阅读说明：本技术 一种皮带机的皮带纠偏装置及其纠偏方法 (Belt deviation rectifying device and method of belt conveyor ) 是由 贾方俊 李宁 于 2018-06-14 设计创作，主要内容包括：本发明涉及一种皮带机的皮带纠偏装置及其纠偏方法,属于皮带运输技术领域。该装置包括底板,辊架安装在底板上；底板的一侧与机架铰接并形成位于皮带机的运行中心线上的铰接点,底板与铰接点相对的一侧边上制有腰型孔,液压缸通过穿设于腰型孔的销杆与底板形成活动铰接,液压缸的双出杆伸出的两端均固定在机架上。该方法通过实时测量皮带偏移角度和底板摆动角度值与预设角度最大值、最小值的比较计算,控制液压缸往复移动从而带动底板摆动来纠正皮带的偏移。本发明的装置和方法在保证对皮带偏移实时纠偏同时,避免了皮带跑偏引起的皮带撕边和平稳性差的现象,还有效延长了皮带的使用寿命。(The invention relates to a belt deviation rectifying device and a belt deviation rectifying method of a belt conveyor, and belongs to the technical field of belt transportation. The device comprises a bottom plate, wherein a roller frame is arranged on the bottom plate; one side of the bottom plate is hinged with the frame and forms a hinge point located on the operation central line of the belt conveyor, a waist-shaped hole is formed in one side edge of the bottom plate opposite to the hinge point, the hydraulic cylinder is movably hinged with the bottom plate through a pin rod penetrating through the waist-shaped hole, and two ends, extending out of two extending rods, of the hydraulic cylinder are fixed on the frame. According to the method, the deviation angle of the belt and the swing angle value of the bottom plate are measured in real time, and the maximum value and the minimum value of a preset angle are compared and calculated, so that the hydraulic cylinder is controlled to move in a reciprocating mode to drive the bottom plate to swing to correct the deviation of the belt. The device and the method provided by the invention can ensure real-time deviation correction of the belt deviation, avoid the phenomenon of belt edge tearing and poor stability caused by belt deviation, and effectively prolong the service life of the belt.)

1. A belt deviation correcting device of a belt conveyor is arranged on a frame of the belt conveyor and comprises a roller frame and a double-rod hydraulic cylinder; the method is characterized in that: the roller frame is arranged on the bottom plate;

one side of the bottom plate is hinged with the frame to form a hinge point positioned on the operation central line of the belt conveyor, a waist-shaped hole is formed in one side edge of the bottom plate opposite to the hinge point, the hydraulic cylinder is movably hinged with the bottom plate through a pin rod penetrating through the waist-shaped hole, and two extending ends of a double extending rod of the hydraulic cylinder are fixed on the frame; the bottom plate is provided with an outward extending supporting roller, the rack is provided with an arc-shaped guide groove, and the extending end of the supporting roller is inserted into the arc-shaped guide groove and forms rolling fit with the arc-shaped guide groove; when the belt deviates left and right, the hydraulic cylinder moves linearly in a reciprocating manner along a direction perpendicular to the operation center line and drives the bottom plate to swing back and forth on a section of arc line with the hinge point as the center of circle.

2. The belt deviation correcting device of the belt conveyor of claim 1, characterized in that: the belt conveyor is characterized by further comprising a first angle sensor, a second angle sensor and a controller, wherein the first angle sensor is mounted on the belt conveyor and used for sending a first angle value generated by the first angle sensor to the controller when the belt deviates; the second angle sensor is installed at the pin hole and used for sending a second angle value generated by the second angle sensor when the base plate swings to the controller.

3. The belt deviation correcting device of the belt conveyor of claim 1 or 2, characterized in that: the bottom plate is hinged to the rack through a bracket; the roller frame is positioned at the upper part of the rack and used for supporting an upper belt of the belt, the upper belt is the surface which faces upwards and bears materials when the belt runs, a V-shaped carrier roller group consisting of three carrier rollers and two side baffle rollers are arranged on the roller frame, and the supporting rollers are arranged on one side edge of the bottom plate opposite to the hinged point; the extending end of the supporting roller is provided with a guide wheel which is in rolling fit with the arc-shaped guide groove; when the hydraulic cylinder drives the bottom plate to move, the baffle roller forms an arc motion track which takes the hinge point as the vertex rotation, and the bottom plate forms a sector motion track which takes the hinge point as the vertex rotation.

4. The belt deviation correcting device of the belt conveyor of claim 1 or 2, characterized in that: the hinge point is hinged on the rack through a hanging bracket; the roller frame is positioned at the lower part of the rack and used for supporting a lower belt of the belt, the lower belt is the other side which faces downwards and does not bear materials when the belt runs, a long carrier roller and two side stop rollers are arranged on the roller frame, and the supporting roller is arranged on one side of the bottom plate opposite to the hinged point; and the extending end of the supporting roller is provided with a guide wheel in sliding fit with the arc-shaped guide groove.

