CA2936463A1 - Apparatus and method for measuring the tension of cables supporting a scaffold in a shaft - Google Patents
Apparatus and method for measuring the tension of cables supporting a scaffold in a shaft Download PDFInfo
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- CA2936463A1 CA2936463A1 CA2936463A CA2936463A CA2936463A1 CA 2936463 A1 CA2936463 A1 CA 2936463A1 CA 2936463 A CA2936463 A CA 2936463A CA 2936463 A CA2936463 A CA 2936463A CA 2936463 A1 CA2936463 A1 CA 2936463A1
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- rope
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
Abstract
Disclosed is an on-line detection device for the tension of suspension ropes (2) or stabilising ropes (3) in a construction vertical shaft, the device mainly being composed of tension detection devices (4) arranged on masts (6) and a steel wire rope frequency detection portion arranged on the surface of a shaft opening. The tension detection devices mainly comprise inclined surface supports (4-3) fixed on the masts (6) of sheaves (5), pressure sensors (4-2) fixedly mounted on inclined surfaces of the inclined surface supports (4-3) and bearing supports (4-1) fixedly connected to the pressure sensors (4-2). The steel wire rope frequency detection portion mainly comprises frequency detection devices (7) and a signal collector used for collecting frequency signals. The propagation frequency of vibration waves on a steel wire rope is periodically detected via a steel wire rope frequency detection device (7) arranged on a shaft cover platform (8), and the tension of the steel wire rope is obtained via the steel wire rope length I and the rope density p, effectively preventing measurement errors caused by an overturning moment of a bearing base, and thereby correcting the pressure sensor. The on-line detection device is simple in structure, convenient to operate, capable of real-time detection and easy to install, removal of the stabilising ropes is not necessary. measurement is accurate, and signal transmission is convenient.
Also disclosed is an on-line detection method for the tension of the suspension ropes (2) or the stabilising ropes (3) in the construction vertical shaft using the on-line detection device.
Also disclosed is an on-line detection method for the tension of the suspension ropes (2) or the stabilising ropes (3) in the construction vertical shaft using the on-line detection device.
Description
Description ON-LINE DETECTION DEVICE AND METHOD FOR TENSION OF SUSPENSION
ROPES OR STABILISING ROPES IN CONSTRUCTION VERTICAL SHAFT
Field of the Invention The present invention relates to an online suspension rope and stable rope tension detection device and a detection method in a vertical shaft construction, which are especially applicable to online suspension rope and stable rope tension detection in a vertical shaft construction.
Background of the Invention At present, the suspension force of a hanging scaffold in a vertical shaft is detected by means of a tension sensor arranged at the joint between the stable ropes and the hanging scaffold.
However, during the installation, first, the stable ropes have to be removed, and the tension sensor has to be treated for dust protection and water-proofing.
And since the hanging scaffold will be at a deeper position in the shaft after a construction period, there will be higher tension on the stable ropes; consequently, the stable ropes will have a high torque, and will twist violently when they are removed, possibly causing injuries of the constructors and twisting of the hanging scaffold owing to unbalanced stress; second, the tension sensor must be connected between the stable ropes or between the stable ropes and the hanging scaffold in the initial stage of shaft construction when the tension sensor is installed;
consequently, it is difficult to transfer the signals from the underground area to the shaft mouth, and difficult to realize real-time detection. In addition to the tension sensor approach, a steel wire rope tension detection device can be clamped on the steel wire rope, and the suspension force of the hanging scaffold is measured indirectly by measuring the lateral acting force, or a detection device for measuring the longitudinal deformation of the steel wire rope can be clamped on the steel wire rope to measure the suspension force of the hanging scaffold indirectly.
However, the indirect measurement approach by measuring the lateral acting force with a device clamped on the steel wire rope is convenient only for thinner steel wire ropes; but, for thicker suspension ropes and stable ropes of a hanging scaffold in a vertical shaft construction, the lateral pressing force is very high and the measurement may be inaccurate owing to the short distance and high rigidity; at the same time, the steel wire rope may be injured because it is bent too much reversely; if a detection device for measuring the longitudinal deformation of the steel wire rope is clamped on the steel wire rope to measure the tension indirectly, a set of wireless node transmission device must be added in order to improve the measurement of steel wire rope tension in the hoisting system. That brings a great challenge to detection cost control.
Contents of the Invention Technical problem: In view of the drawbacks in the prior art, the present invention provides an online suspension rope and stable rope tension detection device and method in a vertical shaft construction, which are simple in structure, don't require removing the stable ropes, are easy to operate, can measure accurately, and can detect the tension in real time.
Technical scheme: The online suspension rope and stable rope tension detection device in a vertical shaft construction in the present invention comprises a signal processor, a shaft-lid platform, a shaft frame arranged above the shaft-lid platform, a plurality of hoisting sheaves arranged at an interval on the shaft frame, and a plurality of suspension ropes or stable ropes with one end fixed to a winch and the other end running over the hoisting sheaves in an inclined manner and then extending vertically into the shaft and connected to a hanging scaffold in the shaft, wherein, a tension detection device is fixed on the shaft frame at each hoisting sheave, and the tension detection device comprises a bearing pedestal, a pressure sensor, and a bevel support, wherein, the bevel support is fixed to the shaft frame by fixing bolts, the pressure sensor and the bearing pedestal arranged on the rotating shaft of the hoisting sheave are fixed on the bevel support, frequency detection devices that clamp said plurality of suspension ropes or stable ropes respectively are arranged on the shaft-lid platform, and the frequency detection devices transmit wireless signals to the signal processor, so that the signal processor processes the signals and carries out calculation.
