CN106956906B - Intelligent deviation switch with amplifying mechanism and monitoring method thereof - Google Patents
Intelligent deviation switch with amplifying mechanism and monitoring method thereof Download PDFInfo
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- CN106956906B CN106956906B CN201710082097.9A CN201710082097A CN106956906B CN 106956906 B CN106956906 B CN 106956906B CN 201710082097 A CN201710082097 A CN 201710082097A CN 106956906 B CN106956906 B CN 106956906B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
Abstract
The invention provides an intelligent deviation switch with an amplifying mechanism, which comprises a switch contact, the amplifying mechanism, a microswitch, a shell and a control unit, wherein the amplifying mechanism is arranged on the switch contact; the switch contact comprises a first contact part and a second contact part; the amplifying mechanism is positioned in the shell and at one end of the second contact part far away from the first contact part, and the amplifying mechanism is connected with the switch contact and a reed of the micro switch and is used for transmitting the displacement of the switch contact to the reed after amplifying; when the reed is displaced to a set critical point, the microswitch sends a level signal to the control unit; the control unit responds to the level signal sent by the microswitch and cuts off the power supply of the belt conveying equipment. This intelligence off tracking switch has set up the mechanism of enlargiing between switch contact and micro-gap switch, enlargies slight belt offset, has improved off tracking switch's sensitivity, simultaneously, carries out the auto-power-off to belt transportation equipment, realizes automated production.
Description
Technical Field
The invention relates to the field of industrial sensors, in particular to an intelligent deviation switch with an amplifying mechanism and a monitoring method thereof.
Background
The belt conveying equipment is widely applied in modern production, but the belt can shift along with the time in the production process, and besides the production is affected, the belt is easy to wear, and even the equipment is damaged and damaged.
Usually, a manual observation mode is selected to monitor whether the belt deviates, but the manual observation mode cannot accurately control the belt deviation amount, visual fatigue is easily caused by long-time observation, and misjudgment is caused on the belt deviation.
In the prior art, a deviation switch or ray detection and other means are adopted to monitor whether the belt deviates, but the detection precision of the current deviation switch is low, a control signal can be given only after the contact rod rotates by a large angle, the belt cannot be detected when the belt slightly deviates, ray detection threatens the health of workers, and the defects of high cost, easiness in misjudgment and the like exist. .
Disclosure of Invention
The invention aims to provide an intelligent deviation switch with an amplifying mechanism and a monitoring method thereof.
The above object of the invention is achieved by the features of the independent claims, the dependent claims developing the features of the independent claims in alternative or advantageous ways.
In order to achieve the purpose, the invention provides an intelligent deviation switch which is suitable for monitoring whether a belt of belt transportation equipment deviates or not, and comprises a switch contact, an amplifying mechanism, a microswitch, a shell and a control unit;
the top end of the shell is provided with an opening part which is provided with a cylindrical cavity;
the switch contact comprises a first contact part and a second contact part, wherein the first contact part is positioned above the opening part, and the end surface of the first contact part, which is far away from the shell, is a smooth plane; the second contact part is a cylindrical structure body and is positioned in the cylindrical cavity of the opening part, and two ends of the second contact part extend out of the cylindrical cavity;
the microswitch is fixed on the inner wall of the shell and is provided with a reed, and the microswitch is set to generate a level signal when the reed displaces to a set critical point;
the amplifying mechanism is positioned in the shell and at one end of the second contact part far away from the first contact part, and the amplifying mechanism is connected with the switch contact and a reed of the micro switch and is used for amplifying the displacement of the switch contact and transmitting the amplified displacement to the reed;
the control unit is fixed on the inner wall of the shell and comprises a control part and a relay switch;
the control part is provided with a signal input end and a signal output end, the signal input end is connected with the micro switch and used for receiving the level signal sent by the micro switch, and the signal output end is connected with the input end of the relay switch;
the control part is set to respond to the level signal sent by the micro switch, generate a cut-off signal and send the signal to the relay switch;
the output terminal of the relay switch is connected to a power supply terminal of the belt conveyor and is configured to cut off the power supply of the belt conveyor in response to the cut-off signal.
Further, the shell is made of aluminum;
the switch contact is made of stainless steel;
and a sealing ring is arranged between the switch contact and the shell.
Further, the amplifying mechanism comprises a touch block and a lever;
one end of the touch block is in contact with one end of the second contact part, which is far away from the first contact part, and the other end of the touch block is fixed in the middle of the lever;
the lever is positioned below the touch block, one end of the lever is fixed on the inner wall of the shell, and the other end of the lever is connected with a reed of the microswitch;
the lever is arranged in such a way that when the trigger block applies force to the middle of the lever, the end of the lever connected with the reed rotates around the fixed end of the lever to push the reed to generate displacement.
Furthermore, a limiting plate is arranged between the second contact part and the lever and fixed on the inner wall of the shell;
a gap is formed between the limiting plate and the end face, far away from the first contact part, of the second contact part;
the limiting plate is provided with a through hole, and the touch block penetrates through the through hole to be in contact with the second contact part.
Further, the limiting plate is made of stainless steel;
the lever is made of plastics;
the touch block is made of plastic.
Furthermore, the intelligent deviation switch is also provided with an alarm unit which is connected with the signal output end of the control part and is set to respond to the cut-off signal sent by the control part and send out sound and light alarm.
The invention also provides a monitoring method adopting the intelligent deviation switch with the amplifying mechanism, which comprises the following steps:
distributing a plurality of intelligent deviation switches at positions of two sides of a belt, where deviation is required to be monitored, wherein one end, far away from a shell, of a switch contact of each intelligent deviation switch is adjacent to the belt, a gap is formed between the switch contact and the belt, the width of the gap is smaller than or equal to the allowable deviation of the belt at the position of the gap, a relay switch of each intelligent deviation switch is connected with a power supply of belt transportation equipment, and the initial state of the relay switch is a normally-closed state;
during the operation of the belt conveyor:
when the belt is not in contact with the switch contacts of the intelligent deviation switches, the relay switch maintains a normally closed state, and the belt conveying equipment normally operates;
when the belt contacts the switch contact of any one of the intelligent deviation switches, the microswitch of the intelligent deviation switch generates a level signal and sends the level signal to the control part of the intelligent deviation switch, and the control part responds to the level signal to generate a cut-off signal and sends the cut-off signal to the relay of the intelligent deviation switch, so that the relay switch is controlled to be switched into a normally open state, and the power supply of the belt transportation equipment is cut off.
Furthermore, the control unit of the plurality of intelligent deviation switches is provided with a dial switch for setting the serial numbers of the intelligent deviation switches to distinguish;
the control units of the intelligent deviation switches are connected with an upper computer, and the numbers and the working states of the intelligent deviation switches are fed back to the upper computer in real time.
Compared with the prior art, the technical scheme of the invention has the following remarkable beneficial effects:
this intelligence off tracking switch has set up the mechanism of enlargiing between switch contact and micro-gap switch, enlargies slight belt offset to greatly improved off tracking switch's sensitivity, simultaneously, carry out the auto-power-off to the belt transportation equipment that the belt has taken place the skew, realize automated production, protective apparatus and staff safety.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a structural sectional view of the intelligent deviation switch of the invention.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
A deviation switch in the prior art selectively uses a contact rod to monitor whether a belt deviates, once the belt deviates, the contact rod is contacted, the contact rod rotates, and an alarm is sent or a power supply is cut off when the contact rod rotates to a certain angle.
The operating principle determines that the belt can push the feeler lever to start rotating only when the deviation is large, the belt which is slightly deviated has no monitoring capability, the abrasion of the side edge of the belt which is slightly deviated is still unavoidable, and equipment damage or production accidents can be caused in serious cases.
The invention provides an intelligent deviation switch with an amplifying mechanism aiming at the prior technical problem, and the intelligent deviation switch comprises a switch contact, the amplifying mechanism, a microswitch, a control unit and a shell. The switch contact is placed on one side of the belt, a certain gap is formed between the switch contact and the belt, and the width of the gap is smaller than or equal to the allowable offset of the belt. Once the belt offset exceeds the gap width, the switch contact generates a displacement amount in the shell, the displacement amount is amplified by the amplifying mechanism and then transmitted to the reed of the micro switch, once the displacement of the reed exceeds the limit value of the micro switch, the micro switch generates a level signal, and the control unit responds to the level signal to cut off the power supply of the belt transportation equipment and protect the safety of the equipment and workers.
Therefore, due to the arrangement of the amplifying mechanism, a small displacement of the switch contact can also enable the microswitch to generate a level signal, and the microswitch does not need to be switched off until the displacement of the switch contact reaches a limit value of the microswitch, so that the sensitivity of the intelligent deviation switch is greatly improved.
The amplifying mechanism has various structural designs, and the invention provides one embodiment of the amplifying mechanism, which amplifies the displacement of the switch contact by utilizing a lever amplifying principle through one touch block and one lever.
The following describes the embodiment in detail with reference to the drawings.
With reference to fig. 1, the present invention provides an intelligent deviation switch, which is suitable for monitoring whether a belt of a belt transportation device deviates, and comprises a switch contact 1, a touch block 2, a lever 3, a micro switch 4, a control unit 6 and a housing 7, wherein the touch block 2 and the lever 3 are combined to form an amplifying mechanism.
The top end of the shell 7 is provided with an opening part 7a, the opening part 7a is provided with a cylindrical cavity, and the shell 7 is made of aluminum, and the main purpose is to reduce the self weight of the intelligent deviation switch.
The switch contact 1 includes two parts, namely a first contact part 1a and a second contact part 1b, which are still integrally formed, and the two parts are only for convenience of structural description.
The first contact portion 1a is located above the opening portion 7a, and the end face of the first contact portion 1a, which is far from the housing 7, is a smooth plane, and the end face is arranged to contact with the belt, so that the end face needs to have high hardness and wear resistance, and the end face can be designed into any shape, and is usually designed into a circular shape.
The second contact portion 1b is a cylindrical structure and is located in the cylindrical cavity of the opening portion 7a, the two ends of the second contact portion 1b extend out of the cylindrical cavity, one end of the second contact portion is the first contact portion 1a, and the other end of the second contact portion is located in the housing 7.
The switch contact 1 is made of stainless steel, and other materials with higher hardness and better wear resistance can be selected actually.
In order to reduce the dead weight of the intelligent deviation switch, a groove is usually arranged on one side, facing the shell, of the first contact part 1a, and the purpose of doing so also comprises reducing the material use and reducing the cost.
When the belt is deflected, the switch contact 1 is subjected to a pressing force from the belt, and its component perpendicular to the end faces will cause the switch contact 1 to move into the housing 7.
An annular slide-assisting block 8 is arranged between the second contact part 1b and the cylindrical cavity of the opening part 7a, the outer wall of the annular slide-assisting block 8 is tightly attached to the inner wall of the cylindrical cavity of the opening part 7a, and two ends of the annular slide-assisting block 8 are flush with two ends of the cylindrical cavity.
A plurality of circular arc-shaped bosses 1c are symmetrically arranged on the outer wall of the second contact part 1b along the axial center line of the second contact part, and the top end of each circular arc-shaped boss 1c is in contact with the inner wall of the annular slide assisting block 8.
Therefore, the switch contact 1 and the annular sliding-assistant block 8 are only contacted through the plurality of arc-shaped bosses 1c, the contact surface is small, the friction force applied during moving is small, and the switch contact 1 can conveniently move into the shell 7. In addition, the switch contact 1 and the annular auxiliary sliding block 8 are always in a contact state, so that the switch contact 1 can be ensured to move only in one direction without inclination.
Therefore, the annular sliding-assistant block 8 also needs to have high hardness and wear resistance, and is usually made of stainless steel.
The annular auxiliary sliding block 8 is arranged mainly for protecting the inner wall of the shell 7 and reducing scratches, so that the precision of the intelligent deviation switch is guaranteed. As mentioned above, in order to reduce the self-weight, the housing 7 is made of aluminum, which has poor hardness and wear resistance, but if stainless steel with good hardness and wear resistance is used, the weight of the intelligent deviation switch is too large. In order to balance the two, the invention arranges a ring-shaped slide-assistant block 8 on the inner wall of the opening part 7a to protect the inner wall of the shell 7.
The touch block 2 is located in the housing 7, is located at one end of the second contact portion 1b far away from the first contact portion 1a, and has one end in contact with the second contact portion 1b and the other end fixed in the middle of the lever 3, where the middle is other areas except for the two ends.
The lever 3 is positioned in the shell 7 and below the touch block 2, one end of the lever 3 is fixed on the inner wall of the shell 7, and the other end of the lever is connected with a reed of the microswitch 4.
The microswitch 4 is fixed on the inner wall of the shell 7, the signal output end of the microswitch 4 is connected with the control unit 6, and the microswitch 4 is set to send a level signal to the control unit 6 when the reed displaces to a set critical point. Here, the microswitch 4 only performs the conversion function of mechanical energy and electric signals, and when the microswitch 4 is triggered, the output end of the microswitch 4 is switched on or off and transmits the two states to the control unit 6 as level signals.
When the touch block 2 applies force to the middle of the lever 3, the end of the lever 3 connected with the reed rotates around the end of the lever 3 fixed on the inner wall of the shell 7, and the reed is pushed to generate displacement.
The touch block 2 generates a small displacement under the action of the switch contact 1, and if the displacement of the touch block 2 is fixed, the farther the touch block 2 is away from the reed of the microswitch 4, the larger the displacement generated at the end of the reed is, which is the principle of amplifying the belt offset by the lever and is one of the key technologies of the invention.
Therefore, the following two factors affect the detection sensitivity of the intelligent deviation switch:
1. the position of the contact point of the touch pad 2 with the lever 3. By adjusting the position of the contact point, the magnification of the lever is adjusted. The farther the contact point is away from the reed, the higher the amplification factor is, so that the detection sensitivity of the intelligent deviation switch is higher.
2. The sensitivity of the microswitch itself. The higher the sensitivity of the microswitch is, the higher the detection sensitivity of the intelligent deviation switch is.
However, the position of the contact point is not as far as the reed is better, but it is expected that the range of the micro switch 4 is fixed, and once the amplification factor of the lever 3 is too large, the displacement amount of the reed exceeds the maximum range of the micro switch 4, and the micro switch 4 is damaged. Similarly, if the contact point is too close to the reed, the amplification factor is too small, and the micro switch 4 is not triggered when the belt deviation exceeds the limit, the intelligent deviation switch loses meaning.
Therefore, the setting of the position of the contact point needs to consider the range of the micro switch 4 and the detection sensitivity required by the whole intelligent deviation switch. In addition, the production processing precision is also taken into consideration, and the production processing schedule comprises the precision of the microswitch 4, the lever 3, the switch probe 1 and the touch block 2.
The control unit 6 is fixed on the inner wall of the shell and comprises a control part and a relay switch.
The control part is provided with a signal input end and a signal output end, the signal input end is connected with the micro switch 4 and used for receiving the level signal sent by the micro switch 4, and the signal output end is connected with the input end of the relay switch.
The control part is configured to generate a cut-off signal in response to the level signal transmitted from the microswitch 4 and transmit the cut-off signal to the relay switch.
The output terminal of the relay switch is connected to a power supply terminal of the belt conveyor and is configured to cut off the power supply of the belt conveyor in response to the cut-off signal.
The power supply end of the belt conveying equipment mentioned here can be a power switch of the belt conveying equipment, and can also be a unit for controlling the power switch in a control device of the belt conveying equipment, and the relay switch directly or indirectly acts on the power switch of the belt conveying equipment to realize the control of the running state of the belt conveying equipment.
And the relay switch is provided with two contacts, has two kinds of operating condition: normally open and normally closed. Consider that intelligence off tracking switch is in monitor state under most of the circumstances, we set relay switch to:
when the relay switch is in a normally closed state, the relay switch does not play any role on the belt conveying equipment, and the belt conveying equipment operates normally; when the relay switch is in a normally open state, the relay switch cuts off the power supply of the belt transport equipment.
The intelligent deviation switch also has an alarm unit, which is connected with the control part of the control unit 6 and is arranged to give an audible and visual alarm in response to a cut-off signal sent by the control part of the control unit 6.
A limit plate 9 is arranged between the second contact part 1b and the lever 3, and the limit plate 9 is fixed on the inner wall of the shell 7.
A gap exists between the limiting plate 9 and the end face of the second contact part 1b far away from the first contact part 1 a.
The limiting plate 9 has a through hole, and the contact block 2 passes through the through hole to contact with the second contact portion 1 b.
The purpose of providing the limit plate 9 is two:
first, the impact force applied to the switch contact 1 by the belt is large when the impact force is applied to the switch contact 1, and if the impact force is directly applied to the touch block 2, the touch block 2 is easily damaged because the contact point between the switch contact 1 and the touch block 2 is small and the pressure is large.
Secondly, the displacement of the switch contact 1 is controlled, and the micro switch 4 is protected. The clearance between the switch contact 1 and the limit plate 9 is the maximum displacement that can be achieved by the switch contact 1.
Therefore, the limiting plate 9 is required to have high strength and is generally made of stainless steel.
In addition, since the impact force is borne by the limit plate 9, the lever 3 and the touch block 2 can be made of plastics in order to reduce the dead weight.
And a sealing ring 5 is arranged between the switch contact 1 and the shell 7, so that dust and moisture are prevented from entering the shell 7.
The intelligent deviation switch can monitor two working states of the belt conveying equipment, and the deviation monitoring method comprises the following steps:
in the first working state, when the belt conveying equipment works normally, the belt does not contact the switch contact 1, the relay switch is in a normally closed state, and the operation of the belt conveying equipment is not influenced.
In the second working state, the belt conveying equipment works abnormally, the belt has large deviation and exceeds a limit value, the belt contacts the switch contact 1, and thrust is exerted on the switch contact 1.
The switch contact 1 moves in the housing 7, applies a pushing force in the same direction as the moving direction to the touch block 2, moves the touch block 2 in the force-receiving direction, and transmits the pushing force to the lever 3.
One end of the lever 3 is fixed, the other end of the lever rotates around the fixed end of the lever under the action of pushing force, and a reed of the microswitch 4 generates displacement.
The micro switch 4 sends a level signal to the control section of the control unit 6 when the reed displacement exceeds a set value.
The control section transmits a cut-off signal to the relay switch in response to the level signal.
The relay switch is switched to a normally open state, and the power supply of the belt conveying equipment is cut off.
In the actual production process, a plurality of intelligent deviation switches are generally required to be distributed on two sides of a belt, and the invention provides a monitoring method which comprises the following steps:
the intelligent deviation switches are distributed at positions, where deviation quantity needs to be monitored, of two sides of the belt, one end, away from the shell, of each switch contact of each intelligent deviation switch is adjacent to the belt, a gap is formed between each switch contact and the belt, the width of the gap is smaller than or equal to the allowable deviation quantity of the belt at the position where the gap is located, a relay switch of each intelligent deviation switch is connected with a power supply of the belt transportation equipment, and the initial state of the relay switch is in a normally-closed state.
During the operation of the belt conveyor:
when the belt is not in contact with the switch contacts of the intelligent deviation switches, the relay switch maintains a normally closed state, and the belt conveying equipment normally operates.
When the belt contacts the switch contact of any one of the intelligent deviation switches, the microswitch of the intelligent deviation switch generates a level signal and sends the level signal to the control part of the intelligent deviation switch, and the control part responds to the level signal to generate a cut-off signal and sends the cut-off signal to the relay of the intelligent deviation switch, so that the relay switch is controlled to be switched into a normally open state, and the power supply of the belt transportation equipment is cut off.
So, can carry out the control of all-round multi-angle to the belt.
In addition, the control unit of each intelligent deviation switch is provided with a dial switch for setting the serial number of the intelligent deviation switch to distinguish. All the control units are connected with an upper computer, the numbers of the intelligent deviation switches belonging to the control units and the working states of the intelligent deviation switches are fed back to the upper computer in real time, the upper computer can adopt a PC or a PLC and is provided with a display screen, and a worker can find a fault point quickly.
Therefore, the amplification mechanism is arranged between the switch contact and the microswitch of the intelligent deviation switch, slight belt deviation is amplified, the sensitivity of the deviation switch is greatly improved, meanwhile, the automatic power-off is carried out on the belt transportation equipment with the belt deviated, the automatic production is realized, and the safety of the equipment and workers is protected.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. An intelligent deviation switch with an amplifying mechanism is suitable for monitoring whether a belt of belt conveying equipment deviates or not, and is characterized by comprising a switch contact, the amplifying mechanism, a microswitch, a shell and a control unit;
the top end of the shell is provided with an opening part which is provided with a cylindrical cavity;
the switch contact comprises a first contact part and a second contact part, wherein the first contact part is positioned above the opening part, and the end surface of the first contact part, which is far away from the shell, is a smooth plane; the second contact part is a cylindrical structure body and is positioned in the cylindrical cavity of the opening part, and two ends of the second contact part extend out of the cylindrical cavity;
an annular slide-assisting block is arranged between the second contact part and the cylindrical cavity of the opening part, the outer wall of the annular slide-assisting block is tightly attached to the inner wall of the cylindrical cavity of the opening part, and two ends of the annular slide-assisting block are flush with two ends of the cylindrical cavity; the switch contact and the annular auxiliary sliding block are always in a contact state so as to ensure that the switch contact only moves towards one direction and prevent inclination;
the microswitch is fixed on the inner wall of the shell and is provided with a reed, and the microswitch is set to generate a level signal when the reed displaces to a set critical point;
the amplifying mechanism is positioned in the shell and at one end of the second contact part far away from the first contact part, and the amplifying mechanism is connected with the switch contact and a reed of the microswitch and is used for transmitting the displacement of the switch contact to the reed after being amplified; the slight belt offset is amplified, so that the sensitivity of the deviation switch is improved;
the control unit is fixed on the inner wall of the shell and comprises a control part and a relay switch;
the control part is provided with a signal input end and a signal output end, the signal input end is connected with the micro switch and used for receiving the level signal sent by the micro switch, and the signal output end is connected with the input end of the relay switch;
the control part is set to respond to the level signal sent by the micro switch, generate a cut-off signal and send the signal to the relay switch;
the output terminal of the relay switch is connected to a power supply terminal of the belt conveyor and is configured to cut off the power supply of the belt conveyor in response to the cut-off signal.
2. The intelligent yaw switch with an amplification mechanism of claim 1, wherein a seal ring is disposed between the switch contact and the housing.
3. The intelligent deviation switch with the amplifying mechanism according to claim 1, wherein the amplifying mechanism comprises a touch block and a lever;
one end of the touch block is in contact with one end of the second contact part, which is far away from the first contact part, and the other end of the touch block is fixed in the middle of the lever;
the lever is positioned below the touch block, one end of the lever is fixed on the inner wall of the shell, and the other end of the lever is connected with a reed of the microswitch;
the lever is arranged in such a way that when the trigger block applies force to the middle of the lever, the end of the lever connected with the reed rotates around the fixed end of the lever to push the reed to generate displacement.
4. The intelligent deviation switch with the amplification mechanism according to claim 3, wherein a limiting plate is arranged between the second contact part and the lever, and the limiting plate is fixed on the inner wall of the shell;
a gap is formed between the limiting plate and the end face, far away from the first contact part, of the second contact part;
the limiting plate is provided with a through hole, and the touch block penetrates through the through hole to be in contact with the second contact part.
5. The intelligent deviation switch with the amplifying mechanism according to claim 4, wherein the limiting plate is made of stainless steel.
6. The intelligent deviation switch with the amplification mechanism of claim 3, wherein the touch block is made of plastic.
7. The intelligent deviation switch with the amplifying mechanism according to claim 3, wherein the lever is made of plastic.
8. The intelligent deviation switch with the amplification mechanism of claim 1, further comprising an alarm unit connected to the signal output terminal of the control part and configured to send an alarm in response to a cut-off signal sent by the control part.
