CN209740056U - Chain breakage detection device for bucket elevator - Google Patents
Chain breakage detection device for bucket elevator Download PDFInfo
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- CN209740056U CN209740056U CN201920372338.8U CN201920372338U CN209740056U CN 209740056 U CN209740056 U CN 209740056U CN 201920372338 U CN201920372338 U CN 201920372338U CN 209740056 U CN209740056 U CN 209740056U
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- chain
- bucket elevator
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- proximity switch
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Abstract
the utility model discloses a bucket elevator chain breakage detection device, be provided with chain conveying mechanism in the bucket elevator, chain conveying mechanism includes the action wheel, follows driving wheel and chain, and the action wheel is by motor drive, wherein, include: the measuring template is a circular plate, the measuring template is concentrically arranged at any end of the rotating shaft of the driven wheel, and a through hole is formed in the end face of the measuring template; the proximity switch is arranged on one side of the measuring die and corresponds to the through hole so as to be triggered and sensed by the through hole; and the control system is connected with the proximity switch and the motor. The utility model discloses simple structure, simple installation, mistake signal are few, and the maintenance volume is few, practices thrift the fund cost.
Description
Technical Field
the utility model relates to a chain breakage check out test set technical field, more specifically says, the utility model relates to a bucket elevator chain breakage detection device.
Background
the chain type conveying mechanism is an important part of equipment such as a hoister, a chain conveyor and the like, and mainly comprises a driving wheel, a driven wheel and a chain, wherein the driving wheel is driven by a motor. When the chain breaks, the chain needs to be detected and stopped in time to prevent the motor from being damaged due to continuous rotation and prevent the condition of conveying and breaking. The detection of the broken link is generally completed by a broken link signal measuring device, but the existing broken link signal measuring device has the problem of insufficient measuring accuracy. For example, in the conventional chain breakage detecting device, the proximity switch is directly arranged near the chain, and when the chain is loosened, drooped or broken, the proximity switch sends a signal. In practice, the chain will generate a certain vibration under normal operation, which causes an identification error of the proximity switch, and further affects the accuracy of the measurement of the broken link signal.
Therefore, it is desirable to design a chain breakage detecting device for a bucket elevator, which can solve the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
it is an object of the present invention to address at least the above-mentioned deficiencies and to provide at least the advantages which will be explained later.
another object of the utility model is to provide a bucket elevator broken chain detection device that can accurately judge whether chain conveying mechanism breaks the chain.
In order to achieve these objects and other advantages in accordance with the present invention, the present invention provides a chain breakage detecting device for a bucket elevator, wherein a chain conveying mechanism is disposed in the bucket elevator, the chain conveying mechanism is an important power mechanism of the bucket elevator and is used for driving materials to be vertically lifted, the chain conveying mechanism generally comprises a driving wheel, a driven wheel and a chain, the driving wheel is driven by a motor, the chain is respectively engaged with the driving wheel and the driven wheel, and the driving wheel can drive the driven wheel to rotate under the normal condition of the chain; when the chain condition of breaking appears in the chain, the action wheel can not normally drive from the driving wheel rotation, consequently appears unusually from the rotation of driving wheel, wherein, bucket elevator chain breakage detection device includes:
The measuring template is a circular plate, is concentrically arranged at any end of the rotating shaft of the driven wheel, rotates when the driven wheel rotates, stops when the driven wheel stops rotating, and is provided with a through hole on the end surface; when the measuring die plate rotates, the through hole is close to and away from the proximity switch periodically, the proximity switch is switched on when the through hole is close to, and the proximity switch is switched off when the through hole is away from, so that the through hole can trigger the proximity switch to generate a periodic on or off signal.
the proximity switch is arranged on one side of the measuring die and corresponds to the through hole so as to be triggered and sensed by the through hole; the proximity switch is at a certain distance from the measuring die and can be triggered and sensed by the through hole.
and the control system is connected with the proximity switch and the motor. The proximity switch is connected to the control system through a periodic on or off signal, and the control system logically judges whether the driven wheel normally rotates or not, so that whether the chain conveying mechanism is broken or not is judged. And if the chain is judged to be broken, the control system controls the motor to stop rotating.
