CN205973481U - Prevent gnawing rail device, running gear and hoist - Google Patents
Prevent gnawing rail device, running gear and hoist Download PDFInfo
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- CN205973481U CN205973481U CN201620836268.3U CN201620836268U CN205973481U CN 205973481 U CN205973481 U CN 205973481U CN 201620836268 U CN201620836268 U CN 201620836268U CN 205973481 U CN205973481 U CN 205973481U
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Abstract
The utility model discloses a prevent gnawing rail device, running gear and hoist relates to transportation equipment technical field. Prevent gnawing the rail device, include: sensor, this sensor close on the wheel, just correspond orbital top and set up, specifically, the sensor is used for the relative position who detects orbital top face region and wheel to change to confirm whether the wheel is walked partially. The utility model discloses can solve preventing among the prior art and gnaw that the rail device is easy to be damaged and can't monitor the technical problem who becomes the fault point on the contrary.
Description
Technical field
This utility model is related to equipment technology field of transport, particularly to a kind of preventing gnawing rail device, walking mechanism and lifting
Machine.
Background technology
The walking mechanism (or crane) run on two parallel orbits, easily because two parallel orbit spans are big or vehicle with walking machine
The reason such as when structure range ability length or track installation linearity is poor, cause to wander off between wheel and track phenomenon, i.e. car
Wheel centrage and track centerline produce deviation, if this wanders off, phenomenon seriously, can lead to gnaw rail phenomenon.For example, wheel is in design
When monolateral wider 20mm than track, if then wheel center line and track centerline deviation are more than 20mm, will occur wheel rim with
Track side surfaces contact and wear and tear and produce the phenomenon of abnormal sound, namely the phenomenon that wanders off lead to gnaw rail phenomenon.
Because the wheel of walking mechanism is gnawed after rail, generally only can be increasingly serious, and lead to wheel abrasion aggravate,
Service life reduction, thus affect the safety of walking mechanism more seriously, therefore with scientific and technological development and progress, preventing gnawing rail device
Arise at the historic moment, it can play the effect preventing gnawing rail phenomenon between wheel and track.
At present, preventing gnawing rail device of the prior art is mainly the medial surface of in rail or lateral surface is provided with Distance-sensing
Device, and the distance between wheel and track side surfaces are detected by this range sensor, the distance signal detecting is transmitted simultaneously
To the electric-control system of walking mechanism, to judge whether wheel wanders off phenomenon, if electric-control system finds that wheel wanders off, by control
Converter processed is to adjust the speed of this wheel, thus realizing the purpose of correction of deviation, playing the effect preventing from gnawing rail.
However, present inventor finds, in existing preventing gnawing rail device, because (distance) sensor arranges in rail
Side, therefore walking mechanism (or crane), if wandering off phenomenon in running, are easily caused sensor and track
Side (or track other object) collide, thus causing to be arranged on the sensor degradation of side, and then lead to sensor
Do not simply fail to monitoring to wander off phenomenon, easily become trouble point on the contrary.
Utility model content
The purpose of this utility model is to provide a kind of preventing gnawing rail device, walking mechanism and crane, to solve existing skill
Preventing gnawing rail device in art is easily damaged and cannot be carried out monitoring the technical problem becoming trouble point on the contrary.
This utility model provides a kind of preventing gnawing rail device, including：Sensor, described sensor closes on wheel and corresponding rail
The top setting in road；Described sensor is used for detecting that the top end face region of described track is changed with the relative position of described wheel,
To determine whether described wheel wanders off.
Wherein, described sensor is proximity transducer；The detection range of described proximity transducer is：It is able to detect that described
The top end face of track, the bottom section of described track cannot be detected.
Wherein, described sensor is imageing sensor, and the detection signal of described image sensor is picture signal.
Specifically, the outside of described sensor is provided with protective cover.
