CN217996428U

CN217996428U - Direct-drive type elevator

Info

Publication number: CN217996428U
Application number: CN202121317956.6U
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: 2022-12-09
Anticipated expiration: 2031-06-11

Abstract

The application discloses a direct drive type elevator, which is arranged in a hoistway and comprises a movable workbench, a guide rail, a rack, a suspension cage, an overspeed protection device, a balance weight, a driving host, a first guide wheel set, a suspension cable and a first coded disc connected with the suspension cable; the first guide wheel set is arranged on the movable workbench, the suspension cable is connected with the suspension cage and the counterweight through the first guide wheel set, the counterweight is used for reducing the load of the driving main machine and reducing energy consumption, and the suspension cable realizes a rope winding mode of 1; the guide rail is fixed on the inner wall of the hoistway, and the rack is fixed on the guide rail; the driving host is arranged on the suspension cage and directly drives the suspension cage to move up and down. The construction method is arranged in the well, and the construction progress is not influenced by the external environment; the compensation rope is arranged to compensate the weight of the suspension cable when the lifting height is high.

Description

Direct-drive type elevator

Technical Field

The utility model relates to a building engineering equipment field, concretely relates to direct-drive lift.

Background

The existing construction elevator is generally positioned outside a building, and is guided and supported by a standard knot to move up and down, the outdoor elevator is greatly influenced by weather, a hoisting steel wire rope or a gear rack is generally adopted for direct driving, the existing domestic construction elevator (SC type construction elevator) is basically a gear rack type construction elevator, the energy consumption of the elevator is high, the operation noise is high, and the safety and reliability of the elevator are reduced in the strong wind and thunderstorm weather because the standard knot is frequently in soft connection with a building body; the whole equipment is outdoors, and the surface protection requirement on the equipment is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a direct drive formula lift is proposed.

The utility model discloses the technical scheme who takes as follows:

a direct drive type elevator is installed in a hoistway and comprises a movable workbench, a guide rail, a rack, a suspension cage, an overspeed protection device, a counterweight, a driving host machine, a first guide wheel set, a suspension cable and a first coded disc connected with the suspension cable;

the first guide wheel set is arranged on the movable workbench, the suspension cable passes through the first guide wheel set to connect the suspension cage and the counterweight, and the suspension cable realizes a rope winding mode of 1;

the guide rail is fixed on the inner wall of the well, the rack is fixed on the guide rail, and the driving host is installed on the suspension cage;

the driving gear of the driving host is meshed with the rack to directly drive the suspension cage to move up and down, or the rack is a magnetic stripe and the driving host is a linear motor of a variable magnetic machine to realize magnetic suspension up and down movement under the action of magnetic force.

The direct drive type elevator is arranged in the shaft, so that the construction progress is not influenced by the external environment; the driving host is matched with the rack to directly drag the suspension cage to operate, and the suspension cable is connected with the suspension cage and the balance weight, so that the requirement of the driving host on torque is reduced.

In one embodiment of the present invention, a rope hoist is provided at both ends of the movable working platform; the bearing beam of the movable working platform is telescopic, the movable working platform is provided with telescopic protective guardrails, 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 is jacked, the jacking limiting devices are placed in a working state, and are in real-time contact with a well wall through the elastic rollers, so that the equipment is prevented from being damaged by deflection during jacking;

the driving main machine is a three-phase variable frequency motor with a gear reduction box, the driving main machine transmits power through a gear train, and the gear train is provided with a protective cover; or the driving host machine comprises a variable magnetic pole, the rack is a magnetic strip, and the driving host machine is matched with the rack to realize magnetic suspension transmission;

the overspeed protection device comprises a speed monitoring device, an overspeed stopping device, a speed-limiting rope tension wheel, a speed-limiting steel wire rope and a lifting linkage mechanism, wherein the speed monitoring device is arranged on the movable working platform, the speed-limiting rope tension wheel is arranged on a pit or a guide rail at the bottom, the lifting linkage mechanism is connected with the speed-limiting steel wire rope and the overspeed stopping device, and the lifting linkage mechanism and the overspeed stopping device are fixed on a suspension cage or a counterweight.

In one embodiment of the present invention, the guide rail is a T-shaped guide rail, the guide rail passes through the support to be fixed on the inner wall of the well, the guide rail guide top surface contains the rack, the guide rail one end has the tenon other end to have the tongue-and-groove, and the tenon tongue-and-groove cooperation is adopted between the guide rail. Magnetic levitation technology is optionally employed.

In one embodiment of the present invention, the guide rail includes a first portion and a second portion perpendicular to each other.

