Downward belt conveyor decentralized speed reduction device and anti-piling processing method

Abstract

A downward belt conveyor decentralized speed reduction device, comprising a supporting wheel, a pressure wheel, an adjusting assembly; the supporting wheels are symmetrically and rotatably arranged on both sides of the frame of the conveyor, and the supporting wheels are consistent with the inclination direction of the carrier rollers; the adjusting assemblies are symmetrically arranged on both sides of the frame, and each adjusting assembly comprises a support, a telescopic cylinder and a connecting arm; the support is arranged on the side of the frame, the connecting arm is hingedly connected to the top of the support, the telescopic cylinder is longitudinally arranged on the support, and the upper end of the telescopic cylinder is rotatably connected to one end of the connecting arm; the pressure wheel is rotatably arranged on the end of the connecting arm close to the supporting wheel, and the axis of the pressure wheel is parallel to the axis of the supporting wheel. A downward belt conveyor decentralized speed reduction and anti-piling processing method is also provided, which controls the pressure wheel to approach the supporting wheel through the telescopic cylinder, clamps the conveyor belt between the pressure wheel and the supporting wheel, makes the conveyor belt form rolling contact with the pressure wheel and the supporting wheel, reduces the speed of the conveyor belt, and stops the conveyor belt until the conveyor belt stops; not only can the downward conveyor be stopped and braked, but also the conveyor belt can be prevented from piling up.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of belt conveyors, in particular to a decentralized speed reduction device for a downward belt conveyor and a method for preventing stacking. BACKGROUND

[0002] Belt conveyors can be divided into upward and horizontal conveyors and downward belt conveyors according to the angle of transportation. In the process of transportation, the belt of the upward and horizontal conveyors will not appear the phenomenon of "stacking" when stopping freely, stopping by using a brake, or stopping urgently. The downward belt conveyor usually stops by using a brake (in general, it cannot stop freely), and if the brake is installed at the unloading position (low point), the belt will appear the phenomenon of "stacking" when stopping urgently. When the belt appears the phenomenon of "stacking", a series of problems will be caused, such as belt breakage, runaway, material blockage (submersion) of the roadway, and the like. SUMMARY

[0003] In order to solve the above technical problems in the prior art, it is necessary to provide a decentralized speed reduction device for a downward belt conveyor.

[0004] A decentralized speed reduction device for a downward belt conveyor, comprising a speed reduction mechanism and a control box.

[0005] The speed reduction mechanism is arranged equidistantly along the conveying direction of the conveyor, and comprises a supporting wheel, a pressing wheel, and an adjusting assembly.

[0006] The supporting wheels are symmetrically and rotatably arranged on both sides of the frame of the conveyor, and the supporting wheels are consistent with the inclined direction of the carrier rollers of the conveyor, and the axes of the supporting wheels are parallel to the axes of the carrier rollers. A speed sensor is arranged in the supporting wheel, and the speed sensor is electrically connected to the control box through a wire.

[0007] The adjusting assembly is symmetrically arranged on the side of the frame, and comprises a support, an extension cylinder, and a connecting arm. The support is arranged on both sides of the frame of the conveyor, the connecting arm is hingedly connected to the top of the support, and the extension cylinder is longitudinally arranged on the support. The extension cylinder is electrically connected to the control box through a wire, and the upper end of the extension cylinder is rotatably connected to one end of the connecting arm.

[0008] The pressing wheel is rotatably arranged at one end of the connecting arm close to the supporting wheel, and the axis of the pressing wheel is parallel to the axis of the supporting wheel. A first pressure sensor is arranged in the pressing wheel, and the first pressure sensor is electrically connected to the control box through a wire.

[0009] Preferably, the supporting wheels are flush with the carrier rollers.

[0010] Preferably, a brake assembly for preventing rotation of the pressing wheel is arranged on the pressing wheel.

