CN1492833A - Load detection device and control method therefor and elevator device - Google Patents
Load detection device and control method therefor and elevator device Download PDFInfo
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- CN1492833A CN1492833A CNA018227449A CN01822744A CN1492833A CN 1492833 A CN1492833 A CN 1492833A CN A018227449 A CNA018227449 A CN A018227449A CN 01822744 A CN01822744 A CN 01822744A CN 1492833 A CN1492833 A CN 1492833A
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- steel wire
- detection device
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- load detection
- sensor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads
- B66B5/145—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads electrical
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A load detection device equipped with a sensor for detecting the angle of rotation of a rotary body that rotates in response to changes in load, wherein the state of wires is decided on the basis of detected values from the sensor. This makes it possible to reliably recognize breakage of the wires thereby avoiding a burden on the elevator device due to lifting and lowering with the car full of load.
Description
Technical field
The present invention relates to load detection device that the load on the cage that puts on lift appliance is detected and control method thereof, lift appliance.
Background technology
With Fig. 8, Fig. 9 the load detection device of in the past lift appliance is described.
Fig. 8 is the skeleton diagram of load detection device in the past.Among Fig. 8,1 is provided in a side of in the hoist trunk or the base in the Machine Room, the 3rd, a plurality of shackle rods of an end of the drag rope of perforation base 1 and supporting suspension cage etc., 5 are provided in a side of the spring washer of shackle rods 3 upper end side, the 7th, the nut that decision shackle spring uses length to use, the 8th, the nut of dead sheave seat usefulness, the 10th, a plurality of shackle springs that the change that puts on the load on a plurality of shackle rods 3 is cushioned, the 12nd, be supported on the shackle rods 3 and support a plurality of pulley bases of movable pulley, the 13rd, with a plurality of movable pulleys of the interlock of displacement up and down of shackle rods 3, the 15th, the framework of support loading detecting device, the 16th, be supported on a plurality of fixed pulleys that volume on the framework 15 is hung action side steel wire, 18 is end bearings in detecting on the belt wheel and the other end is supported on action side steel wire on the stationary member by movable pulley and fixed pulley, the 20th, as the lead screw of stationary member, the 22nd, be used for the nut that lead screw 20 is positioned, the 30th, be fixedly arranged on the fulcrum on the framework 15, the 32nd, be located at the sensor that detects on the belt wheel and the rotational angle that detects belt wheel is detected, the 35th, as the detection belt wheel of the rotor that rotates with the mobile interlock of action side steel wire 18 and tension side steel wire, 35a is provided in a side of the breach that detects on the belt wheel 35, the 37th, the standing finish of and supporting action side steel wire 18 and tension side steel wire chimeric with breach 35a, 40 is that an end bearing is on standing finish 37, the other end is supported on the tension side steel wire on the tension spring, and the 42nd, apply the tension spring that zero load direction turning effort is used to detecting belt wheel 35 as the turning effort supply unit.
Here, constitute the lanyard portion of lift appliance by shackle rods 3, shackle spring 10, spring washer 5, nut 7, base 1 etc.In addition, lanyard portion is arranged in the hoist trunk or the Machine Room in.And, be supported on the not shown drag rope on shackle rods 3 lower ends, hanging not shown Machine Room and counterweight in the hoist trunk, utilize the driving of winch, make the lifting round about of cage and counterweight.
On the other hand, constitute load detection device by movable pulley 13, pulley base 12, fixed pulley 16, detection belt wheel 35, sensor 32, action side steel wire 18, tension side steel wire 40, tension spring 42 etc.
And load detection device is the following device that moves like that.
At first, action side steel wire 18 is alternately rolled up and is hung on a plurality of movable pulleys 13 and a plurality of fixed pulley 16.And 18 pairs of detection belt wheels 35 of action side steel wire apply to make and detect belt wheel 35 turning effort that clockwise direction rotates in figure.In addition, 42 pairs of detection belt wheels 35 of tension side steel wire 40 and tension spring apply the turning effort of rotating to anticlockwise direction (being zero load direction).Thus, on action side steel wire 18, just applying the tension force of regulation.In addition, the position of sensor 32 shown in Figure 8, the load in the expression cage is the situation of normal condition.
And the occasion that the duty ratio normal condition in cage is heavy makes shackle rods 3 move to the below of the position of Fig. 8 toward pressing down on shackle spring 10.Along with moving of this shackle rods 3, also move downwards the position of movable pulley 13 and pulley base 12.Thus, action side steel wire 18 makes and detects the clockwise direction rotation of belt wheel 35 in figure.In addition, the amount of movement of action side steel wire 18 at this moment is equivalent to 2 times of shackle rods 3 amount of movements, and the rotational angle that detects belt wheel 35 is suitable with the amount of movement of action side steel wire 18.
At this moment, detecting belt wheel 35 is that middle mind-set clockwise direction rotates with being fixed in the sensor 32 that detects on the belt wheel 35 with fulcrum 30.And, detect the rotational angle that detects belt wheel 35 with sensor 32, just can detect load in the cage from this detected value.Here, sensor 32 for example is inclination sensor (acceleration pick-up), can detect the component of acceleration due to gravity, and obtains the rotational angle that detects belt wheel 35 from this value.
