阅读说明：本技术 升降机的绕绳方法以及升降机 (Rope winding method for elevator and elevator ) 是由 彭忠良 赵安莉 于 2021-06-11 设计创作，主要内容包括：本申请公开了升降机的绕绳方法以及升降机,吊笼和配重均位于井道内,井道上方具有天梁,天梁上设置第一导向轮组,吊笼和配重通过绕设在第一导向轮组的牵引索悬挂在天梁的下方；井道底部设置第二导向轮组,吊笼和配重还通过绕设在第二导向轮组的补偿索联动；曳引机设置在天梁、井道底部或底层井道外部,所述补偿索绕设在曳引机的曳引轮上,曳引机通过驱动补偿索移动带动吊笼和配重上下交互移动。本申请吊笼和配重均位于井道内,施工进度不受外部环境的影响,可以在井道内一直使用。本申请使用了牵引索和补偿索,并通过曳引机驱动补偿索进行驱动,能够有效减少能耗,降低曳引机主轴轴承的系统载荷,提高其寿命。(The application discloses a rope winding method of a lifter and the lifter, wherein a suspension cage and a balance weight are both positioned in a well, a top beam is arranged above the well, a first guide wheel set is arranged on the top beam, and the suspension cage and the balance weight are suspended below the top beam through a traction rope wound on the first guide wheel set; the bottom of the shaft is provided with a second guide wheel set, and the suspension cage and the balance weight are linked through a compensation cable wound on the second guide wheel set; the traction machine is arranged at the top beam, the bottom of the well or the outside of the bottom well, the compensation rope is wound on a traction wheel of the traction machine, and the traction machine drives the suspension cage and the balance weight to move up and down in an interactive mode by driving the compensation rope to move. This application cage and counter weight all are located the well, and the construction progress does not receive external environment's influence, can use in the well all the time. The traction cable and the compensation cable are used, the traction cable and the compensation cable are driven by the traction machine to drive the compensation cable, energy consumption can be effectively reduced, system load of a main shaft bearing of the traction machine is reduced, and the service life of the traction machine is prolonged.)

1. A rope winding method of an elevator is characterized in that a suspension cage and a balance weight are both positioned in a hoistway, a top beam is arranged above the hoistway, a first guide wheel set is arranged on the top beam, and the suspension cage and the balance weight are suspended below the top beam through a traction rope wound on the first guide wheel set;

the bottom of the shaft is provided with a second guide wheel set, and the suspension cage and the balance weight are linked through a compensation cable wound on the second guide wheel set;

the traction machine is arranged at the top beam, the bottom of the well or the outside of the bottom well, the compensation rope is wound on a traction wheel of the traction machine, and the traction machine drives the suspension cage and the balance weight to move up and down in an interactive way by driving the compensation rope to move;

the coating angle of the compensating rope on the traction sheave of the traction machine is changed by adjusting the mounting position of the second guide wheel set, so that the traction capacity of the traction machine is changed;

one end of the compensating rope is provided with a tensioning device and a code disc, and the other end of the compensating rope is provided with a tension adjusting device to ensure traction transmission;

the traction cable and the compensation cable are steel wire ropes, steel belts or plastic-coated steel wire ropes; the rope winding ratio of the traction rope is 1:1, 2:1 or 4:1, and the rope winding ratio of the compensation rope is 1:1, 2:1 or 4: 1;

the traction machine is a synchronous gearless or asynchronous geared traction machine.

2. The rope winding method of an elevator according to claim 1, wherein a first upper wheel set is provided at an upper end of the cage, a second upper wheel set is provided at the counterweight, one end of the traction rope passes through the locking device and then is fixed to the top beam, the other end of the traction rope passes through the first upper wheel set downward and then passes through the first guide wheel set upward, and then passes through the second upper wheel set upward and then is fixed to the top beam, a first code wheel is connected to a terminal of one end of the traction rope, and an overload protection device is further provided at one end of the traction rope.

3. The rope winding method of an elevator according to claim 1, wherein one end of the traction rope is fixed to the upper end of the cage, and the other end of the traction rope passes upward through the first guide wheel set and then is fixed to the counterweight, and a first code wheel is connected to the end of one end of the traction rope and fixed to the cage or the overhead beam; the coded disc of the compensation cable is a second coded disc, the allowance of the compensation cable is stored in the second coded disc, the fixed position of the first coded disc and the fixed position of the second coded disc are separately arranged, the weights are balanced, and the influence of extra loads on the traction system is reduced.

4. The roping method for an elevator according to claim 1, wherein a first lower sheave group is provided at a lower end of said cage, and a second lower sheave group is provided on said counterweight;

one end of the compensating rope is fixed relative to the well pit, and the other end of the compensating rope upwards bypasses the first lower wheel set, then downwards sequentially bypasses the first second guide wheel set, the traction wheel of the traction machine and the second guide wheel set, then upwards bypasses the second lower wheel set, and then downwards is fixed relative to the well pit;

the second yard disc is positioned outside the pit or the bottom well;

the positions of the guide wheels of the two groups of second guide wheel groups can be adjusted to change the coating angle of the compensating rope on the traction wheel and change the traction capacity;

and a tensioning device is arranged at the tail end of one end of the traction cable or on the second guide wheel set.

5. The rope winding method of an elevator according to claim 1, wherein a third guide wheel is further provided at the bottom of the hoistway, the second guide wheel sets are provided in two sets, one end of the compensating rope is fixed to the cage, the other end of the compensating rope passes downward around the third guide wheel, and then sequentially passes through the first set of second guide wheel set, the traction sheave of the traction machine, and the second set of second guide wheel sets, and then is fixed to the counterweight upward, the code wheel of the compensating rope is a second code wheel, the end of one end of the compensating rope passes through the locking device and then is stored in the second code wheel, and the second code wheel is separated from the first code wheel, so that the weight of the traction rope and the weight of the compensating rope are balanced with each other, and the influence of the extra load on the traction system is reduced;

and a tensioning device is arranged on the third guide wheel to tension the compensating cable so as to ensure traction transmission.

