CN114538252B - Traction steel wire rope wrap angle continuous adjusting device and adjusting method - Google Patents
Traction steel wire rope wrap angle continuous adjusting device and adjusting method Download PDFInfo
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- CN114538252B CN114538252B CN202210057450.9A CN202210057450A CN114538252B CN 114538252 B CN114538252 B CN 114538252B CN 202210057450 A CN202210057450 A CN 202210057450A CN 114538252 B CN114538252 B CN 114538252B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 84
- 239000010959 steel Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000009471 action Effects 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 12
- 230000002829 reductive effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 8
- 238000012795 verification Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
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- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/10—Arrangements of ropes or cables for equalising rope or cable tension
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses a traction steel wire rope wrap angle continuous adjusting device and an adjusting method, wherein a lifting power piece drives a guide wheel to lift, a steel wire rope wound out through the lower edge of a car pulley sequentially winds the upper edge of a traction wheel, the upper edge of the guide wheel and the lower edge of a counterweight pulley, the axial lead of a tensioning wheel is lower than that of the traction wheel, and the tensioning power piece is suitable for driving the tensioning wheel to move left and right so as to push or keep away from the lower edge of the tensioning wheel from the steel wire rope between the traction wheel and the guide wheel. The position of the tensioning wheel and the position of the guide wheel are changed to rapidly, continuously and accurately obtain the wrap angle range required by safe and reliable operation of the elevator, the potential safety hazard caused by overlarge and overlarge traction force in the use process of the elevator is solved, the problem that the safe and reliable operation of the elevator can be met due to the limitation of building space but the wrap angle of the traction wheel is still in the verification range is solved, the theoretical calculation result of the traction force in design is tested and verified, and an effective verification method is provided for installation, transformation and supervision of the elevator.
Description
Technical Field
The invention relates to traction structure design, in particular to a traction steel wire rope wrap angle continuous adjusting device and an adjusting method.
Background
With the increase of the holding quantity and the increase of the use quantity of the elevator, accidents caused by the elevator occur sometimes, and how to ensure the safety of taking the elevator, thereby meeting the beautiful living needs of people on safe trip and becoming a problem of increasing attention of government departments.
The traction driving elevator is characterized in that a steel wire rope is tensioned on a traction sheave of an elevator traction machine, and traction force is generated through friction between the steel wire rope and a rope groove of the traction sheave to drive a car to move up and down. The traction condition is basically guaranteed to ensure the normal operation of the elevator, and the traction force is guaranteed under the conditions of normal operation, bottom loading, emergency stopping and the like according to the requirement of annex M in the national standard GB7588-2003 safety Specification for elevator manufacture and installation. Namely: when the car needs to be lifted normally, enough traction capacity is needed (the traction sheave and the steel wire rope do not slip); when the car needs to be stopped, the steel wire rope cannot slip on the traction sheave, namely the car cannot lift. When the traction condition is damaged, the steel wire rope is easy to slip, the car can have faults such as top punching, squat bottom, uneven layer and the like, and personal injury and trapped conditions such as shearing, extrusion, impact and the like can occur in severe cases. Thus, drag is one of the most important parameters in elevator design and is also an important factor in considering elevator safety, comfort and stability.
The main factors influencing the magnitude of the traction force are the equivalent friction coefficient f of the hoisting rope in the rope groove (mainly depending on the rope groove shape, the rope groove material, the lubrication of the rope groove, etc.) and the wrap angle of the rope on the traction sheave. When the elevator is designed and shaped, the equivalent friction coefficient is determined through theoretical model selection calculation, and then the traction force detection is carried out by combining a certain fixed wrap angle so as to verify the rationality of the design. However, the elevator in the use site is limited by the installation space, the actual wrap angle of the steel wire rope acting on the traction sheave may be different from the design wrap angle of the inspection and authentication, and whether the traction force can meet the safe operation of the elevator becomes a current difficult problem to be determined urgently; specifically, for the target load locked during design, how to establish the safety range of the wrap angle during design so as to directly determine whether the actual wrap angle is safe during installation is a current urgent problem. In the prior art, the type test is carried out on the elevator during design, the wrap angle between the steel wire rope and the traction sheave is a fixed value, but in the use site of the elevator, due to the limitation of building space, the wrap angle between the steel wire rope of the elevator and the traction sheave can be increased or decreased, the traction force is also changed along with the change, and the traction force at the moment can not ensure the safe operation of the elevator.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a traction steel wire rope wrap angle continuous adjusting device which can continuously, rapidly and accurately adjust and measure the wrap angle safety range.
