CN109534123B

CN109534123B - There is computer lab vertical lift elevator

Info

Publication number: CN109534123B
Application number: CN201811387103.2A
Authority: CN
Inventors: 王秀庆; 张新华; 何绍木; 陈坤
Original assignee: University of Shaoxing
Current assignee: University of Shaoxing
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2020-03-06
Anticipated expiration: 2038-11-21
Also published as: CN109534123A

Abstract

The invention discloses a vertical elevator with a machine room, which comprises a lift car, a cable arranged on the lift car and a well matched with the lift car; a sliding rail is arranged on the well; the car is provided with a safety device for preventing the car from falling after the cable is broken; according to the invention, through the arrangement of the safety device, after the cable is broken, the safety device can be started to prevent the car from falling, so that the personal safety of passengers in the car is ensured.

Description

There is computer lab vertical lift elevator

Technical Field

The invention belongs to the technical field of elevator safety, and particularly relates to a vertical elevator with a machine room.

Background

The vertical lift elevator is widely applied as a common building device in daily life of people, and can cause abnormal conditions such as large acceleration of sudden falling of a lift car or overspeed due to certain factors in the actual use process, so that great threat is brought to the personal safety of passengers, wherein the fracture of a traction rope caused by stress concentration generated by the twisting of a lift car lifting driving motor is one of the main threats to the falling of the lift car.

A vertical elevator that prevents falling as disclosed in chinese patent CN106865394B, including the car and carry out the balance weight device of balanced counter weight to the car, the balance weight device includes the balancing weight main part along the corresponding inside wall up-and-down motion of elevartor shaft, sets up the counter weight guider that leads to the balancing weight main part from top to bottom, and locates the counter weight regulation part in the balancing weight main part.

Above-mentioned elevator plays the purpose that prevents the car in advance and fall through making the difficult fracture of haulage rope, and when other problems appear and lead to the haulage rope still to take place unexpected fracture, still can not prevent that the car from falling, can't guarantee passenger's personal safety.

Disclosure of Invention

The invention provides a vertical elevator with a machine room, which has high safety and overcomes the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a vertical elevator with a machine room comprises a car, a cable arranged on the car and a well matched with the car; a sliding rail is arranged on the well; the car is provided with a safety device for preventing the car from falling after the cable is broken; through the arrangement of the safety device, after the cable is broken, the safety device can be started to prevent the car from falling, so that the personal safety of passengers in the car is guaranteed.

Further, the safety device comprises a deceleration structure for slowing the falling speed of the car, a supporting structure for supporting and fixing the car and a safety structure for controlling the deceleration structure and the supporting structure to be started; through the arrangement of the speed reducing structure, when the lift car falls down, the falling speed of the lift car can be reduced, and the lift car is prevented from falling at a high speed to generate huge impact; the supporting structure is used for supporting and fixing the car in the shaft and preventing the car from continuously sliding downwards, so that the personal safety of passengers is ensured; the car is decelerated firstly and then fixed by the supporting structure through the matching arrangement of the deceleration framework and the supporting structure, so that the speed is not too high when the car is in contact with the supporting structure, the contact is softer, the impact is smaller, and the personal safety of passengers is further ensured; the safety structure plays a role in controlling the starting of the speed reducing structure and the supporting structure, does not need electrical control, can be automatically started under the driving of a mechanical structure when the cable is broken, is not influenced by factors such as power failure and the like, and is more stable, safe and reliable.

Furthermore, the speed reducing structure comprises a pulley capable of moving back and forth, a pulley lever in rotation stopping fit with the pulley, a primary brake component in fit with the pulley lever and a secondary brake component in fit with the primary brake component; the pulley can roll tightly against the sliding rail through the matching of the pulley and the pulley rod, and the rotating speed of the pulley is reduced through the arrangement of the brake assembly, so that the aim of reducing the falling speed of the lift car is fulfilled; if the parts such as the support rod and the like are directly contacted with the inner wall of the well or the slide rail to rub and decelerate, the hard matching between the parts can lead both to be severely abraded, and can bring huge impact to the lift car, which is not beneficial to the personal safety of passengers; and the pulley, the sliding rail and the brake component are in soft fit, so that the speed reduction effect can be achieved, the sliding rail is not easy to damage, secondary use is facilitated, impact on the lift car is small, and personal safety of passengers is guaranteed.

