P₂+P₃)×367/(K×L+H)

wherein, Qt₁For belt conveying capacity, P₂For horizontal transport of the power, P, required by the belt₃For the belt to promote the high required power of load, K is the motor resistance coefficient, L is belt transport horizontal distance, H is belt transport vertical height.

5. The mobile crusher working capacity meter of claim 4Method, characterized in that the crusher is capable of producing Qt real time₂Calculated by the following formula:

Qt₂＝635×U×cosφ×(I₃-I₂)/[635×U×cosφ×(I₂-I₁)/3.6Gm×V+L₀×sinθ]

wherein, Qt₂For real-time capacity of the crusher cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in the idle state of the finished belt, I₃The working current of the belt motor is finished, Gm is the quality of the conveying belt, the carrier roller and the steering roller, V is the belt speed, and L is₀Is the length of the belt, theta is the inclination angle of the belt;

the total yield m of the crusher in a fixed time is calculated by the following formula:

where m is the total yield of the crusher in a fixed time, Qt₂The real-time capacity of the crusher is realized.

6. A mobile crusher work capacity metering system, comprising:

an acquisition module (10) for acquiring the power of a belt conveyor, including the power P required when the belt is idle₁The power P required by the horizontal transmission load of the belt₂And the power P required by the belt for lifting the load height₃；

A measuring module (20) for measuring the motor idle current I of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃；

A first calculation module (30) for calculating the motor idle current I of the finished crusher motor according to the acquired power of the belt conveyor and the measured motor idle current I₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K;

a second calculation module (40) for calculating the power P required when the belt is idle₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K are calculated, and the belt conveying amount Qt is calculated₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time.

7. The mobile crusher working capacity metering system of claim 6, wherein the power P required for the belt to idle is P₁Comprises the following steps:

P₁＝(C×f×L×3.6Gm×V)/367

wherein, P₁The power required by the belt idling is C, the damping coefficient of a conveying belt and a bearing is F, the damping coefficient of a carrier roller is L, the effective horizontal conveying distance of the belt conveyor is L, the mass of the conveying belt, the carrier roller and a steering roller is Gm, and the belt speed is V;

the belt horizontally transmits the power P required by the load₂Comprises the following steps:

P₂＝(C×f×L×Qt₁)/367

wherein, P₂The power required by the belt to horizontally convey the load is C the damping coefficient of the conveyer belt and the bearing, f the damping coefficient of the carrier roller, L the effective horizontal conveying distance of the belt conveyor and Qt₁The belt conveying amount;

the power P required by the belt for lifting the load height₃Comprises the following steps:

P₃＝Qt₁×H/367

wherein, P₃Power required for lifting the height of the load, Qt₁The belt conveying amount is shown as H, and the vertical height of the belt conveying is shown as H.

8. As claimed in claim 7The system for measuring the working capacity of the mobile crusher is characterized in that the power P required by the idle belt is P₁Calculated by the following formula:

wherein, P₁U is the power supply voltage, cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in an idle state of the finished belt;

power P consumed when the belt is loaded₂+P₃Calculated by the following formula:

wherein, P₂For horizontal transport of the power, P, required by the belt₃The power required for elevating the height of the load for the belt, U is the supply voltage, cos phi is the motor power factor, I₂Motor current in the idle state of the finished belt, I₃Working current of a finished belt motor is obtained;

the belt conveying vertical height H is calculated by the following formula:

H＝L₀×sinθ

wherein H is the vertical height of belt conveying, L₀Is the length of the belt, theta is the inclination angle of the belt;

the belt conveying horizontal distance L is calculated by the following formula:

L＝L₀×cosθ

wherein L is the horizontal distance of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

The motor resistance coefficient K is calculated by the following formula:

K＝C×f＝P₁×367/L×3.6Gm×V

wherein K is the resistance coefficient of the motor, and C is the outputDamping coefficient of belt and bearing, f is damping coefficient of carrier roller, P₁The belt idling power is needed, L is the horizontal distance of belt conveying, Gm is the mass of the conveying belt, the carrier roller and the steering roller, and V is the belt speed.

