CN219750961U - Power switch device of coal conveying belt conveyor and coal conveying belt conveyor - Google Patents

Abstract

The utility model relates to a power switch device of a coal conveying belt conveyor and the coal conveying belt conveyor, wherein the power switch device is applied to the coal conveying belt conveyor, the coal conveying belt conveyor comprises a first conveying belt, a second conveying belt, a third conveying belt and a fourth conveying belt, and the power switch device comprises: a first power switch disposed on the motor control loop of the first conveyor belt; and the second power switch is arranged on the motor control loop of the second conveyor belt. The motor control loop of the first conveyor belt and the motor control loop of the second conveyor belt are mutually independent and do not affect each other or interfere each other, so that the power switch is prevented from being started by mistake, the frequency of the false start of the motor of the coal conveying belt conveyor is reduced, and the potential safety hazard caused by the fact that the motor control loops are not mutually independent in the using process of the equipment is eliminated.

Description

Power switch device of coal conveying belt conveyor and coal conveying belt conveyor

Technical Field

The utility model relates to the technical field of coal conveying belt conveyors, in particular to a power supply switching device of a coal conveying belt conveyor and the coal conveying belt conveyor.

Background

The power switch of the coal conveying belt conveyor is responsible for starting the motor and selecting the steering of the motor, then the motor drives the driving roller to rotate through a high-speed coupler (a hydraulic coupler) and a low-speed coupler (an elastic pin tooth coupler), so that the two purposes of taking coal from a source and conveying the coal to a destination are realized, the coal is taken from the source, namely, the coal is taken from the source, and the corresponding switches at the head and the tail need to be switched on; the coal is sent to a destination, namely, the stacking is carried out, the corresponding switches at the head and the tail are also required to be switched on, and the power switch is required to be started and stopped every time for stacking and taking materials, so that the operation is very frequent. Therefore, the flexibility and reliability requirements for automation and remote operation are very high, and the selection of the power switch is also very important.

The coal conveying belt machine adopts a traditional power switch, and mainly has the following problems:

(1) the switch control loops are not independent. Fig. 1 shows a circuit diagram of a switching-on loop of a switch of a coal conveying belt conveyor, and the control loops of 4 switches can be found to be independent from each other according to fig. 1, so that the power switch can be started by mistake and mutually interfere with each other, and then a safety problem is caused.

(2) The two loops of alternating current and direct current share one cable, and through the switch control loop of the existing coal conveying belt conveyor motor shown in fig. 2, 1 four-core cable is shared by the two loops, so that alternating current interference can be carried out on the switch control loop, false starting operation of a power switch can be caused to a certain extent, and besides, the alternating current and direct current mixed interference can also influence the fault self-processing capacity of the coal conveying belt conveyor.

Disclosure of Invention

In view of the above problems, the utility model provides a power switch device of a coal conveying belt conveyor and the coal conveying belt conveyor, which solve the problems that the control loops of a plurality of motors of the existing coal conveying belt conveyor adopt one power switch to ensure that the switch control loops are mutually independent, so that the power switch is easily started by mistake, and the switch control loops are mutually interfered to cause potential safety hazards.

To achieve the above object, the present inventors provide a power switching device for a coal conveyor, the power switching device being applied to a coal conveyor including a first conveyor belt, a second conveyor belt, a third conveyor belt, and a fourth conveyor belt, the power switching device comprising:

a first power switch disposed on the motor control loop of the first conveyor belt;

and the second power switch is arranged on the motor control loop of the second conveyor belt.

In some embodiments, the motor control loop of the first conveyor belt comprises a first closing coil and a first closing switch, one end of the first closing coil is connected to a direct current power supply, the other end of the first closing coil is connected to an input end of the first power switch, and an output end of the first power switch is connected to an engine of the first conveyor belt through the first closing switch;

the motor control loop of the second conveyor belt comprises a second closing coil and a second closing switch, one end of the second closing coil is connected to a direct-current power supply, the other end of the second closing coil is connected to the input end of the second power switch, and the output end of the second power switch is connected to an engine of the second conveyor belt through the second closing switch.