6. A lift is arranged in a hoistway and is characterized by comprising a movable working platform, a suspension cage, a balance weight, an overspeed braking device, a guide rail, a first guide wheel set, a second guide wheel set, a traction machine, a traction cable, a first code disc, a compensation cable, a second code disc and an electric control cabinet;

the movable working platform comprises a top beam, the top beam is telescopic, steel wire rope hoists are arranged at two ends of the top beam, telescopic protective guardrails are arranged around the movable working platform, jacking limiting devices are arranged at four corners of the movable working platform and comprise limiting device bodies and elastic rollers arranged on the limiting device bodies, when the elevator jacks, the jacking limiting devices are in an unfolded working state and are in real-time contact with a well wall through the rollers, and damage to equipment caused by deflection during jacking is prevented;

the lifting cage and the balance weight are suspended below the top beam through a traction cable wound on the first guide wheel set, the first coded disc is connected with one end of the traction cable, and the tail end of the traction cable is provided with an overload protection device;

the suspension cage and the balance weight are also linked through a compensation cable wound on a second guide wheel set, a second coded disc is connected with one end of the compensation cable, and the tail end of the compensation cable is provided with a tension adjusting device; the suspension cage and the balance weight are arranged into one group or a plurality of groups, and when the suspension cage and the balance weight are arranged into a plurality of groups, an adjustable connecting structure is adopted between two adjacent groups;

the traction machine is arranged at the bottom of the well or outside the bottom well, the compensating rope is wound on a traction wheel of the traction machine, and the traction machine drives the suspension cage and the balance weight to move up and down in an interactive manner by driving the compensating rope;

the elevator also comprises an overspeed braking device, the overspeed braking device comprises a speed monitoring device, a braking device, a speed-limiting rope guide wheel, a speed-limiting steel wire rope and a lifting linkage mechanism, the speed monitoring device is arranged on a pit or a guide rail of the pit of the well, the speed-limiting rope guide wheel is arranged on a movable workbench or a guide rail at the top of the well, and the lifting linkage mechanism is connected with the speed-limiting steel wire rope and the braking device and is fixed on the suspension cage or the counterweight;

the tail end of one end of the compensation cable is provided with a tensioning device, after the compensation cable passes through the tensioning device, the allowance of the compensation cable is stored on the second coded disc, or the compensation cable is provided with the tensioning device on the second guide wheel set, and the tensioning device tensions the compensation cable to ensure traction transmission.

7. The elevator as claimed in claim 6, wherein a first upper wheel set is provided at an upper end of the cage, a second upper wheel set is provided at the counterweight, one end of the traction cable passes through the locking device and then is fixed to the top beam, the other end of the traction cable passes through the first upper wheel set downwards and then passes through the first guide wheel set upwards, and then passes through the second upper wheel set downwards and then passes through the tension adjusting device upwards and then is fixed to the top beam, the tension adjusting device is provided at an end of at least one end of the traction cable and the compensating cable, and the tension adjusting device is provided at an end of one end of the compensating cable.

8. The elevator as claimed in claim 6, wherein one end of said drag cable is fixed to the upper end of the cage, and the other end of said drag cable is fixed to the counterweight after passing upward around the first guide pulley group, and the remaining amount of said drag cable is stored in a first code wheel which is placed on the cage or the counterweight.

9. The lift of claim 6, wherein a first lower wheel set is provided at a lower end of the cage and a second lower wheel set is provided on the counterweight;

the second guide wheel sets are two sets, one end of the compensating rope is relatively fixed to the well pit, the other end of the compensating rope upwards bypasses the first lower wheel set, downwards sequentially bypasses the first second guide wheel set, the traction wheel of the traction machine and the second guide wheel set, then upwards bypasses the second lower wheel set, and then downwards is relatively fixed to the well pit, the tail end of one end of the compensating rope is provided with a tensioning device, the balance of the compensating rope is stored on the second code disc, and the second code disc is placed outside the well pit or the well.

10. The elevator as claimed in claim 6, further comprising a third guide pulley provided at the bottom of the hoistway, wherein the second guide pulley sets are provided in two sets, one end of the compensating rope is fixed to the cage, and the other end of the compensating rope passes downward around the third guide pulley, sequentially passes through the first second guide pulley set, the traction sheave of the traction machine, and the second guide pulley set, and then passes upward and is fixed to the counterweight; the position of the guide wheel of the second guide wheel set can be adjusted to change the coating angle of the compensating rope on the traction wheel, so that the traction capacity of the traction machine is changed; the third guide wheel is provided with a tensioning device, and the allowance of the compensation cable is stored on the second coded disc and is fixed on the suspension cage or the balance weight.

Technical Field

The invention relates to the field of constructional engineering construction equipment, in particular to a rope winding method of an elevator and the elevator.

Background

The existing construction elevator is generally positioned outside a building, and runs up and down by depending on a cage of a standard section for guiding and supporting people or goods, the outdoor elevator is greatly influenced by weather, generally adopts a hoisting steel wire rope or a gear rack to directly drive, and the existing domestic construction elevator (SC type construction elevator) is basically a rack and pinion type construction elevator, has higher energy consumption and high running noise, and reduces the safety and reliability of the elevator in the weather of strong wind, rain and snow because the standard section is usually in flexible 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 pit mounting 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 construction hoist is large, and the influence on the service life of a bearing of the traction machine is large.