9. The mobile crusher work capacity metering system of claim 8, wherein the belt delivery capacity Qt₁Calculated by the following formula:

Qt₁＝(P₂+P₃)×367/(K×L+H)

wherein, Qt₁For belt conveying capacity, P₂For horizontal transport of the power, P, required by the belt₃For the belt to promote the high required power of load, K is the motor resistance coefficient, L is belt transport horizontal distance, H is belt transport vertical height.

10. The mobile crusher working capacity metering system of claim 9, wherein the crusher real-time capacity Qt₂Calculated by the following formula:

Qt₂＝635×U×cosφ×(I₃-I₂)/[635×U×cosφ×(I₂-I₁)/3.6Gm×V+L₀×sinθ]

wherein, Qt₂For real-time capacity of the crusher cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in the idle state of the finished belt, I₃The working current of the belt motor is finished, Gm is the quality of the conveying belt, the carrier roller and the steering roller, V is the belt speed, and L is₀Is the length of the belt, theta is the inclination angle of the belt;

the total yield m of the crusher in a fixed time is calculated by the following formula:

where m is the total yield of the crusher in a fixed time, Qt₂To breakThe real-time capacity of the crusher.

Technical Field

The invention relates to the field of control of engineering mechanical equipment, and particularly discloses a method and a system for measuring the working capacity of a movable crusher.

Background

Because the current environmental protection policy limits river sand excavation, the mode of crushing into sand by stone is more and more widely adopted, and the market development of the mobile crusher is faster and faster. But the technology of working output calculation (sand tonnage) of the crusher per se is still in a blank state at present.

The general workflow of mobile crushing is: the stone blocks are sent to a feeding belt through the excavator → conveyed to a crushing main machine to be crushed into semi-finished products → an iron remover for removing iron and impurities, a blower for removing impurities → a filter screen for filtering → the finished product sand is discharged through a finished product belt, and unqualified sand returns to the main machine through a return belt to be crushed again.

Because the product is mobile, the problems of trafficability and balance need to be considered, and the mechanism of the conveyor belt of the crusher part is foldable or detachable. Thus, conventional weight measuring methods (e.g., load cell/belt scale) cannot be used on products due to installation problems. And the novel technology (such as radar, image recognition and other auxiliary metering) cannot be normally used even in the working environment with serious dust of the crusher. Therefore, the current work output calculation of the crusher cannot be solved by itself, and only can be metered and fed back after the finished product is transported by a downstream truck. This is both less active and less real-time, and the owner of the equipment cannot actively control the product yield and productivity.

Therefore, the above-mentioned defects existing in the self-weighing of the existing mobile crusher are a technical problem to be solved urgently.

Disclosure of Invention

The invention provides a method and a system for measuring the working capacity of a mobile crusher, and aims to solve the technical problem of the defects existing in the self-weighing process of the existing mobile crusher.

One aspect of the invention relates to a method for measuring the working capacity of a mobile crusher, which comprises the following steps:

obtaining the power of the belt conveyor, wherein the power of the belt conveyor comprises the power P required by the belt when the belt idles₁The power P required by the horizontal transmission load of the belt₂And belt lifting load heightRequired power P₃；

Measuring motor idling current I of finished product motor of crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃；

According to the obtained power of the belt conveyor and the measured idle current I of the motor of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K;

according to the calculated power P required by the idle belt₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K are calculated, and the belt conveying amount Qt is calculated₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time.

Further, the power P required when the belt is idle₁Comprises the following steps:

P₁＝(C×f×L×3.6Gm×V)/367

wherein, P₁The power required by the belt idling is C, the damping coefficient of a conveying belt and a bearing is F, the damping coefficient of a carrier roller is L, the effective horizontal conveying distance of the belt conveyor is L, the mass of the conveying belt, the carrier roller and a steering roller is Gm, and the belt speed is V;

power P required by belt horizontal conveying load₂Comprises the following steps:

P₂＝(C×f×L×Qt₁)/367

wherein, P₂The power required by the belt to horizontally convey the load is C the damping coefficient of the conveyer belt and the bearing, f the damping coefficient of the carrier roller, L the effective horizontal conveying distance of the belt conveyor and Qt₁The belt conveying amount;

power P required by belt to lift load height₃Comprises the following steps:

P₃＝Qt₁×H/367

wherein, P₃Power required for lifting the height of the load, Qt₁The belt conveying amount is shown as H, and the vertical height of the belt conveying is shown as H.