[0011] Preferably, the brake assembly comprises a brake disc, a guide rod; the guide rod is arranged above the pressure roller, and the axis of the guide rod is parallel to the axis of the pressure roller, the brake disc is slidingly arranged on the guide rod, and the brake disc is located on both sides of the pressure roller, and the brake disc moves along the guide rod by hydraulic drive; the brake disc is provided with a second pressure sensor, and the second pressure sensor is electrically connected with the control box through a wire.

[0012] Preferably, a protective cover is arranged above the brake disc.

[0013] It is also necessary to provide a decentralized speed reduction and anti-piling processing method for a downward belt conveyor.

[0014] A decentralized speed reduction and anti-piling processing method for a downward belt conveyor, using the decentralized speed reduction device for a downward belt conveyor described above, comprising a processing method when the belt conveyor starts, and a processing method when the belt conveyor stops;

[0015] The processing method when the belt conveyor stops comprises the following steps,

[0016] A1: the control box acquires a belt conveyor stop signal, and controls the telescopic cylinder to extend, so that the pressure roller extrudes the conveyor belt, and the conveyor belt forms rolling friction with the supporting roller and the pressure roller to reduce the speed of the conveyor belt;

[0017] A2: the control box acquires the real-time pressure value of the pressure roller on the conveyor belt detected by the first pressure sensor, and compares the real-time pressure value with the pressure value preset in the control box, if the pressure value meets the requirement, the next step is performed, if the pressure value does not meet the requirement, the telescopic cylinder continues to extend, and the pressure roller continues to extrude the conveyor belt until the pressure value meets the requirement;

[0018] A3: after the pressure value meets the requirement in step A2, the control box acquires the real-time speed value of the supporting roller detected by the speed sensor, and compares the real-time speed value with the speed value preset in the control box, if the speed value meets the requirement, the belt conveyor parking brake is completed, if the speed value does not meet the requirement, the control box acquires a brake assembly start signal, and controls the brake disc to brake to reduce the rotating speed of the pressure roller;

[0019] A4: the control box acquires the real-time pressure value of the pressure roller on the pressure roller detected by the second pressure sensor, and compares the real-time pressure value with the pressure value preset in the control box, if the pressure value meets the requirement, the next step is performed, if the pressure value does not meet the requirement, the control box continues to control the hydraulic system to drive the brake disc to apply pressure to the pressure roller until the pressure value meets the requirement;

[0020] A5: After the pressure value in step A4 meets the requirements, the control box again acquires the real-time rotating speed of the support wheel detected by the speed sensor, and compares the real-time speed value with the speed value preset in the control box. If the speed value meets the requirements, the parking brake of the belt conveyor is completed. If the speed value does not meet the requirements, it returns to step A1 for continuous processing until the speed value meets the requirements.

[0021] The processing method when the belt conveyor starts includes the following steps,

[0022] B1: The control box acquires the belt conveyor starting signal, and controls the hydraulic system to drive the brake disc to separate from the pressure roller.

[0023] B2: The control box acquires the real-time pressure value of the brake disc on the pressure roller detected by the second pressure sensor, and compares the real-time pressure value with the pressure value preset in the control box. If the pressure value meets the requirements, the next step is performed. If the pressure value does not meet the requirements, the control box continues to control the hydraulic system to drive the brake disc to continue to separate from the pressure roller until the pressure value meets the requirements.

[0024] B3: After the pressure value in step B2 meets the requirements, the control box controls the telescopic cylinder to retract.

[0025] B4: The control box acquires the real-time pressure value of the pressure roller on the conveyor belt detected by the first pressure sensor, and compares the real-time pressure value with the pressure value preset in the control box. If the pressure value meets the requirements, the next action is performed. If the pressure value does not meet the requirements, the telescopic cylinder continues to retract, so that the pressure roller continues to separate from the conveyor belt until the pressure value meets the requirements.

[0026] B5: After the pressure value in step B4 meets the requirements, the control box acquires the real-time rotating speed of the support wheel detected by the speed sensor, and compares the real-time speed value with the speed value preset in the control box. If the speed value meets the requirements, the belt conveyor operates normally. If the speed value does not meet the requirements, it returns to step B3 for continuous processing until the speed value meets the requirements.