According to the embodiment of the first aspect of the invention, the continuous adjustment device for the wrap angle of the traction steel wire rope comprises a traction machine, a supporting component and a tensioning component, wherein the traction machine comprises a traction motor and a traction wheel connected with the traction motor in a transmission manner, the supporting component comprises a guide wheel and a lifting power piece suitable for driving the guide wheel to lift, the steel wire rope which is wound out from the lower edge of a car pulley sequentially winds the upper edge of the traction wheel, the upper edge of the guide wheel and the lower edge of a counterweight pulley, the tensioning component comprises a tensioning wheel and a tensioning power piece, the axial lead of the tensioning wheel is lower than that of the traction wheel, and the tensioning power piece is suitable for driving the tensioning wheel to move left and right so that the lower edge of the tensioning wheel pushes or is far away from the steel wire rope between the traction wheel and the guide wheel.
According to the embodiment of the first aspect of the invention, the continuous traction steel wire rope wrap angle adjusting device has at least the following beneficial effects: the wrap angle of the steel wire rope on the traction sheave can be adjusted by changing the positions of the tensioning sheave and the guide sheave, the minimum safety wrap angle can be measured rapidly, continuously and accurately, the wrap angle range required by safe and reliable operation of the elevator is obtained, and the potential safety hazard caused by overlarge and overlarge traction force in the use process of the elevator is solved; the device can continuously adjust the wrap angle under the conditions of no load and heavy load; the device for continuously changing the wrap angle of the steel wire rope and the traction sheave, which is provided by the invention, has the advantages of reasonable structure, convenience in adjustment and installation and good universality, solves the problem that the elevator can safely and reliably run because of the limitation of building space but the wrap angle of the traction sheave is still in the verification range, can perform test verification on the theoretical calculation result of the traction force in the elevator design, and provides an effective verification method for elevator installation, transformation and supervision.
According to some embodiments of the invention, the support assembly further comprises a first bracket and a first slide, the first bracket is provided with a first guide rail suitable for lifting and sliding of the first slide, the lifting power piece is connected with the first bracket, and the guide wheel is rotatably connected with the first slide.
According to some embodiments of the invention, the lifting power piece comprises a rotating shaft and a lifting motor, the first bracket is provided with a switching block, the rotating shaft is in threaded connection with the switching block, the upper end of the rotating shaft supports and is in rotary connection with the first sliding seat, and the lifting motor is in transmission connection with the rotating shaft.
According to some embodiments of the invention, the first support is provided with a front group and a back group of guide rails, one group of guide rails comprises two first guide rails which are arranged along the left-right direction and are opposite to each other, the first sliding seat is adaptively provided with a front group and a back group of sliding blocks, and one group of sliding blocks comprises two first sliding blocks which are arranged along the left-right direction and are opposite to each other.
According to some embodiments of the invention, the tensioning assembly further comprises a second support and a second sliding seat, the second support is provided with a second guide rail suitable for sliding left and right of the second sliding seat, the tensioning power piece is a push-pull cylinder body, one end of the push-pull cylinder body is connected with the second support, the other end of the push-pull cylinder body is connected with the second sliding seat, and the tensioning wheel is rotatably connected with the second sliding seat.
According to some embodiments of the invention, the second bracket is provided with V-shaped guide blocks, at least two V-shaped guide blocks support one push-pull cylinder together, and the at least two V-shaped guide blocks are arranged along the left-right direction.
According to some embodiments of the invention, the traction machine further comprises a mounting table and a pressing block, wherein a plurality of inverted T-shaped grooves are formed in the upper end of the mounting table, the T-shaped grooves extend in the left-right direction, the T-shaped grooves penetrate through the left-right ends of the mounting table, locking screws fastened to the T-shaped grooves are suitable for locking the pressing block, and the pressing block is suitable for pressing the traction machine.
