CN206288714U - For the protection device of a kind of anti-improper feeding landslide of cantilever type bucket-wheel reclaimer - Google Patents

Abstract

The utility model discloses a protection device for preventing improper reclaiming and landslides for a cantilever type bucket wheel reclaimer. The method is applied to a cantilever type bucket wheel stacker reclaimer or a cantilever type bucket wheel reclaimer For material picking operation, measure the horizontal distance L between the material picking surface and the adjacent support surface, and set three alarm distance values A ₁ , A ₂ , A ₃ according to the repose angle of the material, and A ₁ >A ₂ >A ₃ According to the comparison result of the detection value and the alarm distance value, it is determined whether the stockpile has a risk of collapse, and thus it is decided whether to continue to take the material; The smart support is fixed on the cantilever bucket wheel reclaimer or the cantilever bucket wheel stacker reclaimer. The distance measuring sensor and the sensor smart support are arranged symmetrically on both sides of the bucket wheel. The distance measuring sensor is electrically connected to the controller, and the distance measuring The sensor transmits the detected distance signal to the controller, and the controller is used to analyze the real-time distance to draw a conclusion on whether to stop the operation.

Description

A protective device against improper reclaiming and landslide for cantilever bucket wheel reclaimer

technical field

The utility model relates to a protection device for preventing improper reclaiming and landslide for a cantilever type bucket wheel reclaimer, which belongs to the field of bulk material stacking and reclaiming equipment.

Background technique

Since the bulk material has a maximum single-side angle to the ground that can maintain a natural and stable state when stacked, that is, the angle of repose. After this angle is formed, if the bulk material is added to the pile, it will slide down naturally; and during the reclaiming process, if the position of the reclaiming operation is improper, so that part of the angle of the pile is smaller than the angle of repose, the pile will fall. Landslide accidents are prone to occur. During the reclaiming operation, if the angle of the material pile at the reclaiming operation surface is too small, it will not only cause the material pile to collapse, but also may cause safety accidents to the bucket wheel, bucket wheel reclaimer, nearby equipment and personnel. The reclaiming position of the cantilever bucket wheel reclaimer is determined by the movement of the cantilever, and the reclaiming position is flexible and not fixed, so the problem of improper reclaiming position or angle is easy to occur. Therefore it is very necessary to develop and design a protection method and a protection device for avoiding landslide when the cantilever type bucket wheel reclaimer is reclaimed.

Contents of the invention

In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a protection device for cantilever bucket wheel reclaimers that can prevent the material surface from collapsing due to improper reclaiming.

For realizing above-mentioned purpose of the invention, the technical scheme that the utility model adopts is as follows:

The purpose of this utility model is to provide a protection method for preventing improper reclaiming and landslides for stackers and reclaimers. The method is applied to the reclaiming operation of cantilever bucket wheel stackers and reclaimers or cantilever bucket wheel reclaimers. , measure the horizontal distance L between the feeding surface (i.e. the upper working surface) and the adjacent supporting surface (i.e. the lower working surface), and set multiple alarm distance values according to the repose angle of the material, preferably three alarm distance values A ₁ , A ₂ and A ₃ , and A ₁ >A ₂ >A ₃ ; where:

When L>A ₁ , the current feeding surface is in a safe position;

When A ₁ <L<A ₂ , the current pick-up surface position is near the best position;

When A ₂ <L<A ₃ , the current taking surface position is close to the landslide danger zone;

When L<A ₃ , the current taking surface position is very close to the landslide dangerous area.

Preferably, L is the shortest distance between the supporting surface of the stock pile and the tangent line of the material taking surface in the horizontal direction.

Preferably, when there may be multiple detection results for the horizontal distance L, the minimum value greater than 0 is taken as the measurement result.

Preferably, the horizontal distances of the feeding surface and the supporting surface are detected respectively, and the horizontal distance L is obtained by calculation.

Preferably, the alarm distance value A is less than the horizontal distance L, that is Where d is the vertical distance between two tangent points of two adjacent working surfaces.

Preferably, the vertical distance between adjacent feeding surfaces is d, 0<d<0.6D, and D is the diameter of the bucket wheel.