Disclosure of Invention

The present invention addresses the above-mentioned problems and overcomes at least one of the deficiencies and provides a method of roping an elevator and an elevator.

The technical scheme adopted by the invention is as follows:

a rope winding method of an elevator is characterized in that a suspension cage and a balance weight are both positioned in a well, a top beam is arranged above the well, a first guide wheel set is arranged on the top beam, and the suspension cage and the balance weight are suspended below the top beam through a traction rope wound on the first guide wheel set;

the bottom of the shaft is provided with a second guide wheel set, and the suspension cage and the balance weight are linked through a compensation cable wound on the second guide wheel set;

the traction machine is arranged at the top beam, the bottom of the well or the outside of the bottom well, the compensation rope is wound on a traction wheel of the traction machine, and the traction machine drives the suspension cage and the balance weight to move up and down in an interactive way by driving the compensation rope to move;

the coating angle of the compensating rope on the traction sheave of the traction machine is changed by adjusting the mounting position of the second guide wheel set, so that the traction capacity of the traction machine is changed;

one end of the compensating rope is provided with a tensioning device and a code disc, and the other end of the compensating rope is provided with a tension adjusting device to ensure traction transmission;

the traction cable and the compensation cable are steel wire ropes, steel belts or plastic-coated steel wire ropes and other traction media; the rope winding ratio of the traction rope is 1:1, 2:1 or 4:1, and the rope winding ratio of the compensation rope is 1:1, 2:1 or 4: 1;

the traction machine is a synchronous gearless or asynchronous geared traction machine.

Present outdoor lift will be demolishd after building body capping, and later stage fitment is hardly transported material, and cage and counter weight all are located the well in this application, and the construction progress does not receive external environment's influence, can use in the well always.

The traction cable and the compensation cable are used, the traction cable positioned above is respectively hung at two ends of the suspension cage and the counterweight, and the compensation cable positioned below is also connected with the suspension cage and the counterweight; this application adopts the compensation rope to drag, and hauler and control system all install in the bottom of pit or building, have effectively reduced the weight that the sky roof beam bore, reduce its load demand, reduce the work load of jacking operation at every turn simultaneously.

In one embodiment of the invention, a first upper wheel set is arranged at the upper end of the suspension cage, a second upper wheel set is arranged on the counterweight, one end of the traction cable passes through the locking device and then is fixed relative to the top beam, the other end of the traction cable downwards bypasses the first upper wheel set and then upwards bypasses the first guide wheel set, then downwards bypasses the second upper wheel set and then upwards passes through the tension adjusting device and then is fixed relative to the top beam, a first coded disc is connected to the tail end of one end of the traction cable, and an overload protection device is further arranged at one end of the traction cable.

In one embodiment of the invention, one end of the traction cable is fixed relative to the upper end of the suspension cage, the other end of the traction cable upwards bypasses the first guide wheel set and then downwards fixed relative to the counterweight, the tail end of one end of the traction cable is connected with a first coded disc, and the first coded disc is fixed on the suspension cage or the overhead beam; the coded disc of the compensation cable is a second coded disc, the allowance of the compensation cable is stored in the second coded disc, the fixed position of the first coded disc and the fixed position of the second coded disc are separately arranged, the weights are balanced, and the influence of extra loads on the traction system is reduced.

In one embodiment of the present invention, a first lower wheel set is disposed at a lower end of the suspension cage, and a second lower wheel set is disposed on the counterweight;

one end of the compensating rope is fixed relative to the well pit, and the other end of the compensating rope upwards bypasses the first lower wheel set, then downwards sequentially bypasses the first second guide wheel set, the traction wheel of the traction machine and the second guide wheel set, then upwards bypasses the second lower wheel set, and then downwards is fixed relative to the well pit;

the second yard disc is positioned outside the pit or the bottom well;

the positions of the guide wheels of the two groups of second guide wheel groups can be adjusted to change the coating angle of the compensating rope on the traction wheel and change the traction capacity;

and a tensioning device is arranged at the tail end of one end of the traction cable or on the second guide wheel set.

In one embodiment of the invention, the bottom of the hoistway is further provided with three guide wheels, two groups of second guide wheel sets are provided, one end of the compensating rope is fixed relative to the suspension cage, the other end of the compensating rope bypasses the third guide wheel downwards, then sequentially bypasses the first group of second guide wheel sets, the traction wheel of the traction machine and the second group of second guide wheel sets, and then upwards is fixed relative to the counterweight, the coded disc of the compensating rope is a second coded disc, the tail end of one end of the compensating rope passes through the locking device and then is stored in the second coded disc, and the second coded disc and the first coded disc are separately arranged, so that the weights of the traction rope and the balance of the compensating rope are balanced with each other, and the influence of extra load on the traction system is reduced;

and a tensioning device is arranged on the third guide wheel to tension the compensating cable so as to ensure traction transmission.

