CN115451068A - Novel double-support efficient safe traction machine - Google Patents

Abstract

The invention relates to the technical field of a traction machine, in particular to a novel double-support high-efficiency safe traction machine, which is used for solving the technical problems that the existing traction machine can generate larger vibration to impact a mounting seat and a traction machine body when in work, the common mounting seat can not well buffer the vibration, the mounting seat and the traction machine body can be damaged along with the long-time use of the traction machine, the normal work of the traction machine body can not be ensured, and the service life of the traction machine body is reduced; compared with the prior art, the invention can well buffer and absorb the vibration generated by the traction machine, can ensure the normal work of the traction machine body and prolongs the service life of the traction machine body.

Description

Novel double-support efficient safe traction machine

Technical Field

The invention relates to the technical field of traction machines, in particular to a novel double-support efficient safe traction machine.

Background

The tractor is also called elevator main machine, is power equipment of elevator, and is formed from motor, brake, coupling, reduction box, traction wheel, machine frame, guide wheel and auxiliary jigger hand wheel. Its function is to transport and transmit power to run the elevator.

The existing tractor can generate large vibration to impact the mounting seat and the tractor body when in work, the common mounting seat cannot buffer the vibration well, the mounting seat and the tractor body can be damaged along with the long-time use of the tractor, the normal work of the tractor body cannot be ensured, the service life of the tractor body is shortened, and different mounting seats need to be replaced when the height of the tractor is adjusted due to the high fixation of the mounting seat, so that the work efficiency is reduced; meanwhile, most of brake discs installed on the existing traction machine are cooled through the through holes which are arranged in a penetrating mode, so that the heat dissipation performance and the heat dissipation balance of the brake discs are poor, the braking performance of the brake disc 17 is reduced, the braking torque of a safety braking system is reduced, and the normal work of the traction machine cannot be guaranteed.

Disclosure of Invention

The invention aims to provide a novel double-support high-efficiency safe traction machine, which is used for solving the problems that the existing traction machine can generate larger vibration to impact an installation seat and a traction machine body when in work, the common installation seat can not well buffer the vibration, the installation seat and the traction machine body can be damaged along with the long-time use of the traction machine, the normal work of the traction machine body can not be ensured, the service life of the traction machine body is shortened, and different installation seats are required to be replaced when the height of the traction machine is adjusted due to the high fixation of the installation seat, so that the work efficiency is reduced; meanwhile, most of brake discs installed on the existing traction machine are cooled through the through holes which are arranged in a penetrating mode, so that the heat dissipation performance and the heat dissipation balance of the brake discs are poor, the braking performance of the brake disc 17 is reduced, the braking torque of a safety braking system is reduced, and the normal work of the traction machine cannot be guaranteed.

The purpose of the invention can be realized by the following technical scheme:

novel high-efficient safe type hauler of dual bracing, including hauler body and shock attenuation mounting structure, its characterized in that, the hauler body comprises mount bearing system, safety braking system, gear train speed change system and permanent-magnet machine transmission actuating system, and mount bearing system includes the frame, dual bracing fore-stock and dual bracing frame support, and safety braking system includes the driving sheave pivot, the driving sheave, the dish stopper and brake disc of stopping, and gear train speed change system includes gear box, output secondary gear, transmission secondary gear, input one-level gear and transmission one-level gear, and permanent-magnet machine transmission actuating system includes transmission shaft, transmission motor casing, transmission motor stator, transmission motor rotor, transmission motor pivot and transmission motor end cover, shock attenuation mounting structure includes bottom plate and shock attenuation mount pad, the symmetry is equipped with the crane on the bottom plate top both ends outer wall.

Further, one side that the bottom plate was kept away from to the crane is equipped with driving motor, be equipped with the worm on the driving motor output, the cover is equipped with the slip cap on the worm, two fixedly connected with shock attenuation mount pad between the slip cap, the one end that the shock attenuation mount pad was kept away from to the slip cap is equipped with the slider with crane inner wall looks sliding connection, the top of shock attenuation mount pad is provided with places the seat, the middle part of shock attenuation mount pad is provided with the memory shell fragment, the bottom symmetry of placing the seat is provided with all around and places the first connecting rod that the seat links to each other, the middle part fixedly connected with of shock attenuation mount pad carries out fixed spacing second connecting rod to memory shell fragment and first connecting rod, the both ends symmetry of second connecting rod is provided with the first reset spring who is used for the buffering.