Further, the power P required when the belt is idle₁Calculated by the following formula:

wherein, P₁U is the power supply voltage, cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in an idle state of the finished belt;

power P consumed when belt is loaded₂+P₃Calculated by the following formula:

wherein, P₂For horizontal transport of the power, P, required by the belt₃The power required for elevating the height of the load for the belt, U is the supply voltage, cos phi is the motor power factor, I₂Motor current in the idle state of the finished belt, I₃Working current of a finished belt motor is obtained;

the belt transport vertical height H is calculated by the following formula:

H＝L₀×sinθ

wherein H is the vertical height of belt conveying, L₀Is the length of the belt, theta is the inclination angle of the belt;

the belt conveying horizontal distance L is calculated by the following formula:

L＝L₀×cosθ

wherein L is the horizontal distance of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

The resistance coefficient K of the motor is calculated by the following formula:

K＝C×f＝P₁×367/L×3.6Gm×V

wherein K is the resistance coefficient of the motor, C is the damping coefficient of the conveyer belt and the bearing, f is the damping coefficient of the carrier roller, and P is the damping coefficient of the carrier roller₁The belt idling power is needed, L is the horizontal distance of belt conveying, Gm is the mass of the conveying belt, the carrier roller and the steering roller, and V is the belt speed.

Further, the belt conveying amount Qt₁Calculated by the following formula:

Qt₁＝(P₂+P₃)×367/(K×L+H)

wherein, Qt₁For belt conveying capacity, P₂For horizontal transport of the power, P, required by the belt₃For the belt to promote the high required power of load, K is the motor resistance coefficient, L is belt transport horizontal distance, H is belt transport vertical height.

Further, the real-time capacity Qt of the crusher₂Calculated by the following formula:

Qt₂＝635×U×cosφ×(I₃-I₂)/[635×U×cosφ×(I₂-I₁)/3.6Gm×V+L₀×sinθ]

wherein, Qt₂For real-time capacity of the crusher cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in the idle state of the finished belt, I₃The working current of the belt motor is finished, Gm is the quality of the conveying belt, the carrier roller and the steering roller, V is the belt speed, and L is₀Is the length of the belt, theta is the inclination angle of the belt;

the total yield m of the crusher in a fixed time is calculated by the following formula:

where m is the total yield of the crusher in a fixed time, Qt₂The real-time capacity of the crusher is realized.

Another aspect of the invention relates to a mobile crusher work capacity metering system comprising:

an acquisition module for acquiring the power of the belt conveyor, wherein the power of the belt conveyor comprises the power P required by the belt when the belt idles₁The power P required by the horizontal transmission load of the belt₂And the power P required by the belt for lifting the load height₃；

A measuring module for measuring the motor idle current I of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃；

A first calculation module for calculating the motor idle current I of the finished product motor of the crusher according to the acquired power of the belt conveyor and the measured motor idle current I₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K;

a second calculation module for calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K are calculated, and the belt conveying amount Qt is calculated₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time.

Further, the power P required when the belt is idle₁Comprises the following steps:

P₁＝(C×f×L×3.6Gm×V)/367

wherein, P₁The power required by the belt idling is C, the damping coefficient of a conveying belt and a bearing is F, the damping coefficient of a carrier roller is L, the effective horizontal conveying distance of the belt conveyor is L, the mass of the conveying belt, the carrier roller and a steering roller is Gm, and the belt speed is V;

power P required by belt horizontal conveying load₂Comprises the following steps:

P₂＝(C×f×L×Qt₁)/367

wherein, P₂The power required by the belt to horizontally convey the load is C the damping coefficient of the conveyer belt and the bearing, f the damping coefficient of the carrier roller, L the effective horizontal conveying distance of the belt conveyor and Qt₁The belt conveying amount;

power P required by belt to lift load height₃Comprises the following steps:

P₃＝Qt₁×H/367

wherein, P₃Power required for lifting the height of the load, Qt₁The belt conveying amount is shown as H, and the vertical height of the belt conveying is shown as H.