With respect to prior art, preventing gnawing rail device described in the utility model has the advantage that：
In the preventing gnawing rail device that this utility model provides, including：Sensor, this sensor closes on wheel and respective carter
Top setting；And, sensor is used for detecting the relative position change with wheel for the top end face region of track, to determine wheel
Whether wander off.Thus analysis understands, in the preventing gnawing rail device that this utility model provides, because sensor closes on wheel setting, because
Whether this can in time detection wheel wander off phenomenon, and timely correction of deviation, prevents from gnawing rail；And, due to sensor position
In the top setting of track, even if therefore wheel wanders off phenomenon, also it is not result in that sensor and the side of track are touched
Hit such that it is able to the sensor of preventing gnawing rail device is easily damaged and cannot be carried out monitoring and become on the contrary in effectively solving prior art
The technical problem of trouble point.
This utility model also provides a kind of walking mechanism, including：Preventing gnawing rail device according to any of the above-described, and institute
The vehicle frame stating preventing gnawing rail device with described walking mechanism is connected.
During practical application, described walking mechanism also includes：The rail cleaner being connected with described vehicle frame；Described sensor is located at institute
State the side setting that rail cleaner closes on described wheel.
Wherein, described sensor is connected with described rail cleaner by support.
Specifically, described sensor is provided with two, and two described sensors are located at described wheel radial direction respectively
Both sides be correspondingly arranged.
Described walking mechanism and above-mentioned preventing gnawing rail device are had the advantage that identical with respect to prior art, and here is no longer superfluous
State.
This utility model reoffers a kind of crane, including：Preventing gnawing rail device according to any of the above-described；Or, root
According to the walking mechanism described in any of the above-described.
Wherein, two described walking mechanisms on two described tracks be arrangeding in parallel are at least included, and two
Described walking mechanism is oppositely arranged；Described in two described walking mechanisms being oppositely arranged and be located on same direct of travel two
Sensor all corresponds to the top setting of described track top end face inside edge；Or, be oppositely arranged two described walking mechanisms and
Two described sensors on same direct of travel all correspond to the top setting of described track top end face outer ledge.
Described crane and above-mentioned preventing gnawing rail device are had the advantage that identical with respect to prior art, and here is no longer superfluous
State.
Brief description
The accompanying drawing constituting a part of the present utility model is used for providing further understanding to of the present utility model, and this practicality is new
The schematic description and description of type is used for explaining this utility model, does not constitute to improper restriction of the present utility model.?
In accompanying drawing：
Structural representation when the preventing gnawing rail device that Fig. 1 provides for this utility model embodiment does not wander off；
Structural representation when the preventing gnawing rail device that Fig. 2 provides for this utility model embodiment wanders off；
The structural representation of the walking mechanism that Fig. 3 provides for this utility model embodiment；
The partial structural diagram of the walking mechanism that Fig. 4 provides for this utility model embodiment；
The distributed architecture schematic diagram of preventing gnawing rail device in the crane that Fig. 5 provides for this utility model embodiment.
In figure：
1- sensor；2- wheel；
3- track；4- protective cover；
5- walking mechanism；6- vehicle frame；
7- rail cleaner；8- support.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can
To be mutually combined.To describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Structural representation when the preventing gnawing rail device that Fig. 1 provides for this utility model embodiment does not wander off.
As shown in figure 1, this utility model embodiment provides a kind of preventing gnawing rail device, including：Sensor 1, sensor 1 closes on
The top setting of wheel 2 and respective carter 3；Sensor 1 is used for detecting the top end face region of track 3 and the relative position of wheel 2
Change, to determine whether wheel 2 wanders off.
With respect to prior art, the preventing gnawing rail device described in this utility model embodiment has the advantage that：
In the preventing gnawing rail device that this utility model embodiment provides, as shown in figure 1, including：Sensor 1, this sensor 1 faces
The top setting of nearly wheel 2 and respective carter 3；And, sensor 1 is used for detecting the top end face region of track 3 and wheel 2
Relative position changes, to determine whether wheel 2 wanders off.Thus analysis understands, the preventing gnawing rail dress that this utility model embodiment provides
In putting, arrange because sensor 1 closes on wheel 2, whether wander off phenomenon therefore, it is possible in time detection wheel 2, and entangle in time
Overgauge, prevent from gnawing rail；And, because sensor 1 is located at the top setting of track 3, even if therefore wheel 2 wanders off now
As being also not result in the sideways collisions of sensor 1 and track 3 such that it is able to preventing gnawing rail dress in effectively solving prior art
The sensor put is easily damaged and cannot be carried out monitoring the technical problem becoming trouble point on the contrary.
