CN106927331B

CN106927331B - Speed-limiting anti-falling device for elevator transformation

Info

Publication number: CN106927331B
Application number: CN201710237969.4A
Authority: CN
Inventors: 金仲平; 吕正; 李隆骏; 吕信策; 陈永玉; 王涤宇; 沈彬彬; 谢其安; 张翀宇
Original assignee: Taizhou Special Equipment Inspection And Testing Research Institute
Current assignee: Taizhou Special Equipment Inspection And Testing Research Institute
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2022-10-28
Anticipated expiration: 2037-04-13
Also published as: CN106927331A

Abstract

The invention provides a speed-limiting anti-falling device for modifying a lift, and belongs to the technical field of hoisting machinery. It has solved the inconvenient problem of simple and easy lift transformation. This a prevent weighing down transformation device for speed limit of lift transformation, the lift includes the car, with the guide rail, lifting hook and two safety hook, the safety hook links firmly on the car, the speed limit prevents weighing down the transformation device and includes the overspeed governor, take-up pulley and mechanical connecting device, mechanical connecting device links firmly on the car, and mechanical connecting device is connected with the safety hook, the overspeed governor sets up the top of car, the take-up pulley hangs on the overspeed governor through wire rope closed loop, and the take-up pulley is located the below of car, wire rope's fag end links firmly on mechanical connecting device. The elevator car stopping device is additionally provided with the speed limiter, the tension wheel and the mechanical connecting device, the rope head of a steel wire rope connected between the speed limiter and the tension wheel in a closed loop mode is fastened with the car, and if the car is overspeed, the speed limiter acts immediately to stop the car on the guide rail.

Description

Speed-limiting anti-falling device for elevator transformation

Technical Field

The invention belongs to the technical field of hoisting machinery, relates to a lifter, and particularly relates to a speed-limiting anti-falling device for the reconstruction of the lifter.

Background

The simple elevator is a hoisting machine which uses an electric hoist, a traction machine, a winch and a hydraulic pump station as driving devices, drives a loading device through a steel wire rope, a chain, a hydraulic oil cylinder and the like, and carries goods along a rigid guide device with the vertical or direction gradient smaller than 15 degrees in a well, and the existing down falling prevention device of the simple elevator mainly has 2 types: 1, a common falling protector; 2 speed limiter safety tongs.

27.2 of the hoisting machinery periodic inspection rules TSG Q7015-2016 issued by the State quality supervision, inspection and quarantine Bureau of the people's republic of China on 2016, 3, 23 stipulate that besides a direct-acting hydraulic simple elevator, whether the simple elevator in other forms is provided with a downlink overspeed protection device needs to be checked, and the following requirements are met:

1. the descending overspeed protection device adopts a mechanical action mode and can reliably stop a container loaded with rated lifting capacity.

2. The down overspeed protection device is provided with an effective electric interlocking device which can cut off an electric safety loop of the simple elevator when the down overspeed protection device acts.

3. The action speed of the downstream overspeed protection device is not less than 115% of the rated speed and is less than 0.8m/s.

Thus, in practical use, there are several problems:

1. at present, most of simple elevator descending falling-prevention devices are only composed of a pair of common falling protectors, only meet the 1 st requirement of a new inspection rule 27.2, do not meet the requirements of 2 and 3, cannot be used continuously, and need to be modified.

2. Change ordinary safety hook into overspeed governor safety tongs through transforming and need install the safety tongs additional under the lift car to demolish the safety hook, and current old standard lift probably the civil engineering is not conform to the pit depth not enough, and a lot of pits can't be dug down in the actual conditions promptly.