Further, the power P required when the belt is idle₁Calculated by the following formula:

wherein, P₁U is the power supply voltage, cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in an idle state of the finished belt;

power P consumed when belt is loaded₂+P₃Calculated by the following formula:

wherein, P₂For horizontal transport of the power, P, required by the belt₃The power required for elevating the height of the load for the belt, U is the supply voltage, cos phi is the motor power factor, I₂Motor current in the idle state of the finished belt, I₃Working current of a finished belt motor is obtained;

the belt transport vertical height H is calculated by the following formula:

H＝L₀×sinθ

wherein H is the vertical height of belt conveying, L₀Is the length of the belt, theta is the inclination angle of the belt;

the belt conveying horizontal distance L is calculated by the following formula:

L＝L₀×cosθ

wherein L is the horizontal distance of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

The resistance coefficient K of the motor is calculated by the following formula:

K＝C×f＝P₁×367/L×3.6Gm×V

wherein K is the resistance coefficient of the motor, C is the damping coefficient of the conveyer belt and the bearing, f is the damping coefficient of the carrier roller, and P is the damping coefficient of the carrier roller₁The belt idling power is needed, L is the horizontal distance of belt conveying, Gm is the mass of the conveying belt, the carrier roller and the steering roller, and V is the belt speed.

Further, the belt conveying amount Qt₁Calculated by the following formula:

Qt₁＝(P₂+P₃)×367/(K×L+H)

wherein, Qt₁For belt conveying capacity, P₂For horizontal transport of the power, P, required by the belt₃For the belt to promote the high required power of load, K is the motor resistance coefficient, L is belt transport horizontal distance, H is belt transport vertical height.

Further, the real-time capacity Qt of the crusher₂Calculated by the following formula:

Qt₂＝635×U×cosφ×(I₃-I₂)/[635×U×cosφ×(I₂-I₁)/3.6Gm×V+L₀×sinθ]

wherein, Qt₂For real-time capacity of the crusher cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in the idle state of the finished belt, I₃The working current of the belt motor is finished, Gm is the quality of the conveying belt, the carrier roller and the steering roller, V is the belt speed, and L is₀Is the length of the belt, theta is the inclination angle of the belt;

the total yield m of the crusher in a fixed time is calculated by the following formula:

where m is the total yield of the crusher in a fixed time, Qt₂The real-time capacity of the crusher is realized.

The beneficial effects obtained by the invention are as follows:

the invention provides a method and a system for measuring the working capacity of a mobile crusher, which are characterized in that the power of a belt conveyor is obtained, and the power of the belt conveyor comprises the power P required by the idling of a belt₁The power P required by the horizontal transmission load of the belt₂And the power P required by the belt for lifting the load height₃(ii) a Measuring motor idling current I of finished product motor of crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃(ii) a According to the obtained power of the belt conveyor and the measured idle current I of the motor of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃Belt conveying vertical height H, belt conveying horizontal distance L, motor resistance coefficient K and belt conveying amount Qt₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time. According to the method and the system for measuring the working capacity of the mobile crusher, the effective output power of the belt motor of the crusher is calculated by measuring the no-load and load current of the motor, the weight of sand transported by the belt is reversely calculated by assisting the parameters such as the inclination angle of the belt, the length of the belt, the self weight of the belt and the like, and the mass of the sand transported by a finished product belt of the crusher can be indirectly measured without directly weighing the difficult scheme; the measuring means is simple and reliable, is not limited by the posture of the crusher, the inclination angle of the belt and the like, and is suitable for various working condition sites; the integration level is high, and the universal element can be used as a universal element only by setting a communication protocol with a control system.

Drawings

FIG. 1 is a schematic flow chart illustrating a method for measuring working capacity of a mobile crusher according to an embodiment of the present invention;

fig. 2 is a functional block diagram of an embodiment of a working capacity metering system of a mobile crusher according to the present invention.