In some embodiments, further comprising:

a third power switch disposed on the motor control loop of the third conveyor belt;

and a fourth power switch disposed on the motor control loop of the fourth conveyor belt.

In some embodiments, the motor control loop of the third conveyor belt comprises a third switching-on coil and a third switching-on switch, one end of the third switching-on coil is connected to the direct current power supply, the other end of the third switching-on coil is connected to the input end of the third power switch, and the output end of the third power switch is connected to the motor of the third conveyor belt through the third switching-on switch;

the motor control loop of the fourth conveyor belt comprises a fourth switching-on coil and a fourth switching-on switch, one end of the fourth switching-on coil is connected to a direct-current power supply, the other end of the fourth switching-on coil is connected to the input end of the fourth power switch, and the output end of the fourth power switch is connected to an engine of the fourth conveyor belt through the fourth switching-on switch.

Still provide another technical scheme, a coal conveyor belt, coal conveyor belt includes power switch device, first conveyer, second conveyer, third conveyer and fourth conveyer, power switch device includes:

a first power switch disposed on the motor control loop of the first conveyor belt;

and the second power switch is arranged on the motor control loop of the second conveyor belt.

In some embodiments, the motor control loop of the first conveyor belt comprises a first closing coil and a first closing switch, one end of the first closing coil is connected to a direct current power supply, the other end of the first closing coil is connected to an input end of the first power switch, and an output end of the first power switch is connected to an engine of the first conveyor belt through the first closing switch;

the motor control loop of the second conveyor belt comprises a second closing coil and a second closing switch, one end of the second closing coil is connected to a direct-current power supply, the other end of the second closing coil is connected to the input end of the second power switch, and the output end of the second power switch is connected to an engine of the second conveyor belt through the second closing switch.

In some embodiments, the power switching device further comprises:

a third power switch disposed on the motor control loop of the third conveyor belt;

and a fourth power switch disposed on the motor control loop of the fourth conveyor belt.

In some embodiments, the motor control loop of the third conveyor belt comprises a third switching-on coil and a third switching-on switch, one end of the third switching-on coil is connected to the direct current power supply, the other end of the third switching-on coil is connected to the input end of the third power switch, and the output end of the third power switch is connected to the motor of the third conveyor belt through the third switching-on switch;

the motor control loop of the fourth conveyor belt comprises a fourth switching-on coil and a fourth switching-on switch, one end of the fourth switching-on coil is connected to a direct-current power supply, the other end of the fourth switching-on coil is connected to the input end of the fourth power switch, and the output end of the fourth power switch is connected to an engine of the fourth conveyor belt through the fourth switching-on switch.

Compared with the prior art, the coal conveying belt conveyor comprises the power switch device, the first conveying belt, the second conveying belt, the third conveying belt and the fourth conveying belt, the power switch device comprises the first power switch and the second power switch, the first power switch is arranged on the motor control loop of the first conveying belt, the second power switch is arranged on the motor control loop of the second conveying belt, the motor control loops of the first conveying belt and the motor control loops of the second conveying belt are mutually independent and do not mutually influence, mutual noninterfere is avoided, the power switch is further prevented from being started by mistake, the times of the false starting of the motor of the coal conveying belt conveyor is reduced, and potential safety hazards caused by the fact that the motor control loops are not mutually independent in the using process of equipment are eliminated.

The foregoing summary is merely an overview of the present utility model, and may be implemented according to the text and the accompanying drawings in order to make it clear to a person skilled in the art that the present utility model may be implemented, and in order to make the above-mentioned objects and other objects, features and advantages of the present utility model more easily understood, the following description will be given with reference to the specific embodiments and the accompanying drawings of the present utility model.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of the present utility model and are not to be construed as limiting the utility model.

In the drawings of the specification:

FIG. 1 is a circuit diagram of a switch closing loop of a conventional coal conveying belt conveyor according to the background art;

FIG. 2 is a schematic circuit diagram of a switch control loop of a prior art coal conveyor motor;

FIG. 3 is a schematic structural view of a power switching device of a coal conveyor according to an embodiment;

fig. 4 is a schematic diagram of another structure of a power switch device of the coal conveyor according to the embodiment;

FIG. 5 is a schematic diagram of an improved motor control loop for a coal conveyor according to an embodiment;

fig. 6 is a schematic structural view of a coal conveyor belt according to an embodiment.

