CN209939927U - Bucket wheel reduction box protection system - Google Patents
Bucket wheel reduction box protection system Download PDFInfo
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- CN209939927U CN209939927U CN201920800118.0U CN201920800118U CN209939927U CN 209939927 U CN209939927 U CN 209939927U CN 201920800118 U CN201920800118 U CN 201920800118U CN 209939927 U CN209939927 U CN 209939927U
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Abstract
A bucket wheel reduction gearbox protection system belongs to the technical field of electrical equipment. Aiming at the problems that a bucket-wheel motor is easy to damage and inconvenient to maintain due to poor lubricating effect in the existing bucket-wheel reduction box, the bucket-wheel reduction box protection system comprises a bucket-wheel motor M1, a bucket-wheel motor M1 is connected with a bucket-wheel main contactor KM1, a bucket-wheel main contactor KM1 is connected with a bucket-wheel breaker OA, and the bucket-wheel breaker OA is connected with a control main circuit; one end of an oil pump motor M2 is connected with an oil pump main contactor KM2, an oil pump main contactor KM2 is connected with a main breaker OA1, the main breaker OA1 is connected with a control main circuit, the other end of the oil pump motor M2 is connected with an oil outlet pipeline, a monitoring device for detecting oil flow and feeding back an oil flow signal is arranged at the oil outlet pipeline, and the monitoring device is connected with the control main circuit. The utility model discloses guarantee bucket wheel motor under the condition that has lubricating oil and start, guarantee the life of bucket wheel motor, reduce gear reduction box's maintenance duration and cost.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment, more specifically say, relate to a bucket wheel reducing gear box protection system.
Background
The stacker-reclaimer is used for supplying work outside a wharf field, the whole external supply flow is completed by rotating a bucket wheel to take materials to a cantilever adhesive tape machine through a bucket wheel and then completing the whole external supply flow through an adhesive tape machine process system, an oil supply system of a bucket wheel reduction gearbox in the stacker-reclaimer in the prior art supplies oil (motor-gear pump-bucket wheel box lubrication points) through an independent system, and in the bucket wheel operation process, lubricating oil in the reduction gearbox is pumped to the reduction gearbox lubrication points through an oil pipe by a gear pump and is poured on each operation part of the box body, and the circulation is repeated, so that the stable operation of the reduction gearbox is realized. When the bucket-wheel stacker-reclaimer supplies and reclaims materials outside, because the oil leakage of the reduction gearbox, the damage of the oil pipe, the faults of the oil pump motor and the gear pump, the lubrication points of the reduction gearbox are not lubricated and cooled by lubricating oil, especially the high-speed shaft is not lubricated and can be burnt in a short time, and the replacement needs a day. Due to the characteristic of piling varieties in a yard, sometimes a certain stacker-reclaimer is required to be used for external supply, and at the moment, if the bucket-wheel reduction gearbox fails, the length of the parking time directly influences the production benefit and the satisfaction degree of customers.
Corresponding improvement is also carried out aiming at the problems, for example, Chinese patent application No. CN201621194981.9, the publication date is 2017, 5, month and 10, the patent discloses a novel intelligent lubricating system of a bucket-wheel stacker reclaimer, the main control system is connected with a filter, and the main control system outputs control signals to control the actions of an electromagnetic oil feeder, an oil filling tank and a lubricating pump; the upper computer is connected with the filter and is in communication connection with the master control system to monitor the master control system; the oiling tank is connected with the lubricating pump and is used for supplying lubricating grease to the lubricating pump under the control of the main control system; the lubricating pump is connected with the oil inlet end of the oil way main pipe and conveys oil to the oil way main pipe under the control of the main control system; the oil outlet end of the oil way main pipe is connected with a plurality of lubricating points, and oil is conveyed to each lubricating point through the oil way main pipe; the oil circuit is provided with an electromagnetic oil feeder, the oil circuits are arranged between the filter and the lubricating points, and the electromagnetic oil feeder controls the oil supply quantity of the lubricating points under the control of the main control system. The disadvantages of the patent are that: although the bucket-wheel stacker-reclaimer can be well lubricated, the bucket-wheel stacker-reclaimer still continues to work when a lubricating system fails, and the damage is great.