Furthermore, a buffer groove is formed in the top of the shock absorption mounting seat, a limiting groove is formed in the middle of an inner cavity of the buffer groove, four second connecting rods are arranged, sliding connecting blocks are symmetrically sleeved at two ends of the two second connecting rods, first reset springs are arranged on the back sides of the sliding connecting blocks, one ends, away from the placing seat, of the first connecting rods are movably connected with the sliding connecting blocks, one ends, away from the sliding connecting blocks, of the first connecting rods are movably connected with hangers which are fixed to the periphery of the bottom of the placing seat, moving blocks are symmetrically sleeved at two ends of the two second connecting rods in the middle, the first reset springs are arranged on the back sides of the two moving blocks, the tops of the moving blocks are fixedly connected with the bottom wall body of the memory elastic piece, fourth reset springs are arranged in the middle of the two moving blocks, a third connecting rod is fixedly connected with the top of the memory elastic piece, the tops of the third connecting rod are movably connected with the bottom of the placing seat through rolling shafts, and elastic telescopic rods are fixedly connected with the bottom of the memory elastic piece.

Further, the cross sectional shape of the elastic telescopic rod is set to be T-shaped, the bottom end of the elastic telescopic rod extends to the inside of the limiting groove, a third reset spring is arranged at the bottom of the elastic telescopic rod, a second reset spring is sleeved at the bottom end of the elastic telescopic rod, and the third reset spring and the second reset spring are both arranged inside the limiting groove.

Further, place the seat top and seted up the standing groove, be equipped with circular telegram magnet on placing seat bottom middle part inner wall, circular telegram magnet both ends symmetry is equipped with the slide bar, the cover is equipped with the magnetism sliding block on the slide bar, the one end that the magnetism sliding block is close to circular telegram magnet is equipped with the fifth reset spring that the cover was established on the slide bar, magnetism sliding block top is equipped with runs through the standing groove and extends to its inside spacing cardboard, be equipped with the slipmat on the spacing cardboard inside wall.

Further, the brake disc includes disk body and disk hub portion, disk hub portion installs in disk body's middle part, and disk body includes the disk of two relative settings, connects through a plurality of spliced poles between two disks, the disk has the braking face, the disk is provided with a plurality of radiating hole groups, a plurality of radiating hole group are followed the circumference interval of disk sets up, and every the radiating hole group all has the edge a plurality of first louvres of the radial interval arrangement of disk, a plurality of first louvres include first radiating hole section and second radiating hole section, the second radiating hole section is located first radiating hole section is kept away from one side of braking face just the diameter of first radiating hole section is greater than the diameter of second radiating hole section.

Furthermore, each radiating hole group also comprises a second radiating hole penetrating through the disk, the second radiating hole is positioned at one side of the plurality of first radiating holes and is arranged corresponding to one radiating hole group in another disk, and the second radiating hole is coaxially arranged with one first radiating hole in the corresponding radiating hole group.

Further, the maximum depth of the first heat dissipation hole section is larger than or equal to half of the thickness of the disk.

Further, an anti-rust layer is arranged on the inner wall surface of the first heat dissipation hole, the anti-rust layer covers a heat dissipation step surface on the first heat dissipation hole, a heat dissipation protruding portion is arranged on one side, away from the heat dissipation step surface, of the anti-rust layer, and the heat dissipation protruding portion is of an annular structure.

