CN105903543A - Crusher alarming protection device and control method thereof - Google Patents
Crusher alarming protection device and control method thereof Download PDFInfo
- Publication number
- CN105903543A CN105903543A CN201610228830.9A CN201610228830A CN105903543A CN 105903543 A CN105903543 A CN 105903543A CN 201610228830 A CN201610228830 A CN 201610228830A CN 105903543 A CN105903543 A CN 105903543A
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- Prior art keywords
- relay
- disintegrating machine
- audible
- open contact
- visual annunciator
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Relating to the technical field of automatic control, the invention discloses a crusher alarming protection device and a control method thereof. The device comprises: an audible and visual alarm; and a first relay, wherein the first relay and the audible and visual alarm are connected in series in a main motor alarm circuit of the crusher, and a normally open contact of the first relay is connected to the audible and visual alarm. The device provided by the invention can achieve audible and visual alarming when alarm information is generated in an alarm system to warn related personnel to respond immediately, thus ensuring safe operation of the crusher and avoiding economic loss.
Description
Technical field
The present invention relates to automatic control technology field, in particular it relates to a kind of disintegrating machine alarm and protection dress
Put and a kind of control method for disintegrating machine alarm protecting apparatus.
Background technology
The main lube system of disintegrating machine of the prior art (such as Sandvik CH series gyratory crusher)
Unite and self have a sleeving temperature, pressure, flow rate protective device.When above-mentioned parameter changes, during beyond setting value,
Can show with in the alarm log list of the industrial computer being connected, and warning message is divided into " A,
B, C " three classes are (low containing return flow when occurring when A reports to the police；Oil-feed flow is low；Trunnion axis lubricates
System pressure is low, returning-oil temperature is high；Jib bearing (upper jib) temperature is too high；Main spindle's A size
Dropout etc.), represent that disintegrating machine occurs that catastrophe failure, mair motor stop immediately, and report to the police at this
Red light is shown before information letter list.Occur when B reports to the police (containing plugged filter；Dust-proof pressure is low；Oil level
Low etc.), represent that disintegrating machine exists fault, but mair motor remains in operation, and at this warning message letter row
Red yellow lamp is shown before table；C reports to the police and simply alerts class warning, and mair motor remains in operation, and reports to the police at this
Red yellow lamp is shown before information letter list.
Although prior art exists warning system, but find this kind of alarm signal in actual use
Breath display is difficult to cause in time the attention of operator, repeatedly occurs because of broken owner's lubricating oil return temperature liter
Height, the early warning information sent fails to cause the attention in post, makes returning-oil temperature be increased to factory settings value
(53 DEG C) are reported to the police and are shut down, and when returning-oil temperature reaches 53 DEG C, the parts such as copper sheathing, main shaft will damage, and makes
Become serious financial consequences.Warning system the most of the prior art needs the most perfect, to ensure disintegrating machine
Safe operation, it is to avoid economic loss.
Summary of the invention
For there is the technical problem that disintegrating machine warning system is left to be desired in prior art, the present invention carries
Having supplied a kind of disintegrating machine alarm protecting apparatus, this device includes: audible-visual annunciator；And first relay
Device, wherein this first relay and described audible-visual annunciator are series at the mair motor warning of described disintegrating machine
In circuit, the normally open contact of described first relay is connected with described audible-visual annunciator.
Preferably, the normally closed interlock of described first relay is series at the feeding belt operation electricity of disintegrating machine
Lu Zhong.
Preferably, this device also includes: the second relay, and described second relay continues with described first
Electrical equipment is in parallel, and the normally open contact of wherein said second relay is series in mair motor trip circuit.
Preferably, described second relay is energization delay relay, described second relay normally opened
Contact is timing closing normally open contact.
Correspondingly, present invention also offers a kind of control method for disintegrating machine alarm protecting apparatus,
The method includes: receive disintegrating machine status data；And according to disintegrating machine status data and state threshold
Value, by controlling first actuating of relay, triggers audible-visual annunciator；Wherein said first relay and
Described audible-visual annunciator is series in the mair motor warning circuit of described disintegrating machine, described first relay
Normally open contact be connected with described audible-visual annunciator.