[0027] From the above technical solution, the decentralized speed reduction device and the anti-piling processing method of the downward belt conveyor provided by the application can control the pressure roller to approach the support wheel through the telescopic cylinder, clamp the conveyor belt between the pressure roller and the support wheel, and form rolling contact between the conveyor belt and the pressure roller and the support wheel, so as to reduce the speed of the conveyor belt by using the pressure roller and the support wheel until the conveyor belt stops. If the speed of the conveyor belt does not decrease significantly, the pressure roller can be braked by using the brake assembly to stop rotating, and the speed of the conveyor belt can be limited by using the friction of the pressure roller until the conveyor belt stops. The application can not only realize the parking brake of the downward conveyor, but also prevent the conveyor belt from piling up. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0029] Figure 1 It is a structural schematic diagram of the present application.

[0030] Figure 2 It is a schematic diagram of the present application installed on a belt conveyor.

[0031] Figure 3 It is a control principle diagram of the present application when the downward belt conveyor is stopped.

[0032] Figure 4 It is a control principle diagram of the present application when the downward belt conveyor is started.

[0033] Figure 5 It is a schematic diagram when the conveying belt of the downward belt conveyor is stacked.

[0034] In the figure: the downward belt conveyor decentralized speed reduction device 100, the support wheel 01, the compression wheel 02, the adjusting assembly 03, the support 31, the telescopic cylinder 32, the connecting arm 33, the brake assembly 04, the brake disc 41, the guide rod 42, the protective cover 43, the rack 05, the carrier roller 06, the control box. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0036] In the description of the present application, it should be understood that the terms "upper", "middle", "outer", "inner", "lower" and the like indicate the orientation or positional relationship, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated component or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0037] Please refer to Figure 1 , Figure 2The embodiment of the present application provides a decentralized speed reduction device of a downward belt conveyor, a speed reduction mechanism and a control box; the speed reduction mechanism is symmetrically and equidistantly arranged along the conveying direction of the conveyor; the speed reduction mechanism comprises a supporting wheel 01, a pressing wheel 02 and an adjusting assembly 03; the supporting wheel 01 is symmetrically and rotatably arranged on both sides of the rack 05 of the conveyor; the supporting wheel 01 is consistent with the inclined direction of the carrier roller 06 of the conveyor, and the axis of the supporting wheel 01 is parallel to the axis of the carrier roller 06; a speed sensor is arranged in the supporting wheel 01, and the speed sensor is electrically connected with the control box through wires. The adjusting assembly 03 is symmetrically arranged on both sides of the rack 05, and the adjusting assembly 03 comprises a support 31, a telescopic cylinder 32 and a connecting arm 33; the support 31 is arranged on the side of the rack 05 of the conveyor, the connecting arm 33 is hingedly connected to the top of the support 31, the telescopic cylinder 32 is longitudinally arranged on the support 31, the telescopic cylinder 32 is electrically connected with the control box through wires, and the upper end of the telescopic cylinder 32 is rotatably connected with one end of the connecting arm 33; the telescopic cylinder 32 can adopt a hydraulic cylinder. The pressing wheel 02 is rotatably arranged at one end of the connecting arm 33 close to the supporting wheel 01, and the axis of the pressing wheel 02 is parallel to the axis of the supporting wheel 01; a first pressure sensor is arranged in the pressing wheel 02, and the first pressure sensor is electrically connected with the control box through wires. The pressing wheel 02 is controlled to move close to the supporting wheel 01 through the telescopic cylinder 32, the conveyor belt is clamped between the pressing wheel 02 and the supporting wheel 01, the conveyor belt forms rolling contact with the pressing wheel 02 and the supporting wheel 01, the speed of the conveyor belt is reduced by the pressing wheel 02 and the supporting wheel 01, and the conveyor belt stops; if the speed of the conveyor belt does not decrease obviously, the pressing wheel 02 can be braked by using the braking assembly 04, the pressing wheel 02 stops rotating, the speed of the conveyor belt is limited by the friction of the pressing wheel 02, and the conveyor belt stops; not only the parking brake of the downward conveyor can be realized, but also the stacking of the conveyor belt can be prevented.

