CN214055089U

CN214055089U - Pistol-type electric wrench for disassembly and assembly of rear axle flange lock nut of heavy truck

Info

Publication number: CN214055089U
Application number: CN202023291201.1U
Authority: CN
Inventors: 代风; 朱若岭; 武超
Original assignee: Henan Vocational and Technical College of Communications
Current assignee: Henan Vocational and Technical College of Communications
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-27
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a pistol formula electric spanner for dismouting of heavy truck rear axle flange lock nut belongs to electric spanner instrument technical field, is the pistol form, including casing, motor, reduction gear, first torque multiplier and second torque multiplier, the inside motor that is provided with of casing, be provided with the motor shaft on the motor, the motor shaft is the ratch at the output, and with reduction gear meshing, reduction gear pinion shaft and first torque multiplier are connected, first torque multiplier is connected with the second torque multiplier, first torque multiplier outward appearance is the cylinder, second torque multiplier outward appearance is the vertebral column body, the diameter of first torque multiplier is greater than the diameter of second torque multiplier. The utility model discloses inside is provided with motor and two torsion multipliers that establish ties together, comes the rotational speed reduction through the torsion multiplier to improve torsion simultaneously, plays the effect of province, can be used to flange lock nut's dismouting.

Description

Pistol type electric wrench for disassembling and assembling flange locking nut of heavy truck rear axle

Technical Field

The utility model belongs to the technical field of heavily block repair tools technique and specifically relates to a pistol formula electric spanner that is used for heavily block rear axle flange lock nut dismouting.

Background

Due to the reasons of working environment and conditions of many heavy trucks or due maintenance ticket, the rear drive axle needs to be maintained to ensure the heavy trucks to work healthily and continuously.

The rear drive axle of the heavy truck fastens parts by using a plurality of flange locking nuts, and the flange locking nuts are formed by combining the washers and the nuts into a whole, so that the number of single fasteners is reduced, the assembly and management are facilitated, more importantly, the flange locking nuts have a locking function so that the flange locking nuts cannot loosen in the working process, and the mechanical performance of the rear drive axle of the heavy truck is ensured.

The tightening or loosening torque of the flange lock nuts is very large, taking the output flange nut specification S of China heavy-duty truck AC26 axle as 64.5mm as an example, the flange lock nuts are tightened with the high torque of 900 plus 1100 N.m, so that the nuts are difficult to be disassembled and tightened even if a force lever is used for maintenance, and particularly, the nuts are difficult to be disassembled on the whole vehicle site because of the small space.

Although the AC26 axle is equipped with a special labor-saving wrench for the nut, which is composed of a torque booster, a bracket, a sleeve, a slide rod and a slide head, the wrench is a manual tool, a maintenance worker still needs to exert great force to unscrew or tighten the nut, and the vehicle is more laborious and inefficient to disassemble on the site of the whole vehicle.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at prior art not enough, provide a pistol formula electric spanner that is used for heavy truck rear axle flange lock nut dismouting, the outward appearance is pistol form, and inside is provided with motor and two torsion multipliers that establish ties together, reduces the rotational speed through the torsion multiplier and improves torsion simultaneously, plays the effect of province, can be used to flange lock nut's dismouting.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pistol formula electric spanner for dismouting of heavy truck rear axle flange lock nut is pistol form, including casing, motor, reduction gear, first torque multiplier and second torque multiplier, the inside motor that is provided with of casing, be provided with the motor shaft on the motor, the motor shaft is the ratch at the output, with reduction gear meshing, the gear shaft of reduction gear is connected with first torque multiplier, first torque multiplier is connected with the second torque multiplier, first torque multiplier outward appearance is the cylinder, the second torque multiplier outward appearance is the vertebral column body, the diameter of first torque multiplier is greater than the diameter of second torque multiplier.

Furthermore, first torsion multiplier and second torsion multiplier all include shell, inner ring gear, planet wheel support and sun gear, the inner circle sets up in the shell, the sun gear sets up in the centre, the planet wheel sets up between sun gear and inner ring gear, is the circumference equipartition, the planet wheel sets up on the planet wheel support, the planet wheel support is connected with the output shaft of torsion multiplier.

Furthermore, the number of the planet wheels of the first torque multiplier is 4, and the number of the planet wheels of the second torque multiplier is 3.

Furthermore, the conical end of the housing of the second torque multiplier is provided with an output shaft of the second torque multiplier.