The reference numbers illustrate:

10. an acquisition module; 20. a measurement module; 30. a first calculation module; 40. and a second calculation module.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

As shown in fig. 1 and fig. 2, a first embodiment of the present invention provides a method for measuring working capacity of a mobile crusher, comprising the following steps:

step S100, obtaining the power of the belt conveyor, wherein the power of the belt conveyor comprises the power P required by the idling of a belt₁The power P required by the horizontal transmission load of the belt₂And the power P required by the belt for lifting the load height₃。

The power of the belt conveyor is composed of three parts, namely the power P required by the idle belt₁Power P required for horizontal belt conveying load₂And the power P required by the belt for lifting the load height₃。

The calculation formula of the total power of the belt conveyor is as follows:

P₀＝[C×f×L×(3.6Gm×V+Qt)+Qt×H]/367 (1)

in the formula (1), P₀The total power of the belt conveyor is C, the damping coefficient of a conveying belt and a bearing (belt inherent constant), f is the damping coefficient of a carrier roller (belt inherent constant), L is the effective horizontal conveying distance of the belt conveyor (belt inherent constant), GM is the mass of the conveying belt, the carrier roller and a steering roller (belt inherent constant), V is the belt speed (because of the constant frequency of a motor, the mass can also be roughly regarded as constant under the condition of no serious overload), Qt is the conveying capacity of the belt (unit ton/hour), and H is the vertical conveying height of the belt.

The power is split into the three parts, namely:

first, the power P required by the belt in idle₁Comprises the following steps:

P₁＝(C×f×L×3.6Gm×V)/367 (2)

in the formula (2), P₁The power required by the belt in idling is C, the damping coefficient of a conveying belt and a bearing is F, the damping coefficient of a carrier roller is L, the effective horizontal conveying distance of the belt conveyor is L, the mass of the conveying belt, the carrier roller and a steering roller is Gm, and the belt speed is V.

Secondly, the belt horizontally transmits the power P required by the load₂Comprises the following steps:

P₂＝(C×f×L×Qt₁)/367 (3)

in formula (3), P₂The power required by the belt to horizontally convey the load is C the damping coefficient of the conveyer belt and the bearing, f the damping coefficient of the carrier roller, L the effective horizontal conveying distance of the belt conveyor and Qt₁The belt conveying amount.

Thirdly, the power P required by the belt to lift the load height₃Comprises the following steps:

P₃＝Qt₁×H/367 (4)

in the formula (4), P₃Power required for lifting the height of the load, Qt₁The belt conveying amount is shown as H, and the vertical height of the belt conveying is shown as H.

Step S200, measuring the motor idling current I of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃。

When the belt motor of the crusher is not connected with the belt, the idle current of the motor is measured to be I through the current transducer₁(fixed value, each device only needs to measure once). When the finished product belt of the crusher is unfolded and then runs in a no-load mode, the inclination angle theta of the belt is measured through the inclination angle sensor, the current of the finished product belt which is unfolded in place but does not transmit load gravel is measured through the current transducer, and the current of the motor in the idle state of the finished product belt is I₂. When the crusher starts to work, the working current of the loaded finished belt motor is measured to be I in real time through the current transducer₃。

Step S300, according to the acquired power of the belt conveyor and the measured idle current I of the motor of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃The device comprises a belt conveying vertical height H, a belt conveying horizontal distance L and a motor resistance coefficient K.

According to a motor power calculation formula, the self no-load power consumption of the motor can be calculated:

in the formula (5), U is the power supply voltage, cos phi is the power factor of the motor, and the terms are known; i is₁Is the motor idling current of the finished product motor of the crusher.

Power P required when belt is idle₁Calculated by the following formula:

in the formula (6), P₁U is the power supply voltage, cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂The motor current is in the idle state of the finished belt.

Power P consumed when belt is loaded₂+P₃Calculated by the following formula:

in the formula (7), P₂For horizontal transport of the power, P, required by the belt₃The power required for elevating the height of the load for the belt, U is the supply voltage, cos phi is the motor power factor, I₂In an idle state of the beltMechanical current, I₃The finished product of the belt motor is the working current.