The invention has the following beneficial effects:

1. the tractor body is placed in a placing groove on a placing seat, an electrified magnet attracts a magnetic sliding block to approach the magnetic sliding block, so that two limiting clamping plates are driven to limit and fix the position of the tractor body, when the tractor body shakes during working and shakes left and right, a sliding connecting block is driven to slide in the middle of a second connecting rod through a first connecting rod, and then the first return spring is extruded;

2. after the traction machine body is limited and fixed, the driving motor is started when the height of the traction machine body needs to be adjusted, the driving motor can drive the worm to rotate when working, so that the sliding sleeve can move up and down on the worm, the height of the traction machine body can be adjusted according to actual needs, and the working efficiency is improved;

3. through be provided with a plurality of thermovent groups on the disc, a plurality of first louvres in every thermovent group comprise first thermovent section and second thermovent section, the diameter that the second thermovent section is located the inboard of first thermovent section and first thermovent section is greater than the diameter of second thermovent section, the diameter at the first thermovent section in a plurality of first louvres along the radial outside direction of disc increases gradually, the heat radiating area of disc has not only been increased, the heat dissipation equilibrium performance of disc has still been improved, the radiating effect of disc has been promoted, and then the brake performance of brake disc has been improved, the braking torque of safety braking system has been improved, the normal work of hauler body has been guaranteed.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a traction machine body according to the present invention;

FIG. 2 is a side sectional structure diagram of the traction machine body of the present invention;

fig. 3 is a rear view of the traction machine body of the present invention;

fig. 4 is a side view of the traction machine body of the present invention;

fig. 5 is a schematic view showing a coupling structure of a traction machine body and a shock-absorbing mounting structure according to the present invention;

FIG. 6 is a schematic view of a connection structure of the shock mount and the memory spring plate according to the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 5;

FIG. 8 is a front view of a brake rotor of the present invention;

FIG. 9 is a half sectional view of a first louvers of the present invention.

Reference numerals: 1. a frame; 2. a double-support front bracket; 3. a sheave shaft; 4. a traction sheave; 5. a disc brake; 6. a gear housing; 7. an output secondary gear; 8. a transmission secondary gear; 9. a drive shaft; 10. inputting a first-stage gear; 11. a primary gear is driven; 12. a drive motor housing; 13. a drive motor stator; 14. a drive motor rotor; 15. a transmission motor shaft; 16. a transmission motor end cover; 17. a brake disc; 18. a double-support stand support; 19. a drive motor; 20. a worm; 21. a sliding sleeve; 22. a lifting frame; 23. a base plate; 24. a placing seat; 25. a limiting clamping plate; 26. a first link; 27. a sliding connection block; 28. a first return spring; 29. a shock-absorbing mounting seat; 30. a moving block; 31. memorizing the elastic sheet; 32. a second link; 33. a third link; 34. an elastic telescopic rod; 35. a second return spring; 36. a limiting groove; 37. a third return spring; 38. a fourth return spring; 39. a slide bar; 40. a magnetic slider; 41. a fifth return spring; 42. energizing a magnet; 43. a group of radiating holes; 44. a first heat dissipation hole; 45. a second heat dissipation hole; 46. a disk hub portion; 47. a first heat dissipation hole section; 48. a heat dissipating projection; 49. a rust-proof layer; 50. a heat dissipation step surface; 51. a disk; 52. a second heat dissipating hole section.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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.

Example 1:

the existing tractor can produce great vibrations at the during operation and cause the impact to mount pad and tractor body, and general mount pad can not carry out good buffering to vibrations, can cause the damage to mount pad and tractor body along with the long-time use of tractor, can't guarantee the normal work of tractor body, has reduced the life of tractor body, for solving this problem, and concrete operation is as follows:

as shown in fig. 1-6, the embodiment provides a novel double-support efficient safe traction machine, which includes a traction machine body and a shock-absorbing mounting structure, wherein the traction machine body includes a mounting load-bearing system, a safe braking system, a gear set speed-changing system and a permanent magnet motor transmission driving system, the mounting load-bearing system includes a frame 1, a double-support front bracket 2 and a double-support machine base bracket 18, the safe braking system includes a traction sheave rotating shaft 3, a traction sheave 4, a disc brake 5 and a brake disc 17, the gear set speed-changing system includes a gear box 6, an output secondary gear 7, a transmission secondary gear 8, an input primary gear 10 and a transmission primary gear 11, the permanent magnet motor transmission driving system includes a transmission shaft 9, a transmission motor casing 12, a transmission motor stator 13, a transmission motor rotor 14, a transmission motor rotating shaft 15 and a transmission motor end cover 16, and the shock-absorbing mounting structure includes a bottom plate 23 and a shock-absorbing mounting seat 29; starting a permanent magnet motor driving system, driving a motor rotor 14 to rotate, driving the motor rotor 14 to drive an input primary gear 10 to rotate through a driving motor rotating shaft 15, further sequentially driving a driving primary gear 11, an output secondary gear 7 and a driving secondary gear 8 to rotate, further driving a driving shaft 9 to rotate, driving the traction sheave 4 to rotate through the rotation of the driving shaft 9, and braking the traction sheave 4 through the matching use of a disc brake 5 and a brake disc 17 when the traction sheave 4 rotates to a specified floor;

a placing groove is formed in the top of the placing seat 24, a power-on magnet 42 is arranged on the inner wall of the middle of the bottom end of the placing seat 24, sliding rods 39 are symmetrically arranged at two ends of the power-on magnet 42, a magnetic sliding block 40 is sleeved on the sliding rods 39, a fifth reset spring 41 sleeved on the sliding rods 39 is arranged at one end, close to the power-on magnet 42, of the magnetic sliding block 40, a limiting clamping plate 25 penetrating through the placing groove and extending to the inside of the placing groove is arranged at the top of the magnetic sliding block 40, and an anti-slip pad is arranged on the inner side wall of the limiting clamping plate 25; the traction machine body is placed in a placing groove on a placing seat 24, and the energized magnet 42 attracts the magnetic sliding block 40 to approach the magnetic sliding block, so that the two limiting clamping plates 25 are driven to limit and fix the position of the traction machine body;

a memory elastic sheet 31 is arranged in the middle of the shock absorption mounting seat 29, first connecting rods 26 connected with the placing seat 24 are symmetrically arranged on the periphery of the bottom of the placing seat 24, a second connecting rod 32 for fixing and limiting the memory elastic sheet 31 and the first connecting rods 26 is fixedly connected in the middle of the shock absorption mounting seat 29, and first reset springs 28 for buffering are symmetrically arranged at two ends of the second connecting rod 32; the top of the shock absorption mounting seat 29 is provided with a buffer groove, the middle of an inner cavity of the buffer groove is provided with a limiting groove 36, the number of the second connecting rods 32 is four, two ends of the front and rear second connecting rods 32 are symmetrically sleeved with sliding connecting blocks 27, a first reset spring 28 is arranged on one side opposite to the sliding connecting blocks 27, one end of the first connecting rod 26 far away from the placing seat 24 is movably connected with the sliding connecting blocks 27, one end of the first connecting rod 26 far away from the sliding connecting blocks 27 is movably connected with hangers which are fixed around the bottom of the placing seat 24, two ends of the middle second connecting rod 32 are symmetrically sleeved with moving blocks 30, the first reset spring 28 is arranged on one side opposite to the two moving blocks 30, the top of each moving block 30 is fixedly connected with the bottom wall of the memory elastic sheet 31, the middle of the two moving blocks 30 is provided with a fourth reset spring 38, the top of the memory elastic sheet 31 is fixedly connected with a third connecting rod 33, the top of the third connecting rod 33 is movably connected with the bottom of the placing seat 24 through a rolling shaft, and the bottom of the memory elastic sheet 31 is fixedly connected with an elastic telescopic rod 34; the cross section of the elastic telescopic rod 34 is T-shaped, the bottom end of the elastic telescopic rod 34 extends into the limiting groove 36, a third return spring 37 is arranged at the bottom of the elastic telescopic rod 34, a second return spring 35 is sleeved at the bottom end of the elastic telescopic rod 34, and the third return spring 37 and the second return spring 35 are both arranged inside the limiting groove 36; when the tractor body vibrates during working to enable the tractor body to shake left and right, the sliding connecting block 27 is driven by the first connecting rod 26 to slide in the middle of the second connecting rod 32, so that the first return spring 28 is extruded, a buffering and damping effect is achieved by the reverse acting force of the first return spring 28, when the tractor body vibrates during working to enable the tractor body to shake up and down, the third connecting rod 33 is driven to extrude the memory elastic sheet 31, the memory elastic sheet 31 is deformed, the sliding connecting block 27 is driven to slide in the middle of the second connecting rod 32, so that the first return spring 28 or the fourth return spring 38 is extruded, the movable elastic telescopic rod 34 is driven to extrude the third return spring 37 or the second return spring 35, a buffering and damping effect can be achieved by the reverse acting force of the first return spring 28, the second return spring 35, the third return spring 37 and the fourth return spring 38, meanwhile, the pushing force generated by the recovery of the memory elastic sheet 31 can enhance the buffering and damping strength, the normal working of the tractor body can be guaranteed through the processing, and the service life of the tractor body is prolonged.