According to some embodiments of the invention, the traction machine further comprises a third guide rail, a positioning motor and a screw rod in transmission connection with the positioning motor, wherein the screw rod is suitable for driving the traction machine to move back and forth along the third guide rail.
According to some embodiments of the invention, the traction machine further comprises a mounting platform on which the traction machine, the support assembly, and the tensioning assembly are all mounted.
A traction steel wire rope wrap angle continuous adjustment method comprises the following steps:
180 degrees confirm that the guide wheel is kept still at a position completely lower than the tension wheel, the tension wheel moves leftwards, the wrap angle of the steel wire rope on the traction wheel is 180 degrees, a preset load is placed in the lift car, and/or the steel wire rope is hung on a preset counter weight, the braking of the lift car is released, the traction wheel is in a braking state, when the steel wire rope slides relative to the traction wheel, the fact that the friction force between the steel wire rope and the traction wheel is insufficient is indicated, the steel wire rope and/or the traction wheel needs to be selected again, and when the steel wire rope can be kept still relative to the traction wheel, the minimum wrap angle starts to be detected;
confirming a minimum wrap angle, executing a first adjustment action, wherein in the first adjustment action, the guide wheel keeps still, the tensioning wheel gradually moves right, the first adjustment action gradually reduces the wrap angle of the steel wire rope on the traction wheel, and stopping the movement of the tensioning wheel when the steel wire rope starts to skid in the first adjustment action, so as to determine the wrap angle of the steel wire rope on the traction wheel at the moment; when the steel wire rope does not slip relative to the traction wheel all the time in the first adjustment action, the second adjustment action is executed after the tension wheel is far away from the guide wheel and the position of the tension wheel does not influence the rising of the guide wheel, in the second adjustment action, the guide wheel rises gradually, the wrap angle of the steel wire rope on the traction wheel is reduced gradually by the second adjustment action, the rising of the guide wheel is stopped when the steel wire rope starts to slip in the second adjustment action, and the wrap angle of the steel wire rope on the traction wheel at the moment is determined.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of a perspective view structure of a traction wire rope wrap angle continuous adjustment device according to an embodiment of the present invention;
fig. 2 is a front view of the traction wire rope wrap angle continuous adjusting device of fig. 1 after simplifying part of the structure;
fig. 3 is a partial structural schematic view of the traction wire rope wrap angle continuous adjustment device shown in fig. 1;
FIG. 4 is an exploded view of the structure shown in FIG. 3;
fig. 5 is a schematic structural view of a supporting assembly of the traction wire rope wrap angle continuous adjusting device shown in fig. 1;
FIG. 6 is an exploded view of the support assembly shown in FIG. 5;
fig. 7 is a schematic structural view of a tensioning assembly of the traction wire rope wrap angle continuous adjusting device shown in fig. 1;
FIG. 8 is an exploded view of the tensioning assembly of FIG. 7;
fig. 9 is a schematic structural view of a rope locking assembly of the traction wire rope wrap angle continuous adjusting device shown in fig. 1;
FIG. 10 is an exploded view of the locking cord assembly of FIG. 9;
fig. 11 is a diagram of a method for continuously adjusting the wrap angle of a traction wire rope.