In one embodiment of the present invention, the first code disc is fixed at the top of the cage, one end of the suspension cable passes through the locking device and the overload monitoring device and then is fixed relatively to the upper end of the cage, the remaining amount of the suspension cable is stored on the first code disc, and the other end of the suspension cable passes through the tension adjusting device and then is fixed relatively to the counterweight downwards after passing through the first guiding wheel set.

In one embodiment of the present invention, the suspension cage comprises a suspension cage frame with a backpack structure, and the suspension cage frame is fixed with a driving host, an overspeed braking device, a lifting linkage mechanism, a shock pad, a suspension upper beam, a suspension cage deviation prevention clamping plate, an overhaul prevention device and a guiding device; the counterweight is embedded into a backpack structure of the cage hanging frame; the stopping device is fixed at the lower part of the lifting cage frame and is linked with the lifting linkage mechanism and the speed monitoring device through a speed-limiting steel wire rope;

the upper end of the cage is provided with a first upper wheel set, the balance weight is provided with a second upper wheel set, one end of the suspension sling passes through the locking device and the overload monitoring device and then is fixed relatively to the movable workbench, the allowance of the suspension sling is stored on a first coded disc, the first coded disc is placed on the movable workbench or outside a well on the top layer, the other end of the suspension sling downwards bypasses the first upper wheel set and then upwards bypasses a first guide wheel set, then downwards bypasses a second upper wheel set and then upwards passes through the tension adjusting device and then is fixed relatively to the movable workbench;

and the upper part and the lower part of the cage hanging frame are also provided with guide devices, each guide device comprises a guide limiting wheel and a cleaning roller, and the guide devices are used for being matched with the guide surfaces of the guide rails.

Preferably, the guiding device is fixed to the lower part of the overspeed braking device.

In one embodiment of the present invention, the compensation rope is disposed between the cage and the counterweight, and is used for balancing the weight of the suspension rope, the second weight plate is connected to the end of one end of the compensation rope, the second weight plate is placed on the cage or the counterweight, the compensation rope is a compensation chain, a compensation rope or a compensation belt, and when the compensation rope is a compensation rope, the compensation rope further includes a tension pulley and a tension device engaged with the compensation rope.

In one embodiment of the present invention, one end of the compensation cable is fixed to the cage, the other end of the compensation cable is fixed to the counterweight, the remaining amount of the compensation cable is stored in the second code wheel, and the second code wheel is placed on the cage or the counterweight.

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

one end of the compensating cable is fixed relative to the well pit, and the other end of the compensating cable bypasses the first lower wheel set upwards, then bypasses the second guide wheel set downwards, then bypasses the second lower wheel set upwards, and is fixed relative to the well pit downwards; at least one end of the compensation cable is provided with a tension adjusting device, and the other end of the compensation cable is connected with the second code disc after being locked.

In one embodiment of the present invention, the compensating rope is a compensating rope, and further comprises a tensioning device; the tensioning device is arranged at the tail end of the compensating rope, or the tensioning device is arranged at the bottom of the well and used for tensioning the compensating rope in cooperation with the second guide wheel set.

In one embodiment of the present invention, the second yard disc is installed at the bottom of the hoistway, at the bottom of the building, or outside the hoistway at the bottom.

The utility model has the advantages that: the direct-drive elevator is arranged in the well, the construction progress is not influenced by the external environment, and the driving host is matched with the rack to directly drive the suspension cage to operate; the suspension cable is used for connecting the suspension cage and the balance weight, so that the requirement of the driving host on the torque is reduced; the compensation rope is arranged to compensate the weight of the suspension cable when the lifting height is high.

Description of the drawings:

FIG. 1 is a first arrangement of a direct drive lift;

FIG. 2 is a second arrangement of a direct drive elevator;

FIG. 3 is a third arrangement of a direct drive lift;

FIG. 4 is a fourth arrangement of a direct drive lift;

FIG. 5 is a schematic view of a guide rail;

FIG. 6 is a partial schematic view of a guide;

FIG. 7 is a schematic view of a movable table;

FIG. 8 is a schematic view of a cage;

FIG. 9 is a schematic top view of the counterweight in positional relationship to the cage;

FIG. 10 is a schematic view of an overspeed braking apparatus of embodiment 2;

FIG. 11 is a schematic view of a speed monitoring device;

FIG. 12 is a schematic view of a lifting linkage;

fig. 13 is a schematic diagram of a governor assembly and an appliance switch;

fig. 14 is a schematic view of another angle of the governor assembly and appliance switch.