Preferably, described disintegrating machine status data includes main lubricating oil return temperature, and described basis is broken
Broken machine status data and state threshold, by controlling first actuating of relay, trigger audible-visual annunciator bag
Include: in the case of described main lubricating oil return temperature is more than state threshold, first actuating of relay, touch
Sounding light crossing-signal.
Preferably, the method also includes: broken by also controlling while controlling first actuating of relay
The feeding belt of broken machine stops feed, and the normally closed interlock of wherein said first relay is series at disintegrating machine
Feeding belt run in circuit.
Preferably, the method also includes: exceed pre-in described main lubricating oil return temperature more than state threshold
Make the mair motor of described disintegrating machine stop in the case of the section of fixing time by controlling second actuating of relay
Machine, wherein said second relay is in parallel with described first relay, described second relay normally opened
Contact is series in mair motor trip circuit.
Preferably, described second relay is energization delay relay, described second relay normally opened
Contact is timing closing normally open contact.
Preferably, described predetermined amount of time is 30 seconds.
Use the disintegrating machine alarm protecting apparatus that the present invention provides, by the mair motor at original disintegrating machine
Warning circuit increases audible-visual annunciator and the first relay, it is possible to realize when warning system generates report
Sound and light alarm can be carried out during alarming information, make a response warning related personnel to need at once, broken to ensure
Broken machine safe operation, it is to avoid economic loss.
Use the control method for disintegrating machine alarm protecting apparatus that the present invention provides, broken by receiving
Machine status data, and afterwards according to disintegrating machine status data and state threshold by controlling the first relay
Device action triggers audible-visual annunciator, it is possible to realize can carrying out when generating warning message in warning system
Sound and light alarm, makes a response, to ensure disintegrating machine safe operation, keeps away warning related personnel to need at once
Exempt from economic loss.
Other features and advantages of the present invention will give specifically in detailed description of the invention part subsequently
Bright.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description,
It is used for explaining the present invention together with detailed description below, but is not intended that the limit to the present invention
System.In the accompanying drawings:
Fig. 1 is the electrical principle of the disintegrating machine alarm protecting apparatus according to one embodiment of the present invention
Figure；
Fig. 2 is the controlling party for disintegrating machine alarm protecting apparatus according to one embodiment of the present invention
The flow chart of method；
Fig. 3 is the electrical principle of the disintegrating machine alarm protecting apparatus according to another embodiment of the invention
Figure；And
Fig. 4 is the electrical principle of the disintegrating machine alarm protecting apparatus of the another embodiment according to the present invention
Figure.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.It is to be understood that
It is that detailed description of the invention described herein is merely to illustrate and explains the present invention, is not limited to
The present invention.
Will be exemplified below the thought of the present invention, it is to be understood that these examples be that but not limited is shown
Example, protection scope of the present invention is not limited to this:
On the basis of the control system of disintegrating machine in the prior art and protection system, the present invention is to existing
The alarm and protection aspect having technology is improved, to improve warning system, it is ensured that the safety fortune of disintegrating machine
OK, specifically, provided below various embodiments to illustrate:
Embodiment 1
Fig. 1 is the electrical principle of the disintegrating machine alarm protecting apparatus according to one embodiment of the present invention
Figure, as it is shown in figure 1, this device may include that audible-visual annunciator 10；And first relay
308KA, wherein this first relay 308KA and described audible-visual annunciator 10 are series at described disintegrating machine
Mair motor warning circuit (during wherein K 24A is original mair motor warning circuit alarm signal output
Relay) in, the normally open contact of wherein said first relay 308KA and described audible-visual annunciator 10
Connect.Wherein QF is chopper, L and N is respectively detachable and non-dismountable terminal, only shows in figure
Having gone out the part that the present invention improves, original mair motor warning circuit does not shows that.
In embodiment 1, work process is: when alarm signal generates, the relay K in Fig. 1
The normally open contact adhesive of 24A so that the first relay 308KA obtains electric, thus described first relay
The normally open contact adhesive of 308KA, audible-visual annunciator 10 is triggered, and carries out sound and light alarm.Such as described
Audible-visual annunciator 10 can be made up of buzzer and flashing lamp.Related personnel can pass through audible-visual annunciator
Warning know in the very first time, the parameter of crusher system exceedes safety range, needs to be correlated with
Operation, such as, carry out stopping the operation that the mair motor of feed or disintegrating machine is shut down.