The inclination angle of the bevel support is a half of the included angle between the inclined section of the suspension rope or stable rope running over the hoisting sheave and the vertical section of the suspension rope or stable ri pe.
The frequency detection device comprises two vibration blocks arranged symmetrically at the two sides of the Description suspension rope or stable rope, an acceleration sensor fixedly mounted at the outer side of one of the vibration blocks, and the acceleration sensor is provided with a wireless transmitter on it, a plurality of clamp wheels that cling to the suspension rope or stable rope tightly are arranged symmetrically at the inner side of the two vibration blocks, clamp springs are arranged on the upper part and lower part at the inner side of the two vibration blocks, and movable translational wheels that clamp into a track of the shaft-lid platform are arranged on the bottom of the two vibration blocks respectively.
An online suspension rope and stable rope tension detection method in a vertical shaft construction utilizing the above-mentioned device, wherein, the tension T of the suspension rope or stable rope is detected in real time by the pressure sensor, and then the tension T of the suspension rope or stable rope is detected regularly by the frequency detection device, and the obtained detection result is used to correct the measurement result of the pressure sensor, through the following steps:
a. detecting the tension of the suspension rope or stable rope with the pressure sensor in real time: when the tension of the suspension rope or stable rope acts on the bearing pedestal via the hoisting sheave, the acting force is transferred to the pressure sensor that is fixedly connected with the bearing pedestal; if the included angle between the inclined section of the suspension rope or stable rope and the vertical section of the suspension rope or stable rope is a, the tension of the suspension rope or stable rope is T, it is seen from the force composition principle that the pressure acting on the pressure sensor perpendicularly to the surface of the pressure sensor (i.e., the pressure F measured by the pressure sensor) is:
F =2T = cosi ¨a\
thus, the tension T of the suspension rope or stable rope is:
T= ___________________________________ 1a 2cos
ROPES OR STABILISING ROPES IN CONSTRUCTION VERTICAL SHAFT
Field of the Invention The present invention relates to an online suspension rope and stable rope tension detection device and a detection method in a vertical shaft construction, which are especially applicable to online suspension rope and stable rope tension detection in a vertical shaft construction.
Background of the Invention At present, the suspension force of a hanging scaffold in a vertical shaft is detected by means of a tension sensor arranged at the joint between the stable ropes and the hanging scaffold.
However, during the installation, first, the stable ropes have to be removed, and the tension sensor has to be treated for dust protection and water-proofing.
And since the hanging scaffold will be at a deeper position in the shaft after a construction period, there will be higher tension on the stable ropes; consequently, the stable ropes will have a high torque, and will twist violently when they are removed, possibly causing injuries of the constructors and twisting of the hanging scaffold owing to unbalanced stress; second, the tension sensor must be connected between the stable ropes or between the stable ropes and the hanging scaffold in the initial stage of shaft construction when the tension sensor is installed;
consequently, it is difficult to transfer the signals from the underground area to the shaft mouth, and difficult to realize real-time detection. In addition to the tension sensor approach, a steel wire rope tension detection device can be clamped on the steel wire rope, and the suspension force of the hanging scaffold is measured indirectly by measuring the lateral acting force, or a detection device for measuring the longitudinal deformation of the steel wire rope can be clamped on the steel wire rope to measure the suspension force of the hanging scaffold indirectly.
However, the indirect measurement approach by measuring the lateral acting force with a device clamped on the steel wire rope is convenient only for thinner steel wire ropes; but, for thicker suspension ropes and stable ropes of a hanging scaffold in a vertical shaft construction, the lateral pressing force is very high and the measurement may be inaccurate owing to the short distance and high rigidity; at the same time, the steel wire rope may be injured because it is bent too much reversely; if a detection device for measuring the longitudinal deformation of the steel wire rope is clamped on the steel wire rope to measure the tension indirectly, a set of wireless node transmission device must be added in order to improve the measurement of steel wire rope tension in the hoisting system. That brings a great challenge to detection cost control.
Contents of the Invention Technical problem: In view of the drawbacks in the prior art, the present invention provides an online suspension rope and stable rope tension detection device and method in a vertical shaft construction, which are simple in structure, don't require removing the stable ropes, are easy to operate, can measure accurately, and can detect the tension in real time.
Technical scheme: The online suspension rope and stable rope tension detection device in a vertical shaft construction in the present invention comprises a signal processor, a shaft-lid platform, a shaft frame arranged above the shaft-lid platform, a plurality of hoisting sheaves arranged at an interval on the shaft frame, and a plurality of suspension ropes or stable ropes with one end fixed to a winch and the other end running over the hoisting sheaves in an inclined manner and then extending vertically into the shaft and connected to a hanging scaffold in the shaft, wherein, a tension detection device is fixed on the shaft frame at each hoisting sheave, and the tension detection device comprises a bearing pedestal, a pressure sensor, and a bevel support, wherein, the bevel support is fixed to the shaft frame by fixing bolts, the pressure sensor and the bearing pedestal arranged on the rotating shaft of the hoisting sheave are fixed on the bevel support, frequency detection devices that clamp said plurality of suspension ropes or stable ropes respectively are arranged on the shaft-lid platform, and the frequency detection devices transmit wireless signals to the signal processor, so that the signal processor processes the signals and carries out calculation.