Preferably, according to claim 1, the protection method for preventing improper reclaiming and landslide is characterized in that the setting ranges of alarm values A ₁ , A ₂ and A ₃ are:

Another object of the invention of the present utility model is to provide a device using the protection method for preventing improper material taking and landslides, including: a distance measuring sensor, a sensor smart bracket and a controller, and the distance measuring sensor is fixed by sensing its smart bracket On the cantilevered bucket wheel reclaimer or the cantilevered bucket wheel stacker reclaimer, the distance measuring sensor and the smart sensor support are arranged symmetrically on both sides of the bucket wheel, and the distance measuring sensor is electrically connected to the controller, and the distance measuring sensor will detect The received distance signal is transmitted to the controller, and the controller is used to analyze the real-time distance to draw a conclusion whether to stop the operation.

Preferably, the ranging sensor is set on the arm frame 0.1-2m away from the bucket wheel above the horizontal central axis of the bucket wheel, and the two groups of sensors are symmetrically distributed with respect to the bucket wheel.

Preferably, each group of sensors is at least one independent ranging sensor.

More preferably, a laser ranging sensor, a two-dimensional laser scanner, a three-dimensional laser scanner, an ultrasonic distance sensor, a radar wave distance sensor or a sonar sensor.

Preferably, according to different repose angles of materials, the controller is provided with a multi-position switch to adjust different material alarm distance values.

As a preferred embodiment, three alarm distance values A1, A2, and A3 are set according to the angle of repose of the material, and the controller is provided with a corresponding alarm device, wherein,

When L>A1, the alarm device reminds that the reclaiming operation of this layer can continue to move forward;

When A1<L<A2, the alarm device reminds that the reclaiming operation of this layer can be stopped;

When A2<L<A3, the alarm device reminds the material picking operation on this layer to stop immediately;

When L<A3, the alarm device sends out an alarm reminder.

More preferably, the controller automatically stops the swinging and pitching movement of the arm frame of the bucket wheel reclaimer, and stops the forward movement of the bucket wheel reclaimer.

More preferably, the controller is provided with a shielding button, which is used to shield the automatic control shutdown protection action, and only retains the alarm and warning light prompting functions.

Preferably, the intelligent bracket fixes the ranging sensor on the boom of the cantilever bucket wheel reclaimer or the cantilever bucket wheel stacker reclaimer.

More preferably, the implementation of the smart support includes: a mechanical structure, a hydraulic servo system, an electrical servo system or a pneumatic servo system.

The protection method provided by the utility model is used to prevent a material pile collapse accident due to improper material reclaiming of a cantilever bucket-wheel stacker-reclaimer or a cantilever-type bucket-wheel blocking machine during reclaiming. A protective device for preventing improper reclaiming and landslides for cantilever bucket wheel reclaimers Accurately measure the horizontal distance between the material surfaces and the angle between the cut surfaces, and can provide data reference for operators in time, and the alarm device is optional Automatically or manually stop the reclaiming operation, and alarm step by step, so that the operator can grasp the situation of the reclaiming surface of the material, make timely adjustments, and eliminate the safety hazard of the collapse of the pile. The life safety of personnel and the property safety of equipment are guaranteed, and it is suitable for widespread use in large stockyards.

Description of drawings

Fig. 1 is a schematic diagram of the protective device for preventing improper material taking and landslide provided by the utility model.

Fig. 2 is a left view of the protective device for preventing improper material taking and landslide provided by the utility model.

reference sign

101 bucket wheel, 102L left distance sensor, 102R right distance sensor, 103 controller, 104L left distance sensor smart bracket, 104R right distance sensor smart bracket, 105 boom.

detailed description

Below in conjunction with embodiment and comparative example the utility model is described in further detail and completely.

The protection method for preventing improper reclaiming and landslide described in this embodiment is used for the protection device for preventing improper reclaiming and landslide of the reclaimer, and is used to prevent the material pile collapse accident during the reclaiming operation of the bucket wheel reclaimer. Wheel reclaimers include cantilever bucket wheel reclaimers or cantilever bucket wheel stacker reclaimers.

As shown in Figures 1 and 2, during the reclaiming operation of the bucket wheel reclaimer, it can be known from the geometric relationship shown in the figure: L=m-n; where n is determined and known when the distance measuring sensor 103 is installed, and m is the measuring distance. The sensor 103 measures the distance from the reference point of the sensor to the front end of the feeding surface (that is, the tangent point in the figure).

