CN111503241A - Pulley for traction system, safety detection equipment and traction system - Google Patents
Pulley for traction system, safety detection equipment and traction system Download PDFInfo
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- CN111503241A CN111503241A CN202010324592.8A CN202010324592A CN111503241A CN 111503241 A CN111503241 A CN 111503241A CN 202010324592 A CN202010324592 A CN 202010324592A CN 111503241 A CN111503241 A CN 111503241A
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- pulley
- signal
- processor
- traction system
- wire rope
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/50—Features essential to rope pulleys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a pulley for a traction system, safety detection equipment and the traction system. Wherein, traction system uses the pulley to be equipped with the grooving that is used for guiding traction system's wire rope, and this pulley still includes: the signal processing device is used for detecting whether the pulley rotates under the driving of a steel wire rope of the traction system or not and generating a first signal based on the rotation of the pulley; and the wireless signal transmitting device is connected with the signal processing device and is used for transmitting the first signal to the control device for carrying out safety detection on the traction system. The signal processing device in the embodiment of the invention can generate a first signal for the pulley driven by the steel wire rope, and sends the first signal to the control device for carrying out safety detection on the traction system through the wireless signal generating device, so that whether the traction system has a fault related to the operation of the steel wire rope in the working process can be judged based on the first signal, the safety accident caused by the separation of the steel wire rope from the rope groove of the pulley is effectively avoided, the operation safety of the traction system is improved, and the installation and the maintenance are convenient compared with the traditional detection mode of the rope blocking rod.
Description
Technical Field
The invention relates to a traction system, in particular to a pulley for the traction system, safety detection equipment and the traction system.
Background
For a power traction system containing a steel wire rope, pulleys are mostly needed, the running direction of the steel wire rope can be changed through the pulleys, and the traction multiplying power of the steel wire rope can also be increased, so that the traction force is increased.
In the related art, in the operation process of the traction system of the steel wire rope and pulley combination, because the steel wire rope is flexible, the steel wire rope is possibly separated from a pulley rope groove in the change from a slack state to a tension state or in the rapid operation process, and after the steel wire rope is separated from the pulley and operates for a period of time, the direct consequence is that: the steel wire rope is ground off, or the peripheral structural part is ground off. In the field of tower cranes, a plurality of users are easy to manage the daily maintenance of the tower crane, a steel wire rope frequently jumps out of a pulley and then continues to run, the running steel wire rope damages a structural member of the tower crane like a steel saw, and after a long time, a light person can injure the structural member or break the steel wire rope, and a heavy person can break the structural member, thereby causing serious safety accidents.
Based on this, in the related art, often install one or more rope blocking pole in the pulley outer lane, rope blocking pole and pulley interval are close enough for wire rope can not deviate from in the grooving of pulley, and the emergence of above-mentioned accident has partly been stopped. However, since the pulley and the rope blocking rod are independently installed, once the processing and manufacturing error is too large, the situation that the steel wire rope is separated from the groove (namely, the steel wire rope is separated from the groove of the pulley) often occurs, and if the situation is not found in time, great potential safety hazards exist.
Disclosure of Invention
In view of this, the embodiment of the invention provides a pulley for a traction system, a safety detection device and a traction system, and aims to effectively improve the operation safety of the traction system based on a steel wire rope.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a pulley for a traction system, which is provided with a rope groove for guiding a steel wire rope of the traction system, and the pulley also comprises:
the signal processing device is used for detecting whether the pulley rotates under the driving of a steel wire rope of a traction system or not and generating a first signal based on the rotation of the pulley;
and the wireless signal sending device is connected with the signal processing device and is used for sending the first signal to a control device for carrying out safety detection on the operation of a steel wire rope of the traction system.
In some embodiments, the signal processing apparatus comprises:
the action switch is used for acting when the rotating speed of the pulley reaches a set speed;
the first processor is connected with the action switch and used for generating the first signal based on the action of the action switch;
and the battery is connected with the first processor and the wireless signal transmitting device and used for supplying power to the first processor and the wireless signal transmitting device.
In some embodiments, the action switch is disposed on a power supply circuit for supplying power to the first processor and the wireless signal transmitting device by the battery, and acts to connect the power supply circuit when the rotation speed of the pulley reaches a set rotation speed, and the first processor is configured to generate the first signal in a charged state.