The inclination angle of the bevel support is a half of the included angle between the inclined section of the suspension rope or stable rope running over the hoisting sheave and the vertical section of the suspension rope or stable ri pe.
The frequency detection device comprises two vibration blocks arranged symmetrically at the two sides of the Description suspension rope or stable rope, an acceleration sensor fixedly mounted at the outer side of one of the vibration blocks, and the acceleration sensor is provided with a wireless transmitter on it, a plurality of clamp wheels that cling to the suspension rope or stable rope tightly are arranged symmetrically at the inner side of the two vibration blocks, clamp springs are arranged on the upper part and lower part at the inner side of the two vibration blocks, and movable translational wheels that clamp into a track of the shaft-lid platform are arranged on the bottom of the two vibration blocks respectively.
An online suspension rope and stable rope tension detection method in a vertical shaft construction utilizing the above-mentioned device, wherein, the tension T of the suspension rope or stable rope is detected in real time by the pressure sensor, and then the tension T of the suspension rope or stable rope is detected regularly by the frequency detection device, and the obtained detection result is used to correct the measurement result of the pressure sensor, through the following steps:
a. detecting the tension of the suspension rope or stable rope with the pressure sensor in real time: when the tension of the suspension rope or stable rope acts on the bearing pedestal via the hoisting sheave, the acting force is transferred to the pressure sensor that is fixedly connected with the bearing pedestal; if the included angle between the inclined section of the suspension rope or stable rope and the vertical section of the suspension rope or stable rope is a, the tension of the suspension rope or stable rope is T, it is seen from the force composition principle that the pressure acting on the pressure sensor perpendicularly to the surface of the pressure sensor (i.e., the pressure F measured by the pressure sensor) is:
F =2T = cosi ¨a\
thus, the tension T of the suspension rope or stable rope is:
T= ___________________________________ 1a 2cos
2 b. detecting the tension of the suspension rope or stable rope with the frequency detection device regularly: since the translational wheels clamp into the track of the shaft-lid platform, the frequency detection device can only move horizontally; the clamp wheels are hinged on the vibration blocks, and the clamp springs clamp the vibration blocks at the two sides of the steel wire rope to the steel wire rope, so that the steel wire rope is constrained by the clamp wheels to move in the vertical direction only; the acceleration sensor is mounted at the outer side of one of the vibration blocks, and transmits lateral vibration acceleration signals of the suspension rope or stable rope to the signal processor via the wireless transmitter arranged on the acceleration sensor, the signal processor processes the signals to obtain the lateral vibration frequency co of the suspension rope or stable rope, and then calculates the tension T of the steel wire rope according to the length I
of the suspension rope or stable rope during measurement and the density p of the steel wire rope with a formula:
ppc0.2 T= ________________________________ 2 + pgl 71.
c. comparing the tension value measured by the pressure sensor with the tension value measured by the frequency detection device, and judging the pressure sensor is abnormal and has to be corrected or replaced if the difference between the two tension values is higher than 20%.
Beneficial effects: With the above-mentioned technical scheme, the suspension rope or stable rope tension detection device in the present invention can effectively avoid the measurement error incurred by the upsetting moment of the bearing pedestal; in addition, a frequency detection device mounted on the shaft-lid platform is used to measure the tension of the steel wire rope regularly, so as to correct the measurement result of the pressure sensor: thus, a problem that the measurement result may be inaccurate incurred by the faults of the pressure sensor that operates in real time can be avoided. The device is simple in structure, convenient to operate, capable of performing real-time detection, easy and convenient to install without removing the stable rope, accurate in measurement and convenient for signal transmission, and has high practicability.
Description Description of the Drawings Fig. 1 is a schematic diagram of vertical shaft construction;
Fig. 2 is a schematic installation diagram of the pressure sensor in the present invention;
Fig. 3 is a schematic diagram of the frequency detection device in the present invention.
In the figures: 1 - hanging scaffold; 2 - suspension rope; 3 - stable rope; 4 -tension detection device; 4-1 - bearing pedestal; 4-2 - pressure sensor; 4-3 - bevel support; 4-4 - fixing bolt; 5 -hoisting sheave; 6 - shaft frame; 7 -frequency detection device; 7-1 - vibration block; 7-2 - acceleration sensor;
7-3 - clamp spring; 7-4 - clamp wheel;
7-5 - translational wheel; 8 - shaft-lid platform; 9 - signal processor; 10 -winch.
