CN218440582U

CN218440582U - Perforation type speed reducing mechanism for transmission of straight thread rolling machine

Info

Publication number: CN218440582U
Application number: CN202222982887.1U
Authority: CN
Inventors: 雷乙文; 程明乐
Original assignee: Anhui Yuanjiequan Construction Engineering Co ltd
Current assignee: Anhui Yuanjiequan Construction Engineering Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-02-03
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a driven perforation formula reduction gears of straight thread rolling machine relates to mechanical technical field, including box and decelerator, decelerator installs in the inside of box, and the top of box is equipped with voltage stabilizing component and four oil feeding subassemblies respectively, and voltage stabilizing component includes backup pad, regulation and control subassembly and two dust removal subassemblies, and the backup pad is fixed to be set up in the front of box, and two mounting holes have been seted up on the surface of backup pad, the beneficial effects of the utility model are that: two baroceptor measure the inside atmospheric pressure of box and the outside atmospheric pressure of box respectively, two baroceptor all transmit the atmospheric pressure numerical value of measuring for the singlechip, the singlechip starts two motorised valves, make the inside of box communicate through two breather pipes and external world, the air that expands with heat is discharged through two breather pipes, thereby reduce the inside atmospheric pressure of box, prevent the internal and external pressure imbalance of box, and then avoid lubricating oil along other gap seepage such as branch case face or axle extension sealing member.

Description

Perforation type speed reducing mechanism for transmission of straight thread rolling machine

Technical Field

The utility model relates to a reduction gears, in particular to driven perforation formula reduction gears of straight thread rolling machine belongs to mechanical technical field.

Background

The steel bar screw connection is that the ends of two steel bars to be connected are respectively processed with connecting screw threads with a certain size and precision, then the two steel bars to be connected are respectively screwed into the connecting sleeve with corresponding internal screw threads at two ends or the screw thread holes on the connecting assembly, and the matched screw thread pairs are locked, so that the two steel bars are connected together. The thread rolling machine for reinforcing steel bar thread can directly roll thread on the surface of the end of the reinforcing steel bar which is not processed, and has the advantages of simple processing and equal strength of the joint with the reinforcing steel bar. The thread rolling machine for reinforcing steel bar threads consists of a frame, a clamping mechanism, a feeding planker, a speed reducer, a thread rolling head, a cooling system and an electrical system.

The special perforated speed reducer for the straight thread rolling machine comprises a motor connecting disc, a pin gear shell, a pin and a pin sleeve, a swinging sheet, an input shaft bearing, an eccentric bearing, an output shaft, a first machine base bearing, a second machine base bearing, a speed reducer machine base and a machine base end cover which are sequentially installed from left to right, wherein the motor connecting disc and the pin gear shell are designed into a whole; the utility model discloses can effectively solve the problem that prior art exists, be the technological innovation to prior art one-time expansibility, therefore have fine popularization and use value "find through further search, its application number is" CN202011028384.X is used for the driven perforation type speed reducer of straight thread rolling machine ", it" including the installation box, installation box chamber, mounting panel, a supporting cylinder, decelerator, guard box, guard chamber, electric cylinder, braking plate, brake wheel, liftable mount pad structure, oiling bucket structure, fin and cooling fan, the installation box inside seted up the installation box chamber; the mounting plates are respectively welded in the middle parts of the front end and the rear end of the mounting box body; the supporting cylinder is welded at the front part of the right end of the mounting box body; the speed reducer is arranged in the mounting box body; the protective box bolt install the rear side at the installation box right-hand member, and seted up the guard chamber in the protective box. The beneficial effects of the invention are as follows: through the setting of oiling bucket structure, be convenient for store lubricating oil in the storage cylinder, carry out the work of oiling to decelerator through going out the oil head simultaneously, and then increased its functionality ", but above-mentioned two kinds of perforation formula reduction gears still have following defect:

when the existing speed reducing mechanism works, the temperature in the box body can rise, gas expands, and the pressure is increased, so that lubricating oil leaks along other gaps such as a box separating surface or a shaft extension sealing piece.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a driven perforation formula reduction gears of straight thread rolling machine to solve the current reduction gears who provides among the above-mentioned background art and can rise at the during operation, the temperature in the box, gas expansion, pressure increase causes lubricating oil along the branch case face or the problem of other gap seepage such as shaft extension sealing member.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a driven perforation formula reduction gears of straight thread rolling machine, includes box and decelerator, decelerator installs the inside at the box, the top of box is equipped with steady voltage subassembly and four oil feeding subassemblies respectively, steady voltage subassembly includes backup pad, regulation and control subassembly and two dust removal subassemblies, the fixed front that sets up at the box of backup pad, two mounting holes have been seted up on the surface of backup pad, two the inner wall of mounting hole is all fixed and is equipped with the breather pipe, two the inside of box is placed in the front of box is all passed to the one end of breather pipe.