The belt transport vertical height H is calculated by the following formula:

H＝L₀×sinθ (8)

in the formula (8), H is the vertical height of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

The belt conveying horizontal distance L is calculated by the following formula:

L＝L₀×cosθ (9)

in the formula (9), L is the horizontal distance of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

Power P required when belt is idle₁Calculated by the following formula:

formula (10), P₁U is the power supply voltage, cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂The motor current is in the idle state of the finished belt.

Power P consumed when belt is loaded₂+P₃Calculated by the following formula:

in formula (11), P₂For horizontal transport of the power, P, required by the belt₃The power required for elevating the height of the load for the belt, U is the supply voltage, cos phi is the motor power factor, I₂Motor current in the idle state of the finished belt, I₃The finished product of the belt motor is the working current.

The belt transport vertical height H is calculated by the following formula:

H＝L₀×sinθ (12)

in the formula (12), H is the number of sheetsWith vertical height of transport, L₀Is the belt length, theta is the belt inclination angle.

The belt conveying horizontal distance L is calculated by the following formula:

L＝L₀×cosθ (13)

in the formula (13), L is the horizontal belt conveying distance, L₀Is the belt length, theta is the belt inclination angle.

Step S400, obtaining the required power P during the idle running of the belt according to the calculation₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K are calculated, and the belt conveying amount Qt is calculated₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time.

Belt conveying amount Qt₁Calculated by the following formula:

Qt₁＝(P₂+P₃)×367/(K×L+H) (14)

in formula (14), Qt₁For belt conveying capacity, P₂For horizontal transport of the power, P, required by the belt₃For the belt to promote the high required power of load, K is the motor resistance coefficient, L is belt transport horizontal distance, H is belt transport vertical height.

Further, the real-time capacity Qt of the crusher₂Calculated by the following formula:

Qt₂＝635×U×cosφ×(I₃-I₂)/[635×U×cosφ×(I₂-I₁)/3.6Gm×V+L₀×sinθ] (15)

in the formula (15), Qt₂The capacity of the crusher is real-time capacity, and the unit is ton/hour; cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in the idle state of the finished belt, I₃The working current of the belt motor is finished, Gm is the quality of the conveying belt, the carrier roller and the steering roller, V is the belt speed, and L is₀Is the belt length, theta is the belt inclination angle.

Crushing machineWithin a fixed time (t)₁To t₂) The total yield m of (a) is calculated by the following formula:

in the formula (16), m is the total yield of the crusher in a fixed time and is expressed in tons; qt₂The real-time capacity of the crusher is realized.

Compared with the prior art, the method for measuring the working capacity of the mobile crusher obtains the power of the belt conveyor, wherein the power of the belt conveyor comprises the power P required by the idling belt₁The power P required by the horizontal transmission load of the belt₂And the power P required by the belt for lifting the load height₃(ii) a Measuring motor idling current I of finished product motor of crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃(ii) a According to the obtained power of the belt conveyor and the measured idle current I of the motor of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃Belt conveying vertical height H, belt conveying horizontal distance L, motor resistance coefficient K and belt conveying amount Qt₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time. According to the working capacity metering method of the mobile crusher, the effective output power of a belt motor of the crusher is calculated by measuring the no-load and load current of the motor, the weight of sand conveyed by the belt is inversely calculated by assisting the parameters such as the inclination angle of the belt, the length of the belt, the self weight of the belt and the like, and the mass of the sand conveyed by a finished belt of the crusher can be indirectly measured without directly weighing the difficult-to-realize scheme such as direct weighing; the measuring means is simple and reliable, is not limited by the posture of the crusher, the inclination angle of the belt and the like, and is suitable for various working condition sites; the integration level is high, and only a fixing and control system is neededThe system communication protocol can be used as a universal component.