Detailed Description of the Embodiments Hereunder the present invention will be detailed in an embodiment with reference to the accompanying drawings:
The online suspension rope and stable rope tension detection device in a vertical shaft construction in the present invention comprises a signal processor 9, a shaft-lid platform 8, a shaft frame 6 arranged above the shaft-lid platform 8, a plurality of hoisting sheaves 5 arranged at an interval on the shaft frame 6, and a plurality of suspension ropes 2 or stable ropes 3 with one end fixed to a winch 10 and the other end running over the hoisting sheaves 5 in an inclined manner and then extending vertically into the shaft and connected to a hanging scaffold 1 in the shaft, wherein, a tension detection device 4 is fixed on the shaft frame 6 at each hoisting sheave 5, and the tension detection device 4 comprises a bearing pedestal 4-1, a pressure sensor 4-2, and a bevel support 4-3, wherein, the bevel support 4-3 is fixed to the shaft frame 6 by fixing bolts 4-4, the pressure sensor 4-2 and the bearing pedestal 4-1 arranged on the rotating shaft of the hoisting sheave 5 are fixed on the bevel support 4-3, the pressure sensor 4-2 is fixed to the bevel support 4-3 by fixing bolts 4-4, the bearing pedestal 4-1 is fixed to the pressure sensor 4-2, and the inclination angle of the bevel support 4-3 is a half of the included angle between the inclined section of the suspension rope 2 or stable rope 3 running over the hoisting sheave 5 and the vertical section of the suspension rope 2 or stable rope 3. The pressure sensor 4-2 and the bearing pedestal 4-1 arranged on the rotating shaft of the hoisting sheave 5 are fixed on the bevel support 4-3, frequency detection devices 7 that clamp said plurality of suspension ropes 2 or stable ropes 3 respectively are arranged on the shaft-lid platform 8, and the frequency detection device 7 comprises two vibration blocks 7-1 arranged symmetrically at the two sides of the suspension rope 2 or stable rope 3, an acceleration sensor 7-2 fixedly mounted at the outer side of one of the vibration blocks 7-1, and the acceleration sensor is provided with a wireless transmitter on it, a plurality of clamp wheels 7-4 that cling to the suspension rope 2 or stable rope 3 tightly are arranged symmetrically at the inner side of the two vibration blocks 7-1, clamp springs 7-3 are arranged on the upper part and the lower part at the inner side of the two vibration blocks 7-1, and movable translational wheels 7-5 that clamp into a track of the shaft-lid platform 8 are arranged on the bottom of the two vibration blocks 7-1 respectively. The frequency detection devices 7 transmit wireless signals to the signal processor 9, so that the signal processor 9 processes the signals and carries out calculation.
An online suspension rope and stable rope tension detection method in a vertical shaft construction utilizing the above-mentioned device, wherein, the tension T of the suspension rope 2 or stable rope 3 is detected in real time by the pressure sensor 4-2, and then the tension T of the suspension rope 2 or stable rope 3 is detected regularly by the frequency detection device 7, and the obtained detection result is used to correct the measurement result of the pressure sensor 4-2, through the following steps:
a.
detecting the tension of the suspension rope 2 or stable rope 3 with the pressure sensor 4-2 in real time: when the tension of the suspension rope 2 or stable rope 3 acts on the bearing pedestal 4-1 via the hoisting sheave 5, the acting force is transferred to the pressure sensor 4-2 that is fixedly connected with the bearing pedestal 4-1;
if the included angle between the inclined section of the suspension rope 2 or stable rope 3 and the vertical section of the suspension rope 2 or stable rope 3 is a , the tension of the suspension rope 2 or stable rope 3 is T. it is seen from the force composition principle that the pressure acting on the pressure sensor 4-2 perpendicularly to the surface of the pressure sensor 4-2 (i.e., the pressure F measured by the pressure sensor 4-2) is:
Err 2T = cos \2)
of the suspension rope or stable rope during measurement and the density p of the steel wire rope with a formula:
ppc0.2 T= ________________________________ 2 + pgl 71.
c. comparing the tension value measured by the pressure sensor with the tension value measured by the frequency detection device, and judging the pressure sensor is abnormal and has to be corrected or replaced if the difference between the two tension values is higher than 20%.
Beneficial effects: With the above-mentioned technical scheme, the suspension rope or stable rope tension detection device in the present invention can effectively avoid the measurement error incurred by the upsetting moment of the bearing pedestal; in addition, a frequency detection device mounted on the shaft-lid platform is used to measure the tension of the steel wire rope regularly, so as to correct the measurement result of the pressure sensor: thus, a problem that the measurement result may be inaccurate incurred by the faults of the pressure sensor that operates in real time can be avoided. The device is simple in structure, convenient to operate, capable of performing real-time detection, easy and convenient to install without removing the stable rope, accurate in measurement and convenient for signal transmission, and has high practicability.
Description Description of the Drawings Fig. 1 is a schematic diagram of vertical shaft construction;
Fig. 2 is a schematic installation diagram of the pressure sensor in the present invention;
Fig. 3 is a schematic diagram of the frequency detection device in the present invention.
In the figures: 1 - hanging scaffold; 2 - suspension rope; 3 - stable rope; 4 -tension detection device; 4-1 - bearing pedestal; 4-2 - pressure sensor; 4-3 - bevel support; 4-4 - fixing bolt; 5 -hoisting sheave; 6 - shaft frame; 7 -frequency detection device; 7-1 - vibration block; 7-2 - acceleration sensor;
7-3 - clamp spring; 7-4 - clamp wheel;
7-5 - translational wheel; 8 - shaft-lid platform; 9 - signal processor; 10 -winch.
