CN221070580U - Improved lifting mechanism - Google Patents

Abstract

The utility model relates to the technical field of elevators and discloses an improved lifting mechanism, which comprises an elevator, a supporting table arranged on the bottom surface of the elevator, a traction ladder arranged at the rear of the elevator and in sliding connection with the supporting table, a driving device arranged on the rear wall of the elevator, a first locking structure for preventing sudden faults when the elevator ascends, a second locking structure for preventing sudden faults when the elevator descends, and a swinging structure for controlling the first locking structure and the second locking structure to contact the traction ladder. The lifting device is fixedly arranged at the rear of the supporting platform through the driving motor, and the supporting platform is arranged on the ground, so that the lifting device is more economical and energy-saving because the driving motor is arranged on the bottom surface and does not need to be lifted by the lifter or too long cables as compared with a large number of cables because the traditional lifting device motor and the lifting platform are lifted together.

Description

Improved lifting mechanism

Technical Field

The invention relates to the technical field of elevators, in particular to an improved lifting mechanism.

Background

The tower lifter is vertical transport equipment and consists of a vertical tower and a carrying platform, wherein the platform moves up and down in the tower to provide vertical transport function.

The tower drum elevator disclosed by the Chinese patent publication No. CN 207713215U comprises an elevator body, a power device, a transmission device, a traction braking device, an elevating platform, a safety crawling ladder and a guide rail, and further comprises a speed limiting device, an elevating platform guiding device and a limiting safety device, so that the operation safety of the elevator is ensured, and the speed limiting device comprises a speed limiter and a speed limiting rope guiding wheel. When the movement speed of the lifting platform equipment exceeds the limit or a traction rope connected with the lifting platform is broken, the lifting platform cannot be braked timely, so that safety accidents are caused. The elevator of the application is provided with a bidirectional speed limiter device, thereby effectively avoiding accidents.

The foregoing technical solution limits the elevator by means of a bidirectional speed limiter to avoid too fast movement speed caused by damage to the elevator, but the technical solution does not disclose in detail the parts constituting the limiting safety device, so that it is not clear to the skilled person how to brake when the elevator is overspeed, and at the same time the technical solution has only a single speed limiting structure, and once the elevator moves down too fast and adds own weight, the speed limiting structure will be damaged, and there is no safety measure, and in particular the power device used by the elevator is arranged on the elevator body, which results in that the elevator is powered by a cable, and the cable power supply requires an extra large amount of cables and a transceiver cable reel, and at the same time the safety risk brought by cable out of the slot is higher in the cable transceiving process, and at the same time the motor required for heavy lifting of the elevator car naturally requires a high torque motor, so the requirement on the cable is also high.

Disclosure of Invention

(One) solving the technical problems

Aiming at the defects of the prior art, the invention provides an improved lifting mechanism which has the advantages that the safety of a non-trailing cable is higher when the lifting mechanism is driven, two sets of locking structures prevent the lifting mechanism from being crashed due to the fact that one set of locking structures is damaged, the safety of freely switching the two sets of locking structures is higher, and the like, and solves the technical problems.

Technical proposal

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an improve elevating system, includes the lift, sets up in the saddle of lift bottom surface, sets up in the lift rear and the traction ladder of its sliding connection, installs in the drive arrangement of lift back wall, lift back wall top movable mounting is used for preventing the sudden failure's when rising locking structure No. one, lift back wall bottom movable mounting is used for preventing the sudden failure's when descending locking structure No. two, lift back wall middle-end installation is used for controlling locking structure No. one and No. two locking structure contact traction ladder's swing structure, drive arrangement is including installing at the saddle rear end and being located the driving motor at the lift rear, the rim plate is connected to the driving motor output, the rim plate twines the steel cable, the steel cable upwards extends and passes the fixed pulley group that sets up at the traction ladder top, and the tail end connection lift top, the steel cable twines behind the rim plate downwards and passes the final fixed connection lift bottom of fixed pulley, forms the closed loop.

Preferably, the anti-disengaging mechanism for wrapping the traction ladder is arranged at the top of the rear wall of the elevator, the anti-disengaging mechanism is U-shaped, the bent parts at the two ends of the anti-disengaging mechanism are in sliding connection with the outer side of the traction ladder, and the anti-disengaging mechanism is fixedly connected to the top of the rear wall of the elevator through screws or welding.

