CN110803462A

CN110803462A - Belt conveyor counterweight box, counterweight system and counterweight method

Info

Publication number: CN110803462A
Application number: CN201911058815.4A
Authority: CN
Inventors: 张鹤
Original assignee: Zhongye Jingcheng Engineering Technology Co Ltd
Current assignee: MCC Capital Engineering and Research Incorporation Ltd; Zhongye Jingcheng Engineering Technology Co Ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-02-18

Abstract

The invention provides a belt conveyor counterweight box, a counterweight system and a counterweight method, wherein the belt conveyor counterweight box comprises an outer box body, an inner box body and a pressure detection device; the inner box body is used for accommodating the balancing weight, is arranged in the outer box body and can move in the vertical direction relative to the outer box body; the pressure detection device is arranged on the outer box body, is connected with the inner box body and is used for bearing the inner box body. The invention solves the technical problem that the weight of the balance weight of the belt conveyor in the prior art is difficult to accurately control.

Description

Belt conveyor counterweight box, counterweight system and counterweight method

Technical Field

The invention relates to the technical field of belt conveyor equipment, in particular to a belt conveyor counterweight box, a counterweight system and a counterweight method.

Background

The belt conveyer is a friction-driven machine for continuously conveying materials, and is applied to bulk material conveying in the fields of metallurgy and mines. During the operation of the belt conveyor, it is necessary to ensure that the belt has a sufficient tension. The weight box is used for tensioning a belt in the belt conveyor, and provides tension for the belt by using gravity. The weight box can keep the tension force stable under various working conditions, can automatically compensate the elongation of the belt, and is a tensioning device widely applied at present.

The weight box in the prior art is usually an open iron box, and the purpose of weight balancing is realized by bulk balancing weights; in the process of counterweight loading, loading is carried out according to the designed number of the counterweight blocks. However, when the counterweight is loaded on site, the installer often forgets the number of the loaded counterweight blocks, and the counterweight blocks transported to the site are easy to be out of design; in some cases, the installer will use a weight such as stone to perform the loading. This often results in a weight load that does not match the design weight. When the loading capacity is insufficient, the tension force of the belt conveyor is insufficient, and the belt slips; when the loading is excessive, the tensioning force can be overlarge, the stress of the equipment is overlarge, the service life of the equipment is influenced, and the risk of directly causing installation accidents exists in the overlarge counterweight loading.

Disclosure of Invention

The invention aims to provide a counter weight box, a counter weight system and a counter weight method of a belt conveyor, so as to solve the technical problem that the weight of a counter weight of the belt conveyor in the prior art is difficult to accurately control.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a belt conveyor counterweight box, comprising: the pressure detection device comprises an outer box body, an inner box body and a pressure detection device; the inner box body is used for accommodating a balancing weight, is arranged in the outer box body and can move in the vertical direction relative to the outer box body; the pressure detection device is arranged on the outer box body, is connected with the inner box body and is used for bearing the inner box body.

In a preferred embodiment, the weight box includes a plurality of the pressure detection devices, the plurality of the pressure detection devices include a first pressure detection device and a second pressure detection device, and the first pressure detection device and the second pressure detection device are respectively disposed at two ends of the bottom wall of the inner box body.

In a preferred embodiment, the inner case has a rectangular parallelepiped shape; the plurality of pressure detection devices comprise 2 first pressure detection devices and 2 second pressure detection devices, and the 2 first pressure detection devices and the 2 second pressure detection devices are respectively arranged at the corner of the bottom wall of the inner box body.

In a preferred embodiment, the pressure detection means comprises a pressure sensor.

In a preferred embodiment, the weight box comprises a display device and a controller connected with the pressure sensor, and the controller is connected with the display device and used for controlling the display device to display the value detected by the pressure sensor.

In a preferred embodiment, the weight box comprises an alarm device and a controller connected with the pressure sensor, wherein the controller is connected with the alarm device and is used for controlling the alarm device to give an alarm when the value detected by the pressure sensor exceeds an overweight critical value.

In a preferred embodiment, the alarm device comprises a buzzer.

In a preferred embodiment, the weight box includes a guide rail mounted to the outer case, and the inner case is connected to the guide rail.