Preferably, the regulation and control subassembly includes collection box, two baroceptors and two motorised valves, the fixed top that sets up at the backup pad of collection box, the inside of collection box is fixed and is equipped with the singlechip, one of them baroceptor is fixed to be set up at the positive inner wall of box, another baroceptor is fixed to be set up in the front of box, two the motorised valve is fixed the surface that sets up at two breather pipes respectively, two motorised valves and two baroceptors all with singlechip electric connection.

Preferably, two the dust removal subassembly all includes the switching-over pipe, two the switching-over pipe is fixed respectively and is set up the one end at two breather pipes, two the inner wall of switching-over pipe is all fixed and is equipped with the dust screen, two the surface of switching-over pipe all is equipped with the supporting shoe, two the through-hole has all been seted up on the surface of supporting shoe, two the top of supporting shoe is all fixed and is equipped with driving motor, two driving motor's transmission shaft is all fixed be equipped with the gliding transfer line of through-hole looks, two the surface of two switching-over pipes is passed respectively to the one end of transfer line the top of two dust screens is passed respectively, two the one end of transfer line is all fixed and is equipped with the driving plate, two the top of driving plate is all fixed and is equipped with two brush hair layers, four the equal sliding connection of contact segment of brush hair layer and two dust screens.

Preferably, two the surface of transfer line all is fixed and is equipped with a plurality of flabellum, two fixedly between the switching-over pipe be equipped with communicating pipe, two the inside of switching-over pipe all is linked together with the inside of communicating pipe.

Preferably, four it all includes and adds an oil section of thick bamboo, four it all sets up on the top of box, four to add an oil section of thick bamboo the bottom of adding an oil section of thick bamboo is all passed the inner wall on box top and is placed in the inside of box, four it all fixes being equipped with out the oil nipple, four to add the bottom of an oil section of thick bamboo the equal threaded connection in surface that adds an oil section of thick bamboo has sealed lid.

Preferably, a brake box is fixedly arranged on one side of the box body, electric push rods are fixedly arranged on the front side and the back side of the brake box, brake blocks are fixedly arranged at the telescopic ends of the two electric push rods, the two brake blocks are arranged in a V-21274type, a brake wheel is connected between the two brake blocks in a sliding manner, the brake wheel is fixedly connected with the contact part of the output end of the speed reducer, and the inner wall of one side of the brake box is rotatably connected with the output end of the speed reducer through a sealed bearing.

Preferably, the fixed flush mounting plate that is equipped with in top of backup pad, flush mounting plate's surface is equipped with two driving motor switches, electric putter switch and single chip microcomputer switch, one of them driving motor passes through one of them driving motor switch and external power supply electric connection, another driving motor passes through another driving motor switch and external power supply electric connection, two electric putter and single chip microcomputer pass through electric putter switch and single chip microcomputer switch and external power supply electric connection respectively.

Compared with the prior art, the utility model provides a pair of driven perforation formula reduction gears of straight thread rolling machine has following beneficial effect:

1. the two air pressure sensors respectively measure the air pressure inside the box body and the air pressure outside the box body, the two air pressure sensors transmit measured air pressure values to the single chip microcomputer, the single chip microcomputer starts the two electric valves to enable the inside of the box body to be communicated with the outside through the two vent pipes, and the hot expanding air is exhausted through the two vent pipes, so that the air pressure inside the box body is reduced, the internal and external pressure imbalance of the box body is prevented, and further, lubricating oil is prevented from leaking along other gaps such as box separating surfaces or shaft extension sealing elements;