In contrast, the light occasion of duty ratio normal condition in cage is because of the elastic force of shackle spring 10, the top of the position that makes shackle rods 3 up be pushed away to move to Fig. 8.Along with moving of this shackle rods 3, the position of movable pulley 13 and pulley base 12 also is moved upward.At this moment, utilize tension side steel wire 40 and tension spring 42, action side steel wire 18 is applied tension force, detect belt wheel 35 anticlockwise motion in figure.And, detect the rotational angle that detects belt wheel 35 with sensor 32, detect load in the cage from this detected value.
For the detected value of the load of above-mentioned detected cage, the control part of the changer in the driving power of control winch transmits.And,, volume is worried the rotative speed of the winch of messenger rope and finely tunes according to this detected value.On the other hand, surpass the occasion of specified value, be controlled to and send the warning tones that the cage side is the overload meaning at the detected value of the load of cage.
Fig. 9 is the skeleton diagram of another load detection device in the past.The load detection device of Fig. 9 uses counterweight 45 to replace being used for action side steel wire 18 is applied tension spring 42 a bit different with the load detection device of above-mentioned Fig. 8 of tension force.Specifically, an end of tension side steel wire 40 is connected with the standing finish 37 that detects belt wheel 35, and the other end is connected with counterweight 45.About other the structure of each member and the action of load detection device, with the load detection device of above-mentioned Fig. 8 be same.
, above-mentioned load detection device when action side steel wire 18 or tension side steel wire 40 damages, exists and loads the Loaded goods that surpasses admissible load or rotation that can not control detection belt wheel 35 and make the problem that belt wheel 35 dallies that detects on cage.
In detail, the occasion in tension side steel wire 40 or 18 fractures of action side steel wire does not apply tension force, detection belt wheel 35 and just can not suitably rotate linkedly with the knee-action of shackle rods 3 on action side steel wire 18.Therefore, can not suitably detect the load of cage, for example,, can not detect this situation, make cage, might damage drag rope etc. crossing lifting under the cargo-carring state even become overladen occasion at the load of cage.
In addition, in the occasion of action side steel wire 18 fractures, just only apply on the belt wheel 35 by tension spring 42 or counterweight 45, tension side steel wire 40 caused anti-clockwise turning efforts detecting.Therefore, detect the electric wiring (Japanese: Ha one ネ ス) be involved in fulcrum and be cut off that belt wheel 35 just might carry out rotation to anticlockwise direction, make sensor 32 etc.
Summary of the invention
The present invention makes in order to address the above problem, its purpose is, also can not make cage cross under the cargo-carring state load detection device that part can not damage, reliability is high such as lifting and sensor and control method thereof, lift appliance even provide a kind of volume to hang over to produce fracture as the steel wire on the detection belt wheel of rotor.
Load detection device of the present invention has and sensor that the rotational angle rotor that rotate detect corresponding with load change, judges the state of steel wire according to the detected value of sensor.Thus, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention is, in the load detection device after above-mentioned improvement, whether whether in specialized range, just can discern steel wire is normal condition according to the detected value of sensor.Thus, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention is, in the load detection device after above-mentioned improvement, during to admissible load or the detected value of the sensor when zero load add or deduct margin (Japanese: margin), just can determine the normal detection range of steel wire state.Thus, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention has corresponding with load change and rolling element load detecting device that rotate, the limit rotation member with restriction rotor slewing area.Thus, even volume hangs over steel wire fracture on the rotor, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of can alleviator interior parts such as sensor.
In addition, the present invention is, in the load detection device after above-mentioned improvement, the detected value of the sensor that detects according to the rotational angle to rotor is judged the state of steel wire.Thus, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of can alleviator interior parts such as sensor.In addition, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention is, in the load detection device after above-mentioned improvement, whether whether in specialized range, just can discern steel wire is normal condition according to the detected value of sensor.Thus, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of can alleviator interior parts such as sensor.In addition, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention is, in the load detection device after above-mentioned improvement, during to admissible load or the detected value of the sensor when zero load add or deduct margin, just can determine the normal detection range of steel wire state.Thus, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of can alleviator interior parts such as sensor.In addition, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention is, in the load detection device after above-mentioned improvement, the limit rotation member is the member that the turning effort that produced with tension side steel wire bonded assembly turning effort supply unit is limited to the supply of rotor.Thus, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of can alleviator interior parts such as sensor.
In addition, the present invention is, in the load detection device after above-mentioned improvement, limits movable range as the tension spring of turning effort supply unit by the restriction steel wire as the limit rotation member.Thus, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of can alleviator interior parts such as sensor.
In addition, the present invention is, in the load detection device after above-mentioned improvement, the limit rotation member is to the amount of movement restriction of movable pulley and member that turning effort is limited to the supply of rotor.Thus, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of can alleviator interior parts such as sensor.
In addition, the present invention is in the load detection device after above-mentioned improvement, to constitute the limit rotation member with the 1st pulley base with slide mechanism and the 2nd pulley base.Thus, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of can alleviator interior parts such as sensor.
In addition, the present invention is the lift appliance with the load detection device after the above-mentioned improvement.Thus, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.In addition, owing to can make the rotation of rotor stop at the rotational angle of regulation, so the damage of the parts such as sensor in the detecting device that can lighten the load.