Furthermore, the primary brake assembly comprises a brake disc capable of moving back and forth, a brake sleeve for driving the brake disc to perform reversing operation, and a brake connecting rod for connecting the brake disc and the brake sleeve; through the arrangement of the structure, the brake disc can be matched with the pulley and the pulley rod, so that the brake disc is tightly attached to the pulley under the driving of the brake sleeve, and the effect of reducing the rotating speed of the pulley is achieved.

Furthermore, the secondary brake component comprises a take-up pulley detachably connected with the pulley lever, a transmission part with one end connected with the pulley lever, a wire storage shaft connected with the other end of the transmission part, and a wire storage wheel detachably connected with the wire storage shaft; through the arrangement of the structure, when the pulley rotates, the transmission part on the wire storage shaft can be stored on the pulley rod by the pulley rod, and when the pulley rotates for a certain number of turns, the transmission part can prevent the pulley rod from continuing to rotate after the pulley is decelerated, so that the pulley cannot rotate, the pulley is braked and braked, and hard matching is formed between the pulley and the sliding rail, so that the friction force between the pulley and the sliding rail is further enhanced, and a further deceleration effect is achieved; and because the pulley is decelerated firstly and then forms the rotation stopping fit with the transmission member, the instant pulling force to the transmission member is smaller, and the transmission member is not easy to damage.

Furthermore, the supporting structure comprises a supporting rod capable of moving back and forth, a transmission component for driving the supporting rod to move back and forth, a supporting rod groove for the supporting rod to move back and forth and a supporting frame matched with the supporting rod; through the arrangement of the structure, the car is supported and fixed under the matching of the supporting rod and the supporting frame after being decelerated by the deceleration component, so that the aim of preventing the car from falling is fulfilled, and the personal safety of passengers is guaranteed; and the bracing piece just can form the cooperation with the support frame under transmission assembly's drive to support and fixed car, so can not influence the normal operating of elevator at ordinary times.

Furthermore, the transmission assembly comprises a first transmission wheel detachably connected with the wire storage shaft, a second transmission wheel in transmission fit with the first transmission wheel, and a transmission strip in transmission fit with the second transmission wheel; through the setting of above-mentioned structure for can indirectly drive the bracing piece through the rotation of pulley and stretch out, form the mesh in order to reach support and fixed car with the support frame, need not other driving pieces, not only practiced thrift the cost, the complex stability has also been guaranteed, can not receive the influence of factors such as outage, and guaranteed that the car can be fixed again through the speed reduction of pulley earlier, play the cushioning effect, not fragile bracing piece and support frame, further guaranteed passenger's personal safety.

Furthermore, the safety structure comprises a shell capable of moving back and forth, a contraction assembly for driving the shell to move back and forth, a connecting part arranged on the shell and a push rod movably connected with the connecting part; through the arrangement of the structure, after the cable is broken, the shell can descend under the driving of the contraction assembly, so that the push rod is driven to move, the pulley is further pushed to be attached to the sliding rail, and the purpose of starting the safety device is achieved; the starting purpose is achieved through mechanical matching, the matching is tight, the transmission is stable, and the starting device cannot be interfered by factors such as power failure and the like.

Furthermore, the retraction assembly comprises an inner rod capable of moving back and forth, an outer tube used for enabling the inner rod to move back and forth and a retraction piece with one end acting on the inner rod, and the other end of the retraction piece acts on the outer tube; through the setting of above-mentioned structure for interior pole and outer tube can relative slip, thereby make the casing can descend under the effect of shrink piece, with the realization to the start-up of speed reduction structure and bearing structure, simple structure, the cooperation is stable, and the fault rate is low.