In some embodiments, the power supply circuit of the battery is in communication with the first processor and the wireless signal transmitting device, the first processor being configured to generate the first signal in response to actuation of the actuation switch.
In some embodiments, the first processor is configured to control the wireless signal transmitting device to transmit the first signal at a set frequency on the condition that it is determined that the rotation speed of the pulley reaches a set rotation speed, where the first signal carries identification information for identifying an identity of the pulley.
In some embodiments, a pulley body of the pulley is provided with a vent hole and an air inducing cavity communicated with the vent hole, and the signal processing device includes:
a second processor;
the wind power generation device is arranged in the induced draft cavity, is used for generating power under the action of wind power, is connected with the second processor and the wireless signal sending device, and is used for supplying power to the second processor and the wireless signal sending device;
the action switch is connected with the second processor and is used for acting when the rotating speed of the pulley reaches a set speed;
the second processor is configured to generate the first signal based on an action of the action switch.
In some embodiments, a pulley body of the pulley is provided with a vent hole and an air inducing cavity communicated with the vent hole, and the signal processing device includes:
the wind power generation device is arranged in the induced draft cavity and used for generating power under the action of wind power;
the centrifugal locking mechanism is connected with the wind power generation device and used for unlocking the wind power generation device when the pulley is driven by the steel wire rope to rotate to reach a set speed and locking the wind power generation device when the rotation of the pulley does not reach the set rotating speed;
and the second processor is connected with the wind power generation device and used for generating the first signal based on the power supply provided by the wind power generation device.
In some embodiments, the centrifugal locking mechanism comprises:
spring part and locking piece, the spring part have first state when the rotational speed of pulley reaches the settlement rotational speed and the rotational speed of pulley does not reach the second state when setting for the rotational speed, the locking piece is connected the spring part is used for unblock under the first state wind power generation set reaches the locking under the second state wind power generation set.
In some embodiments, the second processor is configured to control the wireless signal transmitting device to transmit the first signal at a set frequency on the condition that it is determined that the rotation speed of the pulley reaches a set rotation speed, where the first signal carries identification information for identifying the identity of the pulley.
The embodiment of the invention also provides a safety detection device for the traction system, which comprises:
a control device and at least one pulley as described in any of the previous embodiments, the control device comprising: the wireless receiving module is used for receiving first signals sent by the pulleys; the control device is used for determining whether the fault related to the operation of the steel wire rope occurs in the traction system or not based on whether each pulley sends the first signal or not in the traction process of the traction system.
The embodiment of the invention also provides a traction system which comprises a traction power source, a steel wire rope connected with the traction power source and the safety detection equipment in the embodiment.
According to the technical scheme provided by the embodiment of the invention, the pulley is provided with the signal processing device and the wireless signal sending device, the signal processing device can generate the first signal for the pulley driven by the steel wire rope, and the first signal is sent to the control device for carrying out safety detection on the operation of the steel wire rope of the traction system through the wireless signal generating device, so that whether the fault related to the operation of the steel wire rope occurs in the traction system in the working process can be judged based on the first signal, the safety accident caused by the fact that the steel wire rope is separated from a rope groove of the pulley is effectively avoided, and the operation safety of the traction system is improved.
Drawings
FIG. 1 is an electrical schematic diagram of a pulley according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pulley according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a pulley according to another embodiment of the present invention;
FIG. 4 is a schematic perspective view of a pulley according to an embodiment of the present invention;
FIG. 5 is a cross-sectional schematic view of the pulley shown in FIG. 4;
FIG. 6 is an enlarged schematic view at A in FIG. 5;
FIG. 7 is a schematic structural view of a wind-guiding chamber of a pulley according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a traction system according to an embodiment of the present invention.
