CN218174313U

CN218174313U - Elevator machine

Info

Publication number: CN218174313U
Application number: CN202121319211.3U
Authority: CN
Inventors: 彭忠良; 赵安莉
Original assignee: Zhejiang Banmen Machinery Technology Co ltd
Current assignee: Zhejiang Banmen Machinery Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-12-30
Anticipated expiration: 2031-06-11

Abstract

The application discloses a lifter, wherein a suspension cage and a counterweight are both positioned in a well, an overhead beam is arranged above the well, a first guide wheel set is arranged on the overhead beam, and the suspension cage and the counterweight are suspended below the overhead beam through a traction cable wound around the first guide wheel set; the bottom of the shaft is provided with a second guide wheel set, and the cage and the counterweight are linked through a compensating 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 always in the well. 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.

Description

Elevator machine

Technical Field

The utility model relates to a building engineering construction equipment field, concretely relates to wiring method and lift of lift.

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.

In addition, a construction hoist is positioned in an elevator shaft of a building, traction transmission in a traction machine pit installation mode is adopted, the rope winding ratio is 2.

SUMMERY OF THE UTILITY MODEL

To the above problems, the present invention provides a rope winding method for a lift and a lift, which overcomes at least one deficiency.

The utility model adopts the following technical scheme:

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 cage and the counterweight are linked through a compensating rope 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 coded 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, 2 or 4;

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 to 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 present invention, the cage is provided with a first upper wheel set at an upper end thereof, the counterweight is provided with a second upper wheel set, one end of the traction cable is fixed relatively to the top beam after passing through the locking device, the other end of the traction cable is downward wound around the first upper wheel set and then upward wound around the first guide wheel set, and then downward wound around the second upper wheel set and upward fixed relatively to the top beam after passing through the tension adjusting device, the end of one end of the traction cable is connected to the first code wheel, and the one end of the traction cable is further provided with an overload protection device.

In one embodiment of the present invention, one end of the traction cable is fixed to the upper end of the suspension cage, the other end of the traction cable passes upward around the first guide wheel set and then is fixed to the counterweight, and the end of one end of the traction cable is connected to a first code wheel fixed to the suspension cage or the top 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, the lower end of the suspension cage is provided with a first lower wheel set, and the counterweight is provided with a second lower wheel set;

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 present invention, the hoistway bottom is further provided with a third guide wheel, there are two sets of second guide wheel sets, one end of the compensation rope is fixed relative to the suspension cage, and the other end of the compensation rope bypasses the third guide wheel downwards, and then sequentially bypasses the first set of second guide wheel set, the traction wheel of the traction machine and the second set of second guide wheel set, and then upwards is fixed relative to the counterweight;

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 well 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 linked through a compensation rope wound on a second guide wheel set, a second coded disc is connected with one end of the compensation rope, and a tension adjusting device is arranged at the tail end of the compensation rope; 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 every 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 above the traction cable is respectively hung at two ends of the suspension cage and the counterweight, and the compensation cable below the traction cable 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 present invention, the suspension cage is provided with a first upper wheel set at an upper end thereof, the counterweight is provided with a second upper wheel set, one end of the traction cable is fixed relative to the top beam after passing through the locking device, the other end of the traction cable is downward wound around the first upper wheel set and then upward wound around the first guide wheel set, and then downward wound around the second upper wheel set and then upward fixed relative to the top beam after passing through the tension adjusting device, the ends of the at least one end of the traction cable and the compensation cable are provided with the tension adjusting device, and the end of one end of the compensation cable is provided with the tensioning device.

In one embodiment of the present invention, one end of the pulling cable is fixed relatively to the upper end of the cage, and the other end of the pulling cable is fixed relatively to the counterweight after passing over the first guiding wheel set, and the remaining amount of the pulling cable is stored on the first code wheel which is placed on the cage or 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 present invention, the elevator further comprises a third guide wheel arranged at the bottom of the hoistway, two sets of the second guide wheel sets are provided, one end of the compensation cable is fixed relative to the suspension cage, and the other end of the compensation cable sequentially bypasses the first set of the second guide wheel set, the traction wheel of the traction machine and the second set of the second guide wheel set after bypassing the third guide wheel downwards, and then is fixed relative to the counterweight upwards; 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 beneficial effects of the utility model are 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 always in the well. The traction cable and the compensation cable are used, the traction cable above the traction cable is respectively hung at two ends of the suspension cage and the counterweight, and the compensation cable below the traction cable 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. hoisting a cage; 4. balancing weight; 5. a first guide wheel set; 6. a traction rope; 7. a second guide wheel set; 8. a compensating rope; 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, mounting 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 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 wrapping 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 group, 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 during actual application, the rope winding ratio of the traction rope is 1, 1 or 4;

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, so that the form of the traction mechanism can effectively reduce energy consumption, reduce the system load of a main shaft bearing of the traction machine 9 and prolong the service life of the traction mechanism; 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 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, the upper end of the suspension cage 3 is provided with a first upper wheel set 12, the counterweight 4 is provided with a second upper wheel set 13, one end of the traction cable 6 passes through the locking device and is relatively fixed to the top beam 2, the other end of the traction cable downwardly passes through the first upper wheel set 12 and upwardly passes through the first guide wheel set 5, and then downwardly passes through the second upper wheel set 13 and is relatively fixed to the top beam 2 after upwardly passing through the tension adjusting device, the end of one end of the traction cable 6 is connected with a first code wheel 10, and one end of the traction cable 6 is further provided with an overload protection device.

