CN112473198A - Multiple overload protection device for mud scraper - Google Patents
Multiple overload protection device for mud scraper Download PDFInfo
- Publication number
- CN112473198A CN112473198A CN202011280983.0A CN202011280983A CN112473198A CN 112473198 A CN112473198 A CN 112473198A CN 202011280983 A CN202011280983 A CN 202011280983A CN 112473198 A CN112473198 A CN 112473198A
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- CN
- China
- Prior art keywords
- mud scraper
- worm
- motor
- speed reducer
- central shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 29
- 238000010008 shearing Methods 0.000 claims abstract description 7
- 230000001012 protector Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Elevator Door Apparatuses (AREA)
Abstract
The invention discloses a multiple overload protection device for a mud scraper, wherein a motor is connected with a central shaft of the mud scraper through a speed reducer, a worm gear assembly connected with an output shaft of the motor is arranged in the speed reducer, a worm matched with the worm gear assembly is arranged in the speed reducer, the worm is of a hollow structure, the central shaft of the mud scraper extends into the worm, the top of the central shaft of the mud scraper and the top of the worm extend out of the speed reducer, and the top of the central shaft of the mud scraper and the top of the worm are connected through a shear pin; the sensor support is connected with the outer wall of the speed reducer through the tension sensor. According to the invention, the rotating speed of the mud scraper is judged by using the tension sensor, when the rotating speed is larger, the tension is larger, and the tension exceeds a set threshold, the motor is turned off, meanwhile, the shearing pin is added into the power transmission ring, the shearing pin can bear the maximum torsion and is broken, the power transmission between the motor and the mud scraper is cut off, and the motor is protected.
Description
Technical Field
The invention relates to the field of overload protection of mud scrapers, in particular to a multiple overload protection device for a mud scraper.
Background
A mud scraper is a machine for cleaning mud from a river channel, is used in a circular sedimentation tank with larger diameter in municipal sewage treatment plants, water supply plants and industrial wastewater treatment, and is used for removing the mud settled at the bottom of the tank and skimming scum on the surface of the tank.
When the scraper load increases, the motor load increases, and when the scraper load was too big, the scraper rotational speed could not promote, and the scraper rotational speed did not match with speed reducer output rotational speed, and speed reducer or motor damaged because the load is too big.
Disclosure of Invention
The invention aims to provide a multiple overload protection device for a mud scraper.
The invention has the innovation point that the rotating speed of the mud scraper is judged by using the tension sensor, when the rotating speed is higher and the tension is larger, the tension exceeds a set threshold value, the motor is closed, the shearing pin is added into the power transmission ring, the shearing pin can bear the maximum torsion and is broken, the power transmission between the motor and the mud scraper is cut off, and the motor is protected.
In order to achieve the purpose, the technical scheme of the invention is as follows: a multiple overload protection device for a mud scraper comprises a motor, wherein the motor is connected with a central shaft of the mud scraper through a speed reducer, a worm gear assembly connected with an output shaft of the motor is arranged in the speed reducer, a worm matched with the worm gear assembly is arranged in the speed reducer, the worm is of a hollow structure, the central shaft of the mud scraper extends into the worm, the top of the central shaft of the mud scraper and the top of the worm extend out of the speed reducer, and the top of the central shaft of the mud scraper and the top of the worm are connected through a shear pin; the sensor support is connected with the outer wall of the speed reducer through a tension sensor.
Furthermore, a current overload protector is arranged on the motor. The output torque of the motor is increased, the current is increased, and when the current exceeds the threshold value of the current overload protector, the current overload protector is started, and the motor is closed.
Furthermore, the speed reducer is provided with a cap for covering the top of the central shaft of the mud scraper and the extending part of the top of the worm, and the cap is connected with the box body of the speed reducer through screws. When the shear pin breaks, it may cause the broken debris to splash, creating a safety hazard if the cap is not present. Meanwhile, if the shear pin is exposed outside and cannot be protected, the shear pin is deformed and corroded, and the like, so that the whole machine can be influenced. The cap is fixed by screws, so that the shear pin is convenient to use, replace and check.
The invention has the beneficial effects that:
1. according to the invention, the rotating speed of the mud scraper is judged by using the tension sensor, when the rotating speed is larger, the tension is larger, and the tension exceeds a set threshold, the motor is turned off, meanwhile, the shearing pin is added into the power transmission ring, the shearing pin can bear the maximum torsion and is broken, the power transmission between the motor and the mud scraper is cut off, and the motor is protected.