Herein it should be added that, the sensor is connected with processor, and processor is connected with converter, converter
It is connected with driver, and driver is connected with above-mentioned wheel；During specific works, sensor can detect the top end face area of track
Domain, and detection signal is sent to processor, processor can receive this detection signal, and judges whether detection signal becomes
Change, if detection signal changes it is determined that wheel wanders off, thus adjusting the rotating speed of motor by controlling converter, and then
The speed of service of adjustment wheel, to prevent from gnawing rail；If detection signal does not change it is determined that wheel does not wander off, thus frequency conversion
Controller continues to keep the current rotating speed of motor, to ensure the power wheel original speed of service of holding.During practical application,
Described processor can be CPU (Central Processing Unit), and described driver can be motor.
Specifically, when some wheel 2 occurs to wander off to inside track 3, frequency-variable controller then controls with this wheel 2 even
The motor connecing reduces rotating speed, and now the speed of service of this wheel 2 reduces, and another wheel speed of service on the other side is relatively
Soon such that it is able to promote the above-mentioned wheel 2 wandering off to start to be partial to the outside of track 3, and then the original inner side of counteracting wanders off, and plays
Prevent from gnawing the effect of rail；In the same manner, when some wheel 2 occurs to wander off to outside track 3, frequency-variable controller then controls and this car
The motor of wheel 2 connection improves rotating speed, and now the speed of service of this wheel 2 improves, and another wheel on the other side runs speed
Degree is relatively slowly such that it is able to promote the above-mentioned wheel 2 wandering off to start to be partial to the inner side of track 3, and then the original outside of counteracting wanders off,
Play the effect preventing from gnawing rail.
Additionally, deflecting to the inner side of track 3 to ensure that the sensor 1 of same wheel 2 can detect wheel 2,
Wheel 2 can be detected deflect to the outside of track 3 again, can arrange on same wheel 2 and above respective carter 3
Two sensors 1, and this two sensors 1 are located at the both sides of centrage of track 3 respectively and are symmetrical arranged；Wherein, a sensing
Device 1 is used for detecting the interior inclined of wheel 2, and another sensor 1 is used for detecting the outer inclined of wheel 2.
During practical application, in order to ensure sensor 1 can be used in detect track 3 top end face region relative with wheel 2
Change in location, to determine whether wheel 2 wanders off, ensures certainty of measurement simultaneously, controls Financial cost, the sensor 1 can be
Proximity transducer, and the detection range of this proximity transducer is：It is able to detect that the top end face of track 3, rail cannot be detected
The bottom section in road 3.For example：The detection range of proximity transducer is 10 millimeters, and the height of track 3 is 100 millimeters, then close
Sensor is only able to detect the top end face of track 3, the bottom section of track 3 cannot be detected.
Herein it should be added that, the Cleaning Principle of proximity transducer can be：(condenser type) proximity transducer by
High frequency generator and amplifier etc. form, and constitute a capacitor by sensor detection faces with the external world, participate in oscillation circuit work,
Initiate and be in oscillatory regime；When object proximity sensor detection faces pair, tank capacitance amount changes, and so that high frequency generator is shaken
Swing；Vibration and this two kinds of State Transferring of failure of oscillation change into binary switch signal for the amplified device of the signal of telecommunication.Additionally, condenser type connects
Nearly sensor can include metal sensor etc..
Below in conjunction with the accompanying drawings the work process of proximity transducer is described in detail.
Structural representation when the preventing gnawing rail device that Fig. 2 provides for this utility model embodiment wanders off.
As shown in figure 1, when the top of proximity transducer respective carter 3 top end face one lateral edges is arranged, then close to sensing
Device is able to detect that the top end face of track 3, and detection signal is sent to processor, and processor can receive this detection letter
Number；If as shown in Fig. 2 wheel 2 wanders off, proximity transducer cannot detect the top end face of track 3, be subject to itself simultaneously
The restriction of detection range, also cannot detect the bottom section of track 3, thus proximity transducer cannot produce detection signal to send out
Give processor, processor does not receive detection signal and then determines that detection signal changes (i.e. detection signal from have to no),
Namely determine the top end face region of track 3 and the relative position of wheel 2 changes, wheel 2 wanders off.