Example 2:

the existing tractor needs to replace different mounting seats when the height of the tractor is adjusted due to the high fixation of the mounting seats, so that the work efficiency is reduced, and the tractor is specifically operated as follows for solving the problem:

as shown in fig. 5 and 7, the outer walls of the two ends of the top of the bottom plate 23 are symmetrically provided with lifting frames 22, one side of each lifting frame 22, which is far away from the bottom plate 23, is provided with a driving motor 19, the output end of the driving motor 19 is provided with a worm 20, the worm 20 is sleeved with a sliding sleeve 21, a damping mounting seat 29 is fixedly connected between the two sliding sleeves 21, one end of each sliding sleeve 21, which is far away from the damping mounting seat 29, is provided with a sliding part which is in sliding connection with the inner wall of each lifting frame 22, and the top of each damping mounting seat 29 is provided with a placing seat 24; after the tractor body is limited and fixed, the driving motor 19 is started when the height of the tractor body needs to be adjusted, the driving motor 19 can drive the worm 20 to rotate when working, the sliding sleeve 21 can move up and down on the worm 20, the height of the tractor body can be adjusted according to actual needs, and the working efficiency is improved.

Example 3:

the brake disc of installation is mostly dispelled the heat through the through-hole that runs through the setting on current hauler for brake disc heat dispersion and heat dissipation equilibrium are all relatively poor, have reduced the brake performance of brake disc, have reduced safety braking system's braking torque, can't guarantee the normal work of hauler, for solving this problem, concrete operation is as follows:

as shown in fig. 8 and 9, the brake disk 17 includes a disk body portion and a disk hub portion 46, the disk hub portion 46 is mounted in the middle of the disk body portion, the disk body portion includes two opposite disks 51, the two disks 51 are connected by a plurality of connecting columns, the disks 51 have a braking surface, the disks 51 are provided with a plurality of radiating hole groups 43, the plurality of radiating hole groups 43 are arranged at intervals along the circumferential direction of the disks 51, each radiating hole group 43 has a plurality of first radiating holes 44 arranged at intervals along the radial direction of the disk 51, each of the plurality of first radiating holes 44 is a radiating stepped hole, the radiating stepped hole includes a first radiating hole section 47 and a second radiating hole section 52 connected with each other, the second radiating hole section 52 is located on one side of the first radiating hole section 47 away from the braking surface, the diameter of the first radiating hole section 47 is greater than that of the second radiating hole section 52, the diameter of the first radiating hole section 47 in the plurality of first radiating holes 44 in the radial direction outward of the disks 51 gradually increases, and the depth of the first radiating hole section 47 in the radial direction outward of the plurality of first radiating holes 44 in the disks 51 gradually increases; the maximum depth of the first radiating hole section 47 is more than or equal to half of the thickness of the disc 51, one end of the first radiating hole section 47 is intersected with the braking surface, and a chamfer is arranged at the intersection of the first radiating hole section 47 and the braking surface; an anti-rust layer 49 is arranged on the inner wall surface of the first heat dissipation hole 44, the anti-rust layer 49 covers a heat dissipation step surface 50 on the first heat dissipation hole 44, a heat dissipation convex part 48 is arranged on one side, away from the heat dissipation step surface 50, of the anti-rust layer 49, and the heat dissipation convex part 48 is of an annular structure; the plurality of radiating hole groups 43 are arranged on the disc 51, the plurality of first radiating holes 44 in each radiating hole group 43 are composed of the first radiating hole section 47 and the second radiating hole section 52, the second radiating hole section 52 is positioned on the inner side of the first radiating hole section 47, the diameter of the first radiating hole section 47 is larger than that of the second radiating hole section 52, the diameter of the first radiating hole section 47 in the plurality of first radiating holes 44 along the radial outward direction of the disc 51 is gradually increased, the radiating area of the disc 51 is increased, the radiating balance performance of the disc 51 is improved, the radiating effect of the disc 51 is improved, the braking performance of the brake disc 17 is further improved, the braking torque of a safe braking system is improved, and the normal work of the tractor body is ensured.

