CN112678653A

CN112678653A - Transmission method of closed loop type lifter and closed loop type lifter

Info

Publication number: CN112678653A
Application number: CN202110014740.0A
Authority: CN
Inventors: 彭忠良; 赵安莉; 周建
Original assignee: Zhejiang Banmen Machinery Technology Co ltd
Current assignee: Zhejiang Banmen Machinery Technology Co ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-04-20

Abstract

The application discloses a transmission method of a closed loop type lifter and the closed loop type lifter, wherein a suspension cage and a balance weight of the closed loop type lifter are both positioned in a hoistway, the upper end and the lower end of the suspension cage are both provided with a first wheel set, and the upper end and the lower end of the balance weight are both provided with a second wheel set; a first guide wheel set is arranged on the top beam, and a second guide wheel set is arranged in the well; the traction cable is wound on the first wheel set, the second wheel set, the first guide wheel set and the second guide wheel set; the two traction cables led out from the upper end of the cage have the same stroke, the two traction cables led out from the lower end of the cage have the same stroke, the two traction cables led out from the upper end of the counterweight have the same stroke, and the two traction cables led out from the lower end of the counterweight have the same stroke. The transmission method realizes closed-loop transmission, ensures that the travel of the traction ropes at the two ends of the cage and the counterweight are the same, can save the compensation rope for higher lifting height, and simultaneously ensures that the mass difference of the traction ropes at the two sides of the traction sheave is zero, so that extra load torque cannot be increased, and the energy consumption is effectively reduced.

Description

Transmission method of closed loop type lifter and closed loop type lifter

Technical Field

The invention relates to construction equipment of constructional engineering, in particular to a transmission method of a closed loop type lifter and the closed loop type lifter.

Background

The existing construction elevator is generally positioned outside a building, and can run up and down by depending on a cage for guiding and supporting people or goods by a standard section, the outdoor elevator is greatly influenced by weather, a hoisting steel wire rope or a rack and pinion is generally adopted for direct driving, the existing domestic construction elevator (SC type construction elevator) is basically a rack and pinion type construction elevator, the energy consumption of the elevator is high, the running noise is high, and the safety and reliability of the elevator are reduced in the weather of strong wind, rain and snow because the standard section is usually in soft connection with a building body; the whole equipment is outdoors, and the surface protection requirement on the equipment is higher.

The construction hoist is positioned in an elevator shaft of a building, traction transmission is carried out in a traction machine bottom mounting mode, the rope winding ratio is 1:1, the traction machine is a three-phase asynchronous geared traction machine, the efficiency of the traction machine is low, and the energy consumption is high; the braking performance of the traction machine is also weak because the brake is located between the motor and the gearbox. After the building is lifted to a high degree, a compensation chain is required to compensate the influence of the weight of the steel wire rope on the load torque.

The construction elevator is also positioned in an elevator shaft of a building, traction transmission is carried out in a traction machine pit installation mode, the rope winding ratio is 2:1, the traction machine is a permanent magnet synchronous gearless traction machine, a suspension cage and a balance weight are respectively arranged on two sides of the traction machine, the weight of the system acts on the traction machine, the load borne by a main shaft of the system is large, the service life of a bearing of the traction machine is greatly influenced, the installation mode also needs to occupy a large shaft area, the shaft efficiency is not high, and the number of steel wire ropes is large; after the building is lifted to a high degree, a compensation chain is required to compensate the influence of the weight of the steel wire rope on the load torque.

Disclosure of Invention

The present invention addresses the above problems and overcomes at least one of the disadvantages and provides a transmission method for a closed loop type elevator and a closed loop type elevator.

The technical scheme adopted by the invention is as follows:

a cage is positioned in a shaft, a group of wheel sets are arranged at the upper end and the lower end of the cage, one end of a traction cable is fixed on a top beam through a rope head combination, the other end of the traction cable sequentially bypasses an upper wheel set of the cage, then bypasses a guide wheel fixed on the top beam upwards, then bypasses a traction wheel of a traction machine downwards, and then bypasses a lower wheel set of the cage upwards and is connected with a code wheel through a rope locking mechanism; the position of the winding traction wheel can be exchanged with the guide wheel at the corresponding position.

Or the cage is positioned in the shaft, the upper end and the lower end of the cage are respectively provided with a group of wheel sets, one end of the traction cable is fixed on the top beam through a rope head combination, the other end of the traction cable sequentially bypasses the first rope pulley of the upper wheel set of the cage, then upwards bypasses the first guide wheel fixed on the top beam, then downwards bypasses the second rope pulley of the upper wheel set of the cage, then upwards bypasses the second guide wheel fixed on the top beam, then downwards bypasses the traction wheel of the traction machine, then upwards bypasses the first rope pulley of the lower wheel set of the cage, then downwards bypasses the third guide wheel set fixed on the pit, then upwards bypasses the second rope pulley of the lower wheel set of the cage, and finally is connected with the code disc through a rope locking mechanism; the position of the winding traction sheave can be exchanged with the guide wheel at the corresponding position, and the traction sheave and the traction rope of the traction machine realize friction transmission by applying tension on the traction rope, so that the suspension cage is driven to move.