Traction machine 100, traction sheave 110;
the lifting device comprises a supporting component 200, a guide wheel 210, a lifting power piece 220, a rotating shaft 221, a lifting motor 222, a first bracket 230, a first guide rail 231, an adapter 232, a first sliding seat 240 and a first sliding block 241;
the tensioning device comprises a tensioning assembly 300, a tensioning wheel 310, a tensioning power piece 320, a second bracket 330, a second guide rail 331, a V-shaped guide block 332 and a second sliding seat 340;
the device comprises a mounting table 410, a T-shaped slot 411, a pressing block 420, a locking screw 430, a third guide rail 440, a positioning motor 450 and a screw rod 460;
a mounting platform 500;
a locking string assembly 600, a third bracket 610, a lifting plate 620, a spring 630, and a height screw 640;
a wire rope 710, a car 720, and a counterweight 730.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a plurality means one or more, and a plurality means two or more, and it is understood that greater than, less than, exceeding, etc. does not include the present number, and it is understood that greater than, less than, within, etc. include the present number. If first and second are described for the purpose of distinguishing technical features only, it should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 8, a traction wire rope wrap angle continuous adjustment apparatus according to an embodiment of the first aspect of the present invention includes a traction machine 100, a supporting assembly 200 and a tensioning assembly 300, the traction machine 100 including a traction motor and a traction sheave 110 drivingly connected to the traction motor, the supporting assembly 200 including a guide sheave 210 and a lifting power member 220 adapted to drive the guide sheave 210 to lift, a wire rope 710 wound through a lower edge of a car pulley sequentially wound around an upper edge of the traction sheave 110, an upper edge of the guide sheave 210 and a lower edge of a counterweight pulley, the tensioning assembly 300 including a tension sheave 310 and a tensioning power member 320, an axial line of the tension sheave 310 being lower than an axial line of the traction sheave 110, the tensioning power member 320 being adapted to drive the tension sheave 310 to move left and right so that a lower edge of the tension sheave 310 is pushed or moved away from the wire rope 710 between the traction sheave 110 and the guide sheave 210. It will be appreciated that the exchange of car 720 with the position of counterweight 730 is an equivalent replacement.
Referring to fig. 1 and 2, it can be understood that in the elevator field, both ends of the wire rope 710 are respectively mounted to a wall or a mounting platform 500 as described below; the wire rope 710 hangs the car 720 and the counterweight 730, and the wire rope 710 winds around the lower edge of the car sheave, the upper edge of the traction sheave 110, and the lower edge of the counterweight sheave. When the traction sheave 110 rotates clockwise as shown in fig. 2 by means of the reliable friction between the wire rope 710 and the traction sheave 110, the car 720 rises and the counterweight 730 descends; conversely, when the traction sheave 110 rotates counterclockwise as shown in fig. 2, the car 720 descends and ascends toward the weight 730.
It is understood that in the elevator field, the wire rope 710, the traction sheave 110, the guide sheave 210, and the tension sheave 310 are on one plane. In the elevator field, a car is connected with a brake such as a brake caliper, and the brake caliper is suitable for clamping a corresponding guide rail to stop the car.
The axial line of the tension sheave 310 is lower than that of the traction sheave 110, that is, it can be understood that the tension sheave 310 is at a lower height position in the up-down direction with reference to fig. 2. The wire rope 710 can wrap the upper edge of the sheave 110 and the upper edge of the guide sheave 210 of Rao Yeyin, so it can be understood that the traction sheave 110 and the guide sheave 210 are offset in the left-right direction (side-to-side).
Referring to fig. 11, the traction wire rope wrap angle continuous adjustment method includes a 180 degree confirmation step and a minimum wrap angle confirmation step.
180 degrees confirm that the guide wheel 210 is kept still at a position completely lower than the tension wheel 310, the tension wheel 310 moves leftwards, the wrap angle of the steel wire rope on the traction wheel 110 is 180 degrees (normal error + -5 degrees), a preset load is placed in the elevator car and/or the steel wire rope is hung on a preset counterweight, the braking of the elevator car is released, the traction wheel 110 is in a braking state, when the steel wire rope slips relative to the traction wheel 110, the defect of insufficient friction force between the steel wire rope and the traction wheel 110 is indicated, the steel wire rope and/or the traction wheel 110 needs to be selected again, and when the steel wire rope can be kept still relative to the traction wheel 110, the minimum wrap angle starts to be detected.
Confirming a minimum wrap angle, and executing a first adjustment action, wherein in the first adjustment action, the guide wheel 210 keeps still, the tension wheel 310 gradually moves right, the wrap angle of the steel wire rope on the traction wheel 110 is gradually reduced by the first adjustment action, when the steel wire rope starts to skid in the first adjustment action, the movement of the tension wheel 310 is stopped, and the wrap angle Y1 of the steel wire rope on the traction wheel 110 at the moment is determined; when the steel wire rope does not slip relative to the traction sheave 110 all the time in the first adjustment operation, the second adjustment operation is executed after the tension sheave 310 is far away from the guide sheave 210 and the position of the tension sheave 310 does not affect the rising of the guide sheave 210, in the second adjustment operation, the guide sheave 210 gradually rises, the wrap angle of the steel wire rope on the traction sheave 110 is gradually reduced by the second adjustment operation, the rising of the guide sheave 210 is stopped when the steel wire rope starts to slip in the second adjustment operation, and the wrap angle Y2 or Y3 of the steel wire rope on the traction sheave 110 at the moment is determined.