Reference numerals referred to in the above drawings are explained as follows:

100. a coal conveying belt conveyor;

110. a power switching device, which comprises a power supply,

111. a first power switch 112, a second power switch 113, a third power switch 114, a fourth power switch;

121. first conveyor belt 122, second conveyor belt 123, third conveyor belt 124, fourth conveyor belt.

Detailed Description

In order to describe the possible application scenarios, technical principles, practical embodiments, and the like of the present utility model in detail, the following description is made with reference to the specific embodiments and the accompanying drawings. The embodiments described herein are only for more clearly illustrating the technical aspects of the present utility model, and thus are only exemplary and not intended to limit the scope of the present utility model.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of the phrase "in various places in the specification are not necessarily all referring to the same embodiment, nor are they particularly limited to independence or relevance from other embodiments. In principle, in the present utility model, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment may be combined in any manner to form a corresponding implementable technical solution.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present utility model pertains; the use of related terms herein is for the purpose of describing particular embodiments only and is not intended to limit the utility model.

In the description of the present utility model, the term "and/or" is a representation for describing a logical relationship between objects, which means that three relationships may exist, for example a and/or B, representing: there are three cases, a, B, and both a and B. In addition, the character "/" herein generally indicates that the front-to-back associated object is an "or" logical relationship.

In the present utility model, terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual number, order, or sequence of such entities or operations.

Without further limitation, the use of the terms "comprising," "including," "having," or other like terms in this specification is intended to cover a non-exclusive inclusion, such that a process, method, or article of manufacture that comprises a list of elements does not include additional elements but may include other elements not expressly listed or inherent to such process, method, or article of manufacture.

As in the understanding of "review guidelines," the expressions "greater than", "less than", "exceeding" and the like are understood to exclude this number in the present utility model; the expressions "above", "below", "within" and the like are understood to include this number. Furthermore, in the description of embodiments of the present utility model, the meaning of "a plurality of" is two or more (including two), and similarly, the expression "a plurality of" is also to be understood as such, for example, "a plurality of" and the like, unless specifically defined otherwise.

In the description of embodiments of the present utility model, spatially relative terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," etc., are used herein as a basis for the description of the embodiments or as a basis for the description of the embodiments, and are not intended to indicate or imply that the devices or components referred to must have a particular position, a particular orientation, or be configured or operated in a particular orientation and therefore should not be construed as limiting the embodiments of the present utility model.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "affixed," "disposed," and the like as used in the description of embodiments of the utility model should be construed broadly. For example, the "connection" may be a fixed connection, a detachable connection, or an integral arrangement; the device can be mechanically connected, electrically connected and communicated; it can be directly connected or indirectly connected through an intermediate medium; which may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the embodiments of the present utility model can be understood by those skilled in the art to which the present utility model pertains according to circumstances.

The power switch is to control the switch tube to conduct and cut off at high speed through the circuit, and meanwhile, the direct current is converted into high-frequency alternating current.

Referring to fig. 3, the present embodiment provides a power switch device 110 of a coal conveying belt machine, the power switch device 110 is applied to the coal conveying belt machine, the coal conveying belt machine includes a first conveying belt, a second conveying belt, a third conveying belt and a fourth conveying belt, and the power switch device 110 includes:

a first power switch 111, the first power switch 111 being provided on a motor control loop of the first conveyor belt;

a second power switch 112, said second power switch 112 being arranged on the motor control loop of the second conveyor belt.

The coal conveying belt conveyor comprises a power switch device 110, a first conveying belt, a second conveying belt, a third conveying belt and a fourth conveying belt, wherein the power switch device 110 comprises a first power switch 111 and a second power switch 112, the first power switch 111 is arranged on a motor control loop of the first conveying belt, and the second power switch 112 is arranged on a motor control loop of the second conveying belt, so that the motor control loops of the first conveying belt and the second conveying belt are mutually independent, do not influence each other and do not interfere each other, the power switch is prevented from being started by mistake, the frequency of the false starting of a motor of the coal conveying belt conveyor is reduced, and the potential safety hazard caused by the fact that the motor control loops are not mutually independent in the using process of equipment is eliminated.