Each heat dissipation hole group 43 further comprises a second heat dissipation hole 45 penetrating through the disk 51, the second heat dissipation hole 45 is positioned at one side of the plurality of first heat dissipation holes 44 and is arranged corresponding to one heat dissipation hole group 43 in another disk 51, and the second heat dissipation hole 45 is coaxially arranged with one first heat dissipation hole 44 in the corresponding heat dissipation hole group 43; through the arrangement, the second heat dissipation holes 45 and the first heat dissipation holes 44 coaxial with the second heat dissipation holes can be utilized to form convection enhancement holes, and the heat dissipation effect is further improved.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (9)

1. Novel high-efficient safe type hauler of dual bracing, including hauler body and shock attenuation mounting structure, a serial communication port, the hauler body comprises carry bearing system, safety braking system, gear train variable speed system and permanent-magnet machine transmission actuating system, carry bearing system includes frame (1), dual bracing fore-stock (2) and dual bracing frame support (18), safety braking system includes driving sheave pivot (3), driving sheave (4), dish brake stopper (5) and brake disc (17), gear train variable speed system includes gear box (6), output secondary gear (7), transmission secondary gear (8), input primary gear (10) and transmission primary gear (11), permanent-magnet machine transmission actuating system includes transmission shaft (9), transmission motor casing (12), transmission motor stator (13), transmission motor rotor (14), transmission motor pivot (15) and transmission motor end cover (16), shock attenuation mounting structure includes bottom plate (23) and shock attenuation mount pad (29), be equipped with crane (22) on the outer wall of bottom plate (23) top both ends symmetrically.

2. The novel double-support efficient safety traction machine as claimed in claim 1, wherein a driving motor (19) is arranged on one side, away from a bottom plate (23), of the lifting frame (22), a worm (20) is arranged on an output end of the driving motor (19), a sliding sleeve (21) is sleeved on the worm (20), two damping mounting seats (29) are fixedly connected between the sliding sleeves (21), a sliding piece which is connected with an inner wall of the lifting frame (22) in a sliding mode is arranged at one end, away from the damping mounting seats (29), of the sliding sleeve (21), a placing seat (24) is arranged at the top of the damping mounting seat (29), a memory elastic sheet (31) is arranged in the middle of the damping mounting seat (29), first connecting rods (26) which are connected with the placing seat (24) are symmetrically arranged around the bottom of the placing seat (24), a second connecting rod (32) which is fixedly limited to the memory elastic sheet (31) and the first connecting rod (26) is fixedly connected with the middle of the damping mounting seat (29), and first reset springs (28) which are used for buffering are symmetrically arranged at two ends of the second connecting rod (32).