In addition, the present invention is the lift appliance after the above-mentioned improvement, according to the detected value of sensor, discerns the steel wire state by control part, and controls the lifting of cage according to its recognition result.Thus, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention is the control method that has the load detection device of and sensor that the rotational angle rotor that rotate detect corresponding with load change, judges the state of steel wire according to the detected value of sensor.Thus, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention is, in the control method of the load detection device after above-mentioned improvement, whether whether in specialized range, just can discern steel wire is normal condition according to the detected value of sensor.Thus, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
In addition, the present invention is, in the control method of the load detection device after above-mentioned improvement, during to admissible load or the detected value of the sensor when zero load add or deduct margin, just can determine the normal range of steel wire state.Thus, owing to can discern the fracture of steel wire reliably, can avoid because of making cage cross the burden that lifting causes under the cargo-carring state to lift appliance.
The simple declaration of accompanying drawing
Fig. 1 is the skeleton diagram of the load detection device of expression example 1 of the present invention.
Fig. 2 be in the load detection device of Fig. 1, the line chart that concerns of the rotational angle of output valve and the rotor of expression sensor.
Fig. 3 be illustrated in the load detection device of Fig. 1, skeleton diagram that action side steel wire damages the back state.
Fig. 4 is the skeleton diagram of the load detection device of expression example 2 of the present invention.
Fig. 5 be illustrated in the load detection device of Fig. 4, skeleton diagram that the tension side steel wire damages the back state.
Fig. 6 is illustrated in the movable pulley in the load detection device of Fig. 4 and the enlarged drawing of pulley base.
Fig. 7 is the cutaway view of the X-X line section of the movable pulley of presentation graphs 6 and pulley base.
Fig. 8 represents the skeleton diagram of load detection device in the past.
Fig. 9 is a skeleton diagram of representing another load detection device in the past.
The working of an invention mode
For the present invention more is described in detail in detail, be described with reference to the accompanying drawings.Among each figure, identical or cooresponding part is put on same-sign, and suitably simplify or omit its repeat specification.
Among Fig. 1～Fig. 3, the load detection device of example 1 of the present invention is described.Fig. 1 is the skeleton diagram of the load detection device of expression example 1 of the present invention.Fig. 2 be in the load detection device of Fig. 1, the line chart that concerns of the rotational angle of output valve and the rotor of expression sensor.Fig. 3 be illustrated in the load detection device of Fig. 1, skeleton diagram that action side steel wire damages the back state.
In Fig. 1～Fig. 3, the 1st, base, the 3rd, a plurality of shackle rods, the 5th, spring washer, 7, the 8th, nut, the 10th, a plurality of shackle springs, the 12nd, be supported on the shackle rods 3 and support a plurality of pulley bases of movable pulley, the 13rd, with a plurality of movable pulleys of the interlock of displacement up and down of shackle rods 3, the 15th, the framework of support loading detecting device, the 16th, be supported on the fixed pulley on the framework 15,18 is end bearings in detecting on the belt wheel and the other end is supported on action side steel wire on the stationary member by movable pulley and fixed pulley, the 20th, as the lead screw of stationary member, the 22nd, be used for the nut that lead screw 20 is positioned, the 30th, be fixedly arranged on the fulcrum on the framework 15, the 32nd, be located at the sensor of the inclination sensor that detects on the belt wheel and the rotational angle that detects belt wheel is detected etc., the 33rd, judge steel wire 18 according to the detected value of sensor 32, the control part of 40 states, the 35th, as with the detection belt wheel of the mobile rotor that carries out interlock and rotate of action side steel wire 18 and tension side steel wire, 35a is provided in a side of the breach that detects on the belt wheel 35, the 37th, the standing finish of and supporting action side steel wire 18 and tension side steel wire chimeric with breach 35a, 40 be an end bearing on standing finish 37 and the other end be supported on tension side steel wire on the tension spring, the 42nd, to detecting the tension spring that turning effort that belt wheel 35 applies zero load direction is used as the turning effort supply unit, the 50th, be fixedly arranged on the fix screw on the framework 15,52 are end bearings on the fix screw 50 and the other end be supported on restriction steel wire on the tension spring 42.
Here, constitute lanyard portion by shackle rods 3, shackle spring 10, spring washer 5, nut 7, base 1 etc.In addition, lanyard portion is arranged in the hoist trunk or the Machine Room in.And, be supported on not shown drag rope on the lower end of shackle rods 3 and hanging not shown Machine Room and counterweight in the hoist trunk, utilize the driving of winch, make the lifting round about of cage and counterweight.
On the other hand, constitute load detection device by movable pulley 13, pulley base 12, fixed pulley 16, detection belt wheel 35, sensor 32, action side steel wire 18, tension side steel wire 40, tension spring 42, restriction steel wire 52, fix screw 50 etc.
Action just often to the load detection device of said structure describes below.
At first, action side steel wire 18 is alternately rolled up and is hung on movable pulley 13 and the fixed pulley 16.And 18 pairs of detection belt wheels 35 of action side steel wire apply to make and detect belt wheel 35 turning effort that clockwise direction rotates in figure.In addition, 42 pairs of detection belt wheels 35 of tension side steel wire 40 and tension spring apply the turning effort to anticlockwise motion.Thus, on action side steel wire 18, just applying the tension force of regulation.
And the occasion that the duty ratio normal condition in cage is heavy makes shackle rods 3 move to the below of the position of Fig. 1 toward pressing down on shackle spring 10.Along with moving of this shackle rods 3, also move downwards the position of movable pulley 13 and pulley base 12.Thus, action side steel wire 18 makes and detects the clockwise direction rotation of belt wheel 35 in figure.And, detect the rotational angle that detects belt wheel 35 with sensor 32, just can detect load in the cage from this detected value.