2. the dust-proof net can prevent dust from entering the interior of the box body when the vent pipe is communicated with the interior of the box body and the outside, so that lubricating oil on the surface of a gear of the speed reducing device is prevented from being contaminated by the dust, the driving motor drives the transmission rod to rotate, the transmission rod drives the transmission plate to rotate, and the transmission plate drives the two bristle layers to rotate, so that the dust on the surface of the dust-proof net is swept down conveniently;

3. the driving motor drives the transmission rod to rotate, the transmission rod drives the fan blades to rotate, so that air flow is generated, the air flow enters from the reversing pipe far away from the transmission rod and flows out from the reversing pipe corresponding to the transmission rod through the communicating pipe, and then the air flow blows the cleaned dustproof net, and the cleaning efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the cross-sectional structure of the present invention;

figure 3 is the section structure schematic diagram of the oil adding component of the utility model

FIG. 4 is a schematic sectional view of the dust-removing assembly of the present invention;

fig. 5 is an enlarged schematic view of a portion a of fig. 4 according to the present invention.

In the figure: 1. a box body; 2. a reduction gear; 3. a voltage stabilizing assembly; 31. a support plate; 32. mounting holes; 33. a breather pipe; 4. an oil adding component; 41. an oil adding cylinder; 42. an oil outlet nozzle; 43. a sealing cover; 5. a regulatory component; 51. a current collection box; 52. an air pressure sensor; 53. an electrically operated valve; 6. a dust removal assembly; 61. a reversing tube; 62. a dust screen; 63. a drive motor; 64. a transmission rod; 65. a drive plate; 66. a bristle layer; 67. a support block; 7. a fan blade; 8. a communicating pipe; 9. a brake box; 10. an electric push rod; 11. a brake pad; 12. a brake wheel; 13. and a switch panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-5, the utility model provides a perforated speed reducing mechanism driven by a straight thread rolling machine, which comprises a box body 1 and a speed reducing device 2, wherein the speed reducing device 2 is arranged inside the box body 1, and the top end of the box body 1 is respectively provided with a pressure stabilizing assembly 3 and four oil adding assemblies 4;

a brake box 9 is fixedly arranged on one side of the box body 1, electric push rods 10 are fixedly arranged on the front side and the back side of the brake box 9, brake blocks 11 are fixedly arranged at the telescopic ends of the two electric push rods 10, the two brake blocks 11 are arranged in a V-21274type, brake wheels 12 are connected between the two brake blocks 11 in a sliding manner, the brake wheels 12 are fixedly connected with the contact part of the output end of the speed reducing device 2, the inner wall of one side of the brake box 9 is rotatably connected with the output end of the speed reducing device 2 through a sealing bearing, the two electric push rods 10 are started through electric push rod switches, the telescopic ends of the two electric push rods 10 extend, the two electric push rods 10 push the two brake blocks 11 to move, the two brake blocks 11 are finally attached to the brake wheels 12 after moving, and the two brake blocks 11 have great sliding friction with the brake wheels 12, so that the braking effect of the speed reducing device 2 is improved;

the surface of the switch panel 13 is provided with an electric push rod switch, and the two electric push rods 10 are electrically connected with an external power supply through the electric push rod switches;

referring to fig. 1-5, the utility model provides a perforation type speed reducing mechanism driven by a straight thread rolling machine, which further comprises a pressure stabilizing assembly 3, wherein the pressure stabilizing assembly 3 comprises a support plate 31, a regulating assembly 5 and two dust removing assemblies 6, the support plate 31 is fixedly arranged on the front surface of the box body 1, two mounting holes 32 are arranged on the surface of the support plate 31, vent pipes 33 are fixedly arranged on the inner walls of the two mounting holes 32, and one ends of the two vent pipes 33 penetrate through the front surface of the box body 1 and are arranged in the box body 1;

the top end of the supporting plate 31 is fixedly provided with a switch panel 13;

specifically, as shown in fig. 1, fig. 2, fig. 4, and fig. 5, the inside of the box body 1 is firstly communicated with the outside air through two breather pipes 33, when the temperature of the inside air of the box body 1 rises due to the reduction gear 2, the air expands, the pressure increases, and the thermal expansion air is exhausted through the two breather pipes 33, so that the air pressure inside the box body 1 is reduced, the internal and external pressure imbalance of the box body 1 is prevented, and further, the lubricating oil is prevented from leaking along other gaps such as a box separating surface or a shaft extension sealing member.