Firstly, the influence of unstable factors of a chain on measurement can be reduced through the design of combining a measurement template and a proximity switch, the measurement template is arranged at one end of a driven wheel and can rotate more stably, the proximity switch is further triggered stably to generate a signal, and finally a control system accurately judges whether the chain is broken or not, so that the measurement is more accurate; secondly, the measuring template has simple structure, flexible installation and small occupied space, and can not influence the normal operation of chains and other equipment; finally, the measuring template has low cost, less maintenance, saved fund and easy popularization.
Preferably, in the chain breakage detecting device for a bucket elevator, the through hole is circular. The circular shape is more regular, and the proximity switch can be triggered more stably.
Preferably, in the chain breakage detection device for the bucket elevator, four through holes are arranged, the four through holes are arranged in an annular array by taking the circle center of the measuring die as the center, and the adjacent through holes are arranged at equal intervals. The four through holes can trigger the proximity switch to send on-off signals, the four through holes are arranged at equal intervals, and therefore the triggered on-off signals are periodic.
Preferably, in the chain breakage detection device for the bucket elevator, a center hole is formed in the center of the measuring mold piece, the measuring mold piece is detachably sleeved into one end of the driven wheel rotating shaft, and a nut is matched with one end of the driven wheel rotating shaft to fix the measuring mold piece. The structure is convenient to disassemble and assemble.
Preferably, the chain breakage detection device of the bucket elevator further comprises an alarm, and the alarm is connected with the control system. And after the control system judges the chain breakage, a control signal is sent out to enable the alarm to give an alarm to prompt a worker to stop the motor from continuously rotating in time.
preferably, in the bucket elevator chain breakage detection device, the control system is a DCS control system. The distributed control system is a common control system and can receive signals of a proximity switch, a time relay, a trigger and a link breaking signal reset key are generally arranged in the DCS, an on-off signal of the proximity switch is connected into the time relay, the time relay carries out logic judgment, if the continuous existing time of any one of the on-off signal or the on-off signal exceeds a set value (such as 20 seconds), the link breaking is judged and a link breaking signal is sent to the trigger, and the trigger triggers a motor to stop running, so that the purpose of protecting equipment is achieved. When the chain breaking signal disappears, the trigger can be reset through the chain breaking signal reset key.
Preferably, in the bucket elevator chain breakage detecting apparatus, the proximity switch is provided on a side of the measurement template via an adjuster, and the adjuster includes:
the first end of the first telescopic rod is provided with an installation plate, the second end of the first telescopic rod is provided with an end rod joint bearing, and the end rod joint bearing is perpendicular to the first telescopic rod;
And the first end of the second telescopic rod is connected with the end rod joint bearing, the second end of the second telescopic rod is provided with a universal joint, the universal joint is provided with a sleeve, and the sleeve is used for sleeving the proximity switch.
The traditional method is to weld the proximity switch on a bracket of a bucket elevator directly through a support piece so as to achieve the purpose of installing and fixing the proximity switch, but once the support piece is welded, the relative position of the proximity switch and a measuring diaphragm cannot be adjusted. Therefore design regulating part replaces traditional support piece, and the mounting panel of first telescopic link is used for fixed with bucket elevator's support among the support piece, and end bar joint bearing allows the swing of second telescopic link, and the universal swing of universal joint operation proximity switch of second telescopic link is in order to change the angle, and in addition the scalability of first and second telescopic link itself for proximity switch adjustable scope grow, the installation is more nimble.
The utility model discloses at least, include following beneficial effect:
The utility model discloses a measure the die and install in chain conveying mechanism's the pivot from the driving wheel, seted up the through-hole on the measurement die, proximity switch corresponds the through-hole setting, when driving from the driving wheel and measuring the die and rotate, the through-hole is regularly close to and keeps away from proximity switch, and then triggers proximity switch's break-make more steadily, has reduced the influence of work complex environment and chain instability factor to proximity switch discernment, has improved the degree of accuracy of broken chain signal measurement.
the utility model discloses an adjusting part is used for installing fixed proximity switch, and the adjusting part has first telescopic link, end bar joint bearing, second telescopic link and universal joint, and the proximity switch cover can allow to carry out bigger spatial position's regulation on universal joint for the installation is more nimble.