In contrast, the light occasion of duty ratio normal condition in cage, because of the elastic force of shackle spring 10, shackle rods 3 is up pushed away and is moved to the top of Fig. 1 position.Along with moving of this shackle rods 3, the position of movable pulley 13 and pulley base 12 also is moved upward.Thus, action side steel wire 18 also moves, and detects belt wheel 35 anticlockwise motion in figure.And, detect the rotational angle that detects belt wheel 35 with sensor 32, detect load in the cage from this detected value.
Detected value for the load of above-mentioned detected cage is sent to control part 33, and then, this information just is sent to the drive division of winch and the operating portion of cage etc.
Then, the action when unusual describes to the generation of the load detection device of this example 1 among Fig. 2, Fig. 3.Fig. 2 is the line chart that the rotational angle of output valve and the rotor of expression sensor in the load detection device of Fig. 1 concerns.
Among Fig. 2, the rotational angle of the detection belt wheel 35 in the transverse axis presentation graphs 1, the detected value (output valve) of the sensor 32 in the longitudinal axis presentation graphs 1.
And when the load of the cage of lift appliance was in normal condition (being the state of Fig. 1), the rotational angle that detects belt wheel was 0 ° (being the BL among the figure), and the detected value of sensor is 0 as shown in Figure 2.To this, when the load of cage is in no load condition, detect the anticlockwise motion of belt wheel to Fig. 1, sensor be with Fig. 2 in the cooresponding detected value of NL.In addition, when the load of cage is in the admissible load state, detects belt wheel and rotate to the clockwise direction of Fig. 1, sensor become with Fig. 2 in the cooresponding detected value of FL.Here, so-called admissible load from the viewpoint of the structure of lift appliance, the viewpoint on the technical standard, is the upper limit of the loading load of predetermined cage.
The load detection device of this example 1 is according to the detected value of sensor, to judge the state of action side steel wire and tension side steel wire.Specifically, will the rotational angle NL when zero load deduct the normal detection range S that scope that rotational angle L2 behind the margin M2 and the rotational angle FL during to admissible load add the rotational angle L1 behind the margin M1 is set as unusual detection belt wheel regular event such as on action side steel wire and tension side steel wire non-cracking.In contrast, will the rotational angle NL when zero load deducting scope that rotational angle L2 behind the margin M2 and the rotational angle FL during to admissible load add the rotational angle L1 behind the margin M1 is set as outward abnormality detection scope AS unusual, that detect the belt wheel mal-function takes place on action side steel wire and tension side steel wire.Whether the differentiation of normal detection range S like this and abnormality detection scope AS can enter with the cooresponding minimum value of rotational angle with the cooresponding peaked scope of rotational angle by the detected value with 33 pairs of sensors of control part of Fig. 1 and judge.
And, the detected value of sensor, become bigger or than maxim than minimum value hour, with this information from control part to transmission such as cage and winchs, take cage cargo-carring excessively prevented measure.Specifically, for example, the control winch stops the lifting of cage, or the guidance panel and the sound that gives a warning in the control cage.Thus, prevent the operation of load detection device lift appliance in the state after fault.
In addition, for the rotational angle that detects belt wheel, the margin M2 of zero load side for example is made as 10～15% value of relative cage weight when empty.In addition, the margin M1 of admissible load side for example is made as 10～15% value of the specified full weight of relative cage.And, for example, the detected value of sensor, when becoming abnormality detection scope AS continuously at the appointed time, can be with the fracture of control part identification maneuver side steel wire and tension side steel wire.
Then, the anti-clockwise of the detection belt wheel of the load detection device of this example among Fig. 31 being rotated the limit rotation member that limits describes.Fig. 3 be illustrated in the load detection device of Fig. 1, skeleton diagram that action side steel wire damages the back state.
Among Fig. 3, action side steel wire 18 ruptures at the P1 of fracture portion.At this moment, detect the tension force that belt wheel 35 rotates to clockwise direction, detect belt wheel 35 and just utilize tension spring 42 and tension side steel wire 40 to rotate to anticlockwise direction (direction of arrow among Fig. 3) because action side steel wire loses to make.And, when the rotation that detects belt wheel 35 surpasses normal detection range S, just control part 33 identification maneuver side steel wires 18 fractures as described above.
In addition, when detection belt wheel 35 rotates above normal detection range S, limit the turning effort that tension spring 42 causes accordingly with the length that limits steel wire 52.Thus, the rotation of detection belt wheel 35 just stops.That is, when detection belt wheel 35 carried out normal rotation, as shown in Figure 1, restriction steel wire 52 was relaxed state.In contrast, when detecting belt wheel 35 when anticlockwise direction exceeds the normal range rotation, as shown in Figure 3, restriction steel wire 52 is tensioning state.At this moment, the tension spring 42 of an end bearing on restriction steel wire 52 can not foreshorten to drift, can keep the spring length of regulation.And,, stop to detect the rotation of belt wheel 35 in this position.
Like this, just can prevent the condition of poor such as electric wiring cut-out of rotating in the sensor 32 that causes of crossing reliably because of the detection belt wheel 35 that cuts off along with action side steel wire 18.
As mentioned above, adopt the load detection device of this example 1, even volume hangs over as the steel wire fracture on the detection belt wheel of rotor, can not make cage cross lifting under the cargo-carring state yet, can also not can make the damage parts ground of sensor etc. obtain high reliability.
