CN213950273U

CN213950273U - Elevator dragging equipment

Info

Publication number: CN213950273U
Application number: CN202022807362.5U
Authority: CN
Inventors: 彭忠良; 赵安莉; 周健
Original assignee: Zhejiang Banmen Machinery Technology Co ltd
Current assignee: Zhejiang Banmen Machinery Technology Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-08-13
Anticipated expiration: 2030-11-27

Abstract

The application discloses elevator dragging equipment, which comprises a suspension cage, a balance weight, a guiding mechanism, a tractor, a first guiding wheel set and a second guiding wheel set, wherein the suspension cage and the balance weight run up and down; one end of the first traction cable is fixed relative to the suspension cage and connected with the first coded disc, and the other end of the first traction cable upwards bypasses the first guide wheel set and then is connected with the balance weight downwards; one end of the second traction rope is fixed relatively to the lower portion of the well and connected with the second yard disc, the other end of the second traction rope winds the lower wheel set upwards and then winds the lower wheel set on the traction machine, then winds the lower wheel set on the second guide wheel set upwards and winds the upper wheel set downwards, and finally is fixed with the well top beam upwards through the rope end combination. The length that this application can constantly adjust the pull cable through the code wheel and guiding mechanism satisfies the change of building height. Through indirect drive's mode, reduce the cycle number and the quantity of haulage cable, reduce the reactive loss that haulage cable system quality caused, improve the operating efficiency.

Description

Elevator dragging equipment

Technical Field

The utility model relates to a building engineering construction equipment, construction elevator equipment in the concretely relates to well especially relates to lift dragging method and equipment.

Background

The existing construction elevator is generally positioned outside a building, and runs up and down by depending on a cage of a standard knot for guiding and supporting people or goods, the outdoor elevator is greatly influenced by weather, generally adopts a winch steel wire rope or a rack and pinion 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 because the standard knot and the building body are generally in flexible connection, the guiding deviation of the standard knot is increased in the case of high wind and thunderstorm weather and high lifting height, and the safety and reliability of the elevator are reduced; the risks of instability and rollover, cage rushing and falling and the like are easy to occur; the whole equipment is outdoors, and the surface protection requirement on the equipment is higher.

And the construction hoist is positioned in an elevator shaft of a building, traction transmission is realized by adopting a traction machine bottom-mounted installation mode, and the rope winding ratio is 1: 1, the traction machine is a three-phase asynchronous gear traction machine, and the traction machine has low efficiency and high energy consumption; because the brake is positioned between the motor and the gearbox, the braking performance of the traction machine is also weaker, and the uplink overspeed protection of the suspension cage can be realized by means of a complicated mechanism.

And the construction hoist is positioned in an elevator shaft of a building, traction transmission is realized by adopting a traction machine pit mounting mode, and the rope winding ratio is 2: the method comprises the following steps that 1, a 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 a system acts on the traction machine, the load borne by a main shaft of the traction machine is large, the influence on the service life of a bearing of the traction machine is large, the installation mode also needs to occupy a large well area, the utilization rate of well efficiency is not high, and the number of steel wire ropes needing to be configured is large; in addition, the traction machine is fixed in the pit, and the influence of accumulated water and a humid environment of the pit on the safety and reliability of the traction machine is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, overcome at least one not enough, provided lift and dragged method and equipment.

The utility model adopts the following technical scheme:

a dragging method of an elevator is characterized in that a rope winding mode is divided into two sections: the cage and the balance weight are connected together through a first traction cable, the traction machine and the balance weight are connected through a second traction cable, and the cage is indirectly driven to move by driving the balance weight to move through the traction machine; the second traction rope adopts a rope winding ratio of 2:1 or 4:1 so as to improve the comprehensive operation efficiency.