3. The common falling protector is replaced by the speed limiter safety tongs for a longer time through modification, and the cost is higher.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a speed-limiting anti-falling device for modifying an elevator, and aims to solve the problems that if an original simple elevator is rapidly and conveniently modified, the modification cost is low.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a prevent weighing down transformation device for speed limit of lift transformation, the lift includes the car, is used for supplying the guide rail that the car goes up and down, is used for drawing and hangs the lifting hook of car and two safety hook that are used for making the lift stop, the safety hook links firmly on the car, a serial communication port, the speed limit is prevented weighing down the transformation device and is included overspeed governor, take-up pulley and mechanical connecting device, mechanical connecting device links firmly on the car, and mechanical connecting device is connected with the safety hook, the overspeed governor sets up the top of car, the take-up pulley hangs on the overspeed governor through the wire rope closed loop, and the take-up pulley is located the below of car, wire rope's rope head links firmly on mechanical connecting device.

This speed limit prevents weighing down transformation device is through addding overspeed governor, take-up pulley and mechanical connecting device, and the rope head portion that closed loop connects the wire rope between overspeed governor and take-up pulley is together fastened with the car, if the car exceeds speed, the overspeed governor moves immediately, presss from both sides tight wire rope, and when the car continues to descend, wire rope pulling connecting device jack-up safety hook for the track is carried in the safety hook action, stops the car system on the guide rail, stop motion.

In foretell a speed limit prevents weighing down and reforms transform device for lift transformation, be provided with the bridge type support that is used for supporting mechanical connecting device on the car, the top of car has two piece at least supporting beams, the bridge type support system is "nearly" style of calligraphy, and two bases of bridge type support respectively weld on the top surface of a supporting beam. The bottom surfaces of the two bases of the bridge-shaped support are directly welded on the supporting beam on the car top through the welding surfaces, so that the original supporting beam structure is prevented from being damaged due to drilling, and the rigidity of the original supporting beam is ensured.

In the speed-limiting anti-falling transformation device for transforming the elevator, the mechanical connection device comprises a main connection component and a passive connection component, the number of the bridge-shaped supports is two, the main connection component and the passive connection component are respectively connected with an anti-falling device, the main connection component and the passive connection component are respectively connected onto one bridge-shaped support, the rope head of the steel wire rope is fixedly connected onto the main connection component, and the passive connection component and the main connection component are connected through a connecting rod. The steel wire rope is tightened under the action of the speed limiter and drives the main connecting component to link, the main connecting component drives the falling protector connected with the main connecting component to brake and drives the passive connecting component to link through the connecting rod, and the passive connecting component drives the falling protector connected with the passive connecting component to brake simultaneously.

In foretell speed limit for lift transformation prevents weighing down and reforms transform device, the main connecting element is including transversely alternating the main dwang on one of them bridge type support, passive connecting element is including transversely alternating the passive dwang on another bridge type support, the middle part of main dwang and the middle part of passive connecting rod all overlap and are equipped with the support sleeve who is used for connecting the safety hook for safe electrical apparatus switch has on the lateral wall face of the bridge type support of connecting the main dwang, safe electrical apparatus switch links to each other with the electrical safety circuit of simple and easy lift, the one end of main dwang links firmly perpendicularly and is used for linking firmly wire rope's wire rope connecting rod and is used for with safe electrical apparatus switch matched with rotation rapping bar, and the other end of main dwang links firmly the main transfer line perpendicularly, the one end of passive dwang links firmly passive transfer line perpendicularly, passive transfer line passes through the connecting rod and links to each other with the main transfer line. When the steel wire rope drives the rotating rod to rotate relative to the bridge-type support through the steel wire rope connecting rod, the rotating striking rod rotates along with the main rotating rod to trigger a safety electric switch, so that an electric safety loop of the simple elevator is cut off, and further braking is carried out.

In the speed-limiting anti-falling transformation device for transforming the elevator, the support sleeve is connected with two support rods, and free ends of the support rods are provided with connecting holes. The top pull connecting rod is inserted in the connecting hole and locked by the nut to avoid being disengaged; the axial of connecting hole is perpendicular with bracing piece and support sleeve homogeneous phase, and joint strength is high, and bears the stress less, and is not fragile.