The application also discloses a lifter which is arranged in a hoistway and comprises a movable working platform, a suspension cage, a balance weight, an overspeed braking device, a guide rail, a first guide wheel set, a second guide wheel set, a traction machine, a traction cable, a first code disc, a compensation cable, a second code disc and an electric control cabinet;

the movable type working platform comprises a top beam, the top beam is telescopic, steel wire rope hoists are arranged at two ends of the top beam, telescopic protective guardrails are arranged on the periphery of the movable type working platform, jacking limiting devices are arranged at four corners of the movable type working platform, each jacking limiting device comprises a limiting device body and an elastic roller arranged on the limiting device body, and when the elevator jacks, the jacking limiting devices are in an unfolded working state and are in real-time contact with a well wall through the rollers, so that the equipment is prevented from being damaged by deflection during jacking;

the lifting cage and the balance weight are suspended below the top beam through a traction cable wound on the first guide wheel set, the first coded disc is connected with one end of the traction cable, and the tail end of the traction cable is provided with an overload protection device;

the suspension cage and the balance weight are also linked through a compensation cable wound on a second guide wheel set, a second coded disc is connected with one end of the compensation cable, and the tail end of the compensation cable is provided with a tension adjusting device; the suspension cage and the balance weight are arranged into one group or a plurality of groups, and when the suspension cage and the balance weight are arranged into a plurality of groups, an adjustable connecting structure is adopted between two adjacent groups;

the traction machine is arranged at the bottom of the well or outside the bottom well, the compensation rope is wound on a traction wheel of the traction machine, and the traction machine drives the suspension cage and the balance weight to move up and down in an interactive mode by driving the compensation rope to move.

The elevator also comprises an overspeed braking device, the overspeed braking device comprises a speed monitoring device, a braking device, a speed-limiting rope guide wheel, a speed-limiting steel wire rope and a lifting linkage mechanism, the speed monitoring device is arranged on a pit or a guide rail of the pit of the well, the speed-limiting rope guide wheel is arranged on a movable workbench or a guide rail at the top of the well, and the lifting linkage mechanism is connected with the speed-limiting steel wire rope and the braking device and is fixed on the suspension cage or the counterweight;

the tail end of one end of the compensation cable is provided with a tensioning device, after the compensation cable passes through the tensioning device, the allowance of the compensation cable is stored on the second coded disc, or the compensation cable is provided with the tensioning device on the second guide wheel set, and the tensioning device tensions the compensation cable to ensure traction transmission.

This application cage and counter weight all are located the well, and the construction progress does not receive external environment's influence, can use in the well all the time. The traction cable and the compensation cable are used, the traction cable positioned above is respectively hung at two ends of the suspension cage and the counterweight, and the compensation cable positioned below is also connected with the suspension cage and the counterweight; this application adopts the compensation rope to drag, and hauler and control system all install in the bottom of pit or building, have effectively reduced the weight that the sky roof beam bore, reduce its load demand, reduce the work load of jacking operation at every turn simultaneously.

In one embodiment of the invention, a first upper wheel set is arranged at the upper end of the suspension cage, a second upper wheel set is arranged on the counterweight, one end of the traction cable passes through the locking device and then is fixed relative to the top beam, the other end of the traction cable downwards bypasses the first upper wheel set and then upwards bypasses the first guide wheel set, then downwards bypasses the second upper wheel set and then upwards passes through the tension adjusting device and then is fixed relative to the top beam, the tail ends of at least one end of the traction cable and the compensating cable are provided with the tension adjusting device, and the tail end of one end of the compensating cable is provided with the tension device.

In one embodiment of the invention, one end of the traction cable is fixed relative to the upper end of the cage, the other end of the traction cable upwards bypasses the first guide wheel set and then downwards fixed relative to the counterweight, the allowance of the traction cable is stored on the first coded disc, and the first coded disc is placed on the cage or the counterweight.

In one embodiment of the present invention, a first lower wheel set is disposed at a lower end of the suspension cage, and a second lower wheel set is disposed on the counterweight;

the second guide wheel sets are two sets, one end of the compensating rope is relatively fixed to the well pit, the other end of the compensating rope upwards bypasses the first lower wheel set, downwards sequentially bypasses the first second guide wheel set, the traction wheel of the traction machine and the second guide wheel set, then upwards bypasses the second lower wheel set, and then downwards is relatively fixed to the well pit, the tail end of one end of the compensating rope is provided with a tensioning device, the balance of the compensating rope is stored on the second code disc, and the second code disc is placed outside the well pit or the well.

When the compensation rope is actually used, the wrapping angle of the compensation rope on the traction sheave can be adjusted by adjusting the vertical distance between the two groups of second guide wheel sets.

In one embodiment of the invention, the elevator further comprises third guide wheels arranged at the bottom of the hoistway, two groups of second guide wheel sets are provided, one end of the compensation rope is fixed relative to the suspension cage, and the other end of the compensation rope sequentially bypasses the first group of second guide wheel sets, the traction wheel of the traction machine and the second group of second guide wheel sets after downwards bypassing the third guide wheels and then upwards is fixed relative to the counterweight; the position of the guide wheel of the second guide wheel set can be adjusted to change the coating angle of the compensating rope on the traction wheel, so that the traction capacity of the traction machine is changed; the third guide wheel is provided with a tensioning device, and the allowance of the compensation cable is stored on the second coded disc and is fixed on the suspension cage or the balance weight.

The invention has the beneficial effects that: this application cage and counter weight all are located the well, and the construction progress does not receive external environment's influence, can use in the well all the time. The traction cable and the compensation cable are used, the traction cable positioned above is respectively hung at two ends of the suspension cage and the counterweight, and the compensation cable positioned below is also connected with the suspension cage and the counterweight; this application adopts the compensation rope to drag, and hauler and control system all install in the bottom of pit or building, have effectively reduced the weight that the sky roof beam bore, reduce its load demand, reduce the work load of jacking operation at every turn simultaneously.

Description of the drawings:

FIG. 1 is a first roping arrangement for an elevator;

FIG. 2 is a second roping arrangement for the elevator;

FIG. 3 is a third roping arrangement for the elevator;

FIG. 4 is a fourth roping arrangement for the elevator;

FIG. 5 is a schematic view of a mobile work platform;

FIG. 6 is a schematic view of an overspeed braking apparatus of embodiment 2;

FIG. 7 is a schematic view of a speed monitoring device;

FIG. 8 is a schematic view of a lifting linkage;

fig. 9 is a schematic diagram of a governor assembly and an appliance switch;

fig. 10 is a schematic view of another angle of the governor assembly and appliance switch.