The application also discloses another transmission method of the closed-loop type elevator, wherein a suspension cage and a balance weight are both positioned in a well, the upper end and the lower end of the suspension cage are both provided with a first wheel set, the upper end and the lower end of the balance weight are both provided with a second wheel set, a first guide wheel set is arranged on a top beam, a second guide wheel set is arranged at the bottom of the well or the outer side of the bottom of the well, a traction cable is wound on the first wheel set, the second wheel set, the first guide wheel set and the second guide wheel set, one end of the traction cable is fixed on the top beam through a rope head combination, the other end of the traction cable is connected to a code disc through a locking device, the suspension cage and the balance weight are respectively positioned at the top end and the bottom end of the well; the traction cable is wound on the traction machine, a traction wheel of the traction machine is used as a guide wheel of the first guide wheel set or the second guide wheel set, and the traction wheel of the traction machine and the traction cable realize friction transmission by applying tension force on the traction cable, so that the cage and the balance weight are driven to run up and down alternately; the traction machine is arranged on the top beam, the bottom pit or the outer side of the bottom, and is a permanent magnet synchronous gearless traction machine or a three-phase asynchronous geared traction machine; the traction cable is a steel wire rope, a steel belt or a plastic-coated steel wire rope.

After the building body is capped, the conventional outdoor elevator needs to be dismantled, and materials are difficult to transport in later decoration; the transmission method realizes closed-loop transmission, ensures that the travel of the traction rope is the same, can save the compensation rope for higher lifting height, and simultaneously ensures that the mass difference of the traction rope on the two sides of the traction sheave is zero, so that additional load torque cannot be increased.

The application also discloses a closed loop type elevator, which comprises a hoistway, a top beam, a suspension cage, a balance weight, a guide mechanism, a traction rope, a traction machine, a guide wheel, a control cabinet, a control cable, a code disc and a rope head combination;

the lifting cage and the balance weight are both positioned in the hoistway, the upper end and the lower end of the lifting cage are both provided with a first wheel set, and the upper end and the lower end of the balance weight are both provided with a second wheel set;

a first guide wheel set is arranged on the top beam, a second guide wheel set is arranged at the bottom of the well or on the outer side of the bottom of the well, and the code disc is arranged at the bottom of the well or on the outer side of the bottom of the well; a monitoring device of a cage overspeed protection device is also fixed on the top beam;

the traction cable is wound on the first wheel set, the second wheel set, the first guide wheel set and the second guide wheel set, one end of the traction cable is fixed on the top beam through the rope end combination, and the other end of the traction cable is connected to the code disc; the rope head combination of the traction rope is also provided with a suspension cage overload protection device and a traction rope fracture extension protection device;

the strokes of two sections of traction cables led out upwards from a first wheel set at the upper end of the cage are the same, the strokes of two sections of traction cables led out downwards from the first wheel set at the lower end of the cage are the same, the strokes of two sections of traction cables led out upwards from a second wheel set at the upper end of the counterweight are the same, and the strokes of two sections of traction cables led out downwards from the second wheel set at the lower end of the counterweight are the same; when the crane runs, the traveling length of the traction cable at the upper end of the cage is the same as that of the traction cable at the lower end of the counterweight; when in operation, the traction rope is in a tensioning state. The traction rope is wound on the traction machine, a traction wheel of the traction machine is used as a guide wheel of the first guide wheel set or the second guide wheel set, and the suspension cage and the balance weight are driven to run up and down in an interactive mode through the rotation of the traction machine; when the elevator is installed, the suspension cage and the balance weight are respectively positioned at the top end and the bottom end of the hoistway; the traction machine is arranged on the top beam, the bottom pit or the outer side of the bottom, and adopts a permanent magnet synchronous gearless traction machine or a three-phase asynchronous geared traction machine; the traction cable is a steel wire rope, a steel belt or a plastic-coated steel wire rope.

The two sections of traction cables which are led out have the same stroke, which means that the lengths of the two sections of traction cables are basically the same; in actual use, the traction machine can be installed at the bottom of the well, outside the well or on the top beam. The tractor of this application is connected with the switch board through the control cable, receives switch board control work.

In one embodiment of the invention, the locking device is further included, the traction cable is connected to the code wheel through the locking device, the locking device is used for locking the traction cable and preventing the code wheel from rotating to influence the lifting operation, and the locking device can be integrated with the code wheel or arranged separately.

In one embodiment of the invention, the elevator car further comprises a protective canopy, wherein the protective canopy is used for covering the upper end of the hoistway, and the lower part of the protective canopy is provided with a hoist; the top beam is provided with a sling, a protective guardrail and a jacking limiting pulley, and the jacking limiting pulley is used for reducing the process of secondary alignment of jacking installation and improving the jacking efficiency and accuracy; the protective guard bar is foldable or fixed; the jacking limiting pulley is telescopic or fixed.

The protective canopy can prevent rain, snow, gravel and the like from entering a well; the hoist can be used for the operation of the lift of part.