Referring to fig. 4, in some embodiments, the method further includes:

a third power switch 113, the third power switch 113 being disposed on a motor control loop of the third conveyor belt;

a fourth power switch 114, said fourth power switch 114 being arranged on the motor control loop of the fourth conveyor belt.

Through setting up third switch 113 in the motor control circuit of third conveyer, set up fourth switch 114 in the motor control circuit of fourth conveyer for the independence of alternating current loop and direct current loop self-checking avoids alternating current-direct current to mix the interference, further reduces switch's mistake and starts, has improved the trouble self-handling ability of coal conveyor.

Referring to the improved motor control loop of the coal conveyor shown in fig. 5, in some embodiments, the motor control loop of the first conveyor belt includes a first closing coil TX1 and a first closing switch, one end of the first closing coil TX1 is connected to a dc power supply, the other end of the first closing coil TX1 is connected to an input end of a first power switch 111, and an output end of the first power switch 111 is connected to an engine of the first conveyor belt through the first closing switch;

the motor control loop of the second conveyor belt comprises a second closing coil TX2 and a second closing switch, one end of the second closing coil TX2 is connected to a direct-current power supply, the other end of the second closing coil TX2 is connected to the input end of a second power switch 112, and the output end of the second power switch 112 is connected to an engine of the second conveyor belt through the second closing switch.

When the motor of the first conveyor belt is required to work, the first power switch 111 is closed, then the direct current power supply is input to the first power switch 111 after passing through the first switching-on coil TX1, and after the first power switch 111 converts direct current into alternating current, the alternating current is input to the motor of the first conveyor belt through the first switching-on switch, so that the motor of the first conveyor belt works; when the motor of the first conveyor is required to stop, only the first power switch 111 is required to be turned off, the first closing coil TX1 is powered off, and meanwhile the first closing switch is turned off, so that the motor of the first conveyor is stopped. Similarly, when the motor of the second conveyor belt is required to work, the second power switch 112 is closed, then the direct current power supply is input to the second power switch 112 after passing through the second switching-on coil TX2, and after the second power switch 112 converts direct current into alternating current, the alternating current is input to the motor of the second conveyor belt through the second switching-on switch, so that the motor of the second conveyor belt works; when the motor of the second conveyor belt is required to stop, only the second power switch 112 is required to be turned off, the second closing coil TX2 is powered off, and meanwhile the second closing switch is turned off, so that the motor of the second conveyor belt is stopped.

Referring to the improved motor control loop of the coal conveyor shown in fig. 5, in some embodiments, the motor control loop of the third conveyor belt includes a third switching-on coil TX3 and a third switching-on switch, one end of the third switching-on coil TX3 is connected to a dc power supply, the other end of the third switching-on coil TX3 is connected to an input end of the third power switch 113, and an output end of the third power switch 113 is connected to an engine of the third conveyor belt through the third switching-on switch;

the motor control loop of the fourth conveyor belt comprises a fourth switching-on coil TX4 and a fourth switching-on switch, one end of the fourth switching-on coil TX4 is connected to a direct current power supply, the other end of the fourth switching-on coil TX4 is connected to the input end of the fourth power switch 114, and the output end of the fourth power switch 114 is connected to the engine of the fourth conveyor belt through the fourth switching-on switch.

When the motor of the third conveyor belt is required to work, the third power switch 113 is closed, then the direct current power supply is input to the third power switch 113 after passing through the third switching-on coil TX3, and after the third power switch 113 converts direct current into alternating current, the alternating current is input to the motor of the third conveyor belt through the third switching-on switch, so that the motor of the third conveyor belt works; when the motor of the third conveyor belt is required to stop, only the third power switch 113 is required to be turned off, the third closing coil TX3 is powered off, and meanwhile the third closing switch is turned off, so that the motor of the third conveyor belt is stopped. Similarly, when the motor of the fourth conveyor belt is required to work, the fourth power switch 114 is closed, then the direct current power is input to the fourth power switch 114 after passing through the fourth switching-on coil TX4, and after the fourth power switch 114 converts direct current into alternating current, the alternating current is input to the motor of the fourth conveyor belt through the fourth switching-on switch, so that the motor of the fourth conveyor belt works; when the motor of the fourth conveyor belt is required to stop, only the fourth power switch 114 is required to be turned off, the fourth switching-on coil TX4 is powered off, and the fourth switching-on switch is turned off, so that the motor of the fourth conveyor belt is stopped.

