CN111891960A

CN111891960A - Elevator safety brake

Info

Publication number: CN111891960A
Application number: CN202010778161.9A
Authority: CN
Inventors: 夏鹏宇; 刘鹏
Original assignee: 夏鹏宇
Current assignee: Suzhou Dongfang Fuli Elevator Parts Co.,Ltd.
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2020-11-06
Anticipated expiration: 2040-08-05
Also published as: CN111891960B

Abstract

The invention discloses an elevator safety brake, which comprises a brake main body consisting of a base main body, two brake arms, a screw rod, two brake shoes, a brake disc, two spring main bodies, a spring scale, a brake rod, a plunger and an electromagnet, wherein the bottom ends of the two brake arms are provided with a secondary brake mechanism, the secondary brake mechanism comprises a secondary brake shoe, a brake pad, a main connecting arm, a secondary connecting arm, an elastic bending mechanism and a fixing bolt, the brake pad is arranged on the upper end surface of the secondary brake shoe, the upper end surface of the brake pad is tightly attached to the annular side surface of the brake disc, the secondary brake mechanism is added in the device, when the brake arms are switched on and brake by encircling the brake shoes, the secondary brake mechanism is compressed to be bent upwards and arched to contact the annular bottom surface of the brake disc to assist in braking, thereby make braking inertia dynamics homodisperse, increase braking effect.

Description

Elevator safety brake

Technical Field

The invention relates to the technical field of elevator brakes, in particular to an elevator safety brake.

Background

The brake is an extremely important safety component of a traction type elevator, the brake on the elevator tractor adopts a brake consisting of a spring and an electromagnet at present, most of the brakes adopted by the elevator at present are electromechanical friction type normally closed brakes, the normally closed brakes refer to brakes when machinery does not work, the brakes are released when the machinery runs, when the elevator brakes, the action of mechanical force is relied on, so that the brake torque is generated by friction between a driving belt and a driving wheel, and when the elevator runs, the brake is released by the electromagnetic force, so the brake is also called as an electromagnetic brake.

The brake is a basic device for ensuring the safe operation of the elevator, has strict requirements on the elevator brake, can generate enough braking torque when the elevator brake normally works, and the braking torque is irrelevant to the steering of a traction motor.

In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: 1. when the traditional elevator electromagnetic brake is used, the brake electromagnet at the top end of the device is powered off, the brake rod is contracted, the brake arms at two sides are pulled, and the brake shoes at the inner sides of the brake arms are forced to close and surround the brake disc inside to brake, however, in the actual use process, the brake shoes at two sides and the inner sides of the brake shoes are used for rapidly and frequently braking the brake disc rotating clockwise or anticlockwise, and the local area of the brake disc is frequently braked and rubbed for a long time, so that the abrasion of the local area is serious, the service life of the brake disc in the device is reduced, meanwhile, the distribution of the traditional brake shoes in the device is mostly distributed in a symmetrical structure, the brake is closed to an environment-friendly brake disc through the brake arms, and the brake force can not be uniformly dispersed due to the fact that the brake shoes at two sides are difficult to guarantee reliable brake, the equipment is loosened due to long-time inertia impact, and under the condition, the equipment can be ensured to run safely and reliably by frequent overhauling and maintenance of maintenance personnel;

2. particularly aiming at the operation under the environment with high metal dust and high oil stain, if a certain amount of metal dust is attached to the surface of a brake disc in the braking process of a brake, irregular scratches can be caused to the surface of the brake disc, the surface of a brake pad is seriously abraded, a user needs frequent maintenance and replacement, and in a metal processing workshop with high oil stain, the key of safe and reliable operation of the brake is realized when the friction coefficient between the brake disc and a brake shoe is high, however, once a large amount of oil stain is attached, the brake fails to work normally if light, and safety accidents are caused if heavy, therefore, the smoothness and tidiness of the contact surface of the annular side surface of the brake disc and the brake shoe are very important, most of the traditional worker overhauling modes select to lightly scrape solid oil stain on the surface by a blade and carefully clean cotton cloth, the process is extremely complicated, and once the environment of the, it is difficult to guarantee that the processing is clean and tidy, reliable safety, therefore this process not only increases maintenance personal's the work dynamics, and can't effectual guarantee overhaul of equipments accord with the standard.

To this end, an elevator safety brake is proposed.

Disclosure of Invention

The invention aims at providing an elevator safety brake, which is structurally characterized in that a secondary braking mechanism is added into the device, when a brake arm is skillfully applied to brake through a brake shoe brake to surround a brake disc when the brake arm is switched on and brake is carried out through the brake shoe brake, the secondary braking mechanism is compressed to force the brake arm to be bent upwards and arched to contact the annular bottom end surface of the brake disc to assist the brake, so that the braking inertia force is uniformly dispersed, the braking effect is improved, meanwhile, an elastic blade is installed to start a debugging mode when the brake disc needs to be maintained according to the use requirement, the brake disc slowly rotates and is in contact with the elastic blade, scraping the oil stain attached to the surface of the brake disc, and improving the braking effect so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an elevator safety brake comprises a brake main body consisting of a base main body, two brake arms, a screw rod, two brake shoe brakes, a brake disc, two spring main bodies, a spring scale, a brake rod, a plunger and an electromagnet, wherein the bottom ends of the two brake arms are provided with a secondary brake mechanism;