Furthermore, the output shaft of the second torque multiplier is a square column body and can be directly connected with a socket wrench for use.

Further, the head of the conical shell of second torque multiplier is provided with the detachable reaction arm of force, lets the utility model discloses an electric spanner is safe and reliable more in the use.

Furthermore, a trigger-shaped key is arranged on the shell, a power switch is arranged in the shell, the key is connected with the power switch, a reversing shifting piece is arranged above the key and is connected with the power switch.

Further, the power switch is a speed-adjustable power switch.

Further, the power switch is respectively connected with the power line and the motor.

The utility model discloses a pistol formula electric spanner for heavily block rear axle flange lock nut dismouting, need when using and use together with flange lock nut complex sleeve, when using, with the muffjoint on the nut, press the button on the spanner, starter motor can carry out the dismouting to flange lock nut.

The heavy truck is very flexible and convenient to use in a narrow space for on-site disassembly of the whole heavy truck, the disassembly and assembly time is short, the embarrassment that maintenance personnel can disassemble the heavy truck only by great strength is avoided, the strength of the maintenance personnel is saved, and the working efficiency of the maintenance personnel is improved.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a pistol formula electric spanner for dismouting of heavy truck rear axle flange lock nut, the inside is provided with two torsion multipliers, utilizes the radius ratio increase moment of interior external gear in the planetary gear train to reduce mechanism length; a large couple can be obtained by controlling the radius ratio of the gear, and the flange locking nut can be disassembled and assembled by using a small motor.

2. The utility model discloses a pistol formula electric spanner for heavy truck rear axle flange lock nut dismouting to the motor is as power, and output torque is bigger, and is high efficiency, can use manpower sparingly and realize dismantling and assembling through the switching-over plectrum.

3. The utility model discloses a pistol formula electric spanner for dismouting of heavy truck rear axle flange lock nut through installing the detachable reaction arm of force additional, when the flange lock nut to dismantling great specification, can effectually prevent that spanner self is rotatory, convenient to use, easily control.

Drawings

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

Fig. 2 is a schematic structural diagram of a first torque multiplier according to the present invention.

Fig. 3 is a schematic structural diagram of a second torque multiplier according to the present invention.

In the figure, 1-shell, 2-motor, 3-motor shaft, 4-reduction gear, 5-first torque multiplier, 6-second torque multiplier, 7-output shaft, 8-reaction force arm, 9-key, 10-power switch, 11-reversing plectrum and 12-power line. 21-housing, 22-inner ring gear, 23-planet wheel, 24-sun wheel.

Detailed Description

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

Example (b):

as shown in fig. 1, 2 and 3, the pistol-type electric wrench for disassembling and assembling the locking nut of the rear axle flange of the heavy truck is pistol-shaped and comprises a housing, a motor, a reduction gear, a first torque multiplier and a second torque multiplier, wherein the motor is arranged in the housing, a motor shaft is arranged on the motor, the motor shaft is a rack bar at an output end and is meshed with the reduction gear, a gear shaft of the reduction gear is connected with the first torque multiplier, the first torque multiplier is connected with the second torque multiplier, the first torque multiplier is cylindrical in appearance, the second torque multiplier is conical in appearance, and the diameter of the first torque multiplier is larger than that of the second torque multiplier.

The first torsion multiplier and the second torsion multiplier respectively comprise a shell, an inner ring gear, a planet wheel bracket and a sun wheel, the inner ring is arranged in the shell, the sun wheel is arranged in the middle, the planet wheels are arranged between the sun wheel and the inner ring gear and are evenly distributed on the circumference, the planet wheel is arranged on a planet wheel bracket, the planet wheel bracket is connected with an output shaft of the torsion multiplier, the number of planet wheels of the first torque multiplier is 4, the number of planet wheels of the second torque multiplier is 3, the conical end of the shell of the second torque multiplier is provided with an output shaft of the second torque multiplier, the output shaft of the second torque multiplier is a square column, can directly be connected with box spanner and use, the head of the conical shell of second torque multiplier is provided with the detachable reaction arm of force, lets the utility model discloses an electric spanner is safe and reliable more in the use.

The shell is provided with a trigger-shaped key, the shell is internally provided with a speed-adjustable power switch, the key is connected with the power switch, a reversing shifting piece is arranged above the key and connected with the power switch, and the power switch is respectively connected with a power line and a motor.