Drawings
Fig. 1 is a schematic structural diagram of the prior art of the present invention.
Fig. 2 is a schematic structural diagram of a side surface of the tension sensor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example 1: as shown in fig. 1 and 2, the multiple overload protection device for the mud scraper comprises a motor 1, wherein the motor 1 is connected with a mud scraper central shaft 3 through a speed reducer 2, a worm gear assembly 5 connected with a motor output shaft 4 is arranged in the speed reducer 2, a worm 6 matched with the worm gear assembly 5 is arranged in the speed reducer 2, the worm 6 is of a hollow structure, the mud scraper central shaft 3 extends into the worm 6, the top of the mud scraper central shaft 3 and the top of the worm 6 extend out of the speed reducer 2, and the top of the mud scraper central shaft 3 and the top of the worm 6 are connected through a shear pin 7; a sensor bottom plate 8 is fixedly arranged below the speed reducer 2, a sensor support 9 is arranged on the sensor bottom plate 8, and the sensor support 9 is connected with the outer wall of the speed reducer 2 through a tension sensor 10; the motor 1 is provided with a current overload protector 11, the speed reducer 2 is provided with a cap 12 for covering the top of the central shaft 3 of the mud scraper and the extending part of the top of the worm 6, and the cap 12 is connected with the box body of the speed reducer 2 through screws.
The working principle is as follows: when the load of the mud scraper is increased, the motor outputs torque, the rotating speed of the mud scraper is increased, the centrifugal force applied to the motor is increased, the tension of the tension sensor is increased, and when the tension exceeds the set threshold of the tension sensor, the motor is turned off. When the tension sensor is not effective, the motor 1 runs, power is transmitted to the worm wheel assembly 5 through the motor output shaft 4 and then transmitted to the worm 6 from the worm wheel assembly 5, and the worm 6 transmits the power to the mud scraper central shaft 3 through the shear pin 7. When the load was too big, 4 rotational speeds of motor output shaft increased to 6 rotational speeds of worm increase, because the mud scraper load is too big, 3 rotational speeds of mud scraper center pin can't increase, and the 3 rotational speeds of worm 6 and mud scraper center pin are unmatched, and shear pin 7 can't bear 6 and 3 torsions of mud scraper center pin, and shear pin 7 takes place the fracture, and the mud scraper stall. When the tension sensor and the shear pin are not effective, the load of the mud scraper is increased, the output torque of the motor 1 is increased, the current is increased, and when the current exceeds the threshold value of the current overload protector 11, the current overload protector 11 is started, and the motor is closed.
The described embodiments are only some embodiments of the invention, not all 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.
Claims (3)
1. The multiple overload protection device for the mud scraper is characterized by comprising a motor, wherein the motor is connected with a central shaft of the mud scraper through a speed reducer, a worm gear assembly connected with an output shaft of the motor is arranged in the speed reducer, a worm matched with the worm gear assembly is arranged in the speed reducer, the worm is of a hollow structure, a central shaft of the mud scraper extends into the worm, the top of the central shaft of the mud scraper and the top of the worm extend out of the speed reducer, and the top of the central shaft of the mud scraper and the top of the worm are connected through a shearing pin; the sensor support is connected with the outer wall of the speed reducer through a tension sensor.
2. The multiple overload protection device for a mud scraper as claimed in claim 1, wherein the motor is provided with a current overload protector.