A kind of elevator dragging equipment, including cage, counter weight, cage and counter weight move up and down guiding mechanism, hauler and all install on first guide wheelset and second guide wheelset on the overhead beam of well, said cage and counter weight are located in well; the traction machine is positioned on one side of the counterweight, the traction machine can be fixed at the top, the bottom, the wall surface or the outside of the hoistway, a control system of the traction machine comprises an energy feedback device, the traction machine comprises a mechanical energy storage device, the traction machine is in a permanent magnet synchronous gearless or three-phase asynchronous gear form, an upper wheel set is installed at the upper end of the counterweight, a lower wheel set is installed at the lower end of the counterweight, a locking mechanism is arranged on the counterweight, and the traction machine is used for limiting the counterweight when the hoistway beam is jacked;

the elevator car further comprises a first traction cable, a second traction cable, a first coded disc and a second coded disc, wherein the first coded disc is fixed on the cage, the second coded disc is located at the bottom of the well and fixed in or out of the well, and the first coded disc and the second coded disc can be used for manually or automatically winding and unwinding ropes;

one end of the first traction cable is fixed relative to the suspension cage and is connected with the first coded disc, and the other end of the first traction cable upwards bypasses the first guide wheel set and then is downwards connected with the balance weight; one end of the second traction rope is fixed relatively to the lower portion of the well and connected with the second stacking plate, the other end of the second traction rope upwards winds the lower wheel set of the balance weight and then winds the lower wheel set of the balance weight on the traction machine, then winds the second guide wheel set upwards and then winds the upper wheel set of the balance weight downwards, and finally upwards is fixed with the well top beam through the rope end combination.

The traction cable can be of a friction transmission pair material structure such as a steel wire rope, a steel belt or a plastic-coated steel wire rope. In actual application, the tractor is a permanent magnet synchronous gearless tractor. The code wheel of this application is used for depositing the surplus that corresponds the haulage cable, and when the high gradual increase of building body, can be through the haulage cable surplus of depositing in the release code wheel, constantly adjust the length of haulage cable and guiding mechanism's length.

The elevator is located in a hoistway of a building, so that the influence of outdoor weather reasons on construction progress is avoided; this example illustrates how the handling workload of the hoisting machine and the control system due to frequent lifting of the equipment is reduced according to the way of installing the hoisting machine at the bottom; the hoisting cage is driven to run up and down by adopting indirect driving, namely the tractor directly drags the counterweight to move through the second traction cable, and the rope winding scheme reduces the cycle times and the number of the traction cables, reduces the reactive loss caused by the quality of a traction cable system and improves the running efficiency through the combination of two traction cables; the traction cable on the counterweight adopts a ratio of 2:1, so that the energy consumption and the system load borne by a main shaft bearing of the traction machine are effectively reduced, and the service life of the traction machine is prolonged; the vibration and noise of the tractor are filtered by the balance weight and the traction rope, and only a small part of the vibration and noise is transmitted to the suspension cage, so that the riding comfort is improved; the traction machine is positioned on one side of the counterweight, can be fixed on the top, the bottom, the wall surface or the outside of the hoistway and other installation modes, and occupies a smaller hoistway area; the counter weight is equipped with locking mechanism, and when the sky beam mechanism jack-up, be used for the spacing of counter weight, reduce the risk that the cage shifted, also reduce the system weight of jack-up.

In one embodiment of the present invention, the first guide wheel set includes one or more first guide wheels, the second guide wheel set includes one or more second guide wheels, the upper wheel set includes one or more upper wheels, and the lower wheel set includes one or more lower wheels.

In one embodiment of the present invention, the suspension device further comprises a compensation cable, wherein one end of the compensation cable is connected to the lower end of the suspension cage, and the other end of the compensation cable is connected to the counterweight.

When the lifting height is high, the weight of the traction cable can be compensated through the compensation chain.

In one embodiment of the present invention, the elevator further comprises a turning wheel located at a lower portion of the hoistway, and one end of the second traction cable passes through the turning wheel and then is connected to the second stacking plate.

In one embodiment of the present invention, the elevator further comprises a water accumulation monitoring device disposed at the bottom of the hoistway, the suspension cage is provided with a first traction cable fracture overload protection device, and the second traction cable is provided with a pressure detection protection device; the buffer is matched with the balance weight, and a traction cable extended fracture protection device is arranged on the buffer;

the intelligent safety door is characterized in that a camera of the Internet of things module is arranged in the cage, a door of the cage is provided with a self-locking mechanism, an electrical switch is verified after the door is closed in place to prevent the non-professional person in the cage from misoperation, and the cage door is provided with a person clamping prevention protection device;

the cage is provided with an overspeed protection device and is used for stopping the cage in case of overspeed and limiting the cage in case of jacking;

the end part of the hoistway roof beam is provided with a jacking limiting device for reducing the work of jacking installation secondary alignment and preventing the roof beam from tipping, and the jacking efficiency and accuracy are improved, wherein the jacking limiting device is provided with an elastic adjusting device.