In foretell speed limit for lift transformation prevents weighing down and reforms transform device, the constant head tank has been seted up on the lateral wall of main dwang, the axial setting of constant head tank along main dwang, first spiral locating hole has been seted up on the pipe wall of one side of support sleeve, it has first spiral locating pin to connect soon in the first spiral locating hole, and when support sleeve linked firmly on main dwang, the bottom of first spiral locating pin supported and leaned on the tank bottom of constant head tank. The position of the support sleeve relative to the main rotating rod can be adjusted by adjusting the position of the first spiral positioning pin relative to the spiral positioning hole, so that the transformation of simple elevators of different types and sizes can be adapted; the spiral positioning holes and the supporting rods are respectively positioned on the two opposite pipe walls of the supporting sleeve, namely the supporting rods, the main rotating rod and the spiral positioning pins are positioned on the same plane, so that the stress distribution is more reasonable during braking and the braking is not easy to damage.

In foretell speed limit for lift transformation prevents weighing down and reforms transform device, the one end of main dwang is provided with spacing fender edge, still overlaps on the other end and is equipped with a spacing lantern ring, second spiral locating hole has been seted up on the spacing lantern ring, the downthehole second spiral locating pin that has connect soon of second spiral locating hole, when the spacing lantern ring links firmly on main dwang, the bottom of second spiral locating pin supports the tank bottom that leans on at the constant head tank, the lateral wall that the spacing fender was followed supports and leans on the one side internal face at bridge type support, the lateral wall of the spacing lantern ring supports and leans on the opposite side internal face at bridge type support. The limiting blocking edge is located on the inner side of the rotary striking rod, the limiting lantern ring is located on the inner side of the main transmission rod, the limiting blocking edge is matched with the limiting lantern ring to limit the relative position of the main transmission rod and the bridge-shaped support, the main transmission rod and the steel wire rope are matched in place, and meanwhile the rotary striking rod is also guaranteed to be capable of triggering the safety electric switch.

In foretell speed limit for lift transformation prevents weighing down and reforms transform device, the safety hook includes fixed plate, rack, dead lever and two cams that are used for pressing from both sides to establish on the guide rail, the face center of fixed plate has the spout of vertical setting, the dead lever alternates perpendicularly and sliding connection is in the spout, and the length direction of rack is unanimous with the length direction of spout, the one end and the car of dead lever link firmly mutually, and the other end links firmly mutually with the rack, and two cams respectively insert perpendicularly through a locating shaft and establish on the fixed plate, the locating shaft is connected respectively on the eccentric position of corresponding cam, and each coaxial coupling of two cams has a gear, and two gear symmetries set up and all mesh and connect on the rack. During braking, the fixed rod drives the rack to link, the rack drives the two cams to rotate, and the gap distance between the two cams is made to become smaller and smaller until the rail is clamped, so that the lift car is stopped.

In foretell speed limit that is used for lift transformation prevents weighing down and reforms transform device, the safety hook still includes a pulling force adjustment subassembly, a pulling force adjustment subassembly is including linking firmly fixed cover, spring and the pulling force adjusting lever of top on the fixed plate, a pulling force adjusting lever passes through spring sliding connection in fixed cover, and the bottom of a pulling force adjusting lever supports and leans on the top surface of dead lever. The pre-tightening force of the spring on the top tension adjusting rod is adjusted, so that the strain magnitude of the top tension can be adjusted and preset, and the lifting device is suitable for transformation of lifting machines with different rated lifting loads.