Preferably, the first locking structure comprises a fixed plate symmetrically arranged at the top of the rear wall of the elevator and positioned below the anti-disengaging mechanism, a rolling wheel in rolling friction with the traction ladder is arranged on the side edge of the fixed plate, a one-way bearing is connected to the inner ring of the rolling wheel, the inner shaft of the one-way bearing penetrates through the fixed plate to be connected with a second wheel disc, and the wheel surface of the second wheel disc far away from one side of the fixed plate is connected with a crank connecting rod structure for converting self circular motion into linear motion.

Preferably, the crank connecting rod structure comprises a chute symmetrically arranged on the outer surface of the fixed plate, the inner side of the chute is in sliding connection with a sliding rod, the tail end of the sliding rod is connected with a limiting rod parallel to the second wheel disc, a travel groove penetrating through the middle end of the limiting rod is formed, the tail end of the travel groove is fixedly connected with the second sliding rod on the second wheel disc wheel face, the head end of the second sliding rod is connected with a clamping plate parallel to the limiting rod, and the upper end and the lower end of the clamping plate are connected with a locking rod.

Preferably, the second locking structure comprises a second fixing plate arranged at the bottom of the rear wall of the elevator, the position of the second fixing plate is symmetrical to the fixing plate, the second fixing plate is fixedly connected to the rear wall of the elevator through bolts or welding, the center of the side edge of the second fixing plate is rotationally connected with a roller, and the axis of the roller penetrates through the second fixing plate and is connected with a rotary table arranged on the other side of the second fixing plate in a tail end mode.

Preferably, the carousel is kept away from No. two fixed plates one side and is installed crank connecting rod structure equally, crank connecting rod structure is used for turning into rectilinear motion's output installation piston rod with circular motion, the sleeve is pegged graft at piston rod top, sleeve opening is down with piston rod piston connection, the gas leakage hole is seted up to sleeve lateral wall middle-end, the gas leakage hole runs through sleeve lateral wall and communicates with its inboard, sleeve surface top is through bolt or welded fastening in No. two and fixed plate lateral walls.

Preferably, the air pressure sensor is installed at the inside top of the sleeve, the sensing end of the air pressure sensor faces the opening of the sleeve, the output end of the air pressure sensor is connected with a single chip microcomputer arranged at the top of the outer surface of the sleeve through a wire, the output end of the single chip microcomputer is connected with an electric push rod, and the output end of the electric push rod faces downwards and is located on a crank connecting rod structure arranged on the wheel surface of the rotary disc.

Preferably, the fixed plate and the bottom of the second fixed plate are further provided with a moving mechanism, the moving mechanism comprises clamping blocks symmetrically arranged at two ends of the bottom of the fixed plate and the bottom of the second fixed plate, the side walls of the clamping blocks are provided with sliding ports penetrating through the side walls of the clamping blocks, the inner sides of the sliding ports are in sliding connection with sliding blocks, and the tail ends of the sliding blocks penetrate through the side walls of the sliding ports to be fixedly connected with the fixed plate and the side walls of the second fixed plate.

Preferably, the swing structure comprises a positioning block fixedly mounted at the center of the rear wall of the elevator, a gear motor is mounted on the side wall of the positioning block, the output end of the gear motor is connected with a poking rod, the top of the poking rod is connected with the bottom of the fixing plate, and the bottom of the poking rod is connected with the top surface of the second fixing plate.

Preferably, the adjusting structure is arranged at the joint of the poking rod and the fixing plate II, the adjusting structure comprises a roller which is rotationally connected with the head end and the tail end of the poking rod, the roller is connected with a sliding rail in a sliding way, and the head end and the tail end of the sliding rail are fixedly connected with the bottom surface of the fixing plate II and the top surface of the fixing plate II respectively.

Compared with the prior art, the invention provides an improved lifting mechanism, which has the following beneficial effects:

1. Compared with the prior lifting equipment, which is provided with a motor and a lifting table which are arranged on the ground, the lifting equipment is characterized in that the driving motor is fixedly arranged behind the supporting table, and the supporting table is arranged on the ground, so that a large number of cables are required as the motor and the lifting table are lifted together.