Correspondingly, corresponding to the alarm protecting apparatus of embodiment 1, the present invention also provides for a kind of for this dress
The control method put, the method can be performed (such as to configure by the controller in existing crusher system
Existing PLC performs), Fig. 2 be according to one embodiment of the present invention for breaking
The flow chart of the control method of broken machine alarm protecting apparatus, as in figure 2 it is shown, the method includes following step
Rapid:
Step 1001, receives disintegrating machine status data；And
Step 1002, according to disintegrating machine status data and state threshold, by controlling the first relay
Action, triggers audible-visual annunciator；Wherein said first relay and described audible-visual annunciator are series at institute
State in the mair motor warning circuit of disintegrating machine, the normally open contact of wherein said first relay and described sound
Light crossing-signal connects.
Specifically, described disintegrating machine status data can include that main lubricating oil return temperature (or can also be
Upper jib temperature, main spindle's, enter/the parameter such as return flow, system pressure), the controller of system can
With these disintegrating machine status datas of real-time reception and it is compared with state threshold, in described main profit
Slide back to oil temperature more than in the case of state threshold (such as this state threshold is set as 49 DEG C), controller
The normally open contact adhesive of relay K 24A can be made, and make first actuating of relay as mentioned above,
Trigger audible-visual annunciator.
Embodiment 2
Fig. 3 is the electrical principle of the disintegrating machine alarm protecting apparatus according to another embodiment of the invention
Figure, as it is shown on figure 3, this device is except including audible-visual annunciator the 10, first relay in embodiment 1
Outside the normally open contact of 308KA and the first relay 308KA, also include the normally closed of the first relay
Contact, and the normally closed interlock of described first relay 308KA be series at disintegrating machine feeding belt fortune
In row circuit (KA121 is that feeding belt runs relay).Wherein QF is chopper, L and N divides
Not Wei detachable and non-dismountable terminal, figure illustrate only the present invention improve part, original mair motor
Warning circuit, feeding belt run circuit and do not show that.
In example 2, work process is: when alarm signal generates, the relay K in Fig. 3
The normally open contact adhesive of 24A so that the first relay 308KA obtains electric, thus described first relay
The normally open contact adhesive of 308KA, audible-visual annunciator 10 is triggered, and carries out sound and light alarm.Such as described
Audible-visual annunciator 10 can be made up of buzzer and flashing lamp.Meanwhile, the first relay 308KA's is normal
Close contact to disconnect so that relay K A121 dead electricity, cause the feeding belt of disintegrating machine to run circuit and break
Electricity, the feeding belt of disintegrating machine is out of service, i.e. realizes stopping feed behaviour immediately when alarm signal generates
Make.Using such embodiment, related personnel can be by the warning of audible-visual annunciator in the very first time
Knowing, the parameter of crusher system exceedes safety range, needs to carry out associative operation, and automatically carries out
Stop the operation of feed, prevent the carelessness of related personnel.
Correspondingly, corresponding to the alarm protecting apparatus of embodiment 2, the present invention also provides for a kind of for this dress
The control method put, the method can be by the controller (such as PLC) in crusher system
Performing, the method comprises the following steps:
Step 2001, receives disintegrating machine status data；And
Step 2002, according to disintegrating machine status data and state threshold, by controlling the first relay
Action, triggers audible-visual annunciator, and the feeding belt the most also controlling disintegrating machine stops feed；Wherein said
First relay and described audible-visual annunciator are series in the mair motor warning circuit of described disintegrating machine, institute
The normally open contact stating the first relay is connected with described audible-visual annunciator, and the normally closed of described first relay is touched
Head is series at the feeding belt of disintegrating machine and runs in circuit.