Also like chinese patent application No. CN201020157379.4, published as 2010, 10 and 27, this patent discloses a protector for protecting oil loss of a speed reducer of a bucket-wheel stacker-reclaimer, which comprises a main motor control circuit and a pressure relay arranged on an oil path for oil delivery from an oil pump to the speed reducer, wherein the pressure relay is connected with the main motor control circuit. The utility model discloses a set up pressure relay on the oil circuit of oil pump to reduction gear oil delivery, when the oil pressure in the input reduction gear reduces, through pressure relay and the main motor bring to rest of main motor control circuit control drive reduction gear to the protection reduction gear has avoided the reduction gear to be in the oil-out state completely and has continued to rotate and take place wearing and tearing. The disadvantages of the patent are that: the pressure relay needs to set a pressure value firstly, and the pressure value is difficult to determine in the field condition, so that errors are easy to occur, and the main motor of the speed reducer stops under the normal condition.
Disclosure of Invention
1. Problems to be solved
Poor bucket wheel motor fragile, the inconvenient problem of maintenance that leads to of lubricated effect in to prior art bucket wheel reducing gear box, the utility model provides a bucket wheel reducing gear box protection system. The utility model discloses can guarantee that bucket wheel motor starts under the condition that each equipment of gear reduction box has lubricating oil, effectively guarantee the life of bucket wheel motor, and each equipment all obtains lubricating in the reducing gear box, reduces gear reduction box's maintenance duration and cost then.
2. Technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
A bucket wheel reduction box protection system comprises a bucket wheel motor M1, a bucket wheel motor M1 is connected with a bucket wheel main contactor KM1, a bucket wheel main contactor KM1 is connected with a bucket wheel breaker OA, and the bucket wheel breaker OA is connected with a control main circuit; the oil pump motor is characterized by further comprising an oil pump motor M2, one end of the oil pump motor M2 is connected with an oil pump main contactor KM2, the oil pump main contactor KM2 is connected with a main circuit breaker OA1, the main circuit breaker OA1 is connected with a control main circuit, the other end of the oil pump motor M2 is connected with an oil outlet pipeline, a monitoring device for detecting oil flow and feeding back oil flow signals is arranged at the oil outlet pipeline, and the monitoring device is connected with the control main circuit. Effectively guarantee bucket wheel motor's life, and each equipment in the reducing gear box all obtains lubricating, reduces gear reducer box's maintenance duration and cost then.
Further, the main control circuit comprises a live line L1, a live line L1 is connected with one end of a main breaker OA1, the other end of the main breaker OA1 is connected with one end of an oil flow relay K1, the other end of the oil flow relay K1 is connected with one end of an oil flow main contactor KM1, and the other end of the oil flow main contactor KM1 is connected with a neutral line N of the main control circuit.
Furthermore, the monitoring device is an oil flow annunciator which comprises a shell, wherein an oil inlet and an oil outlet are respectively formed in two sides of the shell, a valve core is arranged in the shell and connected with a proximity switch K3, and the valve core is connected with a pointer through a conversion mechanism. The oil flow annunciator has a simple structure and a sensitive monitoring function.
Further, one end of the proximity switch K3 is connected to the main breaker OA1, the other end of the proximity switch K3 is connected to one end of the oil flow relay K1, and the other end of the oil flow relay K1 is connected to the neutral line N that controls the main circuit.
Furthermore, the oil flow relay further comprises an alarm, wherein the alarm is connected with the proximity switch K3 in parallel, one end of the alarm is connected with the main breaker OA1, and the other end of the alarm is connected with the oil flow relay K1. And timely alarming to remind workers.
Furthermore, an observation window is arranged on the shell of the oil flow annunciator, a sealing cover is arranged on the observation window, and a pointer is arranged in the observation window. The deflection condition of the pointer can be conveniently and visually seen, and the arrangement of the sealing cover effectively ensures that the pointer is not interfered by the external environment.