Description of reference numerals:
1. a pulley; 11. a pulley body; 12. a signal processing device; 13. a wireless signal transmitting device;
111. rope grooves; 112. a vent hole; 113. a wind-guiding cavity;
121. an action switch; 122. a first processor; 123. a battery;
124. a wind power generation device; 125. a centrifugal locking mechanism; 126. a second processor;
1251. a spring member; 1252. a locking block; 1253. a spring end cap;
2. a control device; 3. a source of tractive power; 4. a steel cord.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In the related art, one or more rope blocking rods are often installed on the outer ring of the pulley, so that the steel wire rope cannot be separated from the pulley groove. The rope blocking rod needs to be independently installed, and potential safety hazards caused by overlarge machining errors often exist. Taking the tower crane manufacturing industry as an example, because the manufacturing threshold that the tower crane is relevant is low, and the processing level and the technical degree of difficulty are all little, and the level of manufacturing enterprise is also uneven, and the user that the tower crane faced also requires to have the height to have, just also is different greatly to the operation management of equipment, because the incident that the wire rope jumps and leads to takes place in the time of, in addition, and because pulley and rope blocking pole all install independently, often also increased the degree of difficulty of managing the processingquality, lead to the problem such as the safety in effective supervision trade.
Based on this, in various embodiments of the present invention, by providing the signal processing device and the wireless signal transmitting device on the pulley, the signal processing device can generate the first signal for the pulley driven by the steel wire rope, and transmit the first signal to the control device for performing safety detection on the operation of the steel wire rope of the traction system through the wireless signal generating device, so as to determine whether the fault related to the operation of the steel wire rope occurs in the traction system in the working process based on the first signal, effectively avoid the safety accident caused by the steel wire rope breaking from the rope groove of the pulley, and improve the operation safety of the traction system.
The embodiment of the invention provides a pulley for a traction system, which is provided with a rope groove for guiding a steel wire rope of the traction system. As shown in fig. 1, the pulley further includes: the device comprises a signal processing device 12 and a wireless signal sending device 13, wherein the signal processing device 12 is used for detecting whether a pulley rotates under the driving of a steel wire rope of a traction system or not and generating a first signal based on the rotation of the pulley; the wireless signal transmitting device 13 is connected to the signal processing device 12, and is configured to transmit the first signal to a control device for performing safety detection on the traction system, so as to indicate whether a failure related to operation of the steel wire rope exists in the corresponding pulley.
In practical application, the pulley includes pulley body 11, and pulley body 11's periphery is along being equipped with the grooving 111 that is used for guiding wire rope, can effectively avoid wire rope to break away from the pulley, and play the guide effect to wire rope. The pulley body 11 is fixed by a bearing in the axial hole and can rotate under the drive of a steel wire rope. If the wire rope corresponding to the pulley is not separated from the rope groove 111, the signal processing device 12 may detect the rotation of the pulley, generate a first signal based on the rotation of the pulley, and send the generated first signal to the control device of the traction system through the wireless signal sending device 13, so that the control device may determine whether the wire rope at the corresponding pulley has a fault related to the operation of the wire rope based on whether the first signal is received.
Here, the signal processing device 12 may generate the first signal based on whether the detected rotation speed of the pulley reaches the set rotation speed, and if the rotation speed of the pulley reaches the set rotation speed, it indicates that the pulley can rotate along with the wire rope, the wire rope is in the rope groove 111 of the pulley, and the traction system does not have a groove-releasing fault of the wire rope. And if the pulley does not rotate or the rotating speed does not reach the set rotating speed, determining that the fault related to the operation of the steel wire rope exists in the traction system. Here, the failure related to the operation of the wire rope includes: 1. the steel wire rope is separated from the rope groove 111 of the pulley, namely the groove separation fault occurs; 2. the electrical devices of the pulley (i.e. the aforementioned signal processing device 12 and/or wireless signal transmitting device 13) are malfunctioning; 3. when the pulley breaks down, for example, the pulley is damaged or the bearing of the pulley is damaged, maintenance personnel is needed to overhaul the pulley in time, and the fault that the steel wire rope breaks away from the groove can be found effectively in time. Here, the set rotation speed may be set according to a detection requirement, and may be set to zero or determine whether the centrifugal force of the pulley under rotation reaches a set required rotation speed value.
In some embodiments, in order to facilitate timely maintenance of a failed pulley, the first signal generated by the signal processing device 12 further carries identification information for identifying the identity of the pulley, so that the first signals corresponding to different pulleys can be distinguished, and the pulleys corresponding to the failure related to normal operation and operation of the steel wire rope can be accurately distinguished.