[0038] The supporting wheel 01 is flush with the carrier roller 06, so that the conveyor belt can be flat after being supported by the supporting wheel 01 and the carrier roller 06, and the up-and-down fluctuation can be avoided.

[0039] In an embodiment, the pressing wheel 02 is provided with a braking assembly 04 for preventing the pressing wheel 02 from rotating.

[0040] Specifically, the braking assembly 04 comprises a brake disc 41 and a guide rod 42; the guide rod 42 is arranged above the pressing wheel 02, and the axis of the guide rod 42 is parallel to the axis of the pressing wheel 02; the brake disc 41 is slidably arranged on the guide rod 42, and the brake disc 41 is located on both sides of the pressing wheel 02; the brake disc 41 moves along the guide rod 42 by hydraulic driving. When the pressing wheel 02 needs to be braked, the brake disc 41 can be pushed to move close to the pressing wheel 02 by controlling the braking system, the pressing wheel 02 is clamped by the two brake discs 41, the rotation of the pressing wheel 02 is prevented, the friction between the pressing wheel 02 and the conveyor belt is formed, and the speed reduction of the conveyor belt is realized.

[0041] Specifically, a protective cover 43 is arranged above the brake disc 41.

[0042] Please refer to Figure 3 , Figure 4 The embodiment of the present application provides a kind of decentralized speed reduction anti-piling processing method of downward belt conveyor, including the processing method when belt conveyor starts, and the processing method when belt conveyor stops;

[0043] Wherein, the processing method when belt conveyor stops includes the following steps,

[0044] A1: control box obtains belt conveyor stop signal, and controls telescopic cylinder 32 to extend, so that pressure roller 02 extrudes conveying belt, conveying belt will form rolling friction with support wheel 01 and pressure roller 02, that is, conveying belt will drive support wheel 01 and pressure roller 02 to rotate synchronously, so that support wheel 01 and pressure roller 02 can be used to reduce the speed of conveying belt;

[0045] A2: control box obtains the real-time pressure value of pressure roller 02 to conveying belt detected by first pressure sensor, and compares the real-time pressure value with the pressure value preset in control box, the preset pressure value is a gradient increasing value, that is, if the previous preset value fails to realize belt conveyor braking, it will automatically jump to the next preset value, so that the real-time measured pressure value continues to compare with the next preset value;According to the load of belt conveyor, the corresponding preset pressure value is also different, the smaller the load, the smaller the corresponding preset pressure value;If the pressure value is met after comparison, next action is carried out, if the pressure value is not met, telescopic cylinder 32 continues to extend, and pressure roller 02 continues to extrude conveying belt, so as to increase the pressure of pressure roller 02 to conveying belt, until the pressure value meets the requirement;

[0046] A3: after the pressure value in step A2 meets the requirement, control box obtains the real-time speed value of support wheel 01 detected by speed sensor, and compares the real-time speed value with the speed value preset in control box, if the speed value is met, belt conveyor parking brake is completed, if the speed value is not met, control box will obtain brake assembly 04 start signal, and control brake disc 41 to brake to reduce the rotating speed of pressure roller 02;

[0047] A4: control box obtains the real-time pressure value of brake disc 41 to pressure roller 02 detected by second pressure sensor, and compares the real-time pressure value with the pressure value preset in control box, the preset pressure value is a gradient increasing value, that is, if the previous preset value fails to realize belt conveyor braking, it will automatically jump to the next preset value, so that the real-time measured pressure value continues to compare with the next preset value;If the pressure value is met, next step is carried out, if the pressure value is not met, control box continues to control hydraulic system to drive brake disc 41 to apply pressure to pressure roller 02, until the pressure value meets the requirement;

[0048] A5: After the pressure value in step A4 meets the requirements, the control box again acquires the real-time rotating speed of the supporting wheel 01 detected by the speed sensor, and compares the real-time speed value with the speed value preset in the control box. If the speed value meets the requirements, that is, the rotating speed of the supporting wheel 01 is extremely slow or 0, the parking brake of the belt conveyor is completed. If the speed value does not meet the requirements, it will return to step A1 for continuous operation until the speed value meets the requirements.