Specifically, described disintegrating machine status data can include that main lubricating oil return temperature (or can also be
Upper jib temperature, main spindle's, enter/the parameter such as return flow, system pressure), the controller of system can
With these disintegrating machine status datas of real-time reception and it is compared with state threshold, in described main profit
Slide back to oil temperature more than in the case of state threshold (such as this state threshold is set as 49 DEG C), controller
The normally open contact adhesive of relay K 24A can be made, and make first actuating of relay as mentioned above,
Trigger audible-visual annunciator and control the feeding belt stopping feed of disintegrating machine simultaneously.
Embodiment 3
Fig. 4 is the electrical principle of the disintegrating machine alarm protecting apparatus of the another embodiment according to the present invention
Figure, as shown in Figure 4, this device is except including audible-visual annunciator the 10, first relay in embodiment 2
308KA and the normally open contact of the first relay 308KA, outside the normally closed interlock of the first relay,
Also include the second relay 308KT, described second relay 308KT and described first relay
308KA is in parallel, and the normally open contact of wherein said second relay 308KT is series at mair motor tripping operation electricity
Lu Zhong.Wherein, described second relay 308KT is energization delay relay, described second relay
The normally open contact of 308KT is timing closing normally open contact.Delay time can be carried out according to practical situation
Arrange, such as, could be arranged to 30 seconds.Wherein QF is chopper, L and N be respectively detachable and
Non-dismountable terminal, illustrate only the part that the present invention improves, original mair motor warning circuit, gives in figure
Material belt runs circuit, mair motor trip circuit does not shows that.
In embodiment 3, work process is: when alarm signal generates, the relay K in Fig. 4
The normally open contact adhesive of 24A so that the first relay 308KA and the second relay 308KT obtains simultaneously
Electricity, thus the normally open contact adhesive of described first relay 308KA, audible-visual annunciator 10 is triggered,
Carry out sound and light alarm.The most described audible-visual annunciator 10 can be made up of buzzer and flashing lamp.Meanwhile,
The normally closed interlock of the first relay 308KA disconnects so that relay K A121 dead electricity, causes disintegrating machine
Feeding belt run down circuitry, the feeding belt of disintegrating machine is out of service.
Unlike embodiment 1-2 before, in 30 seconds, if alarm signal eliminates (such as
When the little scope of temperature fluctuates), the most main lubricating oil return temperature is less than state threshold, then continue
The normally open contact of electrical equipment K 24A disconnects, and the first relay 308KA and the second relay 308KT is simultaneously
Dead electricity, the normally open contact of described first relay 308KA disconnects, and audible-visual annunciator 10 power-off stops report
Alert, the normally closed interlock Guan Bi of the first relay 308KA, the feeding belt of disintegrating machine continues to run with, and is
The normal work of system；
After 30 seconds, if alarm signal does not eliminate (when such as raising) for constant temperature,
The most main lubricating oil return temperature is more than state threshold, then the normally open contact of relay K 24A still closes,
First relay 308KA and the second relay 308KT obtains electric, thus described first relay 308KA
Normally open contact adhesive, audible-visual annunciator 10 is triggered, and carries out sound and light alarm.Meanwhile, the first relay
The normally closed interlock of device 308KA disconnects so that relay K A121 dead electricity, causes the feed skin of disintegrating machine
Tape running down circuitry, the feeding belt of disintegrating machine is out of service.Owing to having already been through 30 seconds, because of
The normally open contact Guan Bi of this described second relay 308KT so that mair motor trip circuit power-off, main
Motor stopping, to ensure the safety of equipment.Using such embodiment, related personnel can pass through sound
The warning of light crossing-signal was known in the very first time, and the parameter of crusher system exceedes safety range, needed
Carry out associative operation, it is possible to carry out stopping feed and the behaviour of mair motor shutdown automatically according to practical situation
Make, prevent the carelessness of related personnel, it is ensured that the safe operation of disintegrating machine, reduce the damage of equipment.
Correspondingly, corresponding to the alarm protecting apparatus of embodiment 3, the present invention also provides for a kind of for this dress
The control method put, the method can be by the controller (such as PLC) in crusher system
Performing, the method comprises the following steps:
Step 3001, receives disintegrating machine status data；And
Step 3002, according to disintegrating machine status data and state threshold, by controlling the first relay
Action, triggers audible-visual annunciator, and the feeding belt the most also controlling disintegrating machine stops feed；Wherein said
First relay and described audible-visual annunciator are series in the mair motor warning circuit of described disintegrating machine, institute
The normally open contact stating the first relay is connected with described audible-visual annunciator, and the normally closed of described first relay is touched
Head is series at the feeding belt of disintegrating machine and runs in circuit.Described second relay and described first relay
Device is in parallel, and the normally open contact of described second relay is series in mair motor trip circuit.