In foretell speed limit for lift transformation prevents weighing down and reforms transform device, the fixed plate pulls the connecting rod through a plurality of tops and links firmly on the car, the top that the connecting rod was pulled on the top has the go-between that links firmly on fixed plate one side face through bolt assembly, and the bottom of pulling the connecting rod on the top is connected perpendicularly on the car and is locked through the nut. The top-pull connecting rod is fixedly connected with the fixed plate through the bolt assembly, and the wall surface of the connecting ring is attached to the plate surface of the fixed plate, so that the connection is firm, and the disassembly and the assembly are convenient; the top pull connecting rod is from top to bottom inserted and is established on the car to through nut locking, easy dismounting not only, the bottom of top pull connecting rod has the external screw thread of a big section moreover, installation and debugging are convenient, are suitable for the not co-altitude and the lift transformation of size.

Compared with the prior art, the invention has the following advantages:

1. by additionally arranging the speed limiter, the tensioning wheel and the mechanical connecting device, the simple elevator only provided with the common falling protector can be modified, so that the elevator has a speed limiting function and reaches the national quality inspection standard;

2. according to the invention, a speed limiter safety clamp is not required, the installation and transformation time and the physical strength of a transformer are saved, the influence of civil engineering is avoided, and the transformation difficulty is small;

3. the mechanical connecting device is an adjustable connecting component, is more controllable in installation, and can better cope with different installation structures of the simple elevator in the old standard.

Drawings

FIG. 1 is a schematic diagram of the present invention.

FIG. 2 is a schematic front view of the fall arrester of the present invention.

FIG. 3 is a schematic view of the rear face of the fall arrester of the present invention.

FIG. 4 is a top schematic view of the fall arrester of the present invention.

Fig. 5 is a schematic view of the top tension adjusting assembly according to the present invention.

Fig. 6 is a schematic view showing a connection structure of a main connection member and a bridge type stent in the present invention.

Fig. 7 is an enlarged view of fig. 1 at a.

Fig. 8 is a schematic view of the structure of the main joint member in the present invention.

Fig. 9 is an enlarged view of fig. 1 at B.

Fig. 10 is a schematic view of the structure of the passive connecting member of the present invention.

In the figure, 1, a car; 2. a guide rail; 3. a hook; 4. a safety catch; 41. a fixing plate; 411. a chute; 42. a rack; 43. fixing the rod; 44. a cam; 45. a top tension adjustment assembly; 451. fixing a sleeve; 452. a spring; 453. a top tension adjusting rod; 454. a sliding sleeve; 455. adjusting the bolt; 456. adjusting the nut; 457. an adjustment plate 46, a positioning shaft; 47. a gear; 48. a limiting block; 5. a speed limiter; 6. a tension pulley; 7. a mechanical connection device; 71. a primary connecting member; 711. a main rotating rod; 712. a wire rope connecting rod; 713. rotating the knock rod; 714. a main transmission rod; 715. positioning a groove; 716. limiting blocking edges; 72. a passive connection member; 721. a passive rotating rod; 722. a passive transmission rod; 723. a limiting edge; 724. positioning the clamping groove; 73. a connecting rod; 8. a wire rope; 9. a connecting rod is pulled in a jacking mode; 91. a connecting ring; 10. a bridge type stent; 11. a support beam; 12. a support sleeve; 121. a support bar; 122. connecting holes; 123. a first spiral positioning hole; 13. a safety electrical switch; 14. a first helical locating pin; 15. a limiting lantern ring; 151. a second spiral positioning hole; 16. a second helical locating pin; 17. a bearing seat; 18. and an auxiliary support.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Referring to fig. 1, the embodiment is a speed-limiting anti-falling transformation device for transformation of an elevator, the elevator comprises a car 1, a guide rail 2 for lifting the car 1, a lifting hook 3 for pulling and hanging the car 1 and two anti-falling devices 4 for braking the elevator, the anti-falling devices 4 are fixedly connected to the car 1, the speed-limiting anti-falling transformation device comprises a speed limiter 5, a tension pulley 6 and a mechanical connection device 7, the mechanical connection device 7 is fixedly connected to the car 1, the mechanical connection device 7 is connected with the anti-falling devices 4, the speed limiter 5 is arranged above the car 1 and can be arranged in a machine room of the simple elevator or a shaft for lifting the car 1, the tension pulley 6 is hung on a speed limiting wheel of the speed limiter 5 through a steel wire rope 8 in a closed loop manner, the tension pulley 6 is located below the car 1, and the head of the steel wire rope 8 is fixedly connected to the mechanical connection device 7.

