CN212071017U

CN212071017U - Adjustable large-torque nut dismounting machine

Info

Publication number: CN212071017U
Application number: CN202020565540.5U
Authority: CN
Inventors: 陆星亚; 代洪
Original assignee: Changzhou College of Information Technology CCIT
Current assignee: Changzhou College of Information Technology CCIT
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-04
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a big moment of torsion type nut dismouting machine with adjustable, including portable dolly, portable dolly includes the front wheel, the rear wheel, preceding bounding wall and back bounding wall, be equipped with the hydraulic jack that drives the layer board and go up and down in portable dolly bottom, power transmission mechanism on the layer board drives the impacter and carries out the dismouting to the screw, the impacter is including the driving shaft that has the external screw thread, rear end cap and impacter shell, pressure regulating nut twists on the driving shaft, initiatively strike body free sleeve on the driving shaft, be equipped with pressure spring between initiatively strikeing body and pressure regulating nut, through pressure spring's the tension that stretches, make the biography power round pin that runs through the driving shaft paste tightly with the semicircular hole on the initiatively strikeing body, the initiative part welding of beak type clutch is on initiatively strikeing the body, be equipped with the driven part of tetragonal body. The utility model has the advantages of simple structure and reasonable design, can adjust the moment of torsion, be applicable to the dismouting of the frequent big moment of torsion nut of dismouting.

Description

Adjustable large-torque nut dismounting machine

Technical Field

The utility model relates to a nut dismouting equipment, specific big moment of torsion type nut dismouting machine with adjustable that says so.

Background

At present, the dismounting and mounting of the large-torque nut are usually carried out by adopting a torque wrench or a lengthened wrench handle, the torque requirement on the dismounting personnel is large, and the lengthened wrench handle still needs a large space. The torque force can not be adjusted due to the limitation of disassembly and assembly on the occasions with large torque or narrow space.

Disclosure of Invention

In order to solve the problem, the utility model provides a big moment of torsion type nut dismouting machine with adjustable moment of torsion.

In order to achieve the purpose, the utility model discloses a realize through following technical scheme:

the utility model relates to an adjustable large-torque nut dismounting machine, including portable dolly, portable dolly includes the front wheel, the rear wheel, preceding bounding wall and back bounding wall, be provided with hydraulic jack in portable dolly bottom, hydraulic jack drives the layer board and goes up and down, be provided with force transmission mechanism on the layer board, force transmission mechanism drives the impacter and carries out the dismouting to the nut, the impacter includes the driving shaft of being connected with force transmission mechanism, the driving shaft leans on slide bearing to support on the rear end cap, the rear end cap passes through the fix with screw on the impacter shell, be provided with the external screw thread on the driving shaft, pressure regulating nut screws on the driving shaft through the screw thread, the initiative impact body free-sleeve is on the driving shaft, and do axial displacement on the driving shaft, be equipped with compression spring between initiative impact body and pressure regulating nut, be provided with semi-circular hole on the initiative impact body, through the tension that stretches out of compression spring, the driving part of the beak type clutch is welded at the front end of the driving impact body, the outside of the driven impact body is supported on the shell of the impactor through a bearing, the inside of the driven impact body is sleeved on the driving shaft through a sliding bearing in an empty mode, the front end of the driven impact body is provided with a square body used for connecting a sleeve tool, and the rear end of the driven impact body is provided with a driven part of the beak type clutch which is embedded with the driving part of the beak type clutch.

The utility model discloses a further improvement lies in: the force transmission mechanism comprises a motor and a speed reducer which can rotate positively and reversely, the lower end of the motor is fixed on a motor base on a supporting plate, the rear end of the motor is fixed on a rear enclosing plate through a jacking block, the speed reducer is fixed on a front enclosing plate through an adjusting screw, and a driving shaft of the impactor is in key connection with an output shaft of the speed reducer.

The utility model discloses a further improvement lies in: the speed reducer comprises a shell, an output shaft, an input shaft, an intermediate shaft and two pairs of normally meshed gear sets, wherein the two pairs of normally meshed gear sets are a first gear and a second gear which are meshed with each other, a third gear and a fourth gear which are meshed with each other, the input shaft and the first gear are integrally formed, the second gear and the third gear are in key connection with the intermediate shaft, the fourth gear is in key connection with the output shaft, and the output shaft, the input shaft and the intermediate shaft are all supported on the shell through bearings.

The utility model discloses a further improvement lies in: a handle is arranged on the back boarding.