Furthermore, sealing rings are arranged between the observation window and the shell and between the proximity switch K3 and the shell. The observation window and the proximity switch can work normally.
Furthermore, the sealing ring is an O-shaped sealing ring. Simple structure and good sealing performance.
Further, the oil pump further comprises a protector, and the protector is connected with the oil pump motor M2. The oil pump motor M2 is protected.
Furthermore, a protective cover is arranged above the protector. The service life of the protector is prolonged.
3. Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses a set up two circuits with bucket-wheel motor and oil pump motor alone and then be connected with the control main circuit, changed in the past with oil pump motor parallelly connected on bucket-wheel motor's three-phase power supply, effectively avoided in the past because oil pump motor and bucket-wheel motor connect in parallel both power difference too big, the state of oil pump motor has hardly influence to bucket-wheel motor operation, make bucket-wheel motor continue to work when oil pump motor takes place to damage and then damage the reducing gear box; the oil outlet pipeline connected with the oil pump motor is provided with a monitoring device which monitors and feeds back an oil flow signal, when a problem occurs, the main circuit is fed back and controlled in time, and the main circuit is controlled to further control the oil pump motor and the bucket wheel motor to stop working, so that the whole process is simple to operate and convenient to control;
(2) the utility model discloses well monitoring devices is the oil flow annunciator, oil flow annunciator simple structure, and have sensitive monitoring function, it includes the shell, the case and the proximity switch K3 of shell inside are connected, and the case passes through the shifter and is connected with the pointer, when oil outlet pipe department has oil to pass through, the case rotates and drives proximity switch K3 through the shifter and makes proximity switch K3 become the normal close point, then feed back to control main circuit oil flow signal, and can see the oil flow signal directly perceived through the pointer deflection;
(3) the utility model discloses be connected proximity switch K3's one end and main circuit breaker OA1, proximity switch K3's the other end is connected with the one end of the relay K1 of oil stream, the other end of the relay K1 of oil stream is connected with the zero line N of control main circuit, only when having the oil stream outdated in the oil outlet pipeline, proximity switch K3 becomes the normal close point, the relay K1 of oil stream can only get the electricity thereby drive bucket wheel owner contactor KM1 drive then bucket wheel motor M1 drives, guaranteed only when have lubricating oil to flow through bucket wheel motor M1 behind each lubricating point in the reducing gear box in the oil outlet pipeline just to begin to operate, effectively avoided bucket wheel motor M1 to move under the lubricated condition of whole reducing gear box lack, improve the life of bucket wheel motor M1 and reducing gear box;
(4) the utility model discloses a parallelly connected with proximity switch K3 with the alarm, make can report to the police when the oil flow annunciator breaks down, in time remind the staff to maintain or change, monitor the oil flow annunciator in real time, improved the security of whole working process, and be convenient for observe;
(5) the utility model discloses be provided with the observation window on the oil stream signal ware shell, and be provided with sealed lid on the observation window, be provided with the pointer in the observation window, the pointer is placed in the observation window and is provided with sealed lid on the observation window, on the one hand plays the guard action to the pointer, has avoided the pointer to receive the external influence to receive the damage; on the other hand, the external dust or other particle interferent is prevented from entering the observation window, and the good sealing effect is achieved;
(6) the utility model is provided with the sealing rings between the contact surface of the observation window and the shell, and between the approach switch K3 and the shell, and is dustproof and sealed, so that the observation window and the approach switch K3 can work normally and are not interfered by the outside, and the accuracy and the sealing performance of the whole process are improved; the sealing ring is an O-shaped sealing ring, so that the structure is simple, the installation and the disassembly are convenient, and the sealing performance is good;
(7) the utility model has the advantages that the protector is connected with the oil pump motor M2, the protector has the protection functions of overload, phase loss and the like, and when the oil pump motor M2 breaks down, the oil pump motor M2 can be stopped in time, thereby playing a protection role for the oil pump motor M2; and a protective cover is arranged above the protector, so that the interference in the external environment is prevented from entering the protector to influence the normal work of the protector.