It can also be seen from the geometric relationship shown in the figure:

d=h(II)

So there are:

In the picture:

L is the shortest distance between the lower supporting surface of the stockpile and the tangent line of the reclaiming surface in the horizontal direction;

m is the distance from the distance sensor to the tangent point of the stockpile reclaiming surface;

n is the distance from the tangent point measured by the distance sensor to the support surface of the lower layer of the pile;

d is the vertical distance between the two tangent points;

h is the opening layer height of the reclaiming operation, usually d≤0.6D;

D is the diameter of the bucket wheel;

θ is the angle between the tangent plane of the lower support surface of the stockpile and the reclaiming surface and the horizontal plane.

It can be known from formula (III) that if L is too small, then θ is smaller than the angle of repose of the material being operated, and at this time, the stockpile is prone to landslide accidents. The accurate control of L is the guarantee to ensure that no safety accidents occur. The protection method and equipment of the utility model can accurately and automatically measure L. The controller 103 calculates L through the formula, so as to determine whether the current position of the material taking surface is appropriate according to the value of L, and then ensure that the position of the material taking surface of the current layer will not be too far ahead to cause the risk of landslide. The specific calculation process of the protection method is as follows:

1) Set up a set of distance measuring sensors on both sides of the horizontal center axis of the bucket wheel above 0.1D and 0.5m away from the bucket wheel. The number of sensors in each set is at least one, and multiple sensors can monitor the material layer at the same time;

2) When the ranging result L of any one of the two sets of sensors is less than 0, it means that the sensor is damaged; if the measurement results of both sensors are greater than 0, the smaller value of the measurement results of the two sensors is the measurement result ;

3) Set three alarm distance values A ₁ , A ₂ , and A ₃ according to the repose angle of the material, and A ₁ >A ₂ >A ₃ ; and set corresponding alarm devices according to the three alarm values, preferably indicator lights, in,

When L>A ₁ , the current reclaiming surface is in a safe position, and the indicator light reminds that the reclaiming operation of this layer can continue to move forward;

When A ₁ <L<A ₂ , the current pick-up surface position is near the optimum position, and the indicator light reminds that the pick-up operation of this layer can be stopped;

When A ₂ <L<A ₃ , the current reclaiming surface is close to the landslide danger area, and the indicator light reminds the reclaiming operation of this layer to stop immediately;

When L<A ₃ , the current pick-up surface is very close to the landslide danger area, and the indicator light will send out an alarm;

4) The controller automatically stops the rotation and pitching movement of the arm frame of the bucket wheel reclaimer, and stops the forward movement of the bucket wheel reclaimer

5) This protection method also has a shielding function. When the shielding function is turned on, this method cannot automatically stop the rotation and pitching movement of the arm frame of the bucket wheel reclaimer, and stop the forward movement of the bucket wheel reclaimer. It only has prompts and alarms Function.

The protection device adopting the protection method of the protection method against improper material taking and landslide of the present utility model includes a group of ranging sensors arranged above the horizontal central axis of the bucket wheel 101 0.1D and 1m away from the bucket wheel, and each group of distance sensors is at least One set is arranged horizontally, that is to say, a group of ranging sensors are installed on the left and right sides of the bucket wheel 101 when viewed from the translational movement direction of the belt of the boom 105 . The ranging sensor includes, but is not limited to, any of the following: a laser ranging sensor, a two-dimensional laser scanner, a three-dimensional laser scanner, an ultrasonic distance sensor, a radar wave distance sensor, or a sonar sensor. As a preferred implementation of this embodiment, when viewed from the left side of the bucket wheel, a left distance sensor 102L and a right distance sensor 102R are provided on both sides of the bucket wheel 101 .

The distance information obtained by the distance measuring sensor is remotely fed back to the controller 103 . Multiple sets of alarm values A ₁ , A ₂ , A ₃ are stored in 103 according to the angle of repose of different materials, where A ₃ <L, A ₁ >L and A ₁ >A ₂ >A ₃ . Corresponding to the alarm values A ₁ , A ₂ , and A ₃ , there are multi-position switches on the driver's console, and different alarm values can be selected according to the material to compare the detection value L of the distance measuring sensor. The controller compares the currently measured L with the alarm set value to determine that the current operation or reminder should be performed, and prompts the driver to perform the corresponding operation or automatically controls the shutdown protection through the indicator light.

In this embodiment, there is also a shielding button on the driver's console, which can shield the automatic control shutdown protection action, but will not stop the indicator light prompt and alarm, so that the operator on the driver's console can freely control the cantilever bucket wheel reclaimer .