2. When the number locking structure is close to the traction ladder, the elevator cannot be lifted or moved downwards due to sudden faults in the ascending process, at the moment, the rolling wheel can be reversed and drives the one-way bearing to be reversed, at the moment, the inner ring of the one-way bearing is synchronously driven to rotate so as to drive the wheel disc fixedly connected with the one-way bearing to rotate, once the wheel disc rotates to drive the crank connecting rod structure to rotate so that the sliding rod drives the locking rod to extend towards the traction ladder and is clamped into the cross rod part in the center of the traction ladder so as to generate clamping, and the clamping of the crank connecting rod structure and the wheel disc is utilized to extend to the crank connecting rod structure and the wheel disc, once the wheel disc cannot rotate, the one-way bearing and the rolling wheel are synchronously driven to be locked together, and at the moment, the elevator is suddenly stopped; when the second locking structure is close to the traction ladder, the piston rod is constant in motion due to the fact that the lifting machine descends at a constant speed, once the lifting machine driving device is damaged, the descending speed cannot be controlled, the high-speed rotating idler wheel drives the piston rod to move rapidly under the action of the crank connecting rod structure, the corresponding air pressure of the piston moving speed is increased, once the air pressure sensor senses air pressure data exceeding a constant air pressure value, an electric signal is sent to the singlechip, the singlechip receives the signal and then starts the electric push rod to extend downwards to prop against the crank connecting rod structure arranged at the second locking structure so as to correspondingly brake the idler wheel, the lifting machine stops descending, braking is completed, and the beneficial effects that one set of the two sets of locking structures is prevented from being damaged to cause the crash of the lifting machine are achieved.

3. According to the invention, the output end of the speed reducing motor is started to drive the toggle rod to rotate, and the first locking structure or the second locking structure at the head end and the tail end are driven to be close to the traction ladder along with the forward or backward movement of the toggle rod, so that the random switching between the first locking structure and the second locking structure is completed, and the beneficial effect of higher safety of the free switching of the two sets of locking structures is achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic rear view of the elevator structure of the present invention;

FIG. 3 is a schematic side view of a first locking structure and a second locking structure according to the present invention;

FIG. 4 is a schematic diagram of the other side of the first and second locking structures of the present invention;

FIG. 5 is an enlarged schematic view of a first locking structure according to the present invention;

Fig. 6 is an enlarged schematic view of a second locking structure of the present invention.

Wherein: 1. a lifter; 2. traction ladder; 201. an anti-drop mechanism; 3. a first locking structure; 301. a fixing plate; 302. a rolling wheel; 303. a one-way bearing; 304. a second wheel disc; 4. a second locking structure; 5. a swinging structure; 501. a positioning block; 502. a speed reducing motor; 503. a toggle rod; 6. a chute; 601. a slide bar; 602. a limit rod; 603. a travel groove; 604. a second slide bar; 605. a clamping plate; 606. a locking lever; 7. a second fixing plate; 8. a roller; 801. a turntable; 802. a piston rod; 9. a sleeve; 901. a leakage hole; 902. an air pressure sensor; 903. a single chip microcomputer; 904. an electric push rod; 10. a clamping block; 11. a sliding port; 12. a slide block; 13. a roller; 14. a slide rail; 151. a driving motor; 152. a wheel disc; 153. a fixed pulley block; 154. and (3) fixing wheels.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-6, an improved lifting mechanism comprises a lifting machine 1, a supporting table arranged on the bottom surface of the lifting machine 1, a traction ladder 2 arranged at the rear end of the lifting machine 1 and in sliding connection with the supporting table, a driving device arranged on the rear wall of the lifting machine 1, a first locking structure 3 which is movably arranged at the top of the rear wall of the lifting machine 1 and used for preventing sudden faults when the lifting machine 1 ascends, a second locking structure 4 which is movably arranged at the bottom of the rear wall of the lifting machine 1 and used for preventing sudden faults when the lifting machine 1 descends, a swinging structure 5 which is used for controlling the first locking structure 3 and the second locking structure 4 to contact the traction ladder 2 is arranged at the middle end of the rear wall of the lifting machine 1, the driving device comprises a driving motor 151 which is arranged at the rear end of the supporting table and is positioned at the rear end of the lifting machine 1, an output end of the driving motor 151 is connected with a wheel disc 152, the steel rope is wound on the wheel disc 152, the steel rope extends upwards and passes through a fixed pulley block 153 arranged at the top of the traction ladder 2, the tail end is connected with the top of the lifting machine 1, and finally the steel rope is wound downwards around the wheel 152 and passes through the fixed pulley block 153 to the fixed pulley 154 to the bottom of the lifting machine 1 to form a closed loop.