In an application example, each pulley under the traction system can be coded, a corresponding serial number is distributed, a first signal sent by each pulley carries the corresponding serial number, and the control device side of the traction system stores the serial number corresponding to each pulley.
In the embodiment of the present invention, the Wireless signal sending device 13 employs a Wireless transmission module, which may include, but is not limited to, at least one of a bluetooth module, a Wi-Fi (Wireless Fidelity) module, a Zigbee module, a 2G module, a 3G module, a 4G module, a 5G module, an ethernet module, an NB-IOT (Narrow Band Internet of Things) module, an eMTC (enhanced machine Type Communication) module, an L oRa (L ong Range) module, and a Sigfox module, wherein the Zigbee module is short-Range Wireless Communication technology, which is proposed by the IEEE802.15 working group and is specified by the TG4 working group, the L oRa module and the Sigfox module are both low-power wide area network (pw L a) Wireless Communication technologies.
In some embodiments, as shown in fig. 2, the signal processing device 12 includes: an action switch 121, a first processor 122 and a battery 123. The action switch 121 is used for acting when the rotation speed of the pulley reaches a set speed; the first processor 122 is connected to the motion switch 121, and is configured to generate the first signal based on the motion of the motion switch; the battery 123 is connected to the first processor 122 and the wireless signal transmitting device 13, and is used for supplying power to the operation switch 121 and the wireless signal transmitting device 13.
Here, the operation switch 121 may be a centrifugal switch. When the rotating speed of the pulley reaches the set rotating speed, the centrifugal switch acts under the action of the centrifugal force of the pulley.
In an application example, the action switch 121 is disposed on a power supply circuit for supplying power to the first processor 122 and the wireless signal transmitting device 13 through the battery 123, and is actuated when the rotation speed of the pulley reaches a set rotation speed to connect the power supply circuit, and the first processor is configured to generate a first signal in a charged state and transmit the first signal through the wireless signal transmitting device. If the rotation speed of the pulley is reduced or stopped, and the rotation speed of the pulley does not reach the set rotation speed, the action switch 121 is reset, the power supply circuit is disconnected, the first processor and the wireless signal transmitting device lose power, the first signal cannot be continuously transmitted, and correspondingly, the control device of the traction system cannot receive the first signal of the pulley, so that fault prompt information can be generated.
In another application example, the power supply circuit of the battery 123 directly communicates with the first processor 122 and the wireless signal transmitting device 13, and the first processor 122 is configured to generate the first signal in response to the action of the action switch. For example, the centrifugal switch may be connected to an IO port of the first processor, and the centrifugal switch may be set to be in a normally open state, so that when the rotation speed of the pulley reaches a set rotation speed, the centrifugal switch is triggered to act under the action of the centrifugal force of the pulley, and the first processor 122 generates the first signal in response to the closing of the centrifugal switch. Alternatively, the centrifugal switch may be set to a normally closed state, and the first processor 122 may generate the first signal in response to the centrifugal switch being turned off when the rotational speed of the pulley reaches a set rotational speed, such that the centrifugal switch is triggered by the centrifugal force of the pulley. The first signal may indicate whether a rope running-related failure of the rope of the corresponding pulley occurs.
In some embodiments, the first processor 122 is configured to control the wireless signal transmitting device to transmit a first signal at a set frequency under the condition that the rotation speed of the pulley is determined to reach the set rotation speed, where the first signal carries identification information for identifying the identity of the pulley. Here, the setting frequency may be set appropriately according to the requirement, for example, every 5 minutes may be set, so that the transmission frequency of the first signal may be reduced, which is beneficial to saving power consumption and reducing interference of the wireless signal. Specifically, when the action switch is located on a power supply circuit of the battery, as long as the rotation speed of the pulley reaches a set rotation speed, the power supply circuit is continuously conducted, the first processor can control the wireless signal transmitting device to periodically transmit a first signal carrying identification information of the pulley, if the rotation speed of the pulley is less than the set rotation speed, the power supply circuit is disconnected, the first processor and the wireless signal transmitting device lose power and cannot transmit the first signal, and therefore a control device of the traction system cannot receive the first signal corresponding to the pulley. When the action switch is directly connected with the first processor, the action switch is operated and maintained in a normally open state or a normally closed state as long as the rotating speed of the pulley reaches a set rotating speed, the first processor can control the wireless signal transmitting device to periodically transmit a first signal carrying identification information of the pulley based on the state after the action of the action switch, if the rotating speed of the pulley is less than the set rotating speed, the action switch is reset, the first processor stops transmitting the first signal, and the control device of the traction system cannot receive the first signal corresponding to the pulley.