5. The belt deviation rectifying device of the belt conveyor of claim 3 or 4, characterized in that: the included angles between the side baffle rollers and the rotary center lines of the carrier rollers on two sides of the V-shaped carrier roller group or the long carrier roller are both 45-60 degrees.

6. The belt deviation correcting device of the belt conveyor of claim 1, characterized in that: the hydraulic station is arranged near the belt conveyor and is connected with the hydraulic cylinder through an oil pipe.

7. The apparatus of claim 2, wherein the following steps are performed:

the method comprises the following steps: starting the belt conveyor;

step two: the minimum value of the first angle value when the belt allows the minimum deviation, the maximum value of the first angle value when the belt allows the maximum deviation and the maximum value of the second angle value when the bottom plate allows the maximum swing are preset in the controller;

step three: the controller compares the first angle value measured by the first angle sensor in real time with a minimum value of the first angle value and a maximum value of the first angle value, respectively,

if the first angle value does not exceed the minimum value of the first angle value, the hydraulic cylinder does not work;

if the first angle value exceeds the maximum value of the first angle value, the belt conveyor stops working;

if the first angle value exceeds the minimum value of the first angle value and does not exceed the maximum value of the first angle value, the hydraulic cylinder works and executes the next step;

step four: calculating the swing angle value required to be reached by the bottom plate according to a formula alpha-k delta; where a is the value of the wobble angle,

where k is the ratio of the maximum value of the second angle value to the maximum value of the first angle value,

wherein Δ is the difference between the first angle value and the minimum value of the first angle value;

step five: the controller controls the hydraulic cylinder to reciprocate along the rod and drives the bottom plate to swing left and right to reach the swing angle value;

step six: when the second angle value measured by the second angle sensor in real time reaches the swing angle value, the controller controls the hydraulic cylinder to stop and calculates delay time T delay according to a formula T which is L/V, wherein L is the length of the belt between the first angle sensor and the second angle sensor, and V is the running speed of the belt;

step seven: and returning to the step three for repeated execution after the time delay action is completed.

8. The apparatus of claim 7, wherein: the first angle value and the second angle value have positive and negative values with equal numbers; the first angle value is respectively corresponding to positive values and negative values of right deviation and left deviation of the belt, and the swing angle value is respectively corresponding to a first swing angle value alpha of left swing and right swing of the bottom plate₁And a second swing angle value alpha₂；

The first swing angle valueα₁According to the formula alpha₁＝kΔ₁Calculation of in the formula₁Is the difference between a positive value of the first angle value and a positive value of the minimum value of the first angle value,

the second swing angle value alpha₂According to the formula alpha₂＝kΔ₂Calculation of in the formula₂Is the difference between the negative value of the first angle value and the negative value of the minimum value of the first angle value.

Technical Field

The invention relates to a belt deviation rectifying device of a belt conveyor and a belt deviation rectifying method, belonging to the technical field of belt transportation.

Background

The belt conveyor is in the operation in-process, inevitably can produce the off tracking, the off tracking reason that arouses has the multiple, the change of the blanking point that causes because of reasons such as long-pending material appears in the use not just and, the tensile inequality in belt both sides, the installation of upper and lower bearing roller is not just, first wheel, tailwheel and bend wheel etc. are installed not just, and there are reasons such as error of central line when the belt rack mounting, all can arouse the belt to produce the off tracking in the operation, serious belt off tracking phenomenon not only causes the material to shed, unfavorable environmental protection, still easily arouse the phenomenon such as the limit of tearing of belt, shorten the life of belt.

Although the existing belt deviation rectifying roller is provided with a roller frame, a carrier roller and two side blocking rollers are arranged on the roller frame, when a belt generates left-right deviation along the movement direction, when the deviation rectifying roller rotates, the two side blocking rollers and the edge of the belt can not be normally attached, proper friction force can not be kept between the two side blocking rollers, the friction force of one side blocking roller is greatly increased, the friction force of the other side is greatly reduced or even not reduced, and the deviation rectifying effect is not controlled because of the influence of the change of the friction force. Thereby failing to provide effective transition correction for the deviated belt and affecting the service life of the belt. In addition, the stability of roll stand during motion is not enough, produces jolting and inclining easily, increases the wearing and tearing of belt and bearing roller, and then influences the life of belt.

Disclosure of Invention

The invention aims to solve the technical problem that aiming at the defects of the prior art, the invention provides a deviation correcting device which can quickly respond to a belt of a belt conveyor and form effective pushing correction.