Preferably, please refer to fig. 2, fig. 2 is a functional block diagram of an embodiment of the mobile crusher working capacity metering system provided by the present invention, in this embodiment, the mobile crusher working capacity metering system includes an obtaining module 10, a measuring module 20, a first calculating module 30 and a second calculating module 40, wherein the obtaining module 10 is configured to obtain a power of a belt conveyor, and the power of the belt conveyor includes a power P required by a belt idling₁The power P required by the horizontal transmission load of the belt₂And the power P required by the belt for lifting the load height₃(ii) a A measuring module 20 for measuring the motor idle current I of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃. A first calculation module 30 for calculating the motor idle current I of the finished crusher motor according to the acquired power of the belt conveyor and the measured motor idle current I₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃The device comprises a belt conveying vertical height H, a belt conveying horizontal distance L and a motor resistance coefficient K. A second calculation module 40 for calculating the power P required for idling of the belt₁Power P consumed when belt is loaded₂+P₃The belt conveying vertical height H, the belt conveying horizontal distance L and the motor resistance coefficient K are calculated, and the belt conveying amount Qt is calculated₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time.

The power of the belt conveyor is composed of three parts, namely the power P required by the idle belt₁Power P required for horizontal belt conveying load₂And the power P required by the belt for lifting the load height₃。

The calculation formula of the total power of the belt conveyor is as follows:

P₀＝[C×f×L×(3.6Gm×V+Qt)+Qt×H]/367 (17)

in formula (17), P₀The total power of the belt conveyor is C, the damping coefficient of a conveying belt and a bearing (belt inherent constant), f is the damping coefficient of a carrier roller (belt inherent constant), L is the effective horizontal conveying distance of the belt conveyor (belt inherent constant), Gm is the mass of the conveying belt, the carrier roller and a steering roller (belt inherent constant), V is the belt speed (constant can be roughly considered under the condition of no serious overload because of the fixed frequency of a motor), Qt is the conveying capacity of the belt (unit ton/hour), and H is the vertical conveying height of the belt.

The power is split into the three parts, namely:

first, the power P required by the belt in idle₁Comprises the following steps:

P₁＝(C×f×L×3.6Gm×V)/367 (18)

in the formula (18), P₁The power required by the belt in idling is C, the damping coefficient of a conveying belt and a bearing is F, the damping coefficient of a carrier roller is L, the effective horizontal conveying distance of the belt conveyor is L, the mass of the conveying belt, the carrier roller and a steering roller is Gm, and the belt speed is V.

Secondly, the belt horizontally transmits the power P required by the load₂Comprises the following steps:

P₂＝(C×f×L×Qt₁)/367 (19)

in the formula (19), P₂The power required by the belt to horizontally convey the load is C the damping coefficient of the conveyer belt and the bearing, f the damping coefficient of the carrier roller, L the effective horizontal conveying distance of the belt conveyor and Qt₁The belt conveying amount.

Thirdly, the power P required by the belt to lift the load height₃Comprises the following steps:

P₃＝Qt₁×H/367 (20)

in the formula (20), P₃Power required for lifting the height of the load, Qt₁The belt conveying amount is shown as H, and the vertical height of the belt conveying is shown as H.

When the belt motor of the crusher is not connected with the belt, the idle current of the motor is measured to be I through the current transducer₁(fixed value, each device only needs to measure once). When the finished product belt of the crusher runs in no-load operation after being unfolded, the finished product belt of the crusher passes through the inclination angle sensorThe device measures the inclination angle theta of the belt, and measures the current of the finished belt which is unfolded in place but does not transmit load sand through the current transducer, namely the current of the motor in the idle state of the finished belt is I₂. When the crusher starts to work, the working current of the loaded finished belt motor is measured to be I in real time through the current transducer₃。

According to a motor power calculation formula, the self no-load power consumption of the motor can be calculated:

in the formula (21), U is the power supply voltage, cos phi is the motor power factor, and both are known terms; i is₁Is the motor idling current of the finished product motor of the crusher.

Power P required when belt is idle₁Calculated by the following formula:

in the formula (22), P₁U is the power supply voltage, cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂The motor current is in the idle state of the finished belt.

Power P consumed when belt is loaded₂+P₃Calculated by the following formula:

in the formula (23), P₂For horizontal transport of the power, P, required by the belt₃The power required for elevating the height of the load for the belt, U is the supply voltage, cos phi is the motor power factor, I₂Motor current in the idle state of the finished belt, I₃The finished product of the belt motor is the working current.