The utility model discloses simple structure, simple installation, mistake signal are few, consequently the maintenance volume is few, practices thrift the fund cost.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a chain breakage detecting device of a bucket elevator according to the present invention;
Fig. 2 is a front view of a measurement template according to the present invention;
Fig. 3 is a schematic structural view of the adjusting member according to the present invention;
Fig. 4 is a frame diagram of the chain breakage detecting device of the bucket elevator of the present invention.
Detailed Description
the present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1, 2, 3 and 4, a chain breakage detection device for a bucket elevator is provided, wherein a chain conveying mechanism is arranged in the bucket elevator, the chain conveying mechanism is an important power mechanism of the bucket elevator and is used for driving materials to be vertically lifted, the chain conveying mechanism generally comprises a driving wheel, a driven wheel and a chain, the driving wheel is driven by a motor, the chain is respectively meshed with the driving wheel and the driven wheel, and under the condition that the chain is normal, the driving wheel can drive the driven wheel to rotate; when the chain condition of breaking appears in the chain, the action wheel can not normally drive from the driving wheel rotation, consequently appears unusually from the rotation of driving wheel, wherein, bucket elevator chain breakage detection device includes:
Specifically as shown in fig. 1 and 2, measurement die 1, it is circular plate, measurement die 1 sets up with one heart from arbitrary one end of driving wheel pivot in order to follow the rotation of driving wheel, through-hole 2 has been seted up on measurement die 1's the terminal surface, through-hole 2 is regular circular, through-hole 2 can be provided with four, and four through-holes 2 use the centre of a circle of measurement die 1 is the annular array setting as the center, and the equidistance sets up between the adjacent through-hole 2. The center of the circle of the measuring template 1 is provided with a center hole 3, the measuring template is detachably sleeved at one end of the driven wheel rotating shaft through the center hole 3, and one end of the driven wheel rotating shaft is matched with a nut 6 to fix the measuring template 1.
A proximity switch 4 disposed at one side of the measuring die 1 and corresponding to the through hole 2 to be triggered and sensed by the through hole; when the measuring die sheet 1 rotates along with the driven wheel, the through hole 2 is close to and away from the proximity switch 4 periodically, the proximity switch 4 is switched on when the through hole 2 is close to, and the proximity switch 4 is switched off when the through hole 2 is away from, so that the through hole 2 can trigger an on-off signal generated by the proximity switch 4, and the time interval of the on-off signal can be used as a measuring judgment basis of the control system 5.
And the control system 5 is connected with the proximity switch connection 4 and the motor. The on or off signal of the proximity switch is connected to the control system 5, and the control system logically judges whether the driven wheel normally rotates, so as to judge whether the chain conveying mechanism is broken. If the chain is broken, the control system 5 controls the motor to stop rotating.
Further, the alarm device is further included and connected with the control system 5. And after the control system judges the chain breakage, the control alarm gives an alarm to prompt a worker to cut off the material in time and stop the motor from rotating continuously.
Further, the control system is a DCS control system. Distributed control systems are commonly used control systems that are capable of receiving signals from proximity switches and performing corresponding control actions. The DCS control system is generally internally provided with a time relay, a trigger and a link breaking signal reset key, wherein an on-off signal of a proximity switch is connected into the time relay, the time relay performs logic judgment, if the continuous existing time of any one of the on-off signal exceeds a set value (such as 20 seconds), the on-off signal is judged to be a link breaking and a link breaking signal is sent to the trigger, and the trigger triggers a motor to stop running, so that the purpose of protecting equipment is achieved. When the chain breaking signal disappears, the trigger can be reset through the chain breaking signal reset key.