In one embodiment of the present invention, there are two sets of the first guiding wheel sets, and two sets of the second guiding wheel sets; one end of the traction cable is fixed with the top beam, the other end of the traction cable firstly bypasses a first wheel set at the upper end of the cage downwards, then upwards passes through a first group of first guide wheel sets, then downwards, bypasses a second wheel set at the upper end of the balance weight, then upwards bypasses a second group of first guide wheel sets, then downwards bypasses a first group of second guide wheel sets, then upwards bypasses a second wheel set at the lower end of the balance weight, then downwards bypasses a second group of second guide wheel sets, upwards bypasses a first wheel set at the lower end of the cage, and finally passes through a locking device and then is connected to the code wheel; the traction sheave of the traction machine is used as a set of second guide wheel sets.

In one embodiment of the present invention, the first wheel set includes a plurality of wheels; the first group of first guide wheel sets comprises a plurality of rotating wheels, so that various traction rope winding ratios are realized, and the energy consumption is further reduced.

In one embodiment of the present invention, there are two first guide wheel sets and two second guide wheel sets, where the first guide wheel set includes two reversing wheels located at the lower end of the hoistway and a traction wheel of the traction machine located outside the hoistway; one end of the traction cable is fixed with the top beam, the other end of the traction cable firstly bypasses a first wheel set at the upper end of the cage downwards, then upwards passes through a first group of first guide wheel sets, then downwards, bypasses a second wheel set at the upper end of the counterweight, then upwards bypasses a second group of first guide wheel sets, then downwards sequentially bypasses a first reversing wheel, a traction wheel of the tractor and a second reversing wheel, then upwards bypasses a second wheel set at the lower end of the counterweight, then downwards bypasses a second group of second guide wheel sets, upwards bypasses the first wheel set at the lower end of the cage, and finally is connected to the code wheel through a locking device; the locking device can be integrated with the code disc or arranged separately, and the traction sheave of the traction machine is used as a group of second guide wheel groups.

In one embodiment of the present invention, there are two sets of the first guiding wheel sets, and two sets of the second guiding wheel sets; one end of the traction cable is fixed with the top beam, the other end of the traction cable firstly bypasses a first wheel set at the upper end of the cage downwards, then upwards passes through a first group of first guide wheel sets, then downwards, bypasses a second wheel set at the upper end of the balance weight, then upwards bypasses a second group of first guide wheel sets, then downwards bypasses a first group of second guide wheel sets, then upwards bypasses a second wheel set at the lower end of the balance weight, then downwards bypasses a second group of second guide wheel sets, upwards bypasses a first wheel set at the lower end of the cage, and finally passes through a locking device and then is connected to the code wheel; the locking device can be integrated with the code disc or arranged separately, and the traction sheave of the traction machine is used as a group of first guide wheel groups.

The application also discloses another closed loop type elevator which comprises a hoistway, a top beam, a suspension cage, a balance weight, a guide mechanism, a traction rope, a traction machine, a guide wheel, a control cabinet, a control cable, a coded disc, a locking device and a rope head combination;

two groups of first guide wheel sets are arranged on the top beam, two groups of second guide wheel sets are arranged at the bottom of the well, and the code disc is arranged at the bottom of the well; a monitoring device of a cage overspeed protection device is also fixed on the top beam;

one end of the traction cable is fixed on the top beam through a rope head combination, the other end of the traction cable firstly downwards bypasses a second wheel set at the upper end of the balance weight, then upwards bypasses a first group of first guide wheel sets, then downwards bypasses a first wheel set at the upper end of the suspension cage, then upwards bypasses a second group of first guide wheel sets, then downwards bypasses a first group of second guide wheel sets, upwards bypasses a first wheel set at the lower end of the suspension cage, downwards bypasses a second group of second guide wheel sets, then upwards bypasses a second wheel set at the lower end of the balance weight, and finally downwards passes through a locking device and then is connected to the code wheel; the rope head combination of the traction rope is also provided with a suspension cage overload protection device and a traction rope fracture extension protection device;

the strokes of two sections of traction cables led out upwards from a first wheel set at the upper end of the cage are the same, the strokes of two sections of traction cables led out downwards from the first wheel set at the lower end of the cage are the same, the strokes of two sections of traction cables led out upwards from a second wheel set at the upper end of the counterweight are the same, and the strokes of two sections of traction cables led out downwards from the second wheel set at the lower end of the counterweight are the same; when the crane runs, the traveling length of the traction cable at the upper end of the cage is the same as that of the traction cable at the lower end of the counterweight; when in operation, the traction rope is in a tensioning state. The traction rope is wound on the traction machine, a traction wheel of the traction machine is used as a guide wheel of the first guide wheel set or the second guide wheel set, and the suspension cage and the balance weight are driven to run up and down in an interactive mode through the rotation of the traction machine; when the elevator is installed, the suspension cage and the balance weight are respectively arranged at the top end and the bottom end of the hoistway; the traction machine can be arranged on the top beam, on the bottom pit or on the outer side of the bottom, and adopts a permanent magnet synchronous gearless traction machine or a three-phase asynchronous geared traction machine; the traction cable is a steel wire rope or a steel belt or a plastic-coated steel wire rope.