Furthermore, a reinforcing part is fixedly connected to the push rod, and the reinforcing part comprises a first reinforcing rod which is vertically arranged, a second reinforcing rod which is obliquely arranged and a third reinforcing rod which is used for connecting the first reinforcing rod and the second reinforcing rod; the connecting part is provided with a rotation stopping part matched with the push rod and the reinforcing part; through the arrangement of the structure, the effect of strengthening the structural strength of the push rod is achieved, and therefore the safety device can be ensured to be effective normally.

In conclusion, the safety device is arranged, so that the safety device can be started to prevent the car from falling after the cable is broken, and the personal safety of passengers in the car is guaranteed.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a perspective sectional view of the present invention;

FIG. 4 is an enlarged schematic view at B of FIG. 3;

FIG. 5 is a schematic cross-sectional view of the present invention;

FIG. 6 is an enlarged schematic view at C of FIG. 5;

FIG. 7 is an enlarged schematic view at D of FIG. 5;

FIG. 8 is a schematic perspective view of the safety device of the present invention when not activated (with the hoistway removed);

FIG. 9 is an enlarged schematic view at E in FIG. 8;

FIG. 10 is an enlarged schematic view at F of FIG. 8;

FIG. 11 is a perspective sectional view of the safety device of the present invention shown in the unactuated (hoistway removed) configuration;

FIG. 12 is an enlarged schematic view at G of FIG. 11;

FIG. 13 is a schematic perspective view of the safety device of the present invention in an actuated position (with the hoistway removed);

FIG. 14 is an enlarged schematic view at H of FIG. 13;

fig. 15 is an enlarged schematic view at I in fig. 13.

Detailed Description

As shown in fig. 1 to 15, a vertical elevator having a machine room includes a car 1 made of a metal material, a rope 11 made of a metal material, a hoistway 2, a safety device, and a door device; the elevator car is arranged in the shaft, two sliding rails 21 are connected with bolts in the shaft, two sliding blocks 12 are connected with the outer wall of the elevator car through bolts, and the sliding blocks can slide back and forth along the sliding rails; a first groove 212 is formed on the slide rail, and a first convex edge 211 is arranged; the sliding block is provided with a second groove 121, a second convex edge 122 is installed, the first convex edge is just embedded into the second groove, the second convex edge is just embedded into the first groove, and the first convex edge and the second convex edge are matched with each other, so that the limiting effect on the car is achieved, the vertical lifting of the car is ensured, and potential safety hazards caused by collision between the car and the inner wall of a well are avoided; the mooring rope is a steel wire rope purchased in the market, one end of the mooring rope 11 is connected with the top of the lift car, the other end of the mooring rope is connected with a power source, the power source is a traction machine purchased in the market, and the prior art is adopted, so that the detailed description is omitted; the top surface of the lift car is provided with an access hole 13, so that the maintenance of the equipment is facilitated, and the normal running of the equipment is ensured all the time; and a call button 22 is installed in the hoistway for stopping the elevator to a floor where a passenger who needs to take the elevator is located.

Specifically, the safety device comprises a speed reducing structure, a supporting structure and a safety structure; in the embodiment, two groups of speed reducing structures and two groups of supporting structures are arranged and are divided into the left side and the right side which are positioned at the top of the lift car; by installing the speed reducing structure, when the lift car falls down due to breakage of the cable, the speed reducing structure can reduce the falling speed of the lift car and prevent the lift car from falling at a high speed to generate huge impact; the supporting structure is used for supporting and fixing the car in the shaft and preventing the car from continuously sliding downwards, so that the personal safety of passengers is ensured; the car is decelerated firstly and then fixed by the supporting structure through the matching arrangement of the deceleration framework and the supporting structure, so that the speed is not too high when the car is in contact with the supporting structure, the contact is softer, the impact is smaller, and the personal safety of passengers is further ensured; the safety structure plays a role in controlling the starting of the speed reducing structure and the supporting structure, does not need electrical control, can be automatically started under the driving of a mechanical structure when the cable is broken, is not influenced by factors such as power failure and the like, and is more stable, safe and reliable.