the secondary brake mechanism comprises a secondary brake shoe, a brake pad, a main connecting arm, a secondary connecting arm, an elastic bending mechanism and a fixing bolt, the brake pad is arranged on the upper end face of the secondary brake shoe, the upper end face of the brake pad is tightly attached to the annular side face of the brake disc, the outer surface of the lower end of the secondary brake shoe penetrates through the fixing bolt, the elastic bending mechanism is arranged at each of two ends of the secondary brake shoe, the end, far away from the secondary brake shoe, of the elastic bending mechanism is respectively provided with the main connecting arm and the secondary connecting arm, the main connecting arm and the secondary connecting arm are fixedly installed, the cross section of the main connecting arm is of a rectangular structure, the secondary connecting arms are integrally distributed in a cylindrical structure, threads are arranged on the surface of the bottom end of the secondary brake shoe, a sliding groove is formed in the upper end face of the secondary brake shoe, a sliding, the sliding block and the sliding groove are mutually inosculated and connected in a sliding way in a T-shaped structure, the brake pad and the secondary brake shoe are installed in a matching way, the length, the size and the specification of the two are completely matched, a threaded hole is arranged on the lower end surface of the secondary brake shoe close to the fixing bolt, and the slide block is also provided with a corresponding thread groove near the thread hole, the fixing bolt is in threaded connection through the thread hole to connect and fix the brake pad and the secondary brake shoe, the center of the upper end surface of the brake pad is provided with a built-in connecting groove, a connecting block is movably arranged in the built-in connecting groove, elastic blades are symmetrically and fixedly installed on the upper side of the outer surface of the connecting block, the angle between each elastic blade and the corresponding brake pad is 13-15 degrees, the elastic blade is made of a tough metal material, and a corrugated friction area surface is arranged at the top end of the brake pad;

two the through-hole groove has been seted up to the position that stopper arm bottom is close to inferior linking arm bottom, the bottom of inferior linking arm runs through the stopper arm through the through-hole groove, and stopper arm both sides face is provided with first spacing bolt and the second spacing bolt of cup jointing on inferior linking arm respectively, first spacing bolt is located the upside of second spacing bolt, first spacing bolt is opposite with second spacing bolt screw thread direction of rotation, and the inside in through-hole groove is provided with adjustment mechanism.

Through adopting above-mentioned technical scheme, through add second grade arrestment mechanism in the device, ingenious application brake arm is closing a floodgate and is embracing the brake disc through the brake shoe brake and braking when, compression second grade arrestment mechanism forces its kickup contact brake disc annular bottom surface to brake its supplementary, thereby make braking inertia dynamics homodisperse, increase braking effect, the user can be according to the user demand installation elastic blade start-up debugging mode when the brake disc needs to be maintained simultaneously, the brake disc slowly rotates and contacts with elastic blade, scrape the adnexed greasy dirt of getting the brake disc surface, braking effect is improved.

Preferably, the elastic bending mechanism comprises an elastic connection block, the elastic connection block is distributed in an arc structure, a plurality of groups of elastic reinforcing ribs distributed equidistantly are arranged inside the elastic connection block, the elastic connection block is made of a ductile metal material, the outer surface of the elastic connection block is coated with an anti-rust coating, two connection grooves with the same size and specification are formed in the two ends of the elastic connection block, an insertion block is arranged inside each connection groove, the two insertion blocks inside the connection grooves are respectively and fixedly connected with the second-stage brake shoe and the main connection arm in an integrated manner, two stud columns penetrate through the positions, close to the connection grooves, of the two ends of the outer surface of the elastic connection block respectively, fixing nuts are in threaded connection with the two ends of the stud columns, the two fixing nuts are opposite to the threaded regions at the two ends of the stud columns in rotating direction, the insertion block and the insertion grooves are matched with each other and are installed in a seamless manner, and the outer surface of the inserting block is glued with a rubber pad.

By adopting the technical scheme, when the device works, the secondary braking mechanism is added to skillfully apply the brake arm to brake through the brake shoe brake encircling brake disc when the brake is switched on and brake is carried out through the brake shoe brake, the secondary braking mechanism is compressed to force the brake arm to bend upwards and arch to contact the annular bottom end surface of the brake disc for assisting the brake, so that the braking inertia force is uniformly dispersed, and the braking effect is improved, however, when the device is used, the secondary brake shoe is made of elastic metal materials, so that the secondary brake shoe and the brake pad of the secondary brake shoe can be forced to generate elastic deformation under the supporting and fixing action of the main connecting arm and the secondary connecting arm in the switching-on process of the brake arm, thereby generating a bending upwards and arching state, but if the secondary brake shoe generates metal fatigue if the secondary brake shoe is only subjected to elastic deformation during the switching-on process of the brake arm, and the secondary brake shoe is broken and damaged due, meanwhile, if only the secondary brake shoe is elastically deformed, the steel shape capacity of the secondary brake shoe is reduced, and the secondary brake shoe cannot be better attached to the surface of a brake disc to perform braking operation in the elastic deformation rising process, so that by combining the points, a user has to consider the possible problems after long-time use, and therefore, by additionally arranging the elastic bending mechanism between the main connecting arm and the secondary brake shoe, most elastic deformation is borne by the elastic connecting block body in the elastic bending mechanism during normal closing braking, so that the secondary brake mechanism can meet the requirement that the elastic deformation arches the surface of the attached brake disc to perform auxiliary braking during auxiliary braking, and can also meet the steel shape capacity of the secondary brake shoe to better attach to the surface of the brake disc, wherein the elastic connecting block body is connected with an external part through the connecting groove and the inserting block, the double-headed bolt column and the nuts at two ends are screwed up and fixed, so that the elastic bending mechanism can be detachably mounted, and a user can replace the elastic bending mechanism after the elastic bending mechanism is damaged for a long time, thereby prolonging the service life of the device, reducing resource waste, and additionally arranging the elastic reinforcing ribs in the elastic connecting block, so that the elastic connecting block has better elastic deformation capacity and firm effect, repeated and frequent bending action is met, the elastic connecting block is not easy to damage, frequent action vibration of the elastic bending mechanism is reduced, the probability that the double-headed bolt nut is loosened and falls off at the position of the elastic connecting block is reduced, the screwing and rotating directions of the double-headed bolt nut are opposite, other parts are combined through the mechanism, and the probability that the double-headed bolt nut is loosened and falls.