3. The novel double-support high-efficiency safety traction machine as claimed in claim 2, the top of the shock absorption mounting seat (29) is provided with a buffer groove, the middle part of the inner cavity of the buffer groove is provided with a limit groove (36), the number of the second connecting rods (32) is four, two ends of the front and the back second connecting rods (32) are symmetrically sleeved with sliding connecting blocks (27), the first return spring (28) is arranged on the opposite side of the sliding connecting block (27), one end of the first connecting rod (26) far away from the placing seat (24) is movably connected with the sliding connecting block (27), one end of the first connecting rod (26) far away from the sliding connecting block (27) is movably connected with a suspension loop which is fixed on the periphery of the bottom of the placing seat (24), two moving blocks (30) are symmetrically sleeved at two ends of two second connecting rods (32) in the middle, the first return spring (28) is arranged on the opposite side of the two moving blocks (30), the top of the moving blocks (30) is fixedly connected with the bottom wall body of the memory elastic sheet (31), the middle parts of the two moving blocks (30) are provided with fourth return springs (38), the top of the memory elastic sheet (31) is fixedly connected with a third connecting rod (33), the top of the third connecting rod (33) is movably connected with the bottom of the placing seat (24) through a roller, the bottom of the memory elastic sheet (31) is fixedly connected with an elastic telescopic rod (34).

4. The novel double-support high-efficiency safety traction machine as claimed in claim 3, wherein the cross-sectional shape of the elastic telescopic rod (34) is T-shaped, the bottom end of the elastic telescopic rod (34) extends to the inside of the limiting groove (36), a third return spring (37) is arranged at the bottom of the elastic telescopic rod (34), a second return spring (35) is sleeved at the bottom end of the elastic telescopic rod (34), and the third return spring (37) and the second return spring (35) are both arranged inside the limiting groove (36).

5. The novel double-support efficient safety type traction machine as claimed in claim 4, wherein a placing groove is formed in the top of the placing seat (24), a power-on magnet (42) is arranged on the inner wall of the middle of the bottom end of the placing seat (24), sliding rods (39) are symmetrically arranged at two ends of the power-on magnet (42), a magnetic sliding block (40) is sleeved on the sliding rods (39), a fifth return spring (41) sleeved on the sliding rods (39) is arranged at one end, close to the power-on magnet (42), of the magnetic sliding block (40), a limiting clamping plate (25) penetrating through the placing groove and extending into the placing groove is arranged at the top of the magnetic sliding block (40), and an anti-slip pad is arranged on the inner side wall of the limiting clamping plate (25).

6. The novel double-support efficient safety type traction machine as claimed in claim 1, wherein the brake disc (17) comprises a disc body part and a disc hub part (46), the disc hub part (46) is installed in the middle of the disc body part, the disc body part comprises two oppositely arranged discs (51), the two discs (51) are connected through a plurality of connecting columns, each disc (51) is provided with a braking surface, each disc (51) is provided with a plurality of radiating hole groups (43), the plurality of radiating hole groups (43) are arranged along the circumferential direction of each disc (51) at intervals, each radiating hole group (43) is provided with a plurality of first radiating holes (44) arranged along the radial direction of each disc (51), each first radiating hole (44) comprises a first radiating hole section (47) and a second radiating hole section (52), and the second radiating hole section (52) is located on the side, away from the braking surface, of each first radiating hole section (47) and the diameter of each first radiating hole section (47) is larger than that of each second radiating hole section (52).

7. The novel double-support high-efficiency safe traction machine as claimed in claim 6, wherein each heat dissipation hole group (43) further comprises a second heat dissipation hole (45) penetrating through the disk (51), the second heat dissipation hole (45) is located at one side of the first heat dissipation holes (44) and is arranged corresponding to one heat dissipation hole group (43) in the other disk (51), and the second heat dissipation hole (45) is arranged coaxially with one first heat dissipation hole (44) in the corresponding heat dissipation hole group (43).

8. The new double-support high-efficiency safety traction machine as claimed in claim 7, wherein the maximum depth of the first heat dissipating hole section (47) is greater than or equal to half of the thickness of the disc (51).

9. The novel double-support efficient safety type traction machine as claimed in claim 8, wherein an antirust layer (49) is arranged on the inner wall surface of the first heat dissipation hole (44), the antirust layer (49) covers a heat dissipation step surface (50) on the first heat dissipation hole (44), a heat dissipation protruding portion (48) is arranged on one side, away from the heat dissipation step surface (50), of the antirust layer (49), and the heat dissipation protruding portion (48) is of an annular structure.

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