Example 2:

the regulating and controlling assembly 5 comprises a collecting box 51, two air pressure sensors 52 and two electric valves 53, the collecting box 51 is fixedly arranged at the top end of the supporting plate 31, a single chip microcomputer is fixedly arranged inside the collecting box 51, one air pressure sensor 52 is fixedly arranged on the inner wall of the front surface of the box body 1, the other air pressure sensor 52 is fixedly arranged on the front surface of the box body 1, the two electric valves 53 are respectively and fixedly arranged on the surfaces of the two vent pipes 33, and the two electric valves 53 and the two air pressure sensors 52 are electrically connected with the single chip microcomputer;

the surface of the switch panel 13 is provided with a singlechip switch, and the singlechip is electrically connected with an external power supply through the singlechip switch;

specifically, as shown in fig. 1 and 2, firstly, the two air pressure sensors 52 measure the air pressure inside the box body 1 and the air pressure outside the box body 1 respectively, the two air pressure sensors 52 transmit the measured air pressure values to the single chip microcomputer, the two values are called an in-box air pressure value and an out-box air pressure value respectively, a program is preset in the single chip microcomputer, the out-box air pressure value and the in-box air pressure value can be calculated, when the two values are not equal in size, the single chip microcomputer starts the two electric valves 53 to enable the inside of the box body 1 to be communicated with the outside through the two air pipes 33, when the two values are equal in size, the single chip microcomputer closes the two electric valves 53, and then the regulating and controlling assembly 5 is arranged to conveniently control the communication between the air pipes 33 and the inside of the box body 1 according to the air pressures inside and outside the box body 1, so that the sealing time of the box body 1 is increased, and the sealing is more flexible.

Example 3:

the two dust removal assemblies 6 respectively comprise reversing pipes 61, the two reversing pipes 61 are respectively fixedly arranged at one end of the two vent pipes 33, dust screens 62 are respectively fixedly arranged on the inner walls of the two reversing pipes 61, supporting blocks 67 are respectively arranged on the surfaces of the two reversing pipes 61, through holes are respectively formed in the surfaces of the two supporting blocks 67, driving motors 63 are respectively fixedly arranged at the top ends of the two supporting blocks 67, driving shafts of the two driving motors 63 are respectively fixedly provided with driving rods 64 sliding with the through holes, one ends of the two driving rods 64 respectively penetrate through the surfaces of the two reversing pipes 61, one ends of the two driving rods 64 respectively penetrate through the top ends of the two dust screens 62, one ends of the two driving rods 64 are respectively fixedly provided with driving plates 65, the top ends of the two driving plates 65 are respectively fixedly provided with two bristle layers 66, and the four bristle layers 66 are respectively in sliding connection with the contact parts of the two dust screens 62;

the surfaces of the two transmission rods 64 are fixedly provided with the plurality of fan blades 7, the communicating pipe 8 is fixedly arranged between the two reversing pipes 61, the interiors of the two reversing pipes 61 are communicated with the interior of the communicating pipe 8, when the two gas electric valves 53 are both in a closed state, the gas can enter from one reversing pipe 61 and then flow out from the other reversing pipe 61 through the communicating pipe 8, and the rotating fan blades 7 are matched to blow the cleaned dust screen 62, so that the cleaning efficiency is improved;

the surface of the switch panel 13 is provided with two driving motor switches, wherein one driving motor 63 is electrically connected with an external power supply through one driving motor switch, and the other driving motor 63 is electrically connected with the external power supply through the other driving motor switch;

specifically, as shown in fig. 1, 2, 4, and 5, firstly, the dust-proof net 62 is arranged to prevent dust from entering the inside of the box 1 when the air pipe 33 communicates the inside of the box 1 with the outside, so as to prevent the lubricant on the surface of the gear of the reduction gear 2 from being contaminated by dust, when the dust-proof net 62 needs to be cleaned, the driving motor 63 is started by the driving motor switch, the driving motor 63 drives the driving rod 64 to rotate, the driving rod 64 drives the driving plate 65 to rotate, the driving plate 65 drives the two bristle layers 66 to rotate, so as to sweep off the dust on the surface of the dust-proof net 62, it is very convenient, further, both the two electric valves 53 are ensured to be in a closed state, then one of the driving motors 63 is started, the driving motor 63 drives the driving rod 64 to rotate, the driving rod 64 drives the fan blades 7 to rotate, so as to generate an air flow, the air flow enters from the reversing pipe 61 far away from the driving rod 64 and flows out from the reversing pipe 61 corresponding to the driving pipe 64 through the communicating pipe 8, so as to blow the cleaned dust-proof net 62, so as to improve the cleaning efficiency, and then the dust-proof net 62 can be cleaned is repeatedly blown by the water after waiting for cleaning operation is completed, and the dust-proof net 62 is started.