Drawings
FIG. 1 is a schematic diagram of a bucket-wheel motor and an oil pump motor in the prior art;
FIG. 2 is a schematic view of the connection between the bucket wheel motor and the oil pump motor according to the present invention;
FIG. 3 is a control circuit diagram of the present invention;
fig. 4 is a control circuit diagram of the bucket wheel motor of the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments and drawings.
Example 1
As shown in fig. 1, in the original bucket-wheel reduction gearbox, an oil pump motor power supply is connected in parallel to a bucket-wheel motor three-phase power supply line, the oil pump motor has no control line, and when the bucket-wheel motor is a high-power motor, generally 75KW or 90KW, the oil pump motor is only 0.55KW, and because the power difference between the oil pump motor and the bucket-wheel motor is too large, the influence on the bucket-wheel motor and a circuit thereof is very little when the oil pump motor fails, which causes the frequent damage of the oil pump motor and the damage of the reduction gearbox;
the utility model provides a bucket wheel reducing gear box protection system, as shown in fig. 2, including bucket wheel motor M1, bucket wheel motor M1 is connected with bucket wheel main contactor KM1, bucket wheel main contactor KM1 is connected with bucket wheel breaker OA, bucket wheel breaker OA is connected with the control main circuit; the oil pump control system is characterized by further comprising an oil pump motor M2, one end of the oil pump motor M2 is connected with an oil pump main contactor KM2, an oil pump main contactor KM2 is connected with a main circuit breaker OA1, a main circuit breaker OA1 is connected with a control main circuit, the other end of the oil pump motor M2 is connected with an oil outlet pipeline, a monitoring device for detecting oil flow and feeding back an oil flow signal is arranged at the oil outlet pipeline, and the monitoring device is connected with the control main circuit; the utility model discloses lay a main circuit respectively with oil pump motor M2 and bucket wheel motor M1, be connected with the control main circuit respectively, it is too big effectively to have avoided connecting in parallel because of oil pump motor and bucket wheel motor in the past, the state of oil pump motor has hardly influenced bucket wheel motor operation, make bucket wheel motor continue work and then damage the reducing gear box when oil pump motor takes place to damage, and be provided with monitoring devices at the oil outlet pipe department of being connected with oil pump motor M2, this monitoring devices carries out a control and feedback to the oil flow signal, when the problem appears, feedback control main circuit in time, the control main circuit and then control oil pump motor M2 and bucket wheel motor M1 stop work, whole process operation is simple, and convenient control; preferably, the protection device further comprises a protector, the protector is connected with the oil pump motor M2, the protector has protection functions of overload, phase loss and the like, and when the oil pump motor M2 fails, the oil pump motor M2 can be timely stopped to work, so that the protection device plays a role in protecting the oil pump motor M2; furthermore, a protective cover is arranged above the protector, so that the interference objects in the external environment are prevented from entering the protector to influence the normal work of the protector.
As shown in fig. 3, more specifically, the main control circuit comprises a live line L1, the live line L1 is connected with one end of a main breaker OA1, the other end of the main breaker OA1 is connected with one end of an oil flow relay K1 and one end of a normally closed contact K2 in the protector, the other end of the oil flow relay K1 is connected with one end of an arm main contactor KM1, and the other end of the arm main contactor KM1 is connected with a neutral line N of the main control circuit; the other end of a normally closed electric shock K2 in the protector is connected with one end of an oil pump main contactor KM2, and the other end of the oil pump main contactor KM2 is connected with a zero line N of a control main circuit; when the bucket wheel output relay KA is closed, the oil pump main contactor KM2 is closed, the oil pump motor runs, lubricating oil flows through a lubricating oil pipeline at a certain flow rate, the monitoring device feeds an oil flow signal back to the control main circuit, the control main circuit controls the bucket wheel main contactor KM1 to be closed, and then the bucket wheel motor M1 is started; the reduction gearbox can not run under the condition of oil-free lubrication and cooling, so that the oil pump motor M2 is guaranteed to run first and then drive the bucket wheel motor M1 to run, and lubricating oil passes through all lubricating points in the reduction gearbox; and under the condition that the reduction gearbox is lack of oil or the oil pump motor is damaged or the circuit has a problem, the bucket wheel motor cannot be started, and the service life of the reduction gearbox is effectively prolonged.