The utility model has the advantages that: when the resistance of the nut exceeds the rotation torque of the driving shaft, the rotation speed of the driven impact body is reduced, and the driving impact body continues to rotate, so that the force transmission pin tends to slide along the semicircular hole of the driving impact body, the driving impact body is forced to move backwards in the axial direction, and the spring is compressed. At the moment, the clutch is disengaged due to the backward movement of the active impact body, then the tensile force of the spring is increased on the active impact body, the clutch is re-engaged, a part of energy is stored between larger tooth gaps, a primary impact torque is generated, and the impact is circulated until the nut is loosened or screwed. When the impact torque can not meet the dismounting requirement, the pressure regulating nut can be twisted forwards to increase the elasticity of the spring, and the impact torque is increased immediately.

The utility model has the advantages of simple structure and reasonable design, can adjust the moment of torsion, be applicable to the dismouting of the frequent big moment of torsion nut of dismouting.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic of the retarder.

FIG. 3 is a schematic view of an impactor.

Fig. 4 is a motor control circuit diagram.

Wherein: 1-impactor, 11-driving shaft, 12-rear end cover, 13-force transmission pin, 14-impactor shell, 15-cube, 16-driven impact body, 17-bird's beak type clutch, 18-driving impact body, 19-compression spring, 110-pressure regulating nut, 2-speed reducer, 3-motor, 4-top pressing block, 5-handle, 6-motor base, 7-supporting plate and 8-hydraulic jack.

Detailed Description

In order to deepen the understanding of the present invention, the present invention is further explained with reference to the drawings and the embodiments, which are only used to explain the present invention and are not limited to the protection scope of the present invention.

As shown in fig. 1-4, the utility model relates to an adjustable large torque nut dismounting machine, which comprises a movable trolley, the movable trolley comprises a front wheel, a rear wheel, a front coaming and a rear coaming, a handle 5 is arranged on the rear coaming, a hydraulic jack 8 is arranged at the bottom of the movable trolley, the hydraulic jack 8 drives a splint 7 to go up and down, a force transmission mechanism is arranged on the splint 7, the force transmission mechanism drives an impactor 1 to dismount a nut, the impactor 1 comprises a driving shaft 11 connected with the force transmission mechanism, the driving shaft 11 is supported on a rear end cover 12 by a sliding bearing, the rear end cover 12 is fixed on an impactor shell 14 by a screw, an external thread is arranged on the driving shaft 11, a pressure regulating nut 110 is screwed on the driving shaft 11 by a thread, an active impact body 18 is sleeved on the driving shaft 11 in a hollow way and does axial movement on the driving shaft 11, a compression spring 19 is arranged between the active impact, a semicircular hole is formed in a driving impact body 18, a force transmission pin 13 penetrating through a driving shaft 11 is tightly attached to the semicircular hole by the extension force of a compression spring 19, a driving part of a beak-shaped clutch 17 is welded to the front end of the driving impact body 18, the outside of a driven impact body 16 is supported on an impactor housing 14 through a bearing, the inside of the driven impact body 16 is freely sleeved on the driving shaft 11 through a sliding bearing, a square body 15 for connecting a socket tool is arranged at the front end of the driven impact body 16, and a driven part of the beak-shaped clutch 17 which is embedded with the driving part of the beak-shaped clutch 17 is arranged at the rear end of the driven impact body 16.

The force transmission mechanism comprises a motor 3 and a speed reducer 2 which can rotate positively and negatively, wherein the motor is connected with a 220V alternating current power supply, a power switch QF is switched on, and a switch button SB is pressed₂，KM₁The coil is energized, at this time, KM₁Auxiliary normally open contact closing, to SB₂Self-locking, KM₁Auxiliary normally closed contact is opened, to KM₂Interlocking, KM₁The main normally open contact is closed, and the motor rotates forwards. Press SB₁Stop button, KM₁And when the coil loses power, the motor stops rotating. Push switch button SB₃，KM₂The coil is energized. At this time, KM₂Auxiliary normally open contact closing, to SB₃Self-locking, KM₂Auxiliary normally closed contact is opened, to KM₁Interlocking, KM₂The main normally open contact is closed, and the motor rotates reversely. Press SB₁Stop button, KM₂And when the coil loses power, the motor stops rotating. The lower end of the motor 3 is fixed on a motor base 6 on the supporting plate 7, the rear end of the motor 3 is fixed on the back coaming through a top pressing block 4, the speed reducer 2 is fixed on the front coaming through an adjusting screw, and a driving shaft 11 of the impactor 1 is in key connection with an output shaft of the speed reducer 2. The speed reducer 2 comprises a shell, an output shaft, an input shaft, an intermediate shaft and two pairs of normally meshed gear sets, the two pairs of normally meshed gear sets are a first gear and a second gear which are meshed with each other, a third gear and a fourth gear which are meshed with each other, the input shaft and the first gear are integrally formed, the second gear and the third gear are in key connection with the intermediate shaft, the fourth gear is in key connection with the output shaft, and the output shaft, the input shaft and the intermediate shaft are all supported on the shell through bearings.