In one embodiment of the invention, the elevator further comprises a locking device, the traction cable is connected to the code wheel through the locking device, the locking device is used for locking the traction cable and preventing the residual rope in the code wheel from influencing the lifting operation, and the locking device can be integrated with the code wheel or arranged separately.

The invention has the beneficial effects that: after the building body is capped, the conventional outdoor elevator needs to be dismantled, and materials are difficult to transport in later decoration; closed loop transmission is realized to this application, has guaranteed that the stroke of haulage cable is the same, can save the compensation cable to higher lifting height time, guarantees simultaneously that the haulage rope is zero in the poor zero of traction sheave both sides quality, just so can not increase extra load torque.

Description of the drawings:

FIG. 1 is a first schematic view of a closed-loop elevator according to embodiment 1;

FIG. 2 is a second schematic view of the closed-loop type lifter according to embodiment 1;

FIG. 3 is a third schematic view of the closed-loop elevator of embodiment 1;

FIG. 4 is a fourth schematic view of the closed-loop elevator of embodiment 1;

FIG. 5 is a partial schematic view of a closed-loop elevator according to embodiment 2;

FIG. 6 is a partial schematic view of a closed loop elevator according to embodiment 3;

fig. 7 is a partial schematic view of a closed-loop elevator according to embodiment 4.

The figures are numbered:

1. a hoistway; 2. a top beam; 3. a suspension cage; 4. balancing weight; 5. a traction cable; 6. a control cabinet; 7. code disc; 8. a traction machine; 9. a locking device; 10. a first wheel set; 11. a second wheel set; 12. a first guide wheel set; 13. a second guide wheel set; 14. combining rope ends; 15. a protective canopy; 16. a gourd; 17. a sling; 18. jacking a limiting pulley; 19. a first traction cable; 20. a second traction cable; 21. a first code wheel; 22. a second code wheel; 23. a reversing wheel; 24. a first sheave of the upper sheave group; 25. a second sheave of the upper sheave group; 26. a first sheave of the lower sheave group; 27. a third guide wheel set; 28. the second rope sheave of the lower wheel set.

The specific implementation mode is as follows:

the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 4, in a transmission method of a closed loop type elevator, a cage 3 and a counterweight 4 are both located in a hoistway 1, the upper end and the lower end of the cage 3 are both provided with a first wheel set 10, the upper end and the lower end of the counterweight 4 are both provided with a second wheel set 11, a top beam 2 is provided with a first guide wheel set 12, the bottom of the hoistway 1 or the outer side of the bottom of the hoistway 1 is provided with a second guide wheel set 13, a traction cable 5 is wound on the first wheel set 10, the second wheel set 11, the first guide wheel set 12 and the second guide wheel set 13, one end of the traction cable 5 is fixed on the top beam 2 through a rope head combination 14, the other end is connected to a code wheel 7 through a locking device 9, the cage 3 and the counterweight 4 are respectively located at the top end and the bottom end of the hoistway 1 during installation, and the counterweight 4 is increased to reduce the; the traction cable 5 is wound on the traction machine 8, a traction wheel of the traction machine 8 is used as a guide wheel of the first guide wheel set 12 or the second guide wheel set 13, and the traction cable 5 is applied with a tensile force, so that the traction wheel of the traction machine 8 and the traction cable 5 realize friction transmission, and the cage 3 and the counterweight 4 are driven to run up and down alternately; the traction machine 8 is arranged on the top beam 2, at the outer side of a bottom pit or at the bottom, and the traction machine 8 is a permanent magnet synchronous gearless traction machine or a three-phase asynchronous geared traction machine; the traction cable 5 is a steel wire rope, a steel belt or a plastic-coated steel wire rope.

After the building body is capped, the conventional outdoor elevator needs to be dismantled, and materials are difficult to transport in later decoration, the cage 3 and the counterweight 4 are both positioned in the hoistway 1, so that the construction progress is not influenced by the external environment, and the elevator can be used in the hoistway 1 all the time; the transmission method realizes closed-loop transmission, ensures that the strokes of the traction ropes 5 are the same, can save compensation ropes for higher lifting height, and simultaneously ensures that the mass difference of the traction ropes on the two sides of the traction sheave is zero, so that additional load torque cannot be increased.

As shown in fig. 1 to 4, the present application further discloses a closed loop type elevator, which includes a hoistway 1, a top beam 2, a suspension cage 3, a counterweight 4, a guide mechanism, a traction rope 5, a traction machine 8, a guide wheel, a control cabinet 6, a control cable, a code wheel 7, a locking device 9 and a rope end combination 14;

the suspension cage 3 and the balance weight 4 are both positioned in the hoistway 1, the upper end and the lower end of the suspension cage 3 are both provided with a first wheel set 10, and the upper end and the lower end of the balance weight 4 are both provided with a second wheel set 11;

a first guide wheel set 12 is arranged on the top beam 2, a second guide wheel set 13 is arranged at the bottom of the well 1 or on the outer side of the bottom of the well 1, and the coded disc 7 is arranged at the bottom of the well 1 or on the outer side of the bottom of the well 1; a monitoring device of a cage overspeed protection device is also fixed on the top beam;