By reforming the power switch, as shown in fig. 5, it can be found by comparing the circuit diagrams before and after reforming that the power switch is added at different working positions or disconnection positions to ensure the independence of each switch control circuit, and in fig. 5, the power switches are respectively added at TX1 and TX2 to ensure the independence of tripping circuits of the motor switches, so that the motor switches are not mutually influenced and mutually not interfered; the addition of power switches at the TX3, TX4 positions in fig. 5 ensures the independence of the ac-dc loop.

The AC/DC loops are separated respectively, and each cable is used for ensuring the fault-free transmission, and simultaneously improving the fault self-processing capability of the motor.

Through carrying out electric transformation to traditional switch, be applied to on the coal conveyor belt with modified switch, solved the problem that traditional switch's belt feeder coal conveying in-process exists, reduced the number of times that the motor was started by mistake, improved the trouble self-handling ability of coal conveyor simultaneously, eliminated the potential safety hazard of equipment use then, have certain realistic meaning.

Referring to fig. 6 and 3, in another embodiment, a coal conveyor 100 includes a power switch device 110, a first conveyor belt 121, a second conveyor belt 122, a third conveyor belt 123 and a fourth conveyor belt 124, wherein the power switch device 110 includes:

a first power switch 111, the first power switch 111 being provided on a motor control circuit of the first conveyor belt 121;

a second power switch 112, said second power switch 112 being arranged on the motor control loop of the second conveyor belt 122.

In some embodiments, the motor control loop of the first conveyor belt 121 includes a first switch-on coil and a first switch-on switch, one end of the first switch-on coil is connected to the dc power supply, the other end of the first switch-on coil is connected to the input end of the first power switch 111, and the output end of the first power switch 111 is connected to the motor of the first conveyor belt 121 through the first switch-on switch;

the motor control loop of the second conveyor belt 122 includes a second switch-on coil and a second switch-on switch, one end of the second switch-on coil is connected to the dc power supply, the other end of the second switch-on coil is connected to the input end of the second power switch 112, and the output end of the second power switch 112 is connected to the engine of the second conveyor belt 122 through the second switch-on switch.

The coal conveying belt conveyor comprises a power switch device 110, a first conveying belt 121, a second conveying belt 122, a third conveying belt 123 and a fourth conveying belt 124, wherein the power switch device 110 comprises a first power switch 111 and a second power switch 112, the first power switch 111 is arranged on a motor control loop of the first conveying belt 121, and the second power switch 112 is arranged on a motor control loop of the second conveying belt 122, so that the motor control loops of the first conveying belt 121 and the second conveying belt 122 are independent of each other and do not interfere with each other, the power switch is prevented from being started by mistake, the frequency of the false starting of a motor of the coal conveying belt conveyor is reduced, and potential safety hazards caused by the fact that the motor control loops are not independent of each other in the using process of equipment are eliminated.

Referring to fig. 4, in some embodiments, the method further includes:

a third power switch 113, the third power switch 113 being provided on a motor control circuit of the third conveyor belt 123;

a fourth power switch 114, said fourth power switch 114 being arranged on the motor control loop of the fourth conveyor belt 124.

Through setting up third switch 113 in the motor control circuit of third conveyer 123, set up fourth switch 114 in the motor control circuit of fourth conveyer 124 for the independence of alternating current loop and direct current loop self-checking, the mixed interference of alternating current-direct current is avoided, further reduces switch's mistake and starts, has improved the trouble self-handling ability of coal conveyor.