In addition, in this example 1, the turning effort supply unit is to use tension spring 42, but turning effort supply unit of the present invention is not limited thereto, for example, can use the counterweight 45 of the Fig. 9 that illustrates previously, also can on the fulcrum 30 that detects belt wheel 35, torsion-coil spring be set, in this occasion, also can play the effect same with this example 2.
With Fig. 4～Fig. 7 the load detection device of example 2 of the present invention is described.Fig. 4 is the skeleton diagram of the load detection device of expression example 2 of the present invention.Fig. 5 be illustrated in the load detection device of Fig. 4, skeleton diagram that the tension side steel wire damages the back state.Fig. 6 is illustrated in the movable pulley in the load detection device of Fig. 4 and the enlarged drawing of pulley base.Fig. 7 is the cutaway view of the X-X line section of the movable pulley of presentation graphs 6 and pulley base.
The load detection device of this example 2, it is this point of sliding type that restriction this point of steel wire and the pulley base of one of relevant movable pulley are not set on tension spring 42, different with above-mentioned example 1.
In Fig. 4～Fig. 7, the 1st, base, the 3rd, a plurality of shackle rods, the 5th, spring washer, 7,8, the 22nd, nut, the 10th, a plurality of shackle springs, the 12nd, pulley base, the 13rd, a plurality of movable pulleys, the 14th, be installed on the 1st pulley base, become the fulcrum of movable pulley center of turn, the 15th, framework, the 16th, fixed pulley, the 18th, action side steel wire, the 20th, lead screw, the 30th, fulcrum, the 32nd, sensor, the 33rd, control part, the 35th, detect belt wheel, 35a is a breach, the 37th, standing finish, the 40th, tension side steel wire, the 42nd, tension spring, the 62nd, the 1st pulley base of supporting movable pulley 13,62a is a plurality of slotted holes of being located on the 1st pulley base 62 as through hole, the 63rd, have screw and connect the 2nd pulley base that the 1st pulley base 62 is moved slidably with Kong Bingneng, the 65th, connect the screw in the hole of slotted hole 62a and the 2nd pulley base 63, the 67th, be arranged at the flat gasket of the screw head side of screw 65,68 are arranged on the axle collar of the outer screw section of screw 65, the 70th, with the nut that screw 65 screws, 72 are arranged on the flat gasket of nut 70 sides, and 73 are arranged on the spring washer between nut 70 and the flat gasket 72.
Here, as shown in Figure 4,1 movable pulley 13 (being the movable pulley on paper right side) in 3 movable pulleys 13 is supported on the pulley base of the sliding type that is made of the 1st pulley base 62 and the 2nd pulley base 63.
And this sliding type pulley base is following to be constituted like that.That is, as Fig. 6, shown in Figure 7, the outer screw section of screw 65 and the axle collar 68 connect the hole of the slotted hole 62a and the 2nd pulley base 63 of the 1st pulley base 62.And, in the screw head side of screw 65, have that flat gasket 67 than the diameter larger diameter of slotted hole 62a is arranged on and the axle collar 68 between.On the other hand, in nut 70 sides, between the nut 70 and the axle collar 68, be provided with flat gasket 72 and spring washer 73.Here, please refer to Fig. 7, the length between the two ends of the axle collar 68 compares the length of the thickness of slab addition of the thickness of slab of the 1st pulley base 62 and the 2nd pulley base 63 big.Thus, the 1st pulley base 62 and the 2nd pulley 63 can be not fastening by screw 65 and nut 70, can make the 1st pulley base 62 slippage successfully.In addition, constitute the jut of the 2nd pulley base 63 that engages with the slotted hole 62a of the 1st pulley base 62 with screw 65, flat gasket 67,72, nut 70, spring washer 73.
Action just often to the load detection device of said structure describes below.
At first, action side steel wire 18 is identical with above-mentioned example 1, is alternately rolled up to hang on movable pulley 13 and the fixed pulley 16.And the occasion that the duty ratio normal condition in cage is heavy detects belt wheel 35 and rotates to clockwise direction, and sensor just detects its rotational angle.In contrast, the light occasion of duty ratio normal condition in cage detects belt wheel to anticlockwise motion, and sensor just detects its rotational angle.
At this moment, as shown in Figure 4, the 1st pulley base 62 is positioned at the cooresponding position, upper end of the movable range that is constituted with slotted hole 62a.
Action during then, to unusual generation of the load detection device of this example 2 describes.At first, in the load detection device of this example 2, also same with above-mentioned example 1, the detected value of sensor 32 become bigger or than maxim than minimum value hour, to transmission information such as cage and winchs, carry out the cargo-carring processing that prevented from control part to cage.
And as shown in Figure 5, when 40 fractures of tension side steel wire, above-mentioned sliding type pulley mechanism plays the effect of limit rotation member.Fig. 5 be illustrated in the load detection device of Fig. 4, skeleton diagram that the tension side steel wire damages the back state.
Among Fig. 5, tension side steel wire 40 ruptures at the P2 of fracture portion.At this moment, detect the tension force of belt wheel 35, just utilize action side steel wire 18 to rotate to clockwise direction (direction of arrow among Fig. 5) so detect belt wheel 35 to anticlockwise motion because tension side steel wire 40 loses to make.And when the rotation that detects belt wheel 35 surpassed normal detection range S, as mentioned above, control part 33 identified the fracture of tension side steel wire 40.