The driving shaft 11 drives the driving impact body 18 to rotate through the force transmission pin 13, the driving part of the beak-shaped clutch 17 at the front end of the driving impact body is embedded with the driven part of the beak-shaped coupler 17 at the rear end of the driven impact body to form a complete beak-shaped coupler 17, when the nut is disassembled and assembled, the square body is connected with the nut sleeve, then the nut is sleeved, the motor is electrified to rotate to drive the input shaft of the speed reducer 2, and after the speed and the torque of the speed reducer 2 are reduced and increased, the power is transmitted to the driving shaft 11 of the impact device 1 through the output shaft of the speed reducer 2; the driving shaft 11 of the impactor 1 transmits torque to the driving impact body 18 through the force transmission pin 13 to drive the beak-shaped clutch 17 to rotate, the beak-shaped clutch 17 drives the square body 15 and the nut to rotate, and the nut can be disassembled and assembled through forward and reverse rotation of the motor.

Claims

1. Big moment of torsion type nut dismouting machine with adjustable, including portable dolly, portable dolly includes front wheel, rear wheel, preceding bounding wall and back panel, its characterized in that: movable trolley bottom is provided with hydraulic jack (8), hydraulic jack (8) drive layer board (7) and go up and down be provided with drive mechanism on layer board (7), drive mechanism drives impacter (1) and carries out the dismouting to the screw, impacter (1) is including driving shaft (11) of being connected with drive mechanism, driving shaft (11) lean on slide bearing to support on rear end cap (12), rear end cap (12) pass through the fix with screw on impacter shell (14) be provided with the external screw thread on driving shaft (11), pressure regulating nut (110) are twisted through the screw thread on driving shaft (11), initiatively strike body (18) empty cover in on driving shaft (11), and be axial displacement on driving shaft (11) initiatively strike body (18) with pressure regulating nut (110) between be equipped with compression spring (19), the driving impact body (18) is provided with a semicircular hole, a force transmission pin (13) penetrating through the driving shaft (11) is tightly attached to the semicircular hole through the stretching force of the compression spring (19), the driving part of the beak-shaped clutch (17) is welded at the front end of the driving impact body (18), the outside of the driven impact body (16) is supported on the shell (14) of the impactor through a bearing, the inside of the driven impact body (16) is sleeved on the driving shaft (11) in a hollow way through a sliding bearing, the front end of the driven impact body (16) is provided with a square body (15) used for connecting a sleeve tool, and the rear end of the driven impact body (16) is provided with a driven part of the beak-shaped clutch (17) which is embedded with the driving part of the beak-shaped clutch (17).

2. The adjustable high-torque nut dismounting machine according to claim 1, characterized in that: the power transmission mechanism comprises a motor (3) and a speed reducer (2) which can rotate positively and reversely, the lower end of the motor (3) is fixed on a motor base (6) on a supporting plate (7), the rear end of the motor (3) is fixed on a rear enclosing plate through a top pressing block (4), the speed reducer (2) is fixed on a front enclosing plate through an adjusting screw, and a driving shaft (11) of the impactor (1) is connected with an output shaft key of the speed reducer (2).

3. The adjustable high-torque nut remover according to claim 2, characterized in that: the speed reducer (2) comprises a shell, an output shaft, an input shaft, a middle shaft and two pairs of normally meshed gear sets, the two pairs of normally meshed gear sets are a first gear and a second gear which are meshed with each other and a third gear and a fourth gear which are meshed with each other, the input shaft and the first gear are integrally formed, the second gear and the third gear are in key connection with the middle shaft, the fourth gear is in key connection with the output shaft, and the output shaft, the input shaft and the middle shaft are all supported on the shell through bearings.

4. The adjustable high-torque nut dismounting machine according to claim 1, characterized in that: a handle (5) is arranged on the back panel.