The invention provides a belt conveyor counterweight system, comprising: the counterweight box is connected with a roller in the belt conveyor and can pull the roller to translate.

The invention provides a counterweight method of a belt conveyor, which adopts the counterweight box of the belt conveyor; the method comprises the following steps:

step S10, loading a balancing weight to the inner box body;

step S20, comparing the sum of the values detected by the pressure detecting devices with a design value of the counterweight, and stopping the loading when the sum is greater than or equal to the design value of the counterweight;

step S30, comparing the difference between the values detected by the pressure detecting devices with a deviation threshold value, so that the difference is smaller than or equal to the deviation threshold value.

The invention has the characteristics and advantages that:

when the counterweight box of the belt conveyor is used, the outer box body is suspended and connected with the roller in the belt conveyor; the balancing weight is placed in interior box, and the box moves down in outer box in the gravity drive of balancing weight, and the gravity action of interior box and balancing weight acts on pressure measurement device, and pressure measurement device can measure the weight of the loaded balancing weight to in the counter weight according to the design loads, improved the degree of accuracy of the weight of counter weight.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a belt conveyor counterweight box provided by the present invention;

FIG. 2 is a schematic distribution diagram of a pressure detecting device in a counterweight box of a belt conveyor provided by the invention;

FIG. 3 is a schematic electrical connection diagram of the belt conveyor counterweight housing shown in FIG. 1;

FIG. 4 is a schematic structural diagram of a first perspective view of a belt conveyor counterweight system according to the present invention;

FIG. 5 is a schematic structural diagram of a second perspective view of a belt conveyor counterweight system according to the present invention;

fig. 6 is a schematic view of a counterweight method of a belt conveyor provided by the invention.

The reference numbers illustrate:

100. a weight box; 110. a balancing weight;

10. an outer case; 20. an inner box body;

30. a pressure detection device; 31. a first pressure detection device; 32. a second pressure detecting device; 40. a pressure sensor;

50. a display device; 51. a display panel;

60. an alarm device; 61. a buzzer;

71. a guide rail; 72. a controller; 73. a PLC controller; 74. a power source;

200. a drum; 210. a rotating shaft of the drum; 300. a belt; 400. a guide rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

The present invention provides a belt conveyor counterweight box, as shown in fig. 1, the counterweight box 100 comprising: an outer box body 10, an inner box body 20 and a pressure detection device 30; the inner box 20 is used for accommodating the counterweight block 110, and the inner box 20 is arranged in the outer box 10 and can move in the vertical direction relative to the outer box 10; the pressure detection device 30 is mounted on the outer case 10, connected to the inner case 20, and used for carrying the inner case 20.

When the weight box 100 is used, the outer case 10 is suspended and connected to the drum 200 of the belt conveyor; the balancing weight 110 is placed in the inner box body 20, the gravity of the balancing weight 110 drives the inner box body 20 to move downwards in the outer box body 10, the gravity of the inner box body 20 and the balancing weight 110 acts on the pressure detection device 30, the weight of the loaded balancing weight can be measured by the pressure detection device 30, so that the balancing weight can be loaded according to the designed balancing weight, and the accuracy of the weight of the balancing weight is improved.

The total weight of counter weight can produce great influence to belt conveyor operation's stability, and the inventor has also found that, when the focus of weight box and balancing weight thereof is partial to one side, belt conveyor operation's stability also can receive great interference, appears the belt off tracking easily.

In order to alleviate the above problems, the inventor further improves the belt conveyor counterweight box: the weight box 100 includes a plurality of pressure detecting devices 30, and the plurality of pressure detecting devices 30 include a first pressure detecting device 31 and a second pressure detecting device 32, as shown in fig. 1, the first pressure detecting device 31 and the second pressure detecting device 32 are respectively disposed at two ends of the bottom wall of the inner box 20. Referring to fig. 4, both ends of the bottom wall of the inner casing 20 are distributed along the axial direction of the drum 200, and both ends of the outer casing 10 are respectively and correspondingly connected to both ends of the rotating shaft 210 of the drum. When the distribution of the weight blocks in the weight box is deviated to one end, the stress on the two ends of the drum 200 is unbalanced. The first pressure detecting device 31 and the second pressure detecting device 32 measure the stress at both ends of the inner case 20, respectively, so as to regulate the stress at both ends of the drum 200.