[0049] The processing method when the belt conveyor starts includes the following steps,

[0050] B1: The control box acquires the belt conveyor starting signal, and controls the hydraulic system to drive the brake disc 41 to separate from the pressure roller 02.

[0051] B2: The control box acquires the real-time pressure value of the brake disc 41 exerted on the pressure roller 02 detected by the second pressure sensor, and compares the real-time pressure value with the pressure value preset in the control box. If the pressure value meets the requirements, the next step is performed. If the pressure value does not meet the requirements, the control box continues to control the hydraulic system to drive the brake disc 41 to continue to separate from the pressure roller 02 until the pressure value meets the requirements.

[0052] B3: After the pressure value in step B2 meets the requirements, the control box controls the retractable cylinder 32 to retract.

[0053] B4: The control box acquires the real-time pressure value of the pressure roller 02 exerted on the conveying belt detected by the first pressure sensor, and compares the real-time pressure value with the pressure value preset in the control box. If the pressure value meets the requirements, the next action is performed. If the pressure value does not meet the requirements, the retractable cylinder 32 continues to retract, so that the pressure roller 02 continues to separate from the conveying belt until the pressure value meets the requirements.

[0054] B5: After the pressure value in step B4 meets the requirements, the control box controls the belt conveyor to start directly. The control box acquires the real-time rotating speed of the supporting wheel 01 detected by the speed sensor, and compares the real-time speed value with the speed value preset in the control box. If the speed value meets the requirements, the belt conveyor operates normally. If the speed value does not meet the requirements, it will return to step B3 for continuous operation until the speed value meets the requirements.

[0055] The above only discloses the preferred embodiments of the present application, and of course cannot limit the scope of the present application. Those skilled in the art can understand that the above-mentioned all or part of the processes can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A decentralized speed reduction device for a downbelt conveyor, comprising: Including speed reduction mechanism, control box; The speed reduction mechanism is arranged equidistantly along the conveying direction of the conveyor, and includes a supporting wheel, a pressure roller and an adjusting assembly; The supporting wheel is symmetrically and rotatably arranged on both sides of the frame of the conveyor, and the supporting wheel is parallel to the axis of the supporting roller and has the same inclination direction as the supporting roller; the supporting wheel is provided with a speed sensor, and the speed sensor is electrically connected to the control box through a wire; The adjusting assembly is symmetrically arranged on the side of the frame, and the adjusting assembly includes a support, a telescopic cylinder and a connecting arm; the support is arranged on both sides of the frame of the conveyor, the connecting arm is hingedly connected to the top of the support, and the telescopic cylinder is longitudinally arranged on the support and electrically connected to the control box through a wire; the upper end of the telescopic cylinder is rotatably connected to one end of the connecting arm; The pressure roller is rotatably arranged on one end of the connecting arm close to the supporting wheel, and the axis of the pressure roller is parallel to the axis of the supporting wheel; the pressure roller is provided with a first pressure sensor, and the first pressure sensor is electrically connected to the control box through a wire; The pressure roller is provided with a brake assembly for preventing the rotation of the pressure roller.

2. The decentralized speed reduction device for a downbelt conveyor of claim 1, wherein: The brake assembly includes a brake disc and a guide rod; the guide rod is arranged above the pressure roller and has an axis parallel to the axis of the pressure roller; the brake disc is slidably arranged on the guide rod and located on both sides of the pressure roller; the brake disc is driven to move along the guide rod by a hydraulic system; the brake disc is provided with a second pressure sensor, and the second pressure sensor is electrically connected to the control box through a wire.