The torque multiplier is formed by combining a circumference or a planetary gear in different combination stages to drive the gear to rotate and output force, the torque magnification factor of each stage gear is 5, and the conventional ratio is as follows: 1: 4.2,1: 16,1: 21.5,1: 25, etc. In a planetary gear system, torque is input and output via a sun gear. Three or four planetary gears are combined with the central gear to drive the rotation. A circumferential gear within the multiplier housing engages the surrounding inner planetary-type gear but rotates in the opposite direction relative to the inner planetary gear. The reaction arm can prevent the shell integrated with the circumferential gear from rotating, so that the planetary gear rotates around the central gear to drive the driving square head to rotate, and torque is output.

Similarly, the specification S of an output flange nut in a Chinese heavy gas AC26 axle is 64.5mm, taking the tightening torque as 1100 N.m and the disassembly torque as 1400 N.m as an example, the utility model discloses a pistol type electric wrench for disassembling and assembling a flange lock nut of a heavy truck rear axle, the ratio of a motor shaft to a reduction gear is 1:5, the transmission efficiency is 0.9, the ratio of a first torque multiplier is 1:16, the transmission efficiency is 0.9, the ratio of a second torque multiplier is 1:5, the transmission efficiency is 0.9, the power of the motor is 500W, the torque is 6 N.m, the rotating speed is 1440 revolutions, the rotating speed of the output shaft of the second torque multiplier is 3.6r/min, the torque is more than 1700 N.m, which is larger than the disassembly torque of the flange nut, therefore, the utility model is used for the pistol type electric wrench for disassembling and assembling the flange locking nut of the heavy truck rear axle, the flange nut with the specification S of 64.5mm on the AC26 axle can be easily disassembled and assembled.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A pistol formula electric spanner for heavily block rear axle flange lock nut dismouting is pistol form, its characterized in that: including casing (1), motor (2), reduction gear (4), first torque multiplier (5) and second torque multiplier (6), casing (1) inside is provided with motor (2), be provided with motor shaft (3) on motor (2), motor shaft (3) are the ratch at the output, mesh with reduction gear (4), and the gear shaft and the first torque multiplier (5) of reduction gear (4) are connected, first torque multiplier (5) are connected with second torque multiplier (6), first torque multiplier (5) outward appearance is the cylinder, second torque multiplier (6) outward appearance is the vertebral column body, the diameter of first torque multiplier (5) is greater than the diameter of second torque multiplier (6).

2. The pistol-type electric wrench for dismounting and mounting the rear axle flange lock nut of the heavy truck according to claim 1, characterized in that: first torsion multiplier (5) and second torsion multiplier (6) all include shell (21), inner ring gear (22), planet wheel (23), planet wheel support and sun gear (24), inner ring gear (22) set up in shell (21), sun gear (24) set up in the middle of, planet wheel (23) set up between sun gear (24) and inner ring gear (22), are the circumference equipartition, planet wheel (23) set up on the planet wheel support, the planet wheel support is connected with the output shaft of torsion multiplier.

3. The pistol-type electric wrench for dismounting and mounting the rear axle flange lock nut of the heavy truck according to claim 2, characterized in that: the number of planet wheels (23) of the first torque multiplier (5) is 4, and the number of planet wheels (23) of the second torque multiplier (6) is 3.

4. The pistol-type electric wrench for dismounting and mounting the rear axle flange lock nut of the heavy truck according to claim 2, characterized in that: and the conical end of the shell of the second torque multiplier (6) is provided with an output shaft (7) of the second torque multiplier.

5. The pistol-type power wrench for removal and installation of a rear axle flange lock nut of a heavy truck according to claim 4, wherein: an output shaft (7) of the second torsion multiplier (6) is a square column.

6. The pistol-type electric wrench for dismounting and mounting the rear axle flange lock nut of the heavy truck according to claim 1, characterized in that: the head of the conical shell of the second torque multiplier (6) is provided with a detachable reaction force arm (8).

7. The pistol-type electric wrench for dismounting and mounting the rear axle flange lock nut of the heavy truck according to claim 1, characterized in that: the improved multifunctional electric water heater is characterized in that a trigger-shaped key (9) is arranged on the shell (1), a power switch (10) is arranged in the shell, the key (9) is connected with the power switch (10), a reversing shifting piece (11) is arranged above the key (9), and the reversing shifting piece (11) is connected with the power switch (10).

8. The pistol-type power wrench for removal and installation of a rear axle flange lock nut of a heavy truck according to claim 7, wherein: the power switch (10) is respectively connected with the power line (12) and the motor (2).