The belt transport vertical height H is calculated by the following formula:

H＝L₀×sinθ (24)

in the formula (24), H is the vertical height of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

The belt conveying horizontal distance L is calculated by the following formula:

L＝L₀×cosθ (25)

in the formula (25), L is the horizontal belt conveying distance, L₀Is the belt length, theta is the belt inclination angle.

Power P required when belt is idle₁Calculated by the following formula:

formula (26), P₁U is the power supply voltage, cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂The motor current is in the idle state of the finished belt.

Power P consumed when belt is loaded₂+P₃Calculated by the following formula:

in the formula (27), P₂For horizontal transport of the power, P, required by the belt₃The power required for elevating the height of the load for the belt, U is the supply voltage, cos phi is the motor power factor, I₂Motor current in the idle state of the finished belt, I₃The finished product of the belt motor is the working current.

The belt transport vertical height H is calculated by the following formula:

H＝L₀×sinθ (28)

in the formula (28), H is the vertical height of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

The belt conveying horizontal distance L is calculated by the following formula:

L＝L₀×cosθ (29)

in the formula (29), L is the horizontal distance of belt conveying, L₀Is the belt length, theta is the belt inclination angle.

Belt conveying amount Qt₁Calculated by the following formula:

Qt₁＝(P₂+P₃)×367/(K×L+H) (30)

in the formula (30), Qt₁For belt conveying capacity, P₂For horizontal transport of the power, P, required by the belt₃For the belt to promote the high required power of load, K is the motor resistance coefficient, L is belt transport horizontal distance, H is belt transport vertical height.

Further, the real-time capacity Qt of the crusher₂Calculated by the following formula:

gt₂＝635×U×cosφ×(I₃-I₂)/[635×U×cosφ×(I₂-I₁)/3.6Gm×V+L₀×sinθ] (31)

in formula (31), Qt₂The capacity of the crusher is real-time capacity, and the unit is ton/hour; cos phi is the motor power factor, I₁Motor idle current for the finished motor of the crusher, I₂Motor current in the idle state of the finished belt, I₃The working current of the belt motor is finished, Gm is the quality of the conveying belt, the carrier roller and the steering roller, V is the belt speed, and L is₀Is the belt length, theta is the belt inclination angle.

The crusher is in a fixed time (t)₁To t₂) The total yield m of (a) is calculated by the following formula:

in the formula (32), m is the total yield of the crusher in a fixed time and is expressed in tons; qt₂The real-time capacity of the crusher is realized.

The present embodiment provides aCompared with the prior art, the working capacity metering system of the mobile crusher adopts the acquisition module, the measurement module, the first calculation module and the second calculation module, and obtains the power of the belt conveyor, wherein the power of the belt conveyor comprises the power P required by the idling belt₁The power P required by the horizontal transmission load of the belt₂And the power P required by the belt for lifting the load height₃(ii) a Measuring motor idling current I of finished product motor of crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃(ii) a According to the obtained power of the belt conveyor and the measured idle current I of the motor of the finished product motor of the crusher₁Belt inclination angle theta, finished belt idling state motor current I₂Working current I of finished belt motor₃Calculating the power P required by the belt in idle₁Power P consumed when belt is loaded₂+P₃Belt conveying vertical height H, belt conveying horizontal distance L, motor resistance coefficient K and belt conveying amount Qt₁Real-time capacity Qt of crusher₂And the total yield m of the crusher in a fixed time. According to the working capacity metering system of the mobile crusher, the effective output power of the belt motor of the crusher is calculated by measuring the no-load and load current of the motor, the weight of sand conveyed by the belt is inversely calculated by assisting the parameters such as the inclination angle of the belt, the length of the belt, the self weight of the belt and the like, and the mass of the sand conveyed by a finished product belt of the crusher can be indirectly measured without directly weighing the difficult-to-realize scheme; the measuring means is simple and reliable, is not limited by the posture of the crusher, the inclination angle of the belt and the like, and is suitable for various working condition sites; the integration level is high, and the universal element can be used as a universal element only by setting a communication protocol with a control system.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.