Further, the driving motor 151 is fixedly installed at the rear of the supporting platform, the supporting platform is installed on the ground, the corresponding driving motor 151 is also arranged on the ground, compared with the situation that a large amount of cables are needed due to the fact that a traditional lifting equipment motor and the lifting platform are lifted together, the driving motor 151 is arranged on the bottom surface and does not need to lift together through the lifting device 1, too long cables are not needed, economy and energy saving are achieved, meanwhile, the driving motor 151 is started to drive the wheel disc 152 connected with the output end to rotate, when the wheel disc 152 rotates positively, the steel rope is pulled to move downwards, at the moment, the tail end of the steel rope converts moving friction into rolling friction with the fixed pulley block 153 under the action of the fixed pulley block 153, the steel rope moves downwards along with the fixed pulley block 153, meanwhile, the lifting device 1 is lifted synchronously, corresponding downwards redundant steel rope parts are lifted along with the lifting device 1 and pass through the fixed pulley 154, as the two ends of the steel rope are respectively connected to the upper end and the lower end of the lifting device 1, the steel rope passes through the fixed pulley block and the wheel 152 to form a closed loop pulley mechanism, further, the driving motor drives the wheel disc 152 to rotate reversely, and then the fixed pulley 154 is pulled reversely, the steel rope is pulled downwards, and the steel rope is moved downwards under the action of the fixed pulley mechanism, and the closed loop mechanism is lowered, and the lifting device is enabled.

Further, the driving device is the driving of the existing elevator 1, and the principle of the driving device in the application is consistent with that of the document cited in the background art, which is the prior art, so the application is not more described herein, the elevator 1 is driven to lift by the driving device, and the anti-falling mechanism 201 synchronously lifts the attached traction ladder 2 while the elevator 1 lifts, so that the elevator 1 is separated from the traction ladder 2 due to the collapse of the first locking structure 3 or the second locking structure 4 in the locking elevator is ensured.

Further, the first locking structure 3 or the second locking structure 4 is switched by driving the swinging structure to enable the switched locking structure to contact the traction ladder 2 and lock the failed elevator 1, the output end of the speed reducing motor 502 is started to drive the toggle rod 503 to rotate, wherein the control end of the speed reducing motor 502 is arranged inside the elevator 1 and is manually controlled by a passenger, the first locking structure 3 or the second locking structure 4 at the head end and the tail end is driven to approach the traction ladder 2 along with the forward or backward movement of the toggle rod 503, meanwhile, in order to prevent structural damage caused by the forced driving of the first locking structure 3 or the second locking structure 4 by the toggle rod 503, the roller 13 is driven to synchronously move when the toggle rod 503 rotates forward or backward, the roller 13 moves relatively on the sliding rail 14 when moving in an arc, as can be seen from fig. 2 of the specification, the sliding rail 14 is a rectangular body with a longer allowance space, so that the sliding rail 14 converts the circular motion of the toggle rod 503 into linear motion, thereby driving the first locking structure 3 or the second locking structure 4 to approach the traction ladder 2, and further for enabling the first locking structure 3 and the second locking structure 4 to be smoother when moving and more stable when contacting the traction ladder 2, a moving mechanism is arranged at the bottoms of the fixing plate 301 and the second fixing plate 7, and the sliding block 12 is driven to move when moving through the fixing plate 301 and the second fixing plate 7, so that the sliding block 12 moves inside the sliding port 11 to be stable, and the clamping block 10 is fixedly connected to the rear wall of the lifter 1 due to the fact that the sliding port 11 is opened on the surface of the clamping block 10, and therefore the fixing plate 301 and the second fixing plate 7 are both moving and keep firm.

Further, when the first locking structure 3 is close to the traction ladder 2, friction is generated by contact between the rolling wheel 302 and the traction ladder 2, and the rolling wheel 2 rotates, because the inner side of the rolling wheel 302 is provided with the one-way bearing 303, and the one-way bearing 303 can rotate upwards, the rolling wheel 302 cannot influence the one-way bearing 303 in rotation, once the elevator 1 fails to raise or move downwards in the middle of rising, the rolling wheel 302 can reverse and drive the one-way bearing 303 to reverse, at the moment, the inner ring of the one-way bearing 303 is synchronously driven to rotate, so that the second wheel disc 304 fixedly connected with the one-way bearing 303 is driven to rotate, once the second wheel disc 304 rotates to drive the crank connecting rod structure to rotate, the second slide rod 604 drives the locking rod 606 to extend towards the traction ladder 2, and is clamped into a cross rod part in the center of the traction ladder 2, and the clamping connection of the two is utilized to extend to the crank connecting rod structure and the second wheel disc 304, once the second wheel disc 304 cannot rotate, the one-way bearing 303 is synchronously driven to lock together with the rolling wheel 302, and at the moment, the elevator 1 is stopped in an emergency.