the traction cable 5 is wound on a first wheel set 10, a second wheel set 11, a first guide wheel set 12 and a second guide wheel set 13, one end of the traction cable 5 is fixed on the top beam 2 through a rope end combination 14, the other end of the traction cable is connected to the code wheel 7 through a locking device 9, the locking device 9 is used for locking the traction cable 5, the influence of the rotation of the code wheel 7 on the lifting operation is prevented through monitoring, and the locking device and the code wheel can be integrated together or separately arranged; the rope head combination of the traction rope is also provided with a suspension cage overload protection device and a traction rope fracture extension protection device;

the strokes of two sections of traction cables 5 led out upwards from a first wheel set 10 at the upper end of the cage 3 are the same, the strokes of two sections of traction cables 5 led out downwards from the first wheel set 10 at the lower end of the cage 3 are the same, the strokes of two sections of traction cables 5 led out upwards from a second wheel set 11 at the upper end of the counterweight 4 are the same, and the strokes of two sections of traction cables 5 led out downwards from the second wheel set 11 at the lower end of the counterweight 4 are the same; when in operation, the walking length of the traction cable 5 at the upper end of the suspension cage 3 is the same as that of the traction cable 5 at the lower end of the counterweight 4; in operation the traction cable 5 is in tension. The traction rope 5 is wound on the traction machine 8, a traction wheel of the traction machine 8 is used as a guide wheel of the first guide wheel set 12 or the second guide wheel set 13, and the suspension cage 3 and the balance weight 4 are driven to run up and down alternately by the rotation of the traction machine 8; when in installation, the suspension cage 3 and the balance weight 4 are respectively positioned at the top and bottom ends of the hoistway 1; the traction machine 8 is arranged on the top beam 2, at the outer side of a bottom pit or at the bottom, and the traction machine 8 adopts a permanent magnet synchronous or three-phase asynchronous motor; the traction cable 5 is a steel wire rope, a steel belt or a plastic-coated steel wire rope.

The two sections of the drawn traction ropes 5 have the same stroke, which means that the lengths of the two sections of the traction ropes 5 are basically the same; in actual use, the hoisting machine 8 may be mounted on the bottom of the hoistway 1, outside the hoistway 1, or on the top sill 2. The tractor 8 of this application is connected with switch board 6 through the control cable, receives switch board 6 control work.

As shown in fig. 1, the closed loop type elevator of the present embodiment further includes a protective canopy 15, the protective canopy 15 is used for covering the upper end of the hoistway 1, and a hoist 16 is mounted on the lower portion of the protective canopy 15; the top beam 2 is provided with a sling 17, a protective guardrail and a jacking limiting pulley 18, and the jacking limiting pulley 18 is used for reducing the secondary alignment procedure of jacking installation and improving the jacking efficiency and accuracy; the traction machine 8 is a permanent magnet synchronous gearless traction machine 8 or a three-phase asynchronous geared traction machine 8; the protective guard bar is foldable or fixed; the jacking limit pulley 18 is telescopic or fixed. The protective canopy 15 can prevent rain, snow, gravel and the like from entering the hoistway 1; the hoist 16 can be used for the lifting operation of the parts.

The winding method of the present embodiment has multiple groups, for example:

as shown in fig. 1, there are two sets of the first guide wheel sets 12, and there are two sets of the second guide wheel sets 13; one end of the traction cable 5 is fixed with the top beam 2, and the other end of the traction cable firstly bypasses a first wheel set 10 at the upper end of the cage 3 downwards, then upwards bypasses a first group of first guide wheel sets 12, then downwards bypasses a second wheel set 11 at the upper end of the counterweight 4, then upwards bypasses a second group of first guide wheel sets 12, then downwards bypasses a first group of second guide wheel sets 13, then upwards bypasses a second wheel set 11 at the lower end of the counterweight 4, then downwards bypasses a second group of second guide wheel sets 13, upwards bypasses a first wheel set 10 at the lower end of the cage 3, and finally is connected to the code wheel 7 through a locking device 9; the traction sheave of the hoisting machine 8 is used as a set of second guide wheel sets 13. In fig. 1, a first wheel set 10 includes a plurality of wheels. In fig. 2, the first set of first guide wheel sets 12 includes a plurality of wheels.

As shown in fig. 3, there are two sets of the first guide sheave group 12 and two sets of the second guide sheave group 13, wherein the first guide sheave group includes two diverting sheaves 23 located at the lower end of the hoistway 1 and a traction sheave of the traction machine 8 located outside the hoistway 1; one end of the traction rope 5 is fixed with the top beam 2, the other end of the traction rope firstly bypasses the first wheel set 10 at the upper end of the cage 3 downwards, then upwards bypasses the first guide wheel set 12 of the first group, then downwards, bypasses the second wheel set 11 at the upper end of the counterweight 4, then upwards bypasses the first guide wheel set 12 of the second group, then downwards sequentially bypasses the first reversing wheel 23, the traction wheel of the traction machine 8 and the second reversing wheel 23, then upwards bypasses the second wheel set 11 at the lower end of the counterweight 4, then downwards bypasses the second guide wheel set 13, upwards bypasses the first wheel set 10 at the lower end of the cage 3, and finally is connected to the coded disc 7 through the locking device 9; the traction sheave of the hoisting machine 8 is used as a set of second guide wheel sets 13.