In addition, when detecting belt wheel 35 and surpass normal detection range S and rotate, the movable pulley 13 of sliding type pulley mechanism falls along the shape of slotted hole 62a, and the 1st pulley base 62 is stopping with cooresponding position, the bottom of the movable range that is made of slotted hole 62a.Thus, the rotation of detection belt wheel 35 just stops.
Like this, just can prevent the cut-out along with tension side steel wire 40, the unfavorable conditions such as cut-out of rotating electric wiring in the sensor 32 that causes excessively of detection belt wheel 35 reliably.
As mentioned above, in the load detection device of this example 2, same with above-mentioned example 1, even volume hangs over as the steel wire fracture on the detection belt wheel of rotor, can not make cage cross lifting under the cargo-carring state yet, and can not damage the part of sensor etc., can obtain high reliability.
In addition, in this example 2, slotted hole 62a is located at the 1st pulley base 62 sides, will be located at the 2nd pulley base 63 sides by the jut that screw 65 grades constitute.In contrast,, jut is located at the 1st pulley base 62 sides, also can plays the effect same with this example 2 even slotted hole 62a is located at the 2nd pulley base 63 sides.
In addition, the sliding type pulley mechanism is not limited to the structure shown in this example 2, for example, also can be provided with pillar on the 2nd pulley base 63, constitutes the state that this pillar is engaged with slotted hole 62a.In addition, the position of sliding type pulley mechanism is set, is not limited to the configuration of this example 2, for example, also can the sliding type pulley mechanism be set the movable pulley 13 of paper central authorities.
In addition, in above-mentioned each example, be to use the acceleration pick-up that is arranged on the detection belt wheel as sensor 32, but the sensor among the present invention is not limited thereto.Be applied to sensor of the present invention, as long as can detect the rotational angle that detects belt wheel.For example, on the plane of rotation that detects belt wheel, a plurality of grooves are set, detect the so-called rotary encoder that the outer optical pickocff of belt wheel detects this groove displacement, also can constitute sensor of the present invention with being arranged on.
In addition, in above-mentioned each example, be the limit rotation member that is provided with respectively behind action side steel wire 18 post-rift limit rotation members and the tension side steel wire fracture, be arranged on 1 load detection device but also both sides' limit rotation member can be concentrated.
In addition, limit rotation member of the present invention is not limited to above-mentioned each example, for example, and by projection being arranged on the assigned position that detects belt wheel 35 planes of rotation, to be arranged on the stopper element of this protrusions snap and detect outside the belt wheel 35, and can limit the rotational angle that detects belt wheel 35.
In addition, the invention is not restricted to above-mentioned each example, in the scope of technological thought of the present invention, beyond being showed, can carry out suitable change to each example in each example, this is very clearly.In addition, the quantity of said structure member, position, shape etc. are not limited to above-mentioned example, are implementing can to make suitable quantity, position, shape etc. aspect the present invention.
Utilizability on the industry
As mentioned above, load detection device of the present invention is to have corresponding with load change and rotate The sensor that detects of the rotational angle of rotor load detection device and according to the inspection of sensor The device that measured value is judged the state of steel wire. Thus, owing to can identify reliably the fracture of steel wire, Pretend to avoiding because making cage cross the bearing lift appliance that lifting causes under the state that loads The load detection device of load is useful.
In addition, load detection device of the present invention, according to the detected value of sensor whether in prescribed limit, Whether just can identify steel wire is normal condition. Thus, owing to can identify reliably the fracture of steel wire, pretend For can avoid because of make cage lifting cause under the state that cross to load to the burden of lift appliance Load detection device is useful.
In addition, load detection device of the present invention is during to allowable load or sensor during no load condition Detected value adds or deducts margin, just can determine the normal range (NR) of steel wire state. Thus, because can be reliable The fracture of ground identification steel wire is pretended to avoiding because cage lifting under the state of crossing loading is drawn The load detection device to the burden of lift appliance that rises is useful.
In addition, load detection device of the present invention is to have the rotor that rotates accordingly with load change Load detection device, the limit rotation member with restriction rotor slewing area. Thus, even the volume extension Steel wire fracture on rotor, owing to can make the rotation of rotor stop at the rotational angle of regulation, so Load detection device as the damage of the sensor part in can alleviator is useful.
In addition, load detection device of the present invention is according to the inspection of the sensor of the rotational angle that detects rotor Measured value is judged the state of steel wire. Thus, owing to can make the rotation of rotor stop at regulation Rotational angle, the load detection device of pretending to the damage of the sensor part in can alleviator is to have With. In addition, owing to can identify reliably the fracture of steel wire, pretend to avoiding because cage is existed The load detection device to the burden of lift appliance of crossing lifting under the state that loads and causing is useful.
In addition, load detection device of the present invention, according to the detected value of sensor whether in prescribed limit, Whether just can identify steel wire is normal condition. Thus, owing to can make the rotation of rotor stop at regulation Rotational angle, the load detection device of pretending to the damage of the sensor part in can alleviator is to have With. In addition, owing to can identify reliably the fracture of steel wire, pretend to avoiding because cage is existed The load detection device to the burden of lift appliance of crossing lifting under the state that loads and causing is useful.
In addition, load detection device of the present invention is during to allowable load or the detection of the sensor when zero load Value adds or deducts margin, just can determine the normal range (NR) of steel wire state. Thus, owing to can make rotor Rotation stop at the rotational angle of regulation, pretend the damage into the sensor part in can alleviator Load detection device be useful. In addition, owing to can identify reliably the fracture of steel wire, pretend and be energy Avoid the load to the burden of lift appliance because making cage lifting causing under the state that cross to load Checkout gear is useful.