The accumulated water monitoring device, the first traction cable fracture protection device, the extended fracture protection device and the pressure detection device on the second traction cable can improve the safety and reliability of the equipment; the camera is arranged, so that the running condition of the equipment can be monitored conveniently, and running data can be transmitted to the background server in real time; in actual use, the door of the cage can be provided with a special triangular key for a qualified professional to operate the equipment.

The application also discloses another elevator dragging device, which comprises a suspension cage, a balance weight, a guiding mechanism, a traction machine, a first guiding wheel set, a second guiding wheel set and a third guiding wheel set, wherein the suspension cage and the balance weight vertically run, the first guiding wheel set, the second guiding wheel set and the third guiding wheel set are all installed on the hoistway top beam;

the elevator car further comprises a fourth guide wheel set arranged at the lower part of the hoistway, the fourth guide wheel set is arranged below the counterweight, the upper wheel set comprises a plurality of upper wheels, the lower wheel set comprises a plurality of lower wheels, the third guide wheel set comprises at least one third guide wheel, and the fourth guide wheel set comprises at least one fourth guide wheel;

the elevator car further comprises a first traction cable, a second traction cable, a first coded disc and a second coded disc, wherein the first coded disc is fixed on the cage, and the second coded disc is positioned on one side of the counterweight and fixed in or out of the hoistway; the first code disc and the second code disc can be used for manually or automatically winding and unwinding ropes;

one end of the first traction cable is fixed relative to the suspension cage and is connected with the first coded disc, and the other end of the first traction cable upwards bypasses the first guide wheel set and then is downwards connected with the balance weight; one end of the second traction rope is relatively fixed below the hoistway and connected with the second yard disc, the other end of the second traction rope is wound on a lower wheel of the counterweight, then the second traction rope bypasses the fourth guide wheel and the rest lower wheel of the counterweight, then bypasses the traction machine, is wound on the second guide wheel group upwards, is wound on an upper wheel of the counterweight downwards, and is fixed with the hoistway beam through a rope head assembly, and the rope head assembly is provided with a traction rope tension adjusting device, so that vibration in the operation process is effectively absorbed.

According to the elevator dragging equipment, the winding method higher than 2:1, such as 4:1 winding method, can be realized by arranging the third guide wheel set and the fourth guide wheel set, the energy consumption and the system load borne by the main shaft bearing of the tractor can be further reduced, and the service life of the elevator dragging equipment is prolonged.

The utility model has the advantages that: the hoisting cage is driven to run up and down by adopting an indirect driving mode, namely the tractor directly drags the counterweight to move through the second traction cable, and the rope winding scheme reduces the cycle times and the number of the traction cables, reduces the reactive loss caused by the quality of a traction cable system and improves the running efficiency through the combination of two sections of traction cables; the traction cable on the counterweight adopts 2:1 or 4:1, so that the energy consumption and the system load borne by a main shaft bearing of the traction machine are effectively reduced, and the service life of the traction machine is prolonged; the vibration and noise of the tractor are filtered by the balance weight and the traction rope, and only a small part of the vibration and noise is transmitted to the suspension cage, so that the riding comfort is improved; the traction machine is positioned on one side of the counterweight, can be fixed on the top, the bottom, the wall surface or the outside of the hoistway and other installation modes, and occupies a smaller hoistway area; the counter weight is equipped with locking mechanism, and when the sky beam mechanism jack-up, be used for the spacing of counter weight, reduce the risk that the cage shifted, also reduce the system weight of jack-up.

Description of the drawings:

FIG. 1 is a schematic view of an elevator traction apparatus having only one upper wheel and one lower wheel according to embodiment 1;

FIG. 2 is a schematic view of the elevator traction apparatus of embodiment 1 without the compensating rope;

fig. 3 is a schematic diagram of an elevator traction apparatus having a plurality of upper wheels and a plurality of lower wheels according to embodiment 2;

fig. 4 is a schematic diagram of an elevator driving apparatus according to embodiment 3.

The figures are numbered:

1. a suspension cage; 2. balancing weight; 3. a traction machine; 4. a hoistway top beam; 5. a first guide wheel set; 6. a second guide wheel set; 7. an upper wheel set; 8. a lower wheel set; 9. a first traction cable; 10. a second traction cable; 11. a first code wheel; 12. a second code wheel; 13. a compensating cable; 14. a turning wheel; 15. a first guide wheel; 16. a second guide wheel; 17. an upper wheel; 18. a lower wheel; 19. a third guide wheel set; 20. a fourth guide wheel set; 21. a locking mechanism; 22. a water accumulation monitoring device; 23. a first traction cable breakage overload protection device; 24. a pressure detection protection device; 25. a buffer; 26. a traction cable extended fracture protection device; 27. a camera; 28. jacking limiting devices; 29. a guide mechanism; 30. a control system; 31. a mechanical energy storage device.

The specific implementation mode is as follows:

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

The application discloses a method for dragging an elevator, wherein a rope winding mode is divided into two sections: the cage and the balance weight are connected together through a first traction cable, the traction machine and the balance weight are connected through a second traction cable, and the cage is indirectly driven to move by driving the balance weight to move through the traction machine; the second traction rope adopts a rope winding ratio of 2:1 or 4:1 so as to improve the comprehensive operation efficiency. The following three examples are specific.

Example 1

As shown in fig. 1, an elevator dragging device comprises a cage 1, a counterweight 2, a guiding mechanism 29 for up-and-down movement of the cage and the counterweight, a tractor 3, and a first guiding wheel set 5 and a second guiding wheel set 6 which are both installed on a hoistway top beam 4, wherein the cage 1 and the counterweight 2 are positioned in a hoistway; the traction machine 3 is positioned at one side of the counterweight 2, the traction machine 3 can be fixed at the top, the bottom, the wall surface or the outside of the hoistway, a control system 30 of the traction machine 3 comprises an energy feedback device, the traction machine 3 comprises a mechanical energy storage device 31, the traction machine is in a permanent magnet synchronous gearless or three-phase asynchronous gear type, the upper end of the counterweight 2 is provided with an upper wheel set 7, the lower end of the counterweight 2 is provided with a lower wheel set 8, the counterweight 2 is provided with a locking mechanism 21, and the hoistway top beam 4 is used for limiting the counterweight 2 during jacking;

the elevator car further comprises a first traction cable 9, a second traction cable 10, a first coded disc 11 and a second coded disc 12, wherein the first coded disc 11 is fixed on the cage 1, the second coded disc 12 is positioned at the bottom of the hoistway and fixed in or out of the hoistway, and the first coded disc 11 and the second coded disc 12 can be used for manually or automatically winding and unwinding ropes;

one end of a first traction cable 9 is fixed relative to the suspension cage 1 and is connected with the first coded disc 11, and the other end of the first traction cable 9 upwards bypasses the first guide wheel set 5 and then is downwards connected with the balance weight 2; one end of a second traction rope 10 is fixed relatively below the shaft and connected with a second yard disc 12, the other end of the second traction rope upwards winds around a lower wheel set 8 of the counterweight 2 and then winds on the traction machine 3, then winds on a second guide wheel set 6 upwards and then winds on an upper wheel set 7 of the counterweight 2 downwards, and finally upwards is fixed with the shaft top beam 4 through a rope end combination.

The traction cable can be of a friction transmission pair material structure such as a steel wire rope, a steel belt or a plastic-coated steel wire rope. In actual use, the traction machine 3 is a permanent magnet synchronous gearless traction machine 3. The code wheel of this application is used for depositing the surplus that corresponds the haulage cable, and when the high gradual increase of building body, can be through the haulage cable surplus of depositing in the release code wheel, constantly adjust the length of haulage cable and guiding mechanism's length.

The elevator is located in a hoistway of a building, so that the influence of outdoor weather reasons on construction progress is avoided; this example illustrates how the hoisting machine 3 is installed underneath, which reduces the amount of work of transporting the hoisting machine 3 and the control system caused by frequent lifting of the equipment; the hoisting cage adopts indirect drive, namely a tractor 3 directly drags a balance weight 2 to move through a second traction cable 10, so that the hoisting cage 1 is driven to run up and down, the rope winding scheme reduces the cycle times and the number of the traction cables, reduces the reactive loss caused by the quality of a traction cable system and improves the running efficiency through the combination of two traction cables; the traction cable on the counterweight 2 adopts a ratio of 2:1, so that the energy consumption and the system load borne by a main shaft bearing of the traction machine 3 are effectively reduced, and the service life of the traction machine is prolonged; the vibration and noise of the tractor 3 are filtered by the balance weight 2 and the traction rope, and only a small part of the vibration and noise is transmitted to the suspension cage 1, so that the riding comfort is improved; the traction machine 3 is positioned on one side of the counterweight 2, can be fixed on the top, the bottom, the wall surface or the outside of the shaft and other installation modes, and occupies smaller shaft area; counter weight 2 is equipped with locking mechanism 21, and when the sky beam mechanism jack-up, be used for counter weight 2 spacing, reduce the risk that cage 1 shifted, also reduce the system weight of jack-up.

In practical use, the first guide wheel group 5 includes one or more first guide wheels 15, and in this embodiment, there are two first guide wheels 15; the second guide wheel set 6 comprises one or more second guide wheels 16, in this embodiment one second guide wheel 16.

As shown in fig. 1, the device further comprises a compensation cable 13, wherein one end of the compensation cable 13 is connected with the lower end of the suspension cage 1, and the other end is connected with the counterweight 2. When the lifting height is high, the weight of the traction cable can be compensated through the compensation chain. In practice, when the lifting height is not too high, the compensating rope may not be provided, as shown in fig. 2.

As shown in fig. 1, in this embodiment, the elevator car further includes a direction-changing wheel 14 located at a lower portion of the hoistway, and one end of the second traction cable 10 is connected to the second yard disc 12 after passing through the direction-changing wheel 14.

As shown in fig. 1, in this embodiment, the system further includes a water accumulation monitoring device 22 disposed at the bottom of the hoistway, the cage 1 is provided with a first traction cable fracture overload protection device 23, and the second traction cable 10 is provided with a pressure detection protection device 24; the device also comprises a buffer 25 matched with the counterweight 2, and a traction cable extended fracture protection device 26 is arranged on the buffer 25;

the camera 27 of the Internet of things module is arranged in the cage 1, the door of the cage 1 is provided with a self-locking mechanism, an electrical switch is verified after the door is closed in place to prevent the non-professional person in the cage 1 from misoperation, and the cage door is provided with a person clamping prevention protection device;

the cage 1 is provided with an overspeed protection device and is used for stopping the cage 1 in case of overspeed and limiting the cage 1 in case of jacking;

the end part of the hoistway top beam 4 is provided with a jacking limiting device 28 for reducing the work of jacking installation secondary alignment and preventing the top beam from tipping, and the jacking efficiency and accuracy are improved, wherein the jacking limiting device 28 is provided with an elastic adjusting device.

The accumulated water monitoring device 22, the first traction cable 9 fracture protection device, the extended fracture protection device 26 and the pressure detection device on the second traction cable 10 can improve the safety reliability of the equipment; the camera 27 is arranged, so that the running condition of the equipment can be monitored conveniently, and running data can be transmitted to the background server in real time; in practice, the doors of the cage 1 may be equipped with a special triangular key for the qualified professional to operate the device.

Example 2

As shown in fig. 3, the present embodiment is different from embodiment 1 in that both the upper wheel 17 and the lower wheel 18 are two.

Example 3

As shown in fig. 4, the present embodiment is different from embodiment 1 or 2 in that: the elevator car further comprises a third guide wheel set 19 and a fourth guide wheel set 20, wherein the third guide wheel set 19 is installed on the hoistway top beam 4, the fourth guide wheel set 20 is installed on the lower portion of the hoistway, the upper wheel set 7 comprises a plurality of upper wheels 17, the lower wheel set 8 comprises a plurality of lower wheels 18, the third guide wheel set 19 comprises at least one third guide wheel, and the fourth guide wheel set 20 comprises at least one fourth guide wheel; one end of a first traction cable 9 is fixed relative to the suspension cage 1 and is connected with the first coded disc 11, and the other end of the first traction cable 9 upwards bypasses the first guide wheel set 5 and then is downwards connected with the balance weight 2; one end of the second traction rope 10 is fixed relatively to the lower part of the well and is connected with the second yard disc 12, the other end of the second traction rope is wound on a lower wheel 18 of the counterweight 2, then the second traction rope bypasses a fourth guide wheel 20 and the rest lower wheels 18 of the counterweight 2, then the traction machine 3 is bypassed, then the second traction rope is wound on the second guide wheel group 6 upwards, then the second traction rope is wound on an upper wheel 17 of the counterweight 2 downwards, then the second traction rope bypasses a third guide wheel 19 and the rest upper wheels 17 of the counterweight 2, and finally the second traction rope is fixed with the well top beam 4 through a rope head combination, and the rope head combination is provided with a traction rope tension adjusting device and can effectively absorb vibration in the operation process.