Referring to the improved motor control loop of the coal conveyor shown in fig. 5, in some embodiments, the motor control loop of the first conveyor belt 121 includes a first closing coil TX1 and a first closing switch, one end of the first closing coil TX1 is connected to a dc power supply, the other end of the first closing coil TX1 is connected to an input end of the first power switch 111, and an output end of the first power switch 111 is connected to an engine of the first conveyor belt 121 through the first closing switch;

the motor control loop of the second conveyor belt 122 includes a second switching-on coil TX2 and a second switching-on switch, one end of the second switching-on coil TX2 is connected to the dc power supply, the other end of the second switching-on coil TX2 is connected to the input end of the second power switch 112, and the output end of the second power switch 112 is connected to the motor of the second conveyor belt 122 through the second switching-on switch.

When the motor of the first conveyor belt 121 is required to work, the first power switch 111 is closed, then the direct current power is input to the first power switch 111 after passing through the first switching-on coil TX1, and after the first power switch 111 converts the direct current into the alternating current, the alternating current is input to the motor of the first conveyor belt through the first switching-on switch, so that the motor of the first conveyor belt 121 works; when the motor of the first conveyor belt 121 is required to stop, only the first power switch 111 is required to be turned off, the first closing coil TX1 is powered off, and meanwhile the first closing switch is turned off, so that the motor of the first conveyor belt 121 is stopped. Similarly, when the motor of the second conveyor belt 122 is required to work, the second power switch 112 is closed, the direct current power is input to the second power switch 112 after passing through the second switching-on coil TX2, and the second power switch 112 converts the direct current into alternating current and then inputs the alternating current to the motor of the second conveyor belt through the second switching-on switch, so that the motor of the second conveyor belt 122 works; when the motor of the second conveyor belt 122 is required to stop, only the second power switch 112 is required to be turned off, the second closing coil TX2 is powered off, and meanwhile, the second closing switch is turned off, so that the motor of the second conveyor belt 122 is stopped.

Referring to the improved motor control loop of the coal conveyor shown in fig. 5, in some embodiments, the motor control loop of the third conveyor belt 123 includes a third switching-on coil TX3 and a third switching-on switch, one end of the third switching-on coil TX3 is connected to the dc power supply, the other end of the third switching-on coil TX3 is connected to the input end of the third power switch 113, and the output end of the third power switch 113 is connected to the engine of the third conveyor belt 123 through the third switching-on switch;

the motor control circuit of the fourth conveyor belt 124 includes a fourth switching-on coil TX4 and a fourth switching-on switch, one end of the fourth switching-on coil TX4 is connected to the dc power supply, the other end of the fourth switching-on coil TX4 is connected to the input end of the fourth power switch 114, and the output end of the fourth power switch 114 is connected to the motor of the fourth conveyor belt 124 through the fourth switching-on switch.

When the motor of the third conveyor belt 123 is required to work, the third power switch 113 is closed, then the direct current power is input to the third power switch 113 after passing through the third switching-on coil TX3, and after the third power switch 113 converts the direct current into the alternating current, the alternating current is input to the motor of the third conveyor belt through the third switching-on switch, so that the motor of the third conveyor belt 123 works; when the motor of the third conveyor belt 123 is required to stop, only the third power switch 113 is required to be turned off, the third closing coil TX3 is powered off, and meanwhile the third closing switch is turned off, so that the motor of the third conveyor belt 123 is stopped. Similarly, when the motor of the fourth conveyor belt 124 is required to work, the fourth power switch 114 is turned on, the dc power is input to the fourth power switch 114 after passing through the fourth switching-on coil TX4, and the fourth power switch 114 converts the dc power into ac power and inputs the ac power to the motor of the fourth conveyor belt through the fourth switching-on switch, so that the motor of the fourth conveyor belt 124 works; when the motor of the fourth conveyor belt 124 is required to stop, only the fourth power switch 114 is required to be turned off, the fourth switching-on coil TX4 is powered off, and the fourth switching-on switch is turned off, so that the motor of the fourth conveyor belt 124 is stopped.