Detailed Description of the Embodiments Hereunder the present invention will be detailed in an embodiment with reference to the accompanying drawings:
The online suspension rope and stable rope tension detection device in a vertical shaft construction in the present invention comprises a signal processor 9, a shaft-lid platform 8, a shaft frame 6 arranged above the shaft-lid platform 8, a plurality of hoisting sheaves 5 arranged at an interval on the shaft frame 6, and a plurality of suspension ropes 2 or stable ropes 3 with one end fixed to a winch 10 and the other end running over the hoisting sheaves 5 in an inclined manner and then extending vertically into the shaft and connected to a hanging scaffold 1 in the shaft, wherein, a tension detection device 4 is fixed on the shaft frame 6 at each hoisting sheave 5, and the tension detection device 4 comprises a bearing pedestal 4-1, a pressure sensor 4-2, and a bevel support 4-3, wherein, the bevel support 4-3 is fixed to the shaft frame 6 by fixing bolts 4-4, the pressure sensor 4-2 and the bearing pedestal 4-1 arranged on the rotating shaft of the hoisting sheave 5 are fixed on the bevel support 4-3, the pressure sensor 4-2 is fixed to the bevel support 4-3 by fixing bolts 4-4, the bearing pedestal 4-1 is fixed to the pressure sensor 4-2, and the inclination angle of the bevel support 4-3 is a half of the included angle between the inclined section of the suspension rope 2 or stable rope 3 running over the hoisting sheave 5 and the vertical section of the suspension rope 2 or stable rope 3. The pressure sensor 4-2 and the bearing pedestal 4-1 arranged on the rotating shaft of the hoisting sheave 5 are fixed on the bevel support 4-3, frequency detection devices 7 that clamp said plurality of suspension ropes 2 or stable ropes 3 respectively are arranged on the shaft-lid platform 8, and the frequency detection device 7 comprises two vibration blocks 7-1 arranged symmetrically at the two sides of the suspension rope 2 or stable rope 3, an acceleration sensor 7-2 fixedly mounted at the outer side of one of the vibration blocks 7-1, and the acceleration sensor is provided with a wireless transmitter on it, a plurality of clamp wheels 7-4 that cling to the suspension rope 2 or stable rope 3 tightly are arranged symmetrically at the inner side of the two vibration blocks 7-1, clamp springs 7-3 are arranged on the upper part and the lower part at the inner side of the two vibration blocks 7-1, and movable translational wheels 7-5 that clamp into a track of the shaft-lid platform 8 are arranged on the bottom of the two vibration blocks 7-1 respectively. The frequency detection devices 7 transmit wireless signals to the signal processor 9, so that the signal processor 9 processes the signals and carries out calculation.
An online suspension rope and stable rope tension detection method in a vertical shaft construction utilizing the above-mentioned device, wherein, the tension T of the suspension rope 2 or stable rope 3 is detected in real time by the pressure sensor 4-2, and then the tension T of the suspension rope 2 or stable rope 3 is detected regularly by the frequency detection device 7, and the obtained detection result is used to correct the measurement result of the pressure sensor 4-2, through the following steps:
a.
detecting the tension of the suspension rope 2 or stable rope 3 with the pressure sensor 4-2 in real time: when the tension of the suspension rope 2 or stable rope 3 acts on the bearing pedestal 4-1 via the hoisting sheave 5, the acting force is transferred to the pressure sensor 4-2 that is fixedly connected with the bearing pedestal 4-1;
if the included angle between the inclined section of the suspension rope 2 or stable rope 3 and the vertical section of the suspension rope 2 or stable rope 3 is a , the tension of the suspension rope 2 or stable rope 3 is T. it is seen from the force composition principle that the pressure acting on the pressure sensor 4-2 perpendicularly to the surface of the pressure sensor 4-2 (i.e., the pressure F measured by the pressure sensor 4-2) is:
Err 2T = cos \2)
3 Description thus, the tension T of the suspension rope 2 or stable rope 3 is:
T = ( a 2cos -2 ) b. detecting the tension of the suspension rope 2 or stable rope 3 with the frequency detection device 7 regularly:
since the translational wheels 7-5 clamp into the track of the shaft-lid platform 8, the frequency detection device 7 can only move horizontally; the clamp wheels 7-4 are hinged on the vibration blocks 7-1, and the clamp springs 7-3 clamp the vibration blocks 7-1 at the two sides of the steel wire rope to the steel wire rope, so that the steel wire rope is constrained by the clamp wheels 7-4 to move in the vertical direction only; the acceleration sensor 7-2 is mounted at the outer side of one of the vibration blocks 7-1, and transmits lateral vibration acceleration signals of the suspension rope 2 or stable rope 3 to the signal processor 9 via the wireless transmitter arranged on the acceleration sensor 7-2, the signal processor 9 processes the signals to obtain the lateral vibration frequency co of the suspension rope 2 or stable rope 3, and then calculates the tension T of the steel wire rope according to the length 1 of the suspension rope 2 or stable rope 3 during measurement and the density p of the steel wire rope with a formula:
,42602 T = ____________________________________ pgl ir c. comparing the tension value measured by the pressure sensor 4-2 with the tension value measured by the frequency detection device 7, and judging the pressure sensor 4-2 is abnormal and has to be corrected or replaced if the difference between the two tension values is higher than 20%.
Fig. 1 is a schematic diagram of vertical shaft construction, which is an application scenario of the tension detection device provided in the present invention.
In Fig. 2, a hoisting sheave 5 divides the suspension rope 2 or stable rope 3 into an inclined section and a vertical section. To manufacture the bevel support 4-3, the included angle a between the inclined section of the suspension rope 2 or stable rope 3 and the vertical direction must be ascertained in advance, so that the inclination angle of the bevel surface of the bevel support 4-3 can be determined as a / 2 . The bevel support
T = ( a 2cos -2 ) b. detecting the tension of the suspension rope 2 or stable rope 3 with the frequency detection device 7 regularly:
since the translational wheels 7-5 clamp into the track of the shaft-lid platform 8, the frequency detection device 7 can only move horizontally; the clamp wheels 7-4 are hinged on the vibration blocks 7-1, and the clamp springs 7-3 clamp the vibration blocks 7-1 at the two sides of the steel wire rope to the steel wire rope, so that the steel wire rope is constrained by the clamp wheels 7-4 to move in the vertical direction only; the acceleration sensor 7-2 is mounted at the outer side of one of the vibration blocks 7-1, and transmits lateral vibration acceleration signals of the suspension rope 2 or stable rope 3 to the signal processor 9 via the wireless transmitter arranged on the acceleration sensor 7-2, the signal processor 9 processes the signals to obtain the lateral vibration frequency co of the suspension rope 2 or stable rope 3, and then calculates the tension T of the steel wire rope according to the length 1 of the suspension rope 2 or stable rope 3 during measurement and the density p of the steel wire rope with a formula:
,42602 T = ____________________________________ pgl ir c. comparing the tension value measured by the pressure sensor 4-2 with the tension value measured by the frequency detection device 7, and judging the pressure sensor 4-2 is abnormal and has to be corrected or replaced if the difference between the two tension values is higher than 20%.