Example 2
Basically as in example 1, preferably, the monitoring device is an oil flow annunciator, which has a simple structure and a sensitive monitoring function; the oil flow annunciator comprises a shell, wherein an oil inlet and an oil outlet are respectively formed in two sides of the shell, a valve core is arranged in the shell and connected with a proximity switch K3, the valve core is connected with a pointer through a conversion mechanism, as shown in FIG. 4, one end of the proximity switch K3 is connected with a main circuit breaker OA1, the other end of the proximity switch K3 is connected with one end of an oil flow relay K1, and the other end of the oil flow relay K1 is connected with a zero line N for controlling the main circuit. When the bucket wheel output relay KA is closed, the oil pump main contactor KM2 is closed, the oil pump motor M2 runs, lubricating oil flows through a lubricating oil pipeline at the moment and flows at a certain flow rate, the valve core in the oil flow annunciator drives the proximity switch K3 through the switching mechanism, so that the proximity switch K3 becomes a normally closed point, the oil flow relay K1 is electrified, and then the bucket wheel main contactor KM1 is closed finally, and the bucket wheel motor runs; when the reduction gearbox leaks oil or the oil pipe leaks oil, breaks and the gear pump is damaged, so that the oil shortage is caused in the reduction gearbox, the flow rate of the oil in the oil pipe cannot be reached or no oil passes through, the oil flow relay K1 does not act when the approach switch K3 in the oil flow annunciator does not act, the bucket wheel motor M1 cannot run when the bucket wheel main contactor KM2 cannot be powered on, the reduction gearbox cannot run in an oil shortage state, the protection effect is achieved, and similarly, in the running process, the bucket wheel motor M1 can also stop in time if the situation occurs; the operation of the oil pump motor and then the operation of the bucket wheel motor are effectively ensured, so that lubricating oil passes through all lubricating points in the reduction gearbox; under the condition that the reduction gearbox is lack of oil or the oil pump motor is damaged or the circuit is in trouble, the bucket wheel motor cannot be started, and the service life of the reduction gearbox is effectively prolonged; other monitoring devices that can play the detection oil stream and feed back the oil stream signal all can be used in the utility model discloses in.
The faults of the high-speed shaft of the bucket-wheel speed reducer are counted in a certain port within two years, and are shown in a table 1:
TABLE 1
When using bucket-wheel reducing gear box protection system after, make statistics of the trouble of bucket-wheel reducing gear box high-speed axle in two years, see table 2:
TABLE 2
After the data contrast of table 1 and table 2, the utility model discloses can reduce nearly 80% trouble and cost, especially down time's reduction, greatly increased equipment input time on production, provide the guarantee for getting bigger benefit, improve customer's satisfaction. Still further, still include the alarm, the alarm is parallelly connected with proximity switch K3, and alarm one end is connected with main circuit breaker OA1, and the other end is connected with oil flow relay K1 for can report to the police when the oil flow annunciator breaks down, in time remind the staff to maintain or change, real-time supervision oil flow annunciator has improved the security of whole working process, and is convenient for observe.
Example 3
Basically as in embodiment 2, preferably, the casing of the oil flow annunciator is provided with an observation window, the observation window is provided with a sealing cover, the observation window is internally provided with a pointer, and the arrangement of the observation window and the sealing cover plays a role in protecting the pointer on one hand, so that the pointer is prevented from being damaged by external influence; on the other hand, the external dust or other particle interferent is prevented from entering the observation window, and the good sealing effect is achieved; sealing rings are arranged between the observation window and the shell and between the proximity switch K3 and the shell, and are dustproof and sealed, so that the observation window and the proximity switch K3 can work normally and are not interfered by dust or particles in the external environment; the sealing ring is an O-shaped sealing ring, the structure is simple, the installation and the disassembly are convenient, the sealing performance is good, and the cost performance is high.