Or, when the top of proximity transducer respective carter 3 sidewall areas is arranged, then proximity transducer cannot detect rail
The top end face in road 3, the bottom section of track 3 also cannot be detected, that is, proximity transducer cannot produce detection signal to send
To processor, processor does not receive detection signal；If wheel 2 wanders off, proximity transducer is able to detect that track 3
Top end face, and detection signal is sent to processor, now processor can receive this detection signal and then determine detection letter
Number change (i.e. detection signal from scratch), namely determines that the top end face region of track 3 is occurred with the relative position of wheel 2
Change, wheel 2 wander off.
During practical application, do not consider Financial cost, the sensor 1 can also be imageing sensor, and this image sensing
The detection signal of device is picture signal；Specifically, when this picture signal is not inconsistent with setting image it is determined that wheel 2 wanders off.
Below in conjunction with the accompanying drawings the work process of imageing sensor is described in detail.
As shown in figure 1, when the top of proximity transducer respective carter 3 top end face one lateral edges is arranged, then image sensing
Device is able to detect that the top end face of track 3, and forms corresponding picture signal and be sent to processor, and processor can receive
This picture signal, and this picture signal with set image and be consistent that (i.e. picture signal and setting image are the top end of track 3
Face)；If as shown in Fig. 2 wheel 2 wanders off, imageing sensor cannot detect the top end face of track 3, can only detect
To the bottom section of track 3, and form corresponding picture signal and be sent to processor, now processor receive picture signal with
Set image be not inconsistent (i.e. 3 bottom section as track for the picture signal, set image as the top end face of track 3) it is determined that
The top end face region of track 3 and the relative position of wheel 2 change, wheel 2 wanders off.
Or, when the top of imageing sensor respective carter 3 sidewall areas is arranged, then imageing sensor is able to detect that rail
The bottom section in road 3, and form corresponding picture signal and be sent to processor, processor can receive this picture signal, and
This picture signal is consistent (i.e. picture signal and setting image are the bottom section of track 3) with setting image；As shown in Fig. 2
If wheel 2 wanders off, imageing sensor cannot detect the bottom section of track 3, is only able to detect the top end of track 3
Face, and form corresponding picture signal and be sent to processor, now processor receives picture signal and is not inconsistent (i.e. with setting image
Picture signal is 3 top end face of track, sets image as the bottom section of track 3) it is determined that the top end face area of track 3
Domain and the relative position of wheel 2 change, wheel 2 wanders off.
Herein it should be added that, in the preventing gnawing rail device that this utility model embodiment provides, the sensor 1 is also
Can be range sensor, for example：Laser sensor or infrared sensor etc..Range sensor is by launching light pulse, and
Measure this light pulse from being transmitted into the time being reflected by the object, by survey time interval calculate and object between away from
From；Specifically, due to the distance between the top end face of range sensor and track 3 relatively near and the bottom section of track 3 between
Distant, the reflex time of the therefore light pulse of range sensor transmitting is different, thus range sensor can detect rail
The top end face region in road 3 is changed with the relative position of wheel 2, to determine whether wheel 2 wanders off.
Further, in order to avoid sensor 1 is subject to wind and weather, its service life, this utility model embodiment are affected
In the preventing gnawing rail device providing, as depicted in figs. 1 and 2, the outside of the sensor 1 can be provided with protective cover 4, thus passing through
This protective cover 4 plays the effect of rain-proof dust-proof, and then is prevented effectively from sensor 1 and lost efficacy because of wind and weather, and effectively improves biography
The service life of sensor 1.When actual production manufactures, above-mentioned protective cover 4 can be blister pack or bell glass etc., as long as not shadow
Ring normally detecting of sensor 1.
The structural representation of the walking mechanism that Fig. 3 provides for this utility model embodiment；Fig. 4 is this utility model embodiment
The partial structural diagram of the walking mechanism providing.
This utility model embodiment also provides a kind of walking mechanism, as shown in Figure 3 and Figure 4, including：According to any of the above-described
Described preventing gnawing rail device, and this preventing gnawing rail device is connected with the vehicle frame 6 of walking mechanism 5.Due in terms of existing technologies,
The preventing gnawing rail device that this utility model embodiment provides can be prevented effectively from the sideways collisions of sensor 1 and track 3, therefore
The walking mechanism 5 that this utility model embodiment provides also can be prevented effectively from the sideways collisions of sensor 1 and track 3.