When loading is performed, by keeping the measured value of the first pressure detecting device 31 and the measured value of the second pressure detecting device 32 consistent, the clump weights 110 in the weight box 100 can be distributed more uniformly, so that the stress at the two ends of the roller 200 can be kept balanced.

When the belt conveyor runs and a fault such as deviation of the belt 300 occurs, the total weight of the counterweight and the distribution of the counterweight in the counterweight box 100 can be measured by the first pressure detection device 31 and the second pressure detection device 32, so that the relation between the fault and the counterweight can be known and summarized, and the fault can be solved. For example: when the belt 300 deviates in a direction in which the first pressure detection device 31 points to the second pressure detection device 32, the distribution position of the counterweight in the weight box 100 may be adjusted to decrease the measurement value of the first pressure detection device 31 and/or increase the measurement value of the second pressure detection device 32, so as to achieve deviation correction.

Further, the inner box 20 is rectangular; the plurality of pressure detection devices 30 include 2 first pressure detection devices 31 and 2 second pressure detection devices 32, as shown in fig. 2, the 2 first pressure detection devices 31 and the 2 second pressure detection devices 32 are respectively disposed at the corners of the bottom wall of the inner box 20, so as to more accurately measure the weight at the four corners of the inner box 20, facilitate adjustment of the distribution of the weights 110 in the inner box 20, and improve the running stability of the belt conveyor.

The pressure detection device 30 may be in various forms, and may be mechanical or electronic. To facilitate reading and recording of the measured values, the pressure detection device 30 employs a pressure sensor 40.

In one embodiment of the present invention, the weight box 100 includes a display device 50 and a controller 72 connected to the pressure sensor 40, wherein the controller 72 is connected to the display device 50 for controlling the display device 50 to display the value detected by the pressure sensor 40, so as to facilitate the field installer to know the loading amount in real time. When a plurality of pressure sensors 40 are provided in the weight box 100, the display device 50 simultaneously displays the detection values of the respective pressure sensors 40 and the sum of the detection values under the control of the controller 72. Preferably, the display device 50 employs a display panel 51, and the display panel 51 is mounted on an outer sidewall of the outer case 10.

In one embodiment of the present invention, the weight box 100 includes an alarm device 60 and a controller 72 connected to the pressure sensor 40, wherein the controller 72 is connected to the alarm device 60 for controlling the alarm device 60 to issue an alarm when the value detected by the pressure sensor 40 exceeds an overweight threshold.

Specifically, the controller 72 includes an input through which an overweight threshold may be set. During loading, the controller 72 sums the detection values of the respective pressure sensors 40 and compares the sum of the detection values with the overweight threshold value. When the sum of the detection values is greater than the overweight threshold, the controller 72 controls the alarm device 60 to issue an alarm. Preferably, the alarm device 60 comprises a buzzer 61.

Further, the controller 72 employs a PLC controller 73. Referring to fig. 1 and 3, the weight box 100 further includes a power supply 74, and the power supply 74 and the PLC controller 73 are both mounted on the bottom wall of the outer box 10 and located below the inner box 20; the power supply 74 is electrically connected to the PLC controller 73, the display panel 51, and the buzzer 61.

In one embodiment of the present invention, the weight box 100 includes a rail 71 attached to the outer case 10, and the inner case 20 is connected to the rail 71. As shown in fig. 1, the guide rail 71 is fixed to an inner sidewall of the outer case 10 in a vertical direction. The guide rail 71 can guide the inner box 20 to move smoothly and vertically relative to the outer box 10, which is beneficial for the pressure detection device 30 to measure the weight of the inner box 20 and the weight block 110 therein.

Example two

The present invention provides a belt conveyor counterweight system, as shown in fig. 4 and 5, comprising: the counterweight block 110 and the weight box 100 of the belt conveyor are connected, and the weight box 100 is connected with the roller 200 of the belt conveyor and can pull the roller 200 to translate.