Further, as shown in fig. 3, the proximity switch 4 is disposed on one side of the measurement diaphragm 1 through an adjustment member 7, and the adjustment member 7 includes:
A first telescopic rod 9, a first end of which is provided with a mounting plate 8, a second end of which is provided with an end rod joint bearing 10, wherein the end rod joint bearing 10 is perpendicular to the first telescopic rod 9, so that a second telescopic rod 11 sleeved on the end rod joint bearing 10 is perpendicular to the first telescopic rod 9;
The first end of the second telescopic rod 11 is connected with the end rod knuckle bearing 10, the second end of the second telescopic rod is provided with a universal joint 12, a sleeve is arranged on the universal joint 12, and the sleeve is used for sleeving the proximity switch.
The utility model discloses an implementation as follows:
the position of the proximity switch is adjusted through the adjusting piece, so that the proximity switch corresponds to a through hole in a measuring matrix, under the normal working condition, the rotating measuring matrix regularly triggers the on-off of the proximity switch, when a chain is broken, the measuring matrix cannot trigger the regular on-off of the proximity switch, the DCS control system receives an on-off signal of the proximity switch, and when the on-off signal is irregular, the motor is controlled to stop rotating and the alarm gives an alarm.
while embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art.
Claims (7)
1. The utility model provides a bucket elevator chain breakage detection device, be provided with chain conveyor in the bucket elevator, chain conveyor includes the action wheel, follows driving wheel and chain, and the action wheel is by motor drive, its characterized in that includes:
The measuring template is a circular plate, the measuring template is concentrically arranged at any end of the rotating shaft of the driven wheel, and a through hole is formed in the end face of the measuring template;
the proximity switch is arranged on one side of the measuring die and corresponds to the through hole so as to be triggered and sensed by the through hole;
And the control system is connected with the proximity switch and the motor.
2. The chain breakage detecting device for the bucket elevator as claimed in claim 1, wherein the through hole is circular.
3. The chain breakage detecting device for the bucket elevator as claimed in claim 2, wherein the number of the through holes is four, the four through holes are arranged in an annular array with the center of the measuring mold plate as the center, and the adjacent through holes are arranged at equal intervals.
4. The chain breakage detecting device for the bucket elevator as claimed in claim 3, wherein a center hole is formed in the center of the measuring mold piece, the measuring mold piece is detachably sleeved on one end of the driven wheel rotating shaft, and a nut is fitted on one end of the driven wheel rotating shaft to fix the measuring mold piece.
5. The chain breakage detecting device for the bucket elevator as claimed in claim 1, further comprising an alarm connected to the control system.
6. The chain breakage detecting device for the bucket elevator as set forth in claim 1, wherein the control system is a DCS control system.
7. The chain breakage detecting device for the bucket elevator as claimed in claim 1, wherein the proximity switch is provided on a side of the measuring diaphragm by an adjusting member, and the adjusting member comprises:
The first end of the first telescopic rod is provided with an installation plate, the second end of the first telescopic rod is provided with an end rod joint bearing, and the end rod joint bearing is perpendicular to the first telescopic rod;
And the first end of the second telescopic rod is connected with the end rod joint bearing, the second end of the second telescopic rod is provided with a universal joint, the universal joint is provided with a sleeve, and the sleeve is used for sleeving the proximity switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372338.8U CN209740056U (en) | 2019-03-22 | 2019-03-22 | Chain breakage detection device for bucket elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372338.8U CN209740056U (en) | 2019-03-22 | 2019-03-22 | Chain breakage detection device for bucket elevator |
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| Publication Number | Publication Date |
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| CN209740056U true CN209740056U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920372338.8U Active CN209740056U (en) | 2019-03-22 | 2019-03-22 | Chain breakage detection device for bucket elevator |
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| CN (1) | CN209740056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604598A (en) * | 2022-03-28 | 2022-06-10 | 北京科技大学 | Belt conveyor rewinding and belt breakage detection device and method |
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2019
- 2019-03-22 CN CN201920372338.8U patent/CN209740056U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604598A (en) * | 2022-03-28 | 2022-06-10 | 北京科技大学 | Belt conveyor rewinding and belt breakage detection device and method |
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