During practical application, because the top of track 3 or side have wisp and lose, the therefore wisp in order to fall to something lost
Cleared up, it is to avoid it is collided with sensor 1, as shown in Figure 3 and Figure 4, above-mentioned walking mechanism 5 can also include：With car
The rail cleaner 7 that frame 6 connects；During concrete assembling, sensor 1 may be located at the side setting that rail cleaner 7 closes on wheel 2, thus losing
The wisp falling can first be contacted with rail cleaner 7, and pushing away away from track 3 under the effect of sweeping in rail cleaner 7, and then can be prevented effectively from
It is collided with sensor 1, namely rail cleaner 7 can play protection sensor 1 and the effect of whole walking mechanism 5.
Wherein, for the ease of the assembling of sensor 1, and ensure its stability, reasonable Arrangement sensor 1 is concrete simultaneously
Installation site, in the walking mechanism that this utility model embodiment provides, as shown in Figure 3 and Figure 4, the sensor 1 can pass through
Support 8 is connected with rail cleaner 7.
Herein it should be added that, actual production manufacture when, above-mentioned protective cover 4 and support 8 can be set to jointly
One supports guard member, and that is, this support guard member can either play support sensor 1 in order to the effect installed, and can play again
Protection sensor 1 is to prevent it by the effect of wind and weather.
Specifically, as shown in figure 3, the sensor 1 can be provided with two, and two sensors 1 are located at wheel 2 respectively
The both sides of radial direction are correspondingly arranged, and from regardless of whether walking mechanism 5 is positive walking or reverse walking, sensor 1 all can play
Preventing gnawing rail effect well.
The distributed architecture schematic diagram of preventing gnawing rail device in the crane that Fig. 5 provides for this utility model embodiment.
This utility model embodiment reoffers a kind of crane, as shown in figure 5, including：According to any of the above-described
Preventing gnawing rail device；Or, the walking mechanism 5 according to any of the above-described.
Wherein, as shown in figure 5, in the crane of this utility model embodiment offer, at least including parallel positioned at two
Two walking mechanisms 5 on the track 3 of setting, and two walking mechanisms 5 are oppositely arranged.Preferably, in order to improve accuracy of detection,
Ensure simultaneously preventing gnawing rail device can either prevent wheel 2 occur interior partially, be prevented from again wheel 2 occur outer partially, during practical set,
Inside two walking mechanisms 5 being oppositely arranged and equal respective carter 3 top end face of two sensors 1 being located on same direct of travel
The top setting at edge；Or, be oppositely arranged two walking mechanisms 5 and be located at same direct of travel on two sensors 1 equal
The top setting of respective carter 3 top end face outer ledge；Certainly, can also position on a direct of travel of same walking mechanism 5
It is symmetrically arranged with two sensors 1 in the both sides of the centrage of track 3.
Herein it should be added that, this utility model embodiment provide crane can include gantry crane,
Bridge crane etc., this is not restricted.
Preventing gnawing rail device, walking mechanism and crane that this utility model embodiment provides, assist without paraprofessional personnel, that is,
Rectifying a deviation and preventing from gnawing rail of wheel can voluntarily be completed, effectively increase the service life of wheel and walking mechanism and crane
Safety in operation；And, preventing gnawing rail equipment safety is reliable, economical and practical.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Within the spirit of utility model and principle, any modification, equivalent substitution and improvement made etc., should be included in this utility model
Protection domain within.
Claims (10)
1. a kind of preventing gnawing rail device is it is characterised in that include：Sensor (1), described sensor (1) is arranged on vehicle frame (6)；
Described sensor (1) closes on the top setting of wheel (2) and respective carter (3)；
Described sensor (1) is used for detecting that the top end face region of described track (3) is changed with the relative position of described wheel (2),
To determine whether described wheel (2) wanders off.
2. preventing gnawing rail device according to claim 1 is it is characterised in that described sensor (1) is proximity transducer；Described
The detection range of proximity transducer is：It is able to detect that the top end face of described track (3), described track (3) cannot be detected
Bottom section.