Specifically, the safety structure comprises a shell 51, a contraction component, a connecting part 52 and a push rod 53; the shell is connected to the cable 11, a cable channel for the cable to pass through is formed in the shell, and when the elevator normally operates, the shell is lifted under the action of the cable and is away from the top surface of the car 1 by a certain distance; the connecting part is welded on the side surface of the shell, and one end of the push rod is hinged with the connecting part; when the shell is pulled to ascend by the cable, one end of the push rod connected with the shell ascends along with the shell, the other end of the push rod is contacted with the lift car, and the push rod is obliquely erected on the lift car, so that the push rod is contracted, and the influence of the push rod on the normal ascending and descending of the elevator is avoided; and after the hawser breaks, the casing loses support and descends under the effect of shrink subassembly, pastes mutually with the car top surface to the one end that drives push rod and casing and link to each other descends, promotes the other end of push rod and outwards stretches out simultaneously.

Specifically, the retraction assembly comprises an inner rod 54, an outer tube 55 and a retraction member 56; the outer pipe is arranged in the shell and is in threaded connection with the shell; the inner rod is arranged in the outer tube and can slide back and forth along the inner wall of the outer tube, and the bottom end of the inner rod is connected with the top end of the lift car through a bolt; the contraction part is arranged in the outer tube, one end of the contraction part is connected with the top end of the inner rod, the other end of the contraction part is connected with the bottom end of the inner side of the outer tube, and the contraction part is a spring; after the cable is broken, the inner rod can slide into the shell under the action of the elastic force of the spring, so that the shell is driven to descend to the top surface of the lift car; in order to prevent the mooring rope from being accumulated between the shell and the car and causing the shell to be incapable of clinging to the surface of the car to influence the starting or running of the safety device, the bottom of the shell is provided with a containing groove 511 for containing the mooring rope, so that the shell is prevented from pressing the mooring rope, and the normal starting and running of the safety structure are ensured.

Specifically, the speed reducing structure comprises a pulley 31, a pulley lever 32, a primary brake component and a secondary brake component; the pulley is arranged on the pulley rod, is in key connection with the pulley rod and is opposite to the sliding rail 21; the pulley lever is arranged at the other end of the push rod 53 and is connected with a push rod bearing; the push rod is provided with a pulley groove 531, and the pulley is positioned in the pulley groove; when the elevator normally runs, the pulley can be contracted on the elevator car under the action of the push rod, so that the normal running of the elevator cannot be influenced, and after the cable is broken, the pulley can be pushed out under the action of the push rod and is tightly attached to the sliding rail, so that the effect of starting the speed reducing structure is achieved; the friction force between the pulley and the sliding rail can also provide an upward force for one end, connected with the pulley, of the push rod, so that the push rod has the tendency of overturning, the push rod and the shell are attached to the upper surface of the car to play a role in supporting and fixing the pulley, meanwhile, the push rod and the shell are attached to the upper surface of the car to also enable the push rod to provide pressure for the pulley, the pulley is attached to the sliding rail, the matching between the pulley and the sliding rail is guaranteed, and the pulley, the sliding rail, the push rod and the shell are mutually matched and supplement each other; and the first-stage brake assembly and the second-stage brake assembly are matched with the pulley and the sliding rail to play a role in reducing the speed of the pulley, so that the aim of reducing the falling speed of the car and even stopping the car is fulfilled by the friction force between the pulley and the sliding rail, and the personal safety of passengers is guaranteed.