Fig. 1 is a schematic diagram of vertical shaft construction, which is an application scenario of the tension detection device provided in the present invention.
In Fig. 2, a hoisting sheave 5 divides the suspension rope 2 or stable rope 3 into an inclined section and a vertical section. To manufacture the bevel support 4-3, the included angle a between the inclined section of the suspension rope 2 or stable rope 3 and the vertical direction must be ascertained in advance, so that the inclination angle of the bevel surface of the bevel support 4-3 can be determined as a / 2 . The bevel support
4-; is mounted on the shaft frame 6 by fixing bolts 4-4, and then the bearing pedestal 4-1 of the hoisting sheave 5 is mounted on the bevel surface of the bevel support 4-3. Since the resultant direction of the vertical section and the inclined section of the suspension rope 2 or stable rope 3 is the bisector direction of the included angle between the vertical section and the inclined section, the pressure measured by the pressure sensor 4-2 is the resultant force of the vertical section and the inclined section, i.e.:
F =2T cos(¨a 2 ) Then, it is ascertained that the tension of the suspension rope 2 or stable rope 3 is:
T= _______________________________________ 2cos 2 ) As shown in Fig. 3, since the translational wheels 7-5 clamp into the track of the shaft-lid platform 8, the frequency detection device 7 can only move horizontally. The clamp wheels 7-4 are hinged on the vibration blocks 7-1, and the clamp springs 7-3 clamp the vibration blocks 7-1 at the two sides of the steel wire rope to the steel wire rope, so that the steel wire rope is constrained by the clamp wheels 7-4 to move in the vertical direction only. An acceleration sensor 7-2 is mounted at the outer side of the vibration block 7-1, and the acceleration sensor 7-2 transmits the lateral vibration acceleration signals of the suspension rope 2 or stable rope 3 to the signal processor 9 via wireless transmitter; the processing program in the signal processor 9 receives the signals, processes the signals according to the length / of the suspension rope 2 or stable rope 3 during measurement and the density p of the steel wire rope, and obtains the tension of the steel wire rope with the following formula:
Description pl2CO 2 T= _______________________________ 2 + pgl 7"1"
thus, the measurement can be carried out regularly, so as to ensure the accuracy of the measurement result of the pressure sensor.
F =2T cos(¨a 2 ) Then, it is ascertained that the tension of the suspension rope 2 or stable rope 3 is:
T= _______________________________________ 2cos 2 ) As shown in Fig. 3, since the translational wheels 7-5 clamp into the track of the shaft-lid platform 8, the frequency detection device 7 can only move horizontally. The clamp wheels 7-4 are hinged on the vibration blocks 7-1, and the clamp springs 7-3 clamp the vibration blocks 7-1 at the two sides of the steel wire rope to the steel wire rope, so that the steel wire rope is constrained by the clamp wheels 7-4 to move in the vertical direction only. An acceleration sensor 7-2 is mounted at the outer side of the vibration block 7-1, and the acceleration sensor 7-2 transmits the lateral vibration acceleration signals of the suspension rope 2 or stable rope 3 to the signal processor 9 via wireless transmitter; the processing program in the signal processor 9 receives the signals, processes the signals according to the length / of the suspension rope 2 or stable rope 3 during measurement and the density p of the steel wire rope, and obtains the tension of the steel wire rope with the following formula:
Description pl2CO 2 T= _______________________________ 2 + pgl 7"1"
thus, the measurement can be carried out regularly, so as to ensure the accuracy of the measurement result of the pressure sensor.
Claims (4)
1. An online suspension rope and stable rope tension detection device in a vertical shaft construction, comprising a signal processor (9), a shaft-lid platform (8), a shaft frame (6) arranged above the shaft-lid platform (8), a plurality of hoisting sheaves (5) arranged at an interval on the shaft frame (6), and a plurality of suspension ropes (2) or stable ropes (3) with one end fixed to a winch (10) and the other end running over the hoisting sheaves (5) in an inclined manner and then vertically extending into the shaft and connected to a hanging scaffold (1) in the shaft, wherein, a tension detection device (4) is fixed on the shaft frame (6) at each hoisting sheave (5), and the tension detection device (4) comprises a bearing pedestal (4-1), a pressure sensor (4-2), and a bevel support (4-3), the bevel support (4-3) is fixed to the shaft frame (6) by fixing bolts (4-4), the pressure sensor (4-2) and the bearing pedestal (4-1) arranged on the rotating shaft of the hoisting sheave (5) are fixed on the bevel support (4-3), frequency detection devices (7) that clamp said plurality of suspension ropes (2) or stable ropes (3) are arranged on the shaft-lid platform (8), and the frequency detection devices (7) transmit wireless signals to the signal processor (9), so that the signal processor (9) processes the signals and carries out calculation.