3. The decentralized speed reduction device for a downbelt conveyor of claim 2, wherein: A protective cover is arranged above the brake disc.

4. The decentralized speed reduction device for a downbelt conveyor of claim 3, wherein: The supporting wheel is flush with the supporting roller.

5. A method for preventing stack-up of a down belt conveyor by dispersing speed reduction, using the down belt conveyor dispersing speed reduction device according to any one of claims 2 to 4, characterized by: The application relates to a processing method when a belt conveyor is started and a processing method when the belt conveyor is stopped. The processing method when the belt conveyor is stopped comprises the following steps, A1: the control box acquires a belt conveyor stop signal and controls the telescopic cylinder to extend, so that the pressure roller extrudes the conveying belt, and the conveying belt forms rolling friction with the supporting wheel and the pressure roller to reduce the speed of the conveying belt; A2: the control box acquires a real-time pressure value of the pressure roller on the conveying belt detected by the first pressure sensor, compares the real-time pressure value with a pressure value preset in the control box, and if the pressure value meets the requirement, the next step is performed, and if the pressure value does not meet the requirement, the telescopic cylinder continues to extend, and the pressure roller continues to extrude the conveying belt until the pressure value meets the requirement; A3: after the pressure value meets the requirement in step A2, the control box acquires a real-time speed value of the supporting wheel detected by the speed sensor, compares the real-time speed value with a speed value preset in the control box, and if the speed value meets the requirement, the belt conveyor stopping brake is completed, and if the speed value does not meet the requirement, the control box acquires a brake assembly starting signal and controls the brake disc to be closed to reduce the rotating speed of the pressure roller; A4: the control box acquires a real-time pressure value of the brake disc on the pressure roller detected by the second pressure sensor, compares the real-time pressure value with a pressure value preset in the control box, and if the pressure value meets the requirement, the next step is performed, and if the pressure value does not meet the requirement, the control box continues to control the hydraulic system to drive the brake disc to apply pressure to the pressure roller until the pressure value meets the requirement. A5: After the pressure value in step A4 meets the requirements, the control box again acquires the real-time speed value of the supporting wheel detected by the speed sensor, and compares the real-time speed value with the pre-set speed value in the control box. If the speed value meets the requirements, the belt conveyor parking brake is completed. If the speed value does not meet the requirements, it will return to step A1 for continuous operation until the speed value meets the requirements; The processing method when the belt conveyor starts includes the following steps, B1: The control box acquires the belt conveyor starting signal, and controls the hydraulic system to drive the brake disc to separate from the pressure wheel; B2: The control box acquires the real-time pressure value of the brake disc exerted on the pressure wheel detected by the second pressure sensor, and compares the real-time pressure value with the pre-set pressure value in the control box. If the pressure value meets the requirements, the next step is performed. If the pressure value does not meet the requirements, the control box continues to control the hydraulic system to drive the brake disc to continue to separate from the pressure wheel until the pressure value meets the requirements; B3: After the pressure value in step B2 meets the requirements, the control box controls the telescopic cylinder to retract; B4: The control box acquires the real-time pressure value of the pressure wheel exerted on the conveyor belt detected by the first pressure sensor, and compares the real-time pressure value with the pre-set pressure value in the control box. If the pressure value meets the requirements, the next action is performed. If the pressure value does not meet the requirements, the telescopic cylinder continues to retract, so that the pressure wheel continues to separate from the conveyor belt until the pressure value meets the requirements; B5: After the pressure value in step B4 meets the requirements, the control box acquires the real-time speed value of the supporting wheel detected by the speed sensor, and compares the real-time speed value with the pre-set speed value in the control box. If the speed value meets the requirements, the belt conveyor operates normally. If the speed value does not meet the requirements, it will return to step B3 for continuous operation until the speed value meets the requirements.

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