Specifically, the primary brake component comprises a brake disc 34, a brake sleeve 35 and a brake connecting rod 36; the brake discs are arranged on the pulley rods 32, and in the embodiment, two brake discs are arranged on one pulley rod, are respectively positioned on two sides of the pulley, are positioned in the pulley grooves and can slide back and forth along the push rod; the brake sleeves are arranged on the pulley levers, in the embodiment, one pulley lever is provided with two brake sleeves which are respectively positioned at two sides of the push rod, the brake sleeves are provided with internal threads, and the pulley lever is provided with external threads, so that the brake sleeves and the pulley levers form threaded fit; one end of the brake connecting rod is connected with the brake disc bolt, the other end of the brake connecting rod is connected with the brake sleeve bolt, and the push rod is provided with a connecting rod hole for the brake connecting rod to pass through; in the embodiment, 6 brake connecting rods are connected between the brake disc and the brake sleeve, 6 connecting rod holes are correspondingly formed in the push rod, and the brake connecting rods can slide back and forth along the connecting rod holes; when the pulley rod is driven by the pulley to rotate, a rotating trend is given to the brake sleeve, the brake sleeve cannot rotate due to the matching between the brake connecting rod and the connecting rod hole, and the brake sleeve can only move towards the direction close to the push rod under the driving of the pulley rod, so that the brake connecting rod is pushed to move, the brake disc is driven to move towards the direction close to the pulley, the brake disc is in contact with the pulley until the brake disc is attached to the pulley, a brake pad made of rubber materials is arranged on the brake disc, and the friction force between the brake pad and the pulley plays a role in decelerating the pulley; and because the brake disc is gradually connected and tightly attached to the pulley, the friction force is gradually increased, so that the speed of the pulley is gradually reduced, the brake disc and the pulley are in soft fit, the impact of gradual speed reduction on the lift car is small, the personal safety of passengers is facilitated, and the pulley lever and the push rod are not easy to damage.

In order to further ensure the strength of the push rod, a reinforcing part 57 is welded to the push rod 53, and the reinforcing part includes a first reinforcing rod 571, a second reinforcing rod 572 and a third reinforcing rod 573; one end of the first reinforcing rod is welded on one side of the push rod close to the shell 51, and the first reinforcing rod is vertically arranged; one end of the second reinforcing rod is welded with the middle part of the push rod, and the other end of the second reinforcing rod is welded with the other end of the first reinforcing rod, so that the second reinforcing rod is installed in an inclined state; one end of the third reinforcing rod is welded with the middle part of the second reinforcing rod, and the other end of the third reinforcing rod is welded at the joint of the first reinforcing rod and the push rod; the function of enhancing the structural strength of the push rod is achieved; in order to ensure that the pulley can be tightly attached to the sliding rail, a rotation stopping part 521 is arranged on the connecting part 52, so that the push rod cannot rotate any more after rotating to a position parallel to the upper surface of the car, and at the moment, the first reinforcing rod is also tightly attached to the rotation stopping part to play a role in double limiting of the push rod, so that the normal operation of the speed reducing structure is ensured; and a rotation stopping block 574 is welded on the first reinforcing rod, and when the pulley is tightly attached to the sliding rail, the rotation stopping block is tightly attached to the outer surface of the shell to play a further limiting role, so that the push rod is prevented from upwards overturning, the pulley is always tightly attached to the sliding rail, the normal work of the speed reducing structure is ensured, and the personal safety of passengers is ensured.

Specifically, the secondary brake component comprises a take-up pulley 37, a transmission piece 38, a wire storage shaft 39 and a wire storage wheel 30; the transmission part is a steel wire rope purchased in the market; one end of the transmission part is connected with the pulley lever, and the other end of the transmission part is connected with the appearance shaft; when the elevator normally operates, the wire rope is wound on the wire storage shaft, and when the pulley is in contact with the slide rail and rotates, the pulley shaft rotates along with the pulley, so that the wire rope is wound up and stored on the pulley lever 32; in order to prevent the steel wire rope from scattering, a wire storage wheel is connected to the wire storage shaft in a key mode, and a wire take-up wheel is connected to the pulley lever in a key mode; in the embodiment, the accelerating structure comprises two groups of secondary brake components, each secondary brake component is provided with two wire storage wheels and two wire take-up wheels which are respectively arranged on two sides of a steel wire rope, so that the steel wire rope is fixed between two wheels, and the steel wire rope is prevented from being scattered; when the first-stage brake assembly decelerates the lift car, the pulley rod can completely wind the steel wire rope on the wire storage shaft, the steel wire rope can stop the pulley rod to stop rotating, the rotation stopping effect on the pulley rod is achieved, the pulley and the sliding rail form hard fit, the deceleration effect of the pulley is further enhanced, and the effect of further slowing down the dropping speed of the lift car is achieved; and because the car is decelerated in advance by the primary brake assembly, when the steel wire rope prevents the pulley rod from rotating, the instant pulling force of the pulley rod on the steel wire rope cannot be so large as to break the steel wire rope, so that the normal operation of the deceleration structure is ensured, a better deceleration effect is achieved, and the personal safety of passengers is further ensured.