The figures are numbered:

1. a hoistway; 2. a movable table; 3. a guide rail; 4. a rack; 5. a suspension cage; 6. balancing weight; 7. driving the host; 8. a first guide wheel set; 9. a suspension cable; 10. a first code wheel; 11. a compensating rope; 12. a second code wheel; 15. a second guide wheel set; 16. a tensioning device; 17. a guide device; 18. a cleaning roller; 19. a guide limiting wheel; 20. a first upper wheel set; 21. a second upper wheel set; 22. a first lower wheel set; 23. a second lower wheel set; 24. a rope hoist; 25. protecting the guard rail; 26. jacking limiting devices; 27. a limiting device body; 28. a roller; 29. hanging a cage frame; 30. a shock pad; 31. hanging an upper beam; 32. a cage deviation prevention clamp plate; 33. a maintenance preventing device; 34. a backpack-type structure; 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 sheave; 29a, a rope gripper; 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 to 4, a direct drive elevator is installed in a hoistway 1, and includes a movable table 2, a guide rail 3, a rack 4, a cage 5, an overspeed protection device, a counterweight 6, a driving main machine 7, a first guide wheel set 8, a suspension cable 9, and a first code wheel 10 connected to the suspension cable 9;

the first guide wheel set 8 is arranged on the movable workbench 2, the suspension cable 9 is connected with the suspension cage 5 and the counterweight 6 through the first guide wheel set 8, the counterweight 6 is used for relieving the load of the driving host 7 and reducing the energy consumption, and the suspension cable 9 realizes the rope winding mode of 1;

the guide rail 3 is fixed on the inner wall of the well 1, and the rack 4 is fixed on the guide rail 3; the driving main machine 7 is arranged on the suspension cage 5, and a driving gear of the driving main machine 7 is meshed with the rack 4 to directly drive the suspension cage 5 to move up and down.

The direct drive type elevator is arranged in the well 1, and the construction progress is not influenced by the external environment; the driving main machine 7 directly drags the suspension cage 5 to operate through the matching of the gear and the rack 4, and the suspension sling 9 is connected with the suspension cage 5 and the balance weight 6, so that the requirement of the driving main machine 7 on the torque is reduced.

In actual use, the following steps can be further set: the rack is a magnetic strip, the driving host is a linear motor of a variable magnetic machine, and magnetic suspension up-and-down operation is realized under the action of magnetic force.

As shown in fig. 7, in one embodiment of the present invention, two ends of the movable working platform are provided with a rope hoist 24; the bearing beam of the movable working platform is telescopic, the movable working platform is provided with telescopic protective guardrails 25, 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 is jacked, the jacking limiting devices 26 are in a working state, and are in real-time contact with the wall of the hoistway 1 through the elastic roller 28, so that the equipment is prevented from being damaged by deflection during jacking;

the driving host 7 is a three-phase variable frequency motor with a gear reduction box, the driving host 7 transmits power through a gear train, and the gear train is provided with a protective cover; or the driving host machine comprises a variable magnetic pole, the rack is a magnetic strip, and the driving host machine is matched with the rack to realize magnetic suspension transmission;

the overspeed protection device comprises a speed monitoring device, an overspeed braking device, a speed-limiting rope tension wheel, a speed-limiting steel wire rope and a lifting linkage mechanism, wherein the speed monitoring device is installed on a movable working platform, the speed-limiting rope tension wheel is installed on a guide rail 3 at the bottom or a pit, the lifting linkage mechanism is connected with the speed-limiting steel wire rope and the overspeed braking device, and the lifting linkage mechanism and the overspeed braking device are fixed on a suspension cage 5 or a balance weight 6.

In the utility model discloses in one of them embodiment, guide rail 3 is T type guide rail 3, and guide rail 3 passes through the support to be fixed at the inner wall of

well

1, and 3 direction top surfaces of guide rail contain

rack

4, and 3 one ends of guide rail have the tenon other end to have the tongue-and-groove, adopt the cooperation of tenon tongue-and-groove between the guide rail 3.

As shown in fig. 1 and 2, in one embodiment of the present invention, the first code wheel 10 is fixed on the top of the cage 5, one end of the suspension cable 9 passes through the locking device and the overload monitoring device and then is fixed relatively to the upper end of the cage 5, the remaining amount of the suspension cable 9 is stored on the first code wheel 10, and the other end of the suspension cable 9 passes upward around the first guiding wheel set 8 and then passes through the tension adjusting device and then is fixed relatively to the counterweight 6.