The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.
Claims (10)
1. The utility model provides a bucket wheel reducing gear box protection system which characterized in that: the device comprises a bucket-wheel motor M1, a bucket-wheel motor M1 is connected with a bucket-wheel main contactor KM1, a bucket-wheel main contactor KM1 is connected with a bucket-wheel breaker OA, and the bucket-wheel breaker OA is connected with a control main circuit; the oil pump motor is characterized by further comprising an oil pump motor M2, one end of the oil pump motor M2 is connected with an oil pump main contactor KM2, the oil pump main contactor KM2 is connected with a main circuit breaker OA1, the main circuit breaker OA1 is connected with a control main circuit, the other end of the oil pump motor M2 is connected with an oil outlet pipeline, a monitoring device for detecting oil flow and feeding back oil flow signals is arranged at the oil outlet pipeline, and the monitoring device is connected with the control main circuit.
2. The bucket wheel reduction gearbox protection system of claim 1, wherein: the main control circuit comprises a live line L1, a live line L1 is connected with one end of a main breaker OA1, the other end of the main breaker OA1 is connected with one end of an oil flow relay K1, the other end of the oil flow relay K1 is connected with one end of an bucket wheel main contactor KM1, and the other end of the bucket wheel main contactor KM1 is connected with a zero line N of the main control circuit.
3. The bucket wheel reduction gearbox protection system of claim 2, wherein: the monitoring device is an oil flow annunciator which comprises a shell, wherein an oil inlet and an oil outlet are respectively formed in the two sides of the shell, a valve core is arranged in the shell, the valve core is connected with a proximity switch K3, and the valve core is connected with a pointer through a conversion mechanism.
4. The bucket wheel reduction gearbox protection system of claim 3, wherein: one end of the proximity switch K3 is connected to the main breaker OA1, the other end of the proximity switch K3 is connected to one end of the oil flow relay K1, and the other end of the oil flow relay K1 is connected to the neutral line N that controls the main circuit.
5. The bucket wheel reduction gearbox protection system of claim 4, wherein: the oil flow relay switch further comprises an alarm, the alarm is connected with the proximity switch K3 in parallel, one end of the alarm is connected with the main breaker OA1, and the other end of the alarm is connected with the oil flow relay K1.
6. The bucket wheel reduction gearbox protection system of claim 3, wherein: an observation window is arranged on the shell of the oil flow annunciator, a sealing cover is arranged on the observation window, and a pointer is arranged in the observation window.
7. The bucket wheel reduction gearbox protection system of claim 6, wherein: and sealing rings are arranged between the observation window and the shell and between the proximity switch K3 and the shell.
8. The bucket wheel reduction gearbox protection system of claim 7, wherein: the sealing ring is an O-shaped sealing ring.
9. The bucket wheel reduction gearbox protection system of claim 1, wherein: the oil pump motor M2 is connected with the protector.
10. The bucket wheel reduction gearbox protection system of claim 9, wherein: a protective cover is arranged above the protector.
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| CN201920800118.0U CN209939927U (en) | 2019-05-29 | 2019-05-29 | Bucket wheel reduction box protection system |
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| CN201920800118.0U CN209939927U (en) | 2019-05-29 | 2019-05-29 | Bucket wheel reduction box protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111532142A (en) * | 2020-02-29 | 2020-08-14 | 中国煤炭科工集团太原研究院有限公司 | Electro-hydraulic control automatic clutch device for coal mine electric engineering vehicle |
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2019
- 2019-05-29 CN CN201920800118.0U patent/CN209939927U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111532142A (en) * | 2020-02-29 | 2020-08-14 | 中国煤炭科工集团太原研究院有限公司 | Electro-hydraulic control automatic clutch device for coal mine electric engineering vehicle |
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