Preferably, adjustment mechanism just rotates the groove and is connected with the through-hole groove including seting up the rotation groove at brake arm bottom surface, rotate groove and through-hole groove both and be cross structure and distribute, the inside swing joint who rotates the groove has the cavity rotary disk, and the cavity rotary disk cup joints on inferior linking arm and with inferior linking arm threaded connection, buffer spring has been cup jointed to the surface of inferior linking arm, and buffer spring is located between first spacing bolt and the main linking arm.

By adopting the technical scheme, when the device works, the adjusting mechanism is used for connecting, fixing and adjusting the main connecting arm and the secondary connecting arm in the secondary braking mechanism and the brake arm, the secondary braking mechanism is used for assisting braking by arching and adhering to the brake disc through the brake arm switching-on differential elastic deformation, but in the actual use process, a user needs to consider the maximum bending deformation range of the elastic bending mechanism and still can cause the whole secondary braking mechanism to be damaged once the maximum bending range is exceeded, so that the adjustment through the material and the structural elastic deformation is obviously insufficient, the distance between the secondary braking mechanism and the brake disc needs to be adjusted, the distance between the secondary braking mechanism and the brake disc is pressed when the distance between the secondary braking mechanism meets the requirement of switching-on, and the secondary brake shoe is better adhered to the brake disc for assisting braking, therefore, the adjusting mechanism is added in the device, when the brake is used, the hollow rotating disc rotates in the rotating groove, the position of the secondary connecting arm on the brake arm is adjusted by utilizing the threaded connection of the hollow rotating disc and the secondary connecting arm, so that the distance between the brake arm and the secondary brake shoe is adjusted, the distance between the brake disc and the secondary brake shoe is conveniently and better adjusted by a user, the elastic deformation distance during switching-on is met, the secondary brake mechanism is pressed by frequent switching-on, wherein the extrusion acting force between the secondary connecting arm and the brake arm is also the key influencing the safe operation of equipment, if the pressing force between the hollow rotating disc and the secondary connecting arm is too large, the thread opening is broken, the fixing effect is unstable, and the adjusting mechanism cannot be normally used, therefore, the buffer spring is sleeved between the brake arm and the main connecting arm, so that the inertial acting force of the brake arm is buffered by the buffer spring in the repeated switching-on process, and the excessive inertia impact is reduced, so that the vibration amplitude of the hollow rotary disk is within a reasonable and controllable range, the probability of damage to the threaded connection part of the hollow rotary disk and the secondary connecting arm is reduced, and the normal use of the adjusting mechanism is ensured.

Preferably, the upper side and the lower side of the outer surface of the front end of the rotating groove are both provided with inserting grooves communicated with the rotating groove, the inserting grooves are distributed in a triangular structure, rubber blocks are arranged in the inserting grooves, the rubber blocks are also in a triangular structure and are matched with the inserting grooves, the rubber blocks are movably connected with the inserting grooves, and two adjacent inclined planes of the rubber blocks are tightly attached to the annular side face of the hollow rotating disc.

By adopting the technical scheme, when the device works, the repeated switching-on action of the brake can cause the inevitable vibration or shake of the whole device, therefore, the fixation after the adjustment of the adjusting mechanism is very important, if the hollow rotating disk adjusts the position of the secondary connecting arm, the hollow rotating disk generates abnormal rotation under the vibration or shaking action of the equipment, the main connecting arm and the secondary connecting arm on the brake arms at two sides can not be fixed, and the lengths are inconsistent, so that the brake arms are stressed unevenly and are bent and damaged, therefore, the splicing grooves are arranged at the upper side and the lower side of the rotating groove in which the hollow rotating disk is arranged, and the rubber block is inserted in the insertion groove, and the rubber block is inserted to generate elastic deformation to be tightly attached to the surface of the hollow rotating disc to fix the rotating angle of the hollow rotating disc, so that the phenomenon that the hollow rotating disc is abnormally loosened and rotated in the working process of equipment is avoided, and the probability of damage of a secondary braking mechanism is reduced.