As shown in fig. 8, in one embodiment of the present invention, the suspension cage 5 includes a suspension cage frame 29 of a backpack structure 34, and the suspension cage frame 29 is fixed with the driving main machine 7, the overspeed braking device, the lifting linkage mechanism, the shock pad 30, the suspension upper beam 31, the suspension cage deviation preventing clamp plate 32, the maintenance preventing device 33 and the guiding device. The braking device is fixed at the lower part of the lifting cage frame and is linked with the lifting linkage mechanism and the speed monitoring device through a speed-limiting steel wire rope.

As shown in fig. 5, in one embodiment of the present invention, the guide rail 3 includes a first portion and a second portion perpendicular to each other, and the rack 4 is embedded in the second portion. The upper and lower parts of the cage 29 are also provided with guides 17, as shown in fig. 6, the guides 17 comprise cleaning rollers 18 arranged on both sides of the second part, and further comprise guide limit wheels 19 arranged at the upper and lower ends of the cleaning rollers 18, and the two corresponding guide limit wheels 19 are engaged with the second part of the guide rail 3. The guiding device positioned below the cage frame is fixed at the lower part of the braking device.

As shown in fig. 3 and 4, a first upper wheel set 20 is arranged at the upper end of the cage 5, a second upper wheel set 21 is arranged on the counterweight 6, one end of the suspension cable 9 passes through the locking device and the overload monitoring device and then is fixed relative to the movable workbench 2, the surplus of the suspension cable 9 is stored on the first code wheel 10, the first code wheel 10 is placed on the movable workbench or outside the hoistway 1 at the top layer, the other end of the suspension cable 9 downwardly bypasses the first upper wheel set 20, then upwardly bypasses the first guide wheel set 8, further downwardly bypasses the second upper wheel set 21, and then upwardly passes through the tension adjusting device and then is fixed relative to the movable workbench 2.

As shown in fig. 1 to 4 and 9, the counterweight 6 is embedded in the backpack-type structure 34 of the suspension cage. Embedding in this application means that the counterweight moves up and down spatially in the backpack structure 34, i.e. the counterweight is embedded in the backpack structure 34 when the counterweight 6 and the cage are in the same plane. The device can effectively save space, so that the door opening mode of the cage can be more flexibly set.

As shown in fig. 1 to 4, the present embodiment further includes a compensation rope 11 and a second code disc 12, the compensation rope 11 is disposed between the suspension cage 5 and the counterweight 6 for balancing the weight of the suspension rope 9, the second code disc 12 is connected to a terminal of one end of the compensation rope 11, the second code disc 12 is placed on the suspension cage 5 or the counterweight 6, the compensation rope 11 is a compensation chain, a compensation rope or a compensation belt, and when the compensation rope 11 is a compensation rope, the present embodiment further includes a tension wheel and a tension device 16 cooperating with the compensation rope.

As shown in fig. 2, in one embodiment of the present invention, one end of the compensating rope 11 is fixed to the suspension cage 5, the other end is fixed to the counterweight 6, and the second weight 12 is placed on the counterweight 6. As shown in FIG. 1, the second code wheel 12 is placed on the cage 5.

As shown in fig. 1 and 4, in one embodiment of the present invention, a second guiding wheel set 15 is disposed at the bottom of the hoistway 1, a first lower wheel set 22 is disposed at the lower end of the cage 5, and a second lower wheel set 23 is disposed on the counterweight 6;

one end of the compensating rope 11 is fixed relatively to the pit of the well 1, and the other end of the compensating rope upwards bypasses the first lower wheel set 22, downwards bypasses the second guide wheel set 15, then upwards bypasses the second lower wheel set 23, and then downwards is fixed relatively to the pit of the well 1; at least one end of the compensating rope 11 is provided with a tension adjusting device, and the other end of the compensating rope is connected with the second code disc 12 after being locked.

As shown in fig. 1 and 4, in one embodiment of the present invention, the compensating rope 11 is a compensating rope, and further includes a tensioning device 16 disposed at the bottom of the hoistway 1 and engaged with the compensating rope 11, wherein the tensioning device 16 is engaged with the second guiding wheel set 15 to tension the compensating rope. In other embodiments, the tensioning device may also be provided at the end of the compensating rope.

In one embodiment of the present invention, the second code wheel 12 is installed at the bottom of the well 1, the bottom of the building or outside the well 1.

Example 2

As shown in fig. 10 to 14, an overspeed braking device for an elevator, the elevator includes a guide rail 1a provided 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 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 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 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.