When the weight box 100 includes the first pressure detecting device 31 and the second pressure detecting device 32, the first pressure detecting device 31 and the second pressure detecting device 32 are distributed along the axial direction of the drum 200, and both ends of the outer case 10 are correspondingly connected to both ends of the rotation shaft 210 of the drum, respectively. When the distribution of the weight 110 in the weight box 100 is biased to one end, the stress on the two ends of the drum 200 is unbalanced. The first pressure detecting device 31 and the second pressure detecting device 32 measure the stress at both ends of the inner case 20, respectively, so as to regulate the stress at both ends of the drum 200.

Further, the counterweight system comprises a guide rod 400, the roller 200 is slidably connected to the guide rod 400, and the guide rod 400 can guide the movement of the roller 200, so that the roller 200 can move stably under the tension of the counterweight box 100, and the stability of the tension of the belt 300 is guaranteed.

The belt conveyor counterweight system is not limited to be applied to a belt conveyor, and can also be applied to other equipment needing counterweight loading.

EXAMPLE III

The invention provides a counterweight method of a belt conveyor, which adopts the counterweight box 100 of the belt conveyor, and as shown in fig. 6, the counterweight method comprises the following steps:

step S10, loading the weight block 110 to the inner box 20;

step S20, comparing the sum of the values detected by the pressure detecting devices 30 with the design value of the counterweight, and stopping the loading when the sum is greater than or equal to the design value of the counterweight;

in step S30, the difference between the values detected by the pressure detecting devices 30 is compared with the deviation threshold value, so that the difference is smaller than or equal to the deviation threshold value.

The counterweight method can avoid excessive loading and ensure the accuracy of the total loading weight; and moreover, the distribution condition of the balance weight is effectively controlled, so that the balance weight is distributed more uniformly, the faults of deviation of a correction belt and the like are reduced, and the belt conveyor is ensured to operate stably. Specifically, the deviation threshold value is (average value of each pressure detection device × 5%).

The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims

1. A belt conveyor counterweight box, comprising: the pressure detection device comprises an outer box body, an inner box body and a pressure detection device; the inner box body is used for accommodating a balancing weight, is arranged in the outer box body and can move in the vertical direction relative to the outer box body; the pressure detection device is arranged on the outer box body, is connected with the inner box body and is used for bearing the inner box body.

2. The belt conveyor counterweight box according to claim 1, wherein said counterweight box comprises a plurality of said pressure detecting means, and a plurality of said pressure detecting means comprises a first pressure detecting means and a second pressure detecting means, and said first pressure detecting means and said second pressure detecting means are respectively provided at both ends of a bottom wall of said inner box body.

3. The belt conveyor counterbalance box of claim 2, wherein the inner box body is rectangular parallelepiped shaped; the plurality of pressure detection devices comprise 2 first pressure detection devices and 2 second pressure detection devices, and the 2 first pressure detection devices and the 2 second pressure detection devices are respectively arranged at the corner of the bottom wall of the inner box body.

4. A belt conveyor counterweight according to any one of claims 1 to 3, in which said pressure detection means comprise a pressure sensor.

5. The belt conveyor counterweight box of claim 4 and comprising a display device and a controller connected to said pressure sensor, said controller being connected to said display device for controlling said display device to display the value detected by said pressure sensor.

6. Belt conveyor weight box according to claim 4, characterized in that the weight box comprises an alarm device and a controller connected to the pressure sensor, which controller is connected to the alarm device for controlling the alarm device to give an alarm when the value detected by the pressure sensor exceeds an overweight threshold.

7. The belt conveyor counterbalance box of claim 6, wherein the warning device comprises a buzzer.

8. The belt conveyor weigh bin of claim 1, wherein the weight bin includes a rail mounted to the outer box, the inner box being connected to the rail.

9. A belt conveyor counterweight system, comprising: a counterweight and a belt conveyor counterweight box according to any one of claims 1 to 8, said counterweight box being connected to a roller in a belt conveyor, able to pull said roller in translation.

10. A method of weighting a belt conveyor, characterized by using the belt conveyor weighting box according to claim 2 or 3; the method comprises the following steps:

step S10, loading a balancing weight to the inner box body;