2. The suspension rope tension detection device in a vertical shaft construction according to claim 1, wherein, the inclination angle of the bevel support (4-3) is a half of the included angle between the inclined section of the suspension rope (2) or stable rope (3) running over the hoisting sheave (5) and the vertical section of the suspension rope (2) or stable rope (3).
3. The suspension rope tension detection device in a vertical shaft construction according to claim 1, wherein, the frequency detection device (7) comprises two vibration blocks (7-1) arranged symmetrically at the two sides of the suspension rope (2) or stable rope (3), an acceleration sensor (7-2) fixedly mounted at the outer side of one of the vibration blocks (7-1), and the acceleration sensor is provided with a wireless transmitter on it, a plurality of clamp wheels (7-4) that cling to the suspension rope (2) or stable rope (3) tightly are arranged symmetrically at the inner side of the two vibration blocks (7-1), clamp springs (7-3) are arranged on the upper part and lower part at the inner side of the two vibration blocks (7-1), and movable translational wheels (7-5) that clamp into a track of the shaft-lid platform (8) are arranged on the bottom of the two vibration blocks (7-1) respectively.
4. An online suspension rope and stable rope tension detection method in a vertical shaft construction utilizing the device according to any of claim 1, 2 or 3, wherein, the tension T of the suspension rope (2) or stable rope (3 i is detected in real time by the pressure sensor (4-2), and then the tension T of the suspension rope (2) or stable rope (3) is detected regularly by the frequency detection device (7), and the obtained detection result is used to correct the measurement result of the pressure sensor (4-2), through the following steps:
a. detecting the tension of the suspension rope (2) or stable rope (3) with the pressure sensor (4-2) in real time:
when the tension of the suspension rope (2) or stable rope (3) acts on the bearing pedestal (4-1) via the hoisting sheave (5), the acting force is transferred to the pressure sensor (4-2) that is fixedly connected with the bearing pedestal (4-1); if the included angle between the inclined section of the suspension rope (2) or stable rope (3) and the vertical section of the suspension rope (2) or stable rope (3) is a , the tension of the su Tension rope (2) or stable rope (3) is T, it is seen from the force composition principle that the pressure acting on the pressure sensor (4-2) perpendicularly to the surface of the pressure sensor (4-2) (i.e., the pressure F measured by the pressure sensor (4-2)) is:
thus, the tension T of the suspension rope (2) or stable rope (3) is:
b. detecting the tension of the suspension rope (2) or stable rope (3) with the frequency detection device (7) regularly: since the translational wheels (7-5) clamp into the track of the shaft-lid platform (8), the frequency detection device (7) can only move horizontally; the clamp wheels (7-4) are hinged on the vibration blocks (7-1 ), and the clamp springs (7-3) clamp the vibration blocks (7-1) at the two sides of the steel wire rope to the steel wire rope, so that the steel wire rope is constrained by the clamp wheels (7-4) to move in the vertical Claims direction only; the acceleration sensor (7-2) is mounted at the outer side of one of the vibration blocks (7-1), and transmits lateral vibration acceleration signals of the suspension rope (2) or stable rope (3) to the signal processor (9) via the wireless transmitter arranged on the acceleration sensor (7-2), the signal processor (9) processes the signals to obtain the lateral vibration frequency .omega. of the suspension rope (2) or stable rope (3), and then calculates the tension T of the steel wire rope according to the length I of the suspension rope (2) or stable rope (3) during measurement and the density .rho. of the steel wire rope with a formula:
c. comparing the tension value measured by the pressure sensor (4-2) with the tension value measured by the frequency detection device (7), and judging the pressure sensor (4-2) is abnormal and has to be corrected or replaced if the difference between the two tension values is higher than 20%.
a. detecting the tension of the suspension rope (2) or stable rope (3) with the pressure sensor (4-2) in real time:
when the tension of the suspension rope (2) or stable rope (3) acts on the bearing pedestal (4-1) via the hoisting sheave (5), the acting force is transferred to the pressure sensor (4-2) that is fixedly connected with the bearing pedestal (4-1); if the included angle between the inclined section of the suspension rope (2) or stable rope (3) and the vertical section of the suspension rope (2) or stable rope (3) is a , the tension of the su Tension rope (2) or stable rope (3) is T, it is seen from the force composition principle that the pressure acting on the pressure sensor (4-2) perpendicularly to the surface of the pressure sensor (4-2) (i.e., the pressure F measured by the pressure sensor (4-2)) is:
thus, the tension T of the suspension rope (2) or stable rope (3) is:
b. detecting the tension of the suspension rope (2) or stable rope (3) with the frequency detection device (7) regularly: since the translational wheels (7-5) clamp into the track of the shaft-lid platform (8), the frequency detection device (7) can only move horizontally; the clamp wheels (7-4) are hinged on the vibration blocks (7-1 ), and the clamp springs (7-3) clamp the vibration blocks (7-1) at the two sides of the steel wire rope to the steel wire rope, so that the steel wire rope is constrained by the clamp wheels (7-4) to move in the vertical Claims direction only; the acceleration sensor (7-2) is mounted at the outer side of one of the vibration blocks (7-1), and transmits lateral vibration acceleration signals of the suspension rope (2) or stable rope (3) to the signal processor (9) via the wireless transmitter arranged on the acceleration sensor (7-2), the signal processor (9) processes the signals to obtain the lateral vibration frequency .omega. of the suspension rope (2) or stable rope (3), and then calculates the tension T of the steel wire rope according to the length I of the suspension rope (2) or stable rope (3) during measurement and the density .rho. of the steel wire rope with a formula:
c. comparing the tension value measured by the pressure sensor (4-2) with the tension value measured by the frequency detection device (7), and judging the pressure sensor (4-2) is abnormal and has to be corrected or replaced if the difference between the two tension values is higher than 20%.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410623945.9A CN104374508B (en) | 2014-11-07 | 2014-11-07 | A kind of construction vertical suspension rope and steady rope tension on-line measuring device and method |
| CN201410623945.9 | 2014-11-07 | ||
| PCT/CN2015/081598 WO2016070626A1 (en) | 2014-11-07 | 2015-06-17 | On-line detection device and method for tension of suspension ropes or stabilising ropes in construction vertical shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2936463A1 true CA2936463A1 (en) | 2016-05-12 |
| CA2936463C CA2936463C (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CA2936463A Expired - Fee Related CA2936463C (en) | 2014-11-07 | 2015-06-17 | Apparatus and method for measuring the tension of cables supporting a scaffold in a shaft |
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| Country | Link |
|---|---|
| CN (1) | CN104374508B (en) |
| CA (1) | CA2936463C (en) |
| WO (1) | WO2016070626A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113602520A (en) * | 2021-07-27 | 2021-11-05 | 中航西安飞机工业集团股份有限公司 | Flexible large-span weak-rigidity light component overturning device and using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104374508B (en) * | 2014-11-07 | 2016-08-31 | 中国矿业大学 | A kind of construction vertical suspension rope and steady rope tension on-line measuring device and method |
| CN106052931B (en) * | 2016-05-18 | 2018-09-14 | 中国矿业大学 | A kind of multi rope winding steel wire rope tension self-balancing testing stand and method |
| CN106930521B (en) * | 2017-05-02 | 2018-11-27 | 中国矿业大学 | A kind of ultra-deep construction vertical parallel connection suspension platform location regulating system and method |
| CN107806927B (en) * | 2017-10-16 | 2023-11-07 | 中国电子科技集团公司第十六研究所 | Stirling refrigerator micro-vibration output multi-point suspension system and detection method thereof |
| CN110155904B (en) * | 2018-11-27 | 2020-11-03 | 中国国际海运集装箱(集团)股份有限公司 | Elevator and elevator steel wire rope tension reduction control method |
| US11661312B2 (en) | 2019-01-29 | 2023-05-30 | Otis Elevator Company | Hoisting rope monitoring device |
| CN115183983B (en) * | 2022-09-13 | 2022-11-15 | 中国航空工业集团公司沈阳空气动力研究所 | Control surface hinge moment balance verification loading device |
| CN117129072B (en) * | 2023-10-25 | 2024-02-02 | 创新精密（苏州）有限公司 | Rotating shaft vibration detection device |
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| JPH08136371A (en) * | 1994-11-08 | 1996-05-31 | Sony Corp | Apparatus for measuring tension of running band-shaped body |
| JPH09196783A (en) * | 1996-01-23 | 1997-07-31 | Tsubakimoto Chain Co | Apparatus for measuring tension |
| CN201126388Y (en) * | 2007-11-26 | 2008-10-01 | 中国重型机械研究院 | On-line tension detection device |
| CN101368860B (en) * | 2008-09-12 | 2010-09-01 | 江苏工业学院 | Method for correcting FFT data in stayed-cable force of stayed-cable bridge detected by frequency method |
| CN101726383B (en) * | 2009-12-11 | 2011-03-16 | 太原理工大学 | Multi-rope winder steel wire rope tension test method |
| CN201611292U (en) * | 2010-02-10 | 2010-10-20 | 常州市赛嘉机械有限公司 | Yarn tension measurement apparatus |
| WO2011147456A1 (en) * | 2010-05-27 | 2011-12-01 | Kone Corporation | Elevator and elevator rope monitoring device |
| CN103162890A (en) * | 2011-12-19 | 2013-06-19 | 西北机器有限公司 | Twenty-high rolling mill tension measuring device |
| CN103017966A (en) * | 2012-12-10 | 2013-04-03 | 大连博控科技股份有限公司 | Pressure sensing mechanism for detecting tensile force of cable |
| CN103359645B (en) * | 2013-07-08 | 2015-12-09 | 中国矿业大学 | Flexible cable suspension platform guide rope tension force variotrol and method |
| CN103776577B (en) * | 2014-01-03 | 2016-05-04 | 中国矿业大学 | Steady rope tension checkout gear and the detection method of construction vertical hanging scaffold |
| CN104374508B (en) * | 2014-11-07 | 2016-08-31 | 中国矿业大学 | A kind of construction vertical suspension rope and steady rope tension on-line measuring device and method |
| CN204314004U (en) * | 2014-11-07 | 2015-05-06 | 中国矿业大学 | A kind of construction vertical suspension rope and steady rope tension on-line measuring device |
-
2014
- 2014-11-07 CN CN201410623945.9A patent/CN104374508B/en active Active
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- 2015-06-17 CA CA2936463A patent/CA2936463C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113602520A (en) * | 2021-07-27 | 2021-11-05 | 中航西安飞机工业集团股份有限公司 | Flexible large-span weak-rigidity light component overturning device and using method |
Also Published As
| Publication number | Publication date |
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| CN104374508B (en) | 2016-08-31 |
| CA2936463C (en) | 2019-07-30 |
| CN104374508A (en) | 2015-02-25 |
| WO2016070626A1 (en) | 2016-05-12 |
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