In order to achieve the above object, the first technical solution adopted by the present invention is: a belt deviation correcting device of a belt conveyor is arranged on a frame of the belt conveyor and comprises a roller frame and a double-rod hydraulic cylinder; the roller frame is arranged on the bottom plate; one side of the bottom plate is hinged with the frame to form a hinge point positioned on the operation central line of the belt conveyor, a waist-shaped hole is formed in one side edge of the bottom plate opposite to the hinge point, the hydraulic cylinder is movably hinged with the bottom plate through a pin rod penetrating through the waist-shaped hole, and two extending ends of a double extending rod of the hydraulic cylinder are fixed on the frame; the bottom plate is provided with an outward extending supporting roller, the rack is provided with an arc-shaped guide groove, and the extending end of the supporting roller is inserted into the arc-shaped guide groove and forms rolling fit with the arc-shaped guide groove; when the belt deviates left and right, the hydraulic cylinder moves linearly in a reciprocating manner along a direction perpendicular to the operation center line and drives the bottom plate to swing back and forth on a section of arc line with the hinge point as the center of circle.

The first technical scheme is further improved as follows: the belt conveyor is characterized by further comprising a first angle sensor, a second angle sensor and a controller, wherein the first angle sensor is mounted on the belt conveyor and used for sending a first angle value generated by the first angle sensor to the controller when the belt deviates; the second angle sensor is installed at the pin hole and used for sending a second angle value generated by the second angle sensor when the base plate swings to the controller.

The first technical scheme is further improved as follows: the bottom plate is hinged to the rack through a bracket; the roller frame is positioned at the upper part of the rack and used for supporting an upper belt of the belt, the upper belt is the surface which faces upwards and bears materials when the belt runs, a V-shaped carrier roller group consisting of three carrier rollers and two side baffle rollers are arranged on the roller frame, and the supporting rollers are arranged on one side edge of the bottom plate opposite to the hinged point; the extending end of the supporting roller is provided with a guide wheel which is in rolling fit with the arc-shaped guide groove; when the hydraulic cylinder drives the bottom plate to move, the baffle roller forms an arc motion track which takes the hinge point as the vertex rotation, and the bottom plate forms a sector motion track which takes the hinge point as the vertex rotation.

The first technical scheme is further improved as follows: the hinge point is hinged on the rack through a hanging bracket; the roller frame is positioned at the lower part of the rack and used for supporting a lower belt of the belt, the lower belt is the other side which faces downwards and does not bear materials when the belt runs, a long carrier roller and two side stop rollers are arranged on the roller frame, and the supporting roller is arranged on one side of the bottom plate opposite to the hinged point; and the extending end of the supporting roller is provided with a guide wheel in sliding fit with the arc-shaped guide groove.

The first technical scheme is further improved as follows: the included angles between the side baffle rollers and the rotary center lines of the carrier rollers on two sides of the V-shaped carrier roller group or the long carrier roller are both 45-60 degrees.

The first technical scheme is further improved as follows: the hydraulic station is arranged near the belt conveyor and is connected with the hydraulic cylinder through an oil pipe.

The correction device has the beneficial effects that:

1) rotatable pin joint through the bottom plate, and the activity that waist shape hole and the pneumatic cylinder of bottom plate formed is articulated, when making the pneumatic cylinder carry out straight reciprocating motion, can drive bottom plate and roller frame and both sides fender roller and form one and use this pin joint as the swing of one section pitch arc of centre of a circle, thereby make roller frame and both sides fender roller can follow the skew synchronous skew often of the left and right sides of belt, roller frame and both sides fender roller can remain throughout with the both sides of belt along good stable contact laminating, guarantee that roller frame and both sides fender roller form stable fender effort to the belt of skew, finally correct the belt of skew better, also reduce the friction of belt and both sides fender roller, increase the life of belt.

2) Because the two extension ends of the two extension rods of the hydraulic cylinder are equivalent to the extension of the other two hinged points of the bottom plate, the arc swing formed by the bottom plate, the carrier roller of the roller frame and the baffle rollers at the two sides of the bottom plate can be ensured to be always stabilized in a plane, the bumping and the inclination in the vertical direction can not be generated when the belt is corrected, the friction between the belt and the carrier roller is reduced, and the service life of the belt is prolonged.