Further, the first locking structure 3 is locked when the unidirectional bearing 303 rotates downwards, so that only the lifter 1 can be used in the ascending process, the lifter 1 needs to be actively switched to the second locking structure 4 when descending, and once the second locking structure 4 is damaged when the lifter 1 descends, the lifter is manually switched to the first locking structure 3 to carry out emergency stop.

Further, when the elevator is switched to the second locking structure 4, the roller 8 connected with the second fixing plate 7 contacts the traction ladder 2 and generates rolling friction to rotate, because the axle center of the roller 8 passes through the second fixing plate 7 and is connected with the rotary table 801, the roller 8 drives the rotary table 801 to rotate simultaneously when rotating, the rotary table 801 rotates and is converted into vertical up-down linear reciprocating motion by the crank connecting rod structure, so that the piston rod 802 continuously performs up-down telescopic motion, the telescopic motion is performed in the sleeve 9 along with the uniform speed of the piston rod 802, air pressure in the sleeve is changed, partial air entering the sleeve by the piston rod 802 can be discharged from the air leakage hole 901 to avoid high-pressure crushing the air pressure sensor 902, and as the elevator 1 descends, the piston rod 802 is constant in motion, once the elevator 1 driving device damages the descending speed uncontrollably, the roller 8 rapidly rotates under the action of the crank connecting rod structure, the air pressure corresponding to the piston rod 802 is enhanced, once the air pressure sensor 902 senses the data electrical signal exceeding the constant value and the air pressure in the sleeve 9, the electric single-chip microcomputer 903 is sent out, the electric single-chip microcomputer is stopped, and the elevator is stopped at the position of the corresponding crank connecting rod structure, and the elevator is stopped after the elevator 1 is locked, and the elevator structure is completely down.

When the elevator traction device is used, the first locking structure 3 or the second locking structure 4 is switched through driving the swinging structure to enable the switched locking structure to be in contact with the traction ladder 2 and lock the elevator 1 with faults, the output end of the elevator traction device is driven to rotate by starting the gear motor 502, the control end of the gear motor 502 is manually controlled by an occupant inside the elevator traction device 1, and the first locking structure 3 or the second locking structure 4 at the head end and the tail end is driven to be close to the traction ladder 2 along with forward or backward movement of the gear motor 502, so that random switching between the first locking structure and the second locking structure 4 is completed.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. An improved lifting mechanism comprises a lifter (1), a supporting table arranged on the bottom surface of the lifter (1), a traction ladder (2) arranged behind the lifter (1) and in sliding contact with the traction ladder, and a driving device arranged on the rear wall of the lifter (1), wherein the driving device is characterized in that: the utility model provides a hoist (1) back wall top movable mounting is used for preventing a locking structure (3) of sudden failure when hoist (1) rise, hoist (1) back wall bottom movable mounting is used for preventing a locking structure (4) of sudden failure when hoist (1) descends, hoist (1) back wall middle-end installation is used for controlling a locking structure (3) and No. two locking structure (4) contact swing structure (5) of traction ladder (2), drive arrangement is including installing at the saddle rear end and be located driving motor (151) at hoist (1) rear, driving motor (151) output connection rim plate (152), rim plate (152) twine the steel cable, the steel cable upwards extends and passes fixed pulley group (153) that set up at traction ladder (2) top, and tail end connection hoist (1) top, the steel cable twines and passes fixed pulley (154) final fixed connection hoist (1) bottom behind rim plate (152) downwards, forms the closed loop.

2. An improved lifting mechanism as claimed in claim 1, wherein: the anti-drop mechanism (201) for wrapping the traction ladder (2) is arranged at the top of the rear wall of the elevator (1), the anti-drop mechanism (201) is U-shaped, the bent parts at the two ends are in sliding connection with the outer side of the traction ladder (2), and the anti-drop mechanism (201) is fixedly connected to the top of the rear wall of the elevator (1) through screws or welding.