Specifically, described disintegrating machine status data can include that main lubricating oil return temperature (or can also be
Upper jib temperature, main spindle's, enter/the parameter such as return flow, system pressure), the controller of system can
With these disintegrating machine status datas of real-time reception and it is compared with state threshold, in described main profit
Slide back to oil temperature more than in the case of state threshold (such as this state threshold is set as 49 DEG C), controller
The normally open contact adhesive of relay K 24A can be made, and make first actuating of relay as mentioned above, touch
Sounding light crossing-signal and control simultaneously disintegrating machine feeding belt stop feed.
Further, controller can also exceed predetermined more than state threshold in described main lubricating oil return temperature
Continue by controlled as described above second in the case of time period (the most described predetermined amount of time is 30 seconds)
Electrical equipment action makes the mair motor of described disintegrating machine shut down, to ensure that equipment is not because of the too high damaged of temperature.
It should be appreciated that those skilled in the art can select above-mentioned various according to disclosure of the invention
Any one in embodiment, or select the combination in any of above-mentioned various embodiment to configure disintegrating machine report
Warn protection device, and other replacement embodiment also falls into protection scope of the present invention.Further, also
It should be appreciated that the feeding belt of disintegrating machine described herein runs circuit, mair motor warning circuit, master
Motor trip circuit is circuit present in prior art, and the improvement of non-invention, does not therefore have
Being described in detail herein, those skilled in the art could be aware that its concrete circuit structure.
The disintegrating machine alarm protecting apparatus of present invention offer and control method thereof, it is possible to realize working as warning system
Sound and light alarm can be carried out during middle generation warning message, make a response warning related personnel to need at once,
To ensure disintegrating machine safe operation, it is to avoid economic loss.Further, being preferable to carry out of present invention offer is used
Mode, more can control feeding belt automatically according to practical situation and stop feed and mair motor shutdown, significantly
Perfect original warning system, it is ensured that the safe operation of disintegrating machine.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not
It is limited to the detail in above-mentioned embodiment, in the technology concept of the present invention, can be to this
The technical scheme of invention carries out multiple simple variant, and these simple variant belong to the protection model of the present invention
Enclose.
It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid not
Necessary repetition, various possible compound modes are illustrated by the present invention the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as
It is without prejudice to the thought of the present invention, and it should be considered as content disclosed in this invention equally.
Claims (10)
1. a disintegrating machine alarm protecting apparatus, it is characterised in that this device includes:
Audible-visual annunciator；And
First relay, wherein this first relay and described audible-visual annunciator are series at described disintegrating machine
Mair motor warning circuit in, the normally open contact of described first relay and described audible-visual annunciator are even
Connect.
Device the most according to claim 1, it is characterised in that described first relay normally closed
Contact is series at the feeding belt of disintegrating machine and runs in circuit.
Device the most according to claim 2, it is characterised in that this device also includes: second continues
Electrical equipment, described second relay is in parallel with described first relay, wherein said second relay normal
Open contact is series in mair motor trip circuit.
Device the most according to claim 3, it is characterised in that described second relay is energising
Time-delay relay, the normally open contact of described second relay is timing closing normally open contact.
5. the control method for disintegrating machine alarm protecting apparatus, it is characterised in that the method bag
Include:
Receive disintegrating machine status data；And
According to disintegrating machine status data and state threshold, by controlling first actuating of relay, trigger
Audible-visual annunciator；
Wherein said first relay and described audible-visual annunciator are series at the mair motor report of described disintegrating machine
In alert circuit, the normally open contact of described first relay is connected with described audible-visual annunciator.
Method the most according to claim 5, it is characterised in that described disintegrating machine state data packets
Include main lubricating oil return temperature, and described according to disintegrating machine status data and state threshold by controlling
First actuating of relay, triggers audible-visual annunciator and includes: in described main lubricating oil return temperature more than state
In the case of threshold value, first actuating of relay, triggers audible-visual annunciator.
