CN102678109A - Cutting part protective device for continuous mining machine and continuous mining machine - Google Patents
Cutting part protective device for continuous mining machine and continuous mining machine Download PDFInfo
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- CN102678109A CN102678109A CN2012101261122A CN201210126112A CN102678109A CN 102678109 A CN102678109 A CN 102678109A CN 2012101261122 A CN2012101261122 A CN 2012101261122A CN 201210126112 A CN201210126112 A CN 201210126112A CN 102678109 A CN102678109 A CN 102678109A
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Abstract
The invention provides a cutting part protective device for a continuous mining machine. The cutting part protective device is characterized in that the device comprises a torque limiting device, a speed reducer connected to the cutting part of the continuous mining machine, and a cutting part motor, and the cutting part motor is controlled by detecting the torque load born by the speed reducer to transmit power to the speed reducer. Accordingly, the invention further provides a continuous mining machine. Through the technical scheme provided by the invention, the cutting action can be stopped in a timely manner when the torque born by the cutting part of the continuous mining machine is excessive, so as to effectively protect the continuous mining machine and avoid damage.
Description
Technical field
The present invention relates to the mechanical protection technical field, adopt machine in particular to cutting units protective device and a kind of company of a kind of Lian Caiji of being used for.
Background technology
At present, Lian Caiji fault rate in use is higher, and the space of down-hole is narrow and small, and feasible maintenance for Lian Caiji is very inconvenient, and high fault rate can have a strong impact on the production efficiency in colliery.Causing existing company to adopt the reason that high fault rate appears in machine, mainly is still to have some defectives on its structure, and main following points are not enough:
(1) cutting units has only the overcurrent protection structure of torque axis and motor itself, and the limit square is limited in one's ability, and less stable;
The degree of depth of cutting of (2) adopting machine cut coal all is that the moving control walking of armrest advances; And do not consider for the conditions such as hardness of cut object; Make and can't the torque that cutting units receives be control effectively; Possibly cause cutting units to break down owing to the moment of torsion that receives is excessive, and the control because the special staff of needs use walks, the waste of manpower resource.
Therefore, need a kind of new cutting units resist technology that is used for Lian Caiji, when the moment of torsion that can receive at the cutting units of Lian Caiji is excessive, in time stops cutting action, thereby Lian Caiji is effectively protected, avoid causing damage.
Summary of the invention
The present invention just is being based on the problems referred to above, has proposed a kind of new cutting units resist technology that is used for Lian Caiji, when the moment of torsion that can receive at the cutting units of Lian Caiji is excessive, in time stops cutting action, thereby Lian Caiji is effectively protected, and avoids causing damage.
In view of this; The present invention proposes the cutting units protective device of a kind of Lian Caiji of being used for; Comprise: torque limiting device; Be connected to said company and adopt the reducer and the cutting units motor of the cutting units of machine, through detecting the torque loads that said reducer bears, to control the power transmission of said cutting units motor to said reducer.
In this technical scheme, detect through the moment of torsion that cutting units is born, when excessive, can stop the cutting action of cutting units as if detected moment of torsion, particularly, through stopping the cutting units motor stops cutting action from cutting units to cutting units transmission power.
In technique scheme; Preferably; Said torque limiting device comprises: limit square device is connected between said reducer and the said cutting units motor, at the detected real-time moment of torsion of said limit square device during greater than the torque threshold preset; Through separating, make said cutting units motor be in Light Condition with said reducer.In this technical scheme; Can adopt limit square device to carry out the detection that cutting units bears moment of torsion separately; Limit square device itself is preset with torque threshold, surpasses under the situation of this torque threshold at its torque value of sensing, will separate with reducer; Make the cutting units motor be in idling conditions, stop reducer transmission power.And when torque value was lower than torque threshold, limit square device can be connected with reducer again, and again with power transmission to the reducer of cutting units motor, made cutting units can restart cutting action.
In technique scheme, preferably, also comprise: shaft coupling is connected between said limit square device and the said cutting units motor.In this technical scheme, shaft coupling can be adjusted ± 3 ° of input and output angular deviations, thereby reduces between cutting units motor, limit square device, the reducer concentricity requirement when mounted.
In technique scheme, preferably, said torque limiting device comprises: torque axis and limit square device; Wherein, One end of said torque axis be connected to said reducer, and the other end of said torque axis links to each other with said limit square device after passing from the through hole of said cutting units motor center; Said limit square device is connected to said torque axis and said cutting units motor, during greater than preset torque threshold, through separating with said torque axis, makes said cutting units motor be in Light Condition at the detected real-time moment of torsion of said limit square device.In this technical scheme, adopt on the machine in one type of company, the cutting units motor is a hollow structure, the torque axis that inserts through the centre, with power transmission to reducer.And through limit square device is set between torque axis and cutting units motor; Can be passed to by the moment of torsion that torque axis bears reducer on the limit square device, thereby when moment of torsion was excessive, limit square device separated with torque axis; The cutting units motor stops to transmit power through torque axis to reducer; And when moment of torsion reduced, limit square device was connected with torque axis again, continues power transmission.
