CN111289569A - Cutter wear monitoring device for pavement crushing and method thereof - Google Patents
Cutter wear monitoring device for pavement crushing and method thereof Download PDFInfo
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- CN111289569A CN111289569A CN202010219369.7A CN202010219369A CN111289569A CN 111289569 A CN111289569 A CN 111289569A CN 202010219369 A CN202010219369 A CN 202010219369A CN 111289569 A CN111289569 A CN 111289569A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 10
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 238000005299 abrasion Methods 0.000 claims abstract description 7
- 230000001960 triggered effect Effects 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 12
- 230000006698 induction Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000011897 real-time detection Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/12—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
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- Chemical & Material Sciences (AREA)
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- Mining & Mineral Resources (AREA)
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a cutter wear monitoring device for pavement crushing, which is characterized in that: includes a non-contact detection sensor; the non-contact detection sensors are provided with a plurality of cutters, are arranged on the periphery of the cutters and keep a certain distance, and are used for sensing the tips of the cutters; the distance between the non-contact detection sensor and the cutter is as follows: a pulse is triggered only when the tip of the tool is close to the non-contact detection sensor. The non-contact detection sensor is arranged on the roller housing, and signals of the sensor are subjected to subsequent processing, so that the abrasion of the cutter is detected in real time.
Description
Technical Field
The invention relates to the field of maintenance of pavement crushers, in particular to a device and a method for monitoring abrasion of a cutter for pavement crushing.
Background
The crusher used for crushing road surface is a cylindrical roller with many cutters or bits and covered by a cover. In the working process, cutters on the roller are easy to wear, so that some cutters need to be replaced at any time according to the wear condition.
However, when the crusher works, the roller is in a high-speed rotating state, the abrasion state of the cutter cannot be acquired in time, and the crusher can be stopped for inspection only when the crusher works abnormally or generates abnormal sound. This seriously affects the working efficiency. That is, in the prior art, no effective on-line inspection means is available, and all the inspection means are manual inspection means. Maintaining the continued operation of one of the tools that has been damaged often results in accelerated damage to the other tool.
Disclosure of Invention
The invention aims to overcome the defects, and realizes real-time detection of the abrasion of the cutter by arranging a set of non-contact detection sensors on the roller housing and carrying out subsequent processing on signals of the sensors.
The invention provides a cutter wear monitoring device for pavement crushing, which is characterized in that: includes a non-contact detection sensor;
the non-contact detection sensors are provided with a plurality of cutters, are arranged on the periphery of the cutters and keep a certain distance, and are used for sensing the tips of the cutters;
the distance between the non-contact detection sensor and the cutter is as follows: a pulse is triggered only when the tip of the tool is close to the non-contact detection sensor.
Further, the invention provides a road surface crushing cutter wear monitoring device, which is characterized in that: the non-contact detection sensor is axially or radially mounted on the crushing shell. Typically the sensors themselves are mounted radially, but if there are multiple sensors, they are arranged axially.
Further, the invention provides a road surface crushing cutter wear monitoring device, which is characterized in that: a plurality of mounting positions are arranged on the crushing cover shell;
the non-contact detection sensor is detachably mounted in the mounting position.
Further, the invention provides a road surface crushing cutter wear monitoring device, which is characterized in that: the mounting position is provided with an adjustable structure;
the non-contact detection sensor can be arranged in the mounting position with the distance between the non-contact detection sensor and the cutter adjustable.
Further, the invention provides a road surface crushing cutter wear monitoring device, which is characterized in that: the sensing surface of the non-contact detection sensor retracts a certain distance from the inner surface of the cover shell, so that the proximity switch is prevented from being hit by broken stones in the cover shell.
Further, the invention provides a road surface crushing cutter wear monitoring device, which is characterized in that: a gap is formed between the induction head of the non-contact detection sensor and the inner diameter of the installation position, so that the induction effect of the housing on the proximity switch is avoided.
In addition, the invention also provides a method for monitoring the wear of the cutter for road surface crushing, which is applied to the device for monitoring the wear of the cutter for road surface crushing and is characterized in that:
judging the tip loss condition of a cutter corresponding to the current non-contact detection sensor according to a rated value by counting the pulse number of each non-contact detection sensor in a specified time;
when the statistical quantity is equal to the rated value, judging that the cutter is not seriously worn;
and when the statistical quantity is smaller than the rated value, judging that the current tool is seriously worn.