As shown in fig. 4, there are two sets of the first guide wheel sets 12, and there are two sets of the second guide wheel sets 13; one end of the traction cable 5 is fixed with the top beam 2, and the other end of the traction cable firstly bypasses a first wheel set 10 at the upper end of the cage 3 downwards, then upwards bypasses a first group of first guide wheel sets 12, then downwards bypasses a second wheel set 11 at the upper end of the counterweight 4, then upwards bypasses a second group of first guide wheel sets 12, then downwards bypasses a first group of second guide wheel sets 13, then upwards bypasses a second wheel set 11 at the lower end of the counterweight 4, then downwards bypasses a second group of second guide wheel sets 13, upwards bypasses a first wheel set 10 at the lower end of the cage 3, and finally is connected to the code wheel 7 through a locking device 9; the traction sheave of the hoisting machine 8 is used as a set of first guide wheel sets 12.

Example 2

As shown in fig. 5, the embodiment discloses a closed loop type elevator, which includes a hoistway 1, a top beam 2, a cage 3, a counterweight 4, a guiding mechanism, a traction rope 5, a traction machine 8, a guide wheel, a control cabinet 6, a control cable, a code wheel 7, a locking device 9 and a rope end combination 14;

two groups of first guide wheel sets 12 are arranged on the top beam 2, two groups of second guide wheel sets 13 are arranged at the bottom of the well 1, and the code disc 7 is arranged at the bottom of the well 1; a monitoring device of a cage overspeed protection device is also fixed on the top beam;

one end of the traction cable 5 is fixed on the top beam 2 through a rope end combination 14, the other end of the traction cable 5 firstly downwards rounds a second wheel set 11 at the upper end of the counterweight 4, then upwards rounds a first group of first guide wheel sets 12, then downwards rounds a first wheel set 10 at the upper end of the cage 3, then upwards rounds a second group of first guide wheel sets 12, then downwards rounds a first group of second guide wheel sets 13, upwards rounds a first wheel set 10 at the lower end of the cage 3, then downwards rounds a second group of second guide wheel sets 13, upwards rounds a second wheel set 11 at the lower end of the counterweight 4, and finally downwards passes through a locking device 9 and then is connected to the coded disc 7, the locking device can be integrated with the coded disc or separately arranged, and the rope end combination 14 of the traction cable 5 is further provided with a cage overload protection device and a traction cable fracture extension protection device;

the strokes of two sections of traction cables 5 led out upwards from a first wheel set 10 at the upper end of the cage 3 are the same, the strokes of two sections of traction cables 5 led out downwards from the first wheel set 10 at the lower end of the cage 3 are the same, the strokes of two sections of traction cables 5 led out upwards from a second wheel set 11 at the upper end of the counterweight 4 are the same, and the strokes of two sections of traction cables 5 led out downwards from the second wheel set 11 at the lower end of the counterweight 4 are the same; when in operation, the walking length of the traction cable 5 at the upper end of the suspension cage 3 is the same as that of the traction cable 5 at the lower end of the counterweight 4; in operation the traction cable 5 is in tension. The traction rope 5 is wound on the traction machine 8, a traction wheel of the traction machine 8 is used as a guide wheel of the first guide wheel set 12 or the second guide wheel set 13, and the suspension cage 3 and the balance weight 4 are driven to run up and down alternately by the rotation of the traction machine 8; when the elevator is installed, the suspension cage 3 and the counterweight 4 are respectively arranged at the top and bottom ends of the hoistway 1; the traction machine 8 can be arranged on the top beam 2, on the bottom pit or on the outer side of the bottom, and the traction machine 8 is a permanent magnet synchronous gearless traction machine or a three-phase asynchronous geared traction machine; the traction cable 5 is a steel wire rope or a steel belt or a plastic-coated steel wire rope.

Example 3

As shown in fig. 6, in the transmission method of a closed loop type elevator, a cage 3 is positioned in a hoistway, a group of first wheel sets 10 are arranged at the upper end and the lower end of the cage, one end of a traction cable 5 is fixed on a top beam 2 through a rope end combination 14, the other end of the traction cable 5 sequentially bypasses the first wheel set 10 at the upper end of the cage 3, then bypasses a first guide wheel 12 fixed on the top beam 2 upwards, then bypasses a traction wheel of a traction machine 8 downwards, then bypasses the first wheel set 10 at the lower end of the cage upwards, and is connected with a code wheel 7 through a rope locking mechanism; the winding method can also arrange a plurality of groups of guide wheels on the top beam and the pit, and the traction rope sequentially winds each rope wheel so as to reduce the load on the traction machine. In actual use, the traction sheave can be interchanged with the first guide sheave 12.