Because the foregoing embodiments require the battery 123 to supply power, the maintenance workload of the traction system is increased, and particularly in the case of a large number of pulleys, based on this, in some embodiments, the pulley body 11 of the pulley is provided with the vent hole 112 and the air inducing cavity 113 communicated with the vent hole 112, and the signal processing device 12 includes the wind power generating device 124 disposed in the air inducing cavity 113, and the power generated by the wind power generating device 124 is used to supply power, so that the maintenance of the battery 123 can be omitted.
As shown in fig. 3-7, in some embodiments, the signal processing device 12 includes: wind power generation device 124, centrifugal locking mechanism 125 and second processor 126. The wind power generation device 124 is arranged in the wind induction cavity 113 and used for generating power under the action of wind power; the centrifugal locking mechanism 125 is connected with the wind power generation device 124 and is used for unlocking the wind power generation device 124 when the pulley is driven by the steel wire rope to rotate to reach a set speed and locking the wind power generation device 124 when the rotation of the pulley does not reach the set rotating speed; the second processor 126 is connected to the wind power generator 124 for generating and transmitting the first signal based on the power supplied by the wind power generator 124.
As shown in fig. 6, in some embodiments, centrifugal locking mechanism 125 includes: the lock device comprises a spring member 1251 and a lock block 1252, wherein the spring member 1251 has a first state when the rotation speed of the pulley reaches a set rotation speed and a second state when the rotation speed of the pulley does not reach the set rotation speed, and the lock block 1252 is connected with the spring member 1251 and is used for unlocking the wind power generation device 124 in the first state and locking the wind power generation device 124 in the second state.
In practical applications, as shown in fig. 6, the centrifugal locking mechanism 125 further includes: the spring end cover 1253 is fixed on the pulley body 11, one end of the spring element 1251 abuts against the spring end cover 1253, the other end of the spring element 1251 is connected with the locking block 1252, and the other end of the locking block 1252 faces towards the blade of the wind power generation device 124. When the pulley is driven by the wire rope to rotate and the rotation speed reaches the set rotation speed, so that the generated centrifugal force can overcome the elastic force of the spring, the spring member 1251 enters the first state, at this time, the locking block 1252 is disengaged from the blade of the wind power generation device 124, the airflow introduced through the air vent 112 flows in the air induction cavity 113 (as shown by the arrow in fig. 7), the blade of the wind power generation device 124 can be blown in the air induction cavity 113, so as to drive the wind power generation device 124 to generate electricity, the electric energy generated by the wind power generation device 124 supplies power to the second processor 126 and the wireless signal transmitting device 13, so that the second processor 126 can generate the first signal and transmit the first signal through the wireless signal transmitting device 13. When the rotation speed of the pulley does not reach the set rotation speed, the spring member 1251 is kept in the second state by the elastic force of the spring member 1251, at this time, the locking block 1252 applies force inwards under the action of the spring member 1251 to lock the blade of the wind power generation device 124, the wind power generation device 124 cannot generate power, the second processor 126 and the wireless signal transmitting device 13 cannot work, and the detection device of the traction system cannot receive the first signal of the corresponding pulley.
In some embodiments, the second processor 126 is configured to control the wireless signal transmitting device to transmit a first signal at a set frequency under the condition that the rotation speed of the pulley is determined to reach the set rotation speed, where the first signal carries identification information for identifying the identity of the pulley. Here, the setting frequency may be set appropriately according to the requirement, for example, every 5 minutes may be set, so that the transmission frequency of the first signal may be reduced, thereby facilitating the interference of the wireless signal.