Preferably, the annular side face of the hollow rotating disc is provided with teeth, the whole hollow rotating disc is integrally cast and formed, and the hollow rotating disc is matched with the rotating groove and movably connected with the rotating groove.

Through adopting above-mentioned technical scheme, cavity rotary disk surface sets up and is that tooth on the one hand is used for external power equipment drive cavity rotary disk to rotate the position of adjusting inferior linking arm on the brake arm in rotating the groove, and on the other hand is for better interlock rubber block prevents its rotation, prescribes a limit to the turned angle of cavity rotary disk in rotating the groove, and the position of fixed cavity rotary disk guarantees two-stage brake mechanism's stability.

Preferably, the diameter of the hollow rotating disc is larger than that of the rotating groove, and one third of the annular side surface of the hollow rotating disc is exposed outside the rotating groove.

Through adopting above-mentioned technical scheme, the person of facilitating the use contacts the naked leak department of hollow rotary disk through manual or external drive equipment to the rotation of drive hollow rotary disk, the person of facilitating the use adjusts the interval between second grade brake shoe and the brake disc in the second grade arrestment mechanism through adjustment mechanism.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, a secondary braking mechanism is added on the basis of a traditional safety brake, a brake arm is skillfully applied to switch on under the condition of electromagnet power-off traction, when a brake shoe brake encircles a brake disc, a main connecting arm and a secondary connecting arm in the secondary braking mechanism connected with the hinged part at the bottom end of the brake arm are fixed to compress the secondary braking mechanism to force the secondary braking mechanism to bend upwards and arch the secondary braking mechanism, so that a secondary brake shoe and a brake pad bend upwards and generate displacement at a certain distance, and then the secondary brake shoe and the brake pad are contacted with the surface of the annular bottom end of the brake disc to brake the brake disc in an auxiliary way, so that larger inertia force generated in the process of closing and encircling the brake shoe and the brake disc in the braking process is uniformly dispersed, and the secondary braking mechanism can be added to assist in increasing the braking force, increasing the braking;

2. the invention is based on the two-stage brake mechanism and is additionally provided with a series of structural components such as an elastic blade, a connecting block and the like which can be detached by massage, when in normal use, the brake pad is used as a normal brake mechanism for auxiliary braking, when the brake disc and the whole brake need to be repaired and maintained, the brake and the brake disc external driver can be adjusted to a maintenance mode, and the brake disc is provided with the connecting block and the elastic blade, then the brake disc is controlled to slowly rotate and carry out closing rotation, at the moment, the elastic blade is pushed upwards under the action of the secondary braking mechanism and is elastically attached to the surface of the brake disc, the oil stain on the surface of the steel wire rope is scraped to clean oil stain dust attached to the surface of the steel wire rope, the structure is convenient for workers to perform auxiliary maintenance, better clearance to the brake disc guarantees that the brake disc surface is clean and tidy, makes equipment possess reliable and safe braking effect in subsequent braking process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a structural view of the two-stage braking mechanism of the present invention;

FIG. 3 is a structural view of the adjustment mechanism of the present invention;

FIG. 4 is a view of the combination of the hollow rotary disk of the present invention with a rotary slot and a rubber block;

FIG. 5 is a structural view of the resilient bending mechanism of the present invention;

FIG. 6 is a combination view of the brake pad of the present invention and a secondary brake shoe;

fig. 7 is a combined view of the slider and the chute of the present invention.

Description of reference numerals:

1. a base body; 11. a brake arm; 12. a screw; 13. braking a shoe brake; 14. a brake disc; 15. a spring body; 16. a reed gauge; 17. a brake lever; 18. a plunger; 19. an electromagnet; 2. a secondary braking mechanism; 21. a secondary brake shoe; 211. a chute; 212. a threaded hole; 22. a brake pad; 221. a connecting groove is arranged inside; 222. an elastic blade; 223. connecting blocks; 224. a slider; 23. a primary connecting arm; 24. a secondary connecting arm; 25. fixing the bolt; 3. an adjustment mechanism; 31. a first limit bolt; 32. a second limit bolt; 33. a hollow rotating disc; 34. a buffer spring; 35. a rotating groove; 36. inserting grooves; 37. a rubber block; 38. a through hole slot; 4. an elastic bending mechanism; 41. an elastic connecting block; 42. elastic reinforcing ribs; 43. connecting grooves; 44. a stud post; 45. and (6) plugging the blocks.

Detailed Description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a technical solution:

as shown in fig. 1 to 7, an elevator safety brake comprises a brake main body consisting of a base main body 1, two brake arms 11, a screw 12, two brake shoes 13, a brake disc 14, two spring main bodies 15, a spring scale 16, a brake lever 17, a plunger 18 and an electromagnet 19, wherein a secondary brake mechanism 2 is arranged at the bottom end of each of the two brake arms 11;