Finally, it should be noted that, although the embodiments have been described in the text and the drawings, the scope of the utility model is not limited thereby. The technical scheme generated by replacing or modifying the equivalent structure or equivalent flow by utilizing the content recorded in the text and the drawings of the specification based on the essential idea of the utility model, and the technical scheme of the embodiment directly or indirectly implemented in other related technical fields are included in the patent protection scope of the utility model.

Claims (8)

1. The utility model provides a power switch device of coal conveyor, power switch device is applied to coal conveyor, coal conveyor includes first conveyer, second conveyer, third conveyer and fourth conveyer, its characterized in that, power switch device includes:

a first power switch disposed on the motor control loop of the first conveyor belt;

and the second power switch is arranged on the motor control loop of the second conveyor belt.

2. The power switching device of a coal conveyor belt according to claim 1, wherein,

the motor control loop of the first conveyor belt comprises a first closing coil and a first closing switch, one end of the first closing coil is connected with a direct-current power supply, the other end of the first closing coil is connected with the input end of the first power switch, and the output end of the first power switch is connected with an engine of the first conveyor belt through the first closing switch;

the motor control loop of the second conveyor belt comprises a second closing coil and a second closing switch, one end of the second closing coil is connected to a direct-current power supply, the other end of the second closing coil is connected to the input end of the second power switch, and the output end of the second power switch is connected to an engine of the second conveyor belt through the second closing switch.

3. The power switching device of a coal conveyor belt as in claim 1 further comprising:

a third power switch disposed on the motor control loop of the third conveyor belt;

and a fourth power switch disposed on the motor control loop of the fourth conveyor belt.

4. The power switching device of a coal conveyor belt according to claim 3, wherein,

the motor control loop of the third conveyor belt comprises a third switching-on coil and a third switching-on switch, one end of the third switching-on coil is connected with a direct current power supply, the other end of the third switching-on coil is connected with the input end of the third power switch, and the output end of the third power switch is connected with an engine of the third conveyor belt through the third switching-on switch;

the motor control loop of the fourth conveyor belt comprises a fourth switching-on coil and a fourth switching-on switch, one end of the fourth switching-on coil is connected to a direct-current power supply, the other end of the fourth switching-on coil is connected to the input end of the fourth power switch, and the output end of the fourth power switch is connected to an engine of the fourth conveyor belt through the fourth switching-on switch.

5. The utility model provides a coal conveyor belt, coal conveyor belt includes power switch device, first conveyer, second conveyer, third conveyer and fourth conveyer, its characterized in that, power switch device includes:

a first power switch disposed on the motor control loop of the first conveyor belt;

and the second power switch is arranged on the motor control loop of the second conveyor belt.

6. The coal conveyor belt as in claim 5 wherein,

the motor control loop of the first conveyor belt comprises a first closing coil and a first closing switch, one end of the first closing coil is connected with a direct-current power supply, the other end of the first closing coil is connected with the input end of the first power switch, and the output end of the first power switch is connected with an engine of the first conveyor belt through the first closing switch;

the motor control loop of the second conveyor belt comprises a second closing coil and a second closing switch, one end of the second closing coil is connected to a direct-current power supply, the other end of the second closing coil is connected to the input end of the second power switch, and the output end of the second power switch is connected to an engine of the second conveyor belt through the second closing switch.

7. The coal conveyor belt as in claim 5 wherein the power switch means further comprises:

a third power switch disposed on the motor control loop of the third conveyor belt;

and a fourth power switch disposed on the motor control loop of the fourth conveyor belt.

8. The coal conveyor belt as in claim 7 wherein,

the motor control loop of the third conveyor belt comprises a third switching-on coil and a third switching-on switch, one end of the third switching-on coil is connected with a direct current power supply, the other end of the third switching-on coil is connected with the input end of the third power switch, and the output end of the third power switch is connected with an engine of the third conveyor belt through the third switching-on switch;

the motor control loop of the fourth conveyor belt comprises a fourth switching-on coil and a fourth switching-on switch, one end of the fourth switching-on coil is connected to a direct-current power supply, the other end of the fourth switching-on coil is connected to the input end of the fourth power switch, and the output end of the fourth power switch is connected to an engine of the fourth conveyor belt through the fourth switching-on switch.