As shown in fig. 3 and 4, in one embodiment of the present invention, one end of the traction cable 6 is fixed relatively 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 relatively to the counterweight 4, the end of one end of the traction cable 6 is connected to a first code wheel 10, and the first code wheel 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.

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, a third guiding wheel 16 is further disposed at the bottom of the hoistway 1, two sets of second guiding wheel sets 7 are provided, one end of the compensating rope 8 is relatively fixed to the suspension cage 3, and the other end of the compensating rope sequentially bypasses the third guiding wheel 16, then sequentially bypasses the first set of second guiding wheel set 7, the traction sheave of the traction machine 9, and the second set of second guiding wheel set 7, and then is relatively fixed to the counterweight 4, the coded disc of the compensating rope 8 is a second coded disc 11, and the end of one end of the compensating rope 8 is stored in the second coded disc 11 after passing through the locking device. 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;

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 to the suspension cage 3 and the counterweight 4, so that the form of the utility model can effectively reduce energy consumption, reduce the system load of a main shaft bearing of the traction machine 9 and prolong the service life of the traction machine; 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, the upper end of the suspension cage 3 is provided with a first upper wheel set 12, the counterweight 4 is provided with a second upper wheel set 13, one end of the traction cable 6 is fixed relative to the top beam 2 after passing through the locking device, the other end of the traction cable bypasses the first upper wheel set 12 downwards and then bypasses the first guide wheel set 5 upwards, and then bypasses the second upper wheel set 13 downwards and then upwards passes through the tension adjusting device and then is fixed relative to the top beam 2, the end of at least one end of the traction cable and the compensation cable is provided with the tension adjusting device, and the end of one end of the compensation cable is provided with the tensioning device.

As shown in fig. 3 and 4, in one embodiment of the present invention, one end of the pulling cable 6 is fixed to the upper end of the cage 3, and the other end of the pulling cable goes upward around the first guiding wheel set 5 and then is fixed to the counterweight 4, and the remaining amount of the pulling cable is stored in 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 a 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, a 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 at the pit of the well or outside the well.

As shown in fig. 4, in one embodiment of the present invention, the present invention further includes a third guiding wheel 16 disposed at the bottom of the hoistway 1, two sets of the second guiding wheel sets 7 are provided, one end of the compensating rope 8 is fixed relative to the suspension cage 3, and the other end of the compensating rope sequentially bypasses the third guiding wheel 16, the first set of the second guiding wheel set 7, the traction sheave of the traction machine 9, and the second set of the second guiding wheel set 7, and then is fixed relative 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 fixed on the 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 present embodiment discloses an overspeed braking device for an elevator, the elevator includes a guide rail 1a disposed on a sidewall 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 8a;

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 the guide rail 1a on the shaft;

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 use, 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 or 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 utility model discloses construction elevator in the well is mainly applicable to, separately sets up speed limit and arresting gear, easy to assemble maintenance and the operation that resets. 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 also fixedly provided 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 matched with the rotating part 15a corresponding to the rotating shafts in a hinged mode, 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 sub-rods 17a which are nested with each other, and a pressure spring 18a with adjustable compression amount is arranged between the two sub-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 28a;

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 7a;

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 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, the swinging arm 10a drives the wedge block of the braking device 8a to move, a 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 device 8a is braked, the electrical verification switch 26a of the lifting linkage mechanism is triggered, and at the moment, the control system receives a power-off stop 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 braking apparatus of the present embodiment can be used in embodiment 1.

The above is only the preferred embodiment of the present invention, and not the patent protection scope of the present invention is limited thereby, and all the equivalent structure changes made by the contents of the specification and the drawings are 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 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 hoisting device comprises a hoisting shaft, a hoisting cage, a first guide wheel set, a first coded disc, a first overload protection device and a second overload protection device, wherein the hoisting shaft is arranged above the shaft, the first guide wheel set is arranged on the hoisting shaft, the hoisting cage and the balance weight are suspended below the hoisting shaft 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 the 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 every 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 sheave of the traction machine, and the traction machine drives the suspension cage and the counterweight to move up and down alternately 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 of a well or a guide rail of the pit, 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 a suspension cage or a counterweight;

2. The elevator as claimed in 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 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 ends of at least one end of the traction cable and the compensating cable are provided with tension adjusting devices, and one end of the compensating cable is provided with a tensioning device.

3. The lift of claim 1, wherein one end of the pull cable is fixed relative to the cage upper end and the other end of the pull cable is fixed relative to the counterweight downward after passing upwardly around the first guide wheel set, the excess of the pull cable being stored on a first code wheel which is placed on the cage or the counterweight.

4. The lift of claim 1, 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 groups, one end of the compensation cable is fixed relative to the well pit, the other end of the compensation cable 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 fixed relative to the well pit, and the second yard disc is placed outside the well pit or the well.

5. The elevator as claimed in claim 1, 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 wrapping 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 is fixed on the suspension cage or the balance weight.