the second-stage brake mechanism 2 comprises a second-stage brake shoe 21, a brake pad 22, a main connecting arm 23, a secondary connecting arm 24, an elastic bending mechanism 4 and a fixing bolt 25, the brake pad 22 is arranged on the upper end face of the second-stage brake shoe 21, the upper end face of the brake pad 22 is tightly attached to the annular side face of the brake disc 14, the outer surface of the lower end of the second-stage brake shoe 21 penetrates through the fixing bolt 25, the elastic bending mechanism 4 is arranged at the two ends of the second-stage brake shoe 21, one end, far away from the second-stage brake shoe 21, of the elastic bending mechanism 4 is respectively provided with the main connecting arm 23 and the secondary connecting arm 24, the main connecting arm 23 and the secondary connecting arm 24 are fixedly installed, the cross section of the main connecting arm 23 is of a rectangular structure, the secondary connecting arm 24 is integrally distributed into a cylindrical structure, the bottom end surface of the secondary connecting arm is provided with threads, the, the upper end surface of the slide block 224 is fixedly connected with the brake pad 22, the slide block 224 and the sliding groove 211 are in a T-shaped structure and are matched and connected in a sliding manner, the brake pad 22 and the secondary brake shoe 21 are installed in a matched manner, the length size and the specification of the two brake pads are completely matched, the slide block 224 is in sliding connection with the sliding groove 211, a user can conveniently install the brake pad 22 on the secondary brake shoe 21 and can fixedly connect the two brake pads through the bottom end fixing bolt 25, the structure is convenient for the user to disassemble and replace the brake pad 22, the service life of the device is prolonged, a threaded hole 212 is formed in the position, close to the fixing bolt 25, of the lower end surface of the secondary brake shoe 21, a corresponding threaded groove is also formed in the position, close to the threaded hole 212, of the slide block 224, the fixing bolt 25 is in threaded connection through the threaded hole 212, the brake pad 22 and the secondary brake shoe 21 are fixedly connected, the inner part of the built-in connecting groove 221 is movably provided with a connecting block 223, the upper side of the outer surface of the connecting block 223 is symmetrically and fixedly provided with elastic blades 222, the angle between each elastic blade 222 and the brake pad 22 is 13-15 degrees, each elastic blade 222 is made of a ductile metal material, the top end of the brake pad 22 is provided with a corrugated friction area surface, and compared with a common smooth friction surface, the corrugated friction area surface can be better contacted with the brake disc 14, so that the friction force between the corrugated friction area surface and the brake disc 14 is increased;

the bottom ends of the two brake arms 11 are provided with through hole grooves 38 near the bottom end of the secondary connecting arm 24, the bottom end of the secondary connecting arm 24 penetrates through the brake arms 11 through the through hole grooves 38, two side surfaces of each brake arm 11 are respectively provided with a first limiting bolt 31 and a second limiting bolt 32 which are sleeved on the secondary connecting arm 24, the first limiting bolt 31 is positioned on the upper side of the second limiting bolt 32, the rotating directions of the threads of the first limiting bolt 31 and the second limiting bolt 32 are opposite, an adjusting mechanism 3 is arranged inside each through hole groove 38, and by adding the secondary braking mechanism 2 into the device, when the brake arms 11 are skillfully applied to brake by encircling the brake disc 14 through the brake shoe 13, the secondary braking mechanism 2 is compressed to force the brake shoes to bend upwards and arch up to contact the annular bottom end surface of the brake disc 14 to assist in braking, so that the braking inertia force is uniformly dispersed, increase braking effect, the user can be according to the user demand at brake disc 14 installation elastic blade 222 start-up debugging mode when needing the maintenance simultaneously, and brake disc 14 slowly rotates and contacts with elastic blade 222, scrapes the adnexed greasy dirt on getting brake disc 14 surface, improves braking effect.