In technique scheme, preferably, said torque limiting device also comprises: shaft coupling; Be connected between said limit square device and the said cutting units motor; And said shaft coupling is provided with through hole, the said other end of said torque axis is passed from this through hole after, be connected to said limit square device.In this technical scheme, shaft coupling can be adjusted ± 3 ° of input and output angular deviations, thereby reduces between cutting units motor, limit square device, torque axis, the reducer concentricity requirement when mounted.
In technique scheme, preferably, also comprise: traveling control device, through detecting the torque loads that said cutting units bears, said company is adopted the speed of travel of machine and control.In this technical scheme; There is the difference on the hardness in the rib of cut; Thereby the torque loads that causes cutting units to bear also corresponding size variation can occur, and if make to connect and to adopt organizational security and hold the identical speed of travel, then obviously for cutting units; Be inappropriate, thereby the torque loads that very easily makes it bear is excessive; And through constructor's manual adjustments speed of travel, obviously also can't meet the demands, because can't accurately judge current torque loads, therefore, can detect, thereby control the speed of travel automatically through value to this torque loads.
In technique scheme, preferably, said traveling control device specifically comprises: current detecting unit, be connected to said cutting units motor, and be used to detect the load current of said cutting units motor; And controller, be connected to said current detecting unit, be used for size according to said load current, generate corresponding speed control signal, and be sent to the running part motor that machine is adopted by said company, to control this running part rotating speed of motor.In this technical scheme, when the torque loads that cutting units bears changes, owing to have power transmission between the reducer of cutting units and the cutting units motor; Therefore, the cutting units motor can be sensed the variation of torque loads, and its corresponding load electric current also corresponding variation can take place; Therefore; Can detect through load current, thereby learn the size of the torque loads that cutting units affords, and connect the speed of travel control of the machine of adopting accordingly this cutting units motor.Particularly, through to the running part rotating speed of motor, thereby the speed of travel of Lian Caiji is controlled.
In technique scheme, preferably, said controller is a frequency converter, and said speed control signal is a frequency variation signal.In this technical scheme, through changing the frequency of running part motor, thereby change its motor speed, and and then the company's of making speed of travel of adopting machine change.
In technique scheme, preferably, said running part motor is a variable-frequency motor.
According to another aspect of the invention, also proposed a kind of company and adopted machine, comprised cutting units protective device like each described Lian Caiji of being used in the above-mentioned technical scheme.
Through above technical scheme, when the moment of torsion that can receive at the cutting units of Lian Caiji is excessive, in time stops cutting action, thereby Lian Caiji is effectively protected, avoid causing damage.
Description of drawings
Fig. 1 shows the structural representation of the cutting units protective device of the Lian Caiji of being used for according to an embodiment of the invention;
Fig. 2 shows the structural representation of the cutting units protective device that is used for Lian Caiji according to another embodiment of the invention;
Fig. 3 shows the structural representation that machine is adopted by company according to an embodiment of the invention;
Fig. 4 is the vertical view of the Lian Caiji of embodiment shown in Figure 3.
The specific embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with the accompanying drawing and the specific embodiment.Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
A lot of details have been set forth in the following description so that make much of the present invention; But; The present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention does not receive the restriction of following disclosed specific embodiment.
Below in conjunction with Fig. 1 to Fig. 4, the embodiment based on technical scheme of the present invention is elaborated.
As shown in Figure 1; It is the cutting units protective device of the Lian Caiji of being used for according to an embodiment of the invention; Comprise: limit square device 3 is connected between reducer 1 and the cutting units motor 2, at limit square device 3 detected real-time moments of torsion during greater than the torque threshold preset; Through separating, make cutting units motor 2 be in Light Condition with reducer 1.In this technical scheme; Can adopt limit square device 3 to carry out the detection that cutting units 10 bears moment of torsion separately; Limit square device 3 itself is preset with torque threshold, surpasses under the situation of this torque threshold at its torque value of sensing, will separate with reducer 1; Make cutting units motor 2 be in idling conditions, stop reducer 1 transmission power.And when torque value was lower than torque threshold, limit square device 3 can be connected with reducer 1 again, and again with power transmission to the reducer 1 of cutting units motor 2, made cutting units 10 can restart cutting action.
In technique scheme, can also comprise: shaft coupling 4 is connected between limit square device 3 and the cutting units motor 2.In this technical scheme, shaft coupling 4 can be adjusted ± 3 ° of input and output angular deviations, thereby reduces between cutting units motor 2, limit square device 3, the reducer 1 concentricity requirement when mounted.