The anti-falling device 4 comprises a fixed plate 41, a rack 42, a fixed rod 43, two cams 44 arranged on the guide rail 2 in a clamping mode and a top tension adjusting assembly 45 used for limiting the stroke of the fixed rod 43, wherein the fixed plate 41 is provided with a vertically arranged sliding groove 411 in the center of the plate surface, the fixed rod 43 is vertically inserted and slidably connected into the sliding groove 411, the length direction of the rack 42 is consistent with that of the sliding groove 411, one end of the fixed rod 43 is fixedly connected with the car 1, the other end of the fixed rod is fixedly connected with the rack 42, the two cams 44 are vertically inserted into the fixed plate 41 through positioning shafts 46, the positioning shafts 46 are respectively connected to the eccentric positions of the corresponding cams 44, the two cams 44 are respectively and coaxially connected with a gear 47 through key pins, and the two gears 47 are symmetrically arranged and are respectively connected to the rack 42 in a meshing mode. Furthermore, the wheel surfaces of the two cams 44 are respectively provided with a plane limiting surface 441, when the falling protector 4 stops, the limiting surfaces 441 of the two cams 44 respectively abut against two side surfaces of the guide rail 2, namely after the two cams 44 rotate along with the gear 47 and the gap is reduced enough to stop the elevator, the cams 44 abut against the guide rail 2 by the fiber cotton 441, so that the stopping is firmer and the stability is better.

With reference to fig. 5, the top tension adjusting assembly 45 includes a fixing sleeve 451 fixed to the fixing plate 41, a spring 452, a top tension adjusting rod 453, a sliding sleeve 454, an adjusting bolt 455, an adjusting nut 456 and an adjusting plate 457, the sliding sleeve 454 is disposed in the fixing sleeve 451, the top end of the top tension adjusting rod 453 is slidably inserted into the sliding sleeve 454, the top end of the spring 452 abuts against the bottom surface of the sliding sleeve 454, the bottom end of the spring 452 abuts against a stop edge at the bottom end of the top tension adjusting rod 453, the adjusting plate 457 is welded to the top end of the fixing sleeve 451, the adjusting plate 457 has a threaded hole, the adjusting bolt 455 is screwed into the threaded hole, the bottom end of the adjusting bolt 455 abuts against the top surface of the sliding sleeve 454, and the position of the sliding sleeve 454 in the fixing sleeve 451 can be adjusted by the adjusting bolt 455, so that the pre-tightening force of the spring 452 can be adjusted to adapt to the reformation of different simple elevators. The adjusting nut 456 is screwed on the adjusting bolt 455, the bottom surface of the adjusting nut 456 abuts against the top surface of the adjusting plate 457, and the adjusting nut 456 can lock the adjusting bolt 455 to prevent disengagement.

With reference to fig. 1, 6 and 7, the top of the car 1 has at least two supporting beams 11, the car 1 is provided with two bridge-shaped supports 10 for supporting the mechanical connection device 7, the two bridge-shaped supports 10 are respectively fixedly connected to two ends of the supporting beams 11 by welding, the bridge-shaped supports 10 are made in a shape like a Chinese character ji, two bases of the bridge-shaped supports 10 are respectively welded to the top surface of one supporting beam 11, and the fixing rod 43 is fixedly connected in the bearing seat 17 at the top end of the bridge-shaped support 10. The mechanical connecting device 7 comprises a main connecting component 71 and a passive connecting component 72, the number of the bridge-shaped supports 10 is two, the main connecting component 71 and the passive connecting component 72 are respectively connected with a safety catch 4, the main connecting component 71 and the passive connecting component 72 are respectively connected onto one bridge-shaped support 10, the rope head part of the steel wire rope 8 is fixedly connected onto the main connecting component 71, and the passive connecting component 72 is connected with the main connecting component 71 through a connecting rod 73.