As an embodiment of the present invention, the elastic bending mechanism 4 includes elastic connecting blocks 41, the elastic connecting blocks 41 are distributed in an arc structure, a plurality of sets of elastic reinforcing ribs 42 are disposed inside the elastic connecting blocks 41, the elastic connecting blocks 41 are made of a ductile metal material, the outer surfaces of the elastic connecting blocks 41 are coated with an anti-rust coating, two ends of the elastic connecting blocks 41 are both provided with connecting grooves 43 having the same size and specification, the inside of the connecting grooves 43 is provided with inserting blocks 45, the inserting blocks 45 inside the two connecting grooves 43 are respectively fixedly connected with the secondary brake shoe 21 and the main connecting arm 23 in an integrated manner, two stud columns 44 penetrate through the positions of two ends of the outer surface of the elastic connecting blocks 41 close to the connecting grooves 43, two ends of the stud columns 44 are both in threaded connection with fixing nuts, the two fixing nuts are opposite to the threaded regions of two ends of the stud columns 44 in rotation direction, the plug block 45 and the plug groove 36 are matched with each other and are installed in a seamless fit mode, a rubber pad is glued to the outer surface of the plug block 45, the rubber pad is prevented from being in direct contact with the plug block and the plug groove, the friction damage degree is reduced, when the device works, the secondary braking mechanism 2 is added, the brake arm 11 is skillfully applied when the brake arm is switched on and the brake shoe 13 encircles the brake disc 14, the secondary braking mechanism 2 is compressed to force the brake arm to be bent upwards and arched to contact the annular bottom end surface of the brake disc 14 to brake the annular bottom end surface of the brake disc 14, so that the braking inertia force is uniformly dispersed, the braking effect is improved, when the device is used, the secondary brake shoe 21 is made of elastic metal materials, and the secondary brake shoe 21 and the brake shoe 22 can be forced to be elastically deformed to be bent upwards and arched under the supporting and fixing effects of the main connecting, however, if the secondary brake shoe 21 is subjected to metal fatigue only through the elastic deformation of the secondary brake shoe 21, and the secondary brake shoe 21 is subjected to local overhigh temperature due to repeated elastic deformation, so that the secondary brake shoe 21 is broken and damaged, and meanwhile, if the secondary brake shoe 21 is subjected to elastic deformation only, the steel shape capacity of the secondary brake shoe 21 is reduced, and the secondary brake shoe 21 cannot be better attached to the surface of the brake disc 14 to perform braking operation in the elastic deformation rising process, so that the user has to consider the possible problems in the long-term use by combining the above points, so that the elastic bending mechanism 4 is additionally arranged between the main connecting arm 23 and the secondary brake shoe 21, and most of the elastic deformation of the secondary brake shoe is borne by the elastic connecting block 41 in the elastic bending mechanism 4 during normal closing braking, so that the secondary brake mechanism 2 can meet the requirement that the elastic deformation arches the surface of the brake disc 14 during auxiliary braking The surface is subjected to auxiliary braking, and the steel-shaped capacity of the secondary brake shoe 21 can be met, so that the secondary brake shoe can be better attached to the surface of the brake disc 14, wherein the body of the elastic connecting block 41 is connected with an external part through the connecting groove 43 and the inserting block 45 and is screwed and fixed through the stud post 44 and nuts at two ends, so that the elastic bending mechanism 4 can be detachably mounted, and can be replaced after being damaged for a long time by a user, thereby prolonging the service life of the device and reducing resource waste, and the elastic reinforcing rib 42 is additionally arranged in the elastic connecting block 41, so that the elastic connecting block 41 has better elastic deformation capacity and firm and stable effect, repeated and frequent bending actions are met, the device is not easy to damage, frequent action vibration of the elastic bending mechanism 4 is realized, and in order to reduce the probability that the stud at the elastic connecting block 41 is loosened and the nut falls off, the screwing direction of the stud is opposite, through the combination of the mechanism and other parts, the probability of loosening and falling can be reduced.

As an embodiment of the present invention, the adjusting mechanism 3 includes a rotating groove 35 formed on the bottom end surface of the brake arm 11, the rotating groove 35 is connected with a through hole groove 38, the rotating groove 35 and the through hole groove 38 are both distributed in a cross structure, a hollow rotating disc 33 is movably connected inside the rotating groove 35, the hollow rotating disc 33 is sleeved on the secondary connecting arm 24 and is in threaded connection with the secondary connecting arm 24, a buffer spring 34 is sleeved on the outer surface of the secondary connecting arm 24, and the buffer spring 34 is located between the first limit bolt 31 and the primary connecting arm 23, when in use, the adjusting mechanism 3 is used for connecting, fixing, adjusting and using the primary connecting arm 23, the secondary connecting arm 24 and the brake arm 11 in the secondary braking mechanism 2, when in use, the secondary braking mechanism 2 is used, by closing difference elastic deformation of the brake arm 11, the secondary braking mechanism arches and fits the brake disc 14 for auxiliary braking, but in the actual use, a user needs to consider the maximum bending deformation range of the elastic, once the maximum bending range is exceeded, the secondary braking mechanism 2 is damaged integrally, so that the adjustment of the elastic deformation of the material and the structure is obviously insufficient, the distance between the secondary braking mechanism 2 and the brake disc 14 needs to be adjusted, the distance between the secondary braking mechanism 2 and the brake disc 14 is enabled to meet the requirement that the secondary braking mechanism 2 is pressed when the brake is switched on, the secondary brake shoe 21 is enabled to better fit the brake disc 14 for auxiliary braking, therefore, by adding the adjusting mechanism 3 into the device, a user adjusts the distance between the brake arm 11 and the secondary brake shoe 21 by rotating the hollow rotating disc 33 in the rotating groove 35 and utilizing the threaded connection between the hollow rotating disc 33 and the secondary connecting arm 24 to adjust the position of the secondary connecting arm 24 on the brake arm 11, and the user can conveniently adjust the distance between the brake disc 14 and the secondary brake shoe 21 to meet the elastic deformation distance when the brake is switched on, through frequent switching-on, oppress second grade arrestment mechanism 2, wherein the extrusion effort between inferior linking arm 24 and the stopper arm 11 also is the key that influences equipment safe operation, if the dynamics of oppressing between cavity rotary disk 33 and the inferior linking arm 24 is too big then can lead to the fracture of screw thread mouth, cause fixed effect unstability, and adjustment mechanism 3 can't normal use, consequently through cup jointing buffer spring 34 between stopper arm 11 and main linking arm 23, make it cushion its inertial force through buffer spring 34 at the in-process of switching-on repeatedly, reduce too big inertial impact, make its vibration amplitude within reasonable controllable range, reduce the probability that cavity rotary disk 33 and inferior linking arm 24 threaded connection department damaged, guarantee the normal use of adjustment mechanism 3.