According to the indirect dragging type hoistway lifter, the winding method higher than 2:1 can be realized by arranging the third guide wheel set 19 and the fourth guide wheel set 20, the energy consumption and the system load borne by the main shaft bearing of the tractor 3 can be further reduced, and the service life of the indirect dragging type hoistway lifter is prolonged. Specifically, in the present embodiment, there are two upper wheels 17 and two lower wheels 18, and there is one third guide wheel and one fourth guide wheel, so that a 4:1 winding method is implemented.

The above only is the preferred embodiment of the present invention, not therefore the limit the patent protection scope of the present invention, all applications the equivalent structure transformation made by the contents of the specification and the drawings of the present invention is directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. A lifter dragging device is characterized by comprising a suspension cage, a balance weight, a guide mechanism for the suspension cage and the balance weight to move up and down, a tractor, a first guide wheel set and a second guide wheel set, wherein the first guide wheel set and the second guide wheel set are both arranged on a hoistway top beam; the traction machine is positioned on one side of the counterweight, the traction machine can be fixed at the top, the bottom, the wall surface or the outside of the hoistway, a control system of the traction machine comprises an energy feedback device, the traction machine comprises a mechanical energy storage device, the traction machine is in a permanent magnet synchronous gearless or three-phase asynchronous gear form, an upper wheel set is installed at the upper end of the counterweight, a lower wheel set is installed at the lower end of the counterweight, a locking mechanism is arranged on the counterweight, and the traction machine is used for limiting the counterweight when the hoistway beam is jacked;

2. The elevator drive apparatus of claim 1 wherein the first guide wheel set comprises one or more first guide wheels, the second guide wheel set comprises one or more second guide wheels, the upper wheel set comprises one or more upper wheels, and the lower wheel set comprises one or more lower wheels.

3. The elevator drive apparatus of claim 1 further comprising a compensating cable having one end connected to the lower cage end and the other end connected to the counterweight.

4. The elevator traction apparatus as defined in claim 1, further comprising a direction-changing wheel located at a lower portion of the hoistway, wherein an end of the second traction rope is connected to the second pad through the direction-changing wheel.

5. The elevator dragging equipment according to claim 1, further comprising a water accumulation monitoring device arranged at the bottom of the well, wherein the cage is provided with a first traction cable breakage overload protection device, and the second traction cable is provided with a pressure detection protection device; the buffer is matched with the balance weight, and a traction cable extended fracture protection device is arranged on the buffer;

6. A kind of hoist drags the apparatus, characterized by, including cage, counter weight, cage and counter weight move up and down guiding mechanism, hauler and all install on the first guide wheelset, second guide wheelset and third guide wheelset on the overhead beam of well, said cage and counter weight are located in well, said hauler locates at one side of counter weight, can fix on top, bottom, wall or well outside of the well, the control system of the said hauler contains the energy feedback device, the hauler contains the mechanical energy storage apparatus, the hauler is synchronous gearless or three-phase asynchronous with the gear form forever, the upper end of the said counter weight is fitted with the upper wheelset, the lower end is fitted with the lower wheelset, there are locking mechanisms on the counter weight, the overhead beam of well is used for the spacing of the counter weight while lifting;

7. The elevator drive apparatus of claim 6 wherein the first guide wheel set comprises one or more first guide wheels, the second guide wheel set comprises one or more second guide wheels, the upper wheel set comprises one or more upper wheels, and the lower wheel set comprises one or more lower wheels.

8. The elevator traction apparatus as defined in claim 6, further comprising a direction-changing wheel located at a lower portion of the hoistway, wherein an end of the second traction cable is connected to the second pad through the direction-changing wheel.

9. An elevator drive apparatus according to claim 6, further comprising a compensating cable having one end connected to the lower end of the cage and the other end connected to the counterweight.

10. The elevator dragging equipment according to claim 6, further comprising a water accumulation monitoring device arranged at the bottom of the well, wherein the cage is provided with a first traction cable breakage overload protection device, and the second traction cable is provided with a pressure detection protection device; the buffer is matched with the balance weight, and a traction cable extended fracture protection device is arranged on the buffer;