With reference to fig. 6 to 10, the main connecting member 71 includes a main rotating rod 711 transversely inserted into the punched preformed hole of one of the bridge-shaped supports 10, the passive connecting member 72 includes a passive rotating rod 721 transversely inserted into the punched preformed hole of the other bridge-shaped support 10, the middle portions of the main rotating rod 711 and the passive connecting rod are both sleeved with a support sleeve 12 for connecting the falling protector 4, the side wall surface of the bridge-shaped support 10 for connecting the main rotating rod 711 is provided with a safety electrical switch 13, the safety electrical switch 13 is connected to the electrical safety circuit of the simple elevator, one end of the main rotating rod 711 is vertically fixedly connected to a steel wire rope connecting rod 712 for fixedly connecting the steel wire rope 8 and a rotating knock rod 713 for matching with the safety electrical switch 13, the other end of the main rotating rod 711 is vertically fixedly connected to a main driving rod 714, one end of the passive rotating rod 721 is vertically fixedly connected to a passive driving rod 722, and the passive driving rod 722 is connected to the main driving rod 714 through a connecting rod 73.

Two support rods 121 are connected to the support sleeve 12, and the free ends of the support rods 121 are provided with connecting holes 122. The side wall of the main rotating rod 711 is provided with a positioning groove 715, the positioning groove 715 is axially arranged along the main rotating rod 711, the pipe wall on one side of the support sleeve 12 is provided with a first spiral positioning hole 123, a first spiral positioning pin 14 is rotatably connected in the first spiral positioning hole 123, and when the support sleeve 12 is fixedly connected to the main rotating rod 711, the bottom end of the first spiral positioning pin 14 abuts against the bottom of the positioning groove 715. A positioning slot 724 is formed in the side wall of the passive rotating rod 721, and when the support sleeve 12 is fixedly connected to the passive rotating rod 721, the bottom end of the first spiral positioning pin 14 abuts against the bottom of the positioning slot 724.

The welding of the one end of main dwang 711 has spacing fender edge 716, still the cover is equipped with a spacing lantern ring 15 on the other end, second spiral locating hole 151 has been seted up on the spacing lantern ring 15, second spiral locating hole 151 has connect second spiral locating pin 16 in the second spiral locating hole 151 soon, when spacing lantern ring 15 links firmly on main dwang 711, the bottom of second spiral locating pin 16 supports and leans on the tank bottom at constant head tank 715, spacing fender edge 716's lateral wall supports and leans on the one side internal face at bridge type support 10, spacing lantern ring 15's lateral wall supports and leans on the opposite side internal face at bridge type support 10. One end of the passive rotating rod 721 is sleeved with a limiting lantern ring 15, the other end of the passive rotating rod 721 is welded with a limiting edge 723, when the limiting lantern ring 15 is fixedly connected to the passive rotating rod 721, the bottom end of the second spiral positioning pin 16 abuts against the groove bottom of the positioning clamping groove 724, the outer side wall of the limiting edge 723 abuts against the inner wall surface of one side of the bridge-shaped support 10, and the outer side wall of the limiting lantern ring 15 abuts against the inner wall surface of the other side of the bridge-shaped support 10

Combine fig. 2, fig. 3, fig. 7, fig. 8, fig. 9 and fig. 10, fixed plate 41 links firmly on bracing piece 121 through a plurality of top connecting rods 9, the hypomere of top connecting rod 9 has the external screw thread, top connecting rod 9 alternates in connecting hole 122 and locks through the nut, the top of top connecting rod 9 has go-between 91, and lock on fixed plate 41 one side face through bolt assembly, cam 44 and gear 47 are located the opposite side face of fixed plate 41 in this embodiment, and the upper and lower ends of this curb plate face respectively have a stopper 48, stopper 48 can make fixed plate 41 be located near guide rail 2 all the time, avoid the skew.