Example 4:

the four oil adding assemblies 4 comprise oil adding cylinders 41, the four oil adding cylinders 41 are fixedly arranged at the top end of the box body 1, the bottom ends of the four oil adding cylinders 41 penetrate through the inner wall of the top end of the box body 1 and are arranged inside the box body 1, oil outlet nozzles 42 are fixedly arranged at the bottom ends of the four oil adding cylinders 41, and sealing covers 43 are in threaded connection with the surfaces of the four oil adding cylinders 41;

specifically, as shown in fig. 1 and 3, first, the seal cap 43 is unscrewed, the seal cap 43 is screwed after the lubricating oil is added, and the lubricating oil slides into the surface of the gear of the reduction gear unit 2 through the oil outlet nozzle 42 to be aligned and lubrication reduction is performed.

The working principle is as follows: when in specific use, the utility model relates to a driven perforation formula reduction gears of straight thread rolling machine, at first two baroceptor 52 measure the atmospheric pressure of box 1 inside and the atmospheric pressure of box 1 outside respectively, two baroceptor 52 all transmit the atmospheric pressure numerical value of measurement to the singlechip, these two numerical values are called incasement atmospheric pressure value and incasement atmospheric pressure value respectively, the inside of singlechip has preset the procedure, can calculate the case atmospheric pressure value and the incasement atmospheric pressure value, when the size of two values is unequal, the singlechip will start two motorised valves 53, make the inside of box 1 communicate with the external world through two breather pipes 33, when the size of two values is equal, the singlechip will close two motorised valves 53, therefore, can control the intercommunication of breather pipe 33 and box 1 inside through the regulation and control subassembly 5 that sets up, the sealed time of box 1 has been increased, it is more nimble, when the temperature of the gas in the box body 1 rises due to the speed reducer 2, the gas expands, the pressure is increased, and then the gas pressure value in the box body is larger than the gas pressure value outside the box body, the singlechip starts the two electric valves 53 to make the inside of the box body 1 communicated with the outside through the two air pipes 33, and the heat expansion air is discharged through the two air pipes 33, so that the gas pressure in the box body 1 is reduced, the internal and external pressure imbalance of the box body 1 is prevented, and further the lubricating oil is prevented from leaking along other gaps such as box separating surfaces or shaft extension sealing parts, the dust-proof net 62 is arranged to prevent dust from entering the inside of the box body 1 when the air pipes 33 are communicated with the inside and the outside of the box body 1, so that the lubricating oil on the surface of the gear of the speed reducer 2 is prevented from being contaminated by dust, when the dust-proof net 62 needs to be cleaned, the driving motor 63 is started through the driving motor switch, the driving motor 63 drives the driving rod 64 to rotate, and the driving rod 64 drives the driving plate 65 to rotate, the driving plate 65 drives the two bristle layers 66 to rotate, so as to sweep off dust on the surface of the dust screen 62, which is very convenient, and further, when one dust screen 62 needs to be cleaned, it is ensured that both the two electric valves 53 are in a closed state, then one driving motor 63 is started, the driving motor 63 drives the driving rod 64 to rotate, the driving rod 64 drives the fan blades 7 to rotate, so as to generate an air flow, the air flow enters from the reversing pipe 61 far away from the driving rod 64 and flows out from the reversing pipe 61 corresponding to the driving rod 64 through the communicating pipe 8, so that the air flow blows the cleaned dust screen 62, the cleaning efficiency is improved, the driving motor 63 is closed after waiting for a period of time, water can be placed at the bottom end of the dust screen 62 for absorbing the blown dust, then the other driving motor 63 is started, and the above operations are repeated, so as to finish the cleaning of the two dust screens 62.