In some embodiments, the centrifugal locking mechanism 125 may be replaced by an action switch, that is, the signal processing device includes: wind power generator 124, operation switch, and second processor 126. The wind power generation device 124 is arranged in the induced draft cavity, is used for generating power under the action of wind power, is connected with the second processor 126 and the wireless signal sending device 13, and is used for supplying power to the second processor 126 and the wireless signal sending device 13; the action switch is connected with the second processor 126 and is used for acting when the rotating speed of the pulley reaches the set speed; the second processor 126 is configured to generate a first signal based on the actuation of the actuation switch.
Here, the motion switch may be a centrifugal switch. When the rotating speed of the pulley reaches the set rotating speed, the centrifugal switch acts under the action of the centrifugal force of the pulley. The second processor 126 and the wireless signal transmitting device 13 are powered by the wind power generation device 124, so that a battery in the pulley can be omitted, and the first signal is generated only after the second processor 126 detects the action of the centrifugal switch, so that whether the operation-related fault exists in the steel wire rope at the pulley can be indicated based on the first signal. The centrifugal switch can be arranged on a power supply circuit for supplying power to the second processor 126 and the wireless signal transmitting device 13 by the wind power generation device 124, and operates when the rotating speed of the pulley reaches a set rotating speed so as to be communicated with the power supply circuit, and the second processor is used for generating a first signal in a charged state; alternatively, the power supply circuit of the wind power generator 124 is directly connected to the second processor 126 and the wireless signal transmitter 13, the centrifugal switch is connected to the second processor 126, and the second processor 126 is configured to generate the first signal in response to the operation of the centrifugal switch.
It should be noted that the aforementioned first processor 122 or second processor 126 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable logic devices (P L D, Programmable L ic devices), complex Programmable logic devices (CP L D, complex Programmable L ic devices), FPGAs, general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components, and is used to perform the aforementioned operations.
The embodiment of the invention also provides a safety detection device for the traction system, which comprises:
a control device and at least one pulley of any of the preceding embodiments, the control device comprising: the wireless receiving module is used for receiving first signals sent by the pulleys; the control device is used for determining whether the fault related to the steel wire rope occurs in the traction system or not based on whether each pulley sends the first signal or not in the traction process of the traction system.
In practical application, the control device may obtain a signal for starting operation of the traction system, for example, the wireless receiving module receives a signal for operating a traction power source of the traction system, the control device determines whether a failure of the corresponding pulley in disengaging the steel wire rope exists based on whether the first signal of each pulley is received, and if the first signal of any pulley is not received within a set time period, it may be determined that the corresponding pulley has a failure related to operation of the steel wire rope. Specifically, the pulley that has not transmitted the first signal may be determined by comparison with the identification information of each pulley stored in advance based on the identification information of the pulley carried by the first signal, so that the position of the pulley in which a failure exists can be locked. The control device can also output fault prompt information through a human-computer interaction interface, for example, the fault prompt information is output in a voice, text or sound-light alarm mode.
It is understood that the wireless receiving module in the control device may include at least one of a bluetooth module, a Wi-Fi (wireless local area network) module, a Zigbee module, a 2G module, a 3G module, a 4G module, a 5G module, an ethernet module, an NB-IOT (Narrow Band Internet of Things) module, an eMTC (enhanced machine type Communication) module, an L oRa (L ong Range) module, and a Sigfox module.
The embodiment of the invention also provides a traction system, which comprises a traction power source 3, a steel wire rope 4 connected with the traction power source 3 and safety detection equipment of the embodiment, as shown in fig. 8. Specifically, the traction system comprises a plurality of pulleys 1 (such as the pulley A, B, C, D shown in fig. 8) for guiding the steel wire rope, the traction system further comprises a control device 2, the control device 2 can be connected with the traction power source 3 in a wired or wireless manner, the control device 3 can receive first signals sent by the respective pulleys 1 through the respective wireless signal sending devices 13 through the wireless signal receiving modules, and the control device 2 can determine whether the corresponding pulleys have faults related to the operation of the steel wire rope based on the result of whether the first signals of the corresponding sheaves are received, so that the faults related to the operation of the steel wire rope can be automatically monitored, the reliability and the safety of the operation of the traction system are improved, and safety accidents caused by the fact that the steel wire rope is out of the groove are avoided.
In some embodiments, the traction system is a crawler crane, a truck crane, a port or a tower crane.