Specifically, the supporting structure comprises a supporting rod 41 made of a metal material, a transmission assembly, a supporting rod groove 42 and a supporting frame 43 made of a cement material; the supporting rod is arranged at the top of the lift car 1 and is fixed by a limiting strip 49, a supporting rod groove is formed in the limiting strip, the two sides of the supporting rod extend outwards to form a supporting rod convex edge 411, and the supporting rod convex edge is embedded into the supporting rod groove, so that the supporting rod convex edge can slide back and forth along the supporting rod groove, and the supporting rod and the limiting strip are in sliding fit; when the elevator normally operated, the bracing piece was accomodate at car top, and after 11 fracture backs of hawser, the bracing piece can stretch out car top under drive assembly's drive promptly, cooperatees with the support frame of installing in the well, supports and fixes the car on the support frame, plays the effect that prevents the car tenesmus, guarantees passenger's personal safety.

Specifically, the transmission assembly comprises a first transmission wheel 44, a second transmission wheel 45 and a transmission strip 46; the transmission wheels are all gears, and the transmission bars are racks; the first driving wheel key is connected to the spool, the second driving wheel is meshed with the first driving wheel, the second driving wheel key is connected to the transmission shaft, and the transmission shaft is in bearing connection with the shell 51; the transmission strip is arranged on the support rod and can be meshed with the second transmission wheel; when the wire storage shaft is driven by the transmission part to rotate, the first transmission wheel can be driven to rotate, the rotation of the first transmission wheel can drive the second transmission wheel to rotate, at the moment, the shell is tightly attached to the upper surface of the lift car, and the second transmission wheel is meshed with the transmission strip, so that the second transmission wheel can drive the transmission strip to move, the support rod is driven to slide towards the outer side of the lift car, and after the lift car falls to a preset position, the support rod can be in contact with the support frame to fix the lift car on the support frame, so that the personal safety of passengers is guaranteed; if the supporting rod is directly matched with the supporting frame to prevent the car from falling down, the collision impact force between the supporting rod and the supporting frame is too large, if the effect of preventing the car from falling down is to be achieved, the requirement on the strength of the supporting rod and the strength of the supporting frame are too high, and the collision can also cause damage to the supporting rod and the supporting frame; too large collision impact can also operate and impact passengers in the lift car, so that the personal safety of the passengers is not facilitated; the falling speed of the car is firstly slowed down through the speed reducing effect of the speed reducing structure, and then the car is supported through the supporting structure, so that the impact force between the supporting rod and the supporting frame is small, the supporting rod and the supporting frame are not easy to damage, meanwhile, the impact on passengers in the car is small, and the personal safety of the passengers is favorably ensured; and through the effect of second grade brake subassembly and transmission assembly, link together reduction structure and bearing structure for both form the transmission cooperation, need not extra driving piece, when practicing thrift the cost, two guarantee the cooperation between reduction framework and the bearing structure, ensured passenger's personal safety.