Further, another method for monitoring wear of a road surface crushing cutter according to the present invention is applied to the apparatus for monitoring wear of a road surface crushing cutter, and is characterized in that:
counting the pulse number of N +1 circles of each non-contact detection sensor, and comparing the pulse number of the N +1 circles with the pulse number of the N circles to judge the tip loss condition of the cutter corresponding to the current non-contact detection sensor;
when the pulse number of N +1 circles is equal to the pulse number of N circles, judging that the cutter is not seriously abraded;
and when the pulse number of the N +1 circles is less than the pulse number of the N circles, judging that the current cutter is seriously worn.
In addition, the invention also provides a system for monitoring the wear of the cutter for road surface crushing, which is characterized in that: the device comprises a sensor unit and a central control unit;
the sensor unit acquires a pulse signal and sends the pulse signal to the central control unit;
the central control unit comprises a data receiving and counting module, a comparison module and an alarm module;
the data receiving and counting module receives the pulse signals and counts the number of pulses in the Nth specified time;
the comparison module compares the pulse number with the rated value to obtain the degree of tool wear;
when the pulse number is equal to the rated value, judging that the cutter is not seriously worn, and continuously counting the pulse number in the (N + 1) th designated time;
and when the pulse number is smaller than the rated value, judging that the current cutter is seriously worn, and sending an alarm command to an alarm module.
Further, the invention also provides a system for monitoring the wear of the cutters for road surface crushing, which is characterized in that: the device comprises a sensor unit and a central control unit;
the sensor unit acquires a pulse signal and sends the pulse signal to the central control unit;
the central control unit comprises a data receiving and counting module, a comparison module and an alarm module;
the data receiving and counting module receives the pulse signals, stores and counts the pulse number in the Nth specified time period and the pulse number in the (N + 1) th specified time period;
the comparison module compares the pulse number in the Nth specified time period with the pulse number in the (N + 1) th specified time period to obtain the degree of tool wear;
when the pulse number in the Nth specified time period is equal to the pulse number in the (N + 1) th specified time period, judging that the cutter is not seriously worn, and continuously counting the pulse number in the next specified time period;
and when the pulse number in the Nth specified time period is greater than the pulse number in the (N + 1) th specified time period, judging that the current cutter is seriously worn, and sending an alarm command to an alarm module.
Effects and effects of the invention
The invention realizes real-time detection of the abrasion of the cutter through a set of on-line detection device. The wear signal can be automatically given out under the condition that the individual cutter is worn, and the specific position of the worn cutter is given out, so that the cutter can be replaced in time, and the cutter is prevented from being further damaged.
Drawings
Fig. 1 is a schematic installation diagram of an online detection device provided in this embodiment;
fig. 2 is a schematic view of an installation structure of the proximity switch provided in the present embodiment;
fig. 3 is a schematic flow chart of the method for monitoring wear of the road surface breaking cutter according to the embodiment.
Detailed Description
As shown in fig. 1, in this embodiment, a set of non-contact detection sensors is installed on a roller housing, and signals of the sensors are subjected to subsequent processing, so as to realize real-time detection of wear of a cutter.
Specifically, a row of ferromagnetic proximity switches 300 are axially arranged on the crushing case 100, and according to the difference of the sensing ranges of the proximity switches of different models, the proximity switches and the cutters are arranged in such a way that a pulse is generated only when the bullet 210 of each cutter 200 passes through the proximity switch 300, and when the bullet is worn down or is worn out, the pulse condition does not occur. The specific inductor can be selected from an inductive proximity switch, a capacitive proximity switch or a Hall proximity switch, and the initial distance between the sensing surface and the bullet head can be 5-30 mm. Whether the bullet breaks or not can be judged by counting the number of the pulses. Generally, the number of proximity switches in a row is such as to cover the sensing distance of all the tools on the roller.
Structurally, an array of proximity switches 300 is mounted on the crushing bin casing 100. After the installation, the proximity switches 300 are fixed on the housing (the installation process may be to open holes on the existing housing of the crushing bin and then to install the proximity switches thereon by welding, bonding, etc., if the proximity switches can be adjusted at any time, the proximity switches can be opened holes on the existing housing of the crushing bin and then to install the switch seat structure, which is any form that can achieve the height adjustment of the proximity switches and the effect of fixing the adjusted positions, such as an internal thread type, a clip type, a claw type, a spring type, etc.).
In this embodiment, as shown in fig. 2, the proximity switch sensing surface should be retracted from the cover surface by more than 3 mm to prevent the cover from being hit by the broken stones, and the gap between the proximity switch sensing head and the cover opening should be greater than 4 mm to prevent the cover from generating a sensing effect on the proximity switch.