The installation steps of this embodiment are as follows:

1. respectively welding a bridge type bracket 10 at two ends of a support beam 11 of the car 1, respectively installing a main connecting member 71 and a passive connecting member 72 on the two bridge type brackets 10, and connecting the main connecting member 71 and the passive connecting member 72 through a connecting rod 73;

2. the two anti-falling devices 4 are respectively connected to the bridge-type bracket 10 through the fixing rods 43, and the two anti-falling devices 4 are respectively connected with the main connecting component 71 and the passive connecting component 72 through the jacking connecting rods 9;

3. a speed governor 5 is provided at the top end of the guide rail 2, a tension pulley 6 is provided at the bottom end, a wire rope 8 is connected to the speed governor 5 and the tension pulley 6 in a closed loop, and the rope head of the wire rope 8 is connected to a wire rope connecting rod 712 of the main connecting member 71.

The speed-limiting anti-falling principle of the embodiment after installation is as follows: the wire rope 8 passing through the speed limiter 5 forms a closed loop around the tension pulley 6, the head of the wire rope is fastened with a wire rope connecting rod 712 and is connected with the anti-falling devices 4 through a main connecting component 71 fixed on the bridge type support 10, if the car 1 is overspeed, the speed limiter 5 acts immediately to clamp the wire rope 8, when the car descends 1, the wire rope 8 pulls the wire rope connecting rod 712 to enable the mechanical connecting device 7 to work and jack up the two anti-falling devices 4 simultaneously, the fixing rod 43 drives the rack 42 to move downwards, the cam 44 rotates and clamps the guide rail 2, meanwhile, the main connecting component 71 triggers the safety electrical switch 13 to cut off an electrical safety loop of the simple elevator, and the car 1 is further stopped on the guide rail 2 to stop moving.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A speed-limiting anti-falling transformation device for transformation of an elevator, the elevator comprises a car (1), a guide rail (2) for lifting the car (1), a lifting hook (3) for pulling and suspending the car (1), and two anti-falling devices (4) for stopping the elevator, the anti-falling devices (4) are fixedly connected on the car (1), the speed-limiting anti-falling transformation device is characterized in that the speed-limiting anti-falling device comprises a speed limiter (5), a tension pulley (6) and a mechanical connecting device (7), the mechanical connecting device (7) is fixedly connected on the car (1), the mechanical connecting device (7) is connected with the anti-falling devices (4), the speed limiter (5) is arranged above the car (1), the tension pulley (6) is suspended on the speed limiter (5) through a steel wire rope (8) closed loop, the tension pulley (6) is positioned below the car (1), the rope head of the steel wire rope (8) is fixedly connected on the mechanical connecting device (7), the mechanical connecting device (7) comprises a main connecting component (71) and a passive connecting component (72), the bridge support (10) is connected with the main connecting component (71) and the passive connecting component (72), the rope head of wire rope (8) links firmly on main connecting elements (71), be connected through connecting rod (73) between passive connecting elements (72) and the main connecting elements (71), main connecting elements (71) are including transversely alternate main dwang (711) on one of them bridge type support (10), passive connecting elements (72) are including transversely alternate passive dwang (721) on another bridge type support (10), the middle part of main dwang (711) and the middle part of passive connecting rod all overlap and are equipped with support sleeve (12) that are used for connecting safety hook (4), have safe electrical apparatus switch (13) on the lateral wall face of bridge type support (10) for connecting main dwang (711), safe electrical apparatus switch (13) and the electric safety circuit of simple and easy lift link to each other, the one end of main dwang (711) links firmly wire rope connecting rod (712) that is used for dwang (8) and is used for rotating and beat pole (713) with safe electrical apparatus switch (13) matched with perpendicularly, the other end of main dwang (711) links firmly perpendicularly the main dwang (714), the one end of driven dwang (714) link rod (714) is connected with two passive pole (121) through passive pole (714), passive pole (714) support sleeve (714), the falling protector comprises a support rod (121), a connecting hole (122) at the free end of the support rod (121), a falling protector (4) and a top tension adjusting assembly (45), wherein the falling protector comprises a fixed plate (41), a rack (42), a fixed rod (43), two cams (44) clamped on the guide rail (2) and used for limiting the stroke of the fixed rod (43), a sliding groove (411) which is vertically arranged is formed in the center of the plate surface of the fixed plate (41), the fixed rod (43) vertically penetrates through and is slidably connected into the sliding groove (411), the length direction of the rack (42) is consistent with that of the sliding groove (411), one end of the fixed rod (43) is fixedly connected with a car (1), the other end of the fixed rod is fixedly connected with the rack (42), the two cams (44) are vertically inserted into the fixed plate (41) through a positioning shaft (46), the positioning shafts (46) are respectively connected to the eccentric positions of the corresponding cams (44), the two cams (44) are respectively and are coaxially connected with a gear (47), the two gear connecting rings (47) are symmetrically arranged and are respectively meshed with the fixed on the rack (42), the fixed plate surface of the fixed plate (41) through a plurality of gear connecting rods (9), and the top tension adjusting assembly (9) is arranged on one side of the car (1), the bottom end of the top pull connecting rod (9) is inserted into the connecting hole (122) and is locked by a nut.