Example 4

As shown in fig. 7, a transmission method of a closed loop type elevator, a cage 3 is located in a hoistway, a set of wheel sets are arranged at the upper end and the lower end of the cage, one end of a traction cable 5 is fixed on a top beam 2 through a rope head combination 14, the other end of the traction cable 5 sequentially bypasses a first rope pulley 24 of an upper wheel set of the cage, then bypasses a second rope pulley 25 of the upper wheel set of the cage 3 after upwards bypassing a first guide wheel 12 fixed on the top beam 2, then bypasses a second rope pulley 13 fixed on the top beam 2, then bypasses a traction wheel of a traction machine 8 downwards, then bypasses a first rope pulley 26 of a lower wheel set of the cage 3 upwards, then bypasses a third guide wheel set 27 fixed on a pit downwards, bypasses a second rope pulley 28 of the lower wheel set of the cage 3 upwards bypassing, and finally is connected with a code disc 7 through a rope locking mechanism; the winding traction machine can also be fixed on the top beam or on the outer side of the pit, and the first guide wheel of the top beam can also be fixed on the pit. The traction sheave of the traction machine and the traction rope realize friction transmission by applying tension on the traction rope, so that the cage is driven to move. In actual use, the traction sheave of the traction machine 8 can be interchanged with the guide sheaves.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.

Claims

1. A transmission method of a closed loop type elevator is characterized in that a cage is positioned in a shaft, a group of wheel sets are arranged at the upper end and the lower end of the cage, one end of a traction cable is fixed on a top beam through a rope head combination, the other end of the traction cable sequentially bypasses an upper wheel set of the cage, then upwards bypasses a guide wheel fixed on the top beam, then downwards bypasses a traction wheel of a traction machine, then upwards bypasses a lower wheel set of the cage, and then is connected with a code wheel through a rope locking mechanism; the position of the winding traction wheel can be exchanged with the guide wheel at the corresponding position;

2. A transmission method of a closed loop type elevator is characterized in that a suspension cage and a balance weight are both positioned in a well, the upper end and the lower end of the suspension cage are both provided with a first wheel set, the upper end and the lower end of the balance weight are both provided with a second wheel set, a top beam is provided with a first guide wheel set, the bottom of the well or the outer side of the bottom of the well is provided with a second guide wheel set, a traction cable is wound on the first wheel set, the second wheel set, the first guide wheel set and the second guide wheel set, one end of the traction cable is fixed on the top beam through a rope head combination, the other end of the traction cable is connected to a code disc through a locking device, the suspension cage and the balance weight are respectively positioned at the top end and the bottom end of the well during installation; the traction cable is wound on the traction machine, a traction wheel of the traction machine is used as a guide wheel of the first guide wheel set or the second guide wheel set, and the traction wheel of the traction machine and the traction cable realize friction transmission by applying tension force on the traction cable, so that the cage and the balance weight are driven to run up and down alternately; the traction machine is arranged on the top beam, the bottom pit or the outer side of the bottom, and is a permanent magnet synchronous gearless traction machine or a three-phase asynchronous geared traction machine; the traction cable is a steel wire rope, a steel belt or a plastic-coated steel wire rope.

3. A closed loop type elevator is characterized by comprising a hoistway, a top beam, a suspension cage, a balance weight, a guide mechanism, a traction rope, a traction machine, a guide wheel, a control cabinet, a control cable, a code disc and a rope head combination;

the strokes of two sections of traction cables led out upwards from a first wheel set at the upper end of the cage are the same, the strokes of two sections of traction cables led out downwards from the first wheel set at the lower end of the cage are the same, the strokes of two sections of traction cables led out upwards from a second wheel set at the upper end of the counterweight are the same, and the strokes of two sections of traction cables led out downwards from the second wheel set at the lower end of the counterweight are the same; when the crane runs, the traveling length of the traction cable at the upper end of the cage is the same as that of the traction cable at the lower end of the counterweight; when in operation, the traction rope is in a tensioning state; the traction rope is wound on the traction machine, a traction wheel of the traction machine is used as a guide wheel of the first guide wheel set or the second guide wheel set, and the suspension cage and the balance weight are driven to run up and down in an interactive mode through the rotation of the traction machine; when the elevator is installed, the suspension cage and the balance weight are respectively positioned at the top end and the bottom end of the hoistway; the traction machine is arranged on the top beam, the bottom pit or the outer side of the bottom, and adopts a permanent magnet synchronous gearless traction machine or a three-phase asynchronous geared traction machine; the traction cable is a steel wire rope, a steel belt or a plastic-coated steel wire rope.

4. The closed loop elevator set forth in claim 3 further comprising locking means by which the traction cable is connected to the code wheel, said locking means for locking the traction cable against rotation of the code wheel affecting the lifting operation, said locking means being integral with or separate from the code wheel.

5. The closed loop elevator as claimed in claim 3, further comprising a protective canopy for covering an upper end of the hoistway, a hoist being mounted to a lower portion of the protective canopy; the top beam is provided with a sling, a protective guardrail and a jacking limiting pulley, and the jacking limiting pulley is used for reducing the process of secondary alignment of jacking installation and improving the jacking efficiency and accuracy; the protective guard bar is foldable or fixed; the jacking limiting pulley is telescopic or fixed.