The figures are numbered:

1. a hoistway; 2. a top beam; 3. a suspension cage; 4. balancing weight; 5. a first guide wheel set; 6. a traction cable; 7. a second guide wheel set; 8. a compensating cable; 9. a traction machine; 10. a first code wheel; 11. a second code wheel; 12. a first upper wheel set; 13. a second upper wheel set; 14. a first lower wheel set; 15. a second lower wheel set; 16. a third guide wheel; 18. a speed-limiting steel wire rope; 20. a speed limiting rope guide wheel; 21. a speed monitoring device; 22. a stopping device; 23. a lifting linkage mechanism; 24. a hoist; 25. protecting the guard rail; 26. jacking limiting devices; 27. a limiting device body; 28. a roller; 1a, a guide rail; 2a, a pit; 3a, hanging a cage; 4a, a speed monitoring device; 5a, a speed-limiting rope guide wheel; 6a, a lifting linkage mechanism; 7a, a speed-limiting steel wire rope; 8a, a stopping device; 9a, a rotating shaft; 10a, a swing arm; 11a, a lifting arm; 12a, placing a chicken heart ring; 13a, placing a chicken heart ring; 14a, a rope clamp; 15a, a rotating member; 16a, a connecting rod assembly; 17a, splitting rods; 18a, a pressure spring; 19a, a base; 20a, a guide rod; 21a, a movable frame; 22a, a governor assembly; 23a, a balancing weight; 24a, an electrical switch; 25a, an extension limit switch; 26a, an electrical verification switch; 28a, a rope wheel; 29a, a rope clamp; 30a, a ratchet mechanism; 31a, throwing blocks; 32a, a connecting rod; 33a, a return spring; 34a, a swing rod switch; 35a and a swing rod.

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, 2, 3 and 4, in a rope winding method of an elevator, a cage 3 and a counterweight 4 are both positioned in a hoistway 1, a top beam 2 is arranged above the hoistway 1, a first guide wheel set 5 is arranged on the top beam 2, and the cage 3 and the counterweight 4 are suspended below the top beam 2 through a traction rope 6 wound on the first guide wheel set 5;

the bottom of the well 1 is provided with a second guide wheel set 7, and the suspension cage 3 and the counterweight 4 are also linked through a compensating rope 8 wound on the second guide wheel set 7;

the traction machine 9 is arranged at the top beam, the bottom of the well or the outside of the bottom well, the compensating rope 8 is wound on a traction wheel of the traction machine 9, and the traction machine 9 drives the suspension cage 3 and the balance weight 4 to move up and down alternately by driving the compensating rope 8.

The coating angle of the compensating rope on the traction sheave of the traction machine is changed by adjusting the installation position of the second guide wheel set, so that the traction capacity of the traction machine is changed.

One end of the compensating rope is provided with a tensioning device and a code disc, and the other end of the compensating rope is provided with a tension adjusting device to ensure traction transmission;

the traction rope and the compensation rope are traction media such as steel wire ropes, steel belts or plastic-coated steel wire ropes, and the like, and when the traction rope and the compensation rope are actually used, the rope winding ratio of the traction rope is 1:1, 2:1 or 4:1, and the rope winding ratio of the compensation rope is 1:1, 2:1 or 4: 1;

the traction machine is a synchronous gearless or asynchronous geared traction machine.

Present outdoor lift will be demolishd after building body capping, and later stage fitment is hardly transported material, and cage 3 and counter weight 4 all are located well 1 in this application, and the construction progress does not receive external environment's influence, can use in well 1 always.

The traction cable 6 and the compensation cable 8 are used, the traction cable 6 positioned above is respectively hung at two ends of the suspension cage 3 and the counterweight 4, and the compensation cable 8 positioned below is also connected with the suspension cage 3 and the counterweight 4; this application adopts the compensation rope to drag, and hauler 9 and control system thereof all install in the bottom of pit or building, have effectively reduced the weight that the roof beam 2 bore, reduce its load demand, reduce the work load of jacking operation at every turn simultaneously.

As shown in fig. 1 and 2, in one embodiment of the present invention, a first upper wheel set 12 is disposed at the upper end of the suspension cage 3, a second upper wheel set 13 is disposed at the counterweight 4, one end of the traction cable 6 passes through the locking device and then is fixed relative to the top beam 2, the other end of the traction cable passes through the first upper wheel set 12 downwards and then passes through the first guide wheel set 5 upwards, and then passes through the second upper wheel set 13 downwards and then is fixed relative to the top beam 2, a tension adjusting device passes through the tension adjusting device upwards and then is fixed relative to the top beam, a first code wheel 10 is connected to the end of one end of the traction cable 6, and an overload protection device is further disposed at one end of the traction cable 6.

As shown in fig. 3 and 4, in one embodiment of the present invention, one end of the traction cable 6 is fixed opposite to the upper end of the cage 3, and the other end of the traction cable passes upward around the first guide wheel set 5 and then is fixed opposite to the counterweight 4, the tail end of one end of the traction cable 6 is connected with a first coded disc 10, and the first coded disc 10 is fixed on the cage 3 or the overhead beam; the coded disc of the compensation cable is a second coded disc, the allowance of the compensation cable is stored in the second coded disc, the fixed position of the first coded disc and the fixed position of the second coded disc are separately arranged, and the weights are balanced with each other, so that the influence of the extra self weight on the traction system is reduced.