The second technical scheme of the deviation correcting device matched with the first technical scheme of the invention is that the belt deviation correcting method of the belt conveyor comprises the following steps:

the method comprises the following steps: starting the belt conveyor;

step two: the minimum value of the first angle value when the belt allows the minimum deviation, the maximum value of the first angle value when the belt allows the maximum deviation and the maximum value of the second angle value when the bottom plate allows the maximum swing are preset in the controller;

step three: the controller compares the first angle value measured by the first angle sensor in real time with a minimum value of the first angle value and a maximum value of the first angle value, respectively,

if the first angle value does not exceed the minimum value of the first angle value, the hydraulic cylinder does not work;

if the first angle value exceeds the maximum value of the first angle value, the belt conveyor stops working;

if the first angle value exceeds the minimum value of the first angle value and does not exceed the maximum value of the first angle value, the hydraulic cylinder works and executes the next step;

step four: calculating the swing angle value required to be reached by the bottom plate according to a formula alpha-k delta; where a is the value of the wobble angle,

where k is the ratio of the maximum value of the second angle value to the maximum value of the first angle value,

wherein Δ is the difference between the first angle value and the minimum value of the first angle value;

step five: the controller controls the hydraulic cylinder to reciprocate along the rod and drives the bottom plate to swing left and right to reach the swing angle value;

step six: when the second angle value measured by the second angle sensor in real time reaches the swing angle value, the controller controls the hydraulic cylinder to stop and calculates delay time T delay according to a formula T which is L/V, wherein L is the length of the belt between the first angle sensor and the second angle sensor, and V is the running speed of the belt;

step seven: and returning to the step three for repeated execution after the time delay action is completed.

The perfection of the second technical scheme is as follows: the first angle value and the second angle value have positive and negative values with equal numbers; the first angle value is respectively corresponding to positive values and negative values of right deviation and left deviation of the belt, and the swing angle value is respectively corresponding to a first swing angle value alpha of left swing and right swing of the bottom plate₁And a second swing angle value alpha₂；

The first swing angle value alpha₁According to the formula alpha₁＝kΔ₁Calculation of in the formula₁Is the difference between a positive value of the first angle value and a positive value of the minimum value of the first angle value,

the second swing angle value alpha₂According to the formula alpha₂＝kΔ₂Calculation of in the formula₂Is the difference between the negative value of the first angle value and the negative value of the minimum value of the first angle value.

The correction method has the beneficial effects that: because: 1) the method comprises the steps that a first angle value of belt deflection and a second angle value of bottom plate swinging are measured in real time through an angle sensor, and meanwhile, the minimum value of the first angle value when the belt allows minimum deviation, the maximum value of the first angle value when the belt allows maximum deviation and the maximum value of the second angle value when the bottom plate allows maximum swinging are preset in a controller; 2) the actions of the hydraulic cylinder and the belt conveyor are controlled by comparing the first angle value with a preset first angle value minimum value and a preset first angle value maximum value; 3) calculating the real-time swing of the swing angle value of the bottom plate according to an original formula, thereby controlling a hydraulic cylinder to drive the bottom plate to correct the deviation of the inclined belt in real time; 4) and controlling the hydraulic cylinder to stop working and delay according to whether the second angle value reaches the swing angle value. Therefore, the belt has a good deviation rectifying effect, manual intervention is avoided, labor cost and personal injury accidents are reduced, energy is saved, consumption is reduced, environmental protection is facilitated, phenomena of belt edge tearing and the like caused by belt deviation are avoided, and the service life of the belt is prolonged.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the removal belt of FIG. 1 from a top view;

FIG. 3 is a schematic bottom view of the structure of FIG. 2;

FIG. 4 is a schematic structural view of a base plate of embodiment 1;

FIG. 5 is a schematic structural view of a portion of the assembly of FIG. 4;

FIG. 6 is a schematic structural view of embodiment 2 of the present invention;

FIG. 7 is a schematic illustration of the top view of FIG. 6 with the belt removed;

FIG. 8 is a schematic structural view of a base plate of embodiment 2;

FIG. 9 is a schematic structural diagram of a first angle sensor of the present invention;

fig. 10 is a schematic view showing a swing state of the base plate in the embodiment of the present invention.

The examples in the figure are: 1. the automatic belt feeding device comprises a belt, 2. a rack, 3. a tail pulley, 4. a belt conveyor upper carrier roller group, 5. a belt conveyor lower carrier roller group, 6. a blanking port, 7. a first angle sensor, 8, a first hanger, 9. an arc-shaped guide groove, 10. a second hanger, 11. a bracket, 12. a hydraulic station, 13. a controller, 14. a second angle sensor, 15. a hydraulic cylinder, 16. a third hanger, 801. a bottom plate, 802. a pin hole, 803. a kidney-shaped hole, 804. a support roller, 805. a side blocking roller, 806. a V-shaped carrier roller group, 807. an upper roller frame, 808. a long carrier roller, 809. a lower roller frame and 1201. an oil pipe.

Detailed Description

The following description of the embodiments of the present invention, with reference to the accompanying drawings, will provide further detailed descriptions of the embodiments of the present invention, such as the mutual positions and connection relationships between the related parts, the functions and working principles of the parts, and the methods, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention.