CN212355489U - Off tracking device with two-stage protection - Google Patents
Off tracking device with two-stage protection Download PDFInfo
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- CN212355489U CN212355489U CN202020835962.XU CN202020835962U CN212355489U CN 212355489 U CN212355489 U CN 212355489U CN 202020835962 U CN202020835962 U CN 202020835962U CN 212355489 U CN212355489 U CN 212355489U
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- 238000012423 maintenance Methods 0.000 claims abstract description 26
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- 238000004519 manufacturing process Methods 0.000 abstract description 9
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Abstract
The utility model discloses a deviation device with two-stage protection, respectively set up a deviation switch in the both sides of belt, be provided with two travel switches in each deviation switch, two travel switches trigger the second grade of corresponding belt deviation and trigger, can trigger the travel switch of first order when the one-level triggers and report to the police and warn, the travel switch of first order connects the hollow screen, after the operator discovers, arranges the quick-witted maintenance personnel to overhaul; when the travel switch of the first stage fails or the deviation amount continues to increase and approaches the limit value, the travel switch of the second stage is triggered, and the second stage travel switch sends an instruction to an operating system to perform emergency shutdown. The belt running and machinery protection device has the advantages that the loss of the belt and machinery can be reduced to the minimum, secondary protection is realized, corresponding warning and operation can be carried out according to different belt deviation conditions, the belt running and machinery are greatly protected, an operator is timely informed to carry out corresponding maintenance work, the production loss is reduced to the minimum, and the production efficiency is guaranteed to the maximum extent.
Description
Technical Field
The utility model relates to a technical field that the protection of belt off tracking set up especially relates to a off tracking device with two-stage protection.
Background
When the belt, the conveyer belt and the like run, the deviation can be caused by various reasons, and generally the deviation is not considered within a reasonable deviation range. However, when the deviation of the belt is too large, the machine is damaged or the conveyed materials are unstable, and the deviation switch and the like are generally adopted to calculate deviation data and give corresponding alarms.
In the prior art, a deviation switch is a product for detecting the deviation of a conveying belt of a belt conveyor, and is a safety protection device for automatically alarming and stopping the conveying belt under the condition of deviation. The deviation switch has two stages of angles, generally, the first stage angles are 10, 12 and 20, and the second stage angles are 30, 35 and 45. The principle is as follows: when the conveyer belt runs and deviates, the conveyer belt touches the vertical roller of the switch and deflects the vertical roller, and when the deflection angle of the vertical roller reaches the 1-level switch angle, the switch sends out an alarm signal. When the deviation of the conveying belt is serious and reaches the 2-level switch angle, the switch sends a stop signal to realize the automatic stop of the deviation fault of the conveying belt. When the deviation fault is eliminated and the belt conveyor normally runs, the vertical roller can be automatically reset to return to the initial state. The deviation switches are arranged on two sides of the conveying belt, the vertical rollers are perpendicular to the plane of the edge of the conveying belt, and the two edges of the conveying belt are located at the height 1/3 of the vertical rollers.
The deviation switch with the structure adopts a mode that the vertical roller is contacted, so that the contact area between the circular surface of the vertical roller and the plane of the conveying belt is easy to generate slipping, the deviation data of the conveying belt is not accurate enough, the conveying efficiency of the conveying belt is reduced when the deviation data is deviated, and the machine is damaged or the materials are lost and wasted when the deviation data is serious; in addition, the existing vertical rod type deviation switch is fixed on the supports at two sides of the conveying belt, when the vertical rod type deviation switch cannot be automatically reset, fails or has other faults, the whole vertical rod type deviation switch needs to be disassembled by the whole machine for maintenance, sometimes, the conveying belt needs to be stopped for stopping and other shutdown operations, and therefore the maintenance of the deviation switch is inconvenient, the production efficiency of conveyed materials is affected, and online maintenance cannot be carried out under the condition of no shutdown.
Disclosure of Invention
The utility model aims at overcoming the shortcomings of the prior art, the utility model provides a deviation device with two-stage protection, which is characterized in that two deviation switches are respectively arranged at two sides of a belt, two travel switches are arranged in each deviation switch, the triggering of the two travel switches corresponds to the second-stage triggering of the belt deviation, the travel switch of the first stage is triggered to alarm when the first stage is triggered, the travel switch of the first stage is connected with a hollow screen, and after being discovered by an operator, the operator is arranged to overhaul; when the travel switch of the first stage fails or the deviation amount continues to increase and approaches the limit value, the travel switch of the second stage is triggered, and the second stage travel switch sends an instruction to an operating system to perform emergency shutdown. The belt running and machinery protection device has the advantages that the loss of the belt and machinery can be reduced to the minimum, secondary protection is realized, corresponding warning and operation can be carried out according to different belt deviation conditions, the belt running and machinery are greatly protected, an operator is timely informed to carry out corresponding maintenance work, the production loss is reduced to the minimum, and the production efficiency is guaranteed to the maximum extent.
The utility model provides a technical scheme that its technical problem adopted is: a deviation device with two-stage protection comprises two symmetrical side-by-side installation side plates, a belt positioned between the two installation side plates, and deviation switches respectively and symmetrically arranged on the respective installation side plates, wherein the deviation switches are arranged outside two sides of the belt, and the two deviation switches form a trigger switch system with two-stage protection; the off tracking switch comprises an off tracking switch mounting plate fixedly mounted with the mounting side plate, a switch outer cover fixedly sleeved in the off tracking switch mounting plate, an off tracking baffle which is hinged to the inner side end of the switch outer cover and is in a normally open state close to the outer side of the belt, a press pin movably mounted on the inner side wall surface of the off tracking baffle, a spring sleeved on the press pin, a rotating shaft mounted at the other end of the press pin, an eccentric wheel mounted at the bottom of the rotating shaft, a switch seat mounted in the switch outer cover, a travel switch arranged on the switch seat and corresponding to the two eccentric wheels, and a maintenance door mounted on the outer side end of the switch outer cover; the most outside face of off tracking baffle is equipped with the touch panel with belt side parallel arrangement, and the touch panel width is greater than 50mm and highly is greater than 200mm, and the touch panel forms the obtuse angle with the off tracking baffle and fixes the setting.
The travel switch is characterized in that a contact of a mechanical motion part is operated by utilizing the collision of the mechanical motion part to realize the connection or disconnection of a control circuit, thereby achieving a certain control purpose. When the belt runs, the deviation of the belt is protected through the deviation switches arranged on the installation side plates on the two sides of the belt, the side face of the belt has a certain reasonable range of distance with the deviation switches, the deviation of the belt in the reasonable range of distance basically does not influence the belt and machinery, when the belt deviates and touches the touch panel, the touch panel is pressed to enable the deviation baffle to extrude inwards and drive the press needle to press the rotating shaft, at the moment, the rotating shaft is stressed to rotate, the eccentric wheel rotates, and one of the travel switches is triggered to serve as primary alarm warning and the like; when the belt is seriously deviated, the stressed rotating amplitude of the eccentric wheel is too large to trigger another travel switch, namely, the belt is used as a second-stage response to send out an instruction to stop the machine, and the secondary protection can effectively prevent the belt from being deviated and timely give an alarm or stop the machine for operation and maintenance.
The switch outer cover is used for protecting core parts of the whole deviation switch from being interfered and influenced by the outside; the deviation baffle is in a normally open state and is hinged to enable the deviation baffle to have a certain travel distance to rotate so as to drive the rotating shaft to rotate and the like; the pressing pin is used for driving the rotating shaft to rotate when the deviation baffle is pressed; the spring is used for resetting the pressing pin, the rotating shaft, the eccentric wheel, the travel switch and the deviation baffle; the eccentric wheel is used as a trigger point for driving the two travel switches; the travel switches are provided with two secondary protections respectively, and different instructions and subsequent operation protections are sent out according to the triggering of different travel switches; the switch base is used for installing a travel switch; the maintenance door is used for facilitating maintenance when the deviation switch fails or parts cannot reset and the like, and can be used for on-line maintenance without stopping and maintenance without disassembling the whole deviation switch; the surface of the touch plate is parallel to the side face of the belt, the touch plate has certain width and height, the contact surface is smooth and large when the touch plate is in contact with the belt, the belt is prevented from slipping, the deviation of the belt is accurately calculated, the error is extremely small, and the mechanical stability is good.
Furthermore, two eccentric cam parts which are adjacently arranged are arranged on the eccentric wheel, the contact of one travel switch is positioned at the side surface close to one eccentric cam part, and the contact of the other travel switch is positioned at the concave position between the two eccentric cam parts. The travel switch positioned at the concave position between the two eccentric cam parts is protected for the first level, and the distance between the contact of the travel switch and the two eccentric cam parts is smaller; the travel switch which is positioned at the side position of the eccentric cam close to the maintenance door is used for the second-stage protection, and the distance between the contact of the travel switch and the side surface of the eccentric cam part is larger; when the eccentric wheel rotates, the travel switch of the first stage is triggered firstly to send out an alarm indication; when the eccentric wheel continues to rotate and triggers the travel switch of the second stage, the travel switch of the second stage can send out an instruction to carry out shutdown maintenance.
Furthermore, a fixed block is arranged on the rotating shaft, and the pressing pin penetrates through the fixed block and is fixedly installed on the fixed block through two hexagonal nuts.
Furthermore, the eccentric wheel is also provided with a limiting hexagon bolt. When the belt deviation amount is serious and the eccentric wheel reaches the limit of the rotation amplitude of the eccentric wheel, the limit hexagon bolt can limit the rotation amplitude of the eccentric wheel, so that the eccentric wheel is prevented from continuously rotating to cause the failure of the whole deviation switch and the incapability of resetting the pressure pin, the rotating shaft, the eccentric wheel and the like.
Furthermore, the deviation baffle forms articulated installation with the switch dustcoat through hex bolts, spring washer, plain washer.
To sum up, the utility model discloses a deviation device with two-stage protection respectively sets up a deviation switch in the both sides of belt, is provided with two travel switches in each deviation switch, and the trigger of two travel switches corresponds the second grade of belt deviation and triggers, can trigger the travel switch of first order when triggering one-level and report to the police and warn, and the travel switch of first order connects the hollow screen, and after the operator discovers, arranges the quick-witted maintenance personnel to overhaul; when the travel switch of the first stage fails or the deviation amount continues to increase and approaches the limit value, the travel switch of the second stage is triggered, and the second stage travel switch sends an instruction to an operating system to perform emergency shutdown. The belt running and machinery protection device has the advantages that the loss of the belt and machinery can be reduced to the minimum, secondary protection is realized, corresponding warning and operation can be carried out according to different belt deviation conditions, the belt running and machinery are greatly protected, an operator is timely informed to carry out corresponding maintenance work, the production loss is reduced to the minimum, and the production efficiency is guaranteed to the maximum extent.
Drawings
Fig. 1 is a schematic view of a deviation device with two-stage protection according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of the off tracking switch.
Detailed Description
Example 1
The deviation device with two-stage protection described in this embodiment 1, as shown in fig. 1 and fig. 2, includes two installation side plates 1 symmetrically arranged side by side, a belt 2 located between the two installation side plates, and deviation switches 3 symmetrically arranged on the respective installation side plates, respectively, the deviation switches are arranged outside both sides of the belt, and the two deviation switches form a trigger switch system of two-stage protection; the off tracking switch comprises an off tracking switch mounting plate 4 fixedly mounted with a mounting side plate, a switch outer cover 5 fixedly sleeved in the off tracking switch mounting plate, an off tracking baffle 6 which is hinged to the inner side end of the switch outer cover and is close to the outer side of a belt and in a normally open state, a press pin 7 movably mounted on the inner side wall surface of the off tracking baffle, a spring 8 sleeved on the press pin, a rotating shaft 9 mounted at the other end of the press pin, an eccentric wheel 10 mounted at the bottom of the rotating shaft, a switch seat 11 mounted in the switch outer cover, a travel switch 12 arranged on the switch seat and corresponding to the eccentric wheel, and a maintenance door 13 mounted on the outer side end of the switch outer cover; the most outside face of off tracking baffle is equipped with touch panel 14 with belt side parallel arrangement, and touch panel width is greater than 50mm and highly is greater than 200mm, and touch panel and off tracking baffle form the obtuse angle fixed set up.
The travel switch is characterized in that a contact of a mechanical motion part is operated by utilizing the collision of the mechanical motion part to realize the connection or disconnection of a control circuit, thereby achieving a certain control purpose. When the belt runs, the deviation of the belt is protected through the deviation switches arranged on the installation side plates on the two sides of the belt, the side face of the belt has a certain reasonable range of distance with the deviation switches, the deviation of the belt in the reasonable range of distance basically does not influence the belt and machinery, when the belt deviates and touches the touch panel, the touch panel is pressed to enable the deviation baffle to extrude inwards and drive the press needle to press the rotating shaft, at the moment, the rotating shaft is stressed to rotate, the eccentric wheel rotates, and one of the travel switches is triggered to serve as primary alarm warning and the like; when the belt is seriously deviated, the stressed rotating amplitude of the eccentric wheel is too large to trigger another travel switch, namely, the belt is used as a second-stage response to send out an instruction to stop the machine, and the secondary protection can effectively prevent the belt from being deviated and timely give an alarm or stop the machine for operation and maintenance.
The switch outer cover is used for protecting core parts of the whole deviation switch from being interfered and influenced by the outside; the deviation baffle is in a normally open state and is hinged to enable the deviation baffle to have a certain travel distance to rotate so as to drive the rotating shaft to rotate and the like; the pressing pin is used for driving the rotating shaft to rotate when the deviation baffle is pressed; the spring is used for resetting the pressing pin, the rotating shaft, the eccentric wheel, the travel switch and the deviation baffle; the eccentric wheel is used as a trigger point for driving the two travel switches; the travel switches are provided with two secondary protections respectively, and different instructions and subsequent operation protections are sent out according to the triggering of different travel switches; the switch base is used for installing a travel switch; the maintenance door is used for facilitating maintenance when the deviation switch fails or parts cannot reset and the like, and can be used for on-line maintenance without stopping and maintenance without disassembling the whole deviation switch; the surface of the touch plate is parallel to the side face of the belt, the touch plate has certain width and height, the contact surface is smooth and large when the touch plate is in contact with the belt, the belt is prevented from slipping, the deviation of the belt is accurately calculated, the error is extremely small, and the mechanical stability is good.
In this embodiment, the eccentric cam is provided with two eccentric cam portions 15 arranged adjacently, the contact of one of the stroke switches is located at a side close to the one eccentric cam portion, and the contact of the other stroke switch is located at a recessed position between the two eccentric cam portions. The travel switch positioned at the concave position between the two eccentric cam parts is protected for the first level, and the distance between the contact of the travel switch and the two eccentric cam parts is smaller; the travel switch which is positioned at the side position of the eccentric cam close to the maintenance door is used for the second-stage protection, and the distance between the contact of the travel switch and the side surface of the eccentric cam part is larger; when the eccentric wheel rotates, the travel switch of the first stage is triggered firstly to send out an alarm indication; when the eccentric wheel continues to rotate and triggers the travel switch of the second stage, the travel switch of the second stage can send out an instruction to carry out shutdown maintenance.
In this embodiment, the rotating shaft is provided with a fixed block 16, and the pressing pin penetrates through the fixed block and is fixedly mounted on the fixed block by two hexagonal nuts 17.
In this embodiment, the eccentric wheel is further provided with a limiting hexagon bolt 18. When the belt deviation amount is serious and the eccentric wheel reaches the limit of the rotation amplitude of the eccentric wheel, the limit hexagon bolt can limit the rotation amplitude of the eccentric wheel, so that the eccentric wheel is prevented from continuously rotating to cause the failure of the whole deviation switch and the incapability of resetting the pressure pin, the rotating shaft, the eccentric wheel and the like.
In the embodiment, the deviation baffle is hinged with the switch outer cover through a hexagon bolt 19, a spring washer 20 and a flat washer 21.
The two sides of a belt of the deviation device with two-stage protection are respectively provided with a deviation switch, each deviation switch is internally provided with two travel switches, the triggering of the two travel switches corresponds to the secondary triggering of the belt deviation, the first travel switch can be triggered to alarm when the first travel switch is triggered, the first travel switch is connected with a hollow screen, and an operator arranges a mechanic to overhaul after finding the first travel switch; when the travel switch of the first stage fails or the deviation amount continues to increase and approaches the limit value, the travel switch of the second stage is triggered, and the second stage travel switch sends an instruction to an operating system to perform emergency shutdown. The belt running and machinery protection device has the advantages that the loss of the belt and machinery can be reduced to the minimum, secondary protection is realized, corresponding warning and operation can be carried out according to different belt deviation conditions, the belt running and machinery are greatly protected, an operator is timely informed to carry out corresponding maintenance work, the production loss is reduced to the minimum, and the production efficiency is guaranteed to the maximum extent.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical solutions of the present invention in any way. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention all still fall within the scope of the technical solution of the present invention.
Claims (5)
1. A deviation device with two-stage protection is characterized by comprising two symmetrical side-by-side installation side plates, a belt positioned between the two installation side plates, and deviation switches respectively and symmetrically arranged on the respective installation side plates, wherein the deviation switches are arranged outside two sides of the belt and form a trigger switch system with two-stage protection; the off tracking switch comprises an off tracking switch mounting plate fixedly mounted with the mounting side plate, a switch outer cover fixedly sleeved in the off tracking switch mounting plate, an off tracking baffle which is hinged to the inner side end of the switch outer cover and is in a normally open state close to the outer side of the belt, a press pin movably mounted on the inner side wall surface of the off tracking baffle, a spring sleeved on the press pin, a rotating shaft mounted at the other end of the press pin, an eccentric wheel mounted at the bottom of the rotating shaft, a switch seat mounted in the switch outer cover, a travel switch arranged on the switch seat and corresponding to the two eccentric wheels, and a maintenance door mounted on the outer side end of the switch outer cover; the most outside face of off tracking baffle is equipped with the touch panel with belt side parallel arrangement, and the touch panel width is greater than 50mm and highly is greater than 200mm, and the touch panel forms the obtuse angle with the off tracking baffle and fixes the setting.
2. The running deviation device with two-stage protection as claimed in claim 1, wherein the eccentric wheel is provided with two eccentric cam portions which are adjacently arranged, the contact of one stroke switch is positioned close to the side surface of one eccentric cam portion, and the contact of the other stroke switch is positioned at a concave position between the two eccentric cam portions.
3. The deviation device with two-stage protection as claimed in claim 2, wherein the rotating shaft is provided with a fixed block, and the pressing pin penetrates through the fixed block and is fixedly mounted on the fixed block through two hexagonal nuts.
4. The deviation device with two-stage protection according to claim 3, wherein the eccentric wheel is further provided with a limiting hexagon bolt.
5. The running deviation device with two-stage protection as claimed in claim 4, wherein the running deviation baffle is hinged to the switch housing through a hexagon bolt, a spring washer and a flat washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020835962.XU CN212355489U (en) | 2020-05-18 | 2020-05-18 | Off tracking device with two-stage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020835962.XU CN212355489U (en) | 2020-05-18 | 2020-05-18 | Off tracking device with two-stage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212355489U true CN212355489U (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020835962.XU Active CN212355489U (en) | 2020-05-18 | 2020-05-18 | Off tracking device with two-stage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212355489U (en) |
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2020
- 2020-05-18 CN CN202020835962.XU patent/CN212355489U/en active Active
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