As shown in fig. 1, 2 and 3, in one embodiment of the present invention, a first lower wheel set 14 is disposed at the lower end of the suspension cage 3, and a second lower wheel set 15 is disposed on the counterweight 4;

two groups of second guide wheel sets 7 are provided, one end of the compensating rope 8 is relatively fixed with the pit of the well 1, and the other end of the compensating rope sequentially bypasses the first lower wheel set 14 upwards, downwards and sequentially bypasses the first group of second guide wheel sets 7, the traction wheel of the traction machine 9 and the second group of second guide wheel sets 7, then bypasses the second lower wheel set 15 upwards, and is relatively fixed with the pit of the well 1 downwards;

the second code wheel 11 is located outside the pit or the bottom shaft.

The positions of the guide wheels of the two groups of second guide wheel groups can be adjusted to change the coating angle of the compensating rope on the traction wheel and change the traction capacity;

and a tensioning device is arranged at the tail end of one end of the traction cable or on the second guide wheel set.

As shown in fig. 1, 2 and 3, the compensating rope 8 sequentially winds around the first set of second guide wheel group 7, the traction sheave of the traction machine 9 and the second set of second guide wheel group 7 in two ways, and the wrapping angle of the compensating rope 8 on the traction sheave can be adjusted by adjusting the vertical distance between the two sets of second guide wheel groups 7.

As shown in fig. 4, in one embodiment of the present invention, the bottom of the hoistway 1 is further provided with a third guide pulley 16, two sets of second guide pulley sets 7 are provided, one end of the compensating rope 8 is fixed opposite to the cage 3, the other end of the compensating rope downwardly bypasses the third guide pulley 16, then sequentially bypasses the first set of second guide pulley set 7, the traction sheave of the traction machine 9 and the second set of second guide pulley set 7, and then upwardly is fixed opposite to the counterweight 4, the code wheel of the compensating rope 8 is a second code wheel 11, and the tail end of one end of the compensating rope 8 passes through the locking device and is stored in the second code wheel 11 with a margin. The second code disc 11 and the first code disc 10 are separately arranged, so that the weights of the residual amounts of the traction cable and the compensation cable are balanced, and the influence of extra load on a traction system is reduced;

and a tensioning device is arranged on the third guide wheel to tension the compensation cable so as to ensure traction transmission.

As shown in fig. 1, 2, 3 and 4, the present application further discloses an elevator, which is arranged in a hoistway 1 and comprises a movable working platform, a suspension cage 3, a counterweight 4, an overspeed braking device, a guide rail, a first guide wheel set 5, a second guide wheel set 7, a traction machine 9, a traction cable 6, a first coded disc 10, a compensation cable 8, a second coded disc 11 and an electric control cabinet;

as shown in fig. 1 to 5, the movable working platform includes a top beam 2, the top beam 2 is telescopic, two ends of the top beam 2 are provided with a steel wire rope hoist 24, telescopic protective guardrails 25 are arranged around the movable working platform, four corners of the movable working platform are provided with jacking limiting devices 26, each jacking limiting device 26 comprises a limiting device body 27 and an elastic roller 28 mounted on the limiting device body 27, when the elevator jacks, the jacking limiting devices 26 are in an expanded working state, and the rollers 28 are in real-time contact with a hoistway wall, so as to prevent the equipment from being damaged by deflection during jacking;

the lifting cage 3 and the balance weight 4 are suspended below the top beam 2 through a traction cable 6 wound on the first guide wheel set 5, the first coded disc 10 is connected with one end of the traction cable 6, and the tail end of the traction cable is provided with an overload protection device;

the suspension cage 3 and the balance weight 4 are also linked through a compensation cable 8 wound on a second guide wheel set 7, a second wharf plate 11 is connected with one end of the compensation cable 8, and the tail end of the compensation cable is provided with a tension adjusting device; the suspension cage and the balance weight are arranged into one group or a plurality of groups, and when the groups are a plurality of groups, an adjustable connecting structure is adopted between two adjacent groups;

the traction machine 9 is arranged at the bottom of the well or outside the bottom well, the compensating rope 8 is wound on a traction wheel of the traction machine 9, and the traction machine 9 drives the cage 3 and the balance weight 4 to move up and down alternately by driving the compensating rope 8 to move;

the elevator also comprises an overspeed braking device, the overspeed braking device comprises a speed monitoring device, a braking device, a speed-limiting rope guide wheel, a speed-limiting steel wire rope and a lifting linkage mechanism, the speed monitoring device is arranged on a pit or a guide rail of the pit of the well, the speed-limiting rope guide wheel is arranged on a movable workbench or a guide rail at the top of the well, and the lifting linkage mechanism is connected with the speed-limiting steel wire rope and the braking device and is fixed on the suspension cage or the counterweight;

the tail end of one end of the compensation cable is provided with a tensioning device, after the compensation cable passes through the tensioning device, the allowance of the compensation cable is stored on the second coded disc, or the compensation cable is provided with the tensioning device on the second guide wheel set, and the tensioning device tensions the compensation cable to ensure traction transmission.

This application cage 3 and counter weight 4 all are located well 1, and the construction progress does not receive external environment's influence, can use in well 1 always. The traction cable 6 and the compensation cable 8 are used, the traction cable 6 positioned above is respectively hung at two ends of the suspension cage 3 and the counterweight 4, and the compensation cable 8 positioned below is also connected with the suspension cage 3 and the counterweight 4; this application adopts the compensation rope to drag, and hauler 9 and control system thereof all install in the bottom of pit or building, have effectively reduced the weight that the roof beam 2 bore, reduce its load demand, reduce the work load of jacking operation at every turn simultaneously.