When the wrap angle is smaller than 90, most of the steel wire ropes and the traction sheave 110 cannot meet enough friction force, so that the adjustment of the wrap angle can be stopped after Y2 is measured; in addition, in elevator operation, it is generally required that the wrap angle of the wire rope on the traction sheave 110 cannot be 90 degrees. For a better determination of the safety range of the wrap angle, the actual minimum safety wrap angle will be measured even if it is smaller than 90 degrees.
The invention can not only rapidly determine whether the steel wire rope and the traction sheave 110 are properly selected, but also rapidly, continuously and accurately determine the minimum safety wrap angle. The method starts to decrease from 180 degrees, and the method is accurate and rapid in reverse order measurement.
According to the embodiment of the first aspect of the invention, the continuous traction steel wire rope wrap angle adjusting device has at least the following beneficial effects: the wrap angle of the steel wire rope 710 on the traction sheave 110 can be adjusted by changing the positions of the tension sheave 310 and the guide sheave 210, the minimum safety wrap angle can be measured rapidly, continuously and accurately, the wrap angle range required by safe and reliable operation of the elevator is obtained, and the potential safety hazard caused by overlarge and overlarge traction force in the use process of the elevator is solved; the device can continuously adjust the wrap angle under the conditions of no load and heavy load; the invention provides a device which is reasonable in structure, convenient to adjust and install, good in universality and convenience, and capable of continuously changing the wrap angle of the steel wire rope 710 and the traction sheave 110, solves the problem that the elevator can safely and reliably run because of the limitation of building space but the wrap angle of the traction sheave 110 is still in the verification range, can test and verify the theoretical calculation result of the traction force in the elevator design, and provides an effective verification method for elevator installation, transformation and supervision.
A controller is also included, and the support power member, the tensioning power member 320, etc. are electrically connected to the controller.
In some embodiments of the present invention, an angle dial is further provided on the frame of the traction machine 100, and the present invention can rough read the wrap angle size by a person.
In some embodiments of the present invention, a wrap angle sensor is provided on the frame of the traction machine 100, the wrap angle sensor is adapted to detect the size of the wrap angle of the wire rope 710 on the traction sheave 110, and the wrap angle sensor is electrically connected to the controller. The wrap angle sensor can be an annular or arc-shaped photoelectric sensor, and innumerable photoelectric detection units are integrated in the wrap angle sensor and distributed in an arc manner; at the two ends of the wrap angle, the wire rope 710 starts to be separated from the traction sheave 110, and the photo detection unit of the point has a detection, and the photo detection unit of the point corresponds to the angle thereof.
Referring to fig. 5 and 6, in some embodiments of the present invention, the support assembly 200 further includes a first bracket 230 and a first slider 240, the first bracket 230 is provided with a first rail 231 adapted for lifting and sliding movement of the first slider 240, the lifting power member 220 is connected to the first bracket 230, and the guide wheel 210 is rotatably connected to the first slider 240. The lifting power piece 220 can be an air cylinder, a hydraulic cylinder, an electric cylinder, a combination mode of a motor and a screw nut pair/a belt/a chain and the like. In the invention, the guide wheel 210 can be lifted more stably, the continuity and the regular gradual change of the wrap angle change are ensured, and the problem of error distortion is solved.
Referring to fig. 6, in some embodiments of the present invention, the elevation power member 220 includes a rotation shaft 221 and an elevation motor 222, the first bracket 230 is provided with a switching block 232, the rotation shaft 221 is screw-coupled with the switching block 232, an upper end of the rotation shaft 221 is supported and rotatably coupled with a first slider 240, and the elevation motor 222 is drivingly coupled with the rotation shaft 221.
Preferably, the rotation shaft 221 is drivingly connected to an encoder adapted to feed back the amount of movement (angular displacement/lifting displacement, etc.) of the rotation shaft 221.