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

Claims

1. The utility model provides a driven perforation formula reduction gears of straight thread rolling machine, includes box (1) and decelerator (2), its characterized in that, decelerator (2) are installed in the inside of box (1), the top of box (1) is equipped with voltage stabilizing component (3) and four oiliness subassemblies (4) respectively, voltage stabilizing component (3) are including backup pad (31), regulation and control subassembly (5) and two dust removal subassemblies (6), backup pad (31) are fixed to be set up in the front of box (1), two mounting holes (32), two have been seted up on the surface of backup pad (31) the inner wall of mounting hole (32) all is fixed to be equipped with breather pipe (33), two the inside of box (1) is placed in the front of box (1) is all passed to the one end of breather pipe (33).

2. A straight thread rolling machine driven through-hole reduction mechanism according to claim 1, wherein: regulation and control subassembly (5) are including collecting box (51), two baroceptor (52) and two motorised valves (53), the fixed top that sets up in backup pad (31) of collecting box (51), the inside fixed singlechip that is equipped with of collecting box (51), one of them baroceptor (52) are fixed to be set up at the positive inner wall of box (1), another baroceptor (52) are fixed to be set up in the front of box (1), two motorised valves (53) are fixed respectively to be set up on the surface of two breather pipes (33), two motorised valves (53) and two baroceptor (52) all with singlechip electric connection.

3. A straight thread rolling machine driven through-hole reduction mechanism according to claim 2, wherein: two dust removal subassembly (6) all include switching-over pipe (61), two switching-over pipe (61) is fixed respectively and is set up the one end in two breather pipes (33), two the inner wall of switching-over pipe (61) is all fixed and is equipped with dust screen (62), two the surface of switching-over pipe (61) all is equipped with supporting shoe (67), two the through-hole has all been seted up on the surface of supporting shoe (67), two the top of supporting shoe (67) is all fixed and is equipped with driving motor (63), two the transmission shaft of driving motor (63) is all fixed and is equipped with through-hole looks gliding transfer line (64), two the surface of two switching-over pipes (61) is passed respectively to the one end of transfer line (64) passes the top of two dust screen (62) respectively, two the one end of transfer line (64) is all fixed and is equipped with driving plate (65), two the top of driving plate (65) is all fixed and is equipped with two brush hair layers (66), four the equal sliding connection of contact site of brush hair layer (66) and two dust screen (62).

4. A straight thread rolling machine driven through-hole reduction mechanism according to claim 3, wherein: the surface of the two transmission rods (64) is fixedly provided with a plurality of fan blades (7), a communicating pipe (8) is fixedly arranged between the two reversing pipes (61), and the insides of the two reversing pipes (61) are communicated with the inside of the communicating pipe (8).

5. A straight thread rolling machine driven through-hole reduction mechanism according to claim 1, wherein: four it all includes and adds an oil section of thick bamboo (41), four add an oil section of thick bamboo (41) and all fix the top that sets up in box (1), four the bottom that adds an oil section of thick bamboo (41) all passes the inner wall on box (1) top and places the inside of box (1) in, four the bottom that adds an oil section of thick bamboo (41) is all fixed and is equipped with out oil nipple (42), four the equal threaded connection in surface that adds an oil section of thick bamboo (41) has sealed lid (43).

6. A straight thread rolling machine driven through-hole reduction mechanism according to claim 3, wherein: a brake box (9) is fixedly arranged on one side of the box body (1), electric push rods (10) are fixedly arranged on the front side and the back side of the brake box (9), brake blocks (11) are fixedly arranged at the telescopic ends of the two electric push rods (10), the two brake blocks (11) are arranged in a V-21274shape, a brake wheel (12) is connected between the two brake blocks (11) in a sliding manner, the brake wheel (12) is fixedly connected with the contact part of the output end of the speed reducing device (2), and the inner wall of one side of the brake box (9) is rotatably connected with the output end of the speed reducing device (2) through a sealing bearing.

7. The through-hole reduction mechanism of a straight-thread rolling machine transmission according to claim 6, characterized in that: the fixed flush mounting plate of switch panel (13) that is equipped with in top of backup pad (31), the surface of flush mounting plate of switch (13) is equipped with two driving motor switches, electric putter switch and single chip microcomputer switch, one of them driving motor (63) are through one of them driving motor switch and external power supply electric connection, another driving motor (63) are through another driving motor switch and external power supply electric connection, two electric putter (10) and single chip microcomputer switch and external power supply electric connection respectively through electric putter switch and single chip microcomputer switch.