9. A monitoring method using the intelligent deviation switch with the amplifying mechanism as claimed in any one of claims 1 to 7, characterized in that the method comprises the following steps:
distributing a plurality of intelligent deviation switches at positions of two sides of a belt, where deviation is required to be monitored, wherein one end, far away from a shell, of a switch contact of each intelligent deviation switch is adjacent to the belt, a gap is formed between the switch contact and the belt, the width of the gap is smaller than or equal to the allowable deviation of the belt at the position of the gap, a relay switch of each intelligent deviation switch is connected with a power supply of belt transportation equipment, and the initial state of the relay switch is a normally-closed state;
during the operation of the belt conveyer:
when the belt is not in contact with the switch contacts of the intelligent deviation switches, the relay switch maintains a normally-closed state, and the belt conveying equipment operates normally;
when the belt contacts the switch contact of any one of the intelligent deviation switches, the microswitch of the intelligent deviation switch generates a level signal and sends the level signal to the control part of the intelligent deviation switch, and the control part responds to the level signal to generate a cut-off signal and sends the cut-off signal to the relay of the intelligent deviation switch, so that the relay switch is controlled to be switched into a normally open state, and the power supply of the belt transportation equipment is cut off.
10. The monitoring method according to claim 9, wherein the control unit of the plurality of intelligent deviation switches is provided with a dial switch for setting the numbers of the intelligent deviation switches to distinguish;
the control units of the intelligent deviation switches are connected with an upper computer and feed the numbers and the working states thereof back to the upper computer in real time.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2069550U (en) * | 1989-12-23 | 1991-01-16 | 沈阳冶炼厂 | Dynamic state testing device for electromechanical equipment |
| CN2174452Y (en) * | 1993-10-09 | 1994-08-17 | 贺兴农 | Protector for belt creeping |
| DE59208926D1 (en) * | 1991-11-18 | 1997-10-30 | Inventio Ag | Device for triggering safety devices |
| CN201400467Y (en) * | 2009-04-23 | 2010-02-10 | 武汉钢铁(集团)公司 | Tubular-shaped belt conveyer twisting and folding detecting device |
| CN102152952A (en) * | 2011-03-07 | 2011-08-17 | 长春工业大学 | Deviation-preventing detection circuit and detection method for furnace charge conveyer belt of electric arc furnace |
| CN204999228U (en) * | 2015-11-13 | 2016-01-27 | 江苏通达机械设备制造有限公司 | Single -carrier -roller belt type conveyer |
| CN106335763A (en) * | 2016-12-02 | 2017-01-18 | 津市市荣迪实业有限公司 | The deviation correcting device of belt conveyor and belt conveyor |
| CN206485923U (en) * | 2017-02-15 | 2017-09-12 | 克莱门斯工业传感器南京有限公司 | Intelligent deviation switch with enlarger |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069550U (en) * | 1989-12-23 | 1991-01-16 | 沈阳冶炼厂 | Dynamic state testing device for electromechanical equipment |
| DE59208926D1 (en) * | 1991-11-18 | 1997-10-30 | Inventio Ag | Device for triggering safety devices |
| CN2174452Y (en) * | 1993-10-09 | 1994-08-17 | 贺兴农 | Protector for belt creeping |
| CN201400467Y (en) * | 2009-04-23 | 2010-02-10 | 武汉钢铁(集团)公司 | Tubular-shaped belt conveyer twisting and folding detecting device |
| CN102152952A (en) * | 2011-03-07 | 2011-08-17 | 长春工业大学 | Deviation-preventing detection circuit and detection method for furnace charge conveyer belt of electric arc furnace |
| CN204999228U (en) * | 2015-11-13 | 2016-01-27 | 江苏通达机械设备制造有限公司 | Single -carrier -roller belt type conveyer |
| CN106335763A (en) * | 2016-12-02 | 2017-01-18 | 津市市荣迪实业有限公司 | The deviation correcting device of belt conveyor and belt conveyor |
| CN206485923U (en) * | 2017-02-15 | 2017-09-12 | 克莱门斯工业传感器南京有限公司 | Intelligent deviation switch with enlarger |
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| Publication number | Publication date |
|---|---|
| CN106956906A (en) | 2017-07-18 |
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