3. preventing gnawing rail device according to claim 1 is it is characterised in that described sensor (1) is imageing sensor, and institute
The detection signal stating imageing sensor is picture signal.
4. preventing gnawing rail device according to claim 3 is it is characterised in that the outside of described sensor (1) is provided with protection
Cover (4).
5. a kind of walking mechanism is it is characterised in that include：Preventing gnawing rail dress according to any one of the claims 1-4
Put, and described preventing gnawing rail device is connected with the vehicle frame (6) of described walking mechanism (5).
6. walking mechanism according to claim 5 is it is characterised in that also include：The rail cleaner being connected with described vehicle frame (6)
(7)；Described sensor (1) closes on the side setting of described wheel (2) positioned at described rail cleaner (7).
7. walking mechanism according to claim 6 is it is characterised in that described sensor (1) is clear with described by support (8)
Rail device (7) connects.
8. walking mechanism according to claim 5 is it is characterised in that described sensor (1) is provided with two, and two institutes
State sensor (1) to be correspondingly arranged positioned at the both sides of described wheel (2) radial direction respectively.
9. a kind of crane is it is characterised in that include：Preventing gnawing rail device according to any one of the claims 1-4；
Or, the walking mechanism (5) according to any one of the claims 5-8.
10. crane according to claim 9 it is characterised in that at least include positioned at two be arranged in parallel described in
Two on track (3) described walking mechanisms (5), and two described walking mechanisms (5) are oppositely arranged；
Two described walking mechanisms (5) being oppositely arranged and two described sensors (1) being located on same direct of travel are all right
Answer the top setting of described track (3) top end face inside edge；
Or, be oppositely arranged two described walking mechanisms (5) and two described sensors (1) being located on same direct of travel are all
The top setting of corresponding described track (3) top end face outer ledge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836268.3U CN205973481U (en) | 2016-08-03 | 2016-08-03 | Prevent gnawing rail device, running gear and hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836268.3U CN205973481U (en) | 2016-08-03 | 2016-08-03 | Prevent gnawing rail device, running gear and hoist |
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| Publication Number | Publication Date |
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| CN205973481U true CN205973481U (en) | 2017-02-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111847240A (en) * | 2020-07-15 | 2020-10-30 | 上海海事大学 | Crane synchronization error measuring device and deviation rectifying method thereof |
| CN112701213A (en) * | 2020-12-22 | 2021-04-23 | 杭州华新机电工程有限公司 | Preparation method of PVDF piezoelectric induction film, piezoelectric sensor and application of piezoelectric sensor in rail gnawing of crane |
| CN114104628A (en) * | 2021-11-12 | 2022-03-01 | 武汉船用机械有限责任公司 | Roller deviation rectifying method of rail transport vehicle and rail transport vehicle |
| CN117105093A (en) * | 2023-08-17 | 2023-11-24 | 天津市特种设备监督检验技术研究院(天津市特种设备事故应急调查处理中心) | Crane wheel synchronous state monitoring device and monitoring method thereof |
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2016
- 2016-08-03 CN CN201620836268.3U patent/CN205973481U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111847240A (en) * | 2020-07-15 | 2020-10-30 | 上海海事大学 | Crane synchronization error measuring device and deviation rectifying method thereof |
| CN112701213A (en) * | 2020-12-22 | 2021-04-23 | 杭州华新机电工程有限公司 | Preparation method of PVDF piezoelectric induction film, piezoelectric sensor and application of piezoelectric sensor in rail gnawing of crane |
| CN114104628A (en) * | 2021-11-12 | 2022-03-01 | 武汉船用机械有限责任公司 | Roller deviation rectifying method of rail transport vehicle and rail transport vehicle |
| CN117105093A (en) * | 2023-08-17 | 2023-11-24 | 天津市特种设备监督检验技术研究院(天津市特种设备事故应急调查处理中心) | Crane wheel synchronous state monitoring device and monitoring method thereof |
| CN117105093B (en) * | 2023-08-17 | 2024-05-07 | 天津市特种设备监督检验技术研究院(天津市特种设备事故应急调查处理中心) | Crane wheel synchronous state monitoring device and monitoring method thereof |
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