In addition, load detection device of the present invention, limit rotation member are that restriction is connected with the tension side steel wire The member that the rotatory force that the rotatory force supply unit produces is supplied with to rotor. Thus, owing to can make rotor Rotation stops at the rotational angle of regulation, pretends to the damage of the sensor part in can alleviator Load detection device is useful.
In addition, load detection device of the present invention limits work by the restriction steel wire as the limit rotation member Movable range for the tension spring of rotatory force supply unit. Thus, because the rotation of rotor is stopped At the rotational angle of regulation, so the damage of the sensor part in the energy alleviator.
In addition, load detection device of the present invention, limit rotation member are the restriction amount of movements of movable pulley and right Supply with the member that rotatory force limits to rotor. Thus, because the rotation of rotor is stopped at The rotational angle of regulation is pretended the load detection dress into the damage of the sensor part in the energy alleviator It is useful putting.
In addition, load detection device of the present invention is with the 1st pulley base and the 2nd pulley with slide mechanism Seat consists of the limit rotation member. Thus, owing to can make the rotation of rotor stop at the rotational angle of regulation, The load detection device of pretending to the damage of the sensor part in can alleviator is useful.
In addition, lift appliance of the present invention is the lift appliance with the load detection device after the above-mentioned improvement. Thus, owing to can identify reliably the fracture of steel wire, pretend to avoiding because making cage cross loading State under lifting and the load detection device to the burden of lift appliance that causes is useful. In addition, Owing to can make the rotation of rotor stop at the rotational angle of regulation, pretending is sensing in can alleviator The lift appliance of the damage of the parts such as device is useful.
In addition, lift appliance of the present invention, be according to sensor detected value, with control part to the steel wire state Identify and control according to its recognition result the lift appliance of cage lifting. Thus, because energy can By the fracture of ground identification steel wire, pretend to avoiding because making cage cross lifting under the state that loads The lift appliance to the burden of lift appliance that causes is useful.
In addition, the control method of load detection device of the present invention, be have detect corresponding with load change and The control method of the load detection device of the sensor of the rotational angle of the rotor that rotates is according to described biography The detected value of sensor is judged the state of described steel wire. Thus, owing to can identify reliably the fracture of steel wire, Pretend to avoiding because making cage cross the bearing lift appliance that lifting causes under the state that loads The control method of the load detection device of load is useful.
In addition, whether the control method of load detection device of the present invention is advising according to the detected value of sensor Whether decide in the scope, just can identify steel wire is normal condition. Thus, owing to can identify reliably steel wire Fracture is pretended to avoiding because making cage cross lifting causes under the state that loads elevator is filled The control method of the load detection device of the burden of putting is useful.
In addition, the control method of load detection device of the present invention, during to allowable load or when zero load The detected value of sensor adds or deducts margin, just can determine the normal range (NR) of steel wire state. Thus, by In the fracture that can identify reliably steel wire, pretend to avoiding because cage is being crossed under the state that loads Lifting and the control method to the load detection device of the burden of lift appliance that causes is useful.
Claims (16)
1, a kind of load detection device is characterized in that, has:
The rotor that volume hangs with steel wire and rotates with the mobile interlock of described steel wire;
Detect the sensor of described rotor rotational angle;
The control part of judging according to the detected value of described sensor and to the state of described steel wire.
2, load detection device as claimed in claim 1 is characterized in that, when the described detected value that is produced by described sensor was in the scope of the maxim of predetermined described detected value and minimum value, it was normal condition that described control part is judged into described steel wire.
3, load detection device as claimed in claim 2, it is characterized in that, the maxim of described preset detection value is the value after the detected value during to admissible load adds margin, and the minimum value of described preset detection value is the value after the detected value when zero load deducts margin.
4, a kind of load detection device is characterized in that, has:
The rotor that volume hangs with steel wire and rotates with the mobile interlock of described steel wire;
Limit the limit rotation member of described rotor slewing area.
5, load detection device as claimed in claim 4 is characterized in that, also has:
Detect the sensor of described rotor rotational angle;
The control part of judging according to the detected value of described sensor and to the state of described steel wire.
6, load detection device as claimed in claim 5 is characterized in that, when the detected value that is produced by described sensor was in the scope of the maxim of predetermined described detected value and minimum value, it was normal condition that described control part is judged into described steel wire.
7, load detection device as claimed in claim 6, it is characterized in that, the maxim of described preset detection value is the value after the detected value during to admissible load adds margin, and the minimum value of described preset detection value is the value after the detected value when zero load deducts margin.
8, as each the described load detection device in the claim 4～7, it is characterized in that,
Described steel wire has the tension side steel wire, an end bearing of described tension side steel wire on the described rotor, the other end be supported on give described rotor on the turning effort supply unit of the turning effort of zero load direction,
Described limit rotation member is the member that the turning effort that described turning effort supply unit is produced is limited.
9, load detection device as claimed in claim 8 is characterized in that, described turning effort supply unit is tension spring or counterweight,
Described limit rotation member be an end bearing on described tension spring or counterweight, the other end is supported on the restriction steel wire on the fixed part.
10, as each the described load detection device in the claim 4～7, it is characterized in that, described steel wire have an end bearing on described rotor, the other end is supported on action side steel wire on the fixed part by the movable pulley of big or small interlock with load,
Described limit rotation member is the member of the amount of movement of the described movable pulley of restriction.