2. The speed-limiting anti-falling transformation device for the transformation of the elevator is characterized in that a bridge-shaped support (10) for supporting a mechanical connection device (7) is arranged on the car (1), the top of the car (1) is provided with at least two supporting beams (11), the bridge-shaped support (10) is made into a shape like a Chinese character ji, and two bases of the bridge-shaped support (10) are respectively welded on the top surface of one supporting beam (11).

3. The speed-limiting anti-falling transformation device for the transformation of the elevator as claimed in claim 2, wherein a positioning groove (715) is formed in a side wall of the main rotating rod (711), the positioning groove (715) is arranged along the axial direction of the main rotating rod (711), a first spiral positioning hole (123) is formed in a pipe wall on one side of the support sleeve (12), a first spiral positioning pin (14) is screwed in the first spiral positioning hole (123), and when the support sleeve (12) is fixedly connected to the main rotating rod (711), the bottom end of the first spiral positioning pin (14) abuts against the bottom of the positioning groove (715).

4. The speed-limiting anti-falling transformation device for the transformation of the elevator according to claim 3, wherein one end of the main rotating rod (711) is provided with a limiting blocking edge (716), the other end of the main rotating rod is further sleeved with a limiting sleeve ring (15), the limiting sleeve ring (15) is provided with a second spiral positioning hole (151), the second spiral positioning hole (151) is internally screwed with a second spiral positioning pin (16), when the limiting sleeve ring (15) is fixedly connected to the main rotating rod (711), the bottom end of the second spiral positioning pin (16) abuts against the bottom of the positioning groove (715), the outer side wall of the limiting blocking edge (716) abuts against the inner wall surface of one side of the bridge-shaped support (10), and the outer side wall of the limiting sleeve ring (15) abuts against the inner wall surface of the other side of the bridge-shaped support (10).

5. The speed limiting anti-falling remodeling device for elevator remodeling of claim 4, wherein the top tension adjusting assembly (45) comprises a fixed sleeve (451) fixed on the fixed plate (41), a spring (452) and a top tension adjusting rod (453), the top tension adjusting rod (453) is slidably connected in the fixed sleeve (451) through the spring (452), and the bottom end of the top tension adjusting rod (453) abuts against the top surface of the fixed rod (43).