3. The multiple overload protection device for the mud scraper as claimed in claim 1, wherein the speed reducer is provided with a cap for covering the top of the central shaft of the mud scraper and the extended part of the top of the worm, and the cap is connected with the box of the speed reducer through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280983.0A CN112473198A (en) | 2020-11-17 | 2020-11-17 | Multiple overload protection device for mud scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280983.0A CN112473198A (en) | 2020-11-17 | 2020-11-17 | Multiple overload protection device for mud scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112473198A true CN112473198A (en) | 2021-03-12 |
Family
ID=74930804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011280983.0A Pending CN112473198A (en) | 2020-11-17 | 2020-11-17 | Multiple overload protection device for mud scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112473198A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010000412U (en) * | 1999-06-10 | 2001-01-05 | 김형태 | A driving apparatus for collecting circular sludges |
| CN201244387Y (en) * | 2008-06-10 | 2009-05-27 | 丹东北方环保工程有限公司 | Slide rake-lifting mud scraper with automatic torquemoment tracking device |
| CN201763845U (en) * | 2010-09-30 | 2011-03-16 | 武汉钢铁(集团)公司 | Driving device with cutting-off shaft of overload protection |
| CN102974136A (en) * | 2012-11-29 | 2013-03-20 | 无锡托普搅拌设备有限公司 | Novel mud scraper |
| CN203790635U (en) * | 2014-02-26 | 2014-08-27 | 石家庄慕田峪环境工程有限公司 | Central transmission sludge scraper |
| CN104179891A (en) * | 2014-07-28 | 2014-12-03 | 刘影 | Overload-preventing speed reducer for tunnel type drying room |
| CN204004262U (en) * | 2014-06-25 | 2014-12-10 | 南京源自电力自动化设备有限公司 | There is the worm gearing of protective gear |
| CN204073524U (en) * | 2014-08-07 | 2015-01-07 | 施世英 | A kind of efficient mud scraper |
| CN105817059A (en) * | 2016-05-18 | 2016-08-03 | 国美（天津）水技术工程有限公司 | Sludge disposal system of secondary sedimentation tank |
| CN206016728U (en) * | 2016-07-01 | 2017-03-15 | 沧州市华油飞达石油装备有限公司 | Centrifugal desanding desilts all-in-one machine |
| CN109745741A (en) * | 2017-11-03 | 2019-05-14 | 扬州市中太环保设备有限公司 | A kind of intelligence mud scraper |
| CN210273729U (en) * | 2019-08-30 | 2020-04-07 | 信阳大唐环保设备技术有限公司 | Counter-torque protection device of worm gear speed reducer |
| CN214019369U (en) * | 2020-11-17 | 2021-08-24 | 江苏一环集团有限公司 | Overload protection device for mud scraper |
| CN214319237U (en) * | 2020-11-17 | 2021-10-01 | 江苏一环集团有限公司 | Multiple overload protection device for mud scraper |
-
2020
- 2020-11-17 CN CN202011280983.0A patent/CN112473198A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010000412U (en) * | 1999-06-10 | 2001-01-05 | 김형태 | A driving apparatus for collecting circular sludges |
| CN201244387Y (en) * | 2008-06-10 | 2009-05-27 | 丹东北方环保工程有限公司 | Slide rake-lifting mud scraper with automatic torquemoment tracking device |
| CN201763845U (en) * | 2010-09-30 | 2011-03-16 | 武汉钢铁(集团)公司 | Driving device with cutting-off shaft of overload protection |
| CN102974136A (en) * | 2012-11-29 | 2013-03-20 | 无锡托普搅拌设备有限公司 | Novel mud scraper |
| CN203790635U (en) * | 2014-02-26 | 2014-08-27 | 石家庄慕田峪环境工程有限公司 | Central transmission sludge scraper |
| CN204004262U (en) * | 2014-06-25 | 2014-12-10 | 南京源自电力自动化设备有限公司 | There is the worm gearing of protective gear |
| CN104179891A (en) * | 2014-07-28 | 2014-12-03 | 刘影 | Overload-preventing speed reducer for tunnel type drying room |
| CN204073524U (en) * | 2014-08-07 | 2015-01-07 | 施世英 | A kind of efficient mud scraper |
| CN105817059A (en) * | 2016-05-18 | 2016-08-03 | 国美（天津）水技术工程有限公司 | Sludge disposal system of secondary sedimentation tank |
| CN206016728U (en) * | 2016-07-01 | 2017-03-15 | 沧州市华油飞达石油装备有限公司 | Centrifugal desanding desilts all-in-one machine |
| CN109745741A (en) * | 2017-11-03 | 2019-05-14 | 扬州市中太环保设备有限公司 | A kind of intelligence mud scraper |
| CN210273729U (en) * | 2019-08-30 | 2020-04-07 | 信阳大唐环保设备技术有限公司 | Counter-torque protection device of worm gear speed reducer |
| CN214019369U (en) * | 2020-11-17 | 2021-08-24 | 江苏一环集团有限公司 | Overload protection device for mud scraper |
| CN214319237U (en) * | 2020-11-17 | 2021-10-01 | 江苏一环集团有限公司 | Multiple overload protection device for mud scraper |
Non-Patent Citations (2)
| Title |
|---|
| 张磊，李广华: "锅炉设备与运行", 30 June 2007, 北京：中国电力出版社 * |
| 耿孝正: "塑料机械的使用与维护", 31 August 1998, 北京：中国轻工业出版社, pages: 365 * |
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