As shown in fig. 10 and 12, 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, wherein the speed limiter assembly 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 governor assembly is an existing speed governor assembly, can adopt a cam friction type or centrifugal throwing block clamping type working principle, and as shown in fig. 13 and 14, the speed governor assembly is an existing clamping type speed governor assembly, and 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 besides 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 through the connecting rod 32a and the return spring 33 a; the swing rod switch 34a is connected with the swinging block 31a, when the suspension cage runs at an overspeed, the swinging 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 and 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 block-swinging clamping type principle, when the centrifugal block-swinging of the speed monitoring device 4a after overspeed touches a hair clip holding arm to act, 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 swinging amplitude of the pendulum bob on a curve cam of the pendulum bob after overspeed is larger than the normal amplitude, the swinging 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 the suspension cage 3a control system stops after receiving a signal of the electrical switch; 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 braking apparatus of the present embodiment can be used in embodiment 1.

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

Claims

1. A direct drive type elevator is characterized by being installed in a hoistway and comprising a movable workbench, a guide rail, a rack, a suspension cage, an overspeed protection device, a counterweight, a driving host, a first guide wheel set, a suspension cable and a first coded disc connected with the suspension cable;

the first guide wheel set is arranged on the movable workbench, the suspension cable is connected with the suspension cage and the counterweight through the first guide wheel set, and the suspension cable realizes a rope winding mode of 1;

2. The direct drive lift of claim 1, wherein a rope hoist is provided at each end of the movable work platform; the bearing beam of the movable working platform is telescopic, the movable working platform is provided with telescopic protective guardrails, and four corners of the movable working platform are provided with jacking limiting devices, wherein each jacking limiting device comprises a limiting device body and an elastic roller wheel arranged on the limiting device body; when the elevator is jacked, the jacking limiting device is in a working state and is in real-time contact with the wall of the well through the elastic roller, so that the equipment is prevented from being damaged by deflection during jacking;

3. The direct drive elevator according to claim 1, wherein the guide rail is a T-shaped guide rail, the guide rail is fixed on the inner wall of the hoistway through a bracket, the guide rail guide top surface comprises the rack, the guide rail has a tenon at one end and a mortise at the other end, and the guide rails are matched with each other through the tenon and the mortise.

4. The direct drive elevator as claimed in claim 1, wherein the first code wheel is fixed on the top of the cage, one end of the suspension cable passes through the locking device and the overload monitoring device and is fixed relative to the upper end of the cage, the rest of the suspension cable is stored on the first code wheel, and the other end of the suspension cable passes upward around the first guide wheel set and is fixed relative to the counterweight downward through the tension adjusting device.

5. The direct drive elevator as claimed in claim 1, wherein the cage comprises a cage frame of a backpack structure, and a driving main machine, an overspeed braking device, a lifting linkage mechanism, a shock pad, a suspension upper beam, a cage deviation preventing clamping plate, a maintenance preventing device and a guiding device are fixed on the cage frame; the counterweight is embedded into a backpack structure of the cage hanging frame; the stopping device is fixed at the lower part of the lifting cage frame and is linked with the lifting linkage mechanism and the speed monitoring device through a speed-limiting steel wire rope;

the upper part and the lower part of the cage hanging frame are also provided with guide devices, each guide device comprises a guide limiting wheel and a cleaning roller, and the guide devices are used for being matched with the guide surfaces of the guide rails; and the guide device positioned below the cage frame is fixed at the lower part of the braking device.

6. The direct drive lift of claim 1, further comprising a compensating rope disposed between the cage and the counterweight for balancing the weight of the suspension rope, and a second code wheel connected to the end of one end of the compensating rope, the second code wheel being placed on the cage or the counterweight, the compensating rope being a compensating chain, a compensating rope or a compensating belt, and when the compensating rope is a compensating rope, a tension pulley and a tension device engaged with the compensating rope.

7. A direct drive lift according to claim 6 wherein one end of said compensating cable is fixed relative to said cage and the other end is fixed relative to said counterweight, the remainder of said compensating cable being stored on a second code wheel, said second code wheel being positioned on said cage or said counterweight.

8. The direct drive elevator as claimed in claim 6, wherein a second guiding wheel set is provided at the bottom of the shaft, a first lower wheel set is provided at the lower end of the cage, and a second lower wheel set is provided on the counterweight;

9. The direct drive elevator as claimed in claim 8, wherein the compensating rope is a compensating rope, further comprising a tensioner; the tensioning device is arranged at the tail end of the compensating rope, or the tensioning device is arranged at the bottom of the well and is matched with the second guide wheel set to tension the compensating rope.

10. The direct drive elevator of claim 9, wherein the second landing gear is mounted at a bottom of a hoistway, a building floor, or outside a floor hoistway.