As shown in fig. 1 and 2, in one embodiment of the present invention, a first upper wheel set 12 is disposed at the upper end of the suspension cage 3, a second upper wheel set 13 is disposed on the counterweight 4, one end of the traction cable 6 passes through the locking device and then is fixed relative to the top beam 2, the other end of the traction cable passes through the first upper wheel set 12 downwards and then passes through the first guide wheel set 5 upwards, and then passes through the second upper wheel set 13 downwards and then is fixed relative to the top beam 2, the tail ends of at least one end of the traction cable and the compensation cable are disposed with a tension adjusting device, and the tail end of one end of the compensation cable is disposed with a tension device.

As shown in fig. 3 and 4, in one embodiment of the present invention, one end of the traction cable 6 is fixed opposite to the upper end of the cage 3, and the other end thereof passes upward around the first guide wheel set 5 and then is fixed opposite to the counterweight 4, and the remaining amount of the traction cable is stored on the first code wheel which is placed on the cage or the counterweight.

As shown in fig. 1, 2 and 3, in one embodiment of the present invention, a first lower wheel set 14 is disposed at the lower end of the cage 3, and a second lower wheel set 15 is disposed on the counterweight 4;

two groups of second guide wheel sets 7 are provided, one end of the compensating rope 8 is relatively fixed with the pit of the well 1, the other end of the compensating rope upwards bypasses the first lower wheel set 14, then downwards sequentially bypasses the first group of second guide wheel sets 7, the traction wheel of the traction machine 9 and the second group of second guide wheel sets 7, then upwards bypasses the second lower wheel set 15, and then downwards is relatively fixed with the pit of the well 1, the tail end of one end of the compensating rope is provided with a tensioning device, the allowance of the compensating rope is stored on the second code disc, and the second code disc is placed outside the pit of the well or the well.

As shown in fig. 4, in one embodiment of the present invention, the present invention further includes a third guide pulley 16 disposed at the bottom of the hoistway 1, the second guide pulley group 7 has two sets, one end of the compensating rope 8 is fixed to the suspension cage 3, and the other end of the compensating rope passes downward around the third guide pulley 16, then sequentially passes through the first set of second guide pulley group 7, the traction sheave of the traction machine 9, and the second set of second guide pulley group 7, and then is fixed to the counterweight 4 upward; the position of the guide wheel of the second guide wheel group can be adjusted to change the coating angle of the compensating rope on the traction wheel, thereby changing the traction capacity of the traction machine; the third guide wheel is provided with a tensioning device, and the allowance of the compensation cable is stored on the second coded disc and is fixed on the suspension cage or the balance weight.

In practical use, as shown in fig. 4, the first code disc is arranged on the suspension cage, the second code disc is fixed on the balance weight, and the weights are balanced by cross staggering, so that the influence of the extra self weight on the traction system is reduced.

Example 2

As shown in fig. 6 to 10, the embodiment discloses an overspeed braking device for an elevator, the elevator includes a guide rail 1a arranged on a side wall of a hoistway and a cage 3a capable of moving up and down, the overspeed braking device includes a speed monitoring device 4a, a speed-limiting rope guide wheel 5a, a lifting linkage mechanism 6a, a speed-limiting steel wire rope 7a and a braking device 8 a;

the speed monitoring device 4a is fixed on the pit 2a or on a guide rail 1a of the pit 2 a;

the speed-limiting rope guide wheel 5a is fixed on the guide rail 1a or the top beam at the top;

the braking device 8a is arranged on the suspension cage 3a and is matched with a guide rail 1a on the well;

the lifting linkage mechanism 6a is installed on the suspension cage 3a, the lifting linkage mechanism 6a comprises a rotating shaft 9a which is rotatably installed on the suspension cage 3a, a swing arm 10a connected with the braking device 8a is arranged on the rotating shaft 9a, a lifting arm 11a is also arranged on the rotating shaft 9a, the speed-limiting steel wire rope 7a is wound on the speed-limiting rope guide wheel 5a and a rope wheel 28a of the speed monitoring device 4a, and two ends of the speed-limiting steel wire rope 7a are connected with the lifting arm 11 a.

In actual use, the speed monitoring device 4a can be fixed on the guide rail 1a of the pit 2a through a bracket and a pressing plate, or a base 19a of the speed monitoring device is fixed on the ground of the pit 2a through an expansion screw; during actual application, the speed-limiting rope guide wheel 5a can be fixed on the guide rail 1a at the top through the support and the pressing plate, and the limiting block is fixed at the top of the support to prevent the speed-limiting rope guide wheel 5a from falling. In this embodiment, mounted on the cage 3a means mounted on the upper beam or the lower beam of the cage 3 a. The speed monitoring device 4a of the present application is a conventional speed monitoring device 4a, and the braking device 8a of the present application is a conventional braking device 8a (e.g., a brake caliper).

The working principle of the overspeed braking device is as follows: when the suspension cage 3a is over-speed, the speed monitoring device 4a works to clamp the speed-limiting steel wire rope 7a, and simultaneously sends a signal to the control cabinet to stop the suspension cage 3a, and due to the action of inertia force, the braking device 8a fixed on the suspension cage 3a continues to perform inertia operation, at the moment, the speed monitoring device 4a and the speed-limiting steel wire rope 7a are both in a stop state, under the action of the speed-limiting steel wire rope 7a, the lifting arm 11a drives the rotating shaft 9a and the swinging arm 10a to rotate, and the swinging arm 10a drives the wedge block of the braking device 8a to move to eliminate the gap between the wedge block and the guide surface of the guide rail 1a, so that the suspension cage 3a is braked on the guide rail 1 a. The speed limiting and braking device is mainly suitable for the construction elevator in the shaft, the speed limiting and braking device is separately arranged, and the installation, the overhaul and the reset operation are convenient. The installation position of the speed monitoring device 4a is close to the position of the electric control cabinet of the tractor, so that the length of a connecting cable is reduced.