11, load detection device as claimed in claim 10 is characterized in that, described limit rotation member has: support described movable pulley and have through hole or the 1st pulley base of jut; Be provided with the jut that engages with described through hole or jut or through hole, and the 2nd pulley base that can make the 1st pulley base slide and move.
12, a kind of lift appliance is characterized in that, has as each described load detection device in the claim 1～11.
13, lift appliance as claimed in claim 12 is characterized in that, according to testing result to steel wire state described in the described load detection device, and the lifting of the cage in the restriction hoist trunk.
14, a kind of control method of load detection device has the sensor that volume hangs with steel wire and the rotor that rotates with the mobile interlock of described steel wire, detects described rotor rotational angle, it is characterized in that,
Has the step of judging the state of described steel wire according to the detected value of described sensor.
15, the control method of load detection device as claimed in claim 14, it is characterized in that, judge the step of described steel wire state, when being the maxim that is positioned at predetermined described detected value at the detected value that produces by described sensor, judge into the step that steel wire is a normal condition with the scope of minimum value.
16, the control method of load detection device as claimed in claim 15, it is characterized in that, the maxim of described preset detection value is the value after the detected value during to admissible load adds margin, and the minimum value of described preset detection value is the value after the detected value when zero load deducts margin.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2001/011183 WO2003053836A1 (en) | 2001-12-20 | 2001-12-20 | Load detection device and control method therefor, and elevator device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1492833A true CN1492833A (en) | 2004-04-28 |
| CN1297464C CN1297464C (en) | 2007-01-31 |
Family
ID=11738061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018227449A Expired - Lifetime CN1297464C (en) | 2001-12-20 | 2001-12-20 | Load detection device and control method therefor and elevator device |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1464607B1 (en) |
| JP (1) | JP4137795B2 (en) |
| KR (1) | KR100574434B1 (en) |
| CN (1) | CN1297464C (en) |
| DE (1) | DE60141306D1 (en) |
| WO (1) | WO2003053836A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314436A (en) * | 2015-11-25 | 2016-02-10 | 南通康禾新材料有限公司 | Outside coiling device for large package cloth |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2543848C (en) * | 2004-04-28 | 2010-04-20 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
| EP1741657B1 (en) * | 2004-04-30 | 2011-01-26 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
| KR100600997B1 (en) * | 2004-09-14 | 2006-07-19 | 주식회사 고려호이스트 | Overload prevention device of double drum type heavy duty crane |
| MX2012001956A (en) | 2009-08-21 | 2012-04-10 | Toray Industries | Fresh water generator. |
| WO2011077815A1 (en) | 2009-12-25 | 2011-06-30 | 東レ株式会社 | Water production system and operation method therefor |
| EP3191394B1 (en) | 2014-09-12 | 2018-10-31 | Otis Elevator Company | Elevator load weighing system |
| JP6429220B2 (en) * | 2015-08-27 | 2018-11-28 | 三菱電機株式会社 | Elevator equipment |
| CN112161872B (en) * | 2020-08-27 | 2024-03-29 | 芜湖航翼集成设备有限公司 | Novel special horizontal automatic tension of aircraft cable wire detects device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB659384A (en) * | 1948-11-19 | 1951-10-24 | Westinghouse Electric Int Co | Improvements in or relating to a device for determining the weight of a supported load |
| JPS4511436Y1 (en) * | 1965-03-31 | 1970-05-21 | ||
| JPS58176862U (en) * | 1982-05-19 | 1983-11-26 | 株式会社日立製作所 | Elevator load detection device |
| JPH028176A (en) * | 1988-06-24 | 1990-01-11 | Mitsubishi Electric Corp | Load detection device for elevator |
| US4984644A (en) * | 1989-01-19 | 1991-01-15 | Mid-America Scale, Inc. | Overhead lever torque suspension weighing scale |
| JPH07121795B2 (en) * | 1989-10-27 | 1995-12-25 | 三菱電機株式会社 | Elevator scale equipment |
| JP2502158B2 (en) * | 1989-12-12 | 1996-05-29 | 三菱電機株式会社 | Load detection device for elevator |
-
2001
- 2001-12-20 DE DE60141306T patent/DE60141306D1/en not_active Expired - Lifetime
- 2001-12-20 JP JP2003554560A patent/JP4137795B2/en not_active Expired - Fee Related
- 2001-12-20 WO PCT/JP2001/011183 patent/WO2003053836A1/en active IP Right Grant
- 2001-12-20 KR KR1020037010690A patent/KR100574434B1/en not_active IP Right Cessation
- 2001-12-20 EP EP01275075A patent/EP1464607B1/en not_active Expired - Lifetime
- 2001-12-20 CN CNB018227449A patent/CN1297464C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314436A (en) * | 2015-11-25 | 2016-02-10 | 南通康禾新材料有限公司 | Outside coiling device for large package cloth |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2003053836A1 (en) | 2005-04-28 |
| KR100574434B1 (en) | 2006-04-27 |
| EP1464607A1 (en) | 2004-10-06 |
| CN1297464C (en) | 2007-01-31 |
| WO2003053836A1 (en) | 2003-07-03 |
| EP1464607B1 (en) | 2010-02-10 |
| EP1464607A4 (en) | 2008-10-29 |
| JP4137795B2 (en) | 2008-08-20 |
| DE60141306D1 (en) | 2010-03-25 |
| KR20030079996A (en) | 2003-10-10 |
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