The distance measuring sensor is installed on the boom of the bucket wheel reclaimer through a smart bracket. Specifically, the left distance sensor smart bracket 104L is connected to the boom 105 at the lower end of the left distance sensor 102L, and the right distance sensor smart bracket 104R is connected to the boom 105 at the lower end of the right distance sensor 102R. When the arm frame of the bucket wheel reclaimer is pitching, the smart bracket can ensure that the distance measuring sensor remains unchanged in the vertical direction with the bucket wheel rotation axis, and the measuring direction of the distance measuring sensor remains unchanged. The smart support can be realized by (including but not limited to) any method in mechanical structure, hydraulic servo system, electrical servo system or pneumatic servo system.

The type and quantity of distance measuring sensors cannot be used as a limitation to the present utility model. The distance measuring method and equipment capable of measuring the distance of the material layer should be considered to be included in the scope of protection of this application, and the type and quantity of distance measuring sensors should not be used as a limit to the present invention. Limitations on this Application.

The type and quantity of smart brackets can not be used as a limitation of the present invention. The equipment capable of supporting distance measuring sensors should be considered to be included in the scope of protection of this application, and the type and quantity of smart brackets should not be used as restrictions on this application.

Finally, it is necessary to explain here that the above embodiments are only used to further describe the technical solutions of the utility model in detail, and cannot be interpreted as limiting the protection scope of the utility model. Some non-essential improvements and adjustments all belong to the protection scope of the present utility model.

Claims (10)

1. A protective device for preventing improper reclaiming and landslides for cantilevered bucket wheel reclaimers, characterized in that the protective device protects cantilevered bucket wheel reclaimers or cantilevered bucket wheel stackers and reclaimers, including: Distance sensor, sensor smart bracket and controller. The distance measuring sensor is fixed on the cantilever bucket wheel reclaimer or cantilever bucket wheel stacker and reclaimer by sensing its smart bracket. The two sides are arranged symmetrically, the distance measuring sensor is electrically connected to the controller, and the distance signal detected by the distance measuring sensor is transmitted to the controller, and the controller is used to analyze the real-time distance to draw a conclusion on whether to stop the operation. 2. The protective device for preventing improper material taking and landslide according to claim 1, characterized in that: the ranging sensor is set on the arm frame above the horizontal central axis of the bucket wheel and 0.1-2m away from the bucket wheel, and two sets of sensors The distribution is symmetrical about the bucket wheel. 3. The protection device against improper material taking and landslide according to claim 2, characterized in that: each group of sensors is at least one independent distance measuring sensor. 4. The protective device for preventing improper material taking and landslide according to claim 3, wherein the ranging sensor comprises: a laser ranging sensor, a two-dimensional laser scanner, a three-dimensional laser scanner, an ultrasonic distance sensor, a radar wave distance sensor sensors or sonar sensors. 5. The protection device against improper material taking and landslide according to claim 1, characterized in that: according to different repose angles of materials, the controller is provided with multi-position switches to adjust different material alarm distance values. 6. The protection device against improper material taking and landslide according to claim 5, characterized in that: according to the angle of repose of the material, three alarm distance values A ₁ , A ₂ , A ₃ are set, and the controller is provided with a corresponding alarm device ,in, When L>A ₁ , the alarm device reminds that the reclaiming operation of this layer can continue to move forward; When A ₁ <L<A ₂ , the alarm device reminds that the reclaiming operation of this layer can be stopped; When A ₂ <L<A ₃ , the alarm device reminds that the reclaiming operation of this layer should be stopped immediately; When L<A ₃ , the alarm device will send out an alarm reminder. 7. The protection device against improper reclaiming and landslide according to claim 6, characterized in that: the controller automatically stops the rotation and pitching movement of the arm frame of the bucket wheel reclaimer, and stops the forward movement of the bucket wheel reclaimer. 8. The protection device against improper material taking and landslide according to claim 6, characterized in that: the controller is equipped with a shielding button for shielding the automatic control shutdown protection action, and only retains the alarm and reminder light reminder functions. 9. The protective device for preventing improper reclaiming and landslide according to claim 1, characterized in that: the intelligent bracket fixes the distance measuring sensor on the boom of the cantilevered bucket-wheel reclaimer or the cantilevered bucket-wheel stacker-reclaimer . 10. The protection device for preventing improper material retrieving and landslide according to claim 8, characterized in that the implementation of the intelligent support includes: mechanical structure, hydraulic servo system, electrical servo system or pneumatic servo system.