In order to further reduce the impact force, a shock absorbing structure is mounted on the supporting frame 43, and the shock absorbing structure comprises a supporting block 61, a buffer groove 62 and a shock absorbing member 63, wherein the shock absorbing member is a spring; the buffer slot is arranged on the upper surface of the support frame, and the support block is arranged in the buffer slot and can move up and down along the buffer slot; the damping piece is arranged in the buffer groove, one end of the damping piece acts on the bottom surface of the buffer groove, and the other end of the damping piece acts on the bottom surface of the supporting block; thereby make when the car tenesmus, bracing piece 41 descends the back can just in time contact with the tray, and the bracing piece extrudees the tray for tray compression spring, and the spring then gives an ascending elasticity of tray, offsets the impact force that the bracing piece descends, thereby makes to form soft cooperation between bracing piece and the support frame, reduces the dynamics of collision between the two, makes the impact force car that the car received, thereby has guaranteed the personal safety of the passenger in the car.

In order to prevent the support block from falling off the buffer groove, a first anti-falling convex edge 611 is arranged on the support block, and a second anti-falling convex edge 621 is arranged on the buffer groove, so that the first anti-falling convex edge is matched with the second anti-falling convex edge to limit the support block; in order to ensure that the support block and the support rod can form stable matching, a first guide inclined plane 612, a second guide inclined plane 613 and a bearing plane 614 are arranged on the support block, and the first guide inclined plane and the second guide inclined plane are symmetrical and arranged on two sides of the bearing plane; the supporting plane is matched with the bottom surface of the supporting rod, so that the supporting rod can be attached to the supporting plane when descending, and the supporting rod can be stably supported; and if the skew bearing plane of bracing piece bottom surface, then the direction inclined plane can play the guide effect, makes the bracing piece slide again in the bearing plane to guaranteed to form stable cooperation all the time between bracing piece and the tray, played better shock attenuation cushioning effect, and then guaranteed passenger's personal safety.

Specifically, the ladder door device comprises an inner door structure, an outer door structure and a synchronous motion structure; the inner door structure comprises an inner door plate 71, a driving assembly and an inner chute 72; the inner door plates are arranged in the inner sliding grooves and can slide back and forth along the inner sliding grooves, the inner sliding grooves are formed in the lift car, and the two inner door plates respectively slide back and forth on the left side and the right side, so that the inner door plates can open and close the lift car; the driving component plays a role in driving the inner door panel to slide back and forth, and comprises a first transmission gear 73, a second transmission gear 74, a third transmission gear 75, a fourth transmission gear 76, a fifth transmission gear 77 and a driving piece 78; the driving member is a motor purchased in the market, which is the prior art, and therefore, the details are not described herein; the motor is arranged at the top of the lift car and is connected with a lift car bolt, the fifth transmission gear is connected to an output shaft of the motor in a key mode, the fourth transmission gear and the third transmission gear are connected to the same gear shaft in a key mode, and the gear shaft is connected with a lift car bearing through a support; the fourth transmission gear is meshed with the fifth transmission gear; the second transmission gear and the first transmission gear are connected to the same gear shaft in a key mode, the gear shaft is connected with the car bearing through a support, and the second transmission gear and the third transmission gear are in transmission connection through a chain; the rack is installed on the upper surface of the inner door plate, and the first transmission gear is meshed with the rack, so that the inner door plate can be driven to move back and forth through the motor, the structure is simple, the matching is stable, and the failure rate is low.

Specifically, the outer door structure comprises an outer door panel 81, an outer sliding groove 82, a locking block 83 and a power part 84; the power part is a cylinder purchased in the market, which is the prior art, and therefore, the details are not described herein; the outer sliding chute is arranged in the shaft and is positioned at an opening of the shaft corresponding to the car; the outer door plate is arranged in the outer sliding groove and can slide back and forth along the outer sliding groove; the locking block is connected with an output shaft of the cylinder and positioned on two sides of the outer door plate; in order to enable the inner door plate and the outer door plate to be opened and closed simultaneously, a synchronous moving structure is installed, and comprises a synchronous sliding block 85, a synchronous sliding groove 86 and a sliding block channel 87; synchronous slider bolted connection is on interior door plant, and synchronous spout is seted up on outer door plant, and the slider passageway is seted up on outer spout, and in synchronous slider can penetrate synchronous spout from the slider passageway of one side, wear out from the slider passageway of opposite side again.