Referring to fig. 6, in some embodiments of the present invention, the first bracket 230 is provided with a front and rear set of guide rails, one set of guide rails includes two first guide rails 231 arranged in the left-right direction and facing away, and the first slider 240 is adapted to be provided with a front and rear set of sliders, one set of sliders includes two first sliders 241 arranged in the left-right direction and facing away. In the invention, a first sliding seat 240 supports a steel wire rope 710 through a guide wheel 210, the steel wire rope 710 spans the middle position of the first sliding seat 240, the front end and the rear end of the first sliding seat 240 correspond to guide structures, and the first sliding seat 240 approximates a simple supporting beam structure with positioning at two ends; the wire rope 710 is wound around the upper edge of the guide wheel 210 from left to right, and both left and right ends of the first slider 240 correspond to the guide structure, so as to prevent the first slider 240 from tipping left or right.
Referring to fig. 1, 7 and 8, in some embodiments of the present invention, the tensioning assembly 300 further includes a second bracket 330 and a second slider 340, the second bracket 330 is provided with a second rail 331 adapted to slide left and right of the second slider 340, the tensioning power member 320 is a push-pull cylinder, one end of the push-pull cylinder is connected to the second bracket 330, the other end is connected to the second slider 340, and the tensioning wheel 310 is rotatably connected to the second slider 340. It will be appreciated that the push-pull cylinder may be a pneumatic, hydraulic or electric cylinder, and the second slider 340 is adapted to slide in a left-right direction, so that the push-pull cylinder extends in the left-right direction.
Referring to fig. 8, in some embodiments of the present invention, a V-shaped guide block 332 is disposed on the second bracket 330, at least two V-shaped guide blocks 332 support a push-pull cylinder together, and at least two V-shaped guide blocks 332 are arranged in a left-right direction. During the telescoping process of the cylinder piston rod, the V-shaped guide block 332 performs centering bearing on the push-pull cylinder, and the V-shaped guide block is used for guiding the push-pull cylinder in the left-right direction when the cylinder piston rod stretches.
Referring to fig. 1, 3 and 4, in some embodiments of the present invention, the traction machine further comprises a mounting table 410 and a pressing block 420, wherein a plurality of inverted T-shaped slots 411 are formed at the upper end of the mounting table 410, the T-shaped slots 411 extend in the left-right direction, the T-shaped slots 411 penetrate through the left-right ends of the mounting table 410, locking screws 430 fastened to the T-shaped slots 411 are adapted to lock the pressing block 420, and the pressing block 420 is adapted to press the traction machine 100. The continuous adjustment method of the wrap angle of the traction wire rope further includes an assembling step of adjusting the traction machine 100 left and right so that the wire rope 710 between the traction sheave 110 and the car sheave is inclined in a vertical direction or from bottom to top to right with reference to fig. 2.
In some embodiments of the present invention, a pad is coupled to the lower end of the traction machine 100, and the height of the traction machine 100 is adjusted by the pad.
Referring to fig. 1, 3 and 4, in some embodiments of the present invention, the traction machine further includes a third guide rail 440, a positioning motor 450, and a screw shaft 460 drivingly connected to the positioning motor 450, the screw shaft 460 being adapted to drive the traction machine 100 to move back and forth along the third guide rail 440.
Referring to fig. 1, in some embodiments of the present invention, a mounting platform 500 is further included, and the traction machine 100, the support assembly 200, and the tension assembly 300 are all assembled on the mounting platform 500. The traction machine 100, the supporting component 200 and the tensioning component 300 can be assembled to the mounting platform 500 in a workshop in a preassembled manner, the assembly in the workshop is convenient, quick and high in quality, and the assembled wrap angle adjusting mechanism is hoisted to a well or a steel frame and the like.
In some embodiments of the present invention, the traction machine 100, the support assembly 200, and the tension assembly 300 are directly mounted to a hoistway wall or steel frame, etc.