6. The closed loop elevator set forth in claim 4 wherein there are two sets of said first guide pulley set and two sets of said second guide pulley set; one end of the traction cable is fixed with the top beam, the other end of the traction cable firstly bypasses a first wheel set at the upper end of the cage downwards, then upwards passes through a first group of first guide wheel sets, then downwards, bypasses a second wheel set at the upper end of the balance weight, then upwards bypasses a second group of first guide wheel sets, then downwards bypasses a first group of second guide wheel sets, then upwards bypasses a second wheel set at the lower end of the balance weight, then downwards bypasses a second group of second guide wheel sets, upwards bypasses a first wheel set at the lower end of the cage, and finally passes through a locking device and then is connected to the code wheel; the traction sheave of the traction machine is used as a group of second guide wheel groups; the first wheel set comprises one or more wheels; the first group of first guide wheel sets comprises one or more rotating wheels, so that various traction rope winding ratios are realized, and the energy consumption is further reduced.

7. The closed loop elevator according to claim 4, wherein there are two sets of the first guide sheave group and two sets of the second guide sheave group, wherein the first guide sheave group includes two diverting sheaves located at a lower end of the hoistway and a traction sheave of the traction machine located at an outer side of the hoistway; one end of the traction cable is fixed with the top beam, the other end of the traction cable firstly bypasses a first wheel set at the upper end of the cage downwards, then upwards passes through a first group of first guide wheel sets, then downwards, bypasses a second wheel set at the upper end of the counterweight, then upwards bypasses a second group of first guide wheel sets, then downwards sequentially bypasses a first reversing wheel, a traction wheel of the tractor and a second reversing wheel, then upwards bypasses a second wheel set at the lower end of the counterweight, then downwards bypasses a second group of second guide wheel sets, upwards bypasses the first wheel set at the lower end of the cage, and finally is connected to the code wheel through a locking device; the traction sheave of the traction machine is used as a set of second guide wheel sets.

8. The closed loop elevator set forth in claim 4 wherein there are two sets of said first guide pulley set and two sets of said second guide pulley set; one end of the traction cable is fixed with the top beam, the other end of the traction cable firstly bypasses a first wheel set at the upper end of the cage downwards, then upwards passes through a first group of first guide wheel sets, then downwards, bypasses a second wheel set at the upper end of the balance weight, then upwards bypasses a second group of first guide wheel sets, then downwards bypasses a first group of second guide wheel sets, then upwards bypasses a second wheel set at the lower end of the balance weight, then downwards bypasses a second group of second guide wheel sets, upwards bypasses a first wheel set at the lower end of the cage, and finally passes through a locking device and then is connected to the code wheel; the traction sheave of the traction machine is used as a set of first guide wheel sets.

9. A closed loop type elevator is characterized by comprising a hoistway, a top beam, a suspension cage, a balance weight, a guide mechanism, a traction rope, a traction machine, a guide wheel, a control cabinet, a control cable, a code disc and a rope head combination;

one end of the traction cable is fixed on the top beam through a rope head combination, the other end of the traction cable firstly downwards bypasses a second wheel set at the upper end of the balance weight, then upwards bypasses a first group of first guide wheel sets, then downwards bypasses a first wheel set at the upper end of the suspension cage, then upwards bypasses a second group of first guide wheel sets, then downwards bypasses a first group of second guide wheel sets, upwards bypasses a first wheel set at the lower end of the suspension cage, then downwards bypasses a second group of second guide wheel sets, upwards bypasses a second wheel set at the lower end of the balance weight, and finally downwards is connected to the code wheel; the rope head combination of the traction rope is also provided with a suspension cage overload protection device and a traction rope fracture extension protection device;

the strokes of two sections of traction cables led out upwards from a first wheel set at the upper end of the cage are the same, the strokes of two sections of traction cables led out downwards from the first wheel set at the lower end of the cage are the same, the strokes of two sections of traction cables led out upwards from a second wheel set at the upper end of the counterweight are the same, and the strokes of two sections of traction cables led out downwards from the second wheel set at the lower end of the counterweight are the same; when the crane runs, the traveling length of the traction cable at the upper end of the cage is the same as that of the traction cable at the lower end of the counterweight; when in operation, the traction rope is in a tensioning state; the traction rope is wound on the traction machine, a traction wheel of the traction machine is used as a guide wheel of the first guide wheel set or the second guide wheel set, and the suspension cage and the balance weight are driven to run up and down in an interactive mode through the rotation of the traction machine; when the elevator is installed, the suspension cage and the balance weight are respectively arranged at the top end and the bottom end of the hoistway; the traction machine can be arranged on the top beam, on the bottom pit or on the outer side of the bottom, and adopts a permanent magnet synchronous gearless traction machine or a three-phase asynchronous geared traction machine; the traction cable is a steel wire rope or a steel belt or a plastic-coated steel wire rope.

10. The closed loop elevator set forth in claim 9 further comprising locking means by which the traction cable is connected to the code wheel, said locking means for locking the traction cable against rotation of the code wheel affecting the lifting operation, said locking means being integral with or separate from the code wheel.