In order to control the opening and closing of the lifting door, a controller is installed, and the controller is a commercially available porphyry ADAM-4500 controller, which is the prior art and therefore is not described in detail herein; when a user presses a calling button, a signal is given to the controller, the controller controls the traction machine to start, the lift car is driven to come to a corresponding floor, and the synchronous sliding block is embedded into the synchronous sliding groove; the controller controls the cylinder to start again, the locking block is driven to retract into a locking block groove formed in the well, the controller controls the motor to start again after the locking block reaches a preset position, the motor can drive the inner door plate to slide towards two sides, and at the moment, the inner door plate can drive the outer door plate to slide towards two sides together due to the fact that the synchronous sliding block and the synchronous sliding groove are in inserting fit, and the lift car and the entrance and exit of the well are opened; when the switch-off is needed, the controller only needs to reversely control all the components to be started.

Claims

1. A vertical elevator with a machine room comprises a car (1), a cable (11) arranged on the car (1) and a well (2) matched with the car (1); a sliding rail (21) is arranged on the well (2); the method is characterized in that: the car (1) is provided with a safety device for preventing the car (1) from falling after the mooring rope (11) is broken;

the safety device comprises a deceleration structure for slowing down the falling speed of the car (1), a supporting structure for supporting and fixing the car (1) and a safety structure for controlling the deceleration structure and the supporting structure to be started;

the safety structure comprises a shell (51) capable of moving back and forth, a contraction assembly used for driving the shell (51) to move back and forth, a connecting part (52) arranged on the shell (51) and a push rod (53) movably connected with the connecting part (52).

2. A vertical lift elevator with a machine room according to claim 1, characterized in that: the speed reducing structure comprises a pulley (31) capable of moving back and forth, a pulley lever (32) in rotation stopping fit with the pulley (31), a primary brake component matched with the pulley lever (32) and a secondary brake component matched with the primary brake component.

3. A vertical lift elevator with a machine room according to claim 2, characterized in that: the primary brake assembly comprises a brake disc (34) capable of moving back and forth, a brake sleeve (35) used for driving the brake disc (34) to work back and forth, and a brake connecting rod (36) used for connecting the brake disc (34) and the brake sleeve (35).

4. A vertical lift elevator with a machine room according to claim 2, characterized in that: the secondary brake component comprises a take-up pulley (37) detachably connected with the pulley lever (32), a transmission piece (38) with one end connected with the pulley lever (32), a wire storage shaft (39) connected with the other end of the transmission piece (38), and a wire storage wheel (30) detachably connected with the wire storage shaft (39).

5. A vertical lift elevator with a machine room according to claim 4, characterized in that: the supporting structure comprises a supporting rod (41) capable of moving back and forth, a transmission assembly for driving the supporting rod (41) to move back and forth, a supporting rod groove (42) for the supporting rod (41) to move back and forth and a supporting frame (43) matched with the supporting rod (41).

6. A vertical lift elevator with a machine room according to claim 5, characterized in that: the transmission assembly comprises a first transmission wheel (44) detachably connected with the wire storage shaft (39), a second transmission wheel (45) in transmission fit with the first transmission wheel (44), and a transmission strip (46) in transmission fit with the second transmission wheel (45).

7. A vertical lift elevator with a machine room according to claim 1, characterized in that: the retraction assembly comprises an inner rod (54) capable of moving back and forth, an outer tube (55) used for enabling the inner rod (54) to move back and forth and a retraction piece (56) with one end acting on the inner rod (54), and the other end of the retraction piece (56) acts on the outer tube (55).

8. A vertical lift elevator with a machine room according to claim 1, characterized in that: a reinforcing part (57) is fixedly connected to the push rod (53), and the reinforcing part (57) comprises a first reinforcing rod (571) which is vertically arranged, a second reinforcing rod (572) which is obliquely arranged and a third reinforcing rod (573) which is used for connecting the first reinforcing rod (571) and the second reinforcing rod (572); the connecting part (52) is provided with a rotation stopping part (521) which is matched with the push rod (53) and the reinforcing part (57).