Referring to fig. 1, 9 and 10, in some embodiments of the present invention, the locking assembly 600 further includes a locking rope assembly 600, where the locking rope assembly 600 includes a third support 610, a lifting plate 620 and a spring 630, the third support 610 is connected to the mounting platform 500, the lifting plate 620 is supported on the third support 610, the third support 610 is provided with a chute adapted to move the lifting plate 620 up and down, the steel wire rope 710 passes through the lifting plate 620 and the spring 630 from bottom to top, the lower end of the spring 630 abuts against the lifting plate 620, and the upper end of the spring 630 is adapted to support a nut at the end of the steel wire rope 710. It is understood that in the elevator field, the wire rope 710 is generally provided with a plurality of rope grooves, and the traction sheave 110 and the guide sheave 210 are each provided with a plurality of rope grooves. The continuous adjustment method of the wrap angle of the traction steel wire rope further comprises a debugging step, wherein nuts at the end parts of the steel wire ropes 710 are screwed, so that the deformation amounts of springs 630 corresponding to the steel wire ropes 710 are identical (the intervals between the nuts and the lifting plates 620 are identical), namely, the steel wire ropes 710 exert equal bearing force, and the steel wire ropes 710 are in the same tightening state (the steel wire ropes 710 in the rope grooves are wrapped Rao Lunzi in the same degree).
The end of the wire rope 710 is typically a double nut locking structure; in the debugging step, the position of the lower nut is determined first, and then the upper nut is rotated to enable the upper nut to be extruded and pasted to the lower nut.
Referring to fig. 9 and 10, in some embodiments of the present invention, the third support 610 is screwed with a height screw 640, and both front and rear ends of the lifting plate 620 are respectively supported by the corresponding height screw 640, and the upper ends of the height screw 640 are supported and rotatably connected to the lifting plate 620, i.e., the lifting plate 620 is supported on the third support 610 by the height screw 640, thereby ensuring the mobility of the lifting plate 620 in the up-down direction. In the adjustment step, the height screw 640 is rotated to bring the lifter plate 620 to a horizontal position.
Referring to fig. 9 and 10, in some embodiments of the present invention, a proximity sensor is also connected to the end of the wire rope 710, the proximity sensor being adapted to detect whether the end of the wire rope is lowered to approach the lifter plate, the proximity switch being electrically connected to the controller. The invention effectively solves the safety problem when the lift car is overloaded or suddenly overloaded, the end of the steel wire rope descends or suddenly descends, and the proximity switch detects. Proximity sensors are a common type of device for machine tools and the like, and are a general knowledge.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (9)
1. A continuous adjustment method for the wrap angle of a traction steel wire rope, which is applied to a continuous adjustment device for the wrap angle of the traction steel wire rope, characterized in that the adjustment device comprises:
a traction machine (100) comprising a traction motor and a traction sheave (110) drivingly connected to the traction motor;
the supporting component (200) comprises a guide wheel (210), a lifting power piece (220) which is suitable for driving the guide wheel (210) to lift, a steel wire rope (710) which is wound out through the lower edge of a car pulley, and the upper edge of the traction wheel (110), the upper edge of the guide wheel (210) and the lower edge of a counterweight pulley in sequence;
the tensioning assembly (300) comprises a tensioning wheel (310) and a tensioning power piece (320), wherein the axial lead of the tensioning wheel (310) is lower than that of the traction wheel (110), and the tensioning power piece (320) is suitable for driving the tensioning wheel (310) to move left and right so that the lower edge of the tensioning wheel (310) pushes or is far away from the steel wire rope (710) between the traction wheel (110) and the guide wheel (210);
the adjusting method comprises the following steps:
180 degrees confirm that the guide wheel (210) is kept still at a position completely lower than the tension wheel (310), the tension wheel (310) moves leftwards, so that the wrap angle of the steel wire rope on the traction wheel (110) is 180 degrees, a preset load and/or a preset counterweight block is hung on the steel wire rope in the elevator car, the braking of the elevator car is released, the traction wheel (110) is in a braking state, when the steel wire rope slips relative to the traction wheel (110), the defect that the friction force between the steel wire rope and the traction wheel (110) is insufficient is overcome, the steel wire rope and/or the traction wheel (110) needs to be selected again, and when the steel wire rope can be kept still relative to the traction wheel (110), the minimum wrap angle is detected;
confirming a minimum wrap angle, and executing a first adjustment action, wherein in the first adjustment action, the guide wheel (210) keeps still, the tension wheel (310) gradually moves rightwards, the wrap angle of the steel wire rope on the traction wheel (110) is gradually reduced by the first adjustment action, and when the steel wire rope starts to skid in the first adjustment action, the movement of the tension wheel (310) is stopped, and the wrap angle of the steel wire rope on the traction wheel (110) at the moment is determined; when the steel wire rope does not slip relative to the traction sheave (110) all the time in the first adjustment action, the second adjustment action is executed after the tension sheave (310) is far away from the guide sheave (210) and the position of the tension sheave (310) does not influence the lifting of the guide sheave (210), in the second adjustment action, the guide sheave (210) is gradually lifted, the second adjustment action enables the wrap angle of the steel wire rope on the traction sheave (110) to be gradually reduced, and in the second adjustment action, the lifting of the guide sheave (210) is stopped when the steel wire rope starts to slip, and the wrap angle of the steel wire rope on the traction sheave (110) at the moment is determined.