As shown in Figure 2; Under another kind of situation, the cutting units protective device that is used for Lian Caiji according to another embodiment of the invention comprises: torque axis 5 and limit square device 3; Wherein, One end of torque axis 5 is connected to reducer 1 after passing from the through hole at cutting units motor 2 centers, and the other end of torque axis 5 links to each other with limit square device 3; The center of limit square device 3 also has through hole; And the through hole at the center of this through hole and cutting units motor 2 is positioned on the same axis; Torque axis 5 passes the through hole at limit square device 3 centers and links to each other with torque axis 5, and limit square device 3 also is fixedly connected with cutting units motor 2, when limitting square device 3 detected real-time moments of torsion greater than the torque threshold preset; Through separating, make cutting units motor 2 be in Light Condition with torque axis 5.In this technical scheme, to adopt on the machine in one type of company, cutting units motor 2 is a hollow structure, through the torque axis 5 of centre insertion, with power transmission to reducer 1.And through limit square device 3 is set between torque axis 5 and cutting units motor 2; Can be passed to by the moment of torsion that torque axis 5 bears reducer 1 on the limit square device 3, thereby when moment of torsion was excessive, limit square device 3 separated with torque axis 5; Cutting units motor 2 stops through torque axis 5 to reducer 1 transmission power; And when moment of torsion reduced, limit square device 3 was connected with torque axis 5 again, proceeds power transmission.
In technique scheme, can also comprise: shaft coupling 4, be connected between limit square device 3 and the cutting units motor 2, and shaft coupling 4 is provided with through hole, the other end of torque axis 5 is passed from this through hole after, be connected to and limit square device 3.In this technical scheme, shaft coupling 4 can be adjusted ± 3 ° of input and output angular deviations, thereby reduces between cutting units motor 2, limit square device 3, torque axis 5, the reducer 1 concentricity requirement when mounted.
Like Fig. 3 and shown in Figure 4, for the Lian Caiji of cutting units 10 that above-mentioned any technical scheme is installed, through this cutting units 10 is installed; Make this Lian Caiji when the cutting action that carries out rib; Can the torque loads that cutting units 10 bears be detected, and when this torque loads is excessive, stop cutting action; With the protection cutting units, avoid transshipping and cause damage cutting units.
In technique scheme, this company adopts on the machine and can also be provided with: the traveling control device (not shown), through detecting the torque loads that cutting units 10 bears, the speed of travel of Lian Caiji is controlled.In this technical scheme; There is the difference on the hardness in the rib of cut; Thereby the torque loads that causes cutting units 10 to bear also corresponding size variation can occur, and if make to connect and to adopt organizational security and hold the identical speed of travel, then obviously for cutting units 10; Be inappropriate, thereby the torque loads that very easily makes it bear is excessive; And through constructor's manual adjustments speed of travel, obviously also can't meet the demands, because can't accurately judge current torque loads, therefore, can detect, thereby control the speed of travel automatically through value to this torque loads.
In technique scheme, traveling control device specifically comprises: current detecting unit, be connected to cutting units motor 2, and be used to detect the load current of cutting units motor 2; And controller, be connected to current detecting unit, be used for size according to load current, generate corresponding speed control signal, and be sent to the running part motor 30 of Lian Caiji, to control the rotating speed of this running part motor 30.In this technical scheme; When the torque loads that cutting units 10 bears changes, owing to have power transmission between the reducer 1 of cutting units 100-and the cutting units motor 2, therefore; Cutting units motor 2 can be sensed the variation of torque loads; And corresponding variation also can take place in its corresponding load electric current, therefore, can detect through the load current to this cutting units motor 2; Thereby learn the size of the torque loads that cutting units 10 affords, and connect the speed of travel control of the machine of adopting accordingly.Particularly, Lian Caiji walks through running part 20, and is to come running part 20 is controlled through running part motor 30, therefore, can be through the rotating speed of running part motor 30 be controlled, thus the speed of travel of Lian Caiji is controlled.
In technique scheme, controller is a frequency converter, and speed control signal is a frequency variation signal.In this technical scheme, through changing the frequency of running part motor 30, thereby change its motor speed, and and then the company's of making speed of travel of adopting machine change.
In technique scheme, running part motor 30 can be variable-frequency motor.
More than be described with reference to the accompanying drawings technical scheme of the present invention, considered in the correlation technique, not enough for the protection of the cutting units of Lian Caiji; Very easily cause the damage of cutting units, therefore, machine is adopted by the cutting units protective device and a kind of company that the invention provides a kind of Lian Caiji of being used for; When the moment of torsion that can receive at the cutting units of Lian Caiji is excessive; In time stop cutting action, thereby Lian Caiji is effectively protected, avoid causing damage.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a cutting units protective device that is used for Lian Caiji is characterized in that, comprising:
Torque limiting device is connected to reducer and cutting units motor that the cutting units of machine is adopted by said company, through detecting the torque loads that said reducer bears, to control the power transmission of said cutting units motor to said reducer.