The specific working principle is as follows: during the rotation of the roller, the tips of the cutters pass by the proximity switch in sequence. When the tip of the cutter made of metal material approaches the induction head, the proximity switch can sense and output an electric pulse signal through a cable, and the number of the tip of the cutter passing through each circle can be judged by counting the pulse. The condition for generating the electric pulse signal is that the distance between the two is close enough, if the tool tip is worn seriously, the distance between the two becomes far, and the distance is not enough to lead the proximity switch to sense the passing of the tool tip, the counting number of the pulse is one less, and therefore, the existence of the tool tip abrasion or damage can be judged.
As shown in fig. 3, the specific process is as follows:
s1, when equipment is started and starts to work, a controller instructs each proximity switch to start counting (the controller and the proximity switches are electrically connected in a communication wire or a wifi transceiver and the like), and the counting condition is fed back to the controller;
s2, counting the pulse number of each proximity switch in a specified time (the specified time is calculated according to the power of equipment, the diameter of a cutter and the like, the obtained time required by the cutter piece to rotate for one circle is obtained, an origin point trigger induction point is set in each circle, and after the origin point is triggered, the number of the pulses from the beginning is counted, and judging the tip loss condition of the cutter corresponding to the current non-contact detection sensor according to a rated value (the rated value refers to the number of bullet heads of the specific cutter piece);
when the statistical quantity is equal to the rated value, judging that the cutter is not seriously worn;
when the statistical number is smaller than the rated value, the current cutter is judged to be seriously worn, and the controller sends an alarm instruction to the alarm, so that the staff at the front end or the working end can find the condition that the cutter needs to be replaced.
Or
S1, when equipment is started and starts to work, a controller instructs each proximity switch to start counting (the controller and the proximity switches are electrically connected in a communication wire or a wifi transceiver and the like), and the counting condition is fed back to the controller;
s2, counting the pulse number of each proximity switch in N +1 circles, and comparing the pulse number of the N +1 circles with the pulse number of the N circles to judge the tip loss condition of the cutter corresponding to the current non-contact detection sensor;
when the pulse number of N +1 circles is equal to the pulse number of N circles, judging that the cutter is not seriously abraded;
when the number of pulses of N +1 circles is smaller than that of pulses of N circles, the current cutter is judged to be seriously worn, and the controller sends an alarm instruction to the alarm, so that a worker at the front end or the working end can find the condition that the cutter needs to be replaced.
Claims (10)
1. The utility model provides a road surface is cutter wearing and tearing monitoring device for breakage which characterized in that: includes a non-contact detection sensor;
the non-contact detection sensors are provided with a plurality of cutters, are arranged on the periphery of the cutters and keep a certain distance, and are used for sensing the tips of the cutters;
the distance between the non-contact detection sensor and the cutter is as follows: a pulse is triggered only when the tip of the tool is close to the non-contact detection sensor.
2. The road surface crushing cutter wear monitoring device according to claim 1, wherein:
the non-contact detection sensor is axially or radially arranged on the crushing cover shell.
3. The road surface crushing cutter wear monitoring device according to claim 2, wherein:
a plurality of mounting positions are arranged on the crushing cover shell;
the non-contact detection sensor is detachably mounted in the mounting position.
4. A road surface crushing cutter wear monitoring device according to claim 3, characterized in that:
the mounting position is provided with an adjustable structure;
the non-contact detection sensor can be adjusted to be in distance with the cutter and is arranged in the installation position.
5. A road surface crushing cutter wear monitoring device according to claim 3, characterized in that:
the sensing surface of the non-contact detection sensor is retracted from the inner surface of the housing by a certain distance.
6. A road surface crushing cutter wear monitoring device according to claim 3, characterized in that:
a gap is formed between the induction head of the non-contact detection sensor and the inner diameter of the mounting position.
7. A method for monitoring wear of a road surface crushing cutter, which is applied to the apparatus for monitoring wear of a road surface crushing cutter according to claim 1, characterized in that:
judging the tip loss condition of a cutter corresponding to the current non-contact detection sensor according to a rated value by counting the pulse number of each non-contact detection sensor in a specified time;
when the statistical quantity is equal to the rated value, judging that the cutter is not seriously worn;
and when the statistical quantity is smaller than the rated value, judging that the current tool is seriously worn.