2. The continuous adjustment method of the wrap angle of the traction wire rope according to claim 1, characterized in that the supporting assembly (200) further comprises a first bracket (230) and a first slider (240), the first bracket (230) is provided with a first guide rail (231) suitable for lifting and sliding of the first slider (240), the lifting power member (220) is connected with the first bracket (230), and the guide wheel (210) is rotatably connected with the first slider (240).
3. The continuous adjustment method of the wrap angle of the traction wire rope according to claim 2, wherein the lifting power piece (220) comprises a rotating shaft (221) and a lifting motor (222), the first bracket (230) is provided with a switching block (232), the rotating shaft (221) is in threaded connection with the switching block (232), the upper end of the rotating shaft (221) supports and is in rotary connection with the first sliding seat (240), and the lifting motor (222) is in transmission connection with the rotating shaft (221).
4. The continuous adjustment method of the wrap angle of the traction wire rope according to claim 2 or 3, wherein the first bracket (230) is provided with a front group and a rear group of guide rails, one group of guide rails comprises two first guide rails (231) which are arranged along the left-right direction and are opposite, the first sliding seat (240) is provided with a front group and a rear group of sliding blocks in an adapting way, and one group of sliding blocks comprises two first sliding blocks (241) which are arranged along the left-right direction and are opposite.
5. The continuous adjustment method of the wrap angle of the traction wire rope according to claim 1, wherein the tensioning assembly (300) further comprises a second bracket (330) and a second sliding seat (340), the second bracket (330) is provided with a second guide rail (331) suitable for the second sliding seat (340) to slide left and right, the tensioning power piece (320) is a push-pull cylinder, one end of the push-pull cylinder is connected with the second bracket (330), the other end of the push-pull cylinder is connected with the second sliding seat (340), and the tensioning wheel (310) is rotatably connected with the second sliding seat (340).
6. The continuous adjustment method of the wrap angle of the traction wire rope according to claim 5, wherein the second bracket (330) is provided with V-shaped guide blocks (332), at least two V-shaped guide blocks (332) jointly support one push-pull cylinder, and the at least two V-shaped guide blocks (332) are arranged along the left-right direction.
7. The continuous adjustment method of the wrap angle of the traction steel wire rope according to claim 1, further comprising a mounting table (410) and a pressing block (420), wherein a plurality of inverted T-shaped grooves (411) are formed in the upper end of the mounting table (410), the T-shaped grooves (411) extend in the left-right direction, the T-shaped grooves (411) penetrate through the left-right ends of the mounting table (410), locking screws (430) fastened to the T-shaped grooves (411) are suitable for locking the pressing block (420), and the pressing block (420) is suitable for pressing the traction machine (100).
8. The continuous adjustment method of the wrap angle of the traction wire rope according to claim 1, further comprising a third guide rail (440), a positioning motor (450) and a screw (460) drivingly connected to the positioning motor (450), the screw (460) being adapted to drive the traction machine (100) to move back and forth along the third guide rail (440).
9. The continuous adjustment method of the wrap angle of a hoisting wire rope according to any one of claims 1 to 3, 5 to 7, further comprising a mounting platform (500), wherein the hoisting machine (100), the support assembly (200) and the tensioning assembly (300) are all mounted on the mounting platform (500).
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