2. the cutting units protective device that is used for Lian Caiji according to claim 1 is characterized in that said torque limiting device comprises:
Limit square device is connected between said reducer and the said cutting units motor, during greater than the torque threshold preset, through separating with said reducer, makes said cutting units motor be in Light Condition at the detected real-time moment of torsion of said limit square device.
3. the cutting units protective device that is used for Lian Caiji according to claim 2 is characterized in that, also comprises:
Shaft coupling is connected between said limit square device and the said cutting units motor.
4. the cutting units protective device that is used for Lian Caiji according to claim 1 is characterized in that said torque limiting device comprises: torque axis and limit square device, wherein,
One end of said torque axis be connected to said reducer, and the other end of said torque axis links to each other with said limit square device after passing from the through hole of said cutting units motor center;
Said limit square device is connected to said torque axis and said cutting units motor, during greater than preset torque threshold, through separating with said torque axis, makes said cutting units motor be in Light Condition at the detected real-time moment of torsion of said limit square device.
5. the cutting units protective device that is used for Lian Caiji according to claim 4 is characterized in that said torque limiting device also comprises:
Shaft coupling is connected between said limit square device and the said cutting units motor, and said shaft coupling is provided with through hole, the said other end of said torque axis is passed from this through hole after, be connected to said limit square device.
6. according to each described cutting units protective device that is used for Lian Caiji in the claim 1 to 5, it is characterized in that, also comprise:
Traveling control device through detecting the torque loads that said cutting units bears, is adopted the speed of travel of machine and is controlled to said company.
7. the cutting units protective device that is used for Lian Caiji according to claim 6 is characterized in that said traveling control device specifically comprises:
Current detecting unit is connected to said cutting units motor, is used to detect the load current of said cutting units motor; And
Controller is connected to said current detecting unit, is used for the size according to said load current, generates corresponding speed control signal, and is sent to the running part motor that machine is adopted by said company, to control this running part rotating speed of motor.
8. the cutting units protective device that is used for Lian Caiji according to claim 7 is characterized in that said controller is a frequency converter, and said speed control signal is a frequency variation signal.
9. the cutting units protective device that is used for Lian Caiji according to claim 8 is characterized in that said running part motor is a variable-frequency motor.
10. a Lian Caiji is characterized in that, comprises the cutting units protective device like each described Lian Caiji of being used in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101261122A CN102678109A (en) | 2012-04-26 | 2012-04-26 | Cutting part protective device for continuous mining machine and continuous mining machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101261122A CN102678109A (en) | 2012-04-26 | 2012-04-26 | Cutting part protective device for continuous mining machine and continuous mining machine |
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| CN102678109A true CN102678109A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101261122A Pending CN102678109A (en) | 2012-04-26 | 2012-04-26 | Cutting part protective device for continuous mining machine and continuous mining machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453891A (en) * | 2014-08-18 | 2015-03-25 | 三一重型装备有限公司 | Coal mining machine and cutting part thereof |
| WO2016150242A1 (en) * | 2015-03-23 | 2016-09-29 | 中国矿业大学 | Magneto-rheological technology based overload protection device for torque shaft of electric motor in coal mining machine |
| CN106640069A (en) * | 2017-01-17 | 2017-05-10 | 太原理工大学 | Coal mining machine and transmission system thereof |
| CN108343435A (en) * | 2018-03-30 | 2018-07-31 | 北京力信德华科技有限公司 | It is a kind of that there is the coalcutter for drawing running part double protecting device and its guard method |
| CN113695056A (en) * | 2021-08-09 | 2021-11-26 | 山东邦迈智能科技有限公司 | Multifunctional anchor-guard transshipment crusher |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453891A (en) * | 2014-08-18 | 2015-03-25 | 三一重型装备有限公司 | Coal mining machine and cutting part thereof |
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| AU2016236722B2 (en) * | 2015-03-23 | 2019-10-10 | China University Of Mining And Technology | Magneto-rheological technology based overload protection device for torque shaft of electric motor in coal mining machine |
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| CN108343435A (en) * | 2018-03-30 | 2018-07-31 | 北京力信德华科技有限公司 | It is a kind of that there is the coalcutter for drawing running part double protecting device and its guard method |
| CN108343435B (en) * | 2018-03-30 | 2024-05-10 | 北京力信德华科技有限公司 | Coal mining machine with traction traveling part double protection device and protection method thereof |
| CN113695056A (en) * | 2021-08-09 | 2021-11-26 | 山东邦迈智能科技有限公司 | Multifunctional anchor-guard transshipment crusher |
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Application publication date: 20120919 |