As an embodiment of the present invention, insertion grooves 36 communicated with the rotation groove 35 are formed on both upper and lower sides of the outer surface of the front end of the rotation groove 35, the insertion grooves 36 are distributed in a triangular structure, a rubber block 37 is arranged inside the insertion groove 36, the rubber block 37 is also matched with the insertion groove 36 in a triangular structure, the rubber block 37 is movably connected with the insertion groove 36, adjacent inclined surfaces of the two rubber blocks 37 are tightly attached to the annular side surface of the hollow rotating disc 33, when the brake works, the repeated closing action of the brake can cause inevitable vibration or shake of the whole device, so that the fixation after the adjustment of the adjustment mechanism 3 is very important, if the hollow rotating disc 33 adjusts the position of the secondary connecting arm 24, the hollow rotating disc 33 generates abnormal rotation under the vibration or shake of the device, the main connecting arm 23 and the secondary connecting arm 24 on the brake arms 11 on both sides can not be fixed, and the lengths are inconsistent, so that the hollow rotating disk 33 is stressed unevenly and is bent and damaged, the inserting grooves 36 are formed in the upper side and the lower side of the rotating groove 35 in which the hollow rotating disk 33 is positioned, the rubber blocks 37 are inserted into the inserting grooves 36, the rubber blocks 37 are inserted to generate elastic deformation, and the elastic deformation is tightly attached to the surface of the hollow rotating disk 33 to fix the rotating angle of the hollow rotating disk, so that the phenomenon that the hollow rotating disk loosens and rotates abnormally in the working process of equipment is avoided, and the damage probability of the secondary braking mechanism 2 is reduced.

In an embodiment of the present invention, the annular side surface of the hollow rotating disc 33 is provided with teeth, and the hollow rotating disc 33 is integrally cast, the hollow rotating disc 33 is engaged with and movably connected with the rotating groove 35, and the teeth are arranged on the surface of the hollow rotating disc 33, on one hand, the teeth are used for external power equipment to drive the hollow rotating disc 33 to rotate in the rotating groove 35 to adjust the position of the secondary connecting arm 24 on the brake arm 11, on the other hand, the teeth are used for better engaging the rubber block 37 to prevent the hollow rotating disc 33 from rotating, so as to define the rotating angle of the hollow rotating disc 33 in the rotating groove 35, fix the position of the hollow rotating disc 33, and ensure the stability of the secondary braking mechanism 2.

Specifically, the diameter of the hollow rotating disc 33 is larger than that of the rotating groove 35, and one third of the annular side surface of the hollow rotating disc 33 is exposed outside the rotating groove 35, so that a user can conveniently contact the exposed part of the hollow rotating disc 33 through manual or external driving equipment, the hollow rotating disc 33 is driven to rotate, and the user can conveniently adjust the distance between the secondary brake shoe 21 and the brake disc 14 in the secondary braking mechanism 2 through the adjusting mechanism 3.

Has the advantages that:

the invention adds the secondary braking mechanism 2 on the basis of the traditional safety brake, skillfully applies the brake arm 11 to be switched on under the power-off traction of the electromagnet 19, when the brake is carried out by encircling the brake disc 14 by the brake shoe brake 13, the main connecting arm 23 and the secondary connecting arm 24 in the secondary braking mechanism 2 connected with the hinged position of the bottom end of the brake arm 11 are fixed to compress the secondary braking mechanism 2 to force the secondary braking mechanism 2 to bend and arch upwards, so that the secondary brake shoe 21 and the brake pad 22 bend upwards and generate displacement with a certain distance, and then contact the surface of the annular bottom end of the brake disc 14 to assist the brake, thereby uniformly dispersing larger inertia force generated in the process of encircling the brake shoe brake 13 and the brake disc 14 in the braking process, and increasing the braking force by increasing the secondary braking mechanism 2 to assist the increase of the braking effect and improve the braking time of the equipment, reducing the braking reaction process;

the invention is based on a series of structural components such as an elastic blade 222 and a connecting block 223 which can be detached by massage are additionally arranged on the basis of a secondary braking mechanism 2, when the brake disc 14 and the whole brake are required to be overhauled and maintained, the brake and a driver outside the brake disc 14 can be adjusted to be in an overhauling mode when the brake disc 22 is normally used, the connecting block 223 and the elastic blade 222 are arranged on the brake disc 22, then the brake disc 14 is controlled to slowly rotate and carry out switching-on rotation, at the moment, the elastic blade 222 can be pushed upwards under the action of the secondary braking mechanism 2 and elastically attached to the surface of the brake disc 14 to scrape oil stains on the surface of the brake disc 14, and oil stains and dust attached to the surface of the brake disc are cleaned off, the structure is convenient for workers to carry out auxiliary overhauling, the brake disc 14 is better cleaned, and the surface of the brake disc 14 is ensured to be, the device has reliable and safe braking effect in the subsequent braking process.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an elevator safety brake, includes by base main part (1), two brake arms (11), screw rod (12), two brake shoes floodgate (13), brake disc (14), two spring main parts (15), spring scale (16), brake lever (17), plunger (18) and electro-magnet (19) the stopper main part of constituteing, its characterized in that: the bottom ends of the two brake arms (11) are provided with a secondary brake mechanism (2);