As shown in fig. 6 and 8, in this embodiment, an upper heart ring 12a and a lower heart ring 13a are mounted on the lifting arm 11a, one end of the speed-limiting steel wire rope 7a is connected to the upper heart ring 12a, the other end of the speed-limiting steel wire rope 7a is connected to the lower heart ring 13a, and the rope end of the rope loop is tied and fixed to the body of the rope loop by the speed-limiting steel wire rope 7a through the rope clamp 14 a; the swing arm 10a is connected with a wedge block of the braking device 8a, the swing arm is assembled with the rotating shaft through a pin shaft, and the rotating angle of the swing arm on the rotating shaft can be adjusted;

the rotating shaft 9a is further fixed with a rotating part 15a, the lifting linkage mechanism 6a comprises two rotating shafts 9a and a connecting rod assembly 16a, two ends of the connecting rod assembly 16a are respectively in hinged fit with the rotating part 15a corresponding to the rotating shafts, and the connecting rod assembly 16a, the rotating parts 15a of the two rotating shafts and the suspension cage 3a (suspension cage frame) form a four-link mechanism:

the connecting rod assembly 16a comprises two branch rods 17a which are nested with each other, and a pressure spring 18a with adjustable compression amount is arranged between the two branch rods 17 a.

In the present embodiment, the speed monitoring device 4a includes:

a base 19a for fixing to the pit 2a or to the guide rail 1a of the pit 2 a;

a guide rod 20a fixed to the base 19 a;

a movable frame 21a which is slidably arranged on the guide rod 20a, and is provided with a speed limiter assembly 22a which comprises a rope wheel 28 a;

the counterweight block 23a is fixed at the upper end of the movable frame 21a and is used for tensioning the speed-limiting steel wire rope 7 a;

and the electrical switch 24a is arranged on the base or the movable frame, and when the suspension cage exceeds the speed, the speed limiter assembly works to clamp the speed limiting steel wire rope and trigger the electrical switch.

The speed limiter assembly is an existing speed limiter assembly, can adopt a cam friction type or centrifugal block throwing clamping type working principle, and as shown in fig. 9 and 10, the existing clamping type speed limiter assembly mainly comprises a rope clamping device 29a, a ratchet mechanism 30a, a throwing block 31a, a connecting rod 32a, a return spring 33a, a swing rod switch 34a and other structures except a rope pulley 28a, the throwing blocks 31a are symmetrically fixed at the edges of two ends of the rope pulley 28a, and the throwing blocks 31a are connected in series with the return spring 33a through the connecting rod 32 a; the swing rod switch 34a is connected with the swing block 31a, after the suspension cage runs at an overspeed, the swing block 31a triggers the swing rod switch 34a to beat a plate under the action of centrifugal force, the ratchet mechanism 30a is clamped, the ratchet mechanism 30a drives the swing rod 35a of the rope clamp 29a to act to clamp a steel wire rope, and meanwhile, the electric switch 24a is triggered.

In this embodiment, the speed governor assembly 22a has an extension limit switch 25a, and the extension limit switch 25a is fixed to the guide rod 20a through a bracket and is used for monitoring the extension amount of the speed-limiting steel wire rope, and when the extension amount of the speed-limiting steel wire rope exceeds a set value, the extension limit switch 25a is triggered by the movable frame 21a, so that the cage stops operating.

In this embodiment, an electrical verification switch 26a is installed on the suspension cage 3a or the lifting linkage mechanism 6a, when the swing arm rotates to drive the braking device to work, the swing arm drives the rotation shaft to rotate to trigger the electrical verification switch, so that the elevator control system is powered off, and the suspension cage is lifted by means of inertia of the four-bar linkage mechanism to drive the braking device to be braked on the guide rail, so that the suspension cage stops running.

In the present embodiment, the braking device 8a is of a progressive or instantaneous structure.

The speed monitoring device 4a can adopt a pendulum bob friction type or centrifugal swing block clamping type principle, when the centrifugal swing block of the speed monitoring device 4a touches the hair clip holding arm to act after overspeed, a speed-limiting steel wire rope 7a in a rope wheel of the speed monitoring device 4a is clamped on the rope wheel, or the swing amplitude of the pendulum bob on a curve cam of the pendulum bob is larger than the normal amplitude after overspeed, the swing arm of the pendulum bob is clamped in a ratchet groove of the speed monitoring device 4a to lock, and simultaneously an electrical switch for action verification is triggered, and a control system of the suspension cage 3a receives a signal of the electrical switch and then stops; under the action of inertia force, the braking and stopping device 8a fixed on the suspension cage 3a continues to perform inertia operation, at the moment, the speed monitoring device 4a and the speed-limiting steel wire rope 7a are both in a stopping state, under the action of the speed-limiting steel wire rope 7a, the lifting arm 11a drives the rotating shaft 9a and the swinging arm 10a to rotate, the swinging arm 10a drives the wedge block of the braking and stopping device 8a to move, the gap between the wedge block and the guide surface of the guide rail 1a is eliminated, so that the suspension cage 3a is braked on the guide rail 1a, when the braking and stopping device 8a is braked, the electrical verification switch 26a of the lifting and stopping linkage mechanism is triggered, and at the moment, the control system receives a power-off and stopping signal for the second time.

This application speed monitoring device 4a and braking pincers separately set up, have set up a plurality of switch control simultaneously, when easy to assemble overhauls and the operation that resets, and fail safe nature further improves.

The overspeed stopper of the present embodiment can be used in embodiment 1.

The above description is only a preferred embodiment of the present invention, and 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, which are directly or indirectly applied to other related technical fields, are included in the scope of the present invention.