Method the most according to claim 6, it is characterised in that the method also includes: passing through
The feeding belt also controlling disintegrating machine while controlling first actuating of relay stops feed, wherein said
The normally closed interlock of the first relay is series at the feeding belt of disintegrating machine and runs in circuit.
Method the most according to claim 7, it is characterised in that the method also includes: described
Main lubricating oil return temperature exceedes in the case of predetermined amount of time by controlling the second relay more than state threshold
Device action makes the mair motor of described disintegrating machine shut down, and wherein said second relay continues with described first
Electrical equipment is in parallel, and the normally open contact of wherein said second relay is series in mair motor trip circuit.
Method the most according to claim 8, it is characterised in that described second relay is energising
Time-delay relay, the normally open contact of described second relay is timing closing normally open contact.
Method the most according to claim 9, it is characterised in that described predetermined amount of time is 30
Second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610228830.9A CN105903543B (en) | 2016-04-13 | 2016-04-13 | Disintegrating machine alarm protecting apparatus and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610228830.9A CN105903543B (en) | 2016-04-13 | 2016-04-13 | Disintegrating machine alarm protecting apparatus and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105903543A true CN105903543A (en) | 2016-08-31 |
| CN105903543B CN105903543B (en) | 2018-01-09 |
Family
ID=56746902
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610228830.9A Active CN105903543B (en) | 2016-04-13 | 2016-04-13 | Disintegrating machine alarm protecting apparatus and its control method |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114255560A (en) * | 2020-09-23 | 2022-03-29 | 中国石油天然气股份有限公司 | System for eliminating potential safety hazard of oil pumping unit intermittent opening |
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| JPS53137467A (en) * | 1977-05-09 | 1978-11-30 | Kawasaki Heavy Ind Ltd | Method for operation of crushing machine |
| CN201880586U (en) * | 2010-12-15 | 2011-06-29 | 中国神华能源股份有限公司 | Automatic alarm device for startup and shutdown of crusher |
| CN203598913U (en) * | 2013-12-02 | 2014-05-21 | 唐山新冶矿机制造有限公司 | Return oil control system of single cylinder hydraulic cone crusher |
| CN204638334U (en) * | 2015-05-18 | 2015-09-16 | 沂源县元利石粉有限公司 | Raymond machine charging gear |
| CN205121801U (en) * | 2015-11-12 | 2016-03-30 | 白银有色集团股份有限公司 | System for be used for ore grinding conveyer belt feed to prevent that funnel from blockking up |
| CN205462406U (en) * | 2016-01-08 | 2016-08-17 | 马钢(集团)控股有限公司 | Cone crusher idle time is injectd and malfunctioning protection controlling means of separating brake |
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2016
- 2016-04-13 CN CN201610228830.9A patent/CN105903543B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53137467A (en) * | 1977-05-09 | 1978-11-30 | Kawasaki Heavy Ind Ltd | Method for operation of crushing machine |
| CN201880586U (en) * | 2010-12-15 | 2011-06-29 | 中国神华能源股份有限公司 | Automatic alarm device for startup and shutdown of crusher |
| CN203598913U (en) * | 2013-12-02 | 2014-05-21 | 唐山新冶矿机制造有限公司 | Return oil control system of single cylinder hydraulic cone crusher |
| CN204638334U (en) * | 2015-05-18 | 2015-09-16 | 沂源县元利石粉有限公司 | Raymond machine charging gear |
| CN205121801U (en) * | 2015-11-12 | 2016-03-30 | 白银有色集团股份有限公司 | System for be used for ore grinding conveyer belt feed to prevent that funnel from blockking up |
| CN205462406U (en) * | 2016-01-08 | 2016-08-17 | 马钢(集团)控股有限公司 | Cone crusher idle time is injectd and malfunctioning protection controlling means of separating brake |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114255560A (en) * | 2020-09-23 | 2022-03-29 | 中国石油天然气股份有限公司 | System for eliminating potential safety hazard of oil pumping unit intermittent opening |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105903543B (en) | 2018-01-09 |
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