8. A method for monitoring wear of a road surface crushing cutter, which is applied to the apparatus for monitoring wear of a road surface crushing cutter according to claim 1, characterized in that:
counting the pulse number of N +1 circles of each non-contact detection sensor, and comparing the pulse number of the N +1 circles with the pulse number of the N circles to judge the tip loss condition of the cutter corresponding to the current non-contact detection sensor;
when the pulse number of N +1 circles is equal to the pulse number of N circles, judging that the cutter is not seriously abraded;
and when the pulse number of the N +1 circles is less than the pulse number of the N circles, judging that the current cutter is seriously worn.
9. The utility model provides a road surface is cutter wearing and tearing monitored control system for breakage which characterized in that: the device comprises a sensor unit and a central control unit;
the sensor unit acquires a pulse signal and sends the pulse signal to the central control unit;
the central control unit comprises a data receiving and counting module, a comparison module and an alarm module;
the data receiving and counting module receives the pulse signals and counts the number of pulses in the Nth specified time;
the comparison module compares the pulse number with the rated value to obtain the degree of tool wear;
when the pulse number is equal to the rated value, judging that the cutter is not seriously worn, and continuously counting the pulse number in the (N + 1) th designated time;
and when the pulse number is smaller than the rated value, judging that the current cutter is seriously worn, and sending an alarm command to an alarm module.
10. The utility model provides a road surface is cutter wearing and tearing monitored control system for breakage which characterized in that: the device comprises a sensor unit and a central control unit;
the sensor unit acquires a pulse signal and sends the pulse signal to the central control unit;
the central control unit comprises a data receiving and counting module, a comparison module and an alarm module;
the data receiving and counting module receives the pulse signals, stores and counts the pulse number in the Nth specified time period and the pulse number in the (N + 1) th specified time period;
the comparison module is used for comparing the size relationship between the pulse number in the Nth specified time period and the pulse number in the (N + 1) th specified time period to obtain the degree of tool abrasion;
when the pulse number in the Nth specified time period is equal to the pulse number in the (N + 1) th specified time period, judging that the cutter is not seriously worn, and continuously counting the pulse number in the next specified time period;
and when the pulse number in the Nth specified time period is greater than the pulse number in the (N + 1) th specified time period, judging that the current cutter is seriously worn, and sending an alarm command to an alarm module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219369.7A CN111289569A (en) | 2020-03-25 | 2020-03-25 | Cutter wear monitoring device for pavement crushing and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219369.7A CN111289569A (en) | 2020-03-25 | 2020-03-25 | Cutter wear monitoring device for pavement crushing and method thereof |
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| CN111289569A true CN111289569A (en) | 2020-06-16 |
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| CN202010219369.7A Pending CN111289569A (en) | 2020-03-25 | 2020-03-25 | Cutter wear monitoring device for pavement crushing and method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906692A (en) * | 2020-07-28 | 2020-11-10 | 惠科股份有限公司 | Edge grinding machine, method and device for measuring allowance of grinding material of edge grinding machine and storage medium |
| CN111948970A (en) * | 2020-08-26 | 2020-11-17 | 格力电器（武汉）有限公司 | A method and system for monitoring tool usage times |
| CN113263538A (en) * | 2021-05-07 | 2021-08-17 | 珠海格力新元电子有限公司 | Workpiece striking device and jacketing machine |
| CN114778603A (en) * | 2022-03-01 | 2022-07-22 | 河钢乐亭钢铁有限公司 | Monitoring system and method for steel wire rope of casting crane |
| CN116358850A (en) * | 2023-03-23 | 2023-06-30 | 中南大学 | A method for detecting the number and distribution of broken teeth of tunnel boring machine insert hob based on wear detection device |
| CN118847298A (en) * | 2023-04-28 | 2024-10-29 | 宁德时代新能源科技股份有限公司 | Cutter, material crushing equipment and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111906692A (en) * | 2020-07-28 | 2020-11-10 | 惠科股份有限公司 | Edge grinding machine, method and device for measuring allowance of grinding material of edge grinding machine and storage medium |
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| CN114778603A (en) * | 2022-03-01 | 2022-07-22 | 河钢乐亭钢铁有限公司 | Monitoring system and method for steel wire rope of casting crane |
| CN116358850A (en) * | 2023-03-23 | 2023-06-30 | 中南大学 | A method for detecting the number and distribution of broken teeth of tunnel boring machine insert hob based on wear detection device |
| CN118847298A (en) * | 2023-04-28 | 2024-10-29 | 宁德时代新能源科技股份有限公司 | Cutter, material crushing equipment and control method thereof |
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Application publication date: 20200616 |