3. An improved lifting mechanism as claimed in claim 2, wherein: the first locking structure (3) comprises a fixed plate (301) symmetrically arranged at the top of the rear wall of the elevator (1) and positioned below the anti-disengaging mechanism (201), a rolling wheel (302) in rolling friction with the traction ladder (2) is arranged on the side edge of the fixed plate (301), a one-way bearing (303) is connected to the inner ring of the rolling wheel (302), the inner shaft of the one-way bearing (303) penetrates through the fixed plate (301) to be connected with a second wheel disc (304), and a wheel surface of one side, far away from the fixed plate (301), of the second wheel disc (304) is connected with a crank connecting rod structure for converting self circular motion into linear motion.

4. An improved lifting mechanism as claimed in claim 3, wherein: the crank connecting rod structure comprises sliding grooves (6) symmetrically formed in the outer surface of a fixed plate (301), sliding rods (601) are connected to the inner sides of the sliding grooves (6) in a sliding mode, limiting rods (602) parallel to a second wheel disc (304) are connected to the tail ends of the sliding rods (601), stroke grooves (603) penetrating through the middle ends of the limiting rods (602) are formed, the inner sides of the stroke grooves (603) are fixedly connected to second sliding rods (604) on the wheel surface of the second wheel disc (304) in a sliding mode, clamping plates (605) parallel to the limiting rods (602) are connected to the head ends of the second sliding rods (604), and locking rods (606) are connected to the upper ends and the lower ends of the clamping plates (605).

5. An improved lifting mechanism as claimed in claim 1, wherein: no. two locking structure (4) are including installing No. two fixed plates (7) in lift (1) back wall bottom, no. two fixed plates (7) position and fixed plate (301) symmetry, no. two fixed plates (7) pass through bolt or welded fastening in lift (1) back wall, no. two fixed plate (7) side center rotation connection gyro wheel (8), gyro wheel (8) axle center passes No. two fixed plates (7) and tail end connection is located carousel (801) of No. two fixed plates (7) opposite side.

6. An improved lifting mechanism as recited in claim 5, wherein: the rotary table (801) is far away from a second fixed plate (7) and is provided with a crank connecting rod structure, the crank connecting rod structure is used for installing a piston rod (802) at the output end for converting circular motion into linear motion, the top of the piston rod (802) is connected with a sleeve (9) in an inserting mode, an opening of the sleeve (9) is downwards connected with a piston of the piston rod (802), the middle end of the side wall of the sleeve (9) is provided with a leakage hole (901), the leakage hole (901) penetrates through the side wall of the sleeve (9) and is communicated with the inner side of the sleeve, and the top of the outer surface of the sleeve (9) is fixedly connected to the side wall of the second fixed plate (301) through bolts or welding.

7. An improved lifting mechanism as recited in claim 6, wherein: the air pressure sensor (902) is arranged at the top of the inner side of the sleeve (9), the sensing end of the air pressure sensor (902) faces towards the opening of the sleeve (9), the output end of the air pressure sensor is connected with the single chip microcomputer (903) arranged at the top of the outer surface of the sleeve (9) through a wire, the output end of the single chip microcomputer (903) is connected with the electric push rod (904), and the output end of the electric push rod (904) faces downwards and is located on a crank connecting rod structure arranged on the wheel surface of the turntable (801).

8. An improved lifting mechanism as recited in claim 7, wherein: the fixed plate (301) and No. two fixed plate (7) bottoms still set up moving mechanism, moving mechanism is including symmetrically installing grip block (10) at fixed plate (301) and No. two fixed plate (7) bottom both ends, slide opening (11) that run through self are seted up to grip block (10) lateral wall, slide opening (11) inboard sliding connection slider (12), slide opening (11) fixed connection fixed plate (301) and No. two fixed plate (7) lateral walls are passed to slider (12) tail end.

9. An improved lifting mechanism as claimed in claim 1, wherein: the swing structure (5) comprises a positioning block (501) fixedly installed at the center of the rear wall of the elevator (1), a gear motor (502) is installed on the side wall of the positioning block (501), the output end of the gear motor (502) is connected with a poking rod (503), the top of the poking rod (503) is connected with the bottom of the fixing plate (301), and the bottom of the poking rod (503) is connected with the top surface of the second fixing plate (7).

10. An improved lifting mechanism as claimed in claim 9, wherein: the utility model discloses a fixed plate, including fixed plate (301), fixed plate (7), toggle lever (503), toggle lever (301) and fixed plate (7) junction sets up regulation structure, regulation structure is including rotating running roller (13) of connecting in toggle lever (503) head and tail end, running roller (13) sliding connection slide rail (14), slide rail (14) head end and tail end rigid coupling respectively in fixed plate (301) bottom surface and No. two fixed plate (7) top surfaces.