second grade brake mechanism (2) include second grade brake shoe (21), brake lining (22), main link arm (23), inferior link arm (24), elasticity bending mechanism (4) and fixing bolt (25) constitute, brake lining (22) set up the up end at second grade brake shoe (21), and the up end of brake lining (22) hugs closely the annular side of brake disc (14), fixing bolt (25) are run through to the lower extreme surface of second grade brake shoe (21), the both ends of second grade brake shoe (21) all set up elasticity bending mechanism (4), and elasticity bending mechanism (4) keep away from the one end of second grade brake shoe (21) and set up main link arm (23) and inferior link arm (24) respectively, and main link arm (23) and inferior link arm (24) fixed mounting, main link arm (23) cross-section is the rectangle structure, and inferior link arm (24) wholly become the column structure and distribute, the bottom end surface of the brake shoe is provided with threads, the upper end surface of the secondary brake shoe (21) is provided with a sliding groove (211), a sliding block (224) is arranged inside the sliding groove (211), the upper end surface of the sliding block (224) is fixedly connected with the brake pad (22), the sliding block (224) and the sliding groove (211) are in a T-shaped structure and are mutually inosculated and in sliding connection, the brake pad (22) and the secondary brake shoe (21) are installed in a matched mode, the length size and the specification of the brake pad and the secondary brake shoe are completely matched, the position, close to the fixing bolt (25), of the lower end surface of the secondary brake shoe (21) is provided with a threaded hole (212), the position, close to the threaded hole (212), of the sliding block (224) is also provided with a corresponding threaded groove, the fixing bolt (25) is in threaded connection through the threaded hole (212), the brake pad (22) and the secondary brake shoe (21) are fixedly connected, the center position of the upper, a connecting block (223) is movably mounted inside the built-in connecting groove (221), elastic blades (222) are symmetrically and fixedly mounted on the upper side of the outer surface of the connecting block (223), the angle between each elastic blade (222) and the corresponding brake pad (22) is 13-15 degrees, each elastic blade (222) is made of a tough metal material, and a corrugated friction area surface is arranged at the top end of each brake pad (22);

two through-hole groove (38) have been seted up to the position that brake arm (11) bottom is close to inferior linking arm (24) bottom, the bottom of inferior linking arm (24) runs through brake arm (11) through-hole groove (38), and brake arm (11) both sides face is provided with first stop bolt (31) and second stop bolt (32) of cup jointing on inferior linking arm (24) respectively, first stop bolt (31) are located the upside of second stop bolt (32), first stop bolt (31) are opposite with second stop bolt (32) screw thread direction of rotation, and the inside in through-hole groove (38) is provided with adjustment mechanism (3).

2. An elevator safety brake as defined in claim 1, characterized in that: the elastic bending mechanism (4) comprises an elastic connection block (41), the elastic connection block (41) is distributed in an arc-shaped structure, a plurality of groups of elastic reinforcing ribs (42) distributed equidistantly are arranged inside the elastic connection block (41), the elastic connection block (41) is made of a ductile metal material, the outer surface of the elastic connection block is coated with antirust coating, two connection grooves (43) with the same size and specification are formed in the two ends of the elastic connection block (41), insertion blocks (45) are arranged inside the connection grooves (43), the two insertion blocks (45) inside the connection grooves (43) are respectively and fixedly connected with a secondary brake shoe (21) and a main connection arm (23) in an integrated mode, two double-headed columns (44) are respectively penetrated through positions, close to the connection grooves (43), of the two ends of the outer surface of the elastic connection block (41), and fixing nuts are respectively connected with the two ends of the double-headed bolt columns (44) in a threaded mode, the two fixing nuts and the two end thread regions of the stud column (44) are opposite in rotating direction, the insertion block (45) and the insertion groove (36) are matched with each other and installed in a seamless fit mode, and the outer surface of the insertion block (45) is connected with a rubber pad in a gluing mode.

3. An elevator safety brake as defined in claim 1, characterized in that: adjustment mechanism (3) are including offering rotation groove (35) at brake arm (11) bottom surface, and rotate groove (35) and be connected with through-hole groove (38), it distributes to rotate both cross structures in groove (35) and through-hole groove (38), the inside swing joint who rotates groove (35) has cavity rotary disk (33), and cavity rotary disk (33) cup joint on inferior connecting arm (24) and with inferior connecting arm (24) threaded connection, buffer spring (34) have been cup jointed to the surface of inferior connecting arm (24), and buffer spring (34) are located between first stop bolt (31) and main connecting arm (23).

4. An elevator safety brake as defined in claim 1, characterized in that: the utility model discloses a hollow rotary disk (33) of building, including rotation groove (35), rubber piece (37) and hollow rotary disk (33), rotation groove (35)'s front end surface both sides about both sides all seted up with rotation groove (35) communicating inserting groove (36), inserting groove (36) are the triangle structure and distribute, and the inside of inserting groove (36) is provided with rubber piece (37), rubber piece (37) also are the triangle structure and match each other with inserting groove (36), rubber piece (37) and inserting groove (36) swing joint, two the adjacent inclined plane of rubber piece (37) all closely laminates with hollow rotary disk (33) annular side.

5. An elevator safety brake as defined in claim 1, characterized in that: the tooth is arranged on the annular side face of the hollow rotating disc (33), the hollow rotating disc (33) is integrally cast, and the hollow rotating disc (33) is matched and movably connected with the rotating groove (35).

6. An elevator safety brake as defined in claim 5, characterized in that: the diameter of the hollow rotating disc (33) is larger than that of the rotating groove (35), and one third of the annular side surface of the hollow rotating disc (33) is exposed outside the rotating groove (35).