It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In addition, the technical solutions described in the embodiments of the present invention may be arbitrarily combined without conflict.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A sheave for a traction system, the sheave being provided with rope grooves for guiding a wire rope of the traction system, characterized in that the sheave further comprises:
the signal processing device is used for detecting whether the pulley rotates under the driving of a steel wire rope of a traction system or not and generating a first signal based on the rotation of the pulley;
and the wireless signal sending device is connected with the signal processing device and is used for sending the first signal to a control device for carrying out safety detection on the operation of a steel wire rope of the traction system.
2. The pulley according to claim 1, wherein the signal processing means comprises:
the action switch is used for acting when the rotating speed of the pulley reaches a set speed;
the first processor is connected with the action switch and used for generating the first signal based on the action of the action switch;
and the battery is connected with the first processor and the wireless signal transmitting device and used for supplying power to the first processor and the wireless signal transmitting device.
3. The pulley according to claim 2,
the action switch is arranged on a power supply circuit for supplying power to the first processor and the wireless signal sending device by the battery, and acts when the rotating speed of the pulley reaches a set rotating speed so as to be communicated with the power supply circuit, and the first processor is used for generating the first signal in a charged state.
4. The pulley according to claim 2,
the power supply circuit of the battery is communicated with the first processor and the wireless signal transmitting device, and the first processor is used for responding to the action of the action switch and generating the first signal.
5. The pulley according to claim 3 or 4,
the first processor is used for controlling the wireless signal sending device to send the first signal at a set frequency under the condition that the rotation speed of the pulley is determined to reach a set rotation speed, and the first signal carries identification information for identifying the identity of the pulley.
6. The pulley according to claim 1, wherein a pulley body of the pulley is provided with a vent hole and an air inducing cavity communicated with the vent hole, and the signal processing device comprises:
a second processor;
the wind power generation device is arranged in the induced draft cavity, is used for generating power under the action of wind power, is connected with the second processor and the wireless signal sending device, and is used for supplying power to the second processor and the wireless signal sending device;
the action switch is connected with the second processor and is used for acting when the rotating speed of the pulley reaches a set speed;
the second processor is configured to generate the first signal based on an action of the action switch.
7. The pulley according to claim 1, wherein a pulley body of the pulley is provided with a vent hole and an air inducing cavity communicated with the vent hole, and the signal processing device comprises:
the wind power generation device is arranged in the induced draft cavity and used for generating power under the action of wind power;
the centrifugal locking mechanism is connected with the wind power generation device and used for unlocking the wind power generation device when the pulley is driven by the steel wire rope to rotate to reach a set speed and locking the wind power generation device when the rotation of the pulley does not reach the set rotating speed;
and the second processor is connected with the wind power generation device and used for generating the first signal based on the power supply provided by the wind power generation device.
8. The pulley according to claim 7, wherein the centrifugal locking mechanism comprises:
spring part and locking piece, the spring part have first state when the rotational speed of pulley reaches the settlement rotational speed and the rotational speed of pulley does not reach the second state when setting for the rotational speed, the locking piece is connected the spring part is used for unblock under the first state wind power generation set reaches the locking under the second state wind power generation set.
9. The pulley according to claim 6 or 7,
the second processor is used for controlling the wireless signal sending device to send the first signal at a set frequency under the condition that the rotation speed of the pulley is determined to reach a set rotation speed, and the first signal carries identification information for identifying the identity of the pulley.
10. A safety inspection apparatus for a traction system, comprising:
control device and at least one pulley according to any one of claims 1 to 9, the control device comprising: the wireless receiving module is used for receiving first signals sent by the pulleys; the control device is used for determining whether the fault related to the operation of the steel wire rope occurs in the traction system or not based on whether each pulley sends the first signal or not in the traction process of the traction system.
11. A traction system comprising a traction power source and a wire rope connecting the traction power source, further comprising the safety inspection device of claim 10.
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| CN202010324592.8A CN111503241B (en) | 2020-04-23 | 2020-04-23 | Pulley for traction system, safety detection equipment and traction system |
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| CN202010324592.8A CN111503241B (en) | 2020-04-23 | 2